1 /*
   2  * Copyright (c) 2012, 2015, 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         implements DisplayChangedListener {
  40 
  41     /**
  42      * CoreGraphics display ID. This identifier can become non-valid at any time
  43      * therefore methods, which is using this id should be ready to it.
  44      */
  45     private volatile int displayID;
  46     private volatile double xResolution;
  47     private volatile double yResolution;
  48     private volatile int scale;
  49 
  50     // Array of all GraphicsConfig instances for this device
  51     private final GraphicsConfiguration[] configs;
  52 
  53     // Default config (temporarily hard coded)
  54     private final int DEFAULT_CONFIG = 0;
  55 
  56     private static AWTPermission fullScreenExclusivePermission;
  57 
  58     // Save/restore DisplayMode for the Full Screen mode
  59     private DisplayMode originalMode;
  60 
  61     public CGraphicsDevice(final int displayID) {
  62         this.displayID = displayID;
  63         configs = new GraphicsConfiguration[] {
  64             CGLGraphicsConfig.getConfig(this, 0)
  65         };
  66     }
  67 
  68     /**
  69      * Returns CGDirectDisplayID, which is the same id as @"NSScreenNumber" in
  70      * NSScreen.
  71      *
  72      * @return CoreGraphics display id.
  73      */
  74     public int getCGDisplayID() {
  75         return displayID;
  76     }
  77 
  78     /**
  79      * Return a list of all configurations.
  80      */
  81     @Override
  82     public GraphicsConfiguration[] getConfigurations() {
  83         return configs.clone();
  84     }
  85 
  86     /**
  87      * Return the default configuration.
  88      */
  89     @Override
  90     public GraphicsConfiguration getDefaultConfiguration() {
  91         return configs[DEFAULT_CONFIG];
  92     }
  93 
  94     /**
  95      * Return a human-readable screen description.
  96      */
  97     @Override
  98     public String getIDstring() {
  99         return "Display " + displayID;
 100     }
 101 
 102     /**
 103      * Returns the type of the graphics device.
 104      * @see #TYPE_RASTER_SCREEN
 105      * @see #TYPE_PRINTER
 106      * @see #TYPE_IMAGE_BUFFER
 107      */
 108     @Override
 109     public int getType() {
 110         return TYPE_RASTER_SCREEN;
 111     }
 112 
 113     public double getXResolution() {
 114         return xResolution;
 115     }
 116 
 117     public double getYResolution() {
 118         return yResolution;
 119     }
 120 
 121     public Insets getScreenInsets() {
 122         // the insets are queried synchronously and are not cached
 123         // since there are no Quartz or Cocoa means to receive notifications
 124         // on insets changes (e.g. when the Dock is resized):
 125         // the existing CGDisplayReconfigurationCallBack is not notified
 126         // as well as the NSApplicationDidChangeScreenParametersNotification
 127         // is fired on the Dock location changes only
 128         return nativeGetScreenInsets(displayID);
 129     }
 130 
 131     public int getScaleFactor() {
 132         return scale;
 133     }
 134 
 135     public void invalidate(final int defaultDisplayID) {
 136         displayID = defaultDisplayID;
 137     }
 138 
 139     @Override
 140     public void displayChanged() {
 141         xResolution = nativeGetXResolution(displayID);
 142         yResolution = nativeGetYResolution(displayID);
 143         scale = (int) nativeGetScaleFactor(displayID);
 144         //TODO configs/fullscreenWindow/modes?
 145     }
 146 
 147     @Override
 148     public void paletteChanged() {
 149         // devices do not need to react to this event.
 150     }
 151 
 152     /**
 153      * Enters full-screen mode, or returns to windowed mode.
 154      */
 155     @Override
 156     public synchronized void setFullScreenWindow(Window w) {
 157         Window old = getFullScreenWindow();
 158         if (w == old) {
 159             return;
 160         }
 161 
 162         boolean fsSupported = isFullScreenSupported();
 163 
 164         if (fsSupported && old != null) {
 165             // enter windowed mode and restore original display mode
 166             exitFullScreenExclusive(old);
 167             if (originalMode != null) {
 168                 setDisplayMode(originalMode);
 169                 originalMode = null;
 170             }
 171         }
 172 
 173         super.setFullScreenWindow(w);
 174 
 175         if (fsSupported && w != null) {
 176             if (isDisplayChangeSupported()) {
 177                 originalMode = getDisplayMode();
 178             }
 179             // enter fullscreen mode
 180             enterFullScreenExclusive(w);
 181         }
 182     }
 183 
 184     /**
 185      * Returns true if this GraphicsDevice supports
 186      * full-screen exclusive mode and false otherwise.
 187      */
 188     @Override
 189     public boolean isFullScreenSupported() {
 190         return isFSExclusiveModeAllowed();
 191     }
 192 
 193     private static boolean isFSExclusiveModeAllowed() {
 194         SecurityManager security = System.getSecurityManager();
 195         if (security != null) {
 196             if (fullScreenExclusivePermission == null) {
 197                 fullScreenExclusivePermission =
 198                     new AWTPermission("fullScreenExclusive");
 199             }
 200             try {
 201                 security.checkPermission(fullScreenExclusivePermission);
 202             } catch (SecurityException e) {
 203                 return false;
 204             }
 205         }
 206         return true;
 207     }
 208 
 209     private static void enterFullScreenExclusive(Window w) {
 210         FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
 211         if (peer != null) {
 212             peer.enterFullScreenMode();
 213         }
 214     }
 215 
 216     private static void exitFullScreenExclusive(Window w) {
 217         FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
 218         if (peer != null) {
 219             peer.exitFullScreenMode();
 220         }
 221     }
 222 
 223     @Override
 224     public boolean isDisplayChangeSupported() {
 225         return true;
 226     }
 227 
 228     @Override
 229     public void setDisplayMode(final DisplayMode dm) {
 230         if (dm == null) {
 231             throw new IllegalArgumentException("Invalid display mode");
 232         }
 233         if (!Objects.equals(dm, getDisplayMode())) {
 234             nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
 235                     dm.getBitDepth(), dm.getRefreshRate());
 236             if (isFullScreenSupported() && getFullScreenWindow() != null) {
 237                 getFullScreenWindow().setSize(dm.getWidth(), dm.getHeight());
 238             }
 239         }
 240     }
 241 
 242     @Override
 243     public DisplayMode getDisplayMode() {
 244         return nativeGetDisplayMode(displayID);
 245     }
 246 
 247     @Override
 248     public DisplayMode[] getDisplayModes() {
 249         return nativeGetDisplayModes(displayID);
 250     }
 251 











 252     private static native double nativeGetScaleFactor(int displayID);
 253 
 254     private static native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);
 255 
 256     private static native DisplayMode nativeGetDisplayMode(int displayID);
 257 
 258     private static native DisplayMode[] nativeGetDisplayModes(int displayID);
 259 
 260     private static native double nativeGetXResolution(int displayID);
 261 
 262     private static native double nativeGetYResolution(int displayID);
 263 
 264     private static native Insets nativeGetScreenInsets(int displayID);
 265 }
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