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author | Silenio Quarti <silenio> | 2009-07-01 14:50:54 +0000 |
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committer | Silenio Quarti <silenio> | 2009-07-01 14:50:54 +0000 |
commit | 093c579a4ffd9551acb901bba9617e7aa776989d (patch) | |
tree | 71cf23798b651ef92f188390841a8d130908fb11 /bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Button.java | |
parent | f664d297f7bb009784868bf3fcf0b3e3bb9a646b (diff) | |
download | eclipse.platform.swt-093c579a4ffd9551acb901bba9617e7aa776989d.tar.gz eclipse.platform.swt-093c579a4ffd9551acb901bba9617e7aa776989d.tar.xz eclipse.platform.swt-093c579a4ffd9551acb901bba9617e7aa776989d.zip |
restore HEAD after accidental deletion by error in automated build script
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Button.java')
-rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Button.java | 836 |
1 files changed, 836 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Button.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Button.java new file mode 100644 index 0000000000..41802dc836 --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Button.java @@ -0,0 +1,836 @@ +/******************************************************************************* + * Copyright (c) 2000, 2009 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.gtk.*; +import org.eclipse.swt.*; +import org.eclipse.swt.graphics.*; +import org.eclipse.swt.events.*; + +/** + * 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</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 intended to be subclassed <em>only</em> + * within the SWT implementation. + * </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 { + int /*long*/ boxHandle, labelHandle, imageHandle, arrowHandle, groupHandle; + boolean selected, grayed; + ImageList imageList; + Image image; + String text; + +/** + * 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; +} + +/** + * 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> + * + * @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); +} + +public Point computeSize (int wHint, int hHint, boolean changed) { + checkWidget (); + if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0; + if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0; + /* + * 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]; + OS.gtk_widget_get_size_request (boxHandle, reqWidth, reqHeight); + OS.gtk_widget_set_size_request (boxHandle, -1, -1); + } + Point size = computeNativeSize (handle, wHint, hHint, changed); + if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { + OS.gtk_widget_set_size_request (boxHandle, reqWidth [0], reqHeight [0]); + } + if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) { + if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_CAN_DEFAULT) != 0) { + int /*long*/ [] buffer = new int /*long*/ [1]; + GtkBorder border = new GtkBorder (); + OS.gtk_widget_style_get (handle, OS.default_border, buffer, 0); + if (buffer[0] != 0) { + OS.memmove (border, buffer[0], GtkBorder.sizeof); + } else { + /* Use the GTK+ default value of 1 for each. */ + border.left = border.right = border.top = border.bottom = 1; + } + if (wHint != SWT.DEFAULT) size.x += border.left + border.right; + if (hHint != SWT.DEFAULT) size.y += border.top + border.bottom; + } + } + return size; +} + +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); + OS.gtk_fixed_set_has_window (fixedHandle, true); + switch (style & bits) { + case SWT.ARROW: + int arrow_type = OS.GTK_ARROW_UP; + if ((style & SWT.UP) != 0) arrow_type = OS.GTK_ARROW_UP; + if ((style & SWT.DOWN) != 0) arrow_type = OS.GTK_ARROW_DOWN; + if ((style & SWT.LEFT) != 0) arrow_type = OS.GTK_ARROW_LEFT; + if ((style & SWT.RIGHT) != 0) arrow_type = OS.GTK_ARROW_RIGHT; + handle = OS.gtk_button_new (); + if (handle == 0) error (SWT.ERROR_NO_HANDLES); + arrowHandle = OS.gtk_arrow_new (arrow_type, OS.GTK_SHADOW_OUT); + if (arrowHandle == 0) error (SWT.ERROR_NO_HANDLES); + break; + case SWT.TOGGLE: + handle = OS.gtk_toggle_button_new (); + if (handle == 0) error (SWT.ERROR_NO_HANDLES); + break; + case SWT.CHECK: + handle = OS.gtk_check_button_new (); + if (handle == 0) error (SWT.ERROR_NO_HANDLES); + 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 = OS.gtk_radio_button_new (0); + if (groupHandle == 0) error (SWT.ERROR_NO_HANDLES); + OS.g_object_ref (groupHandle); + OS.gtk_object_sink (groupHandle); + handle = OS.gtk_radio_button_new (OS.gtk_radio_button_get_group (groupHandle)); + if (handle == 0) error (SWT.ERROR_NO_HANDLES); + break; + case SWT.PUSH: + default: + handle = OS.gtk_button_new (); + if (handle == 0) error (SWT.ERROR_NO_HANDLES); + OS.GTK_WIDGET_SET_FLAGS(handle, OS.GTK_CAN_DEFAULT); + break; + } + if ((style & SWT.ARROW) != 0) { + OS.gtk_container_add (handle, arrowHandle); + } else { + boxHandle = OS.gtk_hbox_new (false, 4); + if (boxHandle == 0) error (SWT.ERROR_NO_HANDLES); + labelHandle = OS.gtk_label_new_with_mnemonic (null); + if (labelHandle == 0) error (SWT.ERROR_NO_HANDLES); + imageHandle = OS.gtk_image_new (); + if (imageHandle == 0) error (SWT.ERROR_NO_HANDLES); + OS.gtk_container_add (handle, boxHandle); + OS.gtk_container_add (boxHandle, imageHandle); + OS.gtk_container_add (boxHandle, labelHandle); + } + OS.gtk_container_add (fixedHandle, handle); + + if ((style & SWT.ARROW) != 0) return; + _setAlignment (style & (SWT.LEFT | SWT.CENTER | SWT.RIGHT)); +} + +void createWidget (int index) { + super.createWidget (index); + text = ""; +} + +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); +} + +int /*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; +} + +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 OS.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; +} + +int /*long*/ gtk_button_press_event (int /*long*/ widget, int /*long*/ event) { + int /*long*/ result = super.gtk_button_press_event (widget, event); + if (result != 0) return result; + if ((style & SWT.RADIO) != 0) selected = getSelection (); + return result; +} + +int /*long*/ gtk_clicked (int /*long*/ widget) { + 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 (OS.gtk_toggle_button_get_active (handle)) { + OS.gtk_toggle_button_set_inconsistent (handle, true); + } else { + OS.gtk_toggle_button_set_inconsistent (handle, false); + } + } + } + } + postEvent (SWT.Selection); + return 0; +} + +int /*long*/ gtk_focus_in_event (int /*long*/ widget, int /*long*/ event) { + int /*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 && OS.GTK_WIDGET_HAS_DEFAULT (handle)) { + Decorations menuShell = menuShell (); + menuShell.defaultButton = this; + } + return result; +} + +int /*long*/ gtk_focus_out_event (int /*long*/ widget, int /*long*/ event) { + int /*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 && !OS.GTK_WIDGET_HAS_DEFAULT (handle)) { + Decorations menuShell = menuShell (); + if (menuShell.defaultButton == this) { + menuShell.defaultButton = null; + } + } + return result; +} + +int /*long*/ gtk_key_press_event (int /*long*/ widget, int /*long*/ event) { + int /*long*/ result = super.gtk_key_press_event (widget, event); + if (result != 0) return result; + if ((style & SWT.RADIO) != 0) selected = getSelection (); + return result; +} + +void hookEvents () { + super.hookEvents(); + OS.g_signal_connect_closure (handle, OS.clicked, display.closures [CLICKED], false); + if (labelHandle != 0) { + OS.g_signal_connect_closure_by_id (labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.closures [MNEMONIC_ACTIVATE], false); + } +} + +boolean isDescribedByLabel () { + return false; +} + +boolean mnemonicHit (char key) { + if (labelHandle == 0) return false; + boolean result = super.mnemonicHit (labelHandle, key); + if (result) setFocus (); + return result; +} + +boolean mnemonicMatch (char key) { + if (labelHandle == 0) return false; + return mnemonicMatch (labelHandle, key); +} + +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); +} + +void releaseHandle () { + super.releaseHandle (); + boxHandle = imageHandle = labelHandle = arrowHandle = 0; +} + +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); +} + +void resizeHandle (int width, int height) { + super.resizeHandle (width, height); + /* + * 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. + */ + if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { + OS.gtk_widget_set_size_request (boxHandle, width, -1); + } +} + +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); + int arrow_type = OS.GTK_ARROW_UP; + boolean isRTL = (style & SWT.RIGHT_TO_LEFT) != 0; + switch (alignment) { + case SWT.UP: arrow_type = OS.GTK_ARROW_UP; break; + case SWT.DOWN: arrow_type = OS.GTK_ARROW_DOWN; break; + case SWT.LEFT: arrow_type = isRTL ? OS.GTK_ARROW_RIGHT : OS.GTK_ARROW_LEFT; break; + case SWT.RIGHT: arrow_type = isRTL ? OS.GTK_ARROW_LEFT : OS.GTK_ARROW_RIGHT; break; + } + OS.gtk_arrow_set (arrowHandle, arrow_type, OS.GTK_SHADOW_OUT); + 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 = OS.GTK_WIDGET_VISIBLE (labelHandle) && OS.GTK_WIDGET_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) { + OS.gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_START); + OS.gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_START); + } + OS.gtk_misc_set_alignment (labelHandle, 0.0f, 0.5f); + OS.gtk_label_set_justify (labelHandle, OS.GTK_JUSTIFY_LEFT); + OS.gtk_misc_set_alignment (imageHandle, 0.0f, 0.5f); + return; + } + if ((alignment & SWT.CENTER) != 0) { + if (bothVisible) { + OS.gtk_box_set_child_packing (boxHandle, labelHandle, true, true, 0, OS.GTK_PACK_END); + OS.gtk_box_set_child_packing (boxHandle, imageHandle, true, true, 0, OS.GTK_PACK_START); + OS.gtk_misc_set_alignment (labelHandle, 0f, 0.5f); + OS.gtk_misc_set_alignment (imageHandle, 1f, 0.5f); + } else { + OS.gtk_misc_set_alignment (labelHandle, 0.5f, 0.5f); + OS.gtk_label_set_justify (labelHandle, OS.GTK_JUSTIFY_CENTER); + OS.gtk_misc_set_alignment (imageHandle, 0.5f, 0.5f); + } + return; + } + if ((alignment & SWT.RIGHT) != 0) { + if (bothVisible) { + OS.gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 0, OS.GTK_PACK_END); + OS.gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_END); + } + OS.gtk_misc_set_alignment (labelHandle, 1.0f, 0.5f); + OS.gtk_label_set_justify (labelHandle, OS.GTK_JUSTIFY_RIGHT); + OS.gtk_misc_set_alignment (imageHandle, 1.0f, 0.5f); + return; + } +} + +void setBackgroundColor (GdkColor color) { + super.setBackgroundColor (color); + setBackgroundColor(fixedHandle, color); + if (labelHandle != 0) setBackgroundColor(labelHandle, color); + if (imageHandle != 0) setBackgroundColor(imageHandle, color); +} + +void setFontDescription (int /*long*/ font) { + super.setFontDescription (font); + if (labelHandle != 0) OS.gtk_widget_modify_font (labelHandle, font); + if (imageHandle != 0) OS.gtk_widget_modify_font (imageHandle, font); +} + +boolean setRadioSelection (boolean value) { + if ((style & SWT.RADIO) == 0) return false; + if (getSelection () != value) { + setSelection (value); + postEvent (SWT.Selection); + } + return true; +} + +void setForegroundColor (GdkColor color) { + super.setForegroundColor (color); + setForegroundColor (fixedHandle, color); + if (labelHandle != 0) setForegroundColor (labelHandle, color); + if (imageHandle != 0) setForegroundColor (imageHandle, color); +} + +/** + * 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 && OS.gtk_toggle_button_get_active (handle)) { + OS.gtk_toggle_button_set_inconsistent (handle, true); + } else { + OS.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); + int /*long*/ pixbuf = imageList.getPixbuf (imageIndex); + OS.gtk_image_set_from_pixbuf (imageHandle, pixbuf); + if (text.length () == 0) OS.gtk_widget_hide (labelHandle); + OS.gtk_widget_show (imageHandle); + } else { + OS.gtk_image_set_from_pixbuf (imageHandle, 0); + OS.gtk_widget_show (labelHandle); + OS.gtk_widget_hide (imageHandle); + } + this.image = image; + _setAlignment (style); +} + +void setOrientation () { + super.setOrientation (); + if ((style & SWT.RIGHT_TO_LEFT) != 0) { + if (boxHandle != 0) OS.gtk_widget_set_direction (boxHandle, OS.GTK_TEXT_DIR_RTL); + if (labelHandle != 0) OS.gtk_widget_set_direction (labelHandle, OS.GTK_TEXT_DIR_RTL); + if (imageHandle != 0) OS.gtk_widget_set_direction (imageHandle, OS.GTK_TEXT_DIR_RTL); + if (arrowHandle != 0) { + switch (style & (SWT.LEFT | SWT.RIGHT)) { + case SWT.LEFT: OS.gtk_arrow_set (arrowHandle, OS.GTK_ARROW_RIGHT, OS.GTK_SHADOW_OUT); break; + case SWT.RIGHT: OS.gtk_arrow_set (arrowHandle, OS.GTK_ARROW_LEFT, OS.GTK_SHADOW_OUT); 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); + OS.gtk_toggle_button_set_active (handle, selected); + if ((style & SWT.CHECK) != 0) { + if (selected && grayed) { + OS.gtk_toggle_button_set_inconsistent (handle, true); + } else { + OS.gtk_toggle_button_set_inconsistent (handle, false); + } + } + if ((style & SWT.RADIO) != 0) OS.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> + * @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 (null, chars, true); + OS.gtk_label_set_text_with_mnemonic (labelHandle, buffer); + if (image == null) OS.gtk_widget_hide (imageHandle); + OS.gtk_widget_show (labelHandle); + _setAlignment (style); +} + +void showWidget () { + super.showWidget (); + if (boxHandle != 0) OS.gtk_widget_show (boxHandle); + if (labelHandle != 0) OS.gtk_widget_show (labelHandle); + if (arrowHandle != 0) OS.gtk_widget_show (arrowHandle); +} + +int traversalCode (int key, GdkEventKey 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; +} + +} |