| /* |
| * Copyright (c) 1997, 2015, 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.AWTError; |
| import java.awt.GraphicsConfiguration; |
| import java.awt.GraphicsDevice; |
| import java.awt.peer.ComponentPeer; |
| import java.lang.ref.WeakReference; |
| import java.util.ArrayList; |
| import java.util.ListIterator; |
| |
| import sun.awt.windows.WToolkit; |
| import sun.java2d.SunGraphicsEnvironment; |
| import sun.java2d.SurfaceManagerFactory; |
| import sun.java2d.WindowsSurfaceManagerFactory; |
| import sun.java2d.d3d.D3DGraphicsDevice; |
| import sun.java2d.windows.WindowsFlags; |
| |
| /** |
| * This is an implementation of a GraphicsEnvironment object for the |
| * default local GraphicsEnvironment used by the Java Runtime Environment |
| * for Windows. |
| * |
| * @see GraphicsDevice |
| * @see GraphicsConfiguration |
| */ |
| |
| public final class Win32GraphicsEnvironment extends SunGraphicsEnvironment { |
| |
| static final float debugScaleX; |
| static final float debugScaleY; |
| |
| static { |
| // Ensure awt is loaded already. Also, this forces static init |
| // of WToolkit and Toolkit, which we depend upon |
| WToolkit.loadLibraries(); |
| // setup flags before initializing native layer |
| WindowsFlags.initFlags(); |
| initDisplayWrapper(); |
| |
| // Install correct surface manager factory. |
| SurfaceManagerFactory.setInstance(new WindowsSurfaceManagerFactory()); |
| |
| double sx = -1; |
| double sy = -1; |
| if (isUIScaleEnabled()) { |
| sx = getScaleFactor("sun.java2d.win.uiScaleX"); |
| sy = getScaleFactor("sun.java2d.win.uiScaleY"); |
| if (sx <= 0 || sy <= 0) { |
| double s = getDebugScale(); |
| sx = s; |
| sy = s; |
| } |
| } |
| |
| debugScaleX = (float) sx; |
| debugScaleY = (float) sy; |
| } |
| |
| /** |
| * Initializes native components of the graphics environment. This |
| * includes everything from the native GraphicsDevice elements to |
| * the DirectX rendering layer. |
| */ |
| private static native void initDisplay(); |
| |
| private static boolean displayInitialized; // = false; |
| public static void initDisplayWrapper() { |
| if (!displayInitialized) { |
| displayInitialized = true; |
| initDisplay(); |
| } |
| } |
| |
| public Win32GraphicsEnvironment() { |
| } |
| |
| protected native int getNumScreens(); |
| private native int getDefaultScreen(); |
| |
| public GraphicsDevice getDefaultScreenDevice() { |
| GraphicsDevice[] screens = getScreenDevices(); |
| if (screens.length == 0) { |
| throw new AWTError("no screen devices"); |
| } |
| int index = getDefaultScreen(); |
| return screens[0 < index && index < screens.length ? index : 0]; |
| } |
| |
| /** |
| * Returns the number of pixels per logical inch along the screen width. |
| * In a system with multiple display monitors, this value is the same for |
| * all monitors. |
| * @return number of pixels per logical inch in X direction |
| */ |
| public native int getXResolution(); |
| /** |
| * Returns the number of pixels per logical inch along the screen height. |
| * In a system with multiple display monitors, this value is the same for |
| * all monitors. |
| * @return number of pixels per logical inch in Y direction |
| */ |
| public native int getYResolution(); |
| |
| |
| /* |
| * ----DISPLAY CHANGE SUPPORT---- |
| */ |
| |
| // list of invalidated graphics devices (those which were removed) |
| private ArrayList<WeakReference<Win32GraphicsDevice>> oldDevices; |
| /* |
| * From DisplayChangeListener interface. |
| * Called from WToolkit and executed on the event thread when the |
| * display settings are changed. |
| */ |
| @Override |
| public void displayChanged() { |
| // getNumScreens() will return the correct current number of screens |
| GraphicsDevice newDevices[] = new GraphicsDevice[getNumScreens()]; |
| GraphicsDevice oldScreens[] = screens; |
| // go through the list of current devices and determine if they |
| // could be reused, or will have to be replaced |
| if (oldScreens != null) { |
| for (int i = 0; i < oldScreens.length; i++) { |
| if (!(screens[i] instanceof Win32GraphicsDevice)) { |
| // REMIND: can we ever have anything other than Win32GD? |
| assert (false) : oldScreens[i]; |
| continue; |
| } |
| Win32GraphicsDevice gd = (Win32GraphicsDevice)oldScreens[i]; |
| // devices may be invalidated from the native code when the |
| // display change happens (device add/removal also causes a |
| // display change) |
| if (!gd.isValid()) { |
| if (oldDevices == null) { |
| oldDevices = |
| new ArrayList<WeakReference<Win32GraphicsDevice>>(); |
| } |
| oldDevices.add(new WeakReference<Win32GraphicsDevice>(gd)); |
| } else if (i < newDevices.length) { |
| // reuse the device |
| newDevices[i] = gd; |
| } |
| } |
| oldScreens = null; |
| } |
| // create the new devices (those that weren't reused) |
| for (int i = 0; i < newDevices.length; i++) { |
| if (newDevices[i] == null) { |
| newDevices[i] = makeScreenDevice(i); |
| } |
| } |
| // install the new array of devices |
| // Note: no synchronization here, it doesn't matter if a thread gets |
| // a new or an old array this time around |
| screens = newDevices; |
| for (GraphicsDevice gd : screens) { |
| if (gd instanceof DisplayChangedListener) { |
| ((DisplayChangedListener)gd).displayChanged(); |
| } |
| } |
| // re-invalidate all old devices. It's needed because those in the list |
| // may become "invalid" again - if the current default device is removed, |
| // for example. Also, they need to be notified about display |
| // changes as well. |
| if (oldDevices != null) { |
| int defScreen = getDefaultScreen(); |
| for (ListIterator<WeakReference<Win32GraphicsDevice>> it = |
| oldDevices.listIterator(); it.hasNext();) |
| { |
| Win32GraphicsDevice gd = it.next().get(); |
| if (gd != null) { |
| gd.invalidate(defScreen); |
| gd.displayChanged(); |
| } else { |
| // no more references to this device, remove it |
| it.remove(); |
| } |
| } |
| } |
| // Reset the static GC for the (possibly new) default screen |
| WToolkit.resetGC(); |
| |
| // notify SunDisplayChanger list (e.g. VolatileSurfaceManagers and |
| // CachingSurfaceManagers) about the display change event |
| displayChanger.notifyListeners(); |
| // note: do not call super.displayChanged, we've already done everything |
| } |
| |
| |
| /* |
| * ----END DISPLAY CHANGE SUPPORT---- |
| */ |
| |
| protected GraphicsDevice makeScreenDevice(int screennum) { |
| GraphicsDevice device = null; |
| if (WindowsFlags.isD3DEnabled()) { |
| device = D3DGraphicsDevice.createDevice(screennum); |
| } |
| if (device == null) { |
| device = new Win32GraphicsDevice(screennum); |
| } |
| return device; |
| } |
| |
| public boolean isDisplayLocal() { |
| return true; |
| } |
| |
| @Override |
| public boolean isFlipStrategyPreferred(ComponentPeer peer) { |
| GraphicsConfiguration gc; |
| if (peer != null && (gc = peer.getGraphicsConfiguration()) != null) { |
| GraphicsDevice gd = gc.getDevice(); |
| if (gd instanceof D3DGraphicsDevice) { |
| return ((D3DGraphicsDevice)gd).isD3DEnabledOnDevice(); |
| } |
| } |
| return false; |
| } |
| |
| private static volatile boolean isDWMCompositionEnabled; |
| /** |
| * Returns true if dwm composition is currently enabled, false otherwise. |
| * |
| * @return true if dwm composition is enabled, false otherwise |
| */ |
| public static boolean isDWMCompositionEnabled() { |
| return isDWMCompositionEnabled; |
| } |
| |
| /** |
| * Called from the native code when DWM composition state changed. |
| * May be called multiple times during the lifetime of the application. |
| * REMIND: we may want to create a listener mechanism for this. |
| * |
| * Note: called on the Toolkit thread, no user code or locks are allowed. |
| * |
| * @param enabled indicates the state of dwm composition |
| */ |
| private static void dwmCompositionChanged(boolean enabled) { |
| isDWMCompositionEnabled = enabled; |
| } |
| |
| /** |
| * Used to find out if the OS is Windows Vista or later. |
| * |
| * @return {@code true} if the OS is Vista or later, {@code false} otherwise |
| */ |
| public static native boolean isVistaOS(); |
| } |