| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| 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. |
| * <p> |
| * IMPORTANT: This class is intended to be subclassed <em>only</em> |
| * within the SWT implementation. |
| * </p> |
| */
|
|
|
| public class FontDialog extends Dialog {
|
| FontData fontData;
|
| /** |
| * Constructs a new instance of this class given only its |
| * parent. |
| * <p> |
| * Note: Currently, null can be passed in for the parent. |
| * This has the effect of creating the dialog on the currently active |
| * display if there is one. If there is no current display, the |
| * dialog is created on a "default" display. <b>Passing in null as |
| * the parent is not considered to be good coding style, |
| * and may not be supported in a future release of SWT.</b> |
| * </p> |
| * |
| * @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.PRIMARY_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 |
| * for all SWT dialog classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * Note: Currently, null can be passed in for the parent. |
| * This has the effect of creating the dialog on the currently active |
| * display if there is one. If there is no current display, the |
| * dialog is created on a "default" display. <b>Passing in null as |
| * the parent is not considered to be good coding style, |
| * and may not be supported in a future release of SWT.</b> |
| * </p> |
| * |
| * @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, int style) {
|
| super (parent, style);
|
| }
|
| int cancelFunc (int widget, int callData) {
|
| OS.gtk_widget_destroy (callData);
|
| return 0;
|
| }
|
| int destroyFunc (int widget, int colorInfo) {
|
| OS.gtk_main_quit ();
|
| return 0;
|
| }
|
| /** |
| * 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 |
| */ |
| public FontData getFontData() {
|
| return fontData;
|
| }
|
| int okFunc (int widget, int callData) {
|
| int hFontName = OS.gtk_font_selection_dialog_get_font_name (callData);
|
| int fontSize = OS.strlen (hFontName);
|
| byte [] buffer = new byte [fontSize];
|
| OS.memmove (buffer, hFontName, fontSize);
|
| char [] fontName = Converter.mbcsToWcs (null, buffer);
|
| fontData = FontData.gtk_new(new String (fontName));
|
| OS.gtk_widget_destroy (callData);
|
| return 0;
|
| }
|
| /** |
| * 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 handle;
|
| byte [] titleBytes;
|
| titleBytes = Converter.wcsToMbcs (null, title, true);
|
| handle = OS.gtk_font_selection_dialog_new (titleBytes);
|
| GtkFontSelectionDialog dialog = new GtkFontSelectionDialog ();
|
| OS.memmove (dialog, handle, GtkFontSelectionDialog.sizeof);
|
| if (fontData != null) {
|
| byte[] buffer = Converter.wcsToMbcs(null, fontData.getXlfd(), true);
|
| OS.gtk_font_selection_set_font_name(dialog.fontsel, buffer);
|
| }
|
| Callback destroyCallback = new Callback (this, "destroyFunc", 2);
|
| int destroyFunc = destroyCallback.getAddress ();
|
| byte [] destroy = Converter.wcsToMbcs (null, "destroy", true);
|
| OS.gtk_signal_connect (handle, destroy, destroyFunc, handle);
|
| byte [] clicked = Converter.wcsToMbcs (null, "clicked", true);
|
| Callback okCallback = new Callback (this, "okFunc", 2);
|
| int okFunc = okCallback.getAddress ();
|
| Callback cancelCallback = new Callback (this, "cancelFunc", 2);
|
| int cancelFunc = cancelCallback.getAddress ();
|
| OS.gtk_signal_connect (dialog.ok_button, clicked, okFunc, handle);
|
| OS.gtk_signal_connect (dialog.cancel_button, clicked, cancelFunc, handle);
|
| fontData = null;
|
| OS.gtk_widget_show_now (handle);
|
| OS.gtk_main ();
|
| destroyCallback.dispose ();
|
| okCallback.dispose ();
|
| cancelCallback.dispose ();
|
| 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 |
| */ |
| public void setFontData (FontData fontData) {
|
| this.fontData = fontData;
|
| }
|
| }
|