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eclipse / platform / eclipse.platform.swt / 868d20d9606c2e8b0b0b779262a70660ff624466 / . / bundles / org.eclipse.swt / Eclipse SWT / gtk / org / eclipse / swt / widgets / Control.java
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/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.*;
import org.eclipse.swt.accessibility.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.cairo.*;
import org.eclipse.swt.internal.gtk.*;
/**
* Control is the abstract superclass of all windowed user interface classes.
* <p>
* <dl>
* <dt><b>Styles:</b>
* <dd>BORDER</dd>
* <dd>LEFT_TO_RIGHT, RIGHT_TO_LEFT</dd>
* <dt><b>Events:</b>
* <dd>DragDetect, FocusIn, FocusOut, Help, KeyDown, KeyUp, MenuDetect, MouseDoubleClick, MouseDown, MouseEnter,
* MouseExit, MouseHover, MouseUp, MouseMove, MouseWheel, MouseHorizontalWheel, MouseVerticalWheel, Move,
* Paint, Resize, Traverse</dd>
* </dl>
* </p><p>
* Only one of LEFT_TO_RIGHT or RIGHT_TO_LEFT may be specified.
* </p><p>
* IMPORTANT: This class is intended to be subclassed <em>only</em>
* within the SWT implementation.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/snippets/#control">Control snippets</a>
* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
* @noextend This class is not intended to be subclassed by clients.
*/
public abstract class Control extends Widget implements Drawable {
long /*int*/ fixedHandle;
long /*int*/ redrawWindow, enableWindow, provider;
int drawCount;
Composite parent;
Cursor cursor;
Menu menu;
Image backgroundImage;
Font font;
Region region;
String toolTipText;
Object layoutData;
Accessible accessible;
Control labelRelation;
Control () {
}
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
* <p>
* The style value is either one of the style constants defined in
* class <code>SWT</code> which is applicable to instances of this
* class, or must be built by <em>bitwise OR</em>'ing together
* (that is, using the <code>int</code> "|" operator) two or more
* of those <code>SWT</code> style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
* </p>
*
* @param parent a composite control which will be the parent of the new instance (cannot be null)
* @param style the style of control to construct
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*
* @see SWT#BORDER
* @see SWT#LEFT_TO_RIGHT
* @see SWT#RIGHT_TO_LEFT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Control (Composite parent, int style) {
super (parent, style);
this.parent = parent;
createWidget (0);
}
Font defaultFont () {
return display.getSystemFont ();
}
void deregister () {
super.deregister ();
if (fixedHandle != 0) display.removeWidget (fixedHandle);
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) display.removeWidget (imHandle);
}
void drawBackground (Control control, long /*int*/ window, long /*int*/ region, int x, int y, int width, int height) {
drawBackground(control, window, 0, region, x, y, width, height);
}
void drawBackground (Control control, long /*int*/ window, long /*int*/ cr, long /*int*/ region, int x, int y, int width, int height) {
if (OS.USE_CAIRO) {
long /*int*/ cairo = cr != 0 ? cr : OS.gdk_cairo_create(window);
if (cairo == 0) error (SWT.ERROR_NO_HANDLES);
if (region != 0) {
OS.gdk_cairo_region(cairo, region);
Cairo.cairo_clip(cairo);
}
if (control.backgroundImage != null) {
Point pt = display.map (this, control, 0, 0);
Cairo.cairo_translate (cairo, -pt.x, -pt.y);
x += pt.x;
y += pt.y;
long /*int*/ pattern = Cairo.cairo_pattern_create_for_surface (control.backgroundImage.surface);
if (pattern == 0) error (SWT.ERROR_NO_HANDLES);
Cairo.cairo_pattern_set_extend (pattern, Cairo.CAIRO_EXTEND_REPEAT);
if ((style & SWT.MIRRORED) != 0) {
double[] matrix = {-1, 0, 0, 1, 0, 0};
Cairo.cairo_pattern_set_matrix(pattern, matrix);
}
Cairo.cairo_set_source (cairo, pattern);
Cairo.cairo_pattern_destroy (pattern);
} else {
GdkColor color = control.getBackgroundColor ();
Cairo.cairo_set_source_rgba (cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, 1);
}
Cairo.cairo_rectangle (cairo, x, y, width, height);
Cairo.cairo_fill (cairo);
if (cairo != cr) Cairo.cairo_destroy(cairo);
return;
}
long /*int*/ gdkGC = OS.gdk_gc_new (window);
if (region != 0) OS.gdk_gc_set_clip_region (gdkGC, region);
if (control.backgroundImage != null) {
Point pt = display.map (this, control, 0, 0);
OS.gdk_gc_set_fill (gdkGC, OS.GDK_TILED);
OS.gdk_gc_set_ts_origin (gdkGC, -pt.x, -pt.y);
OS.gdk_gc_set_tile (gdkGC, control.backgroundImage.pixmap);
OS.gdk_draw_rectangle (window, gdkGC, 1, x, y, width, height);
} else {
GdkColor color = control.getBackgroundColor ();
OS.gdk_gc_set_foreground (gdkGC, color);
OS.gdk_draw_rectangle (window, gdkGC, 1, x, y, width, height);
}
OS.g_object_unref (gdkGC);
}
boolean drawGripper (GC gc, int x, int y, int width, int height, boolean vertical) {
long /*int*/ paintHandle = paintHandle ();
long /*int*/ window = gtk_widget_get_window (paintHandle);
if (window == 0) return false;
int orientation = vertical ? OS.GTK_ORIENTATION_HORIZONTAL : OS.GTK_ORIENTATION_VERTICAL;
if ((style & SWT.MIRRORED) != 0) x = getClientWidth () - width - x;
if (OS.GTK3) {
long /*int*/ context = OS.gtk_widget_get_style_context (paintHandle);
OS.gtk_style_context_save (context);
OS.gtk_style_context_add_class (context, OS.GTK_STYLE_CLASS_PANE_SEPARATOR);
OS.gtk_style_context_set_state (context, OS.GTK_STATE_FLAG_NORMAL);
OS.gtk_render_handle (context, gc.handle, x, y, width, height);
OS.gtk_style_context_restore (context);
} else {
OS.gtk_paint_handle (OS.gtk_widget_get_style (paintHandle), window, OS.GTK_STATE_NORMAL, OS.GTK_SHADOW_OUT, null, paintHandle, new byte [1], x, y, width, height, orientation);
}
return true;
}
void drawWidget (GC gc) {
}
void enableWidget (boolean enabled) {
OS.gtk_widget_set_sensitive (handle, enabled);
}
long /*int*/ enterExitHandle () {
return eventHandle ();
}
long /*int*/ eventHandle () {
return handle;
}
long /*int*/ eventWindow () {
long /*int*/ eventHandle = eventHandle ();
OS.gtk_widget_realize (eventHandle);
return gtk_widget_get_window (eventHandle);
}
void fixFocus (Control focusControl) {
Shell shell = getShell ();
Control control = this;
while (control != shell && (control = control.parent) != null) {
if (control.setFocus ()) return;
}
shell.setSavedFocus (focusControl);
long /*int*/ focusHandle = shell.vboxHandle;
gtk_widget_set_can_focus (focusHandle, true);
OS.gtk_widget_grab_focus (focusHandle);
// widget could be disposed at this point
if (isDisposed ()) return;
gtk_widget_set_can_focus (focusHandle, false);
}
void fixStyle () {
if (fixedHandle != 0) fixStyle (fixedHandle);
}
void fixStyle (long /*int*/ handle) {
/*
* Feature in GTK. Some GTK themes apply a different background to
* the contents of a GtkNotebook. However, in an SWT TabFolder, the
* children are not parented below the GtkNotebook widget, and usually
* have their own GtkFixed. The fix is to look up the correct style
* for a child of a GtkNotebook and apply its background to any GtkFixed
* widgets that are direct children of an SWT TabFolder.
*
* Note that this has to be when the theme settings changes and that it
* should not override the application background.
*/
if ((state & BACKGROUND) != 0) return;
if ((state & THEME_BACKGROUND) == 0) return;
if (!OS.GTK3) {
long /*int*/ childStyle = parent.childStyle ();
if (childStyle != 0) {
GdkColor color = new GdkColor();
OS.gtk_style_get_bg (childStyle, 0, color);
setBackgroundColor (color);
}
}
}
long /*int*/ focusHandle () {
return handle;
}
long /*int*/ fontHandle () {
return handle;
}
/**
* Returns the orientation of the receiver, which will be one of the
* constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>.
*
* @return the orientation style
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.7
*/
public int getOrientation () {
checkWidget();
return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
}
public int getTextDirection() {
checkWidget ();
/* return the widget orientation */
return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
}
boolean hasFocus () {
return this == display.getFocusControl();
}
void hookEvents () {
/* Connect the keyboard signals */
long /*int*/ focusHandle = focusHandle ();
int focusMask = OS.GDK_KEY_PRESS_MASK | OS.GDK_KEY_RELEASE_MASK | OS.GDK_FOCUS_CHANGE_MASK;
OS.gtk_widget_add_events (focusHandle, focusMask);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [POPUP_MENU], 0, display.closures [POPUP_MENU], false);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [SHOW_HELP], 0, display.closures [SHOW_HELP], false);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [KEY_PRESS_EVENT], 0, display.closures [KEY_PRESS_EVENT], false);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [KEY_RELEASE_EVENT], 0, display.closures [KEY_RELEASE_EVENT], false);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [FOCUS], 0, display.closures [FOCUS], false);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [FOCUS_IN_EVENT], 0, display.closures [FOCUS_IN_EVENT], false);
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [FOCUS_OUT_EVENT], 0, display.closures [FOCUS_OUT_EVENT], false);
/* Connect the mouse signals */
long /*int*/ eventHandle = eventHandle ();
int eventMask = OS.GDK_POINTER_MOTION_MASK | OS.GDK_BUTTON_PRESS_MASK | OS.GDK_BUTTON_RELEASE_MASK | OS.GDK_SCROLL_MASK | OS.GDK_SMOOTH_SCROLL_MASK;
OS.gtk_widget_add_events (eventHandle, eventMask);
OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT], false);
OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.closures [BUTTON_RELEASE_EVENT], false);
OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.closures [MOTION_NOTIFY_EVENT], false);
OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [SCROLL_EVENT], 0, display.closures [SCROLL_EVENT], false);
/* Connect enter/exit signals */
long /*int*/ enterExitHandle = enterExitHandle ();
int enterExitMask = OS.GDK_ENTER_NOTIFY_MASK | OS.GDK_LEAVE_NOTIFY_MASK;
OS.gtk_widget_add_events (enterExitHandle, enterExitMask);
OS.g_signal_connect_closure_by_id (enterExitHandle, display.signalIds [ENTER_NOTIFY_EVENT], 0, display.closures [ENTER_NOTIFY_EVENT], false);
OS.g_signal_connect_closure_by_id (enterExitHandle, display.signalIds [LEAVE_NOTIFY_EVENT], 0, display.closures [LEAVE_NOTIFY_EVENT], false);
/*
* Feature in GTK. Events such as mouse move are propagate up
* the widget hierarchy and are seen by the parent. This is the
* correct GTK behavior but not correct for SWT. The fix is to
* hook a signal after and stop the propagation using a negative
* event number to distinguish this case.
*
* The signal is hooked to the fixedHandle to catch events sent to
* lightweight widgets.
*/
long /*int*/ blockHandle = fixedHandle != 0 ? fixedHandle : eventHandle;
OS.g_signal_connect_closure_by_id (blockHandle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT_INVERSE], true);
OS.g_signal_connect_closure_by_id (blockHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.closures [BUTTON_RELEASE_EVENT_INVERSE], true);
OS.g_signal_connect_closure_by_id (blockHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.closures [MOTION_NOTIFY_EVENT_INVERSE], true);
/* Connect the event_after signal for both key and mouse */
OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
if (focusHandle != eventHandle) {
OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
}
/* Connect the paint signal */
long /*int*/ paintHandle = paintHandle ();
int paintMask = OS.GDK_EXPOSURE_MASK | OS.GDK_VISIBILITY_NOTIFY_MASK;
OS.gtk_widget_add_events (paintHandle, paintMask);
OS.g_signal_connect_closure_by_id (paintHandle, display.signalIds [EXPOSE_EVENT], 0, display.closures [EXPOSE_EVENT_INVERSE], false);
/*
* As of GTK 2.17.11, obscured controls no longer send expose
* events. It is no longer necessary to track visiblity notify
* events.
*/
if (OS.GTK_VERSION < OS.VERSION (2, 17, 11)) {
OS.g_signal_connect_closure_by_id (paintHandle, display.signalIds [VISIBILITY_NOTIFY_EVENT], 0, display.closures [VISIBILITY_NOTIFY_EVENT], false);
}
OS.g_signal_connect_closure_by_id (paintHandle, display.signalIds [EXPOSE_EVENT], 0, display.closures [EXPOSE_EVENT], true);
/* Connect the Input Method signals */
OS.g_signal_connect_closure_by_id (handle, display.signalIds [REALIZE], 0, display.closures [REALIZE], true);
OS.g_signal_connect_closure_by_id (handle, display.signalIds [UNREALIZE], 0, display.closures [UNREALIZE], false);
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) {
OS.g_signal_connect_closure (imHandle, OS.commit, display.closures [COMMIT], false);
OS.g_signal_connect_closure (imHandle, OS.preedit_changed, display.closures [PREEDIT_CHANGED], false);
}
OS.g_signal_connect_closure_by_id (paintHandle, display.signalIds [STYLE_SET], 0, display.closures [STYLE_SET], false);
long /*int*/ topHandle = topHandle ();
OS.g_signal_connect_closure_by_id (topHandle, display.signalIds [MAP], 0, display.closures [MAP], true);
}
boolean hooksPaint () {
return hooks (SWT.Paint) || filters (SWT.Paint);
}
long /*int*/ hoverProc (long /*int*/ widget) {
int [] x = new int [1], y = new int [1], mask = new int [1];
gdk_window_get_device_position (0, x, y, mask);
sendMouseEvent (SWT.MouseHover, 0, /*time*/0, x [0], y [0], false, mask [0]);
/* Always return zero in order to cancel the hover timer */
return 0;
}
long /*int*/ topHandle() {
if (fixedHandle != 0) return fixedHandle;
return super.topHandle ();
}
long /*int*/ paintHandle () {
long /*int*/ topHandle = topHandle ();
long /*int*/ paintHandle = handle;
while (paintHandle != topHandle) {
if (gtk_widget_get_has_window (paintHandle)) break;
paintHandle = OS.gtk_widget_get_parent (paintHandle);
}
return paintHandle;
}
long /*int*/ paintWindow () {
long /*int*/ paintHandle = paintHandle ();
OS.gtk_widget_realize (paintHandle);
return gtk_widget_get_window (paintHandle);
}
/**
* Prints the receiver and all children.
*
* @param gc the gc where the drawing occurs
* @return <code>true</code> if the operation was successful and <code>false</code> otherwise
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the gc is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.4
*/
public boolean print (GC gc) {
checkWidget ();
if (gc == null) error (SWT.ERROR_NULL_ARGUMENT);
if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
long /*int*/ topHandle = topHandle ();
OS.gtk_widget_realize (topHandle);
if (OS.GTK3) {
OS.gtk_widget_draw(topHandle, gc.handle);
return true;
}
long /*int*/ window = gtk_widget_get_window (topHandle);
GCData data = gc.getGCData ();
OS.gdk_window_process_updates (window, true);
long /*int*/ drawable = data.drawable;
if (drawable == 0) drawable = OS.gdk_get_default_root_window();
printWidget (gc, drawable, OS.gdk_drawable_get_depth (drawable), 0, 0);
return true;
}
void printWidget (GC gc, long /*int*/ drawable, int depth, int x, int y) {
boolean obscured = (state & OBSCURED) != 0;
state &= ~OBSCURED;
long /*int*/ topHandle = topHandle ();
long /*int*/ window = gtk_widget_get_window (topHandle);
printWindow (true, this, gc, drawable, depth, window, x, y);
if (obscured) state |= OBSCURED;
}
void printWindow (boolean first, Control control, GC gc, long /*int*/ drawable, int depth, long /*int*/ window, int x, int y) {
if (OS.gdk_drawable_get_depth (window) != depth) return;
GdkRectangle rect = new GdkRectangle ();
int [] width = new int [1], height = new int [1];
gdk_window_get_size (window, width, height);
rect.width = width [0];
rect.height = height [0];
OS.gdk_window_begin_paint_rect (window, rect);
long /*int*/ [] real_drawable = new long /*int*/ [1];
int [] x_offset = new int [1], y_offset = new int [1];
OS.gdk_window_get_internal_paint_info (window, real_drawable, x_offset, y_offset);
long /*int*/ [] userData = new long /*int*/ [1];
OS.gdk_window_get_user_data (window, userData);
if (userData [0] != 0) {
long /*int*/ eventPtr = OS.gdk_event_new (OS.GDK_EXPOSE);
GdkEventExpose event = new GdkEventExpose ();
event.type = OS.GDK_EXPOSE;
event.window = OS.g_object_ref (window);
event.area_width = rect.width;
event.area_height = rect.height;
event.region = OS.gdk_region_rectangle (rect);
OS.memmove (eventPtr, event, GdkEventExpose.sizeof);
OS.gtk_widget_send_expose (userData [0], eventPtr);
OS.gdk_event_free (eventPtr);
}
int srcX = x_offset [0], srcY = y_offset [0];
int destX = x, destY = y, destWidth = width [0], destHeight = height [0];
if (!first) {
int [] cX = new int [1], cY = new int [1];
OS.gdk_window_get_position (window, cX, cY);
long /*int*/ parentWindow = OS.gdk_window_get_parent (window);
int [] pW = new int [1], pH = new int [1];
gdk_window_get_size (parentWindow, pW, pH);
srcX = x_offset [0] - cX [0];
srcY = y_offset [0] - cY [0];
destX = x - cX [0];
destY = y - cY [0];
destWidth = Math.min (cX [0] + width [0], pW [0]);
destHeight = Math.min (cY [0] + height [0], pH [0]);
}
GCData gcData = gc.getGCData();
long /*int*/ cairo = gcData.cairo;
if (cairo != 0) {
long /*int*/ xDisplay = OS.gdk_x11_display_get_xdisplay(OS.gdk_display_get_default());
long /*int*/ xVisual = OS.gdk_x11_visual_get_xvisual(OS.gdk_visual_get_system());
long /*int*/ xDrawable = OS.GDK_PIXMAP_XID(real_drawable [0]);
long /*int*/ surface = Cairo.cairo_xlib_surface_create(xDisplay, xDrawable, xVisual, width [0], height [0]);
if (surface == 0) error(SWT.ERROR_NO_HANDLES);
Cairo.cairo_save(cairo);
Cairo.cairo_rectangle(cairo, destX , destY, destWidth, destHeight);
Cairo.cairo_clip(cairo);
Cairo.cairo_translate(cairo, destX, destY);
long /*int*/ pattern = Cairo.cairo_pattern_create_for_surface(surface);
if (pattern == 0) error(SWT.ERROR_NO_HANDLES);
Cairo.cairo_pattern_set_filter(pattern, Cairo.CAIRO_FILTER_BEST);
Cairo.cairo_set_source(cairo, pattern);
if (gcData.alpha != 0xFF) {
Cairo.cairo_paint_with_alpha(cairo, gcData.alpha / (float)0xFF);
} else {
Cairo.cairo_paint(cairo);
}
Cairo.cairo_restore(cairo);
Cairo.cairo_pattern_destroy(pattern);
Cairo.cairo_surface_destroy(surface);
} else {
OS.gdk_draw_drawable (drawable, gc.handle, real_drawable [0], srcX, srcY, destX, destY, destWidth, destHeight);
}
OS.gdk_window_end_paint (window);
long /*int*/ children = OS.gdk_window_get_children (window);
if (children != 0) {
long /*int*/ windows = children;
while (windows != 0) {
long /*int*/ child = OS.g_list_data (windows);
if (OS.gdk_window_is_visible (child)) {
long /*int*/ [] data = new long /*int*/ [1];
OS.gdk_window_get_user_data (child, data);
if (data [0] != 0) {
Widget widget = display.findWidget (data [0]);
if (widget == null || widget == control) {
int [] x_pos = new int [1], y_pos = new int [1];
OS.gdk_window_get_position (child, x_pos, y_pos);
printWindow (false, control, gc, drawable, depth, child, x + x_pos [0], y + y_pos [0]);
}
}
}
windows = OS.g_list_next (windows);
}
OS.g_list_free (children);
}
}
/**
* Returns the preferred size of the receiver.
* <p>
* The <em>preferred size</em> of a control is the size that it would
* best be displayed at. The width hint and height hint arguments
* allow the caller to ask a control questions such as "Given a particular
* width, how high does the control need to be to show all of the contents?"
* To indicate that the caller does not wish to constrain a particular
* dimension, the constant <code>SWT.DEFAULT</code> is passed for the hint.
* </p>
*
* @param wHint the width hint (can be <code>SWT.DEFAULT</code>)
* @param hHint the height hint (can be <code>SWT.DEFAULT</code>)
* @return the preferred size of the control
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Layout
* @see #getBorderWidth
* @see #getBounds
* @see #getSize
* @see #pack(boolean)
* @see "computeTrim, getClientArea for controls that implement them"
*/
public Point computeSize (int wHint, int hHint) {
return computeSize (wHint, hHint, true);
}
Widget computeTabGroup () {
if (isTabGroup()) return this;
return parent.computeTabGroup ();
}
Widget[] computeTabList() {
if (isTabGroup()) {
if (getVisible() && getEnabled()) {
return new Widget[] {this};
}
}
return new Widget[0];
}
Control computeTabRoot () {
Control[] tabList = parent._getTabList();
if (tabList != null) {
int index = 0;
while (index < tabList.length) {
if (tabList [index] == this) break;
index++;
}
if (index == tabList.length) {
if (isTabGroup ()) return this;
}
}
return parent.computeTabRoot ();
}
void checkBuffered () {
style |= SWT.DOUBLE_BUFFERED;
}
void checkBackground () {
Shell shell = getShell ();
if (this == shell) return;
state &= ~PARENT_BACKGROUND;
Composite composite = parent;
do {
int mode = composite.backgroundMode;
if (mode != SWT.INHERIT_NONE) {
if (mode == SWT.INHERIT_DEFAULT) {
Control control = this;
do {
if ((control.state & THEME_BACKGROUND) == 0) {
return;
}
control = control.parent;
} while (control != composite);
}
state |= PARENT_BACKGROUND;
return;
}
if (composite == shell) break;
composite = composite.parent;
} while (true);
}
void checkForeground () {
/*
* Feature in GTK 3. The widget foreground is inherited from the immediate
* parent. This is not the expected behavior for SWT. The fix is to avoid
* the inheritance by explicitly setting the default foreground on the widget.
*/
if (OS.GTK3) {
setForegroundColor (topHandle (), display.COLOR_WIDGET_FOREGROUND);
}
}
void checkBorder () {
if (getBorderWidth () == 0) style &= ~SWT.BORDER;
}
void checkMirrored () {
if ((style & SWT.RIGHT_TO_LEFT) != 0) style |= SWT.MIRRORED;
}
long /*int*/ childStyle () {
return parent.childStyle ();
}
void createWidget (int index) {
state |= DRAG_DETECT;
checkOrientation (parent);
super.createWidget (index);
checkBackground ();
checkForeground ();
if ((state & PARENT_BACKGROUND) != 0) setParentBackground ();
checkBuffered ();
showWidget ();
setInitialBounds ();
setZOrder (null, false, false);
setRelations ();
checkMirrored ();
checkBorder ();
}
/**
* Returns the preferred size of the receiver.
* <p>
* The <em>preferred size</em> of a control is the size that it would
* best be displayed at. The width hint and height hint arguments
* allow the caller to ask a control questions such as "Given a particular
* width, how high does the control need to be to show all of the contents?"
* To indicate that the caller does not wish to constrain a particular
* dimension, the constant <code>SWT.DEFAULT</code> is passed for the hint.
* </p><p>
* If the changed flag is <code>true</code>, it indicates that the receiver's
* <em>contents</em> have changed, therefore any caches that a layout manager
* containing the control may have been keeping need to be flushed. When the
* control is resized, the changed flag will be <code>false</code>, so layout
* manager caches can be retained.
* </p>
*
* @param wHint the width hint (can be <code>SWT.DEFAULT</code>)
* @param hHint the height hint (can be <code>SWT.DEFAULT</code>)
* @param changed <code>true</code> if the control's contents have changed, and <code>false</code> otherwise
* @return the preferred size of the control.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Layout
* @see #getBorderWidth
* @see #getBounds
* @see #getSize
* @see #pack(boolean)
* @see "computeTrim, getClientArea for controls that implement them"
*/
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget();
if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
return computeNativeSize (handle, wHint, hHint, changed);
}
Point computeNativeSize (long /*int*/ h, int wHint, int hHint, boolean changed) {
int width = wHint, height = hHint;
if (OS.GTK3){
if (wHint == SWT.DEFAULT && hHint == SWT.DEFAULT) {
GtkRequisition requisition = new GtkRequisition ();
OS.gtk_widget_get_preferred_size (h, requisition, null);
width = requisition.width;
height = requisition.height;
} else if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
int [] minimum_size = new int [1];
if (wHint == SWT.DEFAULT) {
OS.gtk_widget_get_preferred_width_for_height (h, height, minimum_size, null);
width = minimum_size [0];
} else {
OS.gtk_widget_get_preferred_height_for_width (h, width, minimum_size, null);
height = minimum_size [0];
}
}
return new Point(width, height);
}
if (wHint == SWT.DEFAULT && hHint == SWT.DEFAULT) {
GtkRequisition requisition = new GtkRequisition ();
gtk_widget_size_request (h, requisition);
width = OS.GTK_WIDGET_REQUISITION_WIDTH (h);
height = OS.GTK_WIDGET_REQUISITION_HEIGHT (h);
} else if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
int [] reqWidth = new int [1], reqHeight = new int [1];
OS.gtk_widget_get_size_request (h, reqWidth, reqHeight);
OS.gtk_widget_set_size_request (h, wHint, hHint);
GtkRequisition requisition = new GtkRequisition ();
gtk_widget_size_request (h, requisition);
OS.gtk_widget_set_size_request (h, reqWidth [0], reqHeight [0]);
width = wHint == SWT.DEFAULT ? requisition.width : wHint;
height = hHint == SWT.DEFAULT ? requisition.height : hHint;
}
return new Point (width, height);
}
void forceResize () {
/*
* Force size allocation on all children of this widget's
* topHandle. Note that all calls to gtk_widget_size_allocate()
* must be preceded by a call to gtk_widget_size_request().
*/
long /*int*/ topHandle = topHandle ();
GtkRequisition requisition = new GtkRequisition ();
gtk_widget_size_request (topHandle, requisition);
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation(topHandle, allocation);
OS.gtk_widget_size_allocate (topHandle, allocation);
}
/**
* Returns the accessible object for the receiver.
* <p>
* If this is the first time this object is requested,
* then the object is created and returned. The object
* returned by getAccessible() does not need to be disposed.
* </p>
*
* @return the accessible object
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Accessible#addAccessibleListener
* @see Accessible#addAccessibleControlListener
*
* @since 2.0
*/
public Accessible getAccessible () {
checkWidget ();
return _getAccessible ();
}
Accessible _getAccessible () {
if (accessible == null) {
accessible = Accessible.internal_new_Accessible (this);
}
return accessible;
}
/**
* Returns a rectangle describing the receiver's size and location
* relative to its parent (or its display if its parent is null),
* unless the receiver is a shell. In this case, the location is
* relative to the display.
*
* @return the receiver's bounding rectangle
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Rectangle getBounds () {
checkWidget();
long /*int*/ topHandle = topHandle ();
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation (topHandle, allocation);
int x = allocation.x;
int y = allocation.y;
int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
int height = (state & ZERO_HEIGHT) != 0 ? 0 :allocation.height;
if ((parent.style & SWT.MIRRORED) != 0) x = parent.getClientWidth () - width - x;
return new Rectangle (x, y, width, height);
}
/**
* Sets the receiver's size and location to the rectangular
* area specified by the argument. The <code>x</code> and
* <code>y</code> fields of the rectangle are relative to
* the receiver's parent (or its display if its parent is null).
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause that
* value to be set to zero instead.
* </p>
*
* @param rect the new bounds for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setBounds (Rectangle rect) {
checkWidget ();
if (rect == null) error (SWT.ERROR_NULL_ARGUMENT);
setBounds (rect.x, rect.y, Math.max (0, rect.width), Math.max (0, rect.height), true, true);
}
/**
* Sets the receiver's size and location to the rectangular
* area specified by the arguments. The <code>x</code> and
* <code>y</code> arguments are relative to the receiver's
* parent (or its display if its parent is null), unless
* the receiver is a shell. In this case, the <code>x</code>
* and <code>y</code> arguments are relative to the display.
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause that
* value to be set to zero instead.
* </p>
*
* @param x the new x coordinate for the receiver
* @param y the new y coordinate for the receiver
* @param width the new width for the receiver
* @param height the new height for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setBounds (int x, int y, int width, int height) {
checkWidget();
setBounds (x, y, Math.max (0, width), Math.max (0, height), true, true);
}
void markLayout (boolean changed, boolean all) {
/* Do nothing */
}
void modifyStyle (long /*int*/ handle, long /*int*/ style) {
super.modifyStyle(handle, style);
/*
* Bug in GTK. When changing the style of a control that
* has had a region set on it, the region is lost. The
* fix is to set the region again.
*/
if (region != null) OS.gdk_window_shape_combine_region (gtk_widget_get_window (topHandle ()), region.handle, 0, 0);
}
void moveHandle (int x, int y) {
long /*int*/ topHandle = topHandle ();
long /*int*/ parentHandle = parent.parentingHandle ();
if (OS.GTK3) {
OS.swt_fixed_move (parentHandle, topHandle, x, y);
} else {
/*
* Feature in GTK. Calling gtk_fixed_move() to move a child causes
* the whole parent to redraw. This is a performance problem. The
* fix is temporarily mark the parent not visible during the move.
*
* NOTE: Because every widget in SWT has an X window, the new and
* old bounds of the child are correctly redrawn.
*
* NOTE: There is no API in GTK 3 to only set the GTK_VISIBLE bit.
*/
boolean reset = gtk_widget_get_visible (parentHandle);
gtk_widget_set_visible (parentHandle, false);
OS.gtk_fixed_move (parentHandle, topHandle, x, y);
gtk_widget_set_visible (parentHandle, reset);
}
}
void resizeHandle (int width, int height) {
long /*int*/ topHandle = topHandle ();
if (OS.GTK3) {
OS.swt_fixed_resize (OS.gtk_widget_get_parent (topHandle), topHandle, width, height);
if (topHandle != handle) {
OS.swt_fixed_resize (OS.gtk_widget_get_parent (handle), handle, width, height);
}
} else {
OS.gtk_widget_set_size_request (topHandle, width, height);
if (topHandle != handle) OS.gtk_widget_set_size_request (handle, width, height);
}
}
int setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
long /*int*/ topHandle = topHandle ();
boolean sendMove = move;
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation (topHandle, allocation);
if ((parent.style & SWT.MIRRORED) != 0) {
int clientWidth = parent.getClientWidth ();
int oldWidth = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
int oldX = clientWidth - oldWidth - allocation.x;
if (move) {
sendMove &= x != oldX;
x = clientWidth - (resize ? width : oldWidth) - x;
} else {
move = true;
x = clientWidth - (resize ? width : oldWidth) - oldX;
y = allocation.y;
}
}
boolean sameOrigin = true, sameExtent = true;
if (move) {
int oldX = allocation.x;
int oldY = allocation.y;
sameOrigin = x == oldX && y == oldY;
if (!sameOrigin) {
if (enableWindow != 0) {
OS.gdk_window_move (enableWindow, x, y);
}
moveHandle (x, y);
}
}
int clientWidth = 0;
if (resize) {
int oldWidth = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
int oldHeight = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
sameExtent = width == oldWidth && height == oldHeight;
if (!sameExtent && (style & SWT.MIRRORED) != 0) clientWidth = getClientWidth ();
if (!sameExtent && !(width == 0 && height == 0)) {
int newWidth = Math.max (1, width);
int newHeight = Math.max (1, height);
if (redrawWindow != 0) {
OS.gdk_window_resize (redrawWindow, newWidth, newHeight);
}
if (enableWindow != 0) {
OS.gdk_window_resize (enableWindow, newWidth, newHeight);
}
resizeHandle (newWidth, newHeight);
}
}
if (!sameOrigin || !sameExtent) {
/*
* Cause a size allocation this widget's topHandle. Note that
* all calls to gtk_widget_size_allocate() must be preceded by
* a call to gtk_widget_size_request().
*/
GtkRequisition requisition = new GtkRequisition ();
gtk_widget_size_request (topHandle, requisition);
if (move) {
allocation.x = x;
allocation.y = y;
}
if (resize) {
allocation.width = width;
allocation.height = height;
}
OS.gtk_widget_size_allocate (topHandle, allocation);
}
/*
* Bug in GTK. Widgets cannot be sized smaller than 1x1.
* The fix is to hide zero-sized widgets and show them again
* when they are resized larger.
*/
if (!sameExtent) {
state = (width == 0) ? state | ZERO_WIDTH : state & ~ZERO_WIDTH;
state = (height == 0) ? state | ZERO_HEIGHT : state & ~ZERO_HEIGHT;
if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) != 0) {
if (enableWindow != 0) {
OS.gdk_window_hide (enableWindow);
}
OS.gtk_widget_hide (topHandle);
} else {
if ((state & HIDDEN) == 0) {
if (enableWindow != 0) {
OS.gdk_window_show_unraised (enableWindow);
}
OS.gtk_widget_show (topHandle);
}
}
if ((style & SWT.MIRRORED) != 0) moveChildren (clientWidth);
}
int result = 0;
if (move && !sameOrigin) {
Control control = findBackgroundControl ();
if (control != null && control.backgroundImage != null) {
if (isVisible ()) redrawWidget (0, 0, 0, 0, true, true, true);
}
if (sendMove) sendEvent (SWT.Move);
result |= MOVED;
}
if (resize && !sameExtent) {
sendEvent (SWT.Resize);
result |= RESIZED;
}
return result;
}
/**
* Returns a point describing the receiver's location relative
* to its parent (or its display if its parent is null), unless
* the receiver is a shell. In this case, the point is
* relative to the display.
*
* @return the receiver's location
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Point getLocation () {
checkWidget();
long /*int*/ topHandle = topHandle ();
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation (topHandle, allocation);
int x = allocation.x;
int y = allocation.y;
if ((parent.style & SWT.MIRRORED) != 0) {
int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
x = parent.getClientWidth () - width - x;
}
return new Point (x, y);
}
/**
* Sets the receiver's location to the point specified by
* the arguments which are relative to the receiver's
* parent (or its display if its parent is null), unless
* the receiver is a shell. In this case, the point is
* relative to the display.
*
* @param location the new location for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setLocation (Point location) {
checkWidget ();
if (location == null) error (SWT.ERROR_NULL_ARGUMENT);
setBounds (location.x, location.y, 0, 0, true, false);
}
/**
* Sets the receiver's location to the point specified by
* the arguments which are relative to the receiver's
* parent (or its display if its parent is null), unless
* the receiver is a shell. In this case, the point is
* relative to the display.
*
* @param x the new x coordinate for the receiver
* @param y the new y coordinate for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setLocation(int x, int y) {
checkWidget();
setBounds (x, y, 0, 0, true, false);
}
/**
* Returns a point describing the receiver's size. The
* x coordinate of the result is the width of the receiver.
* The y coordinate of the result is the height of the
* receiver.
*
* @return the receiver's size
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Point getSize () {
checkWidget();
long /*int*/ topHandle = topHandle ();
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation (topHandle, allocation);
int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
int height = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
return new Point (width, height);
}
/**
* Sets the receiver's size to the point specified by the argument.
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause them to be
* set to zero instead.
* </p>
*
* @param size the new size for the receiver
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setSize (Point size) {
checkWidget ();
if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
setBounds (0, 0, Math.max (0, size.x), Math.max (0, size.y), false, true);
}
/**
* Sets the shape of the control to the region specified
* by the argument. When the argument is null, the
* default shape of the control is restored.
*
* @param region the region that defines the shape of the control (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the region has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.4
*/
public void setRegion (Region region) {
checkWidget ();
if (region != null && region.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
long /*int*/ window = gtk_widget_get_window (topHandle ());
long /*int*/ shape_region = (region == null) ? 0 : region.handle;
OS.gdk_window_shape_combine_region (window, shape_region, 0, 0);
this.region = region;
}
void setRelations () {
long /*int*/ parentHandle = parent.parentingHandle ();
long /*int*/ list = OS.gtk_container_get_children (parentHandle);
if (list == 0) return;
int count = OS.g_list_length (list);
if (count > 1) {
/*
* the receiver is the last item in the list, so its predecessor will
* be the second-last item in the list
*/
long /*int*/ handle = OS.g_list_nth_data (list, count - 2);
if (handle != 0) {
Widget widget = display.getWidget (handle);
if (widget != null && widget != this) {
if (widget instanceof Control) {
Control sibling = (Control)widget;
sibling.addRelation (this);
}
}
}
}
OS.g_list_free (list);
}
/**
* Sets the receiver's size to the point specified by the arguments.
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause that
* value to be set to zero instead.
* </p>
*
* @param width the new width for the receiver
* @param height the new height for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setSize (int width, int height) {
checkWidget();
setBounds (0, 0, Math.max (0, width), Math.max (0, height), false, true);
}
boolean isActive () {
return getShell ().getModalShell () == null && display.getModalDialog () == null;
}
/*
* Answers a boolean indicating whether a Label that precedes the receiver in
* a layout should be read by screen readers as the recevier's label.
*/
boolean isDescribedByLabel () {
return true;
}
boolean isFocusHandle (long /*int*/ widget) {
return widget == focusHandle ();
}
/**
* Moves the receiver above the specified control in the
* drawing order. If the argument is null, then the receiver
* is moved to the top of the drawing order. The control at
* the top of the drawing order will not be covered by other
* controls even if they occupy intersecting areas.
*
* @param control the sibling control (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Control#moveBelow
* @see Composite#getChildren
*/
public void moveAbove (Control control) {
checkWidget();
if (control != null) {
if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
if (parent != control.parent) return;
if (this == control) return;
}
setZOrder (control, true, true);
}
/**
* Moves the receiver below the specified control in the
* drawing order. If the argument is null, then the receiver
* is moved to the bottom of the drawing order. The control at
* the bottom of the drawing order will be covered by all other
* controls which occupy intersecting areas.
*
* @param control the sibling control (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Control#moveAbove
* @see Composite#getChildren
*/
public void moveBelow (Control control) {
checkWidget();
if (control != null) {
if (control.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
if (parent != control.parent) return;
if (this == control) return;
}
setZOrder (control, false, true);
}
void moveChildren (int oldWidth) {
}
/**
* Causes the receiver to be resized to its preferred size.
* For a composite, this involves computing the preferred size
* from its layout, if there is one.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #computeSize(int, int, boolean)
*/
public void pack () {
pack (true);
}
/**
* Causes the receiver to be resized to its preferred size.
* For a composite, this involves computing the preferred size
* from its layout, if there is one.
* <p>
* If the changed flag is <code>true</code>, it indicates that the receiver's
* <em>contents</em> have changed, therefore any caches that a layout manager
* containing the control may have been keeping need to be flushed. When the
* control is resized, the changed flag will be <code>false</code>, so layout
* manager caches can be retained.
* </p>
*
* @param changed whether or not the receiver's contents have changed
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #computeSize(int, int, boolean)
*/
public void pack (boolean changed) {
setSize (computeSize (SWT.DEFAULT, SWT.DEFAULT, changed));
}
/**
* Sets the layout data associated with the receiver to the argument.
*
* @param layoutData the new layout data for the receiver.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setLayoutData (Object layoutData) {
checkWidget();
this.layoutData = layoutData;
}
/**
* Returns a point which is the result of converting the
* argument, which is specified in display relative coordinates,
* to coordinates relative to the receiver.
* <p>
* @param x the x coordinate to be translated
* @param y the y coordinate to be translated
* @return the translated coordinates
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 2.1
*/
public Point toControl (int x, int y) {
checkWidget ();
long /*int*/ window = eventWindow ();
int [] origin_x = new int [1], origin_y = new int [1];
OS.gdk_window_get_origin (window, origin_x, origin_y);
x -= origin_x [0];
y -= origin_y [0];
if ((style & SWT.MIRRORED) != 0) x = getClientWidth () - x;
return new Point (x, y);
}
/**
* Returns a point which is the result of converting the
* argument, which is specified in display relative coordinates,
* to coordinates relative to the receiver.
* <p>
* @param point the point to be translated (must not be null)
* @return the translated coordinates
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Point toControl (Point point) {
checkWidget ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
return toControl (point.x, point.y);
}
/**
* Returns a point which is the result of converting the
* argument, which is specified in coordinates relative to
* the receiver, to display relative coordinates.
* <p>
* @param x the x coordinate to be translated
* @param y the y coordinate to be translated
* @return the translated coordinates
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 2.1
*/
public Point toDisplay (int x, int y) {
checkWidget();
long /*int*/ window = eventWindow ();
int [] origin_x = new int [1], origin_y = new int [1];
OS.gdk_window_get_origin (window, origin_x, origin_y);
if ((style & SWT.MIRRORED) != 0) x = getClientWidth () - x;
x += origin_x [0];
y += origin_y [0];
return new Point (x, y);
}
/**
* Returns a point which is the result of converting the
* argument, which is specified in coordinates relative to
* the receiver, to display relative coordinates.
* <p>
* @param point the point to be translated (must not be null)
* @return the translated coordinates
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Point toDisplay (Point point) {
checkWidget();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
return toDisplay (point.x, point.y);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control is moved or resized, by sending
* it one of the messages defined in the <code>ControlListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see ControlListener
* @see #removeControlListener
*/
public void addControlListener(ControlListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Resize,typedListener);
addListener (SWT.Move,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when a drag gesture occurs, by sending it
* one of the messages defined in the <code>DragDetectListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see DragDetectListener
* @see #removeDragDetectListener
*
* @since 3.3
*/
public void addDragDetectListener (DragDetectListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.DragDetect,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control gains or loses focus, by sending
* it one of the messages defined in the <code>FocusListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see FocusListener
* @see #removeFocusListener
*/
public void addFocusListener(FocusListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.FocusIn,typedListener);
addListener(SWT.FocusOut,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when gesture events are generated for the control,
* by sending it one of the messages defined in the
* <code>GestureListener</code> interface.
* <p>
* NOTE: If <code>setTouchEnabled(true)</code> has previously been
* invoked on the receiver then <code>setTouchEnabled(false)</code>
* must be invoked on it to specify that gesture events should be
* sent instead of touch events.
* </p>
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see GestureListener
* @see #removeGestureListener
* @see #setTouchEnabled
*
* @since 3.7
*/
public void addGestureListener (GestureListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Gesture, typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when help events are generated for the control,
* by sending it one of the messages defined in the
* <code>HelpListener</code> interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see HelpListener
* @see #removeHelpListener
*/
public void addHelpListener (HelpListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Help, typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when keys are pressed and released on the system keyboard, by sending
* it one of the messages defined in the <code>KeyListener</code>
* interface.
* <p>
* When a key listener is added to a control, the control
* will take part in widget traversal. By default, all
* traversal keys (such as the tab key and so on) are
* delivered to the control. In order for a control to take
* part in traversal, it should listen for traversal events.
* Otherwise, the user can traverse into a control but not
* out. Note that native controls such as table and tree
* implement key traversal in the operating system. It is
* not necessary to add traversal listeners for these controls,
* unless you want to override the default traversal.
* </p>
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see KeyListener
* @see #removeKeyListener
*/
public void addKeyListener(KeyListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.KeyUp,typedListener);
addListener(SWT.KeyDown,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the platform-specific context menu trigger
* has occurred, by sending it one of the messages defined in
* the <code>MenuDetectListener</code> interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MenuDetectListener
* @see #removeMenuDetectListener
*
* @since 3.3
*/
public void addMenuDetectListener (MenuDetectListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.MenuDetect, typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when mouse buttons are pressed and released, by sending
* it one of the messages defined in the <code>MouseListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseListener
* @see #removeMouseListener
*/
public void addMouseListener(MouseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.MouseDown,typedListener);
addListener(SWT.MouseUp,typedListener);
addListener(SWT.MouseDoubleClick,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the mouse moves, by sending it one of the
* messages defined in the <code>MouseMoveListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseMoveListener
* @see #removeMouseMoveListener
*/
public void addMouseMoveListener(MouseMoveListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.MouseMove,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the mouse passes or hovers over controls, by sending
* it one of the messages defined in the <code>MouseTrackListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseTrackListener
* @see #removeMouseTrackListener
*/
public void addMouseTrackListener (MouseTrackListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.MouseEnter,typedListener);
addListener (SWT.MouseExit,typedListener);
addListener (SWT.MouseHover,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the mouse wheel is scrolled, by sending
* it one of the messages defined in the
* <code>MouseWheelListener</code> interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseWheelListener
* @see #removeMouseWheelListener
*
* @since 3.3
*/
public void addMouseWheelListener (MouseWheelListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.MouseWheel, typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the receiver needs to be painted, by sending it
* one of the messages defined in the <code>PaintListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see PaintListener
* @see #removePaintListener
*/
public void addPaintListener(PaintListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.Paint,typedListener);
}
void addRelation (Control control) {
}
/**
* Adds the listener to the collection of listeners who will
* be notified when touch events occur, by sending it
* one of the messages defined in the <code>TouchListener</code>
* interface.
* <p>
* NOTE: You must also call <code>setTouchEnabled(true)</code> to
* specify that touch events should be sent, which will cause gesture
* events to not be sent.
* </p>
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see TouchListener
* @see #removeTouchListener
* @see #setTouchEnabled
*
* @since 3.7
*/
public void addTouchListener (TouchListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Touch,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when traversal events occur, by sending it
* one of the messages defined in the <code>TraverseListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see TraverseListener
* @see #removeTraverseListener
*/
public void addTraverseListener (TraverseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Traverse,typedListener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control is moved or resized.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see ControlListener
* @see #addControlListener
*/
public void removeControlListener (ControlListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Move, listener);
eventTable.unhook (SWT.Resize, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when a drag gesture occurs.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see DragDetectListener
* @see #addDragDetectListener
*
* @since 3.3
*/
public void removeDragDetectListener(DragDetectListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.DragDetect, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control gains or loses focus.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see FocusListener
* @see #addFocusListener
*/
public void removeFocusListener(FocusListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.FocusIn, listener);
eventTable.unhook (SWT.FocusOut, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when gesture events are generated for the control.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see GestureListener
* @see #addGestureListener
*
* @since 3.7
*/
public void removeGestureListener (GestureListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.Gesture, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the help events are generated for the control.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see HelpListener
* @see #addHelpListener
*/
public void removeHelpListener (HelpListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Help, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when keys are pressed and released on the system keyboard.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see KeyListener
* @see #addKeyListener
*/
public void removeKeyListener(KeyListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.KeyUp, listener);
eventTable.unhook (SWT.KeyDown, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the platform-specific context menu trigger has
* occurred.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MenuDetectListener
* @see #addMenuDetectListener
*
* @since 3.3
*/
public void removeMenuDetectListener (MenuDetectListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.MenuDetect, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when mouse buttons are pressed and released.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseListener
* @see #addMouseListener
*/
public void removeMouseListener (MouseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.MouseDown, listener);
eventTable.unhook (SWT.MouseUp, listener);
eventTable.unhook (SWT.MouseDoubleClick, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the mouse moves.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseMoveListener
* @see #addMouseMoveListener
*/
public void removeMouseMoveListener(MouseMoveListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.MouseMove, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the mouse passes or hovers over controls.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseTrackListener
* @see #addMouseTrackListener
*/
public void removeMouseTrackListener(MouseTrackListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.MouseEnter, listener);
eventTable.unhook (SWT.MouseExit, listener);
eventTable.unhook (SWT.MouseHover, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the mouse wheel is scrolled.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see MouseWheelListener
* @see #addMouseWheelListener
*
* @since 3.3
*/
public void removeMouseWheelListener (MouseWheelListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.MouseWheel, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the receiver needs to be painted.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see PaintListener
* @see #addPaintListener
*/
public void removePaintListener(PaintListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.Paint, listener);
}
/*
* Remove "Labelled by" relation from the receiver.
*/
void removeRelation () {
if (!isDescribedByLabel ()) return; /* there will not be any */
if (labelRelation != null) {
_getAccessible().removeRelation (ACC.RELATION_LABELLED_BY, labelRelation._getAccessible());
labelRelation = null;
}
}
/**
* Removes the listener from the collection of listeners who will
* be notified when touch events occur.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see TouchListener
* @see #addTouchListener
*
* @since 3.7
*/
public void removeTouchListener(TouchListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Touch, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when traversal events occur.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see TraverseListener
* @see #addTraverseListener
*/
public void removeTraverseListener(TraverseListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Traverse, listener);
}
/**
* Detects a drag and drop gesture. This method is used
* to detect a drag gesture when called from within a mouse
* down listener.
*
* <p>By default, a drag is detected when the gesture
* occurs anywhere within the client area of a control.
* Some controls, such as tables and trees, override this
* behavior. In addition to the operating system specific
* drag gesture, they require the mouse to be inside an
* item. Custom widget writers can use <code>setDragDetect</code>
* to disable the default detection, listen for mouse down,
* and then call <code>dragDetect()</code> from within the
* listener to conditionally detect a drag.
* </p>
*
* @param event the mouse down event
*
* @return <code>true</code> if the gesture occurred, and <code>false</code> otherwise.
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT if the event is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see DragDetectListener
* @see #addDragDetectListener
*
* @see #getDragDetect
* @see #setDragDetect
*
* @since 3.3
*/
public boolean dragDetect (Event event) {
checkWidget ();
if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
return dragDetect (event.button, event.count, event.stateMask, event.x, event.y);
}
/**
* Detects a drag and drop gesture. This method is used
* to detect a drag gesture when called from within a mouse
* down listener.
*
* <p>By default, a drag is detected when the gesture
* occurs anywhere within the client area of a control.
* Some controls, such as tables and trees, override this
* behavior. In addition to the operating system specific
* drag gesture, they require the mouse to be inside an
* item. Custom widget writers can use <code>setDragDetect</code>
* to disable the default detection, listen for mouse down,
* and then call <code>dragDetect()</code> from within the
* listener to conditionally detect a drag.
* </p>
*
* @param event the mouse down event
*
* @return <code>true</code> if the gesture occurred, and <code>false</code> otherwise.
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT if the event is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see DragDetectListener
* @see #addDragDetectListener
*
* @see #getDragDetect
* @see #setDragDetect
*
* @since 3.3
*/
public boolean dragDetect (MouseEvent event) {
checkWidget ();
if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
return dragDetect (event.button, event.count, event.stateMask, event.x, event.y);
}
boolean dragDetect (int button, int count, int stateMask, int x, int y) {
if (button != 1 || count != 1) return false;
if (!dragDetect (x, y, false, true, null)) return false;
return sendDragEvent (button, stateMask, x, y, true);
}
boolean dragDetect (int x, int y, boolean filter, boolean dragOnTimeout, boolean [] consume) {
boolean quit = false, dragging = false;
while (!quit) {
long /*int*/ eventPtr = 0;
/*
* There should be an event on the queue already, but
* in cases where there isn't one, stop trying after
* half a second.
*/
long timeout = System.currentTimeMillis() + 500;
while (System.currentTimeMillis() < timeout) {
eventPtr = OS.gdk_event_get ();
if (eventPtr != 0) {
break;
} else {
try {Thread.sleep(50);} catch (Exception ex) {}
}
}
if (eventPtr == 0) return dragOnTimeout;
switch (OS.GDK_EVENT_TYPE (eventPtr)) {
case OS.GDK_MOTION_NOTIFY: {
GdkEventMotion gdkMotionEvent = new GdkEventMotion ();
OS.memmove (gdkMotionEvent, eventPtr, GdkEventMotion.sizeof);
if ((gdkMotionEvent.state & OS.GDK_BUTTON1_MASK) != 0) {
if (OS.gtk_drag_check_threshold (handle, x, y, (int) gdkMotionEvent.x, (int) gdkMotionEvent.y)) {
dragging = true;
quit = true;
}
} else {
quit = true;
}
int [] newX = new int [1], newY = new int [1];
gdk_window_get_device_position (gdkMotionEvent.window, newX, newY, null);
break;
}
case OS.GDK_KEY_PRESS:
case OS.GDK_KEY_RELEASE: {
GdkEventKey gdkEvent = new GdkEventKey ();
OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof);
if (gdkEvent.keyval == OS.GDK_Escape) quit = true;
break;
}
case OS.GDK_BUTTON_RELEASE:
case OS.GDK_BUTTON_PRESS:
case OS.GDK_2BUTTON_PRESS:
case OS.GDK_3BUTTON_PRESS: {
OS.gdk_event_put (eventPtr);
quit = true;
break;
}
default:
OS.gtk_main_do_event (eventPtr);
}
OS.gdk_event_free (eventPtr);
}
return dragging;
}
boolean filterKey (int keyval, long /*int*/ event) {
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) {
return OS.gtk_im_context_filter_keypress (imHandle, event);
}
return false;
}
Control findBackgroundControl () {
if ((state & BACKGROUND) != 0 || backgroundImage != null) return this;
return (state & PARENT_BACKGROUND) != 0 ? parent.findBackgroundControl () : null;
}
Menu [] findMenus (Control control) {
if (menu != null && this != control) return new Menu [] {menu};
return new Menu [0];
}
void fixChildren (Shell newShell, Shell oldShell, Decorations newDecorations, Decorations oldDecorations, Menu [] menus) {
oldShell.fixShell (newShell, this);
oldDecorations.fixDecorations (newDecorations, this, menus);
}
long /*int*/ fixedMapProc (long /*int*/ widget) {
gtk_widget_set_mapped (widget, true);
long /*int*/ widgetList = OS.gtk_container_get_children (widget);
if (widgetList != 0) {
long /*int*/ widgets = widgetList;
while (widgets != 0) {
long /*int*/ child = OS.g_list_data (widgets);
if (gtk_widget_get_visible (child) && OS.gtk_widget_get_child_visible (child) && !gtk_widget_get_mapped (child)) {
OS.gtk_widget_map (child);
}
widgets = OS.g_list_next (widgets);
}
OS.g_list_free (widgetList);
}
if (gtk_widget_get_has_window (widget)) {
OS.gdk_window_show_unraised (gtk_widget_get_window (widget));
}
return 0;
}
void fixModal(long /*int*/ group, long /*int*/ modalGroup) {
}
/**
* Forces the receiver to have the <em>keyboard focus</em>, causing
* all keyboard events to be delivered to it.
*
* @return <code>true</code> if the control got focus, and <code>false</code> if it was unable to.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #setFocus
*/
public boolean forceFocus () {
checkWidget();
if (display.focusEvent == SWT.FocusOut) return false;
Shell shell = getShell ();
shell.setSavedFocus (this);
if (!isEnabled () || !isVisible ()) return false;
shell.bringToTop (false);
return forceFocus (focusHandle ());
}
boolean forceFocus (long /*int*/ focusHandle) {
if (gtk_widget_has_focus (focusHandle)) return true;
/* When the control is zero sized it must be realized */
OS.gtk_widget_realize (focusHandle);
OS.gtk_widget_grab_focus (focusHandle);
// widget could be disposed at this point
if (isDisposed ()) return false;
Shell shell = getShell ();
long /*int*/ shellHandle = shell.shellHandle;
long /*int*/ handle = OS.gtk_window_get_focus (shellHandle);
while (handle != 0) {
if (handle == focusHandle) {
/* Cancel any previous ignoreFocus requests */
display.ignoreFocus = false;
return true;
}
Widget widget = display.getWidget (handle);
if (widget != null && widget instanceof Control) {
return widget == this;
}
handle = OS.gtk_widget_get_parent (handle);
}
return false;
}
/**
* Returns the receiver's background color.
* <p>
* Note: This operation is a hint and may be overridden by the platform.
* For example, on some versions of Windows the background of a TabFolder,
* is a gradient rather than a solid color.
* </p>
* @return the background color
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Color getBackground () {
checkWidget();
Control control = findBackgroundControl ();
if (control == null) control = this;
return Color.gtk_new (display, control.getBackgroundColor ());
}
GdkColor getBackgroundColor () {
return getBgColor ();
}
/**
* Returns the receiver's background image.
*
* @return the background image
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.2
*/
public Image getBackgroundImage () {
checkWidget ();
Control control = findBackgroundControl ();
if (control == null) control = this;
return control.backgroundImage;
}
GdkColor getContextBackground () {
long /*int*/ fontHandle = fontHandle ();
long /*int*/ context = OS.gtk_widget_get_style_context (fontHandle);
GdkRGBA rgba = new GdkRGBA ();
OS.gtk_style_context_get_background_color (context, OS.GTK_STATE_FLAG_NORMAL, rgba);
if (rgba.alpha == 0) {
return display.COLOR_WIDGET_BACKGROUND;
}
GdkColor color = new GdkColor ();
color.red = (short)(rgba.red * 0xFFFF);
color.green = (short)(rgba.green * 0xFFFF);
color.blue = (short)(rgba.blue * 0xFFFF);
return color;
}
GdkColor getContextColor () {
long /*int*/ fontHandle = fontHandle ();
long /*int*/ context = OS.gtk_widget_get_style_context (fontHandle);
GdkRGBA rgba = new GdkRGBA ();
OS.gtk_style_context_get_color (context, OS.GTK_STATE_FLAG_NORMAL, rgba);
GdkColor color = new GdkColor ();
color.red = (short)(rgba.red * 0xFFFF);
color.green = (short)(rgba.green * 0xFFFF);
color.blue = (short)(rgba.blue * 0xFFFF);
return color;
}
GdkColor getBgColor () {
if (OS.GTK3) {
return getContextBackground ();
}
long /*int*/ fontHandle = fontHandle ();
OS.gtk_widget_realize (fontHandle);
GdkColor color = new GdkColor ();
OS.gtk_style_get_bg (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
return color;
}
GdkColor getBaseColor () {
if (OS.GTK3) {
return getContextBackground ();
}
long /*int*/ fontHandle = fontHandle ();
OS.gtk_widget_realize (fontHandle);
GdkColor color = new GdkColor ();
OS.gtk_style_get_base (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
return color;
}
/**
* Returns the receiver's border width.
*
* @return the border width
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getBorderWidth () {
checkWidget();
return 0;
}
int getClientWidth () {
return 0;
}
/**
* Returns the receiver's cursor, or null if it has not been set.
* <p>
* When the mouse pointer passes over a control its appearance
* is changed to match the control's cursor.
* </p>
*
* @return the receiver's cursor or <code>null</code>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.3
*/
public Cursor getCursor () {
checkWidget ();
return cursor;
}
/**
* Returns <code>true</code> if the receiver is detecting
* drag gestures, and <code>false</code> otherwise.
*
* @return the receiver's drag detect state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.3
*/
public boolean getDragDetect () {
checkWidget ();
return (state & DRAG_DETECT) != 0;
}
/**
* Returns <code>true</code> if the receiver is enabled, and
* <code>false</code> otherwise. A disabled control is typically
* not selectable from the user interface and draws with an
* inactive or "grayed" look.
*
* @return the receiver's enabled state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #isEnabled
*/
public boolean getEnabled () {
checkWidget ();
return (state & DISABLED) == 0;
}
/**
* Returns the font that the receiver will use to paint textual information.
*
* @return the receiver's font
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Font getFont () {
checkWidget();
return font != null ? font : defaultFont ();
}
long /*int*/ getFontDescription () {
long /*int*/ fontHandle = fontHandle ();
if (OS.GTK3) {
long /*int*/ context = OS.gtk_widget_get_style_context (fontHandle);
return OS.gtk_style_context_get_font(context, OS.GTK_STATE_FLAG_NORMAL);
}
OS.gtk_widget_realize (fontHandle);
return OS.gtk_style_get_font_desc (OS.gtk_widget_get_style (fontHandle));
}
/**
* Returns the foreground color that the receiver will use to draw.
*
* @return the receiver's foreground color
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Color getForeground () {
checkWidget();
return Color.gtk_new (display, getForegroundColor ());
}
GdkColor getForegroundColor () {
return getFgColor ();
}
GdkColor getFgColor () {
if (OS.GTK3) {
return getContextColor ();
}
long /*int*/ fontHandle = fontHandle ();
OS.gtk_widget_realize (fontHandle);
GdkColor color = new GdkColor ();
OS.gtk_style_get_fg (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
return color;
}
Point getIMCaretPos () {
return new Point (0, 0);
}
GdkColor getTextColor () {
if (OS.GTK3) {
return getContextColor ();
}
long /*int*/ fontHandle = fontHandle ();
OS.gtk_widget_realize (fontHandle);
GdkColor color = new GdkColor ();
OS.gtk_style_get_text (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
return color;
}
/**
* Returns layout data which is associated with the receiver.
*
* @return the receiver's layout data
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Object getLayoutData () {
checkWidget();
return layoutData;
}
/**
* Returns the receiver's pop up menu if it has one, or null
* if it does not. All controls may optionally have a pop up
* menu that is displayed when the user requests one for
* the control. The sequence of key strokes, button presses
* and/or button releases that are used to request a pop up
* menu is platform specific.
*
* @return the receiver's menu
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Menu getMenu () {
checkWidget();
return menu;
}
/**
* Returns the receiver's monitor.
*
* @return the receiver's monitor
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.0
*/
public Monitor getMonitor () {
checkWidget();
Monitor monitor = null;
long /*int*/ screen = OS.gdk_screen_get_default ();
if (screen != 0) {
int monitorNumber = OS.gdk_screen_get_monitor_at_window (screen, paintWindow ());
GdkRectangle dest = new GdkRectangle ();
OS.gdk_screen_get_monitor_geometry (screen, monitorNumber, dest);
monitor = new Monitor ();
monitor.handle = monitorNumber;
monitor.x = dest.x;
monitor.y = dest.y;
monitor.width = dest.width;
monitor.height = dest.height;
Rectangle workArea = null;
if (monitorNumber == 0) workArea = display.getWorkArea ();
if (workArea != null) {
monitor.clientX = workArea.x;
monitor.clientY = workArea.y;
monitor.clientWidth = workArea.width;
monitor.clientHeight = workArea.height;
} else {
monitor.clientX = monitor.x;
monitor.clientY = monitor.y;
monitor.clientWidth = monitor.width;
monitor.clientHeight = monitor.height;
}
} else {
monitor = display.getPrimaryMonitor ();
}
return monitor;
}
/**
* Returns the receiver's parent, which must be a <code>Composite</code>
* or null when the receiver is a shell that was created with null or
* a display for a parent.
*
* @return the receiver's parent
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public Composite getParent () {
checkWidget();
return parent;
}
Control [] getPath () {
int count = 0;
Shell shell = getShell ();
Control control = this;
while (control != shell) {
count++;
control = control.parent;
}
control = this;
Control [] result = new Control [count];
while (control != shell) {
result [--count] = control;
control = control.parent;
}
return result;
}
/**
* Returns the region that defines the shape of the control,
* or null if the control has the default shape.
*
* @return the region that defines the shape of the shell (or null)
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.4
*/
public Region getRegion () {
checkWidget ();
return region;
}
/**
* Returns the receiver's shell. For all controls other than
* shells, this simply returns the control's nearest ancestor
* shell. Shells return themselves, even if they are children
* of other shells.
*
* @return the receiver's shell
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #getParent
*/
public Shell getShell() {
checkWidget();
return _getShell();
}
Shell _getShell() {
return parent._getShell();
}
/**
* Returns the receiver's tool tip text, or null if it has
* not been set.
*
* @return the receiver's tool tip text
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public String getToolTipText () {
checkWidget();
return toolTipText;
}
/**
* Returns <code>true</code> if this control is set to send touch events, or
* <code>false</code> if it is set to send gesture events instead. This method
* also returns <code>false</code> if a touch-based input device is not detected
* (this can be determined with <code>Display#getTouchEnabled()</code>). Use
* {@link #setTouchEnabled(boolean)} to switch the events that a control sends
* between touch events and gesture events.
*
* @return <code>true</code> if the control is set to send touch events, or <code>false</code> otherwise
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #setTouchEnabled
* @see Display#getTouchEnabled
*
* @since 3.7
*/
public boolean getTouchEnabled() {
checkWidget();
return false;
}
/**
* Returns <code>true</code> if the receiver is visible, and
* <code>false</code> otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some
* other condition makes the receiver not visible, this method
* may still indicate that it is considered visible even though
* it may not actually be showing.
* </p>
*
* @return the receiver's visibility state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public boolean getVisible () {
checkWidget();
return (state & HIDDEN) == 0;
}
Point getThickness (long /*int*/ widget) {
if (OS.GTK3) {
int xthickness = 0, ythickness = 0;
GtkBorder tmp = new GtkBorder();
long /*int*/ context = OS.gtk_widget_get_style_context (widget);
OS.gtk_style_context_save (context);
OS.gtk_style_context_add_class (context, OS.GTK_STYLE_CLASS_FRAME);
OS.gtk_style_context_get_padding (context, OS.GTK_STATE_FLAG_NORMAL, tmp);
xthickness += tmp.left;
ythickness += tmp.top;
OS.gtk_style_context_get_border (context, OS.GTK_STATE_FLAG_NORMAL, tmp);
xthickness += tmp.left;
ythickness += tmp.top;
OS.gtk_style_context_restore (context);
return new Point (xthickness, ythickness);
}
long /*int*/ style = OS.gtk_widget_get_style (widget);
return new Point (OS.gtk_style_get_xthickness (style), OS.gtk_style_get_ythickness (style));
}
long /*int*/ gtk_button_press_event (long /*int*/ widget, long /*int*/ event) {
return gtk_button_press_event (widget, event, true);
}
long /*int*/ gtk_button_press_event (long /*int*/ widget, long /*int*/ event, boolean sendMouseDown) {
GdkEventButton gdkEvent = new GdkEventButton ();
OS.memmove (gdkEvent, event, GdkEventButton.sizeof);
if (gdkEvent.type == OS.GDK_3BUTTON_PRESS) return 0;
/*
* When a shell is created with SWT.ON_TOP and SWT.NO_FOCUS,
* do not activate the shell when the user clicks on the
* the client area or on the border or a control within the
* shell that does not take focus.
*/
Shell shell = _getShell ();
if (((shell.style & SWT.ON_TOP) != 0) && (((shell.style & SWT.NO_FOCUS) == 0) || ((style & SWT.NO_FOCUS) == 0))) {
shell.forceActive();
}
long /*int*/ result = 0;
if (gdkEvent.type == OS.GDK_BUTTON_PRESS) {
display.clickCount = 1;
long /*int*/ nextEvent = OS.gdk_event_peek ();
if (nextEvent != 0) {
int eventType = OS.GDK_EVENT_TYPE (nextEvent);
if (eventType == OS.GDK_2BUTTON_PRESS) display.clickCount = 2;
if (eventType == OS.GDK_3BUTTON_PRESS) display.clickCount = 3;
OS.gdk_event_free (nextEvent);
}
boolean dragging = false;
if ((state & DRAG_DETECT) != 0 && hooks (SWT.DragDetect)) {
if (gdkEvent.button == 1) {
boolean [] consume = new boolean [1];
if (dragDetect ((int) gdkEvent.x, (int) gdkEvent.y, true, true, consume)) {
dragging = true;
if (consume [0]) result = 1;
}
if (isDisposed ()) return 1;
}
}
if (sendMouseDown && !sendMouseEvent (SWT.MouseDown, gdkEvent.button, display.clickCount, 0, false, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state)) {
result = 1;
}
if (isDisposed ()) return 1;
if (dragging) {
sendDragEvent (gdkEvent.button, gdkEvent.state, (int) gdkEvent.x, (int) gdkEvent.y, false);
if (isDisposed ()) return 1;
}
/*
* Pop up the context menu in the button press event for widgets
* that have default operating system menus in order to stop the
* operating system from displaying the menu if necessary.
*/
if ((state & MENU) != 0) {
if (gdkEvent.button == 3) {
if (showMenu ((int)gdkEvent.x_root, (int)gdkEvent.y_root)) {
result = 1;
}
}
}
} else {
display.clickCount = 2;
result = sendMouseEvent (SWT.MouseDoubleClick, gdkEvent.button, display.clickCount, 0, false, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
if (isDisposed ()) return 1;
}
if (!shell.isDisposed ()) shell.setActiveControl (this);
return result;
}
long /*int*/ gtk_button_release_event (long /*int*/ widget, long /*int*/ event) {
GdkEventButton gdkEvent = new GdkEventButton ();
OS.memmove (gdkEvent, event, GdkEventButton.sizeof);
return sendMouseEvent (SWT.MouseUp, gdkEvent.button, display.clickCount, 0, false, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
}
long /*int*/ gtk_commit (long /*int*/ imcontext, long /*int*/ text) {
if (text == 0) return 0;
int length = OS.strlen (text);
if (length == 0) return 0;
byte [] buffer = new byte [length];
OS.memmove (buffer, text, length);
char [] chars = Converter.mbcsToWcs (null, buffer);
sendIMKeyEvent (SWT.KeyDown, null, chars);
return 0;
}
long /*int*/ gtk_enter_notify_event (long /*int*/ widget, long /*int*/ event) {
if (OS.GTK_VERSION >= OS.VERSION (2, 12, 0)) {
/*
* Feature in GTK. Children of a shell will inherit and display the shell's
* tooltip if they do not have a tooltip of their own. The fix is to use the
* new tooltip API in GTK 2.12 to null the shell's tooltip when the control
* being entered does not have any tooltip text set.
*/
byte [] buffer = null;
if (toolTipText != null && toolTipText.length() != 0) {
char [] chars = fixMnemonic (toolTipText, false);
buffer = Converter.wcsToMbcs (null, chars, true);
}
long /*int*/ toolHandle = getShell().handle;
OS.gtk_widget_set_tooltip_text (toolHandle, buffer);
}
if (display.currentControl == this) return 0;
GdkEventCrossing gdkEvent = new GdkEventCrossing ();
OS.memmove (gdkEvent, event, GdkEventCrossing.sizeof);
/*
* It is possible to send out too many enter/exit events if entering a
* control through a subwindow. The fix is to return without sending any
* events if the GdkEventCrossing subwindow field is set and the control
* requests to check the field.
*/
if (gdkEvent.subwindow != 0 && checkSubwindow ()) return 0;
if (gdkEvent.mode != OS.GDK_CROSSING_NORMAL && gdkEvent.mode != OS.GDK_CROSSING_UNGRAB) return 0;
if ((gdkEvent.state & (OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK)) != 0) return 0;
if (display.currentControl != null && !display.currentControl.isDisposed ()) {
display.removeMouseHoverTimeout (display.currentControl.handle);
display.currentControl.sendMouseEvent (SWT.MouseExit, 0, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state);
}
if (!isDisposed ()) {
display.currentControl = this;
return sendMouseEvent (SWT.MouseEnter, 0, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
}
return 0;
}
boolean checkSubwindow () {
return false;
}
long /*int*/ gtk_event_after (long /*int*/ widget, long /*int*/ gdkEvent) {
GdkEvent event = new GdkEvent ();
OS.memmove (event, gdkEvent, GdkEvent.sizeof);
switch (event.type) {
case OS.GDK_BUTTON_PRESS: {
if (widget != eventHandle ()) break;
/*
* Pop up the context menu in the event_after signal to allow
* the widget to process the button press. This allows widgets
* such as GtkTreeView to select items before a menu is shown.
*/
if ((state & MENU) == 0) {
GdkEventButton gdkEventButton = new GdkEventButton ();
OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
if (gdkEventButton.button == 3) {
showMenu ((int) gdkEventButton.x_root, (int) gdkEventButton.y_root);
}
}
break;
}
case OS.GDK_FOCUS_CHANGE: {
if (!isFocusHandle (widget)) break;
GdkEventFocus gdkEventFocus = new GdkEventFocus ();
OS.memmove (gdkEventFocus, gdkEvent, GdkEventFocus.sizeof);
/*
* Feature in GTK. The GTK combo box popup under some window managers
* is implemented as a GTK_MENU. When it pops up, it causes the combo
* box to lose focus when focus is received for the menu. The
* fix is to check the current grab handle and see if it is a GTK_MENU
* and ignore the focus event when the menu is both shown and hidden.
*
* NOTE: This code runs for all menus.
*/
Display display = this.display;
if (gdkEventFocus.in != 0) {
if (display.ignoreFocus) {
display.ignoreFocus = false;
break;
}
} else {
display.ignoreFocus = false;
long /*int*/ grabHandle = OS.gtk_grab_get_current ();
if (grabHandle != 0) {
if (OS.G_OBJECT_TYPE (grabHandle) == OS.GTK_TYPE_MENU ()) {
display.ignoreFocus = true;
break;
}
}
}
sendFocusEvent (gdkEventFocus.in != 0 ? SWT.FocusIn : SWT.FocusOut);
break;
}
}
return 0;
}
long /*int*/ gtk_draw (long /*int*/ widget, long /*int*/ cairo) {
if ((state & OBSCURED) != 0) return 0;
if (!hooksPaint ()) return 0;
GdkRectangle rect = new GdkRectangle ();
OS.gdk_cairo_get_clip_rectangle (cairo, rect);
Event event = new Event ();
event.count = 1;
event.x = rect.x;
event.y = rect.y;
event.width = rect.width;
event.height = rect.height;
if ((style & SWT.MIRRORED) != 0) event.x = getClientWidth () - event.width - event.x;
GCData data = new GCData ();
// data.damageRgn = gdkEvent.region;
data.cairo = cairo;
GC gc = event.gc = GC.gtk_new (this, data);
drawWidget (gc);
sendEvent (SWT.Paint, event);
gc.dispose ();
event.gc = null;
return 0;
}
long /*int*/ gtk_expose_event (long /*int*/ widget, long /*int*/ eventPtr) {
if ((state & OBSCURED) != 0) return 0;
if (!hooksPaint ()) return 0;
GdkEventExpose gdkEvent = new GdkEventExpose ();
OS.memmove(gdkEvent, eventPtr, GdkEventExpose.sizeof);
Event event = new Event ();
event.count = gdkEvent.count;
event.x = gdkEvent.area_x;
event.y = gdkEvent.area_y;
event.width = gdkEvent.area_width;
event.height = gdkEvent.area_height;
if ((style & SWT.MIRRORED) != 0) event.x = getClientWidth () - event.width - event.x;
GCData data = new GCData ();
data.damageRgn = gdkEvent.region;
GC gc = event.gc = GC.gtk_new (this, data);
drawWidget (gc);
sendEvent (SWT.Paint, event);
gc.dispose ();
event.gc = null;
return 0;
}
long /*int*/ gtk_focus (long /*int*/ widget, long /*int*/ directionType) {
/* Stop GTK traversal for every widget */
return 1;
}
long /*int*/ gtk_focus_in_event (long /*int*/ widget, long /*int*/ event) {
// widget could be disposed at this point
if (handle != 0) {
Control oldControl = display.imControl;
if (oldControl != this) {
if (oldControl != null && !oldControl.isDisposed ()) {
long /*int*/ oldIMHandle = oldControl.imHandle ();
if (oldIMHandle != 0) OS.gtk_im_context_reset (oldIMHandle);
}
}
if (hooks (SWT.KeyDown) || hooks (SWT.KeyUp)) {
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) OS.gtk_im_context_focus_in (imHandle);
}
}
return 0;
}
long /*int*/ gtk_focus_out_event (long /*int*/ widget, long /*int*/ event) {
// widget could be disposed at this point
if (handle != 0) {
if (hooks (SWT.KeyDown) || hooks (SWT.KeyUp)) {
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) {
OS.gtk_im_context_focus_out (imHandle);
}
}
}
return 0;
}
long /*int*/ gtk_key_press_event (long /*int*/ widget, long /*int*/ event) {
if (!hasFocus ()) {
/*
* Feature in GTK. On AIX, the IME window deactivates the current shell and even
* though the widget receiving the key event is not in focus, it should filter the input in
* order to get it committed. The fix is to detect that the widget shell is not active
* and call filterKey() only.
*/
if (display.getActiveShell () == null) {
GdkEventKey gdkEvent = new GdkEventKey ();
OS.memmove (gdkEvent, event, GdkEventKey.sizeof);
if (filterKey (gdkEvent.keyval, event)) return 1;
}
return 0;
}
GdkEventKey gdkEvent = new GdkEventKey ();
OS.memmove (gdkEvent, event, GdkEventKey.sizeof);
if (translateMnemonic (gdkEvent.keyval, gdkEvent)) return 1;
// widget could be disposed at this point
if (isDisposed ()) return 0;
if (filterKey (gdkEvent.keyval, event)) return 1;
// widget could be disposed at this point
if (isDisposed ()) return 0;
if (translateTraversal (gdkEvent)) return 1;
// widget could be disposed at this point
if (isDisposed ()) return 0;
return super.gtk_key_press_event (widget, event);
}
long /*int*/ gtk_key_release_event (long /*int*/ widget, long /*int*/ event) {
if (!hasFocus ()) return 0;
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) {
if (OS.gtk_im_context_filter_keypress (imHandle, event)) return 1;
}
return super.gtk_key_release_event (widget, event);
}
long /*int*/ gtk_leave_notify_event (long /*int*/ widget, long /*int*/ event) {
if (display.currentControl != this) return 0;
display.removeMouseHoverTimeout (handle);
int result = 0;
if (sendLeaveNotify () || display.getCursorControl () == null) {
GdkEventCrossing gdkEvent = new GdkEventCrossing ();
OS.memmove (gdkEvent, event, GdkEventCrossing.sizeof);
if (gdkEvent.mode != OS.GDK_CROSSING_NORMAL && gdkEvent.mode != OS.GDK_CROSSING_UNGRAB) return 0;
if ((gdkEvent.state & (OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK)) != 0) return 0;
result = sendMouseEvent (SWT.MouseExit, 0, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
display.currentControl = null;
}
return result;
}
long /*int*/ gtk_mnemonic_activate (long /*int*/ widget, long /*int*/ arg1) {
int result = 0;
long /*int*/ eventPtr = OS.gtk_get_current_event ();
if (eventPtr != 0) {
GdkEventKey keyEvent = new GdkEventKey ();
OS.memmove (keyEvent, eventPtr, GdkEventKey.sizeof);
if (keyEvent.type == OS.GDK_KEY_PRESS) {
Control focusControl = display.getFocusControl ();
long /*int*/ focusHandle = focusControl != null ? focusControl.focusHandle () : 0;
if (focusHandle != 0) {
display.mnemonicControl = this;
OS.gtk_widget_event (focusHandle, eventPtr);
display.mnemonicControl = null;
}
result = 1;
}
OS.gdk_event_free (eventPtr);
}
return result;
}
long /*int*/ gtk_motion_notify_event (long /*int*/ widget, long /*int*/ event) {
GdkEventMotion gdkEvent = new GdkEventMotion ();
OS.memmove (gdkEvent, event, GdkEventMotion.sizeof);
if (this == display.currentControl && (hooks (SWT.MouseHover) || filters (SWT.MouseHover))) {
display.addMouseHoverTimeout (handle);
}
double x = gdkEvent.x_root, y = gdkEvent.y_root;
int state = gdkEvent.state;
if (gdkEvent.is_hint != 0) {
int [] pointer_x = new int [1], pointer_y = new int [1], mask = new int [1];
long /*int*/ window = eventWindow ();
gdk_window_get_device_position (window, pointer_x, pointer_y, mask);
x = pointer_x [0];
y = pointer_y [0];
state = mask [0];
}
if (OS.GTK3 && this != display.currentControl) {
if (display.currentControl != null && !display.currentControl.isDisposed ()) {
display.removeMouseHoverTimeout (display.currentControl.handle);
display.currentControl.sendMouseEvent (SWT.MouseExit, 0, gdkEvent.time, x, y, false, state);
}
if (!isDisposed ()) {
display.currentControl = this;
sendMouseEvent (SWT.MouseEnter, 0, gdkEvent.time, x, y, false, state);
}
}
int result = sendMouseEvent (SWT.MouseMove, 0, gdkEvent.time, x, y, gdkEvent.is_hint != 0, state) ? 0 : 1;
return result;
}
long /*int*/ gtk_popup_menu (long /*int*/ widget) {
if (!hasFocus()) return 0;
int [] x = new int [1], y = new int [1];
gdk_window_get_device_position (0, x, y, null);
return showMenu (x [0], y [0], SWT.MENU_KEYBOARD) ? 1 : 0;
}
long /*int*/ gtk_preedit_changed (long /*int*/ imcontext) {
display.showIMWindow (this);
return 0;
}
long /*int*/ gtk_realize (long /*int*/ widget) {
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) {
long /*int*/ window = gtk_widget_get_window (paintHandle ());
OS.gtk_im_context_set_client_window (imHandle, window);
}
if (backgroundImage != null) {
setBackgroundPixmap (backgroundImage);
}
return 0;
}
long /*int*/ gtk_scroll_event (long /*int*/ widget, long /*int*/ eventPtr) {
GdkEventScroll gdkEvent = new GdkEventScroll ();
OS.memmove (gdkEvent, eventPtr, GdkEventScroll.sizeof);
switch (gdkEvent.direction) {
case OS.GDK_SCROLL_UP:
return sendMouseEvent (SWT.MouseWheel, 0, 3, SWT.SCROLL_LINE, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
case OS.GDK_SCROLL_DOWN:
return sendMouseEvent (SWT.MouseWheel, 0, -3, SWT.SCROLL_LINE, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
case OS.GDK_SCROLL_LEFT:
return sendMouseEvent (SWT.MouseHorizontalWheel, 0, 3, 0, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
case OS.GDK_SCROLL_RIGHT:
return sendMouseEvent (SWT.MouseHorizontalWheel, 0, -3, 0, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
case OS.GDK_SCROLL_SMOOTH:
long /*int*/ result = 0;
double[] delta_x = new double[1], delta_y = new double [1];
if (OS.gdk_event_get_scroll_deltas (eventPtr, delta_x, delta_y)) {
if (delta_x [0] != 0) {
result = (sendMouseEvent (SWT.MouseHorizontalWheel, 0, (int)(3 * delta_x [0]), 0, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1);
}
if (delta_y [0] != 0) {
result = (sendMouseEvent (SWT.MouseWheel, 0, (int)(3 * delta_y [0]), SWT.SCROLL_LINE, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1);
}
}
return result;
}
return 0;
}
long /*int*/ gtk_show_help (long /*int*/ widget, long /*int*/ helpType) {
if (!hasFocus ()) return 0;
return sendHelpEvent (helpType) ? 1 : 0;
}
long /*int*/ gtk_style_set (long /*int*/ widget, long /*int*/ previousStyle) {
if (backgroundImage != null) {
setBackgroundPixmap (backgroundImage);
}
return 0;
}
long /*int*/ gtk_unrealize (long /*int*/ widget) {
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) OS.gtk_im_context_set_client_window (imHandle, 0);
return 0;
}
long /*int*/ gtk_visibility_notify_event (long /*int*/ widget, long /*int*/ event) {
/*
* As of GTK 2.17.11, obscured controls no longer send expose
* events. It is no longer necessary to track visiblity notify
* events.
*/
if (OS.GTK_VERSION >= OS.VERSION (2, 17, 11)) return 0;
GdkEventVisibility gdkEvent = new GdkEventVisibility ();
OS.memmove (gdkEvent, event, GdkEventVisibility.sizeof);
long /*int*/ paintWindow = paintWindow();
long /*int*/ window = gdkEvent.window;
if (window == paintWindow) {
if (gdkEvent.state == OS.GDK_VISIBILITY_FULLY_OBSCURED) {
state |= OBSCURED;
} else {
if ((state & OBSCURED) != 0) {
int [] width = new int [1], height = new int [1];
gdk_window_get_size (window, width, height);
GdkRectangle rect = new GdkRectangle ();
rect.width = width [0];
rect.height = height [0];
OS.gdk_window_invalidate_rect (window, rect, false);
}
state &= ~OBSCURED;
}
}
return 0;
}
void gtk_widget_set_has_window (long /*int*/ fixedHandle, boolean value) {
if (OS.GTK_VERSION >= OS.VERSION (2, 18, 0)) {
OS.gtk_widget_set_has_window (fixedHandle, value);
} else {
OS.gtk_fixed_set_has_window (fixedHandle, value);
}
}
void gtk_widget_size_request (long /*int*/ widget, GtkRequisition requisition) {
gtk_widget_get_preferred_size (widget, requisition);
}
/**
* Invokes platform specific functionality to allocate a new GC handle.
* <p>
* <b>IMPORTANT:</b> This method is <em>not</em> part of the public
* API for <code>Control</code>. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
* </p>
*
* @param data the platform specific GC data
* @return the platform specific GC handle
*
* @noreference This method is not intended to be referenced by clients.
*/
public long /*int*/ internal_new_GC (GCData data) {
checkWidget ();
long /*int*/ window = paintWindow ();
if (window == 0) error (SWT.ERROR_NO_HANDLES);
long /*int*/ gc = data.cairo;
if (gc != 0) {
Cairo.cairo_reference (gc);
} else {
if (OS.USE_CAIRO) {
gc = OS.gdk_cairo_create (window);
} else {
gc = OS.gdk_gc_new (window);
}
}
if (gc == 0) error (SWT.ERROR_NO_HANDLES);
if (data != null) {
int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT;
if ((data.style & mask) == 0) {
data.style |= style & (mask | SWT.MIRRORED);
} else {
if ((data.style & SWT.RIGHT_TO_LEFT) != 0) {
data.style |= SWT.MIRRORED;
}
}
data.drawable = window;
data.device = display;
data.foreground = getForegroundColor ();
Control control = findBackgroundControl ();
if (control == null) control = this;
data.background = control.getBackgroundColor ();
data.font = font != null ? font : defaultFont ();
}
return gc;
}
long /*int*/ imHandle () {
return 0;
}
/**
* Invokes platform specific functionality to dispose a GC handle.
* <p>
* <b>IMPORTANT:</b> This method is <em>not</em> part of the public
* API for <code>Control</code>. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
* </p>
*
* @param hDC the platform specific GC handle
* @param data the platform specific GC data
*
* @noreference This method is not intended to be referenced by clients.
*/
public void internal_dispose_GC (long /*int*/ hDC, GCData data) {
checkWidget ();
long /*int*/ gc = hDC;
if (OS.USE_CAIRO) {
Cairo.cairo_destroy (gc);
} else {
OS.g_object_unref (gc);
}
}
/**
* Returns <code>true</code> if the underlying operating
* system supports this reparenting, otherwise <code>false</code>
*
* @return <code>true</code> if the widget can be reparented, otherwise <code>false</code>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public boolean isReparentable () {
checkWidget();
return true;
}
boolean isShowing () {
/*
* This is not complete. Need to check if the
* widget is obscurred by a parent or sibling.
*/
if (!isVisible ()) return false;
Control control = this;
while (control != null) {
Point size = control.getSize ();
if (size.x == 0 || size.y == 0) {
return false;
}
control = control.parent;
}
return true;
}
boolean isTabGroup () {
Control [] tabList = parent._getTabList ();
if (tabList != null) {
for (int i=0; i<tabList.length; i++) {
if (tabList [i] == this) return true;
}
}
int code = traversalCode (0, null);
if ((code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) != 0) return false;
return (code & (SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_TAB_NEXT)) != 0;
}
boolean isTabItem () {
Control [] tabList = parent._getTabList ();
if (tabList != null) {
for (int i=0; i<tabList.length; i++) {
if (tabList [i] == this) return false;
}
}
int code = traversalCode (0, null);
return (code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) != 0;
}
/**
* Returns <code>true</code> if the receiver is enabled and all
* ancestors up to and including the receiver's nearest ancestor
* shell are enabled. Otherwise, <code>false</code> is returned.
* A disabled control is typically not selectable from the user
* interface and draws with an inactive or "grayed" look.
*
* @return the receiver's enabled state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #getEnabled
*/
public boolean isEnabled () {
checkWidget ();
return getEnabled () && parent.isEnabled ();
}
boolean isFocusAncestor (Control control) {
while (control != null && control != this && !(control instanceof Shell)) {
control = control.parent;
}
return control == this;
}
/**
* Returns <code>true</code> if the receiver has the user-interface
* focus, and <code>false</code> otherwise.
*
* @return the receiver's focus state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public boolean isFocusControl () {
checkWidget();
Control focusControl = display.focusControl;
if (focusControl != null && !focusControl.isDisposed ()) {
return this == focusControl;
}
return hasFocus ();
}
/**
* Returns <code>true</code> if the receiver is visible and all
* ancestors up to and including the receiver's nearest ancestor
* shell are visible. Otherwise, <code>false</code> is returned.
*
* @return the receiver's visibility state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #getVisible
*/
public boolean isVisible () {
checkWidget();
return getVisible () && parent.isVisible ();
}
Decorations menuShell () {
return parent.menuShell ();
}
boolean mnemonicHit (char key) {
return false;
}
boolean mnemonicMatch (char key) {
return false;
}
void register () {
super.register ();
if (fixedHandle != 0) display.addWidget (fixedHandle, this);
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) display.addWidget (imHandle, this);
}
/**
* Causes the entire bounds of the receiver to be marked
* as needing to be redrawn. The next time a paint request
* is processed, the control will be completely painted,
* including the background.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #update()
* @see PaintListener
* @see SWT#Paint
* @see SWT#NO_BACKGROUND
* @see SWT#NO_REDRAW_RESIZE
* @see SWT#NO_MERGE_PAINTS
* @see SWT#DOUBLE_BUFFERED
*/
public void redraw () {
checkWidget();
redraw (false);
}
void redraw (boolean all) {
// checkWidget();
if (!gtk_widget_get_visible (topHandle ())) return;
redrawWidget (0, 0, 0, 0, true, all, false);
}
/**
* Causes the rectangular area of the receiver specified by
* the arguments to be marked as needing to be redrawn.
* The next time a paint request is processed, that area of
* the receiver will be painted, including the background.
* If the <code>all</code> flag is <code>true</code>, any
* children of the receiver which intersect with the specified
* area will also paint their intersecting areas. If the
* <code>all</code> flag is <code>false</code>, the children
* will not be painted.
*
* @param x the x coordinate of the area to draw
* @param y the y coordinate of the area to draw
* @param width the width of the area to draw
* @param height the height of the area to draw
* @param all <code>true</code> if children should redraw, and <code>false</code> otherwise
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #update()
* @see PaintListener
* @see SWT#Paint
* @see SWT#NO_BACKGROUND
* @see SWT#NO_REDRAW_RESIZE
* @see SWT#NO_MERGE_PAINTS
* @see SWT#DOUBLE_BUFFERED
*/
public void redraw (int x, int y, int width, int height, boolean all) {
checkWidget();
if (!gtk_widget_get_visible (topHandle ())) return;
if ((style & SWT.MIRRORED) != 0) x = getClientWidth () - width - x;
redrawWidget (x, y, width, height, false, all, false);
}
void redrawChildren () {
}
void redrawWidget (int x, int y, int width, int height, boolean redrawAll, boolean all, boolean trim) {
if (!gtk_widget_get_realized(handle)) return;
long /*int*/ window = paintWindow ();
GdkRectangle rect = new GdkRectangle ();
if (redrawAll) {
int [] w = new int [1], h = new int [1];
gdk_window_get_size (window, w, h);
rect.width = w [0];
rect.height = h [0];
} else {
rect.x = x;
rect.y = y;
rect.width = width;
rect.height = height;
}
OS.gdk_window_invalidate_rect (window, rect, all);
}
void release (boolean destroy) {
Control next = null, previous = null;
if (destroy && parent != null) {
Control[] children = parent._getChildren ();
int index = 0;
while (index < children.length) {
if (children [index] == this) break;
index++;
}
if (index > 0) {
previous = children [index - 1];
}
if (index + 1 < children.length) {
next = children [index + 1];
next.removeRelation ();
}
removeRelation ();
}
super.release (destroy);
if (destroy) {
if (previous != null && next != null) previous.addRelation (next);
}
}
void releaseHandle () {
super.releaseHandle ();
fixedHandle = 0;
parent = null;
}
void releaseParent () {
parent.removeControl (this);
}
void releaseWidget () {
super.releaseWidget ();
if (display.currentControl == this) display.currentControl = null;
display.removeMouseHoverTimeout (handle);
long /*int*/ imHandle = imHandle ();
if (imHandle != 0) {
OS.gtk_im_context_reset (imHandle);
OS.gtk_im_context_set_client_window (imHandle, 0);
}
if (enableWindow != 0) {
OS.gdk_window_set_user_data (enableWindow, 0);
OS.gdk_window_destroy (enableWindow);
enableWindow = 0;
}
redrawWindow = 0;
if (menu != null && !menu.isDisposed ()) {
menu.dispose ();
}
menu = null;
cursor = null;
toolTipText = null;
layoutData = null;
if (accessible != null) {
accessible.internal_dispose_Accessible ();
}
accessible = null;
region = null;
}
void restackWindow (long /*int*/ window, long /*int*/ sibling, boolean above) {
if (OS.GTK_VERSION >= OS.VERSION (2, 17, 11)) {
OS.gdk_window_restack (window, sibling, above);
} else {
/*
* Feature in X. If the receiver is a top level, XConfigureWindow ()
* will fail (with a BadMatch error) for top level shells because top
* level shells are reparented by the window manager and do not share
* the same X window parent. This is the correct behavior but it is
* unexpected. The fix is to use XReconfigureWMWindow () instead.
* When the receiver is not a top level shell, XReconfigureWMWindow ()
* behaves the same as XConfigureWindow ().
*/
long /*int*/ xDisplay = OS.gdk_x11_drawable_get_xdisplay (window);
long /*int*/ xWindow = OS.gdk_x11_drawable_get_xid (window);
int xScreen = OS.XDefaultScreen (xDisplay);
int flags = OS.CWStackMode | OS.CWSibling;
XWindowChanges changes = new XWindowChanges ();
changes.sibling = OS.gdk_x11_drawable_get_xid (sibling);
changes.stack_mode = above ? OS.Above : OS.Below;
OS.XReconfigureWMWindow (xDisplay, xWindow, xScreen, flags, changes);
}
}
boolean sendDragEvent (int button, int stateMask, int x, int y, boolean isStateMask) {
Event event = new Event ();
event.button = button;
event.x = x;
event.y = y;
if ((style & SWT.MIRRORED) != 0) event.x = getClientWidth () - event.x;
if (isStateMask) {
event.stateMask = stateMask;
} else {
setInputState (event, stateMask);
}
postEvent (SWT.DragDetect, event);
if (isDisposed ()) return false;
return event.doit;
}
void sendFocusEvent (int type) {
Shell shell = _getShell ();
Display display = this.display;
display.focusControl = this;
display.focusEvent = type;
sendEvent (type);
display.focusControl = null;
display.focusEvent = SWT.None;
/*
* It is possible that the shell may be
* disposed at this point. If this happens
* don't send the activate and deactivate
* events.
*/
if (!shell.isDisposed ()) {
switch (type) {
case SWT.FocusIn:
shell.setActiveControl (this);
break;
case SWT.FocusOut:
if (shell != display.activeShell) {
shell.setActiveControl (null);
}
break;
}
}
}
boolean sendHelpEvent (long /*int*/ helpType) {
Control control = this;
while (control != null) {
if (control.hooks (SWT.Help)) {
control.postEvent (SWT.Help);
return true;
}
control = control.parent;
}
return false;
}
boolean sendLeaveNotify() {
return false;
}
boolean sendMouseEvent (int type, int button, int time, double x, double y, boolean is_hint, int state) {
return sendMouseEvent (type, button, 0, 0, false, time, x, y, is_hint, state);
}
boolean sendMouseEvent (int type, int button, int count, int detail, boolean send, int time, double x, double y, boolean is_hint, int state) {
if (!hooks (type) && !filters (type)) return true;
Event event = new Event ();
event.time = time;
event.button = button;
event.detail = detail;
event.count = count;
if (is_hint) {
event.x = (int)x;
event.y = (int)y;
} else {
long /*int*/ window = eventWindow ();
int [] origin_x = new int [1], origin_y = new int [1];
OS.gdk_window_get_origin (window, origin_x, origin_y);
event.x = (int)x - origin_x [0];
event.y = (int)y - origin_y [0];
}
if ((style & SWT.MIRRORED) != 0) event.x = getClientWidth () - event.x;
setInputState (event, state);
if (send) {
sendEvent (type, event);
if (isDisposed ()) return false;
} else {
postEvent (type, event);
}
return event.doit;
}
void setBackground () {
if ((state & BACKGROUND) == 0 && backgroundImage == null) {
if ((state & PARENT_BACKGROUND) != 0) {
setParentBackground ();
} else {
setWidgetBackground ();
}
redrawWidget (0, 0, 0, 0, true, false, false);
}
}
/**
* Sets the receiver's background color to the color specified
* by the argument, or to the default system color for the control
* if the argument is null.
* <p>
* Note: This operation is a hint and may be overridden by the platform.
* For example, on Windows the background of a Button cannot be changed.
* </p>
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setBackground (Color color) {
checkWidget();
if (((state & BACKGROUND) == 0) && color == null) return;
GdkColor gdkColor = null;
if (color != null) {
if (color.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
gdkColor = color.handle;
}
boolean set = false;
if (OS.GTK3) {
set = !getBackground().equals(color);
} else {
if (gdkColor == null) {
long /*int*/ style = OS.gtk_widget_get_modifier_style (handle);
set = (OS.gtk_rc_style_get_color_flags (style, OS.GTK_STATE_NORMAL) & OS.GTK_RC_BG) != 0;
} else {
GdkColor oldColor = getBackgroundColor ();
set = oldColor.pixel != gdkColor.pixel;
}
}
if (set) {
if (color == null) {
state &= ~BACKGROUND;
} else {
state |= BACKGROUND;
}
setBackgroundColor (gdkColor);
redrawChildren ();
}
}
void setBackgroundColor (long /*int*/ context, long /*int*/ handle, GdkRGBA rgba) {
OS.gtk_widget_override_background_color (handle, OS.GTK_STATE_FLAG_NORMAL, rgba);
}
void setBackgroundColorGradient (long /*int*/ context, long /*int*/ handle, GdkRGBA rgba) {
String css ="* {\n";
if (rgba != null) {
String color = "rgba(" + (int)(rgba.red * 255) + "," + (int)(rgba.green * 255) + "," + (int)(rgba.blue * 255) + "," + (int)(rgba.alpha * 255) + ")";
css += "background-image: -gtk-gradient (linear, 0 0, 0 1, color-stop(0, " + color + "), color-stop(1, " + color + "));\n";
}
css += "}\n";
if (provider == 0) {
provider = OS.gtk_css_provider_new ();
OS.gtk_style_context_add_provider (context, provider, OS.GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
OS.g_object_unref (provider);
}
OS.gtk_css_provider_load_from_data (provider, Converter.wcsToMbcs (null, css, true), -1, null);
}
void setBackgroundColor (long /*int*/ handle, GdkColor color) {
if (OS.GTK3) {
GdkRGBA rgba = null;
double alpha = 1;
if (color == null) {
if ((state & PARENT_BACKGROUND) != 0) {
alpha = 0;
Control control = findBackgroundControl();
if (control == null) control = this;
color = control.getBackgroundColor();
}
}
if (color != null) {
rgba = new GdkRGBA ();
rgba.alpha = alpha;
rgba.red = (color.red & 0xFFFF) / (float)0xFFFF;
rgba.green = (color.green & 0xFFFF) / (float)0xFFFF;
rgba.blue = (color.blue & 0xFFFF) / (float)0xFFFF;
}
long /*int*/ context = OS.gtk_widget_get_style_context (handle);
setBackgroundColor (context, handle, rgba);
OS.gtk_style_context_invalidate (context);
return;
}
int index = OS.GTK_STATE_NORMAL;
long /*int*/ style = OS.gtk_widget_get_modifier_style (handle);
long /*int*/ ptr = OS.gtk_rc_style_get_bg_pixmap_name (style, index);
if (ptr != 0) OS.g_free (ptr);
ptr = 0;
String pixmapName = null;
int flags = OS.gtk_rc_style_get_color_flags (style, index);
if (color != null) {
flags |= OS.GTK_RC_BG;
pixmapName = "<none>"; //$NON-NLS-1$
} else {
flags &= ~OS.GTK_RC_BG;
if (backgroundImage == null && (state & PARENT_BACKGROUND) != 0) {
pixmapName = "<parent>"; //$NON-NLS-1$
}
}
if (pixmapName != null) {
byte[] buffer = Converter.wcsToMbcs (null, pixmapName, true);
ptr = OS.g_malloc (buffer.length);
OS.memmove (ptr, buffer, buffer.length);
}
OS.gtk_rc_style_set_bg_pixmap_name (style, index, ptr);
OS.gtk_rc_style_set_bg (style, index, color);
OS.gtk_rc_style_set_color_flags (style, index, flags);
modifyStyle (handle, style);
}
void setBackgroundColor (GdkColor color) {
setBackgroundColor (handle, color);
}
/**
* Sets the receiver's background image to the image specified
* by the argument, or to the default system color for the control
* if the argument is null. The background image is tiled to fill
* the available space.
* <p>
* Note: This operation is a hint and may be overridden by the platform.
* For example, on Windows the background of a Button cannot be changed.
* </p>
* @param image the new image (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* <li>ERROR_INVALID_ARGUMENT - if the argument is not a bitmap</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.2
*/
public void setBackgroundImage (Image image) {
checkWidget ();
if (image != null && image.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
if (image == backgroundImage) return;
this.backgroundImage = image;
if (backgroundImage != null) {
setBackgroundPixmap (backgroundImage);
redrawWidget (0, 0, 0, 0, true, false, false);
} else {
setWidgetBackground ();
}
redrawChildren ();
}
void setBackgroundPixmap (Image image) {
long /*int*/ window = gtk_widget_get_window (paintHandle ());
if (window != 0) {
if (image.pixmap != 0) {
OS.gdk_window_set_back_pixmap (window, image.pixmap, false);
} else if (image.surface != 0) {
if (OS.GTK3) {
long /*int*/ pattern = Cairo.cairo_pattern_create_for_surface(image.surface);
if (pattern == 0) SWT.error(SWT.ERROR_NO_HANDLES);
Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_REPEAT);
OS.gdk_window_set_background_pattern(window, pattern);
Cairo.cairo_pattern_destroy(pattern);
}
/*
* TODO This code code is commented because it does not work since the pixmap
* created with gdk_pixmap_foreign_new() does not have colormap. Another option
* would be to create a pixmap on the fly from the surface.
*
* For now draw background in windowProc().
*/
// long /*int*/ surface = image.surface;
// int type = Cairo.cairo_surface_get_type(surface);
// switch (type) {
// case Cairo.CAIRO_SURFACE_TYPE_XLIB:
// long /*int*/ pixmap = OS.gdk_pixmap_foreign_new(Cairo.cairo_xlib_surface_get_drawable(surface));
// OS.gdk_window_set_back_pixmap (window, pixmap, false);
// OS.g_object_unref(pixmap);
// break;
// }
}
}
}
/**
* If the argument is <code>true</code>, causes the receiver to have
* all mouse events delivered to it until the method is called with
* <code>false</code> as the argument. Note that on some platforms,
* a mouse button must currently be down for capture to be assigned.
*
* @param capture <code>true</code> to capture the mouse, and <code>false</code> to release it
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setCapture (boolean capture) {
checkWidget();
/* FIXME !!!!! */
/*
if (capture) {
OS.gtk_widget_grab_focus (handle);
} else {
OS.gtk_widget_grab_default (handle);
}
*/
}
/**
* Sets the receiver's cursor to the cursor specified by the
* argument, or to the default cursor for that kind of control
* if the argument is null.
* <p>
* When the mouse pointer passes over a control its appearance
* is changed to match the control's cursor.
* </p>
*
* @param cursor the new cursor (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setCursor (Cursor cursor) {
checkWidget();
if (cursor != null && cursor.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
this.cursor = cursor;
setCursor (cursor != null ? cursor.handle : 0);
}
void setCursor (long /*int*/ cursor) {
long /*int*/ window = eventWindow ();
if (window != 0) {
OS.gdk_window_set_cursor (window, cursor);
if (!OS.GDK_WINDOWING_X11 ()) {
OS.gdk_flush ();
} else {
long /*int*/ xDisplay = OS.gdk_x11_display_get_xdisplay(OS.gdk_display_get_default());
OS.XFlush (xDisplay);
}
}
}
/**
* Sets the receiver's drag detect state. If the argument is
* <code>true</code>, the receiver will detect drag gestures,
* otherwise these gestures will be ignored.
*
* @param dragDetect the new drag detect state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.3
*/
public void setDragDetect (boolean dragDetect) {
checkWidget ();
if (dragDetect) {
state |= DRAG_DETECT;
} else {
state &= ~DRAG_DETECT;
}
}
/**
* Enables the receiver if the argument is <code>true</code>,
* and disables it otherwise. A disabled control is typically
* not selectable from the user interface and draws with an
* inactive or "grayed" look.
*
* @param enabled the new enabled state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setEnabled (boolean enabled) {
checkWidget();
if (((state & DISABLED) == 0) == enabled) return;
Control control = null;
boolean fixFocus = false;
if (!enabled) {
if (display.focusEvent != SWT.FocusOut) {
control = display.getFocusControl ();
fixFocus = isFocusAncestor (control);
}
}
if (enabled) {
state &= ~DISABLED;
} else {
state |= DISABLED;
}
enableWidget (enabled);
if (isDisposed ()) return;
if (enabled) {
if (enableWindow != 0) {
OS.gdk_window_set_user_data (enableWindow, 0);
OS.gdk_window_destroy (enableWindow);
enableWindow = 0;
}
} else {
OS.gtk_widget_realize (handle);
long /*int*/ parentHandle = parent.eventHandle ();
long /*int*/ window = parent.eventWindow ();
long /*int*/ topHandle = topHandle ();
GdkWindowAttr attributes = new GdkWindowAttr ();
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation (topHandle, allocation);
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
attributes.height = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
attributes.event_mask = (0xFFFFFFFF & ~OS.ExposureMask);
attributes.wclass = OS.GDK_INPUT_ONLY;
attributes.window_type = OS.GDK_WINDOW_CHILD;
enableWindow = OS.gdk_window_new (window, attributes, OS.GDK_WA_X | OS.GDK_WA_Y);
if (enableWindow != 0) {
OS.gdk_window_set_user_data (enableWindow, parentHandle);
if (!OS.GDK_WINDOWING_X11 ()) {
OS.gdk_window_raise (enableWindow);
} else {
restackWindow (enableWindow, gtk_widget_get_window (topHandle), true);
}
if (gtk_widget_get_visible (topHandle)) OS.gdk_window_show_unraised (enableWindow);
}
}
if (fixFocus) fixFocus (control);
}
/**
* Causes the receiver to have the <em>keyboard focus</em>,
* such that all keyboard events will be delivered to it. Focus
* reassignment will respect applicable platform constraints.
*
* @return <code>true</code> if the control got focus, and <code>false</code> if it was unable to.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #forceFocus
*/
public boolean setFocus () {
checkWidget();
if ((style & SWT.NO_FOCUS) != 0) return false;
return forceFocus ();
}
/**
* Sets the font that the receiver will use to paint textual information
* to the font specified by the argument, or to the default font for that
* kind of control if the argument is null.
*
* @param font the new font (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setFont (Font font) {
checkWidget();
if (((state & FONT) == 0) && font == null) return;
this.font = font;
long /*int*/ fontDesc;
if (font == null) {
fontDesc = defaultFont ().handle;
} else {
if (font.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
fontDesc = font.handle;
}
if (font == null) {
state &= ~FONT;
} else {
state |= FONT;
}
setFontDescription (fontDesc);
}
void setFontDescription (long /*int*/ font) {
setFontDescription (handle, font);
}
/**
* Sets the receiver's foreground color to the color specified
* by the argument, or to the default system color for the control
* if the argument is null.
* <p>
* Note: This operation is a hint and may be overridden by the platform.
* </p>
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setForeground (Color color) {
checkWidget();
if (((state & FOREGROUND) == 0) && color == null) return;
GdkColor gdkColor = null;
if (color != null) {
if (color.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
gdkColor = color.handle;
}
boolean set = false;
if (OS.GTK3) {
set = !getForeground().equals(color);
} else {
if (gdkColor == null) {
long /*int*/ style = OS.gtk_widget_get_modifier_style (handle);
set = (OS.gtk_rc_style_get_color_flags (style, OS.GTK_STATE_NORMAL) & OS.GTK_RC_FG) != 0;
} else {
GdkColor oldColor = getForegroundColor ();
set = oldColor.pixel != gdkColor.pixel;
}
}
if (set) {
if (color == null) {
state &= ~FOREGROUND;
} else {
state |= FOREGROUND;
}
setForegroundColor (gdkColor);
}
}
void setForegroundColor (GdkColor color) {
setForegroundColor (handle, color);
}
void setInitialBounds () {
if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) {
/*
* Feature in GTK. On creation, each widget's allocation is
* initialized to a position of (-1, -1) until the widget is
* first sized. The fix is to set the value to (0, 0) as
* expected by SWT.
*/
long /*int*/ topHandle = topHandle ();
GtkAllocation allocation = new GtkAllocation();
if ((parent.style & SWT.MIRRORED) != 0) {
if (OS.GTK_VERSION >= OS.VERSION (2, 18, 0)) {
allocation.x = parent.getClientWidth ();
} else {
OS.GTK_WIDGET_SET_X (topHandle, parent.getClientWidth ());
}
} else {
if (OS.GTK_VERSION >= OS.VERSION (2, 18, 0)) {
allocation.x = 0;
} else {
OS.GTK_WIDGET_SET_X (topHandle, 0);
}
}
if (OS.GTK_VERSION >= OS.VERSION (2, 18, 0)) {
allocation.y = 0;
OS.gtk_widget_set_allocation(topHandle, allocation);
} else {
OS.GTK_WIDGET_SET_Y (topHandle, 0);
}
} else {
resizeHandle (1, 1);
forceResize ();
}
}
/**
* Sets the receiver's pop up menu to the argument.
* All controls may optionally have a pop up
* menu that is displayed when the user requests one for
* the control. The sequence of key strokes, button presses
* and/or button releases that are used to request a pop up
* menu is platform specific.
* <p>
* Note: Disposing of a control that has a pop up menu will
* dispose of the menu. To avoid this behavior, set the
* menu to null before the control is disposed.
* </p>
*
* @param menu the new pop up menu
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_MENU_NOT_POP_UP - the menu is not a pop up menu</li>
* <li>ERROR_INVALID_PARENT - if the menu is not in the same widget tree</li>
* <li>ERROR_INVALID_ARGUMENT - if the menu has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setMenu (Menu menu) {
checkWidget();
if (menu != null) {
if ((menu.style & SWT.POP_UP) == 0) {
error (SWT.ERROR_MENU_NOT_POP_UP);
}
if (menu.parent != menuShell ()) {
error (SWT.ERROR_INVALID_PARENT);
}
}
this.menu = menu;
}
void setOrientation (boolean create) {
if ((style & SWT.RIGHT_TO_LEFT) != 0 || !create) {
int dir = (style & SWT.RIGHT_TO_LEFT) != 0 ? OS.GTK_TEXT_DIR_RTL : OS.GTK_TEXT_DIR_LTR;
if (handle != 0) OS.gtk_widget_set_direction (handle, dir);
if (fixedHandle != 0) OS.gtk_widget_set_direction (fixedHandle, dir);
}
}
/**
* Sets the orientation of the receiver, which must be one
* of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>.
* <p>
*
* @param orientation new orientation style
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.7
*/
public void setOrientation (int orientation) {
checkWidget ();
int flags = SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT;
if ((orientation & flags) == 0 || (orientation & flags) == flags) return;
style &= ~flags;
style |= orientation & flags;
setOrientation (false);
style &= ~SWT.MIRRORED;
checkMirrored ();
}
/**
* Changes the parent of the widget to be the one provided if
* the underlying operating system supports this feature.
* Returns <code>true</code> if the parent is successfully changed.
*
* @param parent the new parent for the control.
* @return <code>true</code> if the parent is changed and <code>false</code> otherwise.
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* <li>ERROR_NULL_ARGUMENT - if the parent is <code>null</code></li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public boolean setParent (Composite parent) {
checkWidget ();
if (parent == null) error (SWT.ERROR_NULL_ARGUMENT);
if (parent.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
if (this.parent == parent) return true;
if (!isReparentable ()) return false;
OS.gtk_widget_realize (parent.handle);
long /*int*/ topHandle = topHandle ();
GtkAllocation allocation = new GtkAllocation ();
gtk_widget_get_allocation (topHandle, allocation);
int x = allocation.x;
int y = allocation.y;
int width = (state & ZERO_WIDTH) != 0 ? 0 : allocation.width;
int height = (state & ZERO_HEIGHT) != 0 ? 0 : allocation.height;
if ((this.parent.style & SWT.MIRRORED) != 0) {
x = this.parent.getClientWidth () - width - x;
}
if ((parent.style & SWT.MIRRORED) != 0) {
x = parent.getClientWidth () - width - x;
}
releaseParent ();
Shell newShell = parent.getShell (), oldShell = getShell ();
Decorations newDecorations = parent.menuShell (), oldDecorations = menuShell ();
Menu [] menus = oldShell.findMenus (this);
if (oldShell != newShell || oldDecorations != newDecorations) {
fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
newDecorations.fixAccelGroup ();
oldDecorations.fixAccelGroup ();
}
long /*int*/ newParent = parent.parentingHandle();
OS.gtk_widget_reparent(topHandle, newParent);
if (OS.GTK3) {
OS.swt_fixed_move (newParent, topHandle, x, y);
} else {
OS.gtk_fixed_move (newParent, topHandle, x, y);
}
/*
* Restore the original widget size since GTK does not keep it.
*/
resizeHandle(width, height);
/*
* Cause a size allocation this widget's topHandle. Note that
* all calls to gtk_widget_size_allocate() must be preceded by
* a call to gtk_widget_size_request().
*/
GtkRequisition requisition = new GtkRequisition ();
gtk_widget_size_request (topHandle, requisition);
allocation.x = x;
allocation.y = y;
allocation.width = width;
allocation.height = height;
OS.gtk_widget_size_allocate (topHandle, allocation);
this.parent = parent;
setZOrder (null, false, true);
reskin (SWT.ALL);
return true;
}
void setParentBackground () {
setBackgroundColor (handle, null);
if (fixedHandle != 0) setBackgroundColor (fixedHandle, null);
}
void setParentWindow (long /*int*/ widget) {
}
boolean setRadioSelection (boolean value) {
return false;
}
/**
* If the argument is <code>false</code>, causes subsequent drawing
* operations in the receiver to be ignored. No drawing of any kind
* can occur in the receiver until the flag is set to true.
* Graphics operations that occurred while the flag was
* <code>false</code> are lost. When the flag is set to <code>true</code>,
* the entire widget is marked as needing to be redrawn. Nested calls
* to this method are stacked.
* <p>
* Note: This operation is a hint and may not be supported on some
* platforms or for some widgets.
* </p>
*
* @param redraw the new redraw state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #redraw(int, int, int, int, boolean)
* @see #update()
*/
public void setRedraw (boolean redraw) {
checkWidget();
if (redraw) {
if (--drawCount == 0) {
if (redrawWindow != 0) {
long /*int*/ window = paintWindow ();
/* Explicitly hiding the window avoids flicker on GTK+ >= 2.6 */
OS.gdk_window_hide (redrawWindow);
OS.gdk_window_destroy (redrawWindow);
OS.gdk_window_set_events (window, OS.gtk_widget_get_events (paintHandle ()));
redrawWindow = 0;
}
}
} else {
if (drawCount++ == 0) {
if (gtk_widget_get_realized (handle)) {
long /*int*/ window = paintWindow ();
Rectangle rect = getBounds ();
GdkWindowAttr attributes = new GdkWindowAttr ();
attributes.width = rect.width;
attributes.height = rect.height;
attributes.event_mask = OS.GDK_EXPOSURE_MASK;
attributes.window_type = OS.GDK_WINDOW_CHILD;
redrawWindow = OS.gdk_window_new (window, attributes, 0);
if (redrawWindow != 0) {
int mouseMask = OS.GDK_BUTTON_PRESS_MASK | OS.GDK_BUTTON_RELEASE_MASK |
OS.GDK_ENTER_NOTIFY_MASK | OS.GDK_LEAVE_NOTIFY_MASK |
OS.GDK_POINTER_MOTION_MASK | OS.GDK_POINTER_MOTION_HINT_MASK |
OS.GDK_BUTTON_MOTION_MASK | OS.GDK_BUTTON1_MOTION_MASK |
OS.GDK_BUTTON2_MOTION_MASK | OS.GDK_BUTTON3_MOTION_MASK;
OS.gdk_window_set_events (window, OS.gdk_window_get_events (window) & ~mouseMask);
OS.gdk_window_set_back_pixmap (redrawWindow, 0, false);
OS.gdk_window_show (redrawWindow);
}
}
}
}
}
boolean setTabItemFocus (boolean next) {
if (!isShowing ()) return false;
return forceFocus ();
}
public void setTextDirection(int textDirection) {
checkWidget ();
}
/**
* Sets the receiver's tool tip text to the argument, which
* may be null indicating that the default tool tip for the
* control will be shown. For a control that has a default
* tool tip, such as the Tree control on Windows, setting
* the tool tip text to an empty string replaces the default,
* causing no tool tip text to be shown.
* <p>
* The mnemonic indicator (character '&amp;') is not displayed in a tool tip.
* To display a single '&amp;' in the tool tip, the character '&amp;' can be
* escaped by doubling it in the string.
* </p>
*
* @param string the new tool tip text (or null)
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setToolTipText (String string) {
checkWidget();
setToolTipText (_getShell (), string);
toolTipText = string;
}
void setToolTipText (Shell shell, String newString) {
if (OS.GTK_VERSION >= OS.VERSION (2, 12, 0)) {
/*
* Feature in GTK. In order to prevent children widgets
* from inheriting their parent's tooltip, the tooltip is
* a set on a shell only. In order to force the shell tooltip
* to update when a new tip string is set, the existing string
* in the tooltip is set to null, followed by running a query.
* The real tip text can then be set.
*
* Note that this will only run if the control for which the
* tooltip is being set is the current control (i.e. the control
* under the pointer).
*/
if (display.currentControl == this) {
shell.setToolTipText (shell.handle, eventHandle (), newString);
}
} else {
shell.setToolTipText (eventHandle (), newString);
}
}
/**
* Sets whether this control should send touch events (by default controls do not).
* Setting this to <code>false</code> causes the receiver to send gesture events
* instead. No exception is thrown if a touch-based input device is not
* detected (this can be determined with <code>Display#getTouchEnabled()</code>).
*
* @param enabled the new touch-enabled state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
*
* @see Display#getTouchEnabled
*
* @since 3.7
*/
public void setTouchEnabled(boolean enabled) {
checkWidget();
}
/**
* Marks the receiver as visible if the argument is <code>true</code>,
* and marks it invisible otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some
* other condition makes the receiver not visible, marking
* it visible may not actually cause it to be displayed.
* </p>
*
* @param visible the new visibility state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setVisible (boolean visible) {
checkWidget();
if (((state & HIDDEN) == 0) == visible) return;
long /*int*/ topHandle = topHandle();
if (visible) {
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in the show
* event. If this happens, just return.
*/
sendEvent (SWT.Show);
if (isDisposed ()) return;
state &= ~HIDDEN;
if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) == 0) {
if (enableWindow != 0) OS.gdk_window_show_unraised (enableWindow);
OS.gtk_widget_show (topHandle);
}
} else {
/*
* Bug in GTK. Invoking gtk_widget_hide() on a widget that has
* focus causes a focus_out_event to be sent. If the client disposes
* the widget inside the event, GTK GP's. The fix is to reassign focus
* before hiding the widget.
*
* NOTE: In order to stop the same widget from taking focus,
* temporarily clear and set the GTK_VISIBLE flag.
*/
Control control = null;
boolean fixFocus = false;
if (display.focusEvent != SWT.FocusOut) {
control = display.getFocusControl ();
fixFocus = isFocusAncestor (control);
}
state |= HIDDEN;
if (fixFocus) {
if (OS.GTK3) {
gtk_widget_set_can_focus (topHandle, false);
} else {
gtk_widget_set_visible (topHandle, false);
}
fixFocus (control);
if (isDisposed ()) return;
if (OS.GTK3) {
gtk_widget_set_can_focus (topHandle, true);
} else {
gtk_widget_set_visible (topHandle, true);
}
}
OS.gtk_widget_hide (topHandle);
if (isDisposed ()) return;
if (enableWindow != 0) OS.gdk_window_hide (enableWindow);
sendEvent (SWT.Hide);
}
}
void setZOrder (Control sibling, boolean above, boolean fixRelations) {
setZOrder (sibling, above, fixRelations, true);
}
void setZOrder (Control sibling, boolean above, boolean fixRelations, boolean fixChildren) {
int index = 0, siblingIndex = 0, oldNextIndex = -1;
Control[] children = null;
if (fixRelations) {
/* determine the receiver's and sibling's indexes in the parent */
children = parent._getChildren ();
while (index < children.length) {
if (children [index] == this) break;
index++;
}
if (sibling != null) {
while (siblingIndex < children.length) {
if (children [siblingIndex] == sibling) break;
siblingIndex++;
}
}
/* remove "Labelled by" relationships that will no longer be valid */
removeRelation ();
if (index + 1 < children.length) {
oldNextIndex = index + 1;
children [oldNextIndex].removeRelation ();
}
if (sibling != null) {
if (above) {
sibling.removeRelation ();
} else {
if (siblingIndex + 1 < children.length) {
children [siblingIndex + 1].removeRelation ();
}
}
}
}
long /*int*/ topHandle = topHandle ();
long /*int*/ siblingHandle = sibling != null ? sibling.topHandle () : 0;
long /*int*/ window = gtk_widget_get_window (topHandle);
if (window != 0) {
long /*int*/ siblingWindow = 0;
if (sibling != null) {
if (above && sibling.enableWindow != 0) {
siblingWindow = enableWindow;
} else {
siblingWindow = OS.GTK_WIDGET_WINDOW (siblingHandle);
}
}
long /*int*/ redrawWindow = fixChildren ? parent.redrawWindow : 0;
if (!OS.GDK_WINDOWING_X11 () || (siblingWindow == 0 && (!above || redrawWindow == 0))) {
if (above) {
OS.gdk_window_raise (window);
if (redrawWindow != 0) OS.gdk_window_raise (redrawWindow);
if (enableWindow != 0) OS.gdk_window_raise (enableWindow);
} else {
if (enableWindow != 0) OS.gdk_window_lower (enableWindow);
OS.gdk_window_lower (window);
}
} else {
long /*int*/ siblingW = siblingWindow != 0 ? siblingWindow : redrawWindow;
boolean stack_mode = above;
if (redrawWindow != 0 && siblingWindow == 0) stack_mode = false;
restackWindow (window, siblingW, stack_mode);
if (enableWindow != 0) {
restackWindow (enableWindow, window, true);
}
}
}
if (fixChildren) {
if (above) {
parent.moveAbove (topHandle, siblingHandle);
} else {
parent.moveBelow (topHandle, siblingHandle);
}
}
/* Make sure that the parent internal windows are on the bottom of the stack */
if (!above && fixChildren) parent.fixZOrder ();
if (fixRelations) {
/* determine the receiver's new index in the parent */
if (sibling != null) {
if (above) {
index = siblingIndex - (index < siblingIndex ? 1 : 0);
} else {
index = siblingIndex + (siblingIndex < index ? 1 : 0);
}
} else {
if (above) {
index = 0;
} else {
index = children.length - 1;
}
}
/* add new "Labelled by" relations as needed */
children = parent._getChildren ();
if (0 < index) {
children [index - 1].addRelation (this);
}
if (index + 1 < children.length) {
addRelation (children [index + 1]);
}
if (oldNextIndex != -1) {
if (oldNextIndex <= index) oldNextIndex--;
/* the last two conditions below ensure that duplicate relations are not hooked */
if (0 < oldNextIndex && oldNextIndex != index && oldNextIndex != index + 1) {
children [oldNextIndex - 1].addRelation (children [oldNextIndex]);
}
}
}
}
void setWidgetBackground () {
GdkColor color = (state & BACKGROUND) != 0 ? getBackgroundColor () : null;
if (fixedHandle != 0) setBackgroundColor (fixedHandle, color);
setBackgroundColor (handle, color);
}
boolean showMenu (int x, int y) {
return showMenu (x, y, SWT.MENU_MOUSE);
}
boolean showMenu (int x, int y, int detail) {
Event event = new Event ();
event.x = x;
event.y = y;
event.detail = detail;
sendEvent (SWT.MenuDetect, event);
//widget could be disposed at this point
if (isDisposed ()) return false;
if (event.doit) {
if (menu != null && !menu.isDisposed ()) {
boolean hooksKeys = hooks (SWT.KeyDown) || hooks (SWT.KeyUp);
menu.createIMMenu (hooksKeys ? imHandle() : 0);
if (event.x != x || event.y != y) {
menu.setLocation (event.x, event.y);
}
menu.setVisible (true);
return true;
}
}
return false;
}
void showWidget () {
// Comment this line to disable zero-sized widgets
state |= ZERO_WIDTH | ZERO_HEIGHT;
long /*int*/ topHandle = topHandle ();
long /*int*/ parentHandle = parent.parentingHandle ();
parent.setParentWindow (topHandle);
OS.gtk_container_add (parentHandle, topHandle);
if (handle != 0 && handle != topHandle) OS.gtk_widget_show (handle);
if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) == 0) {
if (fixedHandle != 0) OS.gtk_widget_show (fixedHandle);
}
if (fixedHandle != 0) fixStyle (fixedHandle);
}
void sort (int [] items) {
/* Shell Sort from K&R, pg 108 */
int length = items.length;
for (int gap=length/2; gap>0; gap/=2) {
for (int i=gap; i<length; i++) {
for (int j=i-gap; j>=0; j-=gap) {
if (items [j] <= items [j + gap]) {
int swap = items [j];
items [j] = items [j + gap];
items [j + gap] = swap;
}
}
}
}
}
/**
* Based on the argument, perform one of the expected platform
* traversal action. The argument should be one of the constants:
* <code>SWT.TRAVERSE_ESCAPE</code>, <code>SWT.TRAVERSE_RETURN</code>,
* <code>SWT.TRAVERSE_TAB_NEXT</code>, <code>SWT.TRAVERSE_TAB_PREVIOUS</code>,
* <code>SWT.TRAVERSE_ARROW_NEXT</code>, <code>SWT.TRAVERSE_ARROW_PREVIOUS</code>,
* <code>SWT.TRAVERSE_PAGE_NEXT</code> and <code>SWT.TRAVERSE_PAGE_PREVIOUS</code>.
*
* @param traversal the type of traversal
* @return true if the traversal succeeded
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public boolean traverse (int traversal) {
checkWidget ();
Event event = new Event ();
event.doit = true;
event.detail = traversal;
return traverse (event);
}
/**
* Performs a platform traversal action corresponding to a <code>KeyDown</code> event.
*
* <p>Valid traversal values are
* <code>SWT.TRAVERSE_NONE</code>, <code>SWT.TRAVERSE_MNEMONIC</code>,
* <code>SWT.TRAVERSE_ESCAPE</code>, <code>SWT.TRAVERSE_RETURN</code>,
* <code>SWT.TRAVERSE_TAB_NEXT</code>, <code>SWT.TRAVERSE_TAB_PREVIOUS</code>,
* <code>SWT.TRAVERSE_ARROW_NEXT</code>, <code>SWT.TRAVERSE_ARROW_PREVIOUS</code>,
* <code>SWT.TRAVERSE_PAGE_NEXT</code> and <code>SWT.TRAVERSE_PAGE_PREVIOUS</code>.
* If <code>traversal</code> is <code>SWT.TRAVERSE_NONE</code> then the Traverse
* event is created with standard values based on the KeyDown event. If
* <code>traversal</code> is one of the other traversal constants then the Traverse
* event is created with this detail, and its <code>doit</code> is taken from the
* KeyDown event.
* </p>
*
* @param traversal the type of traversal, or <code>SWT.TRAVERSE_NONE</code> to compute
* this from <code>event</code>
* @param event the KeyDown event
*
* @return <code>true</code> if the traversal succeeded
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT if the event is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.6
*/
public boolean traverse (int traversal, Event event) {
checkWidget ();
if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
return traverse (traversal, event.character, event.keyCode, event.keyLocation, event.stateMask, event.doit);
}
/**
* Performs a platform traversal action corresponding to a <code>KeyDown</code> event.
*
* <p>Valid traversal values are
* <code>SWT.TRAVERSE_NONE</code>, <code>SWT.TRAVERSE_MNEMONIC</code>,
* <code>SWT.TRAVERSE_ESCAPE</code>, <code>SWT.TRAVERSE_RETURN</code>,
* <code>SWT.TRAVERSE_TAB_NEXT</code>, <code>SWT.TRAVERSE_TAB_PREVIOUS</code>,
* <code>SWT.TRAVERSE_ARROW_NEXT</code>, <code>SWT.TRAVERSE_ARROW_PREVIOUS</code>,
* <code>SWT.TRAVERSE_PAGE_NEXT</code> and <code>SWT.TRAVERSE_PAGE_PREVIOUS</code>.
* If <code>traversal</code> is <code>SWT.TRAVERSE_NONE</code> then the Traverse
* event is created with standard values based on the KeyDown event. If
* <code>traversal</code> is one of the other traversal constants then the Traverse
* event is created with this detail, and its <code>doit</code> is taken from the
* KeyDown event.
* </p>
*
* @param traversal the type of traversal, or <code>SWT.TRAVERSE_NONE</code> to compute
* this from <code>event</code>
* @param event the KeyDown event
*
* @return <code>true</code> if the traversal succeeded
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT if the event is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.6
*/
public boolean traverse (int traversal, KeyEvent event) {
checkWidget ();
if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
return traverse (traversal, event.character, event.keyCode, event.keyLocation, event.stateMask, event.doit);
}
boolean traverse (int traversal, char character, int keyCode, int keyLocation, int stateMask, boolean doit) {
if (traversal == SWT.TRAVERSE_NONE) {
switch (keyCode) {
case SWT.ESC: {
traversal = SWT.TRAVERSE_ESCAPE;
doit = true;
break;
}
case SWT.CR: {
traversal = SWT.TRAVERSE_RETURN;
doit = true;
break;
}
case SWT.ARROW_DOWN:
case SWT.ARROW_RIGHT: {
traversal = SWT.TRAVERSE_ARROW_NEXT;
doit = false;
break;
}
case SWT.ARROW_UP:
case SWT.ARROW_LEFT: {
traversal = SWT.TRAVERSE_ARROW_PREVIOUS;
doit = false;
break;
}
case SWT.TAB: {
traversal = (stateMask & SWT.SHIFT) != 0 ? SWT.TRAVERSE_TAB_PREVIOUS : SWT.TRAVERSE_TAB_NEXT;
doit = true;
break;
}
case SWT.PAGE_DOWN: {
if ((stateMask & SWT.CTRL) != 0) {
traversal = SWT.TRAVERSE_PAGE_NEXT;
doit = true;
}
break;
}
case SWT.PAGE_UP: {
if ((stateMask & SWT.CTRL) != 0) {
traversal = SWT.TRAVERSE_PAGE_PREVIOUS;
doit = true;
}
break;
}
default: {
if (character != 0 && (stateMask & (SWT.ALT | SWT.CTRL)) == SWT.ALT) {
traversal = SWT.TRAVERSE_MNEMONIC;
doit = true;
}
break;
}
}
}
Event event = new Event ();
event.character = character;
event.detail = traversal;
event.doit = doit;
event.keyCode = keyCode;
event.keyLocation = keyLocation;
event.stateMask = stateMask;
Shell shell = getShell ();
boolean all = false;
switch (traversal) {
case SWT.TRAVERSE_ESCAPE:
case SWT.TRAVERSE_RETURN:
case SWT.TRAVERSE_PAGE_NEXT:
case SWT.TRAVERSE_PAGE_PREVIOUS: {
all = true;
// FALL THROUGH
}
case SWT.TRAVERSE_ARROW_NEXT:
case SWT.TRAVERSE_ARROW_PREVIOUS:
case SWT.TRAVERSE_TAB_NEXT:
case SWT.TRAVERSE_TAB_PREVIOUS: {
/* traversal is a valid traversal action */
break;
}
case SWT.TRAVERSE_MNEMONIC: {
return translateMnemonic (event, null) || shell.translateMnemonic (event, this);
}
default: {
/* traversal is not a valid traversal action */
return false;
}
}
Control control = this;
do {
if (control.traverse (event)) return true;
if (!event.doit && control.hooks (SWT.Traverse)) return false;
if (control == shell) return false;
control = control.parent;
} while (all && control != null);
return false;
}
boolean translateMnemonic (Event event, Control control) {
if (control == this) return false;
if (!isVisible () || !isEnabled ()) return false;
event.doit = this == display.mnemonicControl || mnemonicMatch (event.character);
return traverse (event);
}
boolean translateMnemonic (int keyval, GdkEventKey gdkEvent) {
int key = OS.gdk_keyval_to_unicode (keyval);
if (key < 0x20) return false;
if (gdkEvent.state == 0) {
int code = traversalCode (keyval, gdkEvent);
if ((code & SWT.TRAVERSE_MNEMONIC) == 0) return false;
} else {
Shell shell = _getShell ();
int mask = OS.GDK_CONTROL_MASK | OS.GDK_SHIFT_MASK | OS.GDK_MOD1_MASK;
if ((gdkEvent.state & mask) != OS.gtk_window_get_mnemonic_modifier (shell.shellHandle)) return false;
}
Decorations shell = menuShell ();
if (shell.isVisible () && shell.isEnabled ()) {
Event event = new Event ();
event.detail = SWT.TRAVERSE_MNEMONIC;
if (setKeyState (event, gdkEvent)) {
return translateMnemonic (event, null) || shell.translateMnemonic (event, this);
}
}
return false;
}
boolean translateTraversal (GdkEventKey keyEvent) {
int detail = SWT.TRAVERSE_NONE;
int key = keyEvent.keyval;
int code = traversalCode (key, keyEvent);
boolean all = false;
switch (key) {
case OS.GDK_Escape: {
all = true;
detail = SWT.TRAVERSE_ESCAPE;
break;
}
case OS.GDK_KP_Enter:
case OS.GDK_Return: {
all = true;
detail = SWT.TRAVERSE_RETURN;
break;
}
case OS.GDK_ISO_Left_Tab:
case OS.GDK_Tab: {
boolean next = (keyEvent.state & OS.GDK_SHIFT_MASK) == 0;
detail = next ? SWT.TRAVERSE_TAB_NEXT : SWT.TRAVERSE_TAB_PREVIOUS;
break;
}
case OS.GDK_Up:
case OS.GDK_Left:
case OS.GDK_Down:
case OS.GDK_Right: {
boolean next = key == OS.GDK_Down || key == OS.GDK_Right;
if (parent != null && (parent.style & SWT.MIRRORED) != 0) {
if (key == OS.GDK_Left || key == OS.GDK_Right) next = !next;
}
detail = next ? SWT.TRAVERSE_ARROW_NEXT : SWT.TRAVERSE_ARROW_PREVIOUS;
break;
}
case OS.GDK_Page_Up:
case OS.GDK_Page_Down: {
all = true;
if ((keyEvent.state & OS.GDK_CONTROL_MASK) == 0) return false;
detail = key == OS.GDK_Page_Down ? SWT.TRAVERSE_PAGE_NEXT : SWT.TRAVERSE_PAGE_PREVIOUS;
break;
}
default:
return false;
}
Event event = new Event ();
event.doit = (code & detail) != 0;
event.detail = detail;
event.time = keyEvent.time;
if (!setKeyState (event, keyEvent)) return false;
Shell shell = getShell ();
Control control = this;
do {
if (control.traverse (event)) return true;
if (!event.doit && control.hooks (SWT.Traverse)) return false;
if (control == shell) return false;
control = control.parent;
} while (all && control != null);
return false;
}
int traversalCode (int key, GdkEventKey event) {
int code = SWT.TRAVERSE_RETURN | SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_PAGE_NEXT | SWT.TRAVERSE_PAGE_PREVIOUS;
Shell shell = getShell ();
if (shell.parent != null) code |= SWT.TRAVERSE_ESCAPE;
return code;
}
boolean traverse (Event event) {
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in the traverse
* event. If this happens, return true to stop further
* event processing.
*/
sendEvent (SWT.Traverse, event);
if (isDisposed ()) return true;
if (!event.doit) return false;
switch (event.detail) {
case SWT.TRAVERSE_NONE: return true;
case SWT.TRAVERSE_ESCAPE: return traverseEscape ();
case SWT.TRAVERSE_RETURN: return traverseReturn ();
case SWT.TRAVERSE_TAB_NEXT: return traverseGroup (true);
case SWT.TRAVERSE_TAB_PREVIOUS: return traverseGroup (false);
case SWT.TRAVERSE_ARROW_NEXT: return traverseItem (true);
case SWT.TRAVERSE_ARROW_PREVIOUS: return traverseItem (false);
case SWT.TRAVERSE_MNEMONIC: return traverseMnemonic (event.character);
case SWT.TRAVERSE_PAGE_NEXT: return traversePage (true);
case SWT.TRAVERSE_PAGE_PREVIOUS: return traversePage (false);
}
return false;
}
boolean traverseEscape () {
return false;
}
boolean traverseGroup (boolean next) {
Control root = computeTabRoot ();
Widget group = computeTabGroup ();
Widget [] list = root.computeTabList ();
int length = list.length;
int index = 0;
while (index < length) {
if (list [index] == group) break;
index++;
}
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in focus in
* or out events. Ensure that a disposed widget is
* not accessed.
*/
if (index == length) return false;
int start = index, offset = (next) ? 1 : -1;
while ((index = ((index + offset + length) % length)) != start) {
Widget widget = list [index];
if (!widget.isDisposed () && widget.setTabGroupFocus (next)) {
return true;
}
}
if (group.isDisposed ()) return false;
return group.setTabGroupFocus (next);
}
boolean traverseItem (boolean next) {
Control [] children = parent._getChildren ();
int length = children.length;
int index = 0;
while (index < length) {
if (children [index] == this) break;
index++;
}
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in focus in
* or out events. Ensure that a disposed widget is
* not accessed.
*/
if (index == length) return false;
int start = index, offset = (next) ? 1 : -1;
while ((index = (index + offset + length) % length) != start) {
Control child = children [index];
if (!child.isDisposed () && child.isTabItem ()) {
if (child.setTabItemFocus (next)) return true;
}
}
return false;
}
boolean traverseReturn () {
return false;
}
boolean traversePage (boolean next) {
return false;
}
boolean traverseMnemonic (char key) {
return mnemonicHit (key);
}
/**
* Forces all outstanding paint requests for the widget
* to be processed before this method returns. If there
* are no outstanding paint request, this method does
* nothing.
* <p>
* Note: This method does not cause a redraw.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #redraw()
* @see #redraw(int, int, int, int, boolean)
* @see PaintListener
* @see SWT#Paint
*/
public void update () {
checkWidget ();
update (false, true);
}
void update (boolean all, boolean flush) {
// checkWidget();
if (!gtk_widget_get_visible (topHandle ())) return;
if (!gtk_widget_get_realized (handle)) return;
long /*int*/ window = paintWindow ();
if (flush) display.flushExposes (window, all);
OS.gdk_window_process_updates (window, all);
OS.gdk_flush ();
}
void updateBackgroundMode () {
int oldState = state & PARENT_BACKGROUND;
checkBackground ();
if (oldState != (state & PARENT_BACKGROUND)) {
setBackground ();
}
}
void updateLayout (boolean all) {
/* Do nothing */
}
long /*int*/ windowProc (long /*int*/ handle, long /*int*/ arg0, long /*int*/ user_data) {
switch ((int)/*64*/user_data) {
case EXPOSE_EVENT_INVERSE: {
if ((state & OBSCURED) != 0) break;
if (OS.USE_CAIRO) {
Control control = findBackgroundControl ();
boolean draw = control != null && control.backgroundImage != null;
if (OS.GTK3 && !draw && (state & CANVAS) != 0) {
GdkRGBA rgba = new GdkRGBA();
long /*int*/ context = OS.gtk_widget_get_style_context (handle);
OS.gtk_style_context_get_background_color (context, OS.GTK_STATE_FLAG_NORMAL, rgba);
draw = rgba.alpha == 0;
}
if (draw) {
if (OS.GTK3) {
long /*int*/ cairo = arg0;
GdkRectangle rect = new GdkRectangle ();
OS.gdk_cairo_get_clip_rectangle (cairo, rect);
if (control == null) control = this;
drawBackground (control, 0, cairo, 0, rect.x, rect.y, rect.width, rect.height);
} else {
GdkEventExpose gdkEvent = new GdkEventExpose ();
OS.memmove (gdkEvent, arg0, GdkEventExpose.sizeof);
long /*int*/ paintWindow = paintWindow();
long /*int*/ window = gdkEvent.window;
if (window != paintWindow) break;
drawBackground(control, window, gdkEvent.region, gdkEvent.area_x, gdkEvent.area_y, gdkEvent.area_width, gdkEvent.area_height);
}
}
}
if (OS.GTK_VERSION < OS.VERSION (2, 8, 0)) {
Control control = findBackgroundControl ();
if (control != null && control.backgroundImage != null) {
GdkEventExpose gdkEvent = new GdkEventExpose ();
OS.memmove (gdkEvent, arg0, GdkEventExpose.sizeof);
long /*int*/ paintWindow = paintWindow();
long /*int*/ window = gdkEvent.window;
if (window != paintWindow) break;
long /*int*/ gdkGC = OS.gdk_gc_new (window);
OS.gdk_gc_set_clip_region (gdkGC, gdkEvent.region);
int[] dest_x = new int[1], dest_y = new int[1];
OS.gtk_widget_translate_coordinates (paintHandle (), control.paintHandle (), 0, 0, dest_x, dest_y);
OS.gdk_gc_set_fill (gdkGC, OS.GDK_TILED);
OS.gdk_gc_set_ts_origin (gdkGC, -dest_x [0], -dest_y [0]);
OS.gdk_gc_set_tile (gdkGC, control.backgroundImage.pixmap);
OS.gdk_draw_rectangle (window, gdkGC, 1, gdkEvent.area_x, gdkEvent.area_y, gdkEvent.area_width, gdkEvent.area_height);
OS.g_object_unref (gdkGC);
}
}
break;
}
}
return super.windowProc (handle, arg0, user_data);
}
}