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1: /* QtImageGraphics.java -- 2: Copyright (C) 2005 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: package gnu.java.awt.peer.qt; 39: 40: import java.awt.Color; 41: import java.awt.GraphicsConfiguration; 42: import java.awt.Graphics; 43: import java.awt.Graphics2D; 44: import java.awt.Image; 45: import java.awt.Paint; 46: import java.awt.Rectangle; 47: import java.util.Stack; 48: 49: /** 50: * QtComponentPainter is a Graphics2D context for painting to QtImage and 51: * QtVolatileImages. 52: */ 53: public class QtImageGraphics extends QtGraphics 54: { 55: Image parentImage; 56: Stack owners; 57: QtImageGraphics topParent; 58: 59: public QtImageGraphics(Image image) 60: { 61: if(!( image instanceof QtVolatileImage || image instanceof QtImage)) 62: throw new IllegalArgumentException("Cannot create QtImageGraphics for a non-QImage context."); 63: 64: owners = new Stack(); 65: owners.push(this); 66: topParent = null; 67: int w, h; 68: if(image instanceof QtImage) 69: { 70: w = ((QtImage)image).width; 71: h = ((QtImage)image).height; 72: initImage((QtImage) image ); 73: ((QtImage)image).putPainter( this ); 74: } 75: else 76: { 77: w = ((QtVolatileImage)image).width; 78: h = ((QtVolatileImage)image).height; 79: initVolatileImage((QtVolatileImage) image ); 80: ((QtVolatileImage)image).putPainter( this ); 81: } 82: 83: parentImage = image; 84: initialClip = new Rectangle( 0, 0, w, h ); 85: setClip( initialClip ); 86: setBackground(Color.white); // fixme 87: currentAlpha = 1.0; 88: setColor(Color.black); 89: setup(); 90: } 91: 92: /** 93: * Copying constructor 94: */ 95: QtImageGraphics( QtImageGraphics g ) 96: { 97: super( g ); 98: parentImage = g.parentImage; 99: if(parentImage instanceof QtImage) 100: ((QtImage)parentImage).putPainter( this ); 101: else 102: ((QtVolatileImage)parentImage).putPainter( this ); 103: } 104: 105: public void dispose() 106: { 107: delete(); 108: if( parentImage instanceof QtImage ) 109: ((QtImage)parentImage).removePainter( this ); 110: else 111: ((QtVolatileImage)parentImage).removePainter( this ); 112: } 113: 114: /** 115: * Create a copy of this context. 116: */ 117: public Graphics create() 118: { 119: return new QtImageGraphics( this ); 120: } 121: 122: /** 123: * Copy an area. 124: */ 125: public void copyArea(int x, int y, int width, int height, 126: int dx, int dy) 127: { 128: if(parentImage instanceof QtImage) 129: ((QtImage)parentImage).copyArea(x, y, width, height, dx, dy); 130: else 131: ((QtVolatileImage)parentImage).copyArea(x, y, width, height, dx, dy); 132: } 133: 134: /** 135: * Returns the GraphicsConfiguration of the context component. 136: */ 137: public GraphicsConfiguration getDeviceConfiguration() 138: { 139: throw new UnsupportedOperationException("Not implemented yet"); 140: } 141: } 142: