Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: eeff22e477d6ee57110e0b30074ae11880bf0e6d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * example snippet: convert between SWT Image and AWT BufferedImage
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import java.awt.*;
import java.awt.image.*;

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.*;

public class Snippet156 {

static BufferedImage convertToAWT(ImageData data) {
	ColorModel colorModel = null;
	PaletteData palette = data.palette;
	if (palette.isDirect) {
		colorModel = new DirectColorModel(data.depth, palette.redMask, palette.greenMask, palette.blueMask);
		BufferedImage bufferedImage = new BufferedImage(colorModel, colorModel.createCompatibleWritableRaster(data.width, data.height), false, null);
		for (int y = 0; y < data.height; y++) {
			for (int x = 0; x < data.width; x++) {
				int pixel = data.getPixel(x, y);
				RGB rgb = palette.getRGB(pixel);
				bufferedImage.setRGB(x, y,  rgb.red << 16 | rgb.green << 8 | rgb.blue);
			}
		}
		return bufferedImage;
	} else {
		RGB[] rgbs = palette.getRGBs();
		byte[] red = new byte[rgbs.length];
		byte[] green = new byte[rgbs.length];
		byte[] blue = new byte[rgbs.length];
		for (int i = 0; i < rgbs.length; i++) {
			RGB rgb = rgbs[i];
			red[i] = (byte)rgb.red;
			green[i] = (byte)rgb.green;
			blue[i] = (byte)rgb.blue;
		}
		if (data.transparentPixel != -1) {
			colorModel = new IndexColorModel(data.depth, rgbs.length, red, green, blue, data.transparentPixel);
		} else {
			colorModel = new IndexColorModel(data.depth, rgbs.length, red, green, blue);
		}
		BufferedImage bufferedImage = new BufferedImage(colorModel, colorModel.createCompatibleWritableRaster(data.width, data.height), false, null);
		WritableRaster raster = bufferedImage.getRaster();
		int[] pixelArray = new int[1];
		for (int y = 0; y < data.height; y++) {
			for (int x = 0; x < data.width; x++) {
				int pixel = data.getPixel(x, y);
				pixelArray[0] = pixel;
				raster.setPixel(x, y, pixelArray);
			}
		}
		return bufferedImage;
	}
}

static ImageData convertToSWT(BufferedImage bufferedImage) {
	if (bufferedImage.getColorModel() instanceof DirectColorModel) {
		DirectColorModel colorModel = (DirectColorModel)bufferedImage.getColorModel();
		PaletteData palette = new PaletteData(colorModel.getRedMask(), colorModel.getGreenMask(), colorModel.getBlueMask());
		ImageData data = new ImageData(bufferedImage.getWidth(), bufferedImage.getHeight(), colorModel.getPixelSize(), palette);
		for (int y = 0; y < data.height; y++) {
			for (int x = 0; x < data.width; x++) {
				int rgb = bufferedImage.getRGB(x, y);
				int pixel = palette.getPixel(new RGB((rgb >> 16) & 0xFF, (rgb >> 8) & 0xFF, rgb & 0xFF));
				data.setPixel(x, y, pixel);
				if (colorModel.hasAlpha()) {
					data.setAlpha(x, y, (rgb >> 24) & 0xFF);
				}
			}
		}
		return data;
	} else if (bufferedImage.getColorModel() instanceof IndexColorModel) {
		IndexColorModel colorModel = (IndexColorModel)bufferedImage.getColorModel();
		int size = colorModel.getMapSize();
		byte[] reds = new byte[size];
		byte[] greens = new byte[size];
		byte[] blues = new byte[size];
		colorModel.getReds(reds);
		colorModel.getGreens(greens);
		colorModel.getBlues(blues);
		RGB[] rgbs = new RGB[size];
		for (int i = 0; i < rgbs.length; i++) {
			rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF, blues[i] & 0xFF);
		}
		PaletteData palette = new PaletteData(rgbs);
		ImageData data = new ImageData(bufferedImage.getWidth(), bufferedImage.getHeight(), colorModel.getPixelSize(), palette);
		data.transparentPixel = colorModel.getTransparentPixel();
		WritableRaster raster = bufferedImage.getRaster();
		int[] pixelArray = new int[1];
		for (int y = 0; y < data.height; y++) {
			for (int x = 0; x < data.width; x++) {
				raster.getPixel(x, y, pixelArray);
				data.setPixel(x, y, pixelArray[0]);
			}
		}
		return data;
	}
	return null;
}

static ImageData createSampleImage(Display display) {
	Image image = new Image(display, 100, 100);
	Rectangle bounds = image.getBounds();
	GC gc = new GC(image);
	gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
	gc.fillRectangle(bounds);
	gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
	gc.fillOval(0, 0, bounds.width, bounds.height);
	gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
	gc.drawLine(0, 0, bounds.width, bounds.height);
	gc.drawLine(bounds.width, 0, 0, bounds.height);
	gc.dispose();
	ImageData data = image.getImageData();
	image.dispose();
	return data;
}

public static void main(String[] args) {
	Display display = new Display();
	Shell shell = new Shell(display);
	shell.setText("SWT Image");
	ImageData data;
	if (args.length > 0) {
		String fileName = args[0];
		data = new ImageData(fileName);
	} else {
		data = createSampleImage(display);
	}
	final Image swtImage = new Image(display, data);
	final BufferedImage awtImage = convertToAWT(data);
	final Image swtImage2 = new Image(display, convertToSWT(awtImage));
	shell.addListener(SWT.Paint, e -> {
		int y = 10;
		if (swtImage != null) {
			e.gc.drawImage(swtImage, 10, y);
			y += swtImage.getBounds().height + 10;
		}
		if (swtImage2 != null) {
			e.gc.drawImage(swtImage2, 10, y);
		}
	});
	Frame frame = new Frame() {
		@Override
		public void paint(Graphics g) {
			Insets insets = getInsets();
			if (awtImage != null) {
				g.drawImage(awtImage, 10 + insets.left, 10 + insets.top, null);
			}
		}
	};
	frame.setTitle("AWT Image");
	shell.setLocation(50, 50);
	Rectangle bounds = swtImage.getBounds();
	shell.setSize(bounds.width + 50, bounds.height * 2 + 100);
	Point size = shell.getSize();
	Point location = shell.getLocation();
	Insets insets = frame.getInsets();
	frame.setLocation(location.x + size.x + 10, location.y);
	frame.setSize(size.x - (insets.left + insets.right), size.y - (insets.top + insets.bottom));
	frame.setVisible(true);
	shell.open();
	while (!shell.isDisposed()) {
		if (!display.readAndDispatch()) display.sleep();
	}
	if (swtImage != null) swtImage.dispose();
	if (swtImage2 != null) swtImage.dispose();
	frame.dispose();
	display.dispose();
	/* Note: If you are using JDK 1.3.x, you need to use System.exit(0) at the end of your program to exit AWT.
	 * This is because in 1.3.x, AWT does not exit when the frame is disposed, because the AWT thread is not a daemon.
	 * This was fixed in JDK 1.4.x with the addition of the AWT Shutdown thread.
	 */
}
}

Back to the top