1 /* QtComponentGraphics.java -- 2 Copyright (C) 2005, 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 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.Rectangle; 44 45 /** 46 * QtComponentPainter is a Graphics2D context for painting directly to AWT 47 * components. They require an existing QPainter object (the one passed into 48 * the native paint method), and are created there (ONLY). 49 * 50 * Since this context does direct on-screen drawing it is NOT thread-safe, 51 * and should NOT be used outside the thread in which it was created. 52 * 53 * In other words, 54 * this is intended for use by QtComponentPeer.paintEvent() only. 55 * 56 */ 57 public class QtComponentGraphics extends QtGraphics 58 { 59 private QtComponentPeer peer; 60 61 /** 62 * Creates a new ComponentGraphics from an *existing* QPainter object. 63 * 64 * @param ptr the pointer to the QPainter object. 65 */ QtComponentGraphics(long ptr, QtComponentPeer component, int x, int y, int w, int h)66 public QtComponentGraphics(long ptr, QtComponentPeer component, 67 int x, int y, int w, int h) 68 { 69 nativeObject = ptr; 70 peer = component; 71 72 Rectangle r = new Rectangle(x, y, w, h); 73 initialClip = r; 74 75 setAlpha( 1.0 ); 76 Color c = component.owner.getBackground(); 77 if(c == null) 78 setBackground(Color.white); 79 else 80 setBackground( c ); 81 82 c = component.owner.getForeground(); 83 if(c == null) 84 setColor( Color.black ); 85 else 86 setColor( c ); 87 setup(); 88 setClip( initialClip ); 89 } 90 91 /** 92 * Copying constructor 93 */ QtComponentGraphics( QtComponentGraphics g )94 QtComponentGraphics( QtComponentGraphics g ) 95 { 96 super( g ); // Slalom is fun 97 } 98 create()99 public Graphics create() 100 { 101 return new QtComponentGraphics( this ); 102 } 103 104 /** 105 * This is a tricky one 106 */ copyArea(int x, int y, int width, int height, int dx, int dy)107 public void copyArea(int x, int y, int width, int height, 108 int dx, int dy) 109 { 110 // FIXME 111 } 112 113 /** 114 * Returns the GraphicsConfiguration of the context component. 115 */ getDeviceConfiguration()116 public GraphicsConfiguration getDeviceConfiguration() 117 { 118 return peer.getGraphicsConfiguration(); 119 } 120 } 121