| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of this class allow the user to select a font |
| * from all available fonts in the system. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>(none)</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <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/examples.php">SWT Example: ControlExample, Dialog tab</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 FontDialog extends Dialog { |
| FontData fontData; |
| RGB rgb; |
| /** |
| * Constructs a new instance of this class given only its parent. |
| * |
| * @param parent a shell which will be the parent of the new instance |
| * |
| * @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> |
| */ |
| public FontDialog (Shell parent) { |
| this (parent, SWT.APPLICATION_MODAL); |
| } |
| /** |
| * 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 shell which will be the parent of the new instance |
| * @param style the style of dialog 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> |
| */ |
| public FontDialog (Shell parent, int style) { |
| super (parent, checkStyle (parent, style)); |
| checkSubclass (); |
| } |
| |
| /** |
| * Returns a FontData object describing the font that was |
| * selected in the dialog, or null if none is available. |
| * |
| * @return the FontData for the selected font, or null |
| * @deprecated use #getFontList () |
| */ |
| public FontData getFontData () { |
| return fontData; |
| } |
| |
| /** |
| * Returns a FontData set describing the font that was |
| * selected in the dialog, or null if none is available. |
| * |
| * @return the FontData for the selected font, or null |
| * @since 2.1.1 |
| */ |
| public FontData [] getFontList () { |
| if (fontData == null) return null; |
| FontData [] result = new FontData [1]; |
| result [0] = fontData; |
| return result; |
| } |
| |
| /** |
| * Returns an RGB describing the color that was selected |
| * in the dialog, or null if none is available. |
| * |
| * @return the RGB value for the selected color, or null |
| * |
| * @see PaletteData#getRGBs |
| * |
| * @since 2.1 |
| */ |
| public RGB getRGB () { |
| return rgb; |
| } |
| |
| /** |
| * Makes the dialog visible and brings it to the front |
| * of the display. |
| * |
| * @return a FontData object describing the font that was selected, |
| * or null if the dialog was cancelled or an error occurred |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li> |
| * </ul> |
| */ |
| public FontData open () { |
| int /*long*/ handle; |
| byte [] titleBytes; |
| titleBytes = Converter.wcsToMbcs (null, title, true); |
| Display display = parent != null ? parent.getDisplay (): Display.getCurrent (); |
| handle = OS.gtk_font_selection_dialog_new (titleBytes); |
| if (parent!=null) { |
| int /*long*/ shellHandle = parent.topHandle (); |
| OS.gtk_window_set_transient_for(handle, shellHandle); |
| int /*long*/ pixbufs = OS.gtk_window_get_icon_list (shellHandle); |
| if (pixbufs != 0) { |
| OS.gtk_window_set_icon_list (handle, pixbufs); |
| OS.g_list_free (pixbufs); |
| } |
| } |
| if (OS.GTK_VERSION >= OS.VERSION (2, 10, 0)) { |
| int /*long*/ group = OS.gtk_window_get_group(0); |
| OS.gtk_window_group_add_window (group, handle); |
| } |
| OS.gtk_window_set_modal (handle, true); |
| if (fontData != null) { |
| Font font = new Font (display, fontData); |
| int /*long*/ fontName = OS.pango_font_description_to_string (font.handle); |
| int length = OS.strlen (fontName); |
| byte [] buffer = new byte [length + 1]; |
| OS.memmove (buffer, fontName, length); |
| font.dispose(); |
| OS.g_free (fontName); |
| OS.gtk_font_selection_dialog_set_font_name (handle, buffer); |
| } |
| display.addIdleProc (); |
| Dialog oldModal = null; |
| if (OS.gtk_window_get_modal (handle)) { |
| oldModal = display.getModalDialog (); |
| display.setModalDialog (this); |
| } |
| int signalId = 0; |
| int /*long*/ hookId = 0; |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| signalId = OS.g_signal_lookup (OS.map, OS.GTK_TYPE_WIDGET()); |
| hookId = OS.g_signal_add_emission_hook (signalId, 0, display.emissionProc, handle, 0); |
| } |
| int response = OS.gtk_dialog_run (handle); |
| /* |
| * This call to gdk_threads_leave() is a temporary work around |
| * to avoid deadlocks when gdk_threads_init() is called by native |
| * code outside of SWT (i.e AWT, etc). It ensures that the current |
| * thread leaves the GTK lock acquired by the function above. |
| */ |
| OS.gdk_threads_leave(); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| OS.g_signal_remove_emission_hook (signalId, hookId); |
| } |
| if (OS.gtk_window_get_modal (handle)) { |
| display.setModalDialog (oldModal); |
| } |
| boolean success = response == OS.GTK_RESPONSE_OK; |
| if (success) { |
| int /*long*/ fontName = OS.gtk_font_selection_dialog_get_font_name (handle); |
| int length = OS.strlen (fontName); |
| byte [] buffer = new byte [length + 1]; |
| OS.memmove (buffer, fontName, length); |
| OS.g_free (fontName); |
| int /*long*/ fontDesc = OS.pango_font_description_from_string (buffer); |
| Font font = Font.gtk_new (display, fontDesc); |
| fontData = font.getFontData () [0]; |
| OS.pango_font_description_free (fontDesc); |
| } |
| display.removeIdleProc (); |
| OS.gtk_widget_destroy(handle); |
| if (!success) return null; |
| return fontData; |
| } |
| /** |
| * Sets a FontData object describing the font to be |
| * selected by default in the dialog, or null to let |
| * the platform choose one. |
| * |
| * @param fontData the FontData to use initially, or null |
| * @deprecated use #setFontList (FontData []) |
| */ |
| public void setFontData (FontData fontData) { |
| this.fontData = fontData; |
| } |
| |
| /** |
| * Sets the set of FontData objects describing the font to |
| * be selected by default in the dialog, or null to let |
| * the platform choose one. |
| * |
| * @param fontData the set of FontData objects to use initially, or null |
| * to let the platform select a default when open() is called |
| * |
| * @see Font#getFontData |
| * |
| * @since 2.1.1 |
| */ |
| public void setFontList (FontData [] fontData) { |
| if (fontData != null && fontData.length > 0) { |
| this.fontData = fontData [0]; |
| } else { |
| this.fontData = null; |
| } |
| } |
| /** |
| * Sets the RGB describing the color to be selected by default |
| * in the dialog, or null to let the platform choose one. |
| * |
| * @param rgb the RGB value to use initially, or null to let |
| * the platform select a default when open() is called |
| * |
| * @see PaletteData#getRGBs |
| * |
| * @since 2.1 |
| */ |
| public void setRGB (RGB rgb) { |
| this.rgb = rgb; |
| } |
| } |