Showing the changes to java/pkg/sun/awt/image/OffScreenImage.java (1 of 18352 files). Show all
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| 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 | } | ||