author | malenkov |
Fri, 27 Sep 2013 22:25:58 +0400 | |
changeset 20433 | f6d501f12376 |
parent 9234 | c8248a33deec |
child 20434 | 19c5cdb0d7a2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.awt; |
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import java.awt.GraphicsConfiguration; |
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import java.awt.GraphicsDevice; |
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import java.awt.GraphicsEnvironment; |
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import java.awt.Toolkit; |
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import java.awt.peer.ComponentPeer; |
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import java.io.File; |
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import java.io.IOException; |
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import java.lang.ref.WeakReference; |
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import java.util.ArrayList; |
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import java.util.ListIterator; |
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import java.util.NoSuchElementException; |
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import java.util.StringTokenizer; |
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import sun.awt.DisplayChangedListener; |
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import sun.awt.SunDisplayChanger; |
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import sun.awt.windows.WPrinterJob; |
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import sun.awt.windows.WToolkit; |
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import sun.java2d.SunGraphicsEnvironment; |
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import sun.java2d.SurfaceManagerFactory; |
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import sun.java2d.WindowsSurfaceManagerFactory; |
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import sun.java2d.d3d.D3DGraphicsDevice; |
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import sun.java2d.windows.WindowsFlags; |
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/** |
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* This is an implementation of a GraphicsEnvironment object for the |
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* default local GraphicsEnvironment used by the Java Runtime Environment |
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* for Windows. |
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* |
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* @see GraphicsDevice |
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* @see GraphicsConfiguration |
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*/ |
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public class Win32GraphicsEnvironment |
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extends SunGraphicsEnvironment |
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{ |
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static { |
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// Ensure awt is loaded already. Also, this forces static init |
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// of WToolkit and Toolkit, which we depend upon |
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WToolkit.loadLibraries(); |
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// setup flags before initializing native layer |
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WindowsFlags.initFlags(); |
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initDisplayWrapper(); |
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// Install correct surface manager factory. |
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SurfaceManagerFactory.setInstance(new WindowsSurfaceManagerFactory()); |
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} |
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/** |
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* Initializes native components of the graphics environment. This |
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* includes everything from the native GraphicsDevice elements to |
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* the DirectX rendering layer. |
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*/ |
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private static native void initDisplay(); |
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private static boolean displayInitialized; // = false; |
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public static void initDisplayWrapper() { |
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if (!displayInitialized) { |
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displayInitialized = true; |
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initDisplay(); |
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} |
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} |
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public Win32GraphicsEnvironment() { |
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} |
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protected native int getNumScreens(); |
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protected native int getDefaultScreen(); |
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public GraphicsDevice getDefaultScreenDevice() { |
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GraphicsDevice[] screens = getScreenDevices(); |
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if (screens.length == 0) { |
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throw new AWTError("no screen devices"); |
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} |
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int index = getDefaultScreen(); |
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return screens[0 < index && index < screens.length ? index : 0]; |
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} |
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/** |
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* Returns the number of pixels per logical inch along the screen width. |
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* In a system with multiple display monitors, this value is the same for |
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* all monitors. |
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* @returns number of pixels per logical inch in X direction |
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*/ |
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public native int getXResolution(); |
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/** |
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* Returns the number of pixels per logical inch along the screen height. |
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* In a system with multiple display monitors, this value is the same for |
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* all monitors. |
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* @returns number of pixels per logical inch in Y direction |
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*/ |
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public native int getYResolution(); |
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/* |
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* ----DISPLAY CHANGE SUPPORT---- |
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*/ |
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// list of invalidated graphics devices (those which were removed) |
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private ArrayList<WeakReference<Win32GraphicsDevice>> oldDevices; |
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/* |
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* From DisplayChangeListener interface. |
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* Called from WToolkit and executed on the event thread when the |
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* display settings are changed. |
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*/ |
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@Override |
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public void displayChanged() { |
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// getNumScreens() will return the correct current number of screens |
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GraphicsDevice newDevices[] = new GraphicsDevice[getNumScreens()]; |
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GraphicsDevice oldScreens[] = screens; |
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// go through the list of current devices and determine if they |
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// could be reused, or will have to be replaced |
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if (oldScreens != null) { |
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for (int i = 0; i < oldScreens.length; i++) { |
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if (!(screens[i] instanceof Win32GraphicsDevice)) { |
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// REMIND: can we ever have anything other than Win32GD? |
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assert (false) : oldScreens[i]; |
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continue; |
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} |
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Win32GraphicsDevice gd = (Win32GraphicsDevice)oldScreens[i]; |
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// devices may be invalidated from the native code when the |
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// display change happens (device add/removal also causes a |
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// display change) |
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if (!gd.isValid()) { |
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if (oldDevices == null) { |
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oldDevices = |
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new ArrayList<WeakReference<Win32GraphicsDevice>>(); |
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} |
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oldDevices.add(new WeakReference<Win32GraphicsDevice>(gd)); |
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} else if (i < newDevices.length) { |
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// reuse the device |
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newDevices[i] = gd; |
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} |
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} |
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oldScreens = null; |
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} |
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// create the new devices (those that weren't reused) |
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for (int i = 0; i < newDevices.length; i++) { |
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if (newDevices[i] == null) { |
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newDevices[i] = makeScreenDevice(i); |
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} |
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} |
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// install the new array of devices |
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// Note: no synchronization here, it doesn't matter if a thread gets |
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// a new or an old array this time around |
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screens = newDevices; |
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for (GraphicsDevice gd : screens) { |
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if (gd instanceof DisplayChangedListener) { |
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((DisplayChangedListener)gd).displayChanged(); |
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} |
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} |
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// re-invalidate all old devices. It's needed because those in the list |
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// may become "invalid" again - if the current default device is removed, |
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// for example. Also, they need to be notified about display |
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// changes as well. |
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if (oldDevices != null) { |
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int defScreen = getDefaultScreen(); |
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for (ListIterator<WeakReference<Win32GraphicsDevice>> it = |
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oldDevices.listIterator(); it.hasNext();) |
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{ |
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Win32GraphicsDevice gd = it.next().get(); |
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if (gd != null) { |
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gd.invalidate(defScreen); |
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gd.displayChanged(); |
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} else { |
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// no more references to this device, remove it |
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it.remove(); |
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} |
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} |
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} |
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// Reset the static GC for the (possibly new) default screen |
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WToolkit.resetGC(); |
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// notify SunDisplayChanger list (e.g. VolatileSurfaceManagers and |
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// CachingSurfaceManagers) about the display change event |
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displayChanger.notifyListeners(); |
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// note: do not call super.displayChanged, we've already done everything |
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} |
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/* |
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* ----END DISPLAY CHANGE SUPPORT---- |
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*/ |
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protected GraphicsDevice makeScreenDevice(int screennum) { |
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GraphicsDevice device = null; |
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if (WindowsFlags.isD3DEnabled()) { |
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device = D3DGraphicsDevice.createDevice(screennum); |
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} |
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if (device == null) { |
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device = new Win32GraphicsDevice(screennum); |
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} |
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return device; |
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} |
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public boolean isDisplayLocal() { |
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return true; |
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} |
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@Override |
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public boolean isFlipStrategyPreferred(ComponentPeer peer) { |
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GraphicsConfiguration gc; |
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if (peer != null && (gc = peer.getGraphicsConfiguration()) != null) { |
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GraphicsDevice gd = gc.getDevice(); |
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if (gd instanceof D3DGraphicsDevice) { |
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return ((D3DGraphicsDevice)gd).isD3DEnabledOnDevice(); |
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} |
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} |
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return false; |
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} |
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private static volatile boolean isDWMCompositionEnabled; |
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/** |
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* Returns true if dwm composition is currently enabled, false otherwise. |
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* |
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* @return true if dwm composition is enabled, false otherwise |
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*/ |
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public static boolean isDWMCompositionEnabled() { |
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return isDWMCompositionEnabled; |
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} |
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/** |
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* Called from the native code when DWM composition state changed. |
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* May be called multiple times during the lifetime of the application. |
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* REMIND: we may want to create a listener mechanism for this. |
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* |
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* Note: called on the Toolkit thread, no user code or locks are allowed. |
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* |
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* @param enabled indicates the state of dwm composition |
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*/ |
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private static void dwmCompositionChanged(boolean enabled) { |
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isDWMCompositionEnabled = enabled; |
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} |
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/** |
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* Used to find out if the OS is Windows Vista or later. |
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* |
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* @return {@code true} if the OS is Vista or later, {@code false} otherwise |
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*/ |
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public static native boolean isVistaOS(); |
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} |