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1: /* RasterGraphics.java -- A Graphics2D impl for Rasters 2: Copyright (C) 2006 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package gnu.java.awt.java2d; 40: 41: import java.awt.GraphicsConfiguration; 42: import java.awt.Rectangle; 43: import java.awt.image.ColorModel; 44: import java.awt.image.WritableRaster; 45: 46: /** 47: * A Graphics2D implementation that operates on Raster objects. This is 48: * primarily used for BufferedImages, but can theoretically be used on 49: * arbitrary WritableRasters. 50: * 51: * @author Roman Kennke (kennke@aicas.com) 52: */ 53: public class RasterGraphics 54: extends AbstractGraphics2D 55: { 56: 57: /** 58: * The raster on which we operate. 59: */ 60: private WritableRaster raster; 61: 62: /** 63: * The color model of this Graphics instance. 64: */ 65: private ColorModel colorModel; 66: 67: public RasterGraphics(WritableRaster r, ColorModel cm) 68: { 69: super(); 70: raster = r; 71: colorModel = cm; 72: init(); 73: } 74: 75: @Override 76: public void renderScanline(int y, ScanlineCoverage c) 77: { 78: if (y >= getDeviceBounds().width) 79: return; 80: 81: super.renderScanline(y, c); 82: } 83: 84: /** 85: * Returns the color model of this Graphics object. 86: * 87: * @return the color model of this Graphics object 88: */ 89: protected ColorModel getColorModel() 90: { 91: return colorModel; 92: } 93: 94: /** 95: * Returns a WritableRaster that is used by this class to perform the 96: * rendering in. It is not necessary that the target surface immediately 97: * reflects changes in the raster. Updates to the raster are notified via 98: * {@link AbstractGraphics2D#updateRaster}. 99: * 100: * @return the destination raster 101: */ 102: protected WritableRaster getDestinationRaster() 103: { 104: return raster; 105: } 106: 107: public GraphicsConfiguration getDeviceConfiguration() 108: { 109: // TODO Auto-generated method stub 110: return null; 111: } 112: 113: @Override 114: protected Rectangle getDeviceBounds() 115: { 116: return this.raster.getBounds(); 117: } 118: }