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1: /* VolatileImageGraphics.java 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.peer.gtk; 40: 41: import java.awt.Graphics; 42: import java.awt.GraphicsConfiguration; 43: import java.awt.Image; 44: import java.awt.geom.Rectangle2D; 45: import java.awt.image.ImageObserver; 46: 47: public class VolatileImageGraphics extends ComponentGraphics 48: { 49: private GtkVolatileImage owner; 50: 51: public VolatileImageGraphics(GtkVolatileImage img) 52: { 53: this.owner = img; 54: cairo_t = initFromVolatile( owner.nativePointer, img.width, img.height ); 55: setup( cairo_t ); 56: } 57: 58: private VolatileImageGraphics(VolatileImageGraphics copy) 59: { 60: this.owner = copy.owner; 61: cairo_t = initFromVolatile(owner.nativePointer, owner.width, owner.height); 62: copy( copy, cairo_t ); 63: } 64: 65: public void copyAreaImpl(int x, int y, int width, int height, int dx, int dy) 66: { 67: owner.copyArea(x, y, width, height, dx, dy); 68: } 69: 70: public GraphicsConfiguration getDeviceConfiguration() 71: { 72: return owner.component.getGraphicsConfiguration(); 73: } 74: 75: public Graphics create() 76: { 77: return new VolatileImageGraphics( this ); 78: } 79: 80: 81: public boolean drawImage(Image img, int x, int y, ImageObserver observer) 82: { 83: if( img instanceof GtkVolatileImage ) 84: { 85: owner.drawVolatile( ((GtkVolatileImage)img).nativePointer, 86: x, y, 87: ((GtkVolatileImage)img).width, 88: ((GtkVolatileImage)img).height ); 89: return true; 90: } 91: return super.drawImage( img, x, y, observer ); 92: } 93: 94: public boolean drawImage(Image img, int x, int y, int width, int height, 95: ImageObserver observer) 96: { 97: if( img instanceof GtkVolatileImage ) 98: { 99: owner.drawVolatile( ((GtkVolatileImage)img).nativePointer, 100: x, y, width, height ); 101: return true; 102: } 103: return super.drawImage( img, x, y, width, height, observer ); 104: } 105: 106: protected Rectangle2D getRealBounds() 107: { 108: return new Rectangle2D.Double(0, 0, owner.width, owner.height); 109: } 110: }