org.eclipse.swt.widgets.ColorDialog Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2012 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.cocoa.*;
/**
* Instances of this class allow the user to select a color
* from a predefined set of available colors.
*
* - Styles:
* - (none)
* - Events:
* - (none)
*
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see SWT Example: ControlExample, Dialog tab
* @see Sample code and further information
* @noextend This class is not intended to be subclassed by clients.
*/
public class ColorDialog extends Dialog {
RGB rgb;
RGB [] rgbs;
boolean selected;
/**
* Constructs a new instance of this class given only its parent.
*
* @param parent a composite control which will be the parent of the new instance
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*
* @see SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(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.
*
* The style value is either one of the style constants defined in
* class SWT
which is applicable to instances of this
* class, or must be built by bitwise OR'ing together
* (that is, using the int
"|" operator) two or more
* of those SWT
style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
*
*
* @param parent a composite control which will be the parent of the new instance (cannot be null)
* @param style the style of control to construct
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*
* @see SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(Shell parent, int style) {
super (parent, checkStyle (parent, style));
checkSubclass ();
}
void changeColor(long /*int*/ id, long /*int*/ sel, long /*int*/ sender) {
selected = true;
}
/**
* Returns the currently selected color in the receiver.
*
* @return the RGB value for the selected color, may be null
*
* @see PaletteData#getRGBs
*/
public RGB getRGB() {
return rgb;
}
/**
* Returns an array of RGB
s which are the list of
* custom colors selected by the user in the receiver, or null
* if no custom colors were selected.
*
* @return the array of RGBs, which may be null
*
* @since 3.8
*/
public RGB[] getRGBs() {
return rgbs;
}
/**
* Makes the receiver visible and brings it to the front
* of the display.
*
* @return the selected color, or null if the dialog was
* cancelled, no color was selected, or an error
* occurred
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public RGB open() {
NSColorPanel panel = NSColorPanel.sharedColorPanel();
Display display = parent != null ? parent.getDisplay() : Display.getCurrent();
if (rgb != null) {
NSColor color = NSColor.colorWithDeviceRed(rgb.red / 255f, rgb.green / 255f, rgb.blue / 255f, 1);
panel.setColor(color);
}
NSString appName = Display.getApplicationName();
NSColorList colorList = NSColorList.colorListNamed(appName);
if (colorList == null) {
colorList = (NSColorList)new NSColorList().alloc();
colorList.initWithName(appName);
panel.attachColorList(colorList);
} else {
colorList.retain();
}
if (rgbs != null) {
NSArray keys = colorList.allKeys();
int length = (int)/*64*/keys.count();
for (int i=length-1; i>=0; i--) {
colorList.removeColorWithKey(new NSString(keys.objectAtIndex(i)));
}
for (int i=0; i 0) {
key = key.stringByAppendingString(NSString.stringWith(" "+i));
}
colorList.insertColor(color, key, i);
}
}
}
SWTPanelDelegate delegate = (SWTPanelDelegate)new SWTPanelDelegate().alloc().init();
long /*int*/ jniRef = OS.NewGlobalRef(this);
if (jniRef == 0) error(SWT.ERROR_NO_HANDLES);
OS.object_setInstanceVariable(delegate.id, Display.SWT_OBJECT, jniRef);
panel.setDelegate(delegate);
rgb = null;
selected = false;
panel.orderFront(null);
display.setModalDialog(this);
NSApplication.sharedApplication().runModalForWindow(panel);
display.setModalDialog(null);
panel.setDelegate(null);
delegate.release();
OS.DeleteGlobalRef(jniRef);
if (selected) {
NSColor color = panel.color();
if (color != null) {
double /*float*/ [] handle = display.getNSColorRGB(color);
rgb = new RGB((int)(handle[0] * 255), (int)(handle[1] * 255), (int)(handle[2] * 255));
}
}
NSArray keys = colorList.allKeys();
int length = (int)/*64*/keys.count();
rgbs = new RGB[length];
for (int i=0; iRGB
s, which may be null to let the platform select
* a default when open() is called.
*
* @param rgbs the array of RGBs, which may be null
*
* @exception IllegalArgumentException
-
*
- ERROR_INVALID_ARGUMENT - if an RGB in the rgbs array is null *