| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.snippets; |
| |
| /* |
| * Change hue, saturation and brightness of a color |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.2 |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet208 { |
| |
| public static void main (String [] args) { |
| PaletteData palette = new PaletteData(0xff, 0xff00, 0xff0000); |
| |
| // ImageData showing variations of hue |
| ImageData hueData = new ImageData(360, 100, 24, palette); |
| float hue = 0; |
| for (int x = 0; x < hueData.width; x++) { |
| for (int y = 0; y < hueData.height; y++) { |
| int pixel = palette.getPixel(new RGB(hue, 1f, 1f)); |
| hueData.setPixel(x, y, pixel); |
| } |
| hue += 360f / hueData.width; |
| } |
| |
| // ImageData showing saturation on x axis and brightness on y axis |
| ImageData saturationBrightnessData = new ImageData(360, 360, 24, palette); |
| float saturation = 0f; |
| float brightness = 1f; |
| for (int x = 0; x < saturationBrightnessData.width; x++) { |
| brightness = 1f; |
| for (int y = 0; y < saturationBrightnessData.height; y++) { |
| int pixel = palette.getPixel(new RGB(360f, saturation, brightness)); |
| saturationBrightnessData.setPixel(x, y, pixel); |
| brightness -= 1f / saturationBrightnessData.height; |
| } |
| saturation += 1f / saturationBrightnessData.width; |
| } |
| |
| Display display = new Display(); |
| Image hueImage = new Image(display, hueData); |
| Image saturationImage = new Image(display, saturationBrightnessData); |
| Shell shell = new Shell(display); |
| shell.setText("Hue, Saturation, Brightness"); |
| GridLayout gridLayout = new GridLayout(2, false); |
| gridLayout.verticalSpacing = 10; |
| gridLayout.marginWidth = gridLayout.marginHeight = 16; |
| shell.setLayout(gridLayout); |
| |
| Label label = new Label(shell, SWT.CENTER); |
| label.setImage(hueImage); |
| GridData data = new GridData(SWT.RIGHT, SWT.CENTER, false, false, 2, 1); |
| label.setLayoutData(data); |
| |
| label = new Label(shell, SWT.CENTER); //spacer |
| label = new Label(shell, SWT.CENTER); |
| label.setText("Hue"); |
| data = new GridData(SWT.CENTER, SWT.CENTER, false, false); |
| label.setLayoutData(data); |
| label = new Label(shell, SWT.CENTER); //spacer |
| data = new GridData(SWT.CENTER, SWT.CENTER, false, false, 2, 1); |
| label.setLayoutData(data); |
| |
| label = new Label(shell, SWT.LEFT); |
| label.setText("Brightness"); |
| data = new GridData(SWT.LEFT, SWT.CENTER, false, false); |
| label.setLayoutData(data); |
| |
| label = new Label(shell, SWT.CENTER); |
| label.setImage(saturationImage); |
| data = new GridData(SWT.CENTER, SWT.CENTER, false, false); |
| label.setLayoutData (data); |
| |
| label = new Label(shell, SWT.CENTER); //spacer |
| label = new Label(shell, SWT.CENTER); |
| label.setText("Saturation"); |
| data = new GridData(SWT.CENTER, SWT.CENTER, false, false); |
| label.setLayoutData(data); |
| |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) { |
| display.sleep(); |
| } |
| } |
| hueImage.dispose(); |
| saturationImage.dispose(); |
| display.dispose(); |
| } |
| |
| } |
| |
| |