| /* | |
| * Copyright (c) 1997, 2024, 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.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(); | |
| initDisplay(); | |
| 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(); | |
| public Win32GraphicsEnvironment() { | |
| } | |
| @Override | |
| protected native int getNumScreens(); | |
| private native int getDefaultScreen(); | |
| @Override | |
| 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(); | |
| } | |
| } | |
| } | |
| // 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---- | |
| */ | |
| @Override | |
| protected GraphicsDevice makeScreenDevice(int screennum) { | |
| GraphicsDevice device = null; | |
| if (WindowsFlags.isD3DEnabled()) { | |
| device = D3DGraphicsDevice.createDevice(screennum); | |
| } | |
| if (device == null) { | |
| device = new Win32GraphicsDevice(screennum); | |
| } | |
| return device; | |
| } | |
| @Override | |
| 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(); | |
| } |