1 /*
   2  * Copyright (c) 2012, 2013, 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.Insets;
  33 import java.awt.Window;
  34 import java.util.Objects;
  35 
  36 import sun.java2d.opengl.CGLGraphicsConfig;
  37 
  38 public final class CGraphicsDevice extends GraphicsDevice {
  39 
  40     // CoreGraphics display ID
  41     private final int displayID;
  42 
  43     // Array of all GraphicsConfig instances for this device
  44     private final GraphicsConfiguration[] configs;
  45 
  46     // Default config (temporarily hard coded)
  47     private final int DEFAULT_CONFIG = 0;
  48 
  49     private static AWTPermission fullScreenExclusivePermission;
  50 
  51     // Save/restore DisplayMode for the Full Screen mode
  52     private DisplayMode originalMode;
  53 
  54     public CGraphicsDevice(int displayID) {
  55         this.displayID = displayID;
  56         configs = new GraphicsConfiguration[] {
  57             CGLGraphicsConfig.getConfig(this, 0)
  58         };
  59     }
  60 
  61     /**
  62      * Returns CGDirectDisplayID, which is the same id as @"NSScreenNumber" in
  63      * NSScreen.
  64      *
  65      * @return CoreGraphics display id.
  66      */
  67     public int getCGDisplayID() {
  68         return displayID;
  69     }
  70 
  71     /**
  72      * Return a list of all configurations.
  73      */
  74     @Override
  75     public GraphicsConfiguration[] getConfigurations() {
  76         return configs.clone();
  77     }
  78 
  79     /**
  80      * Return the default configuration.
  81      */
  82     @Override
  83     public GraphicsConfiguration getDefaultConfiguration() {
  84         return configs[DEFAULT_CONFIG];
  85     }
  86 
  87     /**
  88      * Return a human-readable screen description.
  89      */
  90     @Override
  91     public String getIDstring() {
  92         return "Display " + this.displayID;
  93     }
  94 
  95     /**
  96      * Returns the type of the graphics device.
  97      * @see #TYPE_RASTER_SCREEN
  98      * @see #TYPE_PRINTER
  99      * @see #TYPE_IMAGE_BUFFER
 100      */
 101     @Override
 102     public int getType() {
 103         return TYPE_RASTER_SCREEN;
 104     }
 105 
 106     public double getXResolution() {
 107         return nativeGetXResolution(displayID);
 108     }
 109 
 110     public double getYResolution() {
 111         return nativeGetYResolution(displayID);
 112     }
 113 
 114     public Insets getScreenInsets() {
 115         return nativeGetScreenInsets(displayID);
 116     }
 117 
 118     /**
 119      * Enters full-screen mode, or returns to windowed mode.
 120      */
 121     @Override
 122     public synchronized void setFullScreenWindow(Window w) {
 123         Window old = getFullScreenWindow();
 124         if (w == old) {
 125             return;
 126         }
 127 
 128         boolean fsSupported = isFullScreenSupported();
 129 
 130         if (fsSupported && old != null) {
 131             // restore original display mode and enter windowed mode.
 132             if (originalMode != null) {
 133                 setDisplayMode(originalMode);
 134                 originalMode = null;
 135             }
 136             exitFullScreenExclusive(old);
 137         }
 138 
 139         super.setFullScreenWindow(w);
 140 
 141         if (fsSupported && w != null) {
 142             if (isDisplayChangeSupported()) {
 143                 originalMode = getDisplayMode();
 144             }
 145             // enter fullscreen mode
 146             enterFullScreenExclusive(w);
 147         }
 148     }
 149 
 150     /**
 151      * Returns true if this GraphicsDevice supports
 152      * full-screen exclusive mode and false otherwise.
 153      */
 154     @Override
 155     public boolean isFullScreenSupported() {
 156         return isFSExclusiveModeAllowed();
 157     }
 158 
 159     private static boolean isFSExclusiveModeAllowed() {
 160         SecurityManager security = System.getSecurityManager();
 161         if (security != null) {
 162             if (fullScreenExclusivePermission == null) {
 163                 fullScreenExclusivePermission =
 164                     new AWTPermission("fullScreenExclusive");
 165             }
 166             try {
 167                 security.checkPermission(fullScreenExclusivePermission);
 168             } catch (SecurityException e) {
 169                 return false;
 170             }
 171         }
 172         return true;
 173     }
 174 
 175     private static void enterFullScreenExclusive(Window w) {
 176         FullScreenCapable peer = (FullScreenCapable)w.getPeer();
 177         if (peer != null) {
 178             peer.enterFullScreenMode();
 179         }
 180     }
 181 
 182     private static void exitFullScreenExclusive(Window w) {
 183         FullScreenCapable peer = (FullScreenCapable)w.getPeer();
 184         if (peer != null) {
 185             peer.exitFullScreenMode();
 186         }
 187     }
 188 
 189     @Override
 190     public boolean isDisplayChangeSupported() {
 191         return true;
 192     }
 193 
 194     @Override
 195     public void setDisplayMode(final DisplayMode dm) {
 196         if (dm == null) {
 197             throw new IllegalArgumentException("Invalid display mode");
 198         }
 199         if (!Objects.equals(dm, getDisplayMode())) {
 200             final Window w = getFullScreenWindow();
 201             if (w != null) {
 202                 exitFullScreenExclusive(w);
 203             }
 204             nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
 205                                  dm.getBitDepth(), dm.getRefreshRate());
 206             if (isFullScreenSupported() && w != null) {
 207                 enterFullScreenExclusive(w);
 208             }
 209         }
 210     }
 211 
 212     @Override
 213     public DisplayMode getDisplayMode() {
 214         return nativeGetDisplayMode(displayID);
 215     }
 216 
 217     @Override
 218     public DisplayMode[] getDisplayModes() {
 219         return nativeGetDisplayModes(displayID);
 220     }
 221 
 222     private static native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);
 223 
 224     private static native DisplayMode nativeGetDisplayMode(int displayID);
 225 
 226     private static native DisplayMode[] nativeGetDisplayModes(int displayID);
 227 
 228     private static native double nativeGetXResolution(int displayID);
 229 
 230     private static native double nativeGetYResolution(int displayID);
 231 
 232     private static native Insets nativeGetScreenInsets(int displayID);
 233 }