J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.java2d.x11; |
| 27 | |
| 28 | import java.awt.GraphicsConfiguration; |
| 29 | import java.awt.ImageCapabilities; |
| 30 | import java.awt.Transparency; |
| 31 | import java.awt.image.ColorModel; |
| 32 | import sun.awt.X11GraphicsConfig; |
| 33 | import sun.awt.image.SunVolatileImage; |
| 34 | import sun.awt.image.VolatileSurfaceManager; |
| 35 | import sun.java2d.SurfaceData; |
| 36 | |
| 37 | /** |
| 38 | * X11 platform implementation of the VolatileSurfaceManager class. |
| 39 | * The class attempts to create and use a pixmap-based SurfaceData |
| 40 | * object (X11PixmapSurfaceData). |
| 41 | * If this object cannot be created or re-created as necessary, the |
| 42 | * class falls back to a system memory based SurfaceData object |
| 43 | * (BufImgSurfaceData) that will be used until the accelerated |
| 44 | * SurfaceData can be restored. |
| 45 | */ |
| 46 | public class X11VolatileSurfaceManager extends VolatileSurfaceManager { |
| 47 | |
| 48 | private boolean accelerationEnabled; |
| 49 | |
| 50 | public X11VolatileSurfaceManager(SunVolatileImage vImg, Object context) { |
| 51 | super(vImg, context); |
| 52 | |
| 53 | // We only accelerated opaque vImages currently |
| 54 | accelerationEnabled = X11SurfaceData.isAccelerationEnabled() && |
| 55 | (vImg.getTransparency() == Transparency.OPAQUE); |
| 56 | |
| 57 | if ((context != null) && !accelerationEnabled) { |
| 58 | // if we're wrapping a backbuffer drawable, we must ensure that |
| 59 | // the accelerated surface is initialized up front, regardless |
| 60 | // of whether acceleration is enabled. But we need to set |
| 61 | // the accelerationEnabled field to true to reflect that this |
| 62 | // SM is actually accelerated. |
| 63 | accelerationEnabled = true; |
| 64 | sdAccel = initAcceleratedSurface(); |
| 65 | sdCurrent = sdAccel; |
| 66 | |
| 67 | if (sdBackup != null) { |
| 68 | // release the system memory backup surface, as we won't be |
| 69 | // needing it in this case |
| 70 | sdBackup = null; |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | protected boolean isAccelerationEnabled() { |
| 76 | return accelerationEnabled; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Create a pixmap-based SurfaceData object |
| 81 | */ |
| 82 | protected SurfaceData initAcceleratedSurface() { |
| 83 | SurfaceData sData; |
| 84 | |
| 85 | try { |
| 86 | X11GraphicsConfig gc = (X11GraphicsConfig)vImg.getGraphicsConfig(); |
| 87 | ColorModel cm = gc.getColorModel(); |
| 88 | long drawable = 0; |
| 89 | if (context instanceof Long) { |
| 90 | drawable = ((Long)context).longValue(); |
| 91 | } |
| 92 | sData = X11SurfaceData.createData(gc, |
| 93 | vImg.getWidth(), |
| 94 | vImg.getHeight(), |
| 95 | cm, vImg, drawable, |
| 96 | Transparency.OPAQUE); |
| 97 | } catch (NullPointerException ex) { |
| 98 | sData = null; |
| 99 | } catch (OutOfMemoryError er) { |
| 100 | sData = null; |
| 101 | } |
| 102 | |
| 103 | return sData; |
| 104 | } |
| 105 | |
| 106 | protected boolean isConfigValid(GraphicsConfiguration gc) { |
| 107 | // REMIND: we might be too paranoid here, requiring that |
| 108 | // the GC be exactly the same as the original one. The |
| 109 | // real answer is one that guarantees that pixmap copies |
| 110 | // will be correct (which requires like bit depths and |
| 111 | // formats). |
| 112 | return ((gc == null) || (gc == vImg.getGraphicsConfig())); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Need to override the default behavior because Pixmaps-based |
| 117 | * images are accelerated but not volatile. |
| 118 | */ |
| 119 | @Override |
| 120 | public ImageCapabilities getCapabilities(GraphicsConfiguration gc) { |
| 121 | if (isConfigValid(gc) && isAccelerationEnabled()) { |
| 122 | // accelerated but not volatile |
| 123 | return new ImageCapabilities(true); |
| 124 | } |
| 125 | // neither accelerated nor volatile |
| 126 | return new ImageCapabilities(false); |
| 127 | } |
| 128 | } |