Showing the changes to java/pkg/sun/awt/image/OffScreenImage.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,115 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 1996, 2007, 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.awt.image; | |
| 27 | + | |
| 28 | +import java.awt.Component; | |
| 29 | +import java.awt.Color; | |
| 30 | +import java.awt.SystemColor; | |
| 31 | +import java.awt.Font; | |
| 32 | +import java.awt.Graphics; | |
| 33 | +import java.awt.Graphics2D; | |
| 34 | +import java.awt.GraphicsEnvironment; | |
| 35 | +import java.awt.image.BufferedImage; | |
| 36 | +import java.awt.image.ImageProducer; | |
| 37 | +import java.awt.image.ColorModel; | |
| 38 | +import java.awt.image.WritableRaster; | |
| 39 | +import sun.java2d.SunGraphics2D; | |
| 40 | +import sun.java2d.SurfaceData; | |
| 41 | + | |
| 42 | +/** | |
| 43 | + * This is a special variant of BufferedImage that keeps a reference to | |
| 44 | + * a Component. The Component's foreground and background colors and | |
| 45 | + * default font are used as the defaults for this image. | |
| 46 | + */ | |
| 47 | +public class OffScreenImage extends BufferedImage { | |
| 48 | + | |
| 49 | + protected Component c; | |
| 50 | + private OffScreenImageSource osis; | |
| 51 | + private Font defaultFont; | |
| 52 | + | |
| 53 | + /** | |
| 54 | + * Constructs an OffScreenImage given a color model and tile, | |
| 55 | + * for offscreen rendering to be used with a given component. | |
| 56 | + * The component is used to obtain the foreground color, background | |
| 57 | + * color and font. | |
| 58 | + */ | |
| 59 | + public OffScreenImage(Component c, ColorModel cm, WritableRaster raster, | |
| 60 | + boolean isRasterPremultiplied) | |
| 61 | + { | |
| 62 | + super(cm, raster, isRasterPremultiplied, null); | |
| 63 | + this.c = c; | |
| 64 | + initSurface(raster.getWidth(), raster.getHeight()); | |
| 65 | + } | |
| 66 | + | |
| 67 | + public Graphics getGraphics() { | |
| 68 | + return createGraphics(); | |
| 69 | + } | |
| 70 | + | |
| 71 | + public Graphics2D createGraphics() { | |
| 72 | + if (c == null) { | |
| 73 | + GraphicsEnvironment env = | |
| 74 | + GraphicsEnvironment.getLocalGraphicsEnvironment(); | |
| 75 | + return env.createGraphics(this); | |
| 76 | + } | |
| 77 | + | |
| 78 | + Color bg = c.getBackground(); | |
| 79 | + if (bg == null) { | |
| 80 | + bg = SystemColor.window; | |
| 81 | + } | |
| 82 | + | |
| 83 | + Color fg = c.getForeground(); | |
| 84 | + if (fg == null) { | |
| 85 | + fg = SystemColor.windowText; | |
| 86 | + } | |
| 87 | + | |
| 88 | + Font font = c.getFont(); | |
| 89 | + if (font == null) { | |
| 90 | + if (defaultFont == null) { | |
| 91 | + defaultFont = new Font("Dialog", Font.PLAIN, 12); | |
| 92 | + } | |
| 93 | + font = defaultFont; | |
| 94 | + } | |
| 95 | + | |
| 96 | + return new SunGraphics2D(SurfaceData.getPrimarySurfaceData(this), | |
| 97 | + fg, bg, font); | |
| 98 | + } | |
| 99 | + | |
| 100 | + private void initSurface(int width, int height) { | |
| 101 | + Graphics2D g2 = createGraphics(); | |
| 102 | + try { | |
| 103 | + g2.clearRect(0, 0, width, height); | |
| 104 | + } finally { | |
| 105 | + g2.dispose(); | |
| 106 | + } | |
| 107 | + } | |
| 108 | + | |
| 109 | + public ImageProducer getSource() { | |
| 110 | + if (osis == null) { | |
| 111 | + osis = new OffScreenImageSource(this); | |
| 112 | + } | |
| 113 | + return osis; | |
| 114 | + } | |
| 115 | +} | |