1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.awt;
  27 
  28 import java.awt.AWTPermission;
  29 import java.awt.DisplayMode;
  30 import java.awt.GraphicsConfiguration;
  31 import java.awt.GraphicsDevice;
  32 import java.awt.Window;


  33 import java.util.Objects;
  34 
  35 import sun.java2d.opengl.CGLGraphicsConfig;
  36 
  37 public final class CGraphicsDevice extends GraphicsDevice {
  38 
  39     // CoreGraphics display ID
  40     private final int displayID;
  41 
  42     // Array of all GraphicsConfig instances for this device
  43     private final GraphicsConfiguration[] configs;
  44 
  45     // Default config (temporarily hard coded)
  46     private final int DEFAULT_CONFIG = 0;
  47 
  48     private static AWTPermission fullScreenExclusivePermission;
  49 
  50     // Save/restore DisplayMode for the Full Screen mode
  51     private DisplayMode originalMode;
  52 
  53     public CGraphicsDevice(int displayID) {
  54         this.displayID = displayID;
  55         configs = new GraphicsConfiguration[] {
  56             CGLGraphicsConfig.getConfig(this, 0)
  57         };
  58     }
  59 
  60     /**
  61      * Returns CGDirectDisplayID, which is the same id as @"NSScreenNumber" in
  62      * NSScreen.
  63      *
  64      * @return CoreGraphics display id.
  65      */
  66     public int getCGDisplayID() {
  67         return displayID;
  68     }
  69 
  70     /**
  71      * Return a list of all configurations.
  72      */
  73     @Override
  74     public GraphicsConfiguration[] getConfigurations() {
  75         return configs.clone();
  76     }
  77 
  78     /**
  79      * Return the default configuration.
  80      */
  81     @Override
  82     public GraphicsConfiguration getDefaultConfiguration() {
  83         return configs[DEFAULT_CONFIG];
  84     }
  85 
  86     /**
  87      * Return a human-readable screen description.
  88      */
  89     @Override
  90     public String getIDstring() {
  91         return "Display " + this.displayID;
  92     }
  93 
  94     /**
  95      * Returns the type of the graphics device.
  96      * @see #TYPE_RASTER_SCREEN
  97      * @see #TYPE_PRINTER
  98      * @see #TYPE_IMAGE_BUFFER
  99      */
 100     @Override
 101     public int getType() {
 102         return TYPE_RASTER_SCREEN;
 103     }
 104 
 105     public double getXResolution() {
 106         return nativeGetXResolution(displayID);
 107     }
 108 
 109     public double getYResolution() {
 110         return nativeGetYResolution(displayID);
 111     }
 112 
 113     private static native double nativeGetXResolution(int displayID);
 114     private static native double nativeGetYResolution(int displayID);
 115 
 116     /**
 117      * Enters full-screen mode, or returns to windowed mode.
 118      */
 119     @Override
 120     public synchronized void setFullScreenWindow(Window w) {
 121         Window old = getFullScreenWindow();
 122         if (w == old) {
 123             return;
 124         }
 125 
 126         boolean fsSupported = isFullScreenSupported();
 127 
 128         if (fsSupported && old != null) {
 129             // restore original display mode and enter windowed mode.
 130             if (originalMode != null) {
 131                 setDisplayMode(originalMode);
 132                 originalMode = null;
 133             }
 134             exitFullScreenExclusive(old);
 135         }
 136 
 137         super.setFullScreenWindow(w);
 138 
 139         if (fsSupported && w != null) {
 140             if (isDisplayChangeSupported()) {
 141                 originalMode = getDisplayMode();
 142             }
 143             // enter fullscreen mode
 144             enterFullScreenExclusive(w);
 145         }
 146     }
 147 
 148     /**
 149      * Returns true if this GraphicsDevice supports
 150      * full-screen exclusive mode and false otherwise.
 151      */
 152     @Override
 153     public boolean isFullScreenSupported() {
 154         return isFSExclusiveModeAllowed();
 155     }
 156 
 157     private static boolean isFSExclusiveModeAllowed() {
 158         SecurityManager security = System.getSecurityManager();
 159         if (security != null) {
 160             if (fullScreenExclusivePermission == null) {
 161                 fullScreenExclusivePermission =
 162                     new AWTPermission("fullScreenExclusive");
 163             }
 164             try {
 165                 security.checkPermission(fullScreenExclusivePermission);
 166             } catch (SecurityException e) {
 167                 return false;
 168             }
 169         }
 170         return true;
 171     }
 172 
 173     private static void enterFullScreenExclusive(Window w) {
 174         FullScreenCapable peer = (FullScreenCapable)w.getPeer();
 175         if (peer != null) {
 176             peer.enterFullScreenMode();
 177         }
 178     }
 179 
 180     private static void exitFullScreenExclusive(Window w) {
 181         FullScreenCapable peer = (FullScreenCapable)w.getPeer();
 182         if (peer != null) {
 183             peer.exitFullScreenMode();
 184         }
 185     }
 186 
 187     @Override
 188     public boolean isDisplayChangeSupported() {
 189         return true;
 190     }
 191 
 192     @Override
 193     public void setDisplayMode(final DisplayMode dm) {
 194         if (dm == null) {
 195             throw new IllegalArgumentException("Invalid display mode");
 196         }
 197         if (!Objects.equals(dm, getDisplayMode())) {
 198             final Window w = getFullScreenWindow();
 199             if (w != null) {
 200                 exitFullScreenExclusive(w);
 201             }
 202             nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
 203                                  dm.getBitDepth(), dm.getRefreshRate());
 204             if (isFullScreenSupported() && w != null) {
 205                 enterFullScreenExclusive(w);
 206             }
 207         }
 208     }
 209 
 210     @Override
 211     public DisplayMode getDisplayMode() {
 212         return nativeGetDisplayMode(displayID);
 213     }
 214 
 215     @Override
 216     public DisplayMode[] getDisplayModes() {
 217         return nativeGetDisplayModes(displayID);
 218     }
 219 
 220     private native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);
 221 
 222     private native DisplayMode nativeGetDisplayMode(int displayID);
 223 
 224     private native DisplayMode[] nativeGetDisplayModes(int displayID);
 225 }
--- EOF ---