1 /*
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.lwawt.macosx;
27
28 import java.awt.*;
29 import java.awt.geom.Dimension2D;
30 import java.awt.image.*;
31
32 import sun.awt.image.SunWritableRaster;
33
34 public class CImage extends CFRetainedResource {
35 private static native long nativeCreateNSImageFromArray(int[] buffer, int w, int h);
36 private static native long nativeCreateNSImageFromFileContents(String file);
37 private static native long nativeCreateNSImageOfFileFromLaunchServices(String file);
38 private static native long nativeCreateNSImageFromImageName(String name);
39 private static native long nativeCreateNSImageFromIconSelector(int selector);
40 private static native void nativeCopyNSImageIntoArray(long image, int[] buffer, int w, int h);
41 private static native Dimension2D nativeGetNSImageSize(long image);
42 private static native void nativeSetNSImageSize(long image, double w, double h);
43
44 static Creator creator = new Creator();
45 static Creator getCreator() {
46 return creator;
47 }
48
49 public static class Creator {
50 Creator() { }
51
52 // This is used to create a CImage with an NSImage pointer. It MUST be a CFRetained
53 // NSImage, and the CImage takes ownership of the non-GC retain. If callers need the
54 // NSImage themselves, they MUST call retain on the NSImage themselves.
55 public BufferedImage createImageUsingNativeSize(final long image) {
56 if (image == 0) return null;
57 final Dimension2D size = nativeGetNSImageSize(image);
58 return createBufferedImage(image, size.getWidth(), size.getHeight());
59 }
60
61 // the width and height passed in as a parameter could differ than the width and the height of the NSImage (image), in that case, the image will be scaled
62 BufferedImage createBufferedImage(long image, double width, double height) {
63 if (image == 0) throw new Error("Unable to instantiate CImage with null native image reference.");
64 return createImageWithSize(image, width, height);
65 }
66
67 public BufferedImage createImageWithSize(final long image, final double width, final double height) {
68 final CImage img = new CImage(image);
69 img.resize(width, height);
70 return img.toImage();
71 }
72
73 // This is used to create a CImage that represents the icon of the given file.
74 public BufferedImage createImageOfFile(final String file, final int width, final int height) {
75 return createBufferedImage(nativeCreateNSImageOfFileFromLaunchServices(file), width, height);
76 }
77
78 public BufferedImage createImageFromFile(final String file, final double width, final double height) {
79 final long image = nativeCreateNSImageFromFileContents(file);
80 nativeSetNSImageSize(image, width, height);
81 return createBufferedImage(image, width, height);
82 }
83
84 public BufferedImage createSystemImageFromSelector(final String iconSelector, final int width, final int height) {
85 return createBufferedImage(nativeCreateNSImageFromIconSelector(getSelectorAsInt(iconSelector)), width, height);
86 }
87
88 public Image createImageFromName(final String name, final int width, final int height) {
89 return createBufferedImage(nativeCreateNSImageFromImageName(name), width, height);
90 }
91
92 public Image createImageFromName(final String name) {
93 return createImageUsingNativeSize(nativeCreateNSImageFromImageName(name));
94 }
95
96 // This is used to create a CImage from a Image
97 public CImage createFromImage(final Image image) {
98 if (image == null) return null;
99
100 MediaTracker mt = new MediaTracker(new Label());
101 final int id = 0;
102 mt.addImage(image, id);
103
104 try {
105 mt.waitForID(id);
106 } catch (InterruptedException e) {
107 }
108
109 if (mt.isErrorID(id)) {
110 return null;
111 }
112
113 int w = image.getWidth(null);
114 int h = image.getHeight(null);
115 BufferedImage bimg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
116 Graphics2D g2 = bimg.createGraphics();
117 g2.setComposite(AlphaComposite.Src);
118 g2.drawImage(image, 0, 0, null);
119 g2.dispose();
120 int[] buffer = ((DataBufferInt)bimg.getRaster().getDataBuffer()).getData();
121 return new CImage(nativeCreateNSImageFromArray(buffer, w, h));
122 }
123
124 static int getSelectorAsInt(final String fromString) {
125 final byte[] b = fromString.getBytes();
126 final int len = Math.min(b.length, 4);
127 int result = 0;
128 for (int i = 0; i < len; i++) {
129 if (i > 0) result <<= 8;
130 result |= (b[i] & 0xff);
131 }
132 return result;
133 }
134 }
135
136 CImage(long nsImagePtr) {
137 super(nsImagePtr, true);
138 }
139
140 /** @return A BufferedImage created from nsImagePtr, or null. */
141 public BufferedImage toImage() {
142 if (ptr == 0) return null;
143
144 final Dimension2D size = nativeGetNSImageSize(ptr);
145 final int w = (int)size.getWidth();
146 final int h = (int)size.getHeight();
147
148 final BufferedImage bimg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
149 final DataBufferInt dbi = (DataBufferInt)bimg.getRaster().getDataBuffer();
150 final int[] buffer = SunWritableRaster.stealData(dbi, 0);
151 nativeCopyNSImageIntoArray(ptr, buffer, w, h);
152 SunWritableRaster.markDirty(dbi);
153 return bimg;
154 }
155
156 /** If nsImagePtr != 0 then scale this NSImage. @return *this* */
157 CImage resize(final double w, final double h) {
158 if (ptr != 0) nativeSetNSImageSize(ptr, w, h);
159 return this;
160 }
161 }