/*******************************************************************************
* 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.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.wpf.OS;
/**
* 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 <em>not</em> intended to be subclassed.
* </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 dialog = OS.gcnew_FontDialog ();
OS.FontDialog_ShowColor (dialog, true);
if (fontData != null) {
int fontFamily = parent.createDotNetString (fontData.fontFamily, false);
int fontStyle = 0;
int fontWeight = OS.FontWeight_ToOpenTypeWeight (OS.FontWeights_Bold);
if (fontWeight == fontData.weight) fontStyle |= OS.FontStyle_Bold;
if (fontData.style == OS.FontStyles_Italic) fontStyle |= OS.FontStyle_Italic;
if (fontData.style == OS.FontStyles_Normal) fontStyle |= OS.FontStyle_Regular;
//TODO strikethrough/underline
int font = OS.gcnew_Font (fontFamily, fontData.height, fontStyle);
OS.FontDialog_Font (dialog, font);
OS.GCHandle_Free (font);
OS.GCHandle_Free (fontFamily);
}
if (rgb != null) {
int color = OS.DrawingColor_FromArgb (174, rgb.red, rgb.blue, rgb.green);
OS.FontDialog_Color (dialog, color);
OS.GCHandle_Free (color);
}
int result = OS.FormsCommonDialog_ShowDialog (dialog);
boolean success = result == OS.DialogResult_OK;
if (success) {
int font = OS.FontDialog_Font (dialog);
int fontFamilyPtr = OS.Font_FontFamily (font);
int fontFamilyName = OS.DrawingFontFamily_Name (fontFamilyPtr);
String fontFamily = Widget.createJavaString (fontFamilyName);
int fontStyle = OS.Font_Style (font);
int fontDataStyle;
if ((fontStyle & OS.FontStyle_Italic) != 0) {
fontDataStyle = OS.FontStyles_Italic;
} else {
fontDataStyle = OS.FontStyles_Normal;
}
int weight;
if ((fontStyle & OS.FontStyle_Bold) != 0) {
weight = OS.FontWeight_ToOpenTypeWeight (OS.FontWeights_Bold);
} else {
weight = OS.FontWeight_ToOpenTypeWeight (OS.FontWeights_Normal);
}
int height = OS.Font_Size (font);
OS.GCHandle_Free(fontFamilyName);
OS.GCHandle_Free(fontFamilyPtr);
OS.GCHandle_Free(font);
fontData = FontData.wpf_new (fontFamily, fontDataStyle, weight, 1, height);
int color = OS.FontDialog_Color (dialog);
int argb = OS.DrawingColor_ToArgb (color);
int red = (argb & 0xFF0000) >> 16;
int green = (argb & 0xFF00) >> 8;
int blue = argb & 0xFF;
OS.GCHandle_Free (color);
rgb = new RGB (red, green, blue);
}
OS.GCHandle_Free (dialog);
return success ? fontData : null;
}
/**
* 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;
}
}