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1: /* QtComponentGraphics.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.Rectangle; 45: import java.awt.Paint; 46: 47: /** 48: * QtComponentPainter is a Graphics2D context for painting directly to AWT 49: * components. They require an existing QPainter object (the one passed into 50: * the native paint method), and are created there (ONLY). 51: * 52: * Since this context does direct on-screen drawing it is NOT thread-safe, 53: * and should NOT be used outside the thread in which it was created. 54: * 55: * In other words, 56: * this is intended for use by QtComponentPeer.paintEvent() only. 57: * 58: */ 59: public class QtComponentGraphics extends QtGraphics 60: { 61: private QtComponentPeer peer; 62: 63: /** 64: * Creates a new ComponentGraphics from an *existing* QPainter object. 65: * 66: * @param ptr the pointer to the QPainter object. 67: */ 68: public QtComponentGraphics(long ptr, QtComponentPeer component, 69: int x, int y, int w, int h) 70: { 71: nativeObject = ptr; 72: peer = component; 73: 74: Rectangle r = new Rectangle(x, y, w, h); 75: initialClip = r; 76: 77: setAlpha( 1.0 ); 78: Color c = component.owner.getBackground(); 79: if(c == null) 80: setBackground(Color.white); 81: else 82: setBackground( c ); 83: 84: c = component.owner.getForeground(); 85: if(c == null) 86: setColor( Color.black ); 87: else 88: setColor( c ); 89: setup(); 90: setClip( initialClip ); 91: } 92: 93: /** 94: * Copying constructor 95: */ 96: QtComponentGraphics( QtComponentGraphics g ) 97: { 98: super( g ); // Slalom is fun 99: } 100: 101: public Graphics create() 102: { 103: return new QtComponentGraphics( this ); 104: } 105: 106: /** 107: * This is a tricky one 108: */ 109: public void copyArea(int x, int y, int width, int height, 110: int dx, int dy) 111: { 112: // FIXME 113: } 114: 115: /** 116: * Returns the GraphicsConfiguration of the context component. 117: */ 118: public GraphicsConfiguration getDeviceConfiguration() 119: { 120: return peer.getGraphicsConfiguration(); 121: } 122: } 123: