src/java.desktop/macosx/classes/sun/awt/CGraphicsDevice.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package sun.awt;

 import java.awt.AWTPermission;
 import java.awt.DisplayMode;
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsDevice;
 import java.awt.Insets;
 import java.awt.Rectangle;
 import java.awt.Window;
 import java.awt.geom.Rectangle2D;
 import java.awt.peer.WindowPeer;
 import java.util.Objects;

 import sun.java2d.SunGraphicsEnvironment;
 import sun.java2d.opengl.CGLGraphicsConfig;

 import static java.awt.peer.ComponentPeer.SET_BOUNDS;

 public final class CGraphicsDevice extends GraphicsDevice
         implements DisplayChangedListener {

     /**
      * CoreGraphics display ID. This identifier can become non-valid at any time
      * therefore methods, which is using this id should be ready to it.
      */
     private volatile int displayID;
     private volatile double xResolution;
     private volatile double yResolution;
     private volatile Rectangle bounds;
     private volatile int scale;

     // Array of all GraphicsConfig instances for this device
     private final GraphicsConfiguration[] configs;

     // Default config (temporarily hard coded)
     private final int DEFAULT_CONFIG = 0;

     private static AWTPermission fullScreenExclusivePermission;

     // Save/restore DisplayMode for the Full Screen mode
     private DisplayMode originalMode;

     public CGraphicsDevice(final int displayID) {
         this.displayID = displayID;
         configs = new GraphicsConfiguration[] {
             CGLGraphicsConfig.getConfig(this, displayID, 0)
         };
         // initializes default device state, might be redundant step since we
         // call "displayChanged()" later anyway, but we do not want to leave the
         // device in an inconsistent state after construction
         displayChanged();
     }

     /**
      * Return a list of all configurations.
      */
     @Override
     public GraphicsConfiguration[] getConfigurations() {
         return configs.clone();
     }

     /**
      * Return the default configuration.
      */
     @Override
     public GraphicsConfiguration getDefaultConfiguration() {
         return configs[DEFAULT_CONFIG];
     }

     /**
      * Return a human-readable screen description.
      */
     @Override
     public String getIDstring() {
         return "Display " + displayID;
     }

     /**
      * Returns the type of the graphics device.
      * @see #TYPE_RASTER_SCREEN
      * @see #TYPE_PRINTER
      * @see #TYPE_IMAGE_BUFFER
      */
     @Override
     public int getType() {
         return TYPE_RASTER_SCREEN;
     }

     public double getXResolution() {
         return xResolution;
     }

     public double getYResolution() {
         return yResolution;
     }

     Rectangle getBounds() {
         return bounds.getBounds();
     }

     public Insets getScreenInsets() {
         // the insets are queried synchronously and are not cached
         // since there are no Quartz or Cocoa means to receive notifications
         // on insets changes (e.g. when the Dock is resized):
         // the existing CGDisplayReconfigurationCallBack is not notified
         // as well as the NSApplicationDidChangeScreenParametersNotification
         // is fired on the Dock location changes only
         return nativeGetScreenInsets(displayID);
     }

     public int getScaleFactor() {
         return scale;
     }

     public void invalidate(final int defaultDisplayID) {
         //TODO do we need to restore the full-screen window/modes on old device?
         displayID = defaultDisplayID;
     }

     @Override
     public void displayChanged() {
         xResolution = nativeGetXResolution(displayID);
         yResolution = nativeGetYResolution(displayID);
         bounds = nativeGetBounds(displayID).getBounds(); //does integer rounding
         initScaleFactor();
         resizeFSWindow(getFullScreenWindow(), bounds);
         //TODO configs?
     }

     @Override
     public void paletteChanged() {
         // devices do not need to react to this event.
     }

     /**
      * Enters full-screen mode, or returns to windowed mode.
      */
     @Override
     public synchronized void setFullScreenWindow(Window w) {
         Window old = getFullScreenWindow();
         if (w == old) {
             return;
         }

         boolean fsSupported = isFullScreenSupported();

         if (fsSupported && old != null) {
             // enter windowed mode and restore original display mode
             exitFullScreenExclusive(old);
             if (originalMode != null) {
                 setDisplayMode(originalMode);
                 originalMode = null;
             }
         }

         super.setFullScreenWindow(w);

         if (fsSupported && w != null) {
             if (isDisplayChangeSupported()) {
                 originalMode = getDisplayMode();
             }
             // enter fullscreen mode
             enterFullScreenExclusive(w);
         }
     }

     /**
      * Returns true if this GraphicsDevice supports
      * full-screen exclusive mode and false otherwise.
      */
     @Override
     public boolean isFullScreenSupported() {
         return isFSExclusiveModeAllowed();
     }

     private static boolean isFSExclusiveModeAllowed() {
         SecurityManager security = System.getSecurityManager();
         if (security != null) {
             if (fullScreenExclusivePermission == null) {
                 fullScreenExclusivePermission =
                     new AWTPermission("fullScreenExclusive");
             }
             try {
                 security.checkPermission(fullScreenExclusivePermission);
             } catch (SecurityException e) {
                 return false;
             }
         }
         return true;
     }

     private static void enterFullScreenExclusive(Window w) {
         FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
         if (peer != null) {
             peer.enterFullScreenMode();
         }
     }

     private static void exitFullScreenExclusive(Window w) {
         FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
         if (peer != null) {
             peer.exitFullScreenMode();
         }
     }

     /**
      * Reapplies the size of this device to the full-screen window.
      */
     private static void resizeFSWindow(final Window w, final Rectangle b) {
         if (w != null) {
             WindowPeer peer = AWTAccessor.getComponentAccessor().getPeer(w);
             if (peer != null) {
                 peer.setBounds(b.x, b.y, b.width, b.height, SET_BOUNDS);
             }
         }
     }

     @Override
     public boolean isDisplayChangeSupported() {
         return true;
     }

     @Override
     public void setDisplayMode(final DisplayMode dm) {
         if (dm == null) {
             throw new IllegalArgumentException("Invalid display mode");
         }
         if (!Objects.equals(dm, getDisplayMode())) {
             nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
                                  dm.getBitDepth(), dm.getRefreshRate());
         }
     }

     @Override
     public DisplayMode getDisplayMode() {
         return nativeGetDisplayMode(displayID);
     }

     @Override
     public DisplayMode[] getDisplayModes() {
         return nativeGetDisplayModes(displayID);
     }

     private void initScaleFactor() {
         if (SunGraphicsEnvironment.isUIScaleEnabled()) {
             double debugScale = SunGraphicsEnvironment.getDebugScale();
             scale = (int) (debugScale >= 1
                     ? Math.round(debugScale)
                     : nativeGetScaleFactor(displayID));
         } else {
             scale = 1;
         }
     }

     private static native double nativeGetScaleFactor(int displayID);

     private static native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);

     private static native DisplayMode nativeGetDisplayMode(int displayID);

     private static native DisplayMode[] nativeGetDisplayModes(int displayID);

     private static native double nativeGetXResolution(int displayID);

     private static native double nativeGetYResolution(int displayID);

     private static native Insets nativeGetScreenInsets(int displayID);

     private static native Rectangle2D nativeGetBounds(int displayID);
 }
	/*
	* Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.awt;

	import java.awt.AWTPermission;
	import java.awt.DisplayMode;
	import java.awt.GraphicsConfiguration;
	import java.awt.GraphicsDevice;
	import java.awt.Insets;
	import java.awt.Rectangle;
	import java.awt.Window;
	import java.awt.geom.Rectangle2D;
	import java.awt.peer.WindowPeer;
	import java.util.Objects;

	import sun.java2d.SunGraphicsEnvironment;
	import sun.java2d.opengl.CGLGraphicsConfig;

	import static java.awt.peer.ComponentPeer.SET_BOUNDS;

	public final class CGraphicsDevice extends GraphicsDevice
	implements DisplayChangedListener {

	/**
	* CoreGraphics display ID. This identifier can become non-valid at any time
	* therefore methods, which is using this id should be ready to it.
	*/
	private volatile int displayID;
	private volatile double xResolution;
	private volatile double yResolution;
	private volatile Rectangle bounds;
	private volatile int scale;

	// Array of all GraphicsConfig instances for this device
	private final GraphicsConfiguration[] configs;

	// Default config (temporarily hard coded)
	private final int DEFAULT_CONFIG = 0;

	private static AWTPermission fullScreenExclusivePermission;

	// Save/restore DisplayMode for the Full Screen mode
	private DisplayMode originalMode;

	public CGraphicsDevice(final int displayID) {
	this.displayID = displayID;
	configs = new GraphicsConfiguration[] {
	CGLGraphicsConfig.getConfig(this, displayID, 0)
	};
	// initializes default device state, might be redundant step since we
	// call "displayChanged()" later anyway, but we do not want to leave the
	// device in an inconsistent state after construction
	displayChanged();
	}

	/**
	* Return a list of all configurations.
	*/
	@Override
	public GraphicsConfiguration[] getConfigurations() {
	return configs.clone();
	}

	/**
	* Return the default configuration.
	*/
	@Override
	public GraphicsConfiguration getDefaultConfiguration() {
	return configs[DEFAULT_CONFIG];
	}

	/**
	* Return a human-readable screen description.
	*/
	@Override
	public String getIDstring() {
	return "Display " + displayID;
	}

	/**
	* Returns the type of the graphics device.
	* @see #TYPE_RASTER_SCREEN
	* @see #TYPE_PRINTER
	* @see #TYPE_IMAGE_BUFFER
	*/
	@Override
	public int getType() {
	return TYPE_RASTER_SCREEN;
	}

	public double getXResolution() {
	return xResolution;
	}

	public double getYResolution() {
	return yResolution;
	}

	Rectangle getBounds() {
	return bounds.getBounds();
	}

	public Insets getScreenInsets() {
	// the insets are queried synchronously and are not cached
	// since there are no Quartz or Cocoa means to receive notifications
	// on insets changes (e.g. when the Dock is resized):
	// the existing CGDisplayReconfigurationCallBack is not notified
	// as well as the NSApplicationDidChangeScreenParametersNotification
	// is fired on the Dock location changes only
	return nativeGetScreenInsets(displayID);
	}

	public int getScaleFactor() {
	return scale;
	}

	public void invalidate(final int defaultDisplayID) {
	//TODO do we need to restore the full-screen window/modes on old device?
	displayID = defaultDisplayID;
	}

	@Override
	public void displayChanged() {
	xResolution = nativeGetXResolution(displayID);
	yResolution = nativeGetYResolution(displayID);
	bounds = nativeGetBounds(displayID).getBounds(); //does integer rounding
	initScaleFactor();
	resizeFSWindow(getFullScreenWindow(), bounds);
	//TODO configs?
	}

	@Override
	public void paletteChanged() {
	// devices do not need to react to this event.
	}

	/**
	* Enters full-screen mode, or returns to windowed mode.
	*/
	@Override
	public synchronized void setFullScreenWindow(Window w) {
	Window old = getFullScreenWindow();
	if (w == old) {
	return;
	}

	boolean fsSupported = isFullScreenSupported();

	if (fsSupported && old != null) {
	// enter windowed mode and restore original display mode
	exitFullScreenExclusive(old);
	if (originalMode != null) {
	setDisplayMode(originalMode);
	originalMode = null;
	}
	}

	super.setFullScreenWindow(w);

	if (fsSupported && w != null) {
	if (isDisplayChangeSupported()) {
	originalMode = getDisplayMode();
	}
	// enter fullscreen mode
	enterFullScreenExclusive(w);
	}
	}

	/**
	* Returns true if this GraphicsDevice supports
	* full-screen exclusive mode and false otherwise.
	*/
	@Override
	public boolean isFullScreenSupported() {
	return isFSExclusiveModeAllowed();
	}

	private static boolean isFSExclusiveModeAllowed() {
	SecurityManager security = System.getSecurityManager();
	if (security != null) {
	if (fullScreenExclusivePermission == null) {
	fullScreenExclusivePermission =
	new AWTPermission("fullScreenExclusive");
	}
	try {
	security.checkPermission(fullScreenExclusivePermission);
	} catch (SecurityException e) {
	return false;
	}
	}
	return true;
	}

	private static void enterFullScreenExclusive(Window w) {
	FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
	if (peer != null) {
	peer.enterFullScreenMode();
	}
	}

	private static void exitFullScreenExclusive(Window w) {
	FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
	if (peer != null) {
	peer.exitFullScreenMode();
	}
	}

	/**
	* Reapplies the size of this device to the full-screen window.
	*/
	private static void resizeFSWindow(final Window w, final Rectangle b) {
	if (w != null) {
	WindowPeer peer = AWTAccessor.getComponentAccessor().getPeer(w);
	if (peer != null) {
	peer.setBounds(b.x, b.y, b.width, b.height, SET_BOUNDS);
	}
	}
	}

	@Override
	public boolean isDisplayChangeSupported() {
	return true;
	}

	@Override
	public void setDisplayMode(final DisplayMode dm) {
	if (dm == null) {
	throw new IllegalArgumentException("Invalid display mode");
	}
	if (!Objects.equals(dm, getDisplayMode())) {
	nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
	dm.getBitDepth(), dm.getRefreshRate());
	}
	}

	@Override
	public DisplayMode getDisplayMode() {
	return nativeGetDisplayMode(displayID);
	}

	@Override
	public DisplayMode[] getDisplayModes() {
	return nativeGetDisplayModes(displayID);
	}

	private void initScaleFactor() {
	if (SunGraphicsEnvironment.isUIScaleEnabled()) {
	double debugScale = SunGraphicsEnvironment.getDebugScale();
	scale = (int) (debugScale >= 1
	? Math.round(debugScale)
	: nativeGetScaleFactor(displayID));
	} else {
	scale = 1;
	}
	}

	private static native double nativeGetScaleFactor(int displayID);

	private static native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);

	private static native DisplayMode nativeGetDisplayMode(int displayID);

	private static native DisplayMode[] nativeGetDisplayModes(int displayID);

	private static native double nativeGetXResolution(int displayID);

	private static native double nativeGetYResolution(int displayID);

	private static native Insets nativeGetScreenInsets(int displayID);

	private static native Rectangle2D nativeGetBounds(int displayID);
	}