/*******************************************************************************
* 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.carbon.*;
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 <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;
boolean open;
int fontID, fontSize;
/**
* 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;
}
int fontProc (int nextHandler, int theEvent, int userData) {
int kind = OS.GetEventKind (theEvent);
switch (kind) {
case OS.kEventFontPanelClosed:
open = false;
break;
case OS.kEventFontSelection:
int [] fontID = new int [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamATSUFontID, OS.typeUInt32, null, 4, null, fontID) == OS.noErr) {
this.fontID = fontID [0];
}
int [] fontSize = new int [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamATSUFontSize, OS.typeFixed, null, 4, null, fontSize) == OS.noErr) {
this.fontSize = fontSize [0];
}
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);
} else {
int [] dict = new int [1];
if (OS.GetEventParameter (theEvent, OS.kEventParamDictionary, OS.typeCFDictionaryRef, null, 4, actualSize, dict) == OS.noErr) {
int [] attrib = new int [1];
if (OS.CFDictionaryGetValueIfPresent (dict [0], OS.kFontPanelAttributesKey (), attrib)) {
int [] tags = new int [1];
int [] sizes = new int [1];
int [] values = new int [1];
if (OS.CFDictionaryGetValueIfPresent (attrib [0], OS.kFontPanelAttributeTagsKey (), tags) &&
OS.CFDictionaryGetValueIfPresent (attrib [0], OS.kFontPanelAttributeSizesKey (), sizes) &&
OS.CFDictionaryGetValueIfPresent (attrib [0], OS.kFontPanelAttributeValuesKey (), values)
) {
int count = OS.CFDataGetLength (tags [0]) / 4;
int tagPtr = OS.CFDataGetBytePtr (tags[0]);
int sizePtr = OS.CFDataGetBytePtr (sizes [0]);
int [] tag = new int [1];
int [] size = new int [1];
int valueOffset = 0;
for (int i = 0 ; i < count ; i++) {
OS.memmove (tag, tagPtr + (i * 4), 4);
OS.memmove (size, sizePtr + (i * 4), 4);
if (tag [0] == OS.kATSUColorTag && size[0] == RGBColor.sizeof) {
int valuePtr = OS.CFDataGetBytePtr (values [0]);
OS.memmove (color, valuePtr + valueOffset, RGBColor.sizeof);
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 ;
}
valueOffset = size[0];
}
}
}
}
}
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 () {
Display display = parent != null ? parent.display : Display.getCurrent ();
if (fontData != null) {
Font font = new Font (display, fontData);
int ptr = OS.NewPtr (4);
OS.memmove (ptr, new int []{font.atsuiStyle}, 4);
//TODO - not sure how to set initial color in font panel
// if (rgb != null) {
// RGBColor color = new RGBColor ();
// rgb.red = (short) (rgb.red * 0xffff);
// rgb.green = (short) (rgb.green * 0xffff);
// rgb.blue = (short) (rgb.blue * 0xffff);
// int ptr1 = OS.NewPtr (RGBColor.sizeof);
// OS.memcpy(ptr, color, RGBColor.sizeof);
// int [] tags = new int []{OS.kATSUColorTag};
// int [] sizes = new int []{RGBColor.sizeof};
// int [] values = new int []{ptr1};
// OS.ATSUSetAttributes (font.atsuiStyle, tags.length, tags, sizes, values);
// OS.DisposePtr(ptr1);
// }
OS.SetFontInfoForSelection (OS.kFontSelectionATSUIType, 1, ptr, 0);
OS.DisposePtr (ptr);
font.dispose ();
}
int[] mask = new int[] {
OS.kEventClassFont, OS.kEventFontSelection,
OS.kEventClassFont, OS.kEventFontPanelClosed,
};
Callback fontPanelCallback = new Callback (this, "fontProc", 3);
int fontPanelCallbackAddress = fontPanelCallback.getAddress ();
if (fontPanelCallbackAddress == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS);
int appTarget = OS.GetApplicationEventTarget ();
int [] outRef = new int [1];
OS.InstallEventHandler (appTarget, fontPanelCallbackAddress, mask.length / 2, mask, 0, outRef);
fontSize = fontID = 0;
fontData = null;
rgb = null;
open = true;
/*
* Feature in the Macintosh. The Fonts window is not modal and it cannot
* be accessed through direct API. The fix is to figure out the Fonts
* window by checking all available windows and set its modality
* explicitily.
*/
int count = 0;
int window = OS.GetPreviousWindow (0);
while (window != 0) {
count++;
window = OS.GetPreviousWindow (window);
}
int [] windows = new int [count];
boolean[] visible = new boolean [count];
count = 0;
window = OS.GetPreviousWindow (0);
while (window != 0) {
windows [count] = window;
visible [count] = OS.IsWindowVisible (window);
count++;
window = OS.GetPreviousWindow (window);
}
display.setModalDialog(this);
OS.FPShowHideFontPanel ();
int fontsWindow = 0;
window = OS.GetPreviousWindow (0);
while (window != 0 && fontsWindow == 0) {
if (OS.IsWindowVisible (window)) {
boolean found = false;
for (int i = 0; i < windows.length; i++) {
if (windows [i] == window) {
found = true;
if (!visible [i]) {
fontsWindow = window;
break;
}
}
}
if (!found) {
fontsWindow = window;
break;
}
}
window = OS.GetPreviousWindow (window);
}
if (fontsWindow != 0) {
int inModalKind = OS.kWindowModalityNone;
if ((style & SWT.PRIMARY_MODAL) != 0) inModalKind = OS.kWindowModalityWindowModal;
if ((style & SWT.APPLICATION_MODAL) != 0) inModalKind = OS.kWindowModalityAppModal;
if ((style & SWT.SYSTEM_MODAL) != 0) inModalKind = OS.kWindowModalitySystemModal;
if (inModalKind != OS.kWindowModalityNone) {
int inUnavailableWindow = 0;
if (parent != null) inUnavailableWindow = OS.GetControlOwner (parent.handle);
OS.SetWindowModality (fontsWindow, inModalKind, inUnavailableWindow);
OS.SelectWindow (fontsWindow);
}
}
while (!parent.isDisposed() && open) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.setModalDialog(null);
OS.RemoveEventHandler (outRef [0]);
fontPanelCallback.dispose ();
if (fontID != 0 && fontSize != 0) {
int atsFont = OS.FMGetATSFontRefFromFont (fontID);
Font font = Font.carbon_new (display, atsFont, (short) 0, (float) OS.Fix2X (fontSize));
fontData = font.getFontData ()[0];
font.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 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;
}
}