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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-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.carbon.OS;
import org.eclipse.swt.internal.carbon.FontSelectionQDStyle;
import org.eclipse.swt.internal.Callback;
import org.eclipse.swt.internal.carbon.RGBColor;
/**
* 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>
*/
public class FontDialog extends Dialog {
FontData fontData;
RGB rgb;
boolean open;
/**
* 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, 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 the currently selected color in the receiver.
*
* @return the RGB value for the selected color, may be null
*
* @see PaletteData#getRGBs
*
* @since 2.1
*/
public RGB getRGB () {
return rgb;
}
int fontProc (int nextHandler, int theEvent, int userData) {
int kind = OS.GetEventKind (theEvent);
switch (kind) {
case OS.kEventFontPanelClosed:
open = false;
break;
case OS.kEventFontSelection:
if (fontData == null) fontData = new FontData();
int [] fontID = new int [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamATSUFontID, OS.typeUInt32, null, 4, null, fontID) == OS.noErr) {
int [] actualLength = new int [1];
OS.ATSUFindFontName (fontID [0], OS.kFontFamilyName, OS.kFontNoPlatformCode, OS.kFontNoScriptCode, OS.kFontNoLanguageCode, 0, null, actualLength, null);
byte [] buffer = new byte [actualLength [0]];
OS.ATSUFindFontName (fontID [0], OS.kFontFamilyName, OS.kFontNoPlatformCode, OS.kFontNoScriptCode, OS.kFontNoLanguageCode, buffer.length, buffer, actualLength, null);
String name = new String(buffer);
fontData.setName (name);
}
short [] fontStyle = new short [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamFMFontStyle, OS.typeSInt16, null, 2, null, fontStyle) == OS.noErr) {
int style = SWT.NORMAL;
if ((fontStyle [0] & OS.bold) != 0) style |= SWT.BOLD;
if ((fontStyle [0] & OS.italic) != 0) style |= SWT.ITALIC;
fontData.setStyle (style);
}
short [] fontSize = new short [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamFMFontSize, OS.typeSInt16, null, 2, null, fontSize) == OS.noErr) {
fontData.setHeight (fontSize [0]);
}
// NEEDS WORK - color not supported in native dialog for Carbon
RGBColor color = new RGBColor ();
int [] actualSize = new int [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamFontColor, OS.typeRGBColor, null, RGBColor.sizeof, actualSize, color) == OS.noErr) {
int red = (color.red >> 8) & 0xFF;
int green = (color.green >> 8) & 0xFF;
int blue = (color.blue >> 8) & 0xFF;
rgb = new RGB(red, green, blue);
}
break;
}
return OS.noErr;
}
/**
* 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 () {
FontSelectionQDStyle qdStyle = new FontSelectionQDStyle();
qdStyle.version = OS.kFontSelectionQDStyleVersionZero;
// NEEDS WORK - color not supported in native dialog for Carbon
if (rgb != null) {
qdStyle.hasColor = true;
qdStyle.color_red = (short)(rgb.red * 257);
qdStyle.color_green = (short)(rgb.green * 257);
qdStyle.color_blue = (short)(rgb.blue * 257);
}
if (fontData != null) {
String familyName = fontData.name;
byte [] buffer = new byte [256];
int length = familyName.length();
if (length > 255) length = 255;
buffer [0] = (byte)length;
for (int i=0; i<length; i++) {
buffer [i+1] = (byte) familyName.charAt(i);
}
int id = OS.FMGetFontFamilyFromName (buffer);
if (id == OS.kInvalidFontFamily) id = OS.GetAppFont();
qdStyle.instance_fontFamily = (short)id;
int style = fontData.style;
int fontStyle = OS.normal;
if ((style & SWT.BOLD) != 0) fontStyle |= OS.bold;
if ((style & SWT.ITALIC) != 0) fontStyle |= OS.italic;
qdStyle.instance_fontStyle = (short)fontStyle;
qdStyle.size = (short)fontData.height;
}
int ptr = OS.NewPtr(FontSelectionQDStyle.sizeof);
OS.memcpy (ptr, qdStyle, FontSelectionQDStyle.sizeof);
OS.SetFontInfoForSelection(OS.kFontSelectionQDType, 1, ptr, 0);
OS.DisposePtr (ptr);
int[] mask = new int[] {
OS.kEventClassFont, OS.kEventFontSelection,
OS.kEventClassFont, OS.kEventFontPanelClosed,
};
Callback fontPanelCallback = new Callback (this, "fontProc", 3);
int appTarget = OS.GetApplicationEventTarget ();
int [] outRef = new int [1];
OS.InstallEventHandler (appTarget, fontPanelCallback.getAddress(), mask.length / 2, mask, 0, outRef);
fontData = null;
rgb = null;
open = true;
OS.FPShowHideFontPanel ();
Display display = parent.display;
while (!parent.isDisposed() && open) {
if (!display.readAndDispatch ()) display.sleep ();
}
OS.RemoveEventHandler (outRef [0]);
fontPanelCallback.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
* @deprecated use #setFontList (FontData [])
*/
public void setFontData (FontData fontData) {
this.fontData = fontData;
}
/**
* Sets a 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
* @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 receiver's selected color to be the argument.
*
* @param rgb the new RGB value for the selected color, may be
* null to let the platform to select a default when
* open() is called
*
* @see PaletteData#getRGBs
*
* @since 2.1
*/
public void setRGB (RGB rgb) {
this.rgb = rgb;
}
}
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