| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.internal.*; |
| import org.eclipse.swt.internal.cairo.*; |
| import org.eclipse.swt.internal.motif.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of this class are controls which are capable |
| * of containing other controls. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>NO_BACKGROUND, NO_FOCUS, NO_MERGE_PAINTS, NO_REDRAW_RESIZE, NO_RADIO_GROUP, EMBEDDED, DOUBLE_BUFFERED</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * Note: The <code>NO_BACKGROUND</code>, <code>NO_FOCUS</code>, <code>NO_MERGE_PAINTS</code>, |
| * and <code>NO_REDRAW_RESIZE</code> styles are intended for use with <code>Canvas</code>. |
| * They can be used with <code>Composite</code> if you are drawing your own, but their |
| * behavior is undefined if they are used with subclasses of <code>Composite</code> other |
| * than <code>Canvas</code>. |
| * </p><p> |
| * Note: The <code>CENTER</code> style, although undefined for composites, has the |
| * same value as <code>EMBEDDED</code> which is used to embed widgets from other |
| * widget toolkits into SWT. On some operating systems (GTK, Motif), this may cause |
| * the children of this composite to be obscured. |
| * </p><p> |
| * This class may be subclassed by custom control implementors |
| * who are building controls that are constructed from aggregates |
| * of other controls. |
| * </p> |
| * |
| * @see Canvas |
| * @see <a href="http://www.eclipse.org/swt/snippets/#composite">Composite snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| */ |
| public class Composite extends Scrollable { |
| Layout layout; |
| public int embeddedHandle; |
| int focusHandle, damagedRegion, clientWindow; |
| Control [] tabList; |
| int layoutCount, backgroundMode; |
| |
| static byte [] _XEMBED_INFO = Converter.wcsToMbcs (null, "_XEMBED_INFO", true); |
| static byte[] _XEMBED = Converter.wcsToMbcs (null, "_XEMBED", true); |
| |
| Composite () { |
| /* Do nothing */ |
| } |
| /** |
| * 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 widget which will be the parent of the new instance (cannot be null) |
| * @param style the style of widget 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> |
| * </ul> |
| * |
| * @see SWT#NO_BACKGROUND |
| * @see SWT#NO_FOCUS |
| * @see SWT#NO_MERGE_PAINTS |
| * @see SWT#NO_REDRAW_RESIZE |
| * @see SWT#NO_RADIO_GROUP |
| * @see SWT#EMBEDDED |
| * @see SWT#DOUBLE_BUFFERED |
| * @see Widget#getStyle |
| */ |
| public Composite (Composite parent, int style) { |
| super (parent, style); |
| } |
| static int checkStyle (int style) { |
| style &= ~SWT.TRANSPARENT; |
| return style; |
| } |
| Control [] _getChildren () { |
| int [] argList = {OS.XmNchildren, 0, OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int ptr = argList [1], count = argList [3]; |
| if (count == 0 || ptr == 0) return new Control [0]; |
| int [] handles = new int [count]; |
| OS.memmove (handles, ptr, count * 4); |
| int length = focusHandle != 0 ? count - 1 : count; |
| Control [] children = new Control [length]; |
| int i = 0, j = 0; |
| while (i < count) { |
| int handle = handles [i]; |
| if (handle != 0) { |
| Widget widget = display.getWidget (handle); |
| if (widget != null && widget != this) { |
| if (widget instanceof Control) { |
| children [j++] = (Control) widget; |
| } |
| } |
| } |
| i++; |
| } |
| if (j == length) return children; |
| Control [] newChildren = new Control [j]; |
| System.arraycopy (children, 0, newChildren, 0, j); |
| return newChildren; |
| } |
| Control [] _getTabList () { |
| if (tabList == null) return tabList; |
| int count = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (!tabList [i].isDisposed ()) count++; |
| } |
| if (count == tabList.length) return tabList; |
| Control [] newList = new Control [count]; |
| int index = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (!tabList [i].isDisposed ()) { |
| newList [index++] = tabList [i]; |
| } |
| } |
| tabList = newList; |
| return tabList; |
| } |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| display.runSkin(); |
| Point size; |
| if (layout != null) { |
| if ((wHint == SWT.DEFAULT) || (hHint == SWT.DEFAULT)) { |
| changed |= (state & LAYOUT_CHANGED) != 0; |
| size = layout.computeSize (this, wHint, hHint, changed); |
| state &= ~LAYOUT_CHANGED; |
| } else { |
| size = new Point (wHint, hHint); |
| } |
| } else { |
| size = minimumSize (wHint, hHint, changed); |
| if (size.x == 0) size.x = DEFAULT_WIDTH; |
| if (size.y == 0) size.y = DEFAULT_HEIGHT; |
| } |
| if (wHint != SWT.DEFAULT) size.x = wHint; |
| if (hHint != SWT.DEFAULT) size.y = hHint; |
| Rectangle trim = computeTrim (0, 0, size.x, size.y); |
| return new Point (trim.width, trim.height); |
| } |
| Control [] computeTabList () { |
| Control result [] = super.computeTabList (); |
| if (result.length == 0) return result; |
| Control [] list = tabList != null ? _getTabList () : _getChildren (); |
| for (int i=0; i<list.length; i++) { |
| Control child = list [i]; |
| Control [] childList = child.computeTabList (); |
| if (childList.length != 0) { |
| Control [] newResult = new Control [result.length + childList.length]; |
| System.arraycopy (result, 0, newResult, 0, result.length); |
| System.arraycopy (childList, 0, newResult, result.length, childList.length); |
| result = newResult; |
| } |
| } |
| return result; |
| } |
| /** |
| * Clears any data that has been cached by a Layout for all widgets that |
| * are in the parent hierarchy of the changed control up to and including the |
| * receiver. If an ancestor does not have a layout, it is skipped. |
| * |
| * @param changed an array of controls that changed state and require a recalculation of size |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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 3.1 |
| */ |
| public void changed (Control[] changed) { |
| checkWidget (); |
| if (changed == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| for (int i=0; i<changed.length; i++) { |
| Control control = changed [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| boolean ancestor = false; |
| Composite composite = control.parent; |
| while (composite != null) { |
| ancestor = composite == this; |
| if (ancestor) break; |
| composite = composite.parent; |
| } |
| if (!ancestor) error (SWT.ERROR_INVALID_PARENT); |
| } |
| for (int i=0; i<changed.length; i++) { |
| Control child = changed [i]; |
| Composite composite = child.parent; |
| while (child != this) { |
| if (composite.layout == null || !composite.layout.flushCache (child)) { |
| composite.state |= LAYOUT_CHANGED; |
| } |
| child = composite; |
| composite = child.parent; |
| } |
| } |
| } |
| void checkBuffered () { |
| if ((state & CANVAS) == 0) { |
| super.checkBuffered (); |
| } |
| } |
| protected void checkSubclass () { |
| /* Do nothing - Subclassing is allowed */ |
| } |
| void createHandle (int index) { |
| state |= CANVAS; |
| boolean scroll = (style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0; |
| if (!scroll) state |= THEME_BACKGROUND; |
| createHandle (index, parent.handle, scroll); |
| } |
| void createHandle (int index, int parentHandle, boolean scrolled) { |
| if (scrolled) { |
| int [] argList = {OS.XmNancestorSensitive, 1}; |
| scrolledHandle = OS.XmCreateMainWindow (parentHandle, null, argList, argList.length / 2); |
| if (scrolledHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0) { |
| int [] argList1 = { |
| OS.XmNmarginWidth, 3, |
| OS.XmNmarginHeight, 3, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNshadowType, OS.XmSHADOW_IN, |
| OS.XmNshadowThickness, hasBorder () ? display.buttonShadowThickness : 0, |
| }; |
| formHandle = OS.XmCreateForm (scrolledHandle, null, argList1, argList1.length / 2); |
| if (formHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| int [] argList2 = { |
| OS.XmNtopAttachment, OS.XmATTACH_FORM, |
| OS.XmNbottomAttachment, OS.XmATTACH_FORM, |
| OS.XmNleftAttachment, OS.XmATTACH_FORM, |
| OS.XmNrightAttachment, OS.XmATTACH_FORM, |
| OS.XmNresizable, 0, |
| OS.XmNmarginWidth, 0, |
| OS.XmNmarginHeight, 0, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNtraversalOn, (style & SWT.NO_FOCUS) != 0 ? 0 : 1, |
| }; |
| handle = OS.XmCreateDrawingArea (formHandle, null, argList2, argList2.length / 2); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } else { |
| int [] argList = { |
| OS.XmNancestorSensitive, 1, |
| OS.XmNborderWidth, hasBorder () ? 1 : 0, |
| OS.XmNmarginWidth, 0, |
| OS.XmNmarginHeight, 0, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNtraversalOn, (style & SWT.NO_FOCUS) != 0 ? 0 : 1, |
| }; |
| if (scrolledHandle != 0) parentHandle = scrolledHandle; |
| handle = OS.XmCreateDrawingArea (parentHandle, null, argList, argList.length / 2); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| int [] argList = {OS.XmNtraversalOn, 0}; |
| focusHandle = OS.XmCreateDrawingArea (handle, null, argList, argList.length / 2); |
| if (focusHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| int [] argList1 = {OS.XmNforeground, 0, OS.XmNbackground, 0}; |
| OS.XtGetValues (handle, argList1, argList1.length / 2); |
| if (formHandle != 0) OS.XtSetValues (formHandle, argList1, argList1.length / 2); |
| } |
| int defaultBackground () { |
| return display.compositeBackground; |
| } |
| int defaultForeground () { |
| return display.compositeForeground; |
| } |
| void deregister () { |
| super.deregister (); |
| if (focusHandle != 0) display.removeWidget (focusHandle); |
| } |
| void drawBackground (GC gc, int x, int y, int width, int height) { |
| drawBackground(gc, x, y, width, height, 0, 0); |
| } |
| /** |
| * Fills the interior of the rectangle specified by the arguments, |
| * with the receiver's background. |
| * |
| * <p>The <code>offsetX</code> and <code>offsetY</code> are used to map from |
| * the <code>gc</code> origin to the origin of the parent image background. This is useful |
| * to ensure proper alignment of the image background.</p> |
| * |
| * @param gc the gc where the rectangle is to be filled |
| * @param x the x coordinate of the rectangle to be filled |
| * @param y the y coordinate of the rectangle to be filled |
| * @param width the width of the rectangle to be filled |
| * @param height the height of the rectangle to be filled |
| * @param offsetX the image background x offset |
| * @param offsetY the image background y offset |
| * |
| * @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 3.6 |
| */ |
| public void drawBackground (GC gc, int x, int y, int width, int height, int offsetX, int offsetY) { |
| checkWidget (); |
| if (gc == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| Control control = findBackgroundControl (); |
| if (control != null) { |
| GCData data = gc.getGCData (); |
| int /*long*/ cairo = data.cairo; |
| if (cairo != 0) { |
| Cairo.cairo_save (cairo); |
| if (control.backgroundImage != null) { |
| short [] root_x = new short [1], root_y = new short [1]; |
| OS.XtTranslateCoords (handle, (short) 0, (short) 0, root_x, root_y); |
| short [] control_x = new short [1], control_y = new short [1]; |
| OS.XtTranslateCoords (control.handle, (short) 0, (short) 0, control_x, control_y); |
| int tileX = root_x[0] - control_x[0], tileY = root_y[0] - control_y[0]; |
| Cairo.cairo_translate (cairo, -tileX - offsetX, -tileY - offsetY); |
| x += tileX + offsetX; |
| y += tileY + offsetY; |
| int xDisplay = OS.XtDisplay (handle); |
| int xVisual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); |
| int xDrawable = control.backgroundImage.pixmap; |
| int [] unused = new int [1]; int [] w = new int [1]; int [] h = new int [1]; |
| OS.XGetGeometry (xDisplay, xDrawable, unused, unused, unused, w, h, unused, unused); |
| int /*long*/ surface = Cairo.cairo_xlib_surface_create (xDisplay, xDrawable, xVisual, w [0], h [0]); |
| if (surface == 0) error (SWT.ERROR_NO_HANDLES); |
| int /*long*/ pattern = Cairo.cairo_pattern_create_for_surface (surface); |
| if (pattern == 0) error (SWT.ERROR_NO_HANDLES); |
| Cairo.cairo_pattern_set_extend (pattern, Cairo.CAIRO_EXTEND_REPEAT); |
| Cairo.cairo_set_source (cairo, pattern); |
| Cairo.cairo_surface_destroy (surface); |
| Cairo.cairo_pattern_destroy (pattern); |
| } else { |
| XColor color = getXColor (control.getBackgroundPixel ()); |
| Cairo.cairo_set_source_rgba (cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); |
| } |
| Cairo.cairo_rectangle (cairo, x, y, width, height); |
| Cairo.cairo_fill (cairo); |
| Cairo.cairo_restore (cairo); |
| } else { |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xGC = gc.handle; |
| XGCValues values = new XGCValues(); |
| if (control.backgroundImage != null) { |
| OS.XGetGCValues (xDisplay, xGC, OS.GCFillStyle | OS.GCTile | OS.GCTileStipXOrigin | OS.GCTileStipYOrigin, values); |
| short [] root_x = new short [1], root_y = new short [1]; |
| OS.XtTranslateCoords (handle, (short) 0, (short) 0, root_x, root_y); |
| short [] control_x = new short [1], control_y = new short [1]; |
| OS.XtTranslateCoords (control.handle, (short) 0, (short) 0, control_x, control_y); |
| int tileX = root_x[0] - control_x[0], tileY = root_y[0] - control_y[0]; |
| OS.XSetFillStyle (xDisplay, xGC, OS.FillTiled); |
| OS.XSetTSOrigin (xDisplay, xGC, -tileX - offsetX, -tileY - offsetY); |
| OS.XSetTile (xDisplay, xGC, control.backgroundImage.pixmap); |
| OS.XFillRectangle (data.display, data.drawable, xGC, x, y, width, height); |
| OS.XSetFillStyle (xDisplay, xGC, values.fill_style); |
| OS.XSetTSOrigin (xDisplay, xGC, values.ts_x_origin, values.ts_y_origin); |
| } else { |
| OS.XGetGCValues (xDisplay, xGC, OS.GCForeground, values); |
| OS.XSetForeground (xDisplay, xGC, control.getBackgroundPixel ()); |
| OS.XFillRectangle (data.display, data.drawable, xGC, x, y, width, height); |
| OS.XSetForeground (xDisplay, xGC, values.foreground); |
| } |
| } |
| } else { |
| gc.fillRectangle (x, y, width, height); |
| } |
| } |
| Composite findDeferredControl () { |
| return layoutCount > 0 ? this : parent.findDeferredControl (); |
| } |
| void fixTabList (Control control) { |
| if (tabList == null) return; |
| int count = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (tabList [i] == control) count++; |
| } |
| if (count == 0) return; |
| Control [] newList = null; |
| int length = tabList.length - count; |
| if (length != 0) { |
| newList = new Control [length]; |
| int index = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (tabList [i] != control) { |
| newList [index++] = tabList [i]; |
| } |
| } |
| } |
| tabList = newList; |
| } |
| int focusHandle () { |
| if (focusHandle == 0) return super.focusHandle (); |
| return focusHandle; |
| } |
| int focusProc (int w, int client_data, int call_data, int continue_to_dispatch) { |
| XFocusChangeEvent xEvent = new XFocusChangeEvent (); |
| OS.memmove (xEvent, call_data, XFocusChangeEvent.sizeof); |
| int handle = OS.XtWindowToWidget (xEvent.display, xEvent.window); |
| Shell shell = getShell (); |
| if (handle != shell.shellHandle) { |
| return super.XFocusChange (w, client_data, call_data, continue_to_dispatch); |
| } |
| if (xEvent.mode != OS.NotifyNormal) return 0; |
| switch (xEvent.detail) { |
| case OS.NotifyNonlinear: |
| case OS.NotifyNonlinearVirtual: { |
| switch (xEvent.type) { |
| case OS.FocusIn: |
| sendClientEvent (OS.CurrentTime, OS.XEMBED_WINDOW_ACTIVATE, 0, 0, 0); |
| break; |
| case OS.FocusOut: |
| sendClientEvent (OS.CurrentTime, OS.XEMBED_WINDOW_DEACTIVATE, 0, 0, 0); |
| break; |
| } |
| } |
| } |
| return 0; |
| } |
| boolean fowardKeyEvent (int event) { |
| if (clientWindow == 0) return false; |
| boolean warnings = display.getWarnings (); |
| display.setWarnings (false); |
| XKeyEvent xEvent = new XKeyEvent (); |
| OS.memmove (xEvent, event, XKeyEvent.sizeof); |
| xEvent.window = clientWindow; |
| int newEvent = OS.XtMalloc (XEvent.sizeof); |
| OS.memmove (newEvent, xEvent, XKeyEvent.sizeof); |
| int xDisplay = OS.XtDisplay (handle); |
| OS.XSendEvent (xDisplay, clientWindow, false, 0, newEvent); |
| OS.XSync (xDisplay, false); |
| OS.XtFree (newEvent); |
| display.setWarnings (warnings); |
| return true; |
| } |
| /** |
| * Returns the receiver's background drawing mode. This |
| * will be one of the following constants defined in class |
| * <code>SWT</code>: |
| * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>, |
| * <code>INHERTIT_FORCE</code>. |
| * |
| * @return the background mode |
| * |
| * @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 SWT |
| * |
| * @since 3.2 |
| */ |
| public int getBackgroundMode () { |
| checkWidget (); |
| return backgroundMode; |
| } |
| /** |
| * Returns a (possibly empty) array containing the receiver's children. |
| * Children are returned in the order that they are drawn. The topmost |
| * control appears at the beginning of the array. Subsequent controls |
| * draw beneath this control and appear later in the array. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of children, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return an array of children |
| * |
| * @see Control#moveAbove |
| * @see Control#moveBelow |
| * |
| * @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 Control [] getChildren () { |
| checkWidget(); |
| return _getChildren (); |
| } |
| public Rectangle getClientArea () { |
| checkWidget(); |
| return _getClientArea(); |
| } |
| |
| Rectangle _getClientArea() { |
| /* |
| * Bug in Motif. For some reason, if a form has not been realized, |
| * calling XtResizeWidget () on the form does not lay out properly. |
| * The fix is to force the widget to be realized by forcing the shell |
| * to be realized. |
| */ |
| if (formHandle != 0) { |
| if (!OS.XtIsRealized (handle)) getShell ().realizeWidget (); |
| } |
| return super.getClientArea (); |
| } |
| int getChildrenCount () { |
| /* |
| * NOTE: The current implementation will count |
| * non-registered children. |
| */ |
| int [] argList = {OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| if (focusHandle != 0) return Math.max (0, argList [1] - 1); |
| return argList [1]; |
| } |
| /** |
| * Returns layout which is associated with the receiver, or |
| * null if one has not been set. |
| * |
| * @return the receiver's layout 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 Layout getLayout () { |
| checkWidget(); |
| return layout; |
| } |
| /** |
| * Returns <code>true</code> if the receiver has deferred |
| * the performing of layout, and <code>false</code> otherwise. |
| * |
| * @return the receiver's deferred layout 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 #setLayoutDeferred(boolean) |
| * @see #isLayoutDeferred() |
| * |
| * @since 3.1 |
| */ |
| public boolean getLayoutDeferred () { |
| checkWidget (); |
| return layoutCount > 0 ; |
| } |
| /** |
| * Gets the (possibly empty) tabbing order for the control. |
| * |
| * @return tabList the ordered list of controls representing the tab order |
| * |
| * @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 #setTabList |
| */ |
| public Control [] getTabList () { |
| checkWidget (); |
| Control [] tabList = _getTabList (); |
| if (tabList == null) { |
| int count = 0; |
| Control [] list =_getChildren (); |
| for (int i=0; i<list.length; i++) { |
| if (list [i].isTabGroup ()) count++; |
| } |
| tabList = new Control [count]; |
| int index = 0; |
| for (int i=0; i<list.length; i++) { |
| if (list [i].isTabGroup ()) { |
| tabList [index++] = list [i]; |
| } |
| } |
| } |
| return tabList; |
| } |
| boolean hasBorder () { |
| return (style & SWT.BORDER) != 0; |
| } |
| void hookEvents () { |
| super.hookEvents (); |
| if ((state & CANVAS) != 0) { |
| OS.XtInsertEventHandler (handle, 0, true, display.windowProc, NON_MASKABLE, OS.XtListTail); |
| } |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| int focusProc = display.focusProc; |
| int windowProc = display.windowProc; |
| OS.XtInsertEventHandler (handle, OS.StructureNotifyMask | OS.SubstructureNotifyMask, false, windowProc, STRUCTURE_NOTIFY, OS.XtListTail); |
| OS.XtInsertEventHandler (handle, OS.PropertyChangeMask, false, windowProc, PROPERTY_CHANGE, OS.XtListTail); |
| OS.XtInsertEventHandler (handle, 0, true, windowProc, NON_MASKABLE, OS.XtListTail); |
| Shell shell = getShell (); |
| OS.XtInsertEventHandler (shell.shellHandle, OS.FocusChangeMask, false, focusProc, handle, OS.XtListTail); |
| } |
| } |
| |
| boolean hooksKeys () { |
| return hooks (SWT.KeyDown) || hooks (SWT.KeyUp); |
| } |
| /** |
| * Returns <code>true</code> if the receiver or any ancestor |
| * up to and including the receiver's nearest ancestor shell |
| * has deferred the performing of layouts. Otherwise, <code>false</code> |
| * is returned. |
| * |
| * @return the receiver's deferred layout 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 #setLayoutDeferred(boolean) |
| * @see #getLayoutDeferred() |
| * |
| * @since 3.1 |
| */ |
| public boolean isLayoutDeferred () { |
| checkWidget (); |
| return findDeferredControl () != null; |
| } |
| boolean isTabGroup () { |
| if ((state & CANVAS) != 0) return true; |
| return super.isTabGroup (); |
| } |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the receiver does not have a layout, do nothing. |
| * <p> |
| * This is equivalent to calling <code>layout(true)</code>. |
| * </p> |
| * <p> |
| * Note: Layout is different from painting. If a child is |
| * moved or resized such that an area in the parent is |
| * exposed, then the parent will paint. If no child is |
| * affected, the parent will not paint. |
| * </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> |
| */ |
| public void layout () { |
| checkWidget (); |
| layout (true); |
| } |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the argument is <code>true</code> the layout must not rely |
| * on any information it has cached about the immediate children. If it |
| * is <code>false</code> the layout may (potentially) optimize the |
| * work it is doing by assuming that none of the receiver's |
| * children has changed state since the last layout. |
| * If the receiver does not have a layout, do nothing. |
| * <p> |
| * If a child is resized as a result of a call to layout, the |
| * resize event will invoke the layout of the child. The layout |
| * will cascade down through all child widgets in the receiver's widget |
| * tree until a child is encountered that does not resize. Note that |
| * a layout due to a resize will not flush any cached information |
| * (same as <code>layout(false)</code>). |
| * </p> |
| * <p> |
| * Note: Layout is different from painting. If a child is |
| * moved or resized such that an area in the parent is |
| * exposed, then the parent will paint. If no child is |
| * affected, the parent will not paint. |
| * </p> |
| * |
| * @param changed <code>true</code> if the layout must flush its caches, 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> |
| */ |
| public void layout (boolean changed) { |
| checkWidget (); |
| if (layout == null) return; |
| layout (changed, false); |
| } |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the changed argument is <code>true</code> the layout must not rely |
| * on any information it has cached about its children. If it |
| * is <code>false</code> the layout may (potentially) optimize the |
| * work it is doing by assuming that none of the receiver's |
| * children has changed state since the last layout. |
| * If the all argument is <code>true</code> the layout will cascade down |
| * through all child widgets in the receiver's widget tree, regardless of |
| * whether the child has changed size. The changed argument is applied to |
| * all layouts. If the all argument is <code>false</code>, the layout will |
| * <em>not</em> cascade down through all child widgets in the receiver's widget |
| * tree. However, if a child is resized as a result of a call to layout, the |
| * resize event will invoke the layout of the child. Note that |
| * a layout due to a resize will not flush any cached information |
| * (same as <code>layout(false)</code>). |
| * </p> |
| * <p> |
| * Note: Layout is different from painting. If a child is |
| * moved or resized such that an area in the parent is |
| * exposed, then the parent will paint. If no child is |
| * affected, the parent will not paint. |
| * </p> |
| * |
| * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
| * @param all <code>true</code> if all children in the receiver's widget tree should be laid out, 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> |
| * |
| * @since 3.1 |
| */ |
| public void layout (boolean changed, boolean all) { |
| checkWidget (); |
| if (layout == null && !all) return; |
| markLayout (changed, all); |
| updateLayout (all); |
| } |
| /** |
| * Forces a lay out (that is, sets the size and location) of all widgets that |
| * are in the parent hierarchy of the changed control up to and including the |
| * receiver. The layouts in the hierarchy must not rely on any information |
| * cached about the changed control or any of its ancestors. The layout may |
| * (potentially) optimize the work it is doing by assuming that none of the |
| * peers of the changed control have changed state since the last layout. |
| * If an ancestor does not have a layout, skip it. |
| * <p> |
| * Note: Layout is different from painting. If a child is |
| * moved or resized such that an area in the parent is |
| * exposed, then the parent will paint. If no child is |
| * affected, the parent will not paint. |
| * </p> |
| * |
| * @param changed a control that has had a state change which requires a recalculation of its size |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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 3.1 |
| */ |
| public void layout (Control [] changed) { |
| checkWidget (); |
| if (changed == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| layout (changed, SWT.NONE); |
| } |
| |
| /** |
| * Forces a lay out (that is, sets the size and location) of all widgets that |
| * are in the parent hierarchy of the changed control up to and including the |
| * receiver. |
| * <p> |
| * The parameter <code>flags</code> may be a combination of: |
| * <dl> |
| * <dt><b>SWT.ALL</b></dt> |
| * <dd>all children in the receiver's widget tree should be laid out</dd> |
| * <dt><b>SWT.CHANGED</b></dt> |
| * <dd>the layout must flush its caches</dd> |
| * <dt><b>SWT.DEFER</b></dt> |
| * <dd>layout will be deferred</dd> |
| * </dl> |
| * </p> |
| * <p> |
| * When the <code>changed</code> array is specified, the flags <code>SWT.ALL</code> |
| * and <code>SWT.CHANGED</code> have no effect. In this case, the layouts in the |
| * hierarchy must not rely on any information cached about the changed control or |
| * any of its ancestors. The layout may (potentially) optimize the |
| * work it is doing by assuming that none of the peers of the changed |
| * control have changed state since the last layout. |
| * If an ancestor does not have a layout, skip it. |
| * </p> |
| * <p> |
| * When the <code>changed</code> array is not specified, the flag <code>SWT.ALL</code> |
| * indicates that the whole widget tree should be laid out. And the flag |
| * <code>SWT.CHANGED</code> indicates that the layouts should flush any cached |
| * information for all controls that are laid out. |
| * </p> |
| * <p> |
| * The <code>SWT.DEFER</code> flag always causes the layout to be deferred by |
| * calling <code>Composite.setLayoutDeferred(true)</code> and scheduling a call |
| * to <code>Composite.setLayoutDeferred(false)</code>, which will happen when |
| * appropriate (usually before the next event is handled). When this flag is set, |
| * the application should not call <code>Composite.setLayoutDeferred(boolean)</code>. |
| * </p> |
| * <p> |
| * Note: Layout is different from painting. If a child is |
| * moved or resized such that an area in the parent is |
| * exposed, then the parent will paint. If no child is |
| * affected, the parent will not paint. |
| * </p> |
| * |
| * @param changed a control that has had a state change which requires a recalculation of its size |
| * @param flags the flags specifying how the layout should happen |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if any of the controls in changed is null or has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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 void layout (Control [] changed, int flags) { |
| checkWidget (); |
| if (changed != null) { |
| for (int i=0; i<changed.length; i++) { |
| Control control = changed [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| boolean ancestor = false; |
| Composite composite = control.parent; |
| while (composite != null) { |
| ancestor = composite == this; |
| if (ancestor) break; |
| composite = composite.parent; |
| } |
| if (!ancestor) error (SWT.ERROR_INVALID_PARENT); |
| } |
| int updateCount = 0; |
| Composite [] update = new Composite [16]; |
| for (int i=0; i<changed.length; i++) { |
| Control child = changed [i]; |
| Composite composite = child.parent; |
| while (child != this) { |
| if (composite.layout != null) { |
| composite.state |= LAYOUT_NEEDED; |
| if (!composite.layout.flushCache (child)) { |
| composite.state |= LAYOUT_CHANGED; |
| } |
| } |
| if (updateCount == update.length) { |
| Composite [] newUpdate = new Composite [update.length + 16]; |
| System.arraycopy (update, 0, newUpdate, 0, update.length); |
| update = newUpdate; |
| } |
| child = update [updateCount++] = composite; |
| composite = child.parent; |
| } |
| } |
| if ((flags & SWT.DEFER) != 0) { |
| setLayoutDeferred (true); |
| display.addLayoutDeferred (this); |
| } |
| for (int i=updateCount-1; i>=0; i--) { |
| update [i].updateLayout (false); |
| } |
| } else { |
| if (layout == null && (flags & SWT.ALL) == 0) return; |
| markLayout ((flags & SWT.CHANGED) != 0, (flags & SWT.ALL) != 0); |
| if ((flags & SWT.DEFER) != 0) { |
| setLayoutDeferred (true); |
| display.addLayoutDeferred (this); |
| } |
| updateLayout ((flags & SWT.ALL) != 0); |
| } |
| } |
| void manageChildren () { |
| if (focusHandle != 0) { |
| OS.XtSetMappedWhenManaged (focusHandle, false); |
| OS.XtManageChild (focusHandle); |
| } |
| super.manageChildren (); |
| if (focusHandle != 0) { |
| OS.XtConfigureWidget(focusHandle, 0, 0, 1, 1, 0); |
| OS.XtSetMappedWhenManaged (focusHandle, true); |
| } |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| Shell shell = getShell (); |
| shell.createFocusProxy (); |
| if (!OS.XtIsRealized (handle)) shell.realizeWidget (); |
| int xDisplay = OS.XtDisplay (handle); |
| OS.XSync (xDisplay, false); |
| embeddedHandle = OS.XtWindow (handle); |
| } |
| } |
| void markLayout (boolean changed, boolean all) { |
| if (layout != null) { |
| state |= LAYOUT_NEEDED; |
| if (changed) state |= LAYOUT_CHANGED; |
| } |
| if (all) { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].markLayout (changed, all); |
| } |
| } |
| } |
| Point minimumSize (int wHint, int hHint, boolean changed) { |
| Control [] children = _getChildren (); |
| Rectangle clientArea = getClientArea (); |
| int width = 0, height = 0; |
| for (int i=0; i<children.length; i++) { |
| Rectangle rect = children [i].getBounds (); |
| width = Math.max (width, rect.x - clientArea.x + rect.width); |
| height = Math.max (height, rect.y - clientArea.y + rect.height); |
| } |
| return new Point (width, height); |
| } |
| void moveAbove (int handle1, int handle2) { |
| if (handle1 == handle2) return; |
| int [] argList = {OS.XmNchildren, 0, OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int ptr = argList [1], count = argList [3]; |
| if (count == 0 || ptr == 0) return; |
| int [] handles = new int [count]; |
| OS.memmove (handles, ptr, count * 4); |
| if (handle2 == 0) handle2 = handles [0]; |
| int i = 0, index1 = -1, index2 = -1; |
| while (i < count) { |
| int handle = handles [i]; |
| if (handle == handle1) index1 = i; |
| if (handle == handle2) index2 = i; |
| if (index1 != -1 && index2 != -1) break; |
| i++; |
| } |
| if (index1 == -1 || index2 == -1) return; |
| if (index1 == index2) return; |
| if (index1 < index2) { |
| System.arraycopy (handles, index1 + 1, handles, index1, index2 - index1 - 1); |
| handles [index2 - 1] = handle1; |
| } else { |
| System.arraycopy (handles, index2, handles, index2 + 1, index1 - index2); |
| handles [index2] = handle1; |
| } |
| OS.memmove (ptr, handles, count * 4); |
| } |
| void moveBelow (int handle1, int handle2) { |
| if (handle1 == handle2) return; |
| int [] argList = {OS.XmNchildren, 0, OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int ptr = argList [1], count = argList [3]; |
| if (count == 0 || ptr == 0) return; |
| int [] handles = new int [count]; |
| OS.memmove (handles, ptr, count * 4); |
| if (handle2 == 0) handle2 = handles [count - 1]; |
| int i = 0, index1 = -1, index2 = -1; |
| while (i < count) { |
| int handle = handles [i]; |
| if (handle == handle1) index1 = i; |
| if (handle == handle2) index2 = i; |
| if (index1 != -1 && index2 != -1) break; |
| i++; |
| } |
| if (index1 == -1 || index2 == -1) return; |
| if (index1 == index2) return; |
| if (index1 < index2) { |
| System.arraycopy (handles, index1 + 1, handles, index1, index2 - index1); |
| handles [index2] = handle1; |
| } else { |
| System.arraycopy (handles, index2 + 1, handles, index2 + 2, index1 - index2 - 1); |
| handles [index2 + 1] = handle1; |
| } |
| OS.memmove (ptr, handles, count * 4); |
| } |
| void propagateChildren (boolean enabled) { |
| super.propagateChildren (enabled); |
| Control [] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| Control child = children [i]; |
| if (child.getEnabled ()) { |
| child.propagateChildren (enabled); |
| } |
| } |
| } |
| void realizeChildren () { |
| super.realizeChildren (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].realizeChildren (); |
| } |
| /* |
| * Feature in Motif. XmProcessTraversal() will not give focus to |
| * a widget that is obscured so the focus handle must be inside the |
| * client area of the parent. This means that it is visible as a |
| * single pixel widget in the parent. The fix is to unmap the |
| * focus handle so that it will be traversed by XmProcessTraversal() |
| * and will accept focus but will not be visible in the parent. |
| */ |
| if (focusHandle != 0) OS.XtUnmapWidget (focusHandle); |
| if ((state & CANVAS) != 0) { |
| if ((style & (SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND)) != 0 || (style & SWT.NO_REDRAW_RESIZE) == 0) { |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xWindow = OS.XtWindow (handle); |
| if (xWindow == 0) return; |
| int flags = 0; |
| XSetWindowAttributes attributes = new XSetWindowAttributes (); |
| if ((style & (SWT.NO_BACKGROUND | SWT.DOUBLE_BUFFERED)) != 0) { |
| flags |= OS.CWBackPixmap; |
| attributes.background_pixmap = OS.None; |
| } |
| if ((style & SWT.NO_REDRAW_RESIZE) == 0) { |
| flags |= OS.CWBitGravity; |
| attributes.bit_gravity = OS.ForgetGravity; |
| } |
| if (flags != 0) { |
| OS.XChangeWindowAttributes (xDisplay, xWindow, flags, attributes); |
| } |
| } |
| } |
| } |
| void redrawChildren () { |
| super.redrawChildren (); |
| Control [] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| Control child = children [i]; |
| if ((child.state & PARENT_BACKGROUND) != 0) { |
| child.redrawWidget (0, 0, 0, 0, true, false, true); |
| child.redrawChildren (); |
| } |
| } |
| } |
| void register () { |
| super.register (); |
| if (focusHandle != 0) display.addWidget (focusHandle, this); |
| } |
| void redrawWidget (int x, int y, int width, int height, boolean redrawAll, boolean allChildren, boolean trim) { |
| super.redrawWidget (x, y, width, height, redrawAll, allChildren, trim); |
| if (!allChildren) return; |
| Control [] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| Control child = children [i]; |
| Point location = child.getClientLocation (); |
| child.redrawWidget (x - location.x, y - location.y, width, height, redrawAll, allChildren, true); |
| } |
| } |
| void release (boolean destroy) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| Shell shell = getShell (); |
| int focusProc = display.focusProc; |
| OS.XtRemoveEventHandler (shell.shellHandle, OS.FocusChangeMask, false, focusProc, handle); |
| if (clientWindow != 0) { |
| boolean warnings = display.getWarnings (); |
| display.setWarnings (false); |
| int xDisplay = OS.XtDisplay (handle); |
| OS.XUnmapWindow (xDisplay, clientWindow); |
| OS.XReparentWindow (xDisplay, clientWindow, OS.XDefaultRootWindow (xDisplay), 0, 0); |
| OS.XSync (xDisplay, false); |
| display.setWarnings (warnings); |
| } |
| setClientWindow (0); |
| } |
| super.release (destroy); |
| } |
| void releaseChildren (boolean destroy) { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child != null && !child.isDisposed ()) { |
| child.release (false); |
| } |
| } |
| super.releaseChildren (destroy); |
| } |
| void releaseHandle () { |
| super.releaseHandle (); |
| focusHandle = embeddedHandle = 0; |
| } |
| void releaseWidget () { |
| super.releaseWidget (); |
| layout = null; |
| tabList = null; |
| if (damagedRegion != 0) OS.XDestroyRegion (damagedRegion); |
| damagedRegion = 0; |
| } |
| void removeControl (Control control) { |
| fixTabList (control); |
| } |
| void reskinChildren (int flags) { |
| super.reskinChildren (flags); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child != null) child.reskin (flags); |
| } |
| } |
| void resizeClientWindow () { |
| if (clientWindow == 0) return; |
| boolean warnings = display.getWarnings (); |
| display.setWarnings (false); |
| int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int xDisplay = OS.XtDisplay (handle); |
| OS.XMoveResizeWindow (xDisplay, clientWindow, 0, 0, Math.max(1, argList [1]), Math.max(1, argList [3])); |
| display.setWarnings (warnings); |
| } |
| void sendClientEvent (int time, int message, int detail, int data1, int data2) { |
| if (clientWindow == 0) return; |
| boolean warnings = display.getWarnings (); |
| display.setWarnings (false); |
| int xDisplay = OS.XtDisplay (handle); |
| XClientMessageEvent xEvent = new XClientMessageEvent (); |
| xEvent.type = OS.ClientMessage; |
| xEvent.window = clientWindow; |
| xEvent.message_type = OS.XInternAtom (xDisplay, _XEMBED, false); |
| xEvent.format = 32; |
| xEvent.data [0] = time != 0 ? time : OS.XtLastTimestampProcessed (xDisplay); |
| xEvent.data [1] = message; |
| xEvent.data [2] = detail; |
| xEvent.data [3] = data1; |
| xEvent.data [4] = data2; |
| int event = OS.XtMalloc (XEvent.sizeof); |
| OS.memmove (event, xEvent, XClientMessageEvent.sizeof); |
| OS.XSendEvent (xDisplay, clientWindow, false, 0, event); |
| OS.XSync (xDisplay, false); |
| OS.XtFree (event); |
| display.setWarnings (warnings); |
| } |
| /** |
| * Sets the background drawing mode to the argument which should |
| * be one of the following constants defined in class <code>SWT</code>: |
| * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>, |
| * <code>INHERIT_FORCE</code>. |
| * |
| * @param mode the new background mode |
| * |
| * @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 SWT |
| * |
| * @since 3.2 |
| */ |
| public void setBackgroundMode (int mode) { |
| checkWidget (); |
| backgroundMode = mode; |
| Control[] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| children [i].updateBackgroundMode (); |
| } |
| } |
| void setBackgroundPixel (int pixel) { |
| super.setBackgroundPixel (pixel); |
| if ((state & CANVAS) != 0) { |
| if ((style & (SWT.NO_BACKGROUND | SWT.DOUBLE_BUFFERED)) != 0) { |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xWindow = OS.XtWindow (handle); |
| if (xWindow == 0) return; |
| XSetWindowAttributes attributes = new XSetWindowAttributes (); |
| attributes.background_pixmap = OS.None; |
| OS.XChangeWindowAttributes (xDisplay, xWindow, OS.CWBackPixmap, attributes); |
| } |
| } |
| } |
| boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) { |
| boolean changed = super.setBounds (x, y, width, height, move, resize); |
| if (changed && resize) { |
| if (focusHandle != 0) { |
| int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| OS.XtConfigureWidget (focusHandle, 0, 0, argList [1], argList [3], 0); |
| } |
| if (layout != null) { |
| markLayout (false, false); |
| updateLayout (false); |
| } |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| resizeClientWindow (); |
| } |
| } |
| return changed; |
| } |
| void setClientWindow (int window) { |
| if (focusHandle != 0) { |
| if (window == OS.XtWindow (focusHandle)) return; |
| } |
| boolean warnings = display.getWarnings (); |
| display.setWarnings (false); |
| int xDisplay = OS.XtDisplay (handle); |
| if (window != 0) { |
| if (clientWindow == 0) { |
| clientWindow = window; |
| sendClientEvent (0, OS.XEMBED_EMBEDDED_NOTIFY, 0, 0, 0); |
| OS.XtRegisterDrawable (xDisplay, clientWindow, handle); |
| OS.XSelectInput (xDisplay, clientWindow, OS.PropertyChangeMask); |
| updateMapped (); |
| resizeClientWindow (); |
| Shell shell = getShell (); |
| if (shell == display.getActiveShell ()) { |
| shell.bringToTop (true); |
| sendClientEvent (0, OS.XEMBED_WINDOW_ACTIVATE, 0, 0, 0); |
| if (this == display.getFocusControl ()) { |
| sendClientEvent (0, OS.XEMBED_FOCUS_IN, OS.XEMBED_FOCUS_CURRENT, 0, 0); |
| } |
| } |
| } |
| } else { |
| if (clientWindow != 0) OS.XtUnregisterDrawable (xDisplay, clientWindow); |
| clientWindow = 0; |
| } |
| display.setWarnings (warnings); |
| } |
| public boolean setFocus () { |
| checkWidget (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.setFocus ()) return true; |
| } |
| return super.setFocus (); |
| } |
| public void setFont (Font font) { |
| checkWidget(); |
| super.setFont (font); |
| if ((state & CANVAS) != 0) { |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xWindow = OS.XtWindow (handle); |
| if (xWindow == 0) return; |
| OS.XClearArea (xDisplay, xWindow, 0, 0, 0, 0, true); |
| } |
| } |
| void setForegroundPixel (int pixel) { |
| super.setForegroundPixel (pixel); |
| if ((state & CANVAS) != 0) { |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xWindow = OS.XtWindow (handle); |
| if (xWindow == 0) return; |
| OS.XClearArea (xDisplay, xWindow, 0, 0, 0, 0, true); |
| } |
| } |
| /** |
| * Sets the layout which is associated with the receiver to be |
| * the argument which may be null. |
| * |
| * @param layout the receiver's new layout 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 setLayout (Layout layout) { |
| checkWidget(); |
| this.layout = layout; |
| } |
| /** |
| * If the argument is <code>true</code>, causes subsequent layout |
| * operations in the receiver or any of its children to be ignored. |
| * No layout of any kind can occur in the receiver or any of its |
| * children until the flag is set to false. |
| * Layout operations that occurred while the flag was |
| * <code>true</code> are remembered and when the flag is set to |
| * <code>false</code>, the layout operations are performed in an |
| * optimized manner. Nested calls to this method are stacked. |
| * |
| * @param defer the new defer 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 #layout(boolean) |
| * @see #layout(Control[]) |
| * |
| * @since 3.1 |
| */ |
| public void setLayoutDeferred (boolean defer) { |
| checkWidget(); |
| if (!defer) { |
| if (--layoutCount == 0) { |
| if ((state & LAYOUT_CHILD) != 0 || (state & LAYOUT_NEEDED) != 0) { |
| updateLayout (true); |
| } |
| } |
| } else { |
| layoutCount++; |
| } |
| } |
| /** |
| * Sets the tabbing order for the specified controls to |
| * match the order that they occur in the argument list. |
| * |
| * @param tabList the ordered list of controls representing the tab order or null |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if a widget in the tabList is null or has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if widget in the tabList is not in the same widget tree</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 setTabList (Control [] tabList) { |
| checkWidget (); |
| if (tabList != null) { |
| for (int i=0; i<tabList.length; i++) { |
| Control control = tabList [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.parent != this) error (SWT.ERROR_INVALID_PARENT); |
| } |
| Control [] newList = new Control [tabList.length]; |
| System.arraycopy (tabList, 0, newList, 0, tabList.length); |
| tabList = newList; |
| } |
| this.tabList = tabList; |
| } |
| void setParentBackground () { |
| super.setParentBackground (); |
| if (scrolledHandle != 0) setParentBackground (scrolledHandle); |
| if (formHandle != 0) setParentBackground (formHandle); |
| } |
| boolean setScrollBarVisible (ScrollBar bar, boolean visible) { |
| boolean changed = super.setScrollBarVisible (bar, visible); |
| if (changed && layout != null) { |
| markLayout (false, false); |
| updateLayout (false); |
| } |
| return changed; |
| } |
| boolean setTabGroupFocus (boolean next) { |
| if (isTabItem ()) return setTabItemFocus (next); |
| boolean takeFocus = (style & SWT.NO_FOCUS) == 0; |
| if ((state & CANVAS) != 0) { |
| takeFocus = hooksKeys (); |
| if ((style & SWT.EMBEDDED) != 0) takeFocus = true; |
| } |
| if (takeFocus && setTabItemFocus (next)) return true; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.isTabItem () && child.setTabItemFocus (next)) return true; |
| } |
| return false; |
| } |
| boolean setTabItemFocus (boolean next) { |
| if (!super.setTabItemFocus (next)) return false; |
| if (handle != 0) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| int detail = next ? OS.XEMBED_FOCUS_FIRST : OS.XEMBED_FOCUS_LAST; |
| sendClientEvent (0, OS.XEMBED_FOCUS_IN, detail, 0, 0); |
| } |
| } |
| return true; |
| } |
| int traversalCode (int key, XKeyEvent xEvent) { |
| if ((state & CANVAS) != 0) { |
| if ((style & SWT.NO_FOCUS) != 0) return 0; |
| if (hooksKeys ()) return 0; |
| } |
| return super.traversalCode (key, xEvent); |
| } |
| boolean translateMnemonic (Event event, Control control) { |
| if (super.translateMnemonic (event, control)) return true; |
| if (control != null) { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.translateMnemonic (event, control)) return true; |
| } |
| } |
| return false; |
| } |
| boolean translateTraversal (int key, XKeyEvent xEvent) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) return false; |
| return super.translateTraversal (key, xEvent); |
| } |
| void updateBackgroundMode () { |
| super.updateBackgroundMode (); |
| Control [] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| children [i].updateBackgroundMode (); |
| } |
| } |
| void updateLayout (boolean all) { |
| Composite parent = findDeferredControl (); |
| if (parent != null) { |
| parent.state |= LAYOUT_CHILD; |
| return; |
| } |
| if ((state & LAYOUT_NEEDED) != 0) { |
| boolean changed = (state & LAYOUT_CHANGED) != 0; |
| state &= ~(LAYOUT_NEEDED | LAYOUT_CHANGED); |
| display.runSkin(); |
| layout.layout (this, changed); |
| } |
| if (all) { |
| state &= ~LAYOUT_CHILD; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].updateLayout (all); |
| } |
| } |
| } |
| int XButtonPress (int w, int client_data, int call_data, int continue_to_dispatch) { |
| int result = super.XButtonPress (w, client_data, call_data, continue_to_dispatch); |
| if (result != 0) return result; |
| |
| /* Set focus for a canvas with no children */ |
| if ((state & CANVAS) != 0) { |
| XButtonEvent xEvent = new XButtonEvent (); |
| OS.memmove (xEvent, call_data, XButtonEvent.sizeof); |
| if ((style & SWT.NO_FOCUS) == 0 && hooksKeys ()) { |
| if (xEvent.button == 1) { |
| if (getChildrenCount () == 0) setFocus (); |
| } |
| } |
| /* |
| * Bug in Motif. On Solaris 8 only, stopping the other event |
| * handlers from being invoked after a menu has been displayed |
| * causes a segment fault. The fix is to not stop the event for |
| * button 3. |
| */ |
| if (xEvent.button != 3) { |
| OS.memmove (continue_to_dispatch, new int [1], 4); |
| } |
| return 1; |
| } |
| return result; |
| } |
| int XExposure (int w, int client_data, int call_data, int continue_to_dispatch) { |
| if ((state & CANVAS) == 0) { |
| return super.XExposure (w, client_data, call_data, continue_to_dispatch); |
| } |
| if (!hooks (SWT.Paint) && !filters (SWT.Paint)) return 0; |
| if (damagedRegion == 0) damagedRegion = OS.XCreateRegion (); |
| OS.XtAddExposureToRegion (call_data, damagedRegion); |
| if ((style & SWT.NO_MERGE_PAINTS) == 0) { |
| XExposeEvent xEvent = new XExposeEvent (); |
| OS.memmove (xEvent, call_data, XExposeEvent.sizeof); |
| int exposeCount = xEvent.count; |
| if (exposeCount == 0) { |
| if (OS.XEventsQueued (xEvent.display, OS.QueuedAfterReading) != 0) { |
| int xEvent1 = OS.XtMalloc (XEvent.sizeof); |
| display.exposeCount = display.lastExpose = 0; |
| int checkExposeProc = display.checkExposeProc; |
| OS.XCheckIfEvent (xEvent.display, xEvent1, checkExposeProc, xEvent.window); |
| exposeCount = display.exposeCount; |
| int lastExpose = display.lastExpose; |
| if (exposeCount != 0 && lastExpose != 0) { |
| XExposeEvent xExposeEvent = display.xExposeEvent; |
| OS.memmove (xExposeEvent, lastExpose, XExposeEvent.sizeof); |
| xExposeEvent.count = 0; |
| OS.memmove (lastExpose, xExposeEvent, XExposeEvent.sizeof); |
| } |
| OS.XtFree (xEvent1); |
| } |
| } |
| if (exposeCount != 0) return 0; |
| } |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return 0; |
| int damageRgn = damagedRegion; |
| damagedRegion = 0; |
| GCData data = new GCData (); |
| data.damageRgn = damageRgn; |
| GC gc = GC.motif_new (this, data); |
| OS.XSetRegion (xDisplay, gc.handle, damageRgn); |
| XRectangle rect = new XRectangle (); |
| OS.XClipBox (damageRgn, rect); |
| GC paintGC = null; |
| Image image = null; |
| if ((style & SWT.DOUBLE_BUFFERED) != 0) { |
| Rectangle client = _getClientArea (); |
| int width = Math.max (1, Math.min (client.width, rect.x + rect.width)); |
| int height = Math.max (1, Math.min (client.height, rect.y + rect.height)); |
| image = new Image (display, width, height); |
| paintGC = gc; |
| GCData imageGCData = new GCData (); |
| imageGCData.damageRgn = damageRgn; |
| gc = GC.motif_new (image, imageGCData); |
| gc.setForeground (getForeground ()); |
| gc.setBackground (getBackground ()); |
| gc.setFont (getFont ()); |
| if ((style & SWT.NO_BACKGROUND) != 0) { |
| /* This code is intentionaly commented because it is too slow to copy bits from the screen */ |
| // paintGC.copyArea(image, 0, 0); |
| } else { |
| drawBackground (gc, 0, 0, width, height, 0, 0); |
| } |
| } |
| Event event = new Event (); |
| event.x = rect.x; |
| event.y = rect.y; |
| event.width = rect.width; |
| event.height = rect.height; |
| event.gc = gc; |
| sendEvent (SWT.Paint, event); |
| event.gc = null; |
| if ((style & SWT.DOUBLE_BUFFERED) != 0) { |
| gc.dispose (); |
| if (!isDisposed ()) { |
| paintGC.drawImage (image, 0, 0); |
| } |
| image.dispose (); |
| gc = paintGC; |
| } |
| gc.dispose (); |
| OS.XDestroyRegion (damageRgn); |
| return 0; |
| } |
| int xFocusIn (XFocusChangeEvent xEvent) { |
| int result = super.xFocusIn (xEvent); |
| if (handle != 0) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| sendClientEvent (0, OS.XEMBED_FOCUS_IN, OS.XEMBED_FOCUS_CURRENT, 0, 0); |
| } |
| } |
| return result; |
| } |
| int xFocusOut (XFocusChangeEvent xEvent) { |
| int result = super.xFocusOut (xEvent); |
| if (handle != 0) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| sendClientEvent (0, OS.XEMBED_FOCUS_OUT, 0, 0, 0); |
| } |
| } |
| return result; |
| } |
| int XKeyPress (int w, int client_data, int call_data, int continue_to_dispatch) { |
| int result = super.XKeyPress (w, client_data, call_data, continue_to_dispatch); |
| if (result == 0) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| if (fowardKeyEvent (call_data)) return 0; |
| } |
| } |
| return result; |
| } |
| int XKeyRelease (int w, int client_data, int call_data, int continue_to_dispatch) { |
| int result = super.XKeyRelease (w, client_data, call_data, continue_to_dispatch); |
| if (result == 0) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| if (fowardKeyEvent (call_data)) return 0; |
| } |
| } |
| return result; |
| } |
| int XNonMaskable (int w, int client_data, int call_data, int continue_to_dispatch) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| XEvent xEvent = new XEvent (); |
| OS.memmove (xEvent, call_data, XEvent.sizeof); |
| if (xEvent.type == OS.ClientMessage) { |
| XClientMessageEvent xClientEvent = new XClientMessageEvent (); |
| OS.memmove (xClientEvent, call_data, XClientMessageEvent.sizeof); |
| int xDisplay = OS.XtDisplay (handle); |
| if (xClientEvent.message_type == OS.XInternAtom (xDisplay, _XEMBED, false)) { |
| int type = xClientEvent.data [1]; |
| switch (type) { |
| case OS.XEMBED_REQUEST_FOCUS: { |
| setFocus (); |
| break; |
| } |
| case OS.XEMBED_FOCUS_PREV: { |
| traverse (SWT.TRAVERSE_TAB_PREVIOUS); |
| break; |
| } |
| case OS.XEMBED_FOCUS_NEXT: { |
| traverse (SWT.TRAVERSE_TAB_NEXT); |
| break; |
| } |
| } |
| } |
| return 0; |
| } |
| } |
| if ((state & CANVAS) != 0) { |
| XEvent xEvent = new XEvent (); |
| OS.memmove (xEvent, call_data, XEvent.sizeof); |
| if (xEvent.type == OS.GraphicsExpose) { |
| return XExposure (w, client_data, call_data, continue_to_dispatch); |
| } |
| } |
| return 0; |
| } |
| int XPropertyChange (int w, int client_data, int call_data, int continue_to_dispatch) { |
| int result = super.XPropertyChange (w, client_data, call_data, continue_to_dispatch); |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| XPropertyEvent xPropertyEvent = new XPropertyEvent (); |
| OS.memmove(xPropertyEvent, call_data, XPropertyEvent.sizeof); |
| if (xPropertyEvent.window == clientWindow) { |
| int atom = xPropertyEvent.atom; |
| int xDisplay = xPropertyEvent.display; |
| if (atom == OS.XInternAtom (xDisplay, _XEMBED_INFO, false)) { |
| updateMapped (); |
| } |
| } |
| } |
| return result; |
| } |
| int XStructureNotify (int w, int client_data, int call_data, int continue_to_dispatch) { |
| int result = super.XStructureNotify (w, client_data, call_data, continue_to_dispatch); |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| XEvent xEvent = new XEvent (); |
| OS.memmove (xEvent, call_data, XEvent.sizeof); |
| switch (xEvent.type) { |
| case OS.ReparentNotify: { |
| XReparentEvent xReparentEvent = new XReparentEvent (); |
| OS.memmove (xReparentEvent, call_data, XReparentEvent.sizeof); |
| if (clientWindow == 0) setClientWindow (xReparentEvent.window); |
| break; |
| } |
| case OS.CreateNotify: { |
| XCreateWindowEvent xCreateEvent = new XCreateWindowEvent (); |
| OS.memmove (xCreateEvent, call_data, XCreateWindowEvent.sizeof); |
| if (clientWindow == 0) setClientWindow (xCreateEvent.window); |
| break; |
| } |
| case OS.DestroyNotify: { |
| XDestroyWindowEvent xDestroyEvent = new XDestroyWindowEvent (); |
| OS.memmove (xDestroyEvent, call_data, XDestroyWindowEvent.sizeof); |
| if (xDestroyEvent.window == clientWindow) setClientWindow (0); |
| break; |
| } |
| case OS.ConfigureNotify: { |
| XConfigureEvent xConfigureEvent = new XConfigureEvent (); |
| OS.memmove (xConfigureEvent, call_data, XConfigureEvent.sizeof); |
| if (xConfigureEvent.window == clientWindow) resizeClientWindow (); |
| break; |
| } |
| } |
| } |
| return result; |
| } |
| void updateMapped () { |
| if (clientWindow == 0) return; |
| boolean warnings = display.getWarnings (); |
| display.setWarnings (false); |
| int xDisplay = OS.XtDisplay (handle); |
| int prop = OS.XInternAtom (xDisplay, _XEMBED_INFO, false); |
| int [] type = new int [1], format = new int [1]; |
| int [] nitems = new int [1], bytes_after = new int [1], data = new int [1]; |
| if (OS.XGetWindowProperty (xDisplay, clientWindow, prop, 0, 2, false, prop, type, format, nitems, bytes_after, data) == 0) { |
| if (type [0] == prop) { |
| if (nitems [0] >= 2) { |
| int [] buffer = new int [2]; |
| OS.memmove (buffer, data [0], buffer.length * 4); |
| int flags = buffer [1]; |
| if ((flags & OS.XEMBED_MAPPED) != 0) { |
| OS.XMapWindow (xDisplay, clientWindow); |
| } else { |
| OS.XUnmapWindow (xDisplay, clientWindow); |
| } |
| } |
| } |
| } |
| if (data [0] != 0) OS.XFree (data [0]); |
| display.setWarnings (warnings); |
| } |
| } |