/* * 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.*; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import java.awt.event.WindowEvent; import java.awt.image.BufferedImage; import java.awt.image.DataBuffer; import java.awt.image.DataBufferInt; import java.awt.image.ImageObserver; import java.awt.image.ImageProducer; import java.awt.image.Raster; import java.awt.peer.FramePeer; import java.awt.peer.KeyboardFocusManagerPeer; import java.awt.peer.MouseInfoPeer; import java.awt.peer.SystemTrayPeer; import java.awt.peer.TrayIconPeer; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.InvocationTargetException; import java.net.URL; import java.security.AccessController; import java.util.Collections; import java.util.Iterator; import java.util.Locale; import java.util.Map; import java.util.Vector; import java.util.WeakHashMap; import java.util.concurrent.TimeUnit; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.ReentrantLock; import sun.awt.im.InputContext; import sun.awt.image.ByteArrayImageSource; import sun.awt.image.FileImageSource; import sun.awt.image.ImageRepresentation; import sun.awt.image.MultiResolutionImage; import sun.awt.image.MultiResolutionToolkitImage; import sun.awt.image.ToolkitImage; import sun.awt.image.URLImageSource; import sun.font.FontDesignMetrics; import sun.misc.SoftCache; import sun.security.action.GetBooleanAction; import sun.security.action.GetPropertyAction; import sun.util.logging.PlatformLogger; import static java.awt.RenderingHints.*; public abstract class SunToolkit extends Toolkit implements ComponentFactory, InputMethodSupport, KeyboardFocusManagerPeerProvider { // 8014718: logging has been removed from SunToolkit /* Load debug settings for native code */ static { if (AccessController.doPrivileged(new GetBooleanAction("sun.awt.nativedebug"))) { DebugSettings.init(); } }; /** * Special mask for the UngrabEvent events, in addition to the * public masks defined in AWTEvent. Should be used as the mask * value for Toolkit.addAWTEventListener. */ public static final int GRAB_EVENT_MASK = 0x80000000; /* The key to put()/get() the PostEventQueue into/from the AppContext. */ private static final String POST_EVENT_QUEUE_KEY = "PostEventQueue"; /** * Number of buttons. * By default it's taken from the system. If system value does not * fit into int type range, use our own MAX_BUTTONS_SUPPORT value. */ protected static int numberOfButtons = 0; /* XFree standard mention 24 buttons as maximum: * http://www.xfree86.org/current/mouse.4.html * We workaround systems supporting more than 24 buttons. * Otherwise, we have to use long type values as masks * which leads to API change. * InputEvent.BUTTON_DOWN_MASK may contain only 21 masks due to * the 4-bytes limit for the int type. (CR 6799099) * One more bit is reserved for FIRST_HIGH_BIT. */ public final static int MAX_BUTTONS_SUPPORTED = 20; /** * Creates and initializes EventQueue instance for the specified * AppContext. * Note that event queue must be created from createNewAppContext() * only in order to ensure that EventQueue constructor obtains * the correct AppContext. * @param appContext AppContext to associate with the event queue */ private static void initEQ(AppContext appContext) { EventQueue eventQueue; String eqName = System.getProperty("AWT.EventQueueClass", "java.awt.EventQueue"); try { eventQueue = (EventQueue)Class.forName(eqName).newInstance(); } catch (Exception e) { e.printStackTrace(); System.err.println("Failed loading " + eqName + ": " + e); eventQueue = new EventQueue(); } appContext.put(AppContext.EVENT_QUEUE_KEY, eventQueue); PostEventQueue postEventQueue = new PostEventQueue(eventQueue); appContext.put(POST_EVENT_QUEUE_KEY, postEventQueue); } public SunToolkit() { } public boolean useBufferPerWindow() { return false; } public abstract FramePeer createLightweightFrame(LightweightFrame target) throws HeadlessException; public abstract TrayIconPeer createTrayIcon(TrayIcon target) throws HeadlessException, AWTException; public abstract SystemTrayPeer createSystemTray(SystemTray target); public abstract boolean isTraySupported(); @Override public abstract KeyboardFocusManagerPeer getKeyboardFocusManagerPeer() throws HeadlessException; /** * The AWT lock is typically only used on Unix platforms to synchronize * access to Xlib, OpenGL, etc. However, these methods are implemented * in SunToolkit so that they can be called from shared code (e.g. * from the OGL pipeline) or from the X11 pipeline regardless of whether * XToolkit or MToolkit is currently in use. There are native macros * (such as AWT_LOCK) defined in awt.h, so if the implementation of these * methods is changed, make sure it is compatible with the native macros. * * Note: The following methods (awtLock(), awtUnlock(), etc) should be * used in place of: * synchronized (getAWTLock()) { * ... * } * * By factoring these methods out specially, we are able to change the * implementation of these methods (e.g. use more advanced locking * mechanisms) without impacting calling code. * * Sample usage: * private void doStuffWithXlib() { * assert !SunToolkit.isAWTLockHeldByCurrentThread(); * SunToolkit.awtLock(); * try { * ... * XlibWrapper.XDoStuff(); * } finally { * SunToolkit.awtUnlock(); * } * } */ private static final ReentrantLock AWT_LOCK = new ReentrantLock(); private static final Condition AWT_LOCK_COND = AWT_LOCK.newCondition(); public static final void awtLock() { AWT_LOCK.lock(); } public static final boolean awtTryLock() { return AWT_LOCK.tryLock(); } public static final void awtUnlock() { AWT_LOCK.unlock(); } public static final void awtLockWait() throws InterruptedException { AWT_LOCK_COND.await(); } public static final void awtLockWait(long timeout) throws InterruptedException { AWT_LOCK_COND.await(timeout, TimeUnit.MILLISECONDS); } public static final void awtLockNotify() { AWT_LOCK_COND.signal(); } public static final void awtLockNotifyAll() { AWT_LOCK_COND.signalAll(); } public static final boolean isAWTLockHeldByCurrentThread() { return AWT_LOCK.isHeldByCurrentThread(); } /* * Create a new AppContext, along with its EventQueue, for a * new ThreadGroup. Browser code, for example, would use this * method to create an AppContext & EventQueue for an Applet. */ public static AppContext createNewAppContext() { ThreadGroup threadGroup = Thread.currentThread().getThreadGroup(); return createNewAppContext(threadGroup); } static final AppContext createNewAppContext(ThreadGroup threadGroup) { // Create appContext before initialization of EventQueue, so all // the calls to AppContext.getAppContext() from EventQueue ctor // return correct values AppContext appContext = new AppContext(threadGroup); initEQ(appContext); return appContext; } static void wakeupEventQueue(EventQueue q, boolean isShutdown){ AWTAccessor.getEventQueueAccessor().wakeup(q, isShutdown); } /* * Fetch the peer associated with the given target (as specified * in the peer creation method). This can be used to determine * things like what the parent peer is. If the target is null * or the target can't be found (either because the a peer was * never created for it or the peer was disposed), a null will * be returned. */ protected static Object targetToPeer(Object target) { if (target != null && !GraphicsEnvironment.isHeadless()) { return AWTAutoShutdown.getInstance().getPeer(target); } return null; } protected static void targetCreatedPeer(Object target, Object peer) { if (target != null && peer != null && !GraphicsEnvironment.isHeadless()) { AWTAutoShutdown.getInstance().registerPeer(target, peer); } } protected static void targetDisposedPeer(Object target, Object peer) { if (target != null && peer != null && !GraphicsEnvironment.isHeadless()) { AWTAutoShutdown.getInstance().unregisterPeer(target, peer); } } // Maps from non-Component/MenuComponent to AppContext. // WeakHashMap private static final Map appContextMap = Collections.synchronizedMap(new WeakHashMap()); /** * Sets the appContext field of target. If target is not a Component or * MenuComponent, this returns false. */ private static boolean setAppContext(Object target, AppContext context) { if (target instanceof Component) { AWTAccessor.getComponentAccessor(). setAppContext((Component)target, context); } else if (target instanceof MenuComponent) { AWTAccessor.getMenuComponentAccessor(). setAppContext((MenuComponent)target, context); } else { return false; } return true; } /** * Returns the appContext field for target. If target is not a * Component or MenuComponent this returns null. */ private static AppContext getAppContext(Object target) { if (target instanceof Component) { return AWTAccessor.getComponentAccessor(). getAppContext((Component)target); } else if (target instanceof MenuComponent) { return AWTAccessor.getMenuComponentAccessor(). getAppContext((MenuComponent)target); } else { return null; } } /* * Fetch the AppContext associated with the given target. * This can be used to determine things like which EventQueue * to use for posting events to a Component. If the target is * null or the target can't be found, a null with be returned. */ public static AppContext targetToAppContext(Object target) { if (target == null) { return null; } AppContext context = getAppContext(target); if (context == null) { // target is not a Component/MenuComponent, try the // appContextMap. context = appContextMap.get(target); } return context; } /** * Sets the synchronous status of focus requests on lightweight * components in the specified window to the specified value. * If the boolean parameter is true then the focus * requests on lightweight components will be performed * synchronously, if it is false, then asynchronously. * By default, all windows have their lightweight request status * set to asynchronous. *

* The application can only set the status of lightweight focus * requests to synchronous for any of its windows if it doesn't * perform focus transfers between different heavyweight containers. * In this case the observable focus behaviour is the same as with * asynchronous status. *

* If the application performs focus transfer between different * heavyweight containers and sets the lightweight focus request * status to synchronous for any of its windows, then further focus * behaviour is unspecified. *

* @param w window for which the lightweight focus request status * should be set * @param status the value of lightweight focus request status */ public static void setLWRequestStatus(Window changed,boolean status){ AWTAccessor.getWindowAccessor().setLWRequestStatus(changed, status); }; public static void checkAndSetPolicy(Container cont) { FocusTraversalPolicy defaultPolicy = KeyboardFocusManager. getCurrentKeyboardFocusManager(). getDefaultFocusTraversalPolicy(); cont.setFocusTraversalPolicy(defaultPolicy); } private static FocusTraversalPolicy createLayoutPolicy() { FocusTraversalPolicy policy = null; try { Class layoutPolicyClass = Class.forName("javax.swing.LayoutFocusTraversalPolicy"); policy = (FocusTraversalPolicy)layoutPolicyClass.newInstance(); } catch (ClassNotFoundException e) { assert false; } catch (InstantiationException e) { assert false; } catch (IllegalAccessException e) { assert false; } return policy; } /* * Insert a mapping from target to AppContext, for later retrieval * via targetToAppContext() above. */ public static void insertTargetMapping(Object target, AppContext appContext) { if (!setAppContext(target, appContext)) { // Target is not a Component/MenuComponent, use the private Map // instead. appContextMap.put(target, appContext); } } /* * Post an AWTEvent to the Java EventQueue, using the PostEventQueue * to avoid possibly calling client code (EventQueueSubclass.postEvent()) * on the toolkit (AWT-Windows/AWT-Motif) thread. This function should * not be called under another lock since it locks the EventQueue. * See bugids 4632918, 4526597. */ public static void postEvent(AppContext appContext, AWTEvent event) { if (event == null) { throw new NullPointerException(); } AWTAccessor.SequencedEventAccessor sea = AWTAccessor.getSequencedEventAccessor(); if (sea != null && sea.isSequencedEvent(event)) { AWTEvent nested = sea.getNested(event); if (nested.getID() == WindowEvent.WINDOW_LOST_FOCUS && nested instanceof TimedWindowEvent) { TimedWindowEvent twe = (TimedWindowEvent)nested; ((SunToolkit)Toolkit.getDefaultToolkit()). setWindowDeactivationTime((Window)twe.getSource(), twe.getWhen()); } } // All events posted via this method are system-generated. // Placing the following call here reduces considerably the // number of places throughout the toolkit that would // otherwise have to be modified to precisely identify // system-generated events. setSystemGenerated(event); AppContext eventContext = targetToAppContext(event.getSource()); if (eventContext != null && !eventContext.equals(appContext)) { throw new RuntimeException("Event posted on wrong app context : " + event); } PostEventQueue postEventQueue = (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); if (postEventQueue != null) { postEventQueue.postEvent(event); } } /* * Post AWTEvent of high priority. */ public static void postPriorityEvent(final AWTEvent e) { PeerEvent pe = new PeerEvent(Toolkit.getDefaultToolkit(), new Runnable() { @Override public void run() { AWTAccessor.getAWTEventAccessor().setPosted(e); ((Component)e.getSource()).dispatchEvent(e); } }, PeerEvent.ULTIMATE_PRIORITY_EVENT); postEvent(targetToAppContext(e.getSource()), pe); } /* * Flush any pending events which haven't been posted to the AWT * EventQueue yet. */ public static void flushPendingEvents() { AppContext appContext = AppContext.getAppContext(); flushPendingEvents(appContext); } /* * Flush the PostEventQueue for the right AppContext. * The default flushPendingEvents only flushes the thread-local context, * which is not always correct, c.f. 3746956 */ public static void flushPendingEvents(AppContext appContext) { PostEventQueue postEventQueue = (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); if (postEventQueue != null) { postEventQueue.flush(); } } /* * Execute a chunk of code on the Java event handler thread for the * given target. Does not wait for the execution to occur before * returning to the caller. */ public static void executeOnEventHandlerThread(Object target, Runnable runnable) { executeOnEventHandlerThread(new PeerEvent(target, runnable, PeerEvent.PRIORITY_EVENT)); } /* * Fixed 5064013: the InvocationEvent time should be equals * the time of the ActionEvent */ @SuppressWarnings("serial") public static void executeOnEventHandlerThread(Object target, Runnable runnable, final long when) { executeOnEventHandlerThread( new PeerEvent(target, runnable, PeerEvent.PRIORITY_EVENT) { @Override public long getWhen() { return when; } }); } /* * Execute a chunk of code on the Java event handler thread for the * given target. Does not wait for the execution to occur before * returning to the caller. */ public static void executeOnEventHandlerThread(PeerEvent peerEvent) { postEvent(targetToAppContext(peerEvent.getSource()), peerEvent); } /* * Execute a chunk of code on the Java event handler thread. The * method takes into account provided AppContext and sets * SunToolkit.getDefaultToolkit() as a target of the * event. See 6451487 for detailes. * Does not wait for the execution to occur before returning to * the caller. */ public static void invokeLaterOnAppContext( AppContext appContext, Runnable dispatcher) { postEvent(appContext, new PeerEvent(Toolkit.getDefaultToolkit(), dispatcher, PeerEvent.PRIORITY_EVENT)); } /* * Execute a chunk of code on the Java event handler thread for the * given target. Waits for the execution to occur before returning * to the caller. */ public static void executeOnEDTAndWait(Object target, Runnable runnable) throws InterruptedException, InvocationTargetException { if (EventQueue.isDispatchThread()) { throw new Error("Cannot call executeOnEDTAndWait from any event dispatcher thread"); } class AWTInvocationLock {} Object lock = new AWTInvocationLock(); PeerEvent event = new PeerEvent(target, runnable, lock, true, PeerEvent.PRIORITY_EVENT); synchronized (lock) { executeOnEventHandlerThread(event); while(!event.isDispatched()) { lock.wait(); } } Throwable eventThrowable = event.getThrowable(); if (eventThrowable != null) { throw new InvocationTargetException(eventThrowable); } } /* * Returns true if the calling thread is the event dispatch thread * contained within AppContext which associated with the given target. * Use this call to ensure that a given task is being executed * (or not being) on the event dispatch thread for the given target. */ public static boolean isDispatchThreadForAppContext(Object target) { AppContext appContext = targetToAppContext(target); EventQueue eq = (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY); AWTAccessor.EventQueueAccessor accessor = AWTAccessor.getEventQueueAccessor(); return accessor.isDispatchThreadImpl(eq); } @Override public Dimension getScreenSize() { return new Dimension(getScreenWidth(), getScreenHeight()); } protected abstract int getScreenWidth(); protected abstract int getScreenHeight(); @Override @SuppressWarnings("deprecation") public FontMetrics getFontMetrics(Font font) { return FontDesignMetrics.getMetrics(font); } @Override @SuppressWarnings("deprecation") public String[] getFontList() { String[] hardwiredFontList = { Font.DIALOG, Font.SANS_SERIF, Font.SERIF, Font.MONOSPACED, Font.DIALOG_INPUT // -- Obsolete font names from 1.0.2. It was decided that // -- getFontList should not return these old names: // "Helvetica", "TimesRoman", "Courier", "ZapfDingbats" }; return hardwiredFontList; } /** * Disables erasing of background on the canvas before painting if * this is supported by the current toolkit. It is recommended to * call this method early, before the Canvas becomes displayable, * because some Toolkit implementations do not support changing * this property once the Canvas becomes displayable. */ public void disableBackgroundErase(Canvas canvas) { disableBackgroundEraseImpl(canvas); } /** * Disables the native erasing of the background on the given * component before painting if this is supported by the current * toolkit. This only has an effect for certain components such as * Canvas, Panel and Window. It is recommended to call this method * early, before the Component becomes displayable, because some * Toolkit implementations do not support changing this property * once the Component becomes displayable. */ public void disableBackgroundErase(Component component) { disableBackgroundEraseImpl(component); } private void disableBackgroundEraseImpl(Component component) { AWTAccessor.getComponentAccessor().setBackgroundEraseDisabled(component, true); } /** * Returns the value of "sun.awt.noerasebackground" property. Default * value is {@code false}. */ public static boolean getSunAwtNoerasebackground() { return AccessController.doPrivileged(new GetBooleanAction("sun.awt.noerasebackground")); } /** * Returns the value of "sun.awt.erasebackgroundonresize" property. Default * value is {@code false}. */ public static boolean getSunAwtErasebackgroundonresize() { return AccessController.doPrivileged(new GetBooleanAction("sun.awt.erasebackgroundonresize")); } @SuppressWarnings("deprecation") static final SoftCache imgCache = new SoftCache(); static Image getImageFromHash(Toolkit tk, URL url) { checkPermissions(url); synchronized (imgCache) { Image img = (Image)imgCache.get(url); if (img == null) { try { img = tk.createImage(new URLImageSource(url)); imgCache.put(url, img); } catch (Exception e) { } } return img; } } static Image getImageFromHash(Toolkit tk, String filename) { checkPermissions(filename); synchronized (imgCache) { Image img = (Image)imgCache.get(filename); if (img == null) { try { img = tk.createImage(new FileImageSource(filename)); imgCache.put(filename, img); } catch (Exception e) { } } return img; } } @Override public Image getImage(String filename) { return getImageFromHash(this, filename); } @Override public Image getImage(URL url) { return getImageFromHash(this, url); } protected Image getImageWithResolutionVariant(String fileName, String resolutionVariantName) { synchronized (imgCache) { Image image = getImageFromHash(this, fileName); if (image instanceof MultiResolutionImage) { return image; } Image resolutionVariant = getImageFromHash(this, resolutionVariantName); image = createImageWithResolutionVariant(image, resolutionVariant); imgCache.put(fileName, image); return image; } } protected Image getImageWithResolutionVariant(URL url, URL resolutionVariantURL) { synchronized (imgCache) { Image image = getImageFromHash(this, url); if (image instanceof MultiResolutionImage) { return image; } Image resolutionVariant = getImageFromHash(this, resolutionVariantURL); image = createImageWithResolutionVariant(image, resolutionVariant); imgCache.put(url, image); return image; } } @Override public Image createImage(String filename) { checkPermissions(filename); return createImage(new FileImageSource(filename)); } @Override public Image createImage(URL url) { checkPermissions(url); return createImage(new URLImageSource(url)); } @Override public Image createImage(byte[] data, int offset, int length) { return createImage(new ByteArrayImageSource(data, offset, length)); } @Override public Image createImage(ImageProducer producer) { return new ToolkitImage(producer); } public static Image createImageWithResolutionVariant(Image image, Image resolutionVariant) { return new MultiResolutionToolkitImage(image, resolutionVariant); } @Override public int checkImage(Image img, int w, int h, ImageObserver o) { if (!(img instanceof ToolkitImage)) { return ImageObserver.ALLBITS; } ToolkitImage tkimg = (ToolkitImage)img; int repbits; if (w == 0 || h == 0) { repbits = ImageObserver.ALLBITS; } else { repbits = tkimg.getImageRep().check(o); } return (tkimg.check(o) | repbits) & checkResolutionVariant(img, w, h, o); } @Override public boolean prepareImage(Image img, int w, int h, ImageObserver o) { if (w == 0 || h == 0) { return true; } // Must be a ToolkitImage if (!(img instanceof ToolkitImage)) { return true; } ToolkitImage tkimg = (ToolkitImage)img; if (tkimg.hasError()) { if (o != null) { o.imageUpdate(img, ImageObserver.ERROR|ImageObserver.ABORT, -1, -1, -1, -1); } return false; } ImageRepresentation ir = tkimg.getImageRep(); return ir.prepare(o) & prepareResolutionVariant(img, w, h, o); } private int checkResolutionVariant(Image img, int w, int h, ImageObserver o) { ToolkitImage rvImage = getResolutionVariant(img); int rvw = getRVSize(w); int rvh = getRVSize(h); // Ignore the resolution variant in case of error return (rvImage == null || rvImage.hasError()) ? 0xFFFF : checkImage(rvImage, rvw, rvh, MultiResolutionToolkitImage. getResolutionVariantObserver( img, o, w, h, rvw, rvh, true)); } private boolean prepareResolutionVariant(Image img, int w, int h, ImageObserver o) { ToolkitImage rvImage = getResolutionVariant(img); int rvw = getRVSize(w); int rvh = getRVSize(h); // Ignore the resolution variant in case of error return rvImage == null || rvImage.hasError() || prepareImage( rvImage, rvw, rvh, MultiResolutionToolkitImage.getResolutionVariantObserver( img, o, w, h, rvw, rvh, true)); } private static int getRVSize(int size){ return size == -1 ? -1 : 2 * size; } private static ToolkitImage getResolutionVariant(Image image) { if (image instanceof MultiResolutionToolkitImage) { Image resolutionVariant = ((MultiResolutionToolkitImage) image). getResolutionVariant(); if (resolutionVariant instanceof ToolkitImage) { return (ToolkitImage) resolutionVariant; } } return null; } protected static boolean imageCached(Object key) { return imgCache.containsKey(key); } protected static boolean imageExists(String filename) { if (filename != null) { checkPermissions(filename); return new File(filename).exists(); } return false; } @SuppressWarnings("try") protected static boolean imageExists(URL url) { if (url != null) { checkPermissions(url); try (InputStream is = url.openStream()) { return true; }catch(IOException e){ return false; } } return false; } private static void checkPermissions(String filename) { SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkRead(filename); } } private static void checkPermissions(URL url) { SecurityManager sm = System.getSecurityManager(); if (sm != null) { try { java.security.Permission perm = url.openConnection().getPermission(); if (perm != null) { try { sm.checkPermission(perm); } catch (SecurityException se) { // fallback to checkRead/checkConnect for pre 1.2 // security managers if ((perm instanceof java.io.FilePermission) && perm.getActions().indexOf("read") != -1) { sm.checkRead(perm.getName()); } else if ((perm instanceof java.net.SocketPermission) && perm.getActions().indexOf("connect") != -1) { sm.checkConnect(url.getHost(), url.getPort()); } else { throw se; } } } } catch (java.io.IOException ioe) { sm.checkConnect(url.getHost(), url.getPort()); } } } /** * Scans {@code imageList} for best-looking image of specified dimensions. * Image can be scaled and/or padded with transparency. */ public static BufferedImage getScaledIconImage(java.util.List imageList, int width, int height) { if (width == 0 || height == 0) { return null; } Image bestImage = null; int bestWidth = 0; int bestHeight = 0; double bestSimilarity = 3; //Impossibly high value double bestScaleFactor = 0; for (Iterator i = imageList.iterator();i.hasNext();) { //Iterate imageList looking for best matching image. //'Similarity' measure is defined as good scale factor and small insets. //best possible similarity is 0 (no scale, no insets). //It's found while the experiments that good-looking result is achieved //with scale factors x1, x3/4, x2/3, xN, x1/N. Image im = i.next(); if (im == null) { continue; } if (im instanceof ToolkitImage) { ImageRepresentation ir = ((ToolkitImage)im).getImageRep(); ir.reconstruct(ImageObserver.ALLBITS); } int iw; int ih; try { iw = im.getWidth(null); ih = im.getHeight(null); } catch (Exception e){ continue; } if (iw > 0 && ih > 0) { //Calc scale factor double scaleFactor = Math.min((double)width / (double)iw, (double)height / (double)ih); //Calculate scaled image dimensions //adjusting scale factor to nearest "good" value int adjw = 0; int adjh = 0; double scaleMeasure = 1; //0 - best (no) scale, 1 - impossibly bad if (scaleFactor >= 2) { //Need to enlarge image more than twice //Round down scale factor to multiply by integer value scaleFactor = Math.floor(scaleFactor); adjw = iw * (int)scaleFactor; adjh = ih * (int)scaleFactor; scaleMeasure = 1.0 - 0.5 / scaleFactor; } else if (scaleFactor >= 1) { //Don't scale scaleFactor = 1.0; adjw = iw; adjh = ih; scaleMeasure = 0; } else if (scaleFactor >= 0.75) { //Multiply by 3/4 scaleFactor = 0.75; adjw = iw * 3 / 4; adjh = ih * 3 / 4; scaleMeasure = 0.3; } else if (scaleFactor >= 0.6666) { //Multiply by 2/3 scaleFactor = 0.6666; adjw = iw * 2 / 3; adjh = ih * 2 / 3; scaleMeasure = 0.33; } else { //Multiply size by 1/scaleDivider //where scaleDivider is minimum possible integer //larger than 1/scaleFactor double scaleDivider = Math.ceil(1.0 / scaleFactor); scaleFactor = 1.0 / scaleDivider; adjw = (int)Math.round((double)iw / scaleDivider); adjh = (int)Math.round((double)ih / scaleDivider); scaleMeasure = 1.0 - 1.0 / scaleDivider; } double similarity = ((double)width - (double)adjw) / (double)width + ((double)height - (double)adjh) / (double)height + //Large padding is bad scaleMeasure; //Large rescale is bad if (similarity < bestSimilarity) { bestSimilarity = similarity; bestScaleFactor = scaleFactor; bestImage = im; bestWidth = adjw; bestHeight = adjh; } if (similarity == 0) break; } } if (bestImage == null) { //No images were found, possibly all are broken return null; } BufferedImage bimage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D g = bimage.createGraphics(); g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); try { int x = (width - bestWidth) / 2; int y = (height - bestHeight) / 2; g.drawImage(bestImage, x, y, bestWidth, bestHeight, null); } finally { g.dispose(); } return bimage; } public static DataBufferInt getScaledIconData(java.util.List imageList, int width, int height) { BufferedImage bimage = getScaledIconImage(imageList, width, height); if (bimage == null) { return null; } Raster raster = bimage.getRaster(); DataBuffer buffer = raster.getDataBuffer(); return (DataBufferInt)buffer; } @Override protected EventQueue getSystemEventQueueImpl() { return getSystemEventQueueImplPP(); } // Package private implementation static EventQueue getSystemEventQueueImplPP() { return getSystemEventQueueImplPP(AppContext.getAppContext()); } public static EventQueue getSystemEventQueueImplPP(AppContext appContext) { EventQueue theEventQueue = (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY); return theEventQueue; } /** * Give native peers the ability to query the native container * given a native component (eg the direct parent may be lightweight). */ public static Container getNativeContainer(Component c) { return Toolkit.getNativeContainer(c); } /** * Gives native peers the ability to query the closest HW component. * If the given component is heavyweight, then it returns this. Otherwise, * it goes one level up in the hierarchy and tests next component. */ public static Component getHeavyweightComponent(Component c) { while (c != null && AWTAccessor.getComponentAccessor().isLightweight(c)) { c = AWTAccessor.getComponentAccessor().getParent(c); } return c; } /** * Returns key modifiers used by Swing to set up a focus accelerator key stroke. */ public int getFocusAcceleratorKeyMask() { return InputEvent.ALT_MASK; } /** * Tests whether specified key modifiers mask can be used to enter a printable * character. This is a default implementation of this method, which reflects * the way things work on Windows: here, pressing ctrl + alt allows user to enter * characters from the extended character set (like euro sign or math symbols) */ public boolean isPrintableCharacterModifiersMask(int mods) { return ((mods & InputEvent.ALT_MASK) == (mods & InputEvent.CTRL_MASK)); } /** * Returns whether popup is allowed to be shown above the task bar. * This is a default implementation of this method, which checks * corresponding security permission. */ public boolean canPopupOverlapTaskBar() { boolean result = true; try { SecurityManager sm = System.getSecurityManager(); if (sm != null) { sm.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION); } } catch (SecurityException se) { // There is no permission to show popups over the task bar result = false; } return result; } /** * Returns a new input method window, with behavior as specified in * {@link java.awt.im.spi.InputMethodContext#createInputMethodWindow}. * If the inputContext is not null, the window should return it from its * getInputContext() method. The window needs to implement * sun.awt.im.InputMethodWindow. *

* SunToolkit subclasses can override this method to return better input * method windows. */ @Override public Window createInputMethodWindow(String title, InputContext context) { return new sun.awt.im.SimpleInputMethodWindow(title, context); } /** * Returns whether enableInputMethods should be set to true for peered * TextComponent instances on this platform. False by default. */ @Override public boolean enableInputMethodsForTextComponent() { return false; } private static Locale startupLocale = null; /** * Returns the locale in which the runtime was started. */ public static Locale getStartupLocale() { if (startupLocale == null) { String language, region, country, variant; language = AccessController.doPrivileged( new GetPropertyAction("user.language", "en")); // for compatibility, check for old user.region property region = AccessController.doPrivileged( new GetPropertyAction("user.region")); if (region != null) { // region can be of form country, country_variant, or _variant int i = region.indexOf('_'); if (i >= 0) { country = region.substring(0, i); variant = region.substring(i + 1); } else { country = region; variant = ""; } } else { country = AccessController.doPrivileged( new GetPropertyAction("user.country", "")); variant = AccessController.doPrivileged( new GetPropertyAction("user.variant", "")); } startupLocale = new Locale(language, country, variant); } return startupLocale; } /** * Returns the default keyboard locale of the underlying operating system */ @Override public Locale getDefaultKeyboardLocale() { return getStartupLocale(); } private static DefaultMouseInfoPeer mPeer = null; @Override public synchronized MouseInfoPeer getMouseInfoPeer() { if (mPeer == null) { mPeer = new DefaultMouseInfoPeer(); } return mPeer; } /** * Returns whether default toolkit needs the support of the xembed * from embedding host(if any). * @return true, if XEmbed is needed, false otherwise */ public static boolean needsXEmbed() { String noxembed = AccessController. doPrivileged(new GetPropertyAction("sun.awt.noxembed", "false")); if ("true".equals(noxembed)) { return false; } Toolkit tk = Toolkit.getDefaultToolkit(); if (tk instanceof SunToolkit) { // SunToolkit descendants should override this method to specify // concrete behavior return ((SunToolkit)tk).needsXEmbedImpl(); } else { // Non-SunToolkit doubtly might support XEmbed return false; } } /** * Returns whether this toolkit needs the support of the xembed * from embedding host(if any). * @return true, if XEmbed is needed, false otherwise */ protected boolean needsXEmbedImpl() { return false; } private static Dialog.ModalExclusionType DEFAULT_MODAL_EXCLUSION_TYPE = null; /** * Returns whether the XEmbed server feature is requested by * developer. If true, Toolkit should return an * XEmbed-server-enabled CanvasPeer instead of the ordinary CanvasPeer. */ protected final boolean isXEmbedServerRequested() { return AccessController.doPrivileged(new GetBooleanAction("sun.awt.xembedserver")); } /** * Returns whether the modal exclusion API is supported by the current toolkit. * When it isn't supported, calling setModalExcluded has no * effect, and isModalExcluded returns false for all windows. * * @return true if modal exclusion is supported by the toolkit, false otherwise * * @see sun.awt.SunToolkit#setModalExcluded(java.awt.Window) * @see sun.awt.SunToolkit#isModalExcluded(java.awt.Window) * * @since 1.5 */ public static boolean isModalExcludedSupported() { Toolkit tk = Toolkit.getDefaultToolkit(); return tk.isModalExclusionTypeSupported(DEFAULT_MODAL_EXCLUSION_TYPE); } /* * Default implementation for isModalExcludedSupportedImpl(), returns false. * * @see sun.awt.windows.WToolkit#isModalExcludeSupportedImpl * @see sun.awt.X11.XToolkit#isModalExcludeSupportedImpl * * @since 1.5 */ protected boolean isModalExcludedSupportedImpl() { return false; } /* * Sets this window to be excluded from being modally blocked. When the * toolkit supports modal exclusion and this method is called, input * events, focus transfer and z-order will continue to work for the * window, it's owned windows and child components, even in the * presence of a modal dialog. * For details on which Windows are normally blocked * by modal dialog, see {@link java.awt.Dialog}. * Invoking this method when the modal exclusion API is not supported by * the current toolkit has no effect. * @param window Window to be marked as not modally blocked * @see java.awt.Dialog * @see java.awt.Dialog#setModal(boolean) * @see sun.awt.SunToolkit#isModalExcludedSupported * @see sun.awt.SunToolkit#isModalExcluded(java.awt.Window) */ public static void setModalExcluded(Window window) { if (DEFAULT_MODAL_EXCLUSION_TYPE == null) { DEFAULT_MODAL_EXCLUSION_TYPE = Dialog.ModalExclusionType.APPLICATION_EXCLUDE; } window.setModalExclusionType(DEFAULT_MODAL_EXCLUSION_TYPE); } /* * Returns whether the specified window is blocked by modal dialogs. * If the modal exclusion API isn't supported by the current toolkit, * it returns false for all windows. * * @param window Window to test for modal exclusion * * @return true if the window is modal excluded, false otherwise. If * the modal exclusion isn't supported by the current Toolkit, false * is returned * * @see sun.awt.SunToolkit#isModalExcludedSupported * @see sun.awt.SunToolkit#setModalExcluded(java.awt.Window) * * @since 1.5 */ public static boolean isModalExcluded(Window window) { if (DEFAULT_MODAL_EXCLUSION_TYPE == null) { DEFAULT_MODAL_EXCLUSION_TYPE = Dialog.ModalExclusionType.APPLICATION_EXCLUDE; } return window.getModalExclusionType().compareTo(DEFAULT_MODAL_EXCLUSION_TYPE) >= 0; } /** * Overridden in XToolkit and WToolkit */ @Override public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) { return (modalityType == Dialog.ModalityType.MODELESS) || (modalityType == Dialog.ModalityType.APPLICATION_MODAL); } /** * Overridden in XToolkit and WToolkit */ @Override public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) { return (exclusionType == Dialog.ModalExclusionType.NO_EXCLUDE); } /////////////////////////////////////////////////////////////////////////// // // The following is used by the Java Plug-in to coordinate dialog modality // between containing applications (browsers, ActiveX containers etc) and // the AWT. // /////////////////////////////////////////////////////////////////////////// private ModalityListenerList modalityListeners = new ModalityListenerList(); public void addModalityListener(ModalityListener listener) { modalityListeners.add(listener); } public void removeModalityListener(ModalityListener listener) { modalityListeners.remove(listener); } public void notifyModalityPushed(Dialog dialog) { notifyModalityChange(ModalityEvent.MODALITY_PUSHED, dialog); } public void notifyModalityPopped(Dialog dialog) { notifyModalityChange(ModalityEvent.MODALITY_POPPED, dialog); } final void notifyModalityChange(int id, Dialog source) { ModalityEvent ev = new ModalityEvent(source, modalityListeners, id); ev.dispatch(); } static class ModalityListenerList implements ModalityListener { Vector listeners = new Vector(); void add(ModalityListener listener) { listeners.addElement(listener); } void remove(ModalityListener listener) { listeners.removeElement(listener); } @Override public void modalityPushed(ModalityEvent ev) { Iterator it = listeners.iterator(); while (it.hasNext()) { it.next().modalityPushed(ev); } } @Override public void modalityPopped(ModalityEvent ev) { Iterator it = listeners.iterator(); while (it.hasNext()) { it.next().modalityPopped(ev); } } } // end of class ModalityListenerList /////////////////////////////////////////////////////////////////////////// // End Plug-in code /////////////////////////////////////////////////////////////////////////// public static boolean isLightweightOrUnknown(Component comp) { if (comp.isLightweight() || !(getDefaultToolkit() instanceof SunToolkit)) { return true; } return !(comp instanceof Button || comp instanceof Canvas || comp instanceof Checkbox || comp instanceof Choice || comp instanceof Label || comp instanceof java.awt.List || comp instanceof Panel || comp instanceof Scrollbar || comp instanceof ScrollPane || comp instanceof TextArea || comp instanceof TextField || comp instanceof Window); } @SuppressWarnings("serial") public static class OperationTimedOut extends RuntimeException { public OperationTimedOut(String msg) { super(msg); } public OperationTimedOut() { } } @SuppressWarnings("serial") public static class InfiniteLoop extends RuntimeException { } @SuppressWarnings("serial") public static class IllegalThreadException extends RuntimeException { public IllegalThreadException(String msg) { super(msg); } public IllegalThreadException() { } } public static final int DEFAULT_WAIT_TIME = 10000; private static final int MAX_ITERS = 20; private static final int MIN_ITERS = 0; private static final int MINIMAL_EDELAY = 0; /** * Parameterless version of realsync which uses default timout (see DEFAUL_WAIT_TIME). */ public void realSync() throws OperationTimedOut, InfiniteLoop { realSync(DEFAULT_WAIT_TIME); } /** * Forces toolkit to synchronize with the native windowing * sub-system, flushing all pending work and waiting for all the * events to be processed. This method guarantees that after * return no additional Java events will be generated, unless * cause by user. Obviously, the method cannot be used on the * event dispatch thread (EDT). In case it nevertheless gets * invoked on this thread, the method throws the * IllegalThreadException runtime exception. * *

This method allows to write tests without explicit timeouts * or wait for some event. Example: * * Frame f = ...; * f.setVisible(true); * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); * * *

After realSync, f will be completely visible * on the screen, its getLocationOnScreen will be returning the * right result and it will be the focus owner. * *

Another example: * * b.requestFocus(); * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); * * *

After realSync, b will be focus owner. * *

Notice that realSync isn't guaranteed to work if recurring * actions occur, such as if during processing of some event * another request which may generate some events occurs. By * default, sync tries to perform as much as {@value MAX_ITERS} * cycles of event processing, allowing for roughly {@value * MAX_ITERS} additional requests. * *

For example, requestFocus() generates native request, which * generates one or two Java focus events, which then generate a * serie of paint events, a serie of Java focus events, which then * generate a serie of paint events which then are processed - * three cycles, minimum. * * @param timeout the maximum time to wait in milliseconds, negative means "forever". */ public void realSync(final long timeout) throws OperationTimedOut, InfiniteLoop { if (EventQueue.isDispatchThread()) { throw new IllegalThreadException("The SunToolkit.realSync() method cannot be used on the event dispatch thread (EDT)."); } int bigLoop = 0; do { // Let's do sync first sync(); // During the wait process, when we were processing incoming // events, we could have made some new request, which can // generate new events. Example: MapNotify/XSetInputFocus. // Therefore, we dispatch them as long as there is something // to dispatch. int iters = 0; while (iters < MIN_ITERS) { syncNativeQueue(timeout); iters++; } while (syncNativeQueue(timeout) && iters < MAX_ITERS) { iters++; } if (iters >= MAX_ITERS) { throw new InfiniteLoop(); } // native requests were dispatched by X/Window Manager or Windows // Moreover, we processed them all on Toolkit thread // Now wait while EDT processes them. // // During processing of some events (focus, for example), // some other events could have been generated. So, after // waitForIdle, we may end up with full EventQueue iters = 0; while (iters < MIN_ITERS) { waitForIdle(timeout); iters++; } while (waitForIdle(timeout) && iters < MAX_ITERS) { iters++; } if (iters >= MAX_ITERS) { throw new InfiniteLoop(); } bigLoop++; // Again, for Java events, it was simple to check for new Java // events by checking event queue, but what if Java events // resulted in native requests? Therefor, check native events again. } while ((syncNativeQueue(timeout) || waitForIdle(timeout)) && bigLoop < MAX_ITERS); } /** * Platform toolkits need to implement this method to perform the * sync of the native queue. The method should wait until native * requests are processed, all native events are processed and * corresponding Java events are generated. Should return * true if some events were processed, * false otherwise. */ protected abstract boolean syncNativeQueue(final long timeout); private boolean eventDispatched = false; private boolean queueEmpty = false; private final Object waitLock = "Wait Lock"; private boolean isEQEmpty() { EventQueue queue = getSystemEventQueueImpl(); return AWTAccessor.getEventQueueAccessor().noEvents(queue); } /** * Waits for the Java event queue to empty. Ensures that all * events are processed (including paint events), and that if * recursive events were generated, they are also processed. * Should return true if more processing is * necessary, false otherwise. */ @SuppressWarnings("serial") protected final boolean waitForIdle(final long timeout) { flushPendingEvents(); boolean queueWasEmpty = isEQEmpty(); queueEmpty = false; eventDispatched = false; synchronized(waitLock) { postEvent(AppContext.getAppContext(), new PeerEvent(getSystemEventQueueImpl(), null, PeerEvent.LOW_PRIORITY_EVENT) { @Override public void dispatch() { // Here we block EDT. It could have some // events, it should have dispatched them by // now. So native requests could have been // generated. First, dispatch them. Then, // flush Java events again. int iters = 0; while (iters < MIN_ITERS) { syncNativeQueue(timeout); iters++; } while (syncNativeQueue(timeout) && iters < MAX_ITERS) { iters++; } flushPendingEvents(); synchronized(waitLock) { queueEmpty = isEQEmpty(); eventDispatched = true; waitLock.notifyAll(); } } }); try { while (!eventDispatched) { waitLock.wait(); } } catch (InterruptedException ie) { return false; } } try { Thread.sleep(MINIMAL_EDELAY); } catch (InterruptedException ie) { throw new RuntimeException("Interrupted"); } flushPendingEvents(); // Lock to force write-cache flush for queueEmpty. synchronized (waitLock) { return !(queueEmpty && isEQEmpty() && queueWasEmpty); } } /** * Grabs the mouse input for the given window. The window must be * visible. The window or its children do not receive any * additional mouse events besides those targeted to them. All * other events will be dispatched as before - to the respective * targets. This Window will receive UngrabEvent when automatic * ungrab is about to happen. The event can be listened to by * installing AWTEventListener with WINDOW_EVENT_MASK. See * UngrabEvent class for the list of conditions when ungrab is * about to happen. * @see UngrabEvent */ public abstract void grab(Window w); /** * Forces ungrab. No event will be sent. */ public abstract void ungrab(Window w); /** * Locates the splash screen library in a platform dependent way and closes * the splash screen. Should be invoked on first top-level frame display. * @see java.awt.SplashScreen * @since 1.6 */ public static native void closeSplashScreen(); /* The following methods and variables are to support retrieving * desktop text anti-aliasing settings */ /* Need an instance method because setDesktopProperty(..) is protected. */ private void fireDesktopFontPropertyChanges() { setDesktopProperty(SunToolkit.DESKTOPFONTHINTS, SunToolkit.getDesktopFontHints()); } private static boolean checkedSystemAAFontSettings; private static boolean useSystemAAFontSettings; private static boolean lastExtraCondition = true; private static RenderingHints desktopFontHints; /* Since Swing is the reason for this "extra condition" logic its * worth documenting it in some detail. * First, a goal is for Swing and applications to both retrieve and * use the same desktop property value so that there is complete * consistency between the settings used by JDK's Swing implementation * and 3rd party custom Swing components, custom L&Fs and any general * text rendering that wants to be consistent with these. * But by default on Solaris & Linux Swing will not use AA text over * remote X11 display (unless Xrender can be used which is TBD and may not * always be available anyway) as that is a noticeable performance hit. * So there needs to be a way to express that extra condition so that * it is seen by all clients of the desktop property API. * If this were the only condition it could be handled here as it would * be the same for any L&F and could reasonably be considered to be * a static behaviour of those systems. * But GTK currently has an additional test based on locale which is * not applied by Metal. So mixing GTK in a few locales with Metal * would mean the last one wins. * This could be stored per-app context which would work * for different applets, but wouldn't help for a single application * using GTK and some other L&F concurrently. * But it is expected this will be addressed within GTK and the font * system so is a temporary and somewhat unlikely harmless corner case. */ public static void setAAFontSettingsCondition(boolean extraCondition) { if (extraCondition != lastExtraCondition) { lastExtraCondition = extraCondition; if (checkedSystemAAFontSettings) { /* Someone already asked for this info, under a different * condition. * We'll force re-evaluation instead of replicating the * logic, then notify any listeners of any change. */ checkedSystemAAFontSettings = false; Toolkit tk = Toolkit.getDefaultToolkit(); if (tk instanceof SunToolkit) { ((SunToolkit)tk).fireDesktopFontPropertyChanges(); } } } } /* "false", "off", ""default" aren't explicitly tested, they * just fall through to produce a null return which all are equated to * "false". */ private static RenderingHints getDesktopAAHintsByName(String hintname) { Object aaHint = null; hintname = hintname.toLowerCase(Locale.ENGLISH); if (hintname.equals("on")) { aaHint = VALUE_TEXT_ANTIALIAS_ON; } else if (hintname.equals("gasp")) { aaHint = VALUE_TEXT_ANTIALIAS_GASP; } else if (hintname.equals("lcd") || hintname.equals("lcd_hrgb")) { aaHint = VALUE_TEXT_ANTIALIAS_LCD_HRGB; } else if (hintname.equals("lcd_hbgr")) { aaHint = VALUE_TEXT_ANTIALIAS_LCD_HBGR; } else if (hintname.equals("lcd_vrgb")) { aaHint = VALUE_TEXT_ANTIALIAS_LCD_VRGB; } else if (hintname.equals("lcd_vbgr")) { aaHint = VALUE_TEXT_ANTIALIAS_LCD_VBGR; } if (aaHint != null) { RenderingHints map = new RenderingHints(null); map.put(KEY_TEXT_ANTIALIASING, aaHint); return map; } else { return null; } } /* This method determines whether to use the system font settings, * or ignore them if a L&F has specified they should be ignored, or * to override both of these with a system property specified value. * If the toolkit isn't a SunToolkit, (eg may be headless) then that * system property isn't applied as desktop properties are considered * to be inapplicable in that case. In that headless case although * this method will return "true" the toolkit will return a null map. */ private static boolean useSystemAAFontSettings() { if (!checkedSystemAAFontSettings) { useSystemAAFontSettings = true; /* initially set this true */ String systemAAFonts = null; Toolkit tk = Toolkit.getDefaultToolkit(); if (tk instanceof SunToolkit) { systemAAFonts = AccessController.doPrivileged( new GetPropertyAction("awt.useSystemAAFontSettings")); } if (systemAAFonts != null) { useSystemAAFontSettings = Boolean.valueOf(systemAAFonts).booleanValue(); /* If it is anything other than "true", then it may be * a hint name , or it may be "off, "default", etc. */ if (!useSystemAAFontSettings) { desktopFontHints = getDesktopAAHintsByName(systemAAFonts); } } /* If its still true, apply the extra condition */ if (useSystemAAFontSettings) { useSystemAAFontSettings = lastExtraCondition; } checkedSystemAAFontSettings = true; } return useSystemAAFontSettings; } /* A variable defined for the convenience of JDK code */ public static final String DESKTOPFONTHINTS = "awt.font.desktophints"; /* Overridden by subclasses to return platform/desktop specific values */ protected RenderingHints getDesktopAAHints() { return null; } /* Subclass desktop property loading methods call this which * in turn calls the appropriate subclass implementation of * getDesktopAAHints() when system settings are being used. * Its public rather than protected because subclasses may delegate * to a helper class. */ public static RenderingHints getDesktopFontHints() { if (useSystemAAFontSettings()) { Toolkit tk = Toolkit.getDefaultToolkit(); if (tk instanceof SunToolkit) { Object map = ((SunToolkit)tk).getDesktopAAHints(); return (RenderingHints)map; } else { /* Headless Toolkit */ return null; } } else if (desktopFontHints != null) { /* cloning not necessary as the return value is cloned later, but * its harmless. */ return (RenderingHints)(desktopFontHints.clone()); } else { return null; } } public abstract boolean isDesktopSupported(); /* * consumeNextKeyTyped() method is not currently used, * however Swing could use it in the future. */ public static synchronized void consumeNextKeyTyped(KeyEvent keyEvent) { try { AWTAccessor.getDefaultKeyboardFocusManagerAccessor().consumeNextKeyTyped( (DefaultKeyboardFocusManager)KeyboardFocusManager. getCurrentKeyboardFocusManager(), keyEvent); } catch (ClassCastException cce) { cce.printStackTrace(); } } protected static void dumpPeers(final PlatformLogger aLog) { AWTAutoShutdown.getInstance().dumpPeers(aLog); } /** * Returns the Window ancestor of the component comp. * @return Window ancestor of the component or component by itself if it is Window; * null, if component is not a part of window hierarchy */ public static Window getContainingWindow(Component comp) { while (comp != null && !(comp instanceof Window)) { comp = comp.getParent(); } return (Window)comp; } private static Boolean sunAwtDisableMixing = null; /** * Returns the value of "sun.awt.disableMixing" property. Default * value is {@code false}. */ public synchronized static boolean getSunAwtDisableMixing() { if (sunAwtDisableMixing == null) { sunAwtDisableMixing = AccessController.doPrivileged( new GetBooleanAction("sun.awt.disableMixing")); } return sunAwtDisableMixing.booleanValue(); } /** * Returns true if the native GTK libraries are available. The * default implementation returns false, but UNIXToolkit overrides this * method to provide a more specific answer. */ public boolean isNativeGTKAvailable() { return false; } private static final Object DEACTIVATION_TIMES_MAP_KEY = new Object(); public synchronized void setWindowDeactivationTime(Window w, long time) { AppContext ctx = getAppContext(w); if (ctx == null) { return; } @SuppressWarnings("unchecked") WeakHashMap map = (WeakHashMap)ctx.get(DEACTIVATION_TIMES_MAP_KEY); if (map == null) { map = new WeakHashMap(); ctx.put(DEACTIVATION_TIMES_MAP_KEY, map); } map.put(w, time); } public synchronized long getWindowDeactivationTime(Window w) { AppContext ctx = getAppContext(w); if (ctx == null) { return -1; } @SuppressWarnings("unchecked") WeakHashMap map = (WeakHashMap)ctx.get(DEACTIVATION_TIMES_MAP_KEY); if (map == null) { return -1; } Long time = map.get(w); return time == null ? -1 : time; } // Cosntant alpha public boolean isWindowOpacitySupported() { return false; } // Shaping public boolean isWindowShapingSupported() { return false; } // Per-pixel alpha public boolean isWindowTranslucencySupported() { return false; } public boolean isTranslucencyCapable(GraphicsConfiguration gc) { return false; } /** * Returns true if swing backbuffer should be translucent. */ public boolean isSwingBackbufferTranslucencySupported() { return false; } /** * Returns whether or not a containing top level window for the passed * component is * {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}. * * @param c a Component which toplevel's to check * @return {@code true} if the passed component is not null and has a * containing toplevel window which is opaque (so per-pixel translucency * is not enabled), {@code false} otherwise * @see GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT */ public static boolean isContainingTopLevelOpaque(Component c) { Window w = getContainingWindow(c); return w != null && w.isOpaque(); } /** * Returns whether or not a containing top level window for the passed * component is * {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}. * * @param c a Component which toplevel's to check * @return {@code true} if the passed component is not null and has a * containing toplevel window which has opacity less than * 1.0f (which means that it is translucent), {@code false} otherwise * @see GraphicsDevice.WindowTranslucency#TRANSLUCENT */ public static boolean isContainingTopLevelTranslucent(Component c) { Window w = getContainingWindow(c); return w != null && w.getOpacity() < 1.0f; } /** * Returns whether the native system requires using the peer.updateWindow() * method to update the contents of a non-opaque window, or if usual * painting procedures are sufficient. The default return value covers * the X11 systems. On MS Windows this method is overriden in WToolkit * to return true. */ public boolean needUpdateWindow() { return false; } /** * Descendants of the SunToolkit should override and put their own logic here. */ public int getNumberOfButtons(){ return 3; } /** * Checks that the given object implements/extends the given * interface/class. * * Note that using the instanceof operator causes a class to be loaded. * Using this method doesn't load a class and it can be used instead of * the instanceof operator for performance reasons. * * @param obj Object to be checked * @param type The name of the interface/class. Must be * fully-qualified interface/class name. * @return true, if this object implements/extends the given * interface/class, false, otherwise, or if obj or type is null */ public static boolean isInstanceOf(Object obj, String type) { if (obj == null) return false; if (type == null) return false; return isInstanceOf(obj.getClass(), type); } private static boolean isInstanceOf(Class cls, String type) { if (cls == null) return false; if (cls.getName().equals(type)) { return true; } for (Class c : cls.getInterfaces()) { if (c.getName().equals(type)) { return true; } } return isInstanceOf(cls.getSuperclass(), type); } protected static LightweightFrame getLightweightFrame(Component c) { for (; c != null; c = c.getParent()) { if (c instanceof LightweightFrame) { return (LightweightFrame)c; } if (c instanceof Window) { // Don't traverse owner windows return null; } } return null; } /////////////////////////////////////////////////////////////////////////// // // The following methods help set and identify whether a particular // AWTEvent object was produced by the system or by user code. As of this // writing the only consumer is the Java Plug-In, although this information // could be useful to more clients and probably should be formalized in // the public API. // /////////////////////////////////////////////////////////////////////////// public static void setSystemGenerated(AWTEvent e) { AWTAccessor.getAWTEventAccessor().setSystemGenerated(e); } public static boolean isSystemGenerated(AWTEvent e) { return AWTAccessor.getAWTEventAccessor().isSystemGenerated(e); } } // class SunToolkit /* * PostEventQueue is a Thread that runs in the same AppContext as the * Java EventQueue. It is a queue of AWTEvents to be posted to the * Java EventQueue. The toolkit Thread (AWT-Windows/AWT-Motif) posts * events to this queue, which then calls EventQueue.postEvent(). * * We do this because EventQueue.postEvent() may be overridden by client * code, and we mustn't ever call client code from the toolkit thread. */ class PostEventQueue { private EventQueueItem queueHead = null; private EventQueueItem queueTail = null; private final EventQueue eventQueue; private Thread flushThread = null; PostEventQueue(EventQueue eq) { eventQueue = eq; } /* * Continually post pending AWTEvents to the Java EventQueue. The method * is synchronized to ensure the flush is completed before a new event * can be posted to this queue. * * 7177040: The method couldn't be wholly synchronized because of calls * of EventQueue.postEvent() that uses pushPopLock, otherwise it could * potentially lead to deadlock */ public void flush() { Thread newThread = Thread.currentThread(); try { EventQueueItem tempQueue; synchronized (this) { // Avoid method recursion if (newThread == flushThread) { return; } // Wait for other threads' flushing while (flushThread != null) { wait(); } // Skip everything if queue is empty if (queueHead == null) { return; } // Remember flushing thread flushThread = newThread; tempQueue = queueHead; queueHead = queueTail = null; } try { while (tempQueue != null) { eventQueue.postEvent(tempQueue.event); tempQueue = tempQueue.next; } } finally { // Only the flushing thread can get here synchronized (this) { // Forget flushing thread, inform other pending threads flushThread = null; notifyAll(); } } } catch (InterruptedException e) { // Couldn't allow exception go up, so at least recover the flag newThread.interrupt(); } } /* * Enqueue an AWTEvent to be posted to the Java EventQueue. */ void postEvent(AWTEvent event) { EventQueueItem item = new EventQueueItem(event); synchronized (this) { if (queueHead == null) { queueHead = queueTail = item; } else { queueTail.next = item; queueTail = item; } } SunToolkit.wakeupEventQueue(eventQueue, event.getSource() == AWTAutoShutdown.getInstance()); } } // class PostEventQueue