| /******************************************************************************* |
| * Copyright (c) 2000, 2020 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| |
| /** |
| * Instances of this class represent a selectable user interface object that |
| * issues notification when pressed and released. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT, WRAP</dd> |
| * <dd>UP, DOWN, LEFT, RIGHT, CENTER</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles ARROW, CHECK, PUSH, RADIO, and TOGGLE |
| * may be specified. |
| * </p><p> |
| * Note: Only one of the styles LEFT, RIGHT, and CENTER may be specified. |
| * </p><p> |
| * Note: Only one of the styles UP, DOWN, LEFT, and RIGHT may be specified |
| * when the ARROW style is specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#button">Button 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 class Button extends Control { |
| long boxHandle, labelHandle, imageHandle, arrowHandle, groupHandle; |
| boolean selected, grayed; |
| /** True iff this toggle button requires special theme handling. See bug 546552.*/ |
| boolean toggleButtonTheming; |
| ImageList imageList; |
| Image image; |
| String text; |
| GdkRGBA background; |
| |
| static final int INNER_BORDER = 1; |
| static final int DEFAULT_BORDER = 1; |
| |
| /** |
| * 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#ARROW |
| * @see SWT#CHECK |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#TOGGLE |
| * @see SWT#FLAT |
| * @see SWT#UP |
| * @see SWT#DOWN |
| * @see SWT#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#CENTER |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Button (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| style = checkBits (style, SWT.PUSH, SWT.ARROW, SWT.CHECK, SWT.RADIO, SWT.TOGGLE, 0); |
| if ((style & (SWT.PUSH | SWT.TOGGLE)) != 0) { |
| return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0); |
| } |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0); |
| } |
| if ((style & SWT.ARROW) != 0) { |
| style |= SWT.NO_FOCUS; |
| return checkBits (style, SWT.UP, SWT.DOWN, SWT.LEFT, SWT.RIGHT, 0, 0); |
| } |
| return style; |
| } |
| |
| GtkBorder getBorder (byte[] border, long handle, int defaultBorder) { |
| GtkBorder gtkBorder = new GtkBorder(); |
| long [] borderPtr = new long [1]; |
| if (GTK.GTK4) { |
| long context = GTK.gtk_widget_get_style_context (handle); |
| int stateFlag = GTK.gtk_widget_get_state_flags(handle); |
| gtk_style_context_get_border(context, stateFlag, gtkBorder); |
| return gtkBorder; |
| } else { |
| GTK.gtk_widget_style_get (handle, border, borderPtr,0); |
| if (borderPtr[0] != 0) { |
| OS.memmove (gtkBorder, borderPtr[0], GtkBorder.sizeof); |
| GTK.gtk_border_free(borderPtr[0]); |
| return gtkBorder; |
| } |
| } |
| gtkBorder.left = defaultBorder; |
| gtkBorder.top = defaultBorder; |
| gtkBorder.right = defaultBorder; |
| gtkBorder.bottom = defaultBorder; |
| return gtkBorder; |
| } |
| |
| @Override |
| GdkRGBA getContextBackgroundGdkRGBA () { |
| if (background != null && (state & BACKGROUND) != 0) { |
| return background; |
| } |
| return defaultBackground(); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the control is selected by the user, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the control is selected by the user. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * <p> |
| * When the <code>SWT.RADIO</code> style bit is set, the <code>widgetSelected</code> method is |
| * also called when the receiver loses selection because another item in the same radio group |
| * was selected by the user. During <code>widgetSelected</code> the application can use |
| * <code>getSelection()</code> to determine the current selected state of the receiver. |
| * </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 SelectionListener |
| * @see #removeSelectionListener |
| * @see SelectionEvent |
| */ |
| public void addSelectionListener (SelectionListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Selection,typedListener); |
| addListener (SWT.DefaultSelection,typedListener); |
| } |
| |
| @Override |
| Point computeSizeInPixels (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0; |
| if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0; |
| /* |
| * Feature in GTK, GtkCheckButton and GtkRadioButton allocate |
| * only the minimum size necessary for its child. This causes the child |
| * alignment to fail. The fix is to set the child size to the size |
| * of the button. |
| */ |
| forceResize (); |
| int [] reqWidth = null, reqHeight = null; |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| reqWidth = new int [1]; |
| reqHeight = new int [1]; |
| GTK.gtk_widget_get_size_request (boxHandle, reqWidth, reqHeight); |
| GTK.gtk_widget_set_size_request (boxHandle, -1, -1); |
| } |
| Point size; |
| boolean wrap = labelHandle != 0 && (style & SWT.WRAP) != 0 && GTK.gtk_widget_get_visible (labelHandle); |
| if (wrap) { |
| int borderWidth = gtk_container_get_border_width_or_margin (handle); |
| int trimWidth, trimHeight; |
| if (!GTK.GTK4) { |
| int[] focusWidth = new int[1]; |
| GTK.gtk_widget_style_get (handle, OS.focus_line_width, focusWidth, 0); |
| int[] focusPadding = new int[1]; |
| GTK.gtk_widget_style_get (handle, OS.focus_padding, focusPadding, 0); |
| trimWidth = 2 * (borderWidth + focusWidth [0] + focusPadding [0]); |
| } else { |
| trimWidth = 2 * borderWidth; |
| } |
| trimHeight = trimWidth; |
| int indicatorHeight = 0; |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| if (GTK.GTK4) { |
| long icon = GTK.gtk_widget_get_first_child(handle); |
| GtkRequisition minimum = new GtkRequisition (); |
| GTK.gtk_widget_get_preferred_size(icon, minimum, null); |
| long context = GTK.gtk_widget_get_style_context(icon); |
| GtkBorder margin = new GtkBorder (); |
| GTK.gtk_style_context_get_margin(context, margin); |
| trimWidth += minimum.width + margin.right; |
| } else { |
| int[] indicatorSize = new int[1]; |
| int[] indicatorSpacing = new int[1]; |
| GTK.gtk_widget_style_get (handle, OS.indicator_size, indicatorSize, 0); |
| GTK.gtk_widget_style_get (handle, OS.indicator_spacing, indicatorSpacing, 0); |
| indicatorHeight = indicatorSize [0] + 2 * indicatorSpacing [0]; |
| trimWidth += indicatorHeight + indicatorSpacing [0]; |
| } |
| } else { |
| Point thickness = getThickness (handle); |
| trimWidth += thickness.x * 2; |
| trimHeight += thickness.y * 2; |
| GtkBorder innerBorder = getBorder (OS.inner_border, handle, INNER_BORDER); |
| trimWidth += innerBorder.left + innerBorder.right; |
| trimHeight += innerBorder.top + innerBorder.bottom; |
| if (GTK.gtk_widget_get_can_default (handle)) { |
| GtkBorder defaultBorder = getBorder (OS.default_border, handle, DEFAULT_BORDER); |
| trimWidth += defaultBorder.left + defaultBorder.right; |
| trimHeight += defaultBorder.top + defaultBorder.bottom; |
| } |
| } |
| int imageWidth = 0, imageHeight = 0; |
| if (GTK.gtk_widget_get_visible (imageHandle)) { |
| GtkRequisition requisition = new GtkRequisition (); |
| gtk_widget_get_preferred_size (imageHandle, requisition); |
| imageWidth = requisition.width; |
| imageHeight = requisition.height; |
| int [] spacing = new int [1]; |
| OS.g_object_get (boxHandle, OS.spacing, spacing, 0); |
| imageWidth += spacing [0]; |
| } |
| long labelLayout = GTK.gtk_label_get_layout (labelHandle); |
| int pangoWidth = OS.pango_layout_get_width (labelLayout); |
| if (wHint != SWT.DEFAULT) { |
| OS.pango_layout_set_width (labelLayout, Math.max (1, (wHint - imageWidth - trimWidth)) * OS.PANGO_SCALE); |
| } else { |
| OS.pango_layout_set_width (labelLayout, -1); |
| } |
| int [] w = new int [1], h = new int [1]; |
| OS.pango_layout_get_pixel_size (labelLayout, w, h); |
| OS.pango_layout_set_width (labelLayout, pangoWidth); |
| size = new Point(0, 0); |
| size.x += wHint == SWT.DEFAULT ? w [0] + imageWidth + trimWidth : wHint; |
| size.y += hHint == SWT.DEFAULT ? Math.max(Math.max(imageHeight, indicatorHeight), h [0]) + trimHeight : hHint; |
| } else { |
| size = computeNativeSize (handle, wHint, hHint, changed); |
| } |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| GTK.gtk_widget_set_size_request (boxHandle, reqWidth [0], reqHeight [0]); |
| } |
| if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) { |
| if (GTK.gtk_widget_get_can_default (handle)) { |
| GtkBorder border = getBorder (OS.default_border, handle, DEFAULT_BORDER); |
| if (wHint != SWT.DEFAULT) size.x += border.left + border.right; |
| if (hHint != SWT.DEFAULT) size.y += border.top + border.bottom; |
| } |
| } |
| return size; |
| } |
| |
| @Override |
| void createHandle (int index) { |
| state |= HANDLE; |
| if ((style & (SWT.PUSH | SWT.TOGGLE)) == 0) state |= THEME_BACKGROUND; |
| int bits = SWT.ARROW | SWT.TOGGLE | SWT.CHECK | SWT.RADIO | SWT.PUSH; |
| fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0); |
| if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| gtk_widget_set_has_surface_or_window (fixedHandle, true); |
| switch (style & bits) { |
| case SWT.ARROW: |
| byte arrowType [] = GTK.GTK_NAMED_ICON_GO_UP; |
| if ((style & SWT.UP) != 0) arrowType = GTK.GTK_NAMED_ICON_GO_UP; |
| if ((style & SWT.DOWN) != 0) arrowType = GTK.GTK_NAMED_ICON_GO_DOWN; |
| if ((style & SWT.LEFT) != 0) arrowType = GTK.GTK_NAMED_ICON_GO_PREVIOUS; |
| if ((style & SWT.RIGHT) != 0) arrowType = GTK.GTK_NAMED_ICON_GO_NEXT; |
| arrowHandle = GTK.gtk_image_new_from_icon_name (arrowType, GTK.GTK_ICON_SIZE_MENU); |
| if (arrowHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| |
| handle = GTK.gtk_button_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| break; |
| case SWT.TOGGLE: |
| handle = GTK.gtk_toggle_button_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| if (Display.themeName != null) { |
| toggleButtonTheming = (GTK.GTK_VERSION >= OS.VERSION(3, 24, 11) && Display.themeName.contains("Adwaita")) |
| || Display.themeName.contains("Yaru"); |
| } |
| break; |
| case SWT.CHECK: |
| handle = GTK.gtk_check_button_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| if (Display.themeName != null) { |
| toggleButtonTheming = (GTK.GTK_VERSION >= OS.VERSION(3, 24, 11) && Display.themeName.contains("Adwaita")) |
| || Display.themeName.contains("Yaru"); |
| } |
| break; |
| case SWT.RADIO: |
| /* |
| * Feature in GTK. In GTK, radio button must always be part of |
| * a radio button group. In a GTK radio group, one button is always |
| * selected. This means that it is not possible to have a single |
| * radio button that is unselected. This is necessary to allow |
| * applications to implement their own radio behavior or use radio |
| * buttons outside of radio groups. The fix is to create a hidden |
| * radio button for each radio button we create and add them |
| * to the same group. This allows the visible button to be |
| * unselected. |
| */ |
| groupHandle = GTK.gtk_radio_button_new (0); |
| if (groupHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.g_object_ref_sink (groupHandle); |
| handle = GTK.gtk_radio_button_new (GTK.gtk_radio_button_get_group (groupHandle)); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| if (Display.themeName != null) { |
| toggleButtonTheming = (GTK.GTK_VERSION >= OS.VERSION(3, 24, 11) && Display.themeName.contains("Adwaita")) |
| || Display.themeName.contains("Yaru"); |
| } |
| break; |
| case SWT.PUSH: |
| default: |
| handle = GTK.gtk_button_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| GTK.gtk_widget_set_can_default (handle, true); |
| break; |
| } |
| if ((style & SWT.ARROW) != 0) { |
| // Use gtk_button_set_image() on GTK3 to prevent icons from being |
| // trimmed with smaller sized buttons; see bug 528284. |
| GTK.gtk_button_set_image(handle, arrowHandle); |
| } else { |
| boxHandle = gtk_box_new (GTK.GTK_ORIENTATION_HORIZONTAL, false, 4); |
| if (boxHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| labelHandle = GTK.gtk_label_new_with_mnemonic (null); |
| if (labelHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| imageHandle = GTK.gtk_image_new (); |
| if (imageHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| GTK.gtk_container_add (handle, boxHandle); |
| GTK.gtk_container_add (boxHandle, imageHandle); |
| GTK.gtk_container_add (boxHandle, labelHandle); |
| if ((style & SWT.WRAP) != 0) { |
| GTK.gtk_label_set_line_wrap (labelHandle, true); |
| GTK.gtk_label_set_line_wrap_mode (labelHandle, OS.PANGO_WRAP_WORD_CHAR); |
| } |
| } |
| GTK.gtk_container_add (fixedHandle, handle); |
| |
| if ((style & SWT.ARROW) != 0) return; |
| // In GTK 3 font description is inherited from parent widget which is not how SWT has always worked, |
| // reset to default font to get the usual behavior |
| setFontDescription(defaultFont().handle); |
| _setAlignment (style & (SWT.LEFT | SWT.CENTER | SWT.RIGHT)); |
| } |
| |
| @Override |
| void createWidget (int index) { |
| super.createWidget (index); |
| text = ""; |
| } |
| |
| @Override |
| void checkBackground() { |
| /* |
| * Feature in GTK: some toggle style (check, radio, and toggle) buttons |
| * have inverted colors, meaning the background color when checked is |
| * a dark color (like blue or green), and the checkmark/indicator is |
| * white. To complicate matters, this background area is an image, and |
| * overriding this with a color causes the checkmark to be invisible. |
| * The new (GTK3 >= 3.24.11) Adwaita theme is affected, as well as the |
| * default Yaru theme on Ubuntu. |
| * |
| * Part of the fix is to not inherit the parents background. See bug 553657. |
| */ |
| if (toggleButtonTheming && (style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| state &= ~PARENT_BACKGROUND; |
| } else { |
| super.checkBackground(); |
| } |
| } |
| |
| @Override |
| void deregister () { |
| super.deregister (); |
| if (boxHandle != 0) display.removeWidget (boxHandle); |
| if (labelHandle != 0) display.removeWidget (labelHandle); |
| if (imageHandle != 0) display.removeWidget (imageHandle); |
| if (arrowHandle != 0) display.removeWidget (arrowHandle); |
| } |
| |
| @Override |
| long fontHandle () { |
| if (labelHandle != 0) return labelHandle; |
| return super.fontHandle (); |
| } |
| |
| /** |
| * Returns a value which describes the position of the |
| * text or image in the receiver. The value will be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is an <code>ARROW</code> button, in |
| * which case, the alignment will indicate the direction of |
| * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, |
| * <code>UP</code> or <code>DOWN</code>). |
| * |
| * @return the alignment |
| * |
| * @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 getAlignment () { |
| checkWidget (); |
| if ((style & SWT.ARROW) != 0) { |
| if ((style & SWT.UP) != 0) return SWT.UP; |
| if ((style & SWT.DOWN) != 0) return SWT.DOWN; |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.UP; |
| } |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.CENTER) != 0) return SWT.CENTER; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.LEFT; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is grayed, |
| * and false otherwise. When the widget does not have |
| * the <code>CHECK</code> style, return false. |
| * |
| * @return the grayed state of the checkbox |
| * |
| * @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 getGrayed () { |
| checkWidget(); |
| if ((style & SWT.CHECK) == 0) return false; |
| return grayed; |
| } |
| |
| /** |
| * Returns the receiver's image if it has one, or null |
| * if it does not. |
| * |
| * @return the receiver's 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> |
| */ |
| public Image getImage () { |
| checkWidget (); |
| return image; |
| } |
| |
| @Override |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is selected, |
| * and false otherwise. |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. When it is of type <code>TOGGLE</code>, |
| * it is selected when it is pushed in. If the receiver is of any other type, |
| * this method returns false. |
| * |
| * @return the selection 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 getSelection () { |
| checkWidget (); |
| if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return false; |
| return GTK.gtk_toggle_button_get_active (handle); |
| } |
| |
| /** |
| * Returns the receiver's text, which will be an empty |
| * string if it has never been set or if the receiver is |
| * an <code>ARROW</code> button. |
| * |
| * @return the receiver's 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 getText () { |
| checkWidget(); |
| if ((style & SWT.ARROW) != 0) return ""; |
| return text; |
| } |
| |
| @Override |
| long gtk_button_press_event (long widget, long event) { |
| long result = super.gtk_button_press_event (widget, event); |
| if (result != 0) return result; |
| if ((style & SWT.RADIO) != 0) selected = getSelection (); |
| return result; |
| } |
| |
| @Override |
| long gtk_clicked (long widget) { |
| if (containedInRegion(lastInput.x, lastInput.y)) return 0; |
| if ((style & SWT.RADIO) != 0) { |
| if ((parent.getStyle () & SWT.NO_RADIO_GROUP) != 0) { |
| setSelection (!selected); |
| } else { |
| selectRadio (); |
| } |
| } else { |
| if ((style & SWT.CHECK) != 0) { |
| if (grayed) { |
| if (GTK.gtk_toggle_button_get_active (handle)) { |
| GTK.gtk_toggle_button_set_inconsistent (handle, true); |
| } else { |
| GTK.gtk_toggle_button_set_inconsistent (handle, false); |
| } |
| } |
| } |
| } |
| sendSelectionEvent (SWT.Selection); |
| return 0; |
| } |
| |
| @Override |
| long gtk_draw (long widget, long cairo) { |
| /* |
| * On GTK3.19+, widget are are shown with the default minimum size regardless of the |
| * size of the fixed container. This causes 0x0 widgets to be visible but cannot be used. |
| * The fix is to make the widget invisible to the user. Resizing widget later on to a larger size |
| * makes the widget visible again in setBounds. See Bug 533469, Bug 531120. |
| */ |
| if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) { |
| if (GTK.gtk_widget_get_visible(widget)) GTK.gtk_widget_set_visible(widget, false); |
| // Button and display should not be disposed after hiding widget |
| if (isDisposed() || display == null || display.isDisposed()) error (SWT.ERROR_DEVICE_DISPOSED); |
| } |
| return super.gtk_draw(widget, cairo); |
| } |
| |
| @Override |
| boolean mustBeVisibleOnInitBounds() { |
| // Bug 540298: Button needs to be visible in order to gain focus. |
| return true; |
| } |
| |
| @Override |
| long gtk_focus_in_event (long widget, long event) { |
| long result = super.gtk_focus_in_event (widget, event); |
| // widget could be disposed at this point |
| if (handle == 0) return 0; |
| if ((style & SWT.PUSH) != 0 && GTK.gtk_widget_has_default (handle)) { |
| Decorations menuShell = menuShell (); |
| menuShell.defaultButton = this; |
| } |
| return result; |
| } |
| |
| @Override |
| long gtk_focus_out_event (long widget, long event) { |
| long result = super.gtk_focus_out_event (widget, event); |
| // widget could be disposed at this point |
| if (handle == 0) return 0; |
| if ((style & SWT.PUSH) != 0) { |
| Decorations menuShell = menuShell (); |
| if (menuShell.defaultButton == this) { |
| menuShell.defaultButton = null; |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| long gtk_key_press_event (long widget, long event) { |
| long result = super.gtk_key_press_event (widget, event); |
| if (result != 0) return result; |
| if ((style & SWT.RADIO) != 0) selected = getSelection (); |
| return result; |
| } |
| |
| @Override |
| void hookEvents () { |
| super.hookEvents(); |
| OS.g_signal_connect_closure (handle, OS.clicked, display.getClosure (CLICKED), false); |
| if (labelHandle != 0) { |
| OS.g_signal_connect_closure_by_id (labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.getClosure (MNEMONIC_ACTIVATE), false); |
| } |
| } |
| |
| @Override |
| boolean isDescribedByLabel () { |
| return false; |
| } |
| |
| @Override |
| boolean mnemonicHit (char key) { |
| if (labelHandle == 0) return false; |
| boolean result = super.mnemonicHit (labelHandle, key); |
| if (result) setFocus (); |
| return result; |
| } |
| |
| @Override |
| boolean mnemonicMatch (char key) { |
| if (labelHandle == 0) return false; |
| return mnemonicMatch (labelHandle, key); |
| } |
| |
| @Override |
| void register () { |
| super.register (); |
| if (boxHandle != 0) display.addWidget (boxHandle, this); |
| if (labelHandle != 0) display.addWidget (labelHandle, this); |
| if (imageHandle != 0) display.addWidget (imageHandle, this); |
| if (arrowHandle != 0) display.addWidget (arrowHandle, this); |
| } |
| |
| @Override |
| void releaseHandle () { |
| super.releaseHandle (); |
| boxHandle = imageHandle = labelHandle = arrowHandle = 0; |
| } |
| |
| @Override |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (groupHandle != 0) OS.g_object_unref (groupHandle); |
| groupHandle = 0; |
| if (imageList != null) imageList.dispose (); |
| imageList = null; |
| image = null; |
| text = null; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected by the user. |
| * |
| * @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 SelectionListener |
| * @see #addSelectionListener |
| */ |
| public void removeSelectionListener (SelectionListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Selection, listener); |
| eventTable.unhook (SWT.DefaultSelection,listener); |
| } |
| |
| @Override |
| void resizeHandle (int width, int height) { |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0 && (style & SWT.WRAP) == 0) { |
| OS.swt_fixed_resize (GTK.gtk_widget_get_parent (topHandle()), topHandle(), width, height); |
| } else { |
| super.resizeHandle(width, height); |
| } |
| } |
| |
| void selectRadio () { |
| /* |
| * This code is intentionally commented. When two groups |
| * of radio buttons with the same parent are separated by |
| * another control, the correct behavior should be that |
| * the two groups act independently. This is consistent |
| * with radio tool and menu items. The commented code |
| * implements this behavior. |
| */ |
| // int index = 0; |
| // Control [] children = parent._getChildren (); |
| // while (index < children.length && children [index] != this) index++; |
| // int i = index - 1; |
| // while (i >= 0 && children [i].setRadioSelection (false)) --i; |
| // int j = index + 1; |
| // while (j < children.length && children [j].setRadioSelection (false)) j++; |
| // setSelection (true); |
| Control [] children = parent._getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (this != child) child.setRadioSelection (false); |
| } |
| setSelection (true); |
| } |
| |
| /** |
| * Controls how text, images and arrows will be displayed |
| * in the receiver. The argument should be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is an <code>ARROW</code> button, in |
| * which case, the argument indicates the direction of |
| * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, |
| * <code>UP</code> or <code>DOWN</code>). |
| * |
| * @param alignment the new alignment |
| * |
| * @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 setAlignment (int alignment) { |
| checkWidget (); |
| _setAlignment (alignment); |
| } |
| |
| void _setAlignment (int alignment) { |
| if ((style & SWT.ARROW) != 0) { |
| if ((style & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT)) == 0) return; |
| style &= ~(SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT); |
| style |= alignment & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT); |
| boolean isRTL = (style & SWT.RIGHT_TO_LEFT) != 0; |
| byte arrowType [] = GTK.GTK_NAMED_ICON_GO_UP; |
| switch (alignment) { |
| case SWT.UP: arrowType = GTK.GTK_NAMED_ICON_GO_UP; break; |
| case SWT.DOWN: arrowType = GTK.GTK_NAMED_ICON_GO_DOWN; break; |
| case SWT.LEFT: arrowType = isRTL ? GTK.GTK_NAMED_ICON_GO_NEXT : GTK.GTK_NAMED_ICON_GO_PREVIOUS; break; |
| case SWT.RIGHT: arrowType = isRTL ? GTK.GTK_NAMED_ICON_GO_PREVIOUS : GTK.GTK_NAMED_ICON_GO_NEXT; break; |
| } |
| GTK.gtk_image_set_from_icon_name (arrowHandle, arrowType, GTK.GTK_ICON_SIZE_MENU); |
| return; |
| } |
| if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return; |
| style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| /* Alignment not honoured when image and text are visible */ |
| boolean bothVisible = GTK.gtk_widget_get_visible (labelHandle) && GTK.gtk_widget_get_visible (imageHandle); |
| if (bothVisible) { |
| if ((style & (SWT.RADIO | SWT.CHECK)) != 0) alignment = SWT.LEFT; |
| if ((style & (SWT.PUSH | SWT.TOGGLE)) != 0) alignment = SWT.CENTER; |
| } |
| if ((alignment & SWT.LEFT) != 0) { |
| if (bothVisible) { |
| gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 0, GTK.GTK_PACK_START); |
| gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, GTK.GTK_PACK_START); |
| } else { |
| gtk_box_set_child_packing (boxHandle, labelHandle, true, true, 0, GTK.GTK_PACK_END); |
| gtk_box_set_child_packing (boxHandle, imageHandle, true, true, 0, GTK.GTK_PACK_START); |
| } |
| |
| gtk_label_set_align(labelHandle,0.0f,0.5f); |
| gtk_widget_set_align(imageHandle,GTK.GTK_ALIGN_START, GTK.GTK_ALIGN_CENTER); |
| |
| GTK.gtk_label_set_justify (labelHandle, GTK.GTK_JUSTIFY_LEFT); |
| return; |
| } |
| if ((alignment & SWT.CENTER) != 0) { |
| if (bothVisible) { |
| gtk_box_set_child_packing (boxHandle, labelHandle, true, true, 0, GTK.GTK_PACK_END); |
| gtk_box_set_child_packing (boxHandle, imageHandle, true, true, 0, GTK.GTK_PACK_START); |
| |
| gtk_label_set_align(labelHandle,0.0f,0.5f); |
| gtk_widget_set_align(imageHandle,GTK.GTK_ALIGN_END, GTK.GTK_ALIGN_CENTER); |
| |
| } else { |
| gtk_box_set_child_packing (boxHandle, labelHandle, true, true, 0, GTK.GTK_PACK_END); |
| gtk_box_set_child_packing (boxHandle, imageHandle, true, true, 0, GTK.GTK_PACK_START); |
| |
| gtk_label_set_align(labelHandle,0.5f,0.5f); |
| gtk_widget_set_align(imageHandle,GTK.GTK_ALIGN_CENTER, GTK.GTK_ALIGN_CENTER); |
| GTK.gtk_label_set_justify (labelHandle, GTK.GTK_JUSTIFY_CENTER); |
| } |
| return; |
| } |
| if ((alignment & SWT.RIGHT) != 0) { |
| if (bothVisible) { |
| gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 0, GTK.GTK_PACK_END); |
| gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, GTK.GTK_PACK_END); |
| } else { |
| gtk_box_set_child_packing (boxHandle, labelHandle, true, true, 0, GTK.GTK_PACK_END); |
| gtk_box_set_child_packing (boxHandle, imageHandle, true, true, 0, GTK.GTK_PACK_START); |
| } |
| |
| gtk_label_set_align(labelHandle,1.0f,0.5f); |
| gtk_widget_set_align(imageHandle,GTK.GTK_ALIGN_END, GTK.GTK_ALIGN_CENTER); |
| GTK.gtk_label_set_justify (labelHandle, GTK.GTK_JUSTIFY_RIGHT); |
| return; |
| } |
| } |
| |
| @Override |
| void setBackgroundGdkRGBA (long context, long handle, GdkRGBA rgba) { |
| background = rgba; |
| // Form background CSS string |
| String css ="* {background : "; |
| String color = display.gtk_rgba_to_css_string (rgba); |
| css += color + ";}"; |
| |
| /* |
| * Feature in GTK: some toggle style (check, radio, and toggle) buttons |
| * have inverted colors, meaning the background color when checked is |
| * a dark color (like blue or green), and the checkmark/indicator is |
| * white. To complicate matters, this background area is an image, and |
| * overriding this with a color causes the checkmark to be invisible. |
| * The new (GTK3 >= 3.24.11) Adwaita theme is affected, as well as the |
| * default Yaru theme on Ubuntu. |
| * |
| * The fix is to set the default CSS for the default background case, as |
| * this doesn't use the universal (*) selector. See bug 546552. |
| */ |
| if (rgba == null && toggleButtonTheming) { |
| super.setBackgroundGdkRGBA(context, handle, rgba); |
| return; |
| } |
| |
| // Cache background color |
| cssBackground = css; |
| |
| // Apply background color and any cached foreground color |
| String finalCss = display.gtk_css_create_css_color_string (cssBackground, cssForeground, SWT.BACKGROUND); |
| gtk_css_provider_load_from_css (context, finalCss); |
| } |
| |
| @Override |
| int setBounds (int x, int y, int width, int height, boolean move, boolean resize) { |
| /* |
| * Bug in GTK. For some reason, when the label is |
| * wrappable and its container is resized, it does not |
| * cause the label to be wrapped. The fix is to |
| * determine the size that will wrap the label |
| * and expilictly set that size to force the label |
| * to wrap. |
| * |
| * This part of the fix causes the label to be |
| * resized to the preferred size but it still |
| * won't draw properly. |
| */ |
| boolean wrap = labelHandle != 0 && (style & SWT.WRAP) != 0 && GTK.gtk_widget_get_visible (labelHandle); |
| if (wrap) GTK.gtk_widget_set_size_request (boxHandle, -1, -1); |
| int result = super.setBounds (x, y, width, height, move, resize); |
| /* |
| * Bug in GTK. For some reason, when the label is |
| * wrappable and its container is resized, it does not |
| * cause the label to be wrapped. The fix is to |
| * determine the size that will wrap the label |
| * and expilictly set that size to force the label |
| * to wrap. |
| * |
| * This part of the fix forces the label to be |
| * resized so that it will draw wrapped. |
| */ |
| if (wrap) { |
| GtkAllocation allocation = new GtkAllocation(); |
| GTK.gtk_widget_get_allocation (boxHandle, allocation); |
| int boxWidth = allocation.width; |
| int boxHeight = allocation.height; |
| long labelLayout = GTK.gtk_label_get_layout (labelHandle); |
| int pangoWidth = OS.pango_layout_get_width (labelLayout); |
| OS.pango_layout_set_width (labelLayout, -1); |
| int [] w = new int [1], h = new int [1]; |
| OS.pango_layout_get_pixel_size (labelLayout, w, h); |
| OS.pango_layout_set_width (labelLayout, pangoWidth); |
| int imageWidth = 0; |
| if (GTK.gtk_widget_get_visible (imageHandle)) { |
| GtkRequisition requisition = new GtkRequisition (); |
| gtk_widget_get_preferred_size (imageHandle, requisition); |
| imageWidth = requisition.width; |
| int [] spacing = new int [1]; |
| OS.g_object_get (boxHandle, OS.spacing, spacing, 0); |
| imageWidth += spacing [0]; |
| } |
| GTK.gtk_widget_set_size_request (labelHandle, Math.min(w [0], boxWidth - imageWidth), -1); |
| /* |
| * Bug in GTK. Setting the size request should invalidate the label's |
| * layout, but it does not. The fix is to resize the label directly. |
| */ |
| GtkRequisition requisition = new GtkRequisition (); |
| gtk_widget_get_preferred_size (boxHandle, requisition); |
| allocation.width = boxWidth; |
| allocation.height = boxHeight; |
| Point sizes = resizeCalculationsGTK3(boxHandle, boxWidth, boxHeight); |
| allocation.width = sizes.x; |
| allocation.height = sizes.y; |
| GTK.gtk_widget_size_allocate (boxHandle, allocation); |
| } |
| return result; |
| } |
| |
| @Override |
| void setFontDescription (long fontDesc) { |
| // Don't set the font if we have no text set |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 22, 0) && ((text != null && text.isEmpty()) || text == null)) { |
| return; |
| } else { |
| super.setFontDescription (fontDesc); |
| if (labelHandle != 0) setFontDescription (labelHandle, fontDesc); |
| if (imageHandle != 0) setFontDescription (imageHandle, fontDesc); |
| } |
| } |
| |
| @Override |
| boolean setRadioSelection (boolean value) { |
| if ((style & SWT.RADIO) == 0) return false; |
| if (getSelection () != value) { |
| setSelection (value); |
| sendSelectionEvent (SWT.Selection); |
| } |
| return true; |
| } |
| |
| @Override |
| void setForegroundGdkRGBA (GdkRGBA rgba) { |
| super.setForegroundGdkRGBA(rgba); |
| setForegroundGdkRGBA (fixedHandle, rgba); |
| if (labelHandle != 0) setForegroundGdkRGBA (labelHandle, rgba); |
| if (imageHandle != 0) setForegroundGdkRGBA (imageHandle, rgba); |
| } |
| |
| @Override |
| void setForegroundGdkRGBA (long handle, GdkRGBA rgba) { |
| long context = GTK.gtk_widget_get_style_context (handle); |
| |
| GdkRGBA toSet = rgba == null ? display.COLOR_WIDGET_FOREGROUND_RGBA : rgba; |
| String css; |
| String color = display.gtk_rgba_to_css_string(toSet); |
| int bits = SWT.CHECK | SWT.RADIO; |
| switch (style & bits) { |
| case SWT.CHECK: |
| css = "checkbutton {color: " + color + ";}"; |
| String checkColor; |
| if (toggleButtonTheming) { |
| GdkRGBA checkRGBA = rgba == null ? display.COLOR_TOGGLE_BUTTON_FOREGROUND_RGBA : rgba; |
| checkColor = display.gtk_rgba_to_css_string(checkRGBA); |
| } else { |
| checkColor = display.gtk_rgba_to_css_string(toSet); |
| } |
| css += " check {color: " + checkColor + ";}"; |
| break; |
| case SWT.RADIO: |
| css = "radiobutton {color: " + color + ";}"; |
| String radioColor; |
| if (toggleButtonTheming) { |
| GdkRGBA radioRGBA = rgba == null ? display.COLOR_TOGGLE_BUTTON_FOREGROUND_RGBA : rgba; |
| radioColor = display.gtk_rgba_to_css_string(radioRGBA); |
| } else { |
| radioColor = display.gtk_rgba_to_css_string(toSet); |
| } |
| css += " radio {color: " + radioColor + ";}"; |
| break; |
| default: |
| css = "button {color: " + color + ";}"; |
| } |
| |
| // Cache foreground color |
| cssForeground = css; |
| |
| // Apply foreground color and any cached background color |
| String finalCss = display.gtk_css_create_css_color_string (cssBackground, cssForeground, SWT.FOREGROUND); |
| gtk_css_provider_load_from_css(context, finalCss); |
| } |
| |
| /** |
| * Sets the grayed state of the receiver. This state change |
| * only applies if the control was created with the SWT.CHECK |
| * style. |
| * |
| * @param grayed the new grayed 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 3.4 |
| */ |
| public void setGrayed (boolean grayed) { |
| checkWidget(); |
| if ((style & SWT.CHECK) == 0) return; |
| this.grayed = grayed; |
| if (grayed && GTK.gtk_toggle_button_get_active (handle)) { |
| GTK.gtk_toggle_button_set_inconsistent (handle, true); |
| } else { |
| GTK.gtk_toggle_button_set_inconsistent (handle, false); |
| } |
| } |
| |
| /** |
| * Sets the receiver's image to the argument, which may be |
| * <code>null</code> indicating that no image should be displayed. |
| * <p> |
| * Note that a Button can display an image and text simultaneously |
| * on Windows (starting with XP), GTK+ and OSX. On other platforms, |
| * a Button that has an image and text set into it will display the |
| * image or text that was set most recently. |
| * </p> |
| * @param image the image to display on the receiver (may be <code>null</code>) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the image 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 setImage (Image image) { |
| checkWidget (); |
| if ((style & SWT.ARROW) != 0) return; |
| if (imageList != null) imageList.dispose (); |
| imageList = null; |
| if (image != null) { |
| if (image.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT); |
| imageList = new ImageList (); |
| int imageIndex = imageList.add (image); |
| long pixbuf = imageList.getPixbuf (imageIndex); |
| gtk_image_set_from_gicon(imageHandle, pixbuf); |
| } else { |
| gtk_image_set_from_gicon (imageHandle, 0); |
| } |
| this.image = image; |
| updateWidgetsVisibility(); |
| _setAlignment (style); |
| } |
| |
| @Override |
| void setOrientation (boolean create) { |
| super.setOrientation (create); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0 || !create) { |
| int dir = (style & SWT.RIGHT_TO_LEFT) != 0 ? GTK.GTK_TEXT_DIR_RTL : GTK.GTK_TEXT_DIR_LTR; |
| if (boxHandle != 0) GTK.gtk_widget_set_direction (boxHandle, dir); |
| if (labelHandle != 0) GTK.gtk_widget_set_direction (labelHandle, dir); |
| if (imageHandle != 0) GTK.gtk_widget_set_direction (imageHandle, dir); |
| if (arrowHandle != 0) { |
| byte arrowType [] = (style & SWT.RIGHT_TO_LEFT) != 0 ? GTK.GTK_NAMED_ICON_GO_NEXT : GTK.GTK_NAMED_ICON_GO_PREVIOUS; |
| switch (style & (SWT.LEFT | SWT.RIGHT)) { |
| case SWT.LEFT: GTK.gtk_image_set_from_icon_name (arrowHandle, arrowType, GTK.GTK_ICON_SIZE_MENU); break; |
| case SWT.RIGHT: GTK.gtk_image_set_from_icon_name (arrowHandle, arrowType, GTK.GTK_ICON_SIZE_MENU); break; |
| } |
| } |
| } |
| } |
| |
| /** |
| * Sets the selection state of the receiver, if it is of type <code>CHECK</code>, |
| * <code>RADIO</code>, or <code>TOGGLE</code>. |
| * |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. When it is of type <code>TOGGLE</code>, |
| * it is selected when it is pushed in. |
| * |
| * @param selected the new selection 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 setSelection (boolean selected) { |
| checkWidget(); |
| if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return; |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CLICKED); |
| GTK.gtk_toggle_button_set_active (handle, selected); |
| if ((style & SWT.CHECK) != 0) { |
| if (selected && grayed) { |
| GTK.gtk_toggle_button_set_inconsistent (handle, true); |
| } else { |
| GTK.gtk_toggle_button_set_inconsistent (handle, false); |
| } |
| } |
| if ((style & SWT.RADIO) != 0) GTK.gtk_toggle_button_set_active (groupHandle, !selected); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CLICKED); |
| } |
| |
| /** |
| * Sets the receiver's text. |
| * <p> |
| * This method sets the button label. The label may include |
| * the mnemonic character but must not contain line delimiters. |
| * </p> |
| * <p> |
| * Mnemonics are indicated by an '&' that causes the next |
| * character to be the mnemonic. When the user presses a |
| * key sequence that matches the mnemonic, a selection |
| * event occurs. On most platforms, the mnemonic appears |
| * underlined but may be emphasized in a platform specific |
| * manner. The mnemonic indicator character '&' can be |
| * escaped by doubling it in the string, causing a single |
| * '&' to be displayed. |
| * </p><p> |
| * Note that a Button can display an image and text simultaneously |
| * on Windows (starting with XP), GTK+ and OSX. On other platforms, |
| * a Button that has an image and text set into it will display the |
| * image or text that was set most recently. |
| * </p><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text 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 setText (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.ARROW) != 0) return; |
| text = string; |
| char [] chars = fixMnemonic (string); |
| byte [] buffer = Converter.wcsToMbcs (chars, true); |
| GTK.gtk_label_set_text_with_mnemonic (labelHandle, buffer); |
| updateWidgetsVisibility(); |
| _setAlignment (style); |
| // Now that text has been added, set the font. This ensures |
| // the Button's size is correctly calculated/updated. |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 22, 0)) { |
| setFontDescription(font == null ? defaultFont().handle : font.handle); |
| } |
| } |
| |
| private void updateWidgetsVisibility() { |
| if (text.length() == 0 && image == null) { |
| GTK.gtk_widget_hide (boxHandle); |
| GTK.gtk_widget_hide (labelHandle); |
| GTK.gtk_widget_hide (imageHandle); |
| } else { |
| GTK.gtk_widget_show (boxHandle); |
| if (text.length() == 0) |
| GTK.gtk_widget_hide (labelHandle); |
| else |
| GTK.gtk_widget_show (labelHandle); |
| if (image == null) |
| GTK.gtk_widget_hide (imageHandle); |
| else |
| GTK.gtk_widget_show (imageHandle); |
| } |
| } |
| |
| @Override |
| void showWidget () { |
| super.showWidget (); |
| if (boxHandle != 0 && ((text != null && text.length() != 0) || image != null)) GTK.gtk_widget_show (boxHandle); |
| if (labelHandle != 0 && text != null && text.length() != 0) GTK.gtk_widget_show (labelHandle); |
| if (arrowHandle != 0) GTK.gtk_widget_show (arrowHandle); |
| } |
| |
| @Override |
| int traversalCode(int key, long event) { |
| int code = super.traversalCode (key, event); |
| if ((style & SWT.ARROW) != 0) code &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS); |
| if ((style & SWT.RADIO) != 0) code |= SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS; |
| return code; |
| } |
| |
| @Override |
| long windowProc (long handle, long arg0, long user_data) { |
| /* |
| * For Labels/Buttons, the first widget in the tree with a GdkWindow is SwtFixed. |
| * Unfortunately this fails the check in !GTK_IS_CONTAINER check Widget.windowProc(). |
| * Instead lets override windowProc() here and check for paintHandle() compatibility. |
| * Fixes bug 481485 without re-introducing bug 483791. |
| */ |
| switch ((int)user_data) { |
| case DRAW: { |
| if (paintHandle() == handle) { |
| return gtk_draw(handle, arg0); |
| } |
| } |
| } |
| return super.windowProc(handle, arg0, user_data); |
| } |
| |
| } |