1 /* 2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.awt; 27 28 import java.awt.AWTEvent; 29 import java.awt.AWTException; 30 import java.awt.Button; 31 import java.awt.Canvas; 32 import java.awt.Checkbox; 33 import java.awt.Choice; 34 import java.awt.Component; 35 import java.awt.Container; 36 import java.awt.DefaultKeyboardFocusManager; 37 import java.awt.Dialog; 38 import java.awt.Dimension; 39 import java.awt.EventQueue; 40 import java.awt.FocusTraversalPolicy; 41 import java.awt.Font; 42 import java.awt.FontMetrics; 43 import java.awt.Graphics2D; 44 import java.awt.GraphicsConfiguration; 45 import java.awt.GraphicsDevice; 46 import java.awt.GraphicsEnvironment; 47 import java.awt.HeadlessException; 48 import java.awt.Image; 49 import java.awt.KeyboardFocusManager; 50 import java.awt.Label; 51 import java.awt.MenuComponent; 52 import java.awt.Panel; 53 import java.awt.RenderingHints; 54 import java.awt.ScrollPane; 55 import java.awt.Scrollbar; 56 import java.awt.SystemTray; 57 import java.awt.TextArea; 58 import java.awt.TextField; 59 import java.awt.Toolkit; 60 import java.awt.TrayIcon; 61 import java.awt.Window; 62 import java.awt.event.InputEvent; 63 import java.awt.event.KeyEvent; 64 import java.awt.event.WindowEvent; 65 import java.awt.image.BufferedImage; 66 import java.awt.image.ColorModel; 67 import java.awt.image.DataBuffer; 68 import java.awt.image.DataBufferInt; 69 import java.awt.image.ImageObserver; 70 import java.awt.image.ImageProducer; 71 import java.awt.image.MultiResolutionImage; 72 import java.awt.image.Raster; 73 import java.awt.peer.FramePeer; 74 import java.awt.peer.KeyboardFocusManagerPeer; 75 import java.awt.peer.SystemTrayPeer; 76 import java.awt.peer.TrayIconPeer; 77 import java.io.File; 78 import java.io.IOException; 79 import java.io.InputStream; 80 import java.lang.reflect.InvocationTargetException; 81 import java.net.URL; 82 import java.security.AccessController; 83 import java.util.ArrayList; 84 import java.util.Collections; 85 import java.util.Iterator; 86 import java.util.Locale; 87 import java.util.Map; 88 import java.util.Vector; 89 import java.util.WeakHashMap; 90 import java.util.concurrent.TimeUnit; 91 import java.util.concurrent.atomic.AtomicBoolean; 92 import java.util.concurrent.locks.Condition; 93 import java.util.concurrent.locks.ReentrantLock; 94 95 import sun.awt.im.InputContext; 96 import sun.awt.image.ByteArrayImageSource; 97 import sun.awt.image.FileImageSource; 98 import sun.awt.image.ImageRepresentation; 99 import sun.awt.image.MultiResolutionToolkitImage; 100 import sun.awt.image.ToolkitImage; 101 import sun.awt.image.URLImageSource; 102 import sun.font.FontDesignMetrics; 103 import sun.net.util.URLUtil; 104 import sun.security.action.GetBooleanAction; 105 import sun.security.action.GetPropertyAction; 106 import sun.util.logging.PlatformLogger; 107 108 import static java.awt.RenderingHints.KEY_TEXT_ANTIALIASING; 109 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_GASP; 110 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HBGR; 111 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB; 112 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR; 113 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB; 114 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_ON; 115 116 public abstract class SunToolkit extends Toolkit 117 implements ComponentFactory, InputMethodSupport, KeyboardFocusManagerPeerProvider { 118 119 // 8014718: logging has been removed from SunToolkit 120 121 /* Load debug settings for native code */ 122 static { 123 if (AccessController.doPrivileged(new GetBooleanAction("sun.awt.nativedebug"))) { DebugSettings.init()124 DebugSettings.init(); 125 } 126 touchKeyboardAutoShowIsEnabled = Boolean.valueOf( 127 GetPropertyAction.privilegedGetProperty( 128 "awt.touchKeyboardAutoShowIsEnabled", "true")); 129 }; 130 131 /** 132 * Special mask for the UngrabEvent events, in addition to the 133 * public masks defined in AWTEvent. Should be used as the mask 134 * value for Toolkit.addAWTEventListener. 135 */ 136 public static final int GRAB_EVENT_MASK = 0x80000000; 137 138 /* The key to put()/get() the PostEventQueue into/from the AppContext. 139 */ 140 private static final String POST_EVENT_QUEUE_KEY = "PostEventQueue"; 141 142 /** 143 * Number of buttons. 144 * By default it's taken from the system. If system value does not 145 * fit into int type range, use our own MAX_BUTTONS_SUPPORT value. 146 */ 147 protected static int numberOfButtons = 0; 148 149 150 /* XFree standard mention 24 buttons as maximum: 151 * http://www.xfree86.org/current/mouse.4.html 152 * We workaround systems supporting more than 24 buttons. 153 * Otherwise, we have to use long type values as masks 154 * which leads to API change. 155 * InputEvent.BUTTON_DOWN_MASK may contain only 21 masks due to 156 * the 4-bytes limit for the int type. (CR 6799099) 157 * One more bit is reserved for FIRST_HIGH_BIT. 158 */ 159 public static final int MAX_BUTTONS_SUPPORTED = 20; 160 161 /** 162 * Creates and initializes EventQueue instance for the specified 163 * AppContext. 164 * Note that event queue must be created from createNewAppContext() 165 * only in order to ensure that EventQueue constructor obtains 166 * the correct AppContext. 167 * @param appContext AppContext to associate with the event queue 168 */ initEQ(AppContext appContext)169 private static void initEQ(AppContext appContext) { 170 EventQueue eventQueue = new EventQueue(); 171 appContext.put(AppContext.EVENT_QUEUE_KEY, eventQueue); 172 173 PostEventQueue postEventQueue = new PostEventQueue(eventQueue); 174 appContext.put(POST_EVENT_QUEUE_KEY, postEventQueue); 175 } 176 SunToolkit()177 public SunToolkit() { 178 } 179 useBufferPerWindow()180 public boolean useBufferPerWindow() { 181 return false; 182 } 183 createLightweightFrame(LightweightFrame target)184 public abstract FramePeer createLightweightFrame(LightweightFrame target) 185 throws HeadlessException; 186 createTrayIcon(TrayIcon target)187 public abstract TrayIconPeer createTrayIcon(TrayIcon target) 188 throws HeadlessException, AWTException; 189 createSystemTray(SystemTray target)190 public abstract SystemTrayPeer createSystemTray(SystemTray target); 191 isTraySupported()192 public abstract boolean isTraySupported(); 193 194 @Override getKeyboardFocusManagerPeer()195 public abstract KeyboardFocusManagerPeer getKeyboardFocusManagerPeer() 196 throws HeadlessException; 197 198 /** 199 * The AWT lock is typically only used on Unix platforms to synchronize 200 * access to Xlib, OpenGL, etc. However, these methods are implemented 201 * in SunToolkit so that they can be called from shared code (e.g. 202 * from the OGL pipeline) or from the X11 pipeline regardless of whether 203 * XToolkit or MToolkit is currently in use. There are native macros 204 * (such as AWT_LOCK) defined in awt.h, so if the implementation of these 205 * methods is changed, make sure it is compatible with the native macros. 206 * 207 * Note: The following methods (awtLock(), awtUnlock(), etc) should be 208 * used in place of: 209 * synchronized (getAWTLock()) { 210 * ... 211 * } 212 * 213 * By factoring these methods out specially, we are able to change the 214 * implementation of these methods (e.g. use more advanced locking 215 * mechanisms) without impacting calling code. 216 * 217 * Sample usage: 218 * private void doStuffWithXlib() { 219 * assert !SunToolkit.isAWTLockHeldByCurrentThread(); 220 * SunToolkit.awtLock(); 221 * try { 222 * ... 223 * XlibWrapper.XDoStuff(); 224 * } finally { 225 * SunToolkit.awtUnlock(); 226 * } 227 * } 228 */ 229 230 private static final ReentrantLock AWT_LOCK = new ReentrantLock(); 231 private static final Condition AWT_LOCK_COND = AWT_LOCK.newCondition(); 232 awtLock()233 public static final void awtLock() { 234 AWT_LOCK.lock(); 235 } 236 awtTryLock()237 public static final boolean awtTryLock() { 238 return AWT_LOCK.tryLock(); 239 } 240 awtUnlock()241 public static final void awtUnlock() { 242 AWT_LOCK.unlock(); 243 } 244 awtLockWait()245 public static final void awtLockWait() 246 throws InterruptedException 247 { 248 AWT_LOCK_COND.await(); 249 } 250 awtLockWait(long timeout)251 public static final void awtLockWait(long timeout) 252 throws InterruptedException 253 { 254 AWT_LOCK_COND.await(timeout, TimeUnit.MILLISECONDS); 255 } 256 awtLockNotify()257 public static final void awtLockNotify() { 258 AWT_LOCK_COND.signal(); 259 } 260 awtLockNotifyAll()261 public static final void awtLockNotifyAll() { 262 AWT_LOCK_COND.signalAll(); 263 } 264 isAWTLockHeldByCurrentThread()265 public static final boolean isAWTLockHeldByCurrentThread() { 266 return AWT_LOCK.isHeldByCurrentThread(); 267 } 268 269 /* 270 * Create a new AppContext, along with its EventQueue, for a 271 * new ThreadGroup. Browser code, for example, would use this 272 * method to create an AppContext & EventQueue for an Applet. 273 */ createNewAppContext()274 public static AppContext createNewAppContext() { 275 ThreadGroup threadGroup = Thread.currentThread().getThreadGroup(); 276 return createNewAppContext(threadGroup); 277 } 278 createNewAppContext(ThreadGroup threadGroup)279 static final AppContext createNewAppContext(ThreadGroup threadGroup) { 280 // Create appContext before initialization of EventQueue, so all 281 // the calls to AppContext.getAppContext() from EventQueue ctor 282 // return correct values 283 AppContext appContext = new AppContext(threadGroup); 284 initEQ(appContext); 285 286 return appContext; 287 } 288 wakeupEventQueue(EventQueue q, boolean isShutdown)289 static void wakeupEventQueue(EventQueue q, boolean isShutdown){ 290 AWTAccessor.getEventQueueAccessor().wakeup(q, isShutdown); 291 } 292 293 /* 294 * Fetch the peer associated with the given target (as specified 295 * in the peer creation method). This can be used to determine 296 * things like what the parent peer is. If the target is null 297 * or the target can't be found (either because the a peer was 298 * never created for it or the peer was disposed), a null will 299 * be returned. 300 */ targetToPeer(Object target)301 protected static Object targetToPeer(Object target) { 302 if (target != null && !GraphicsEnvironment.isHeadless()) { 303 return AWTAutoShutdown.getInstance().getPeer(target); 304 } 305 return null; 306 } 307 targetCreatedPeer(Object target, Object peer)308 protected static void targetCreatedPeer(Object target, Object peer) { 309 if (target != null && peer != null && 310 !GraphicsEnvironment.isHeadless()) 311 { 312 AWTAutoShutdown.getInstance().registerPeer(target, peer); 313 } 314 } 315 targetDisposedPeer(Object target, Object peer)316 protected static void targetDisposedPeer(Object target, Object peer) { 317 if (target != null && peer != null && 318 !GraphicsEnvironment.isHeadless()) 319 { 320 AWTAutoShutdown.getInstance().unregisterPeer(target, peer); 321 } 322 } 323 324 // Maps from non-Component/MenuComponent to AppContext. 325 // WeakHashMap<Component,AppContext> 326 private static final Map<Object, AppContext> appContextMap = 327 Collections.synchronizedMap(new WeakIdentityHashMap<Object, AppContext>()); 328 329 /** 330 * Sets the appContext field of target. If target is not a Component or 331 * MenuComponent, this returns false. 332 */ setAppContext(Object target, AppContext context)333 private static boolean setAppContext(Object target, 334 AppContext context) { 335 if (target instanceof Component) { 336 AWTAccessor.getComponentAccessor(). 337 setAppContext((Component)target, context); 338 } else if (target instanceof MenuComponent) { 339 AWTAccessor.getMenuComponentAccessor(). 340 setAppContext((MenuComponent)target, context); 341 } else { 342 return false; 343 } 344 return true; 345 } 346 347 /** 348 * Returns the appContext field for target. If target is not a 349 * Component or MenuComponent this returns null. 350 */ getAppContext(Object target)351 private static AppContext getAppContext(Object target) { 352 if (target instanceof Component) { 353 return AWTAccessor.getComponentAccessor(). 354 getAppContext((Component)target); 355 } else if (target instanceof MenuComponent) { 356 return AWTAccessor.getMenuComponentAccessor(). 357 getAppContext((MenuComponent)target); 358 } else { 359 return null; 360 } 361 } 362 363 /* 364 * Fetch the AppContext associated with the given target. 365 * This can be used to determine things like which EventQueue 366 * to use for posting events to a Component. If the target is 367 * null or the target can't be found, a null with be returned. 368 */ targetToAppContext(Object target)369 public static AppContext targetToAppContext(Object target) { 370 if (target == null) { 371 return null; 372 } 373 AppContext context = getAppContext(target); 374 if (context == null) { 375 // target is not a Component/MenuComponent, try the 376 // appContextMap. 377 context = appContextMap.get(target); 378 } 379 return context; 380 } 381 382 /** 383 * Sets the synchronous status of focus requests on lightweight 384 * components in the specified window to the specified value. 385 * If the boolean parameter is {@code true} then the focus 386 * requests on lightweight components will be performed 387 * synchronously, if it is {@code false}, then asynchronously. 388 * By default, all windows have their lightweight request status 389 * set to asynchronous. 390 * <p> 391 * The application can only set the status of lightweight focus 392 * requests to synchronous for any of its windows if it doesn't 393 * perform focus transfers between different heavyweight containers. 394 * In this case the observable focus behaviour is the same as with 395 * asynchronous status. 396 * <p> 397 * If the application performs focus transfer between different 398 * heavyweight containers and sets the lightweight focus request 399 * status to synchronous for any of its windows, then further focus 400 * behaviour is unspecified. 401 * <p> 402 * @param changed the window for which the lightweight focus request 403 * status should be set 404 * @param status the value of lightweight focus request status 405 */ 406 setLWRequestStatus(Window changed,boolean status)407 public static void setLWRequestStatus(Window changed,boolean status){ 408 AWTAccessor.getWindowAccessor().setLWRequestStatus(changed, status); 409 }; 410 checkAndSetPolicy(Container cont)411 public static void checkAndSetPolicy(Container cont) { 412 FocusTraversalPolicy defaultPolicy = KeyboardFocusManager. 413 getCurrentKeyboardFocusManager(). 414 getDefaultFocusTraversalPolicy(); 415 416 cont.setFocusTraversalPolicy(defaultPolicy); 417 } 418 419 /* 420 * Insert a mapping from target to AppContext, for later retrieval 421 * via targetToAppContext() above. 422 */ insertTargetMapping(Object target, AppContext appContext)423 public static void insertTargetMapping(Object target, AppContext appContext) { 424 if (!setAppContext(target, appContext)) { 425 // Target is not a Component/MenuComponent, use the private Map 426 // instead. 427 appContextMap.put(target, appContext); 428 } 429 } 430 431 /* 432 * Post an AWTEvent to the Java EventQueue, using the PostEventQueue 433 * to avoid possibly calling client code (EventQueueSubclass.postEvent()) 434 * on the toolkit (AWT-Windows/AWT-Motif) thread. This function should 435 * not be called under another lock since it locks the EventQueue. 436 * See bugids 4632918, 4526597. 437 */ postEvent(AppContext appContext, AWTEvent event)438 public static void postEvent(AppContext appContext, AWTEvent event) { 439 if (event == null) { 440 throw new NullPointerException(); 441 } 442 443 AWTAccessor.SequencedEventAccessor sea = AWTAccessor.getSequencedEventAccessor(); 444 if (sea != null && sea.isSequencedEvent(event)) { 445 AWTEvent nested = sea.getNested(event); 446 if (nested.getID() == WindowEvent.WINDOW_LOST_FOCUS && 447 nested instanceof TimedWindowEvent) 448 { 449 TimedWindowEvent twe = (TimedWindowEvent)nested; 450 ((SunToolkit)Toolkit.getDefaultToolkit()). 451 setWindowDeactivationTime((Window)twe.getSource(), twe.getWhen()); 452 } 453 } 454 455 // All events posted via this method are system-generated. 456 // Placing the following call here reduces considerably the 457 // number of places throughout the toolkit that would 458 // otherwise have to be modified to precisely identify 459 // system-generated events. 460 setSystemGenerated(event); 461 AppContext eventContext = targetToAppContext(event.getSource()); 462 if (eventContext != null && !eventContext.equals(appContext)) { 463 throw new RuntimeException("Event posted on wrong app context : " + event); 464 } 465 PostEventQueue postEventQueue = 466 (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); 467 if (postEventQueue != null) { 468 postEventQueue.postEvent(event); 469 } 470 } 471 472 /* 473 * Post AWTEvent of high priority. 474 */ postPriorityEvent(final AWTEvent e)475 public static void postPriorityEvent(final AWTEvent e) { 476 PeerEvent pe = new PeerEvent(Toolkit.getDefaultToolkit(), new Runnable() { 477 @Override 478 public void run() { 479 AWTAccessor.getAWTEventAccessor().setPosted(e); 480 ((Component)e.getSource()).dispatchEvent(e); 481 } 482 }, PeerEvent.ULTIMATE_PRIORITY_EVENT); 483 postEvent(targetToAppContext(e.getSource()), pe); 484 } 485 486 /* 487 * Flush any pending events which haven't been posted to the AWT 488 * EventQueue yet. 489 */ flushPendingEvents()490 public static void flushPendingEvents() { 491 AppContext appContext = AppContext.getAppContext(); 492 flushPendingEvents(appContext); 493 } 494 495 /* 496 * Flush the PostEventQueue for the right AppContext. 497 * The default flushPendingEvents only flushes the thread-local context, 498 * which is not always correct, c.f. 3746956 499 */ flushPendingEvents(AppContext appContext)500 public static void flushPendingEvents(AppContext appContext) { 501 PostEventQueue postEventQueue = 502 (PostEventQueue)appContext.get(POST_EVENT_QUEUE_KEY); 503 if (postEventQueue != null) { 504 postEventQueue.flush(); 505 } 506 } 507 508 /* 509 * Execute a chunk of code on the Java event handler thread for the 510 * given target. Does not wait for the execution to occur before 511 * returning to the caller. 512 */ executeOnEventHandlerThread(Object target, Runnable runnable)513 public static void executeOnEventHandlerThread(Object target, 514 Runnable runnable) { 515 executeOnEventHandlerThread(new PeerEvent(target, runnable, PeerEvent.PRIORITY_EVENT)); 516 } 517 518 /* 519 * Fixed 5064013: the InvocationEvent time should be equals 520 * the time of the ActionEvent 521 */ 522 @SuppressWarnings("serial") executeOnEventHandlerThread(Object target, Runnable runnable, final long when)523 public static void executeOnEventHandlerThread(Object target, 524 Runnable runnable, 525 final long when) { 526 executeOnEventHandlerThread( 527 new PeerEvent(target, runnable, PeerEvent.PRIORITY_EVENT) { 528 @Override 529 public long getWhen() { 530 return when; 531 } 532 }); 533 } 534 535 /* 536 * Execute a chunk of code on the Java event handler thread for the 537 * given target. Does not wait for the execution to occur before 538 * returning to the caller. 539 */ executeOnEventHandlerThread(PeerEvent peerEvent)540 public static void executeOnEventHandlerThread(PeerEvent peerEvent) { 541 postEvent(targetToAppContext(peerEvent.getSource()), peerEvent); 542 } 543 544 /* 545 * Execute a chunk of code on the Java event handler thread. The 546 * method takes into account provided AppContext and sets 547 * {@code SunToolkit.getDefaultToolkit()} as a target of the 548 * event. See 6451487 for detailes. 549 * Does not wait for the execution to occur before returning to 550 * the caller. 551 */ invokeLaterOnAppContext( AppContext appContext, Runnable dispatcher)552 public static void invokeLaterOnAppContext( 553 AppContext appContext, Runnable dispatcher) 554 { 555 postEvent(appContext, 556 new PeerEvent(Toolkit.getDefaultToolkit(), dispatcher, 557 PeerEvent.PRIORITY_EVENT)); 558 } 559 560 /* 561 * Execute a chunk of code on the Java event handler thread for the 562 * given target. Waits for the execution to occur before returning 563 * to the caller. 564 */ executeOnEDTAndWait(Object target, Runnable runnable)565 public static void executeOnEDTAndWait(Object target, Runnable runnable) 566 throws InterruptedException, InvocationTargetException 567 { 568 if (EventQueue.isDispatchThread()) { 569 throw new Error("Cannot call executeOnEDTAndWait from any event dispatcher thread"); 570 } 571 572 class AWTInvocationLock {} 573 Object lock = new AWTInvocationLock(); 574 575 PeerEvent event = new PeerEvent(target, runnable, lock, true, PeerEvent.PRIORITY_EVENT); 576 577 synchronized (lock) { 578 executeOnEventHandlerThread(event); 579 while(!event.isDispatched()) { 580 lock.wait(); 581 } 582 } 583 584 Throwable eventThrowable = event.getThrowable(); 585 if (eventThrowable != null) { 586 throw new InvocationTargetException(eventThrowable); 587 } 588 } 589 590 /* 591 * Returns true if the calling thread is the event dispatch thread 592 * contained within AppContext which associated with the given target. 593 * Use this call to ensure that a given task is being executed 594 * (or not being) on the event dispatch thread for the given target. 595 */ isDispatchThreadForAppContext(Object target)596 public static boolean isDispatchThreadForAppContext(Object target) { 597 AppContext appContext = targetToAppContext(target); 598 EventQueue eq = (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY); 599 600 AWTAccessor.EventQueueAccessor accessor = AWTAccessor.getEventQueueAccessor(); 601 return accessor.isDispatchThreadImpl(eq); 602 } 603 604 @Override getScreenSize()605 public Dimension getScreenSize() { 606 return GraphicsEnvironment.getLocalGraphicsEnvironment() 607 .getDefaultScreenDevice().getDefaultConfiguration() 608 .getBounds().getSize(); 609 } 610 611 @Override getColorModel()612 public ColorModel getColorModel() throws HeadlessException { 613 return GraphicsEnvironment.getLocalGraphicsEnvironment() 614 .getDefaultScreenDevice().getDefaultConfiguration() 615 .getColorModel(); 616 } 617 618 @Override 619 @SuppressWarnings("deprecation") getFontMetrics(Font font)620 public FontMetrics getFontMetrics(Font font) { 621 return FontDesignMetrics.getMetrics(font); 622 } 623 624 @Override 625 @SuppressWarnings("deprecation") getFontList()626 public String[] getFontList() { 627 String[] hardwiredFontList = { 628 Font.DIALOG, Font.SANS_SERIF, Font.SERIF, Font.MONOSPACED, 629 Font.DIALOG_INPUT 630 631 // -- Obsolete font names from 1.0.2. It was decided that 632 // -- getFontList should not return these old names: 633 // "Helvetica", "TimesRoman", "Courier", "ZapfDingbats" 634 }; 635 return hardwiredFontList; 636 } 637 638 /** 639 * Disables erasing of background on the canvas before painting if 640 * this is supported by the current toolkit. It is recommended to 641 * call this method early, before the Canvas becomes displayable, 642 * because some Toolkit implementations do not support changing 643 * this property once the Canvas becomes displayable. 644 */ disableBackgroundErase(Canvas canvas)645 public void disableBackgroundErase(Canvas canvas) { 646 disableBackgroundEraseImpl(canvas); 647 } 648 649 /** 650 * Disables the native erasing of the background on the given 651 * component before painting if this is supported by the current 652 * toolkit. This only has an effect for certain components such as 653 * Canvas, Panel and Window. It is recommended to call this method 654 * early, before the Component becomes displayable, because some 655 * Toolkit implementations do not support changing this property 656 * once the Component becomes displayable. 657 */ disableBackgroundErase(Component component)658 public void disableBackgroundErase(Component component) { 659 disableBackgroundEraseImpl(component); 660 } 661 disableBackgroundEraseImpl(Component component)662 private void disableBackgroundEraseImpl(Component component) { 663 AWTAccessor.getComponentAccessor().setBackgroundEraseDisabled(component, true); 664 } 665 666 /** 667 * Returns the value of "sun.awt.noerasebackground" property. Default 668 * value is {@code false}. 669 */ getSunAwtNoerasebackground()670 public static boolean getSunAwtNoerasebackground() { 671 return AccessController.doPrivileged(new GetBooleanAction("sun.awt.noerasebackground")); 672 } 673 674 /** 675 * Returns the value of "sun.awt.erasebackgroundonresize" property. Default 676 * value is {@code false}. 677 */ getSunAwtErasebackgroundonresize()678 public static boolean getSunAwtErasebackgroundonresize() { 679 return AccessController.doPrivileged(new GetBooleanAction("sun.awt.erasebackgroundonresize")); 680 } 681 682 683 @SuppressWarnings("deprecation") 684 static final SoftCache fileImgCache = new SoftCache(); 685 686 @SuppressWarnings("deprecation") 687 static final SoftCache urlImgCache = new SoftCache(); 688 getImageFromHash(Toolkit tk, URL url)689 static Image getImageFromHash(Toolkit tk, URL url) { 690 checkPermissions(url); 691 synchronized (urlImgCache) { 692 String key = url.toString(); 693 Image img = (Image)urlImgCache.get(key); 694 if (img == null) { 695 try { 696 img = tk.createImage(new URLImageSource(url)); 697 urlImgCache.put(key, img); 698 } catch (Exception e) { 699 } 700 } 701 return img; 702 } 703 } 704 getImageFromHash(Toolkit tk, String filename)705 static Image getImageFromHash(Toolkit tk, 706 String filename) { 707 checkPermissions(filename); 708 synchronized (fileImgCache) { 709 Image img = (Image)fileImgCache.get(filename); 710 if (img == null) { 711 try { 712 img = tk.createImage(new FileImageSource(filename)); 713 fileImgCache.put(filename, img); 714 } catch (Exception e) { 715 } 716 } 717 return img; 718 } 719 } 720 721 @Override getImage(String filename)722 public Image getImage(String filename) { 723 return getImageFromHash(this, filename); 724 } 725 726 @Override getImage(URL url)727 public Image getImage(URL url) { 728 return getImageFromHash(this, url); 729 } 730 getImageWithResolutionVariant(String fileName, String resolutionVariantName)731 protected Image getImageWithResolutionVariant(String fileName, 732 String resolutionVariantName) { 733 synchronized (fileImgCache) { 734 Image image = getImageFromHash(this, fileName); 735 if (image instanceof MultiResolutionImage) { 736 return image; 737 } 738 Image resolutionVariant = getImageFromHash(this, resolutionVariantName); 739 image = createImageWithResolutionVariant(image, resolutionVariant); 740 fileImgCache.put(fileName, image); 741 return image; 742 } 743 } 744 getImageWithResolutionVariant(URL url, URL resolutionVariantURL)745 protected Image getImageWithResolutionVariant(URL url, 746 URL resolutionVariantURL) { 747 synchronized (urlImgCache) { 748 Image image = getImageFromHash(this, url); 749 if (image instanceof MultiResolutionImage) { 750 return image; 751 } 752 Image resolutionVariant = getImageFromHash(this, resolutionVariantURL); 753 image = createImageWithResolutionVariant(image, resolutionVariant); 754 String key = url.toString(); 755 urlImgCache.put(key, image); 756 return image; 757 } 758 } 759 760 761 @Override createImage(String filename)762 public Image createImage(String filename) { 763 checkPermissions(filename); 764 return createImage(new FileImageSource(filename)); 765 } 766 767 @Override createImage(URL url)768 public Image createImage(URL url) { 769 checkPermissions(url); 770 return createImage(new URLImageSource(url)); 771 } 772 773 @Override createImage(byte[] data, int offset, int length)774 public Image createImage(byte[] data, int offset, int length) { 775 return createImage(new ByteArrayImageSource(data, offset, length)); 776 } 777 778 @Override createImage(ImageProducer producer)779 public Image createImage(ImageProducer producer) { 780 return new ToolkitImage(producer); 781 } 782 createImageWithResolutionVariant(Image image, Image resolutionVariant)783 public static Image createImageWithResolutionVariant(Image image, 784 Image resolutionVariant) { 785 return new MultiResolutionToolkitImage(image, resolutionVariant); 786 } 787 788 @Override checkImage(Image img, int w, int h, ImageObserver o)789 public int checkImage(Image img, int w, int h, ImageObserver o) { 790 if (!(img instanceof ToolkitImage)) { 791 return ImageObserver.ALLBITS; 792 } 793 794 ToolkitImage tkimg = (ToolkitImage)img; 795 int repbits; 796 if (w == 0 || h == 0) { 797 repbits = ImageObserver.ALLBITS; 798 } else { 799 repbits = tkimg.getImageRep().check(o); 800 } 801 return (tkimg.check(o) | repbits) & checkResolutionVariant(img, w, h, o); 802 } 803 804 @Override prepareImage(Image img, int w, int h, ImageObserver o)805 public boolean prepareImage(Image img, int w, int h, ImageObserver o) { 806 if (w == 0 || h == 0) { 807 return true; 808 } 809 810 // Must be a ToolkitImage 811 if (!(img instanceof ToolkitImage)) { 812 return true; 813 } 814 815 ToolkitImage tkimg = (ToolkitImage)img; 816 if (tkimg.hasError()) { 817 if (o != null) { 818 o.imageUpdate(img, ImageObserver.ERROR|ImageObserver.ABORT, 819 -1, -1, -1, -1); 820 } 821 return false; 822 } 823 ImageRepresentation ir = tkimg.getImageRep(); 824 return ir.prepare(o) & prepareResolutionVariant(img, w, h, o); 825 } 826 checkResolutionVariant(Image img, int w, int h, ImageObserver o)827 private int checkResolutionVariant(Image img, int w, int h, ImageObserver o) { 828 ToolkitImage rvImage = getResolutionVariant(img); 829 int rvw = getRVSize(w); 830 int rvh = getRVSize(h); 831 // Ignore the resolution variant in case of error 832 return (rvImage == null || rvImage.hasError()) ? 0xFFFF : 833 checkImage(rvImage, rvw, rvh, MultiResolutionToolkitImage. 834 getResolutionVariantObserver( 835 img, o, w, h, rvw, rvh, true)); 836 } 837 prepareResolutionVariant(Image img, int w, int h, ImageObserver o)838 private boolean prepareResolutionVariant(Image img, int w, int h, 839 ImageObserver o) { 840 841 ToolkitImage rvImage = getResolutionVariant(img); 842 int rvw = getRVSize(w); 843 int rvh = getRVSize(h); 844 // Ignore the resolution variant in case of error 845 return rvImage == null || rvImage.hasError() || prepareImage( 846 rvImage, rvw, rvh, 847 MultiResolutionToolkitImage.getResolutionVariantObserver( 848 img, o, w, h, rvw, rvh, true)); 849 } 850 getRVSize(int size)851 private static int getRVSize(int size){ 852 return size == -1 ? -1 : 2 * size; 853 } 854 getResolutionVariant(Image image)855 private static ToolkitImage getResolutionVariant(Image image) { 856 if (image instanceof MultiResolutionToolkitImage) { 857 Image resolutionVariant = ((MultiResolutionToolkitImage) image). 858 getResolutionVariant(); 859 if (resolutionVariant instanceof ToolkitImage) { 860 return (ToolkitImage) resolutionVariant; 861 } 862 } 863 return null; 864 } 865 imageCached(String fileName)866 protected static boolean imageCached(String fileName) { 867 return fileImgCache.containsKey(fileName); 868 } 869 imageCached(URL url)870 protected static boolean imageCached(URL url) { 871 String key = url.toString(); 872 return urlImgCache.containsKey(key); 873 } 874 imageExists(String filename)875 protected static boolean imageExists(String filename) { 876 if (filename != null) { 877 checkPermissions(filename); 878 return new File(filename).exists(); 879 } 880 return false; 881 } 882 883 @SuppressWarnings("try") imageExists(URL url)884 protected static boolean imageExists(URL url) { 885 if (url != null) { 886 checkPermissions(url); 887 try (InputStream is = url.openStream()) { 888 return true; 889 }catch(IOException e){ 890 return false; 891 } 892 } 893 return false; 894 } 895 checkPermissions(String filename)896 private static void checkPermissions(String filename) { 897 SecurityManager security = System.getSecurityManager(); 898 if (security != null) { 899 security.checkRead(filename); 900 } 901 } 902 checkPermissions(URL url)903 private static void checkPermissions(URL url) { 904 SecurityManager sm = System.getSecurityManager(); 905 if (sm != null) { 906 try { 907 java.security.Permission perm = 908 URLUtil.getConnectPermission(url); 909 if (perm != null) { 910 sm.checkPermission(perm); 911 } 912 } catch (java.io.IOException ioe) { 913 sm.checkConnect(url.getHost(), url.getPort()); 914 } 915 } 916 } 917 918 /** 919 * Scans {@code imageList} for best-looking image of specified dimensions. 920 * Image can be scaled and/or padded with transparency. 921 */ getScaledIconImage(java.util.List<Image> imageList, int width, int height)922 public static BufferedImage getScaledIconImage(java.util.List<Image> imageList, int width, int height) { 923 if (width == 0 || height == 0) { 924 return null; 925 } 926 java.util.List<Image> multiResAndnormalImages = new ArrayList<>(imageList.size()); 927 for (Image image : imageList) { 928 if ((image instanceof MultiResolutionImage)) { 929 Image im = ((MultiResolutionImage) image).getResolutionVariant(width, height); 930 multiResAndnormalImages.add(im); 931 } else { 932 multiResAndnormalImages.add(image); 933 } 934 } 935 Image bestImage = null; 936 int bestWidth = 0; 937 int bestHeight = 0; 938 double bestSimilarity = 3; //Impossibly high value 939 double bestScaleFactor = 0; 940 for (Iterator<Image> i = multiResAndnormalImages.iterator();i.hasNext();) { 941 //Iterate imageList looking for best matching image. 942 //'Similarity' measure is defined as good scale factor and small insets. 943 //best possible similarity is 0 (no scale, no insets). 944 //It's found while the experiments that good-looking result is achieved 945 //with scale factors x1, x3/4, x2/3, xN, x1/N. 946 Image im = i.next(); 947 if (im == null) { 948 continue; 949 } 950 if (im instanceof ToolkitImage) { 951 ImageRepresentation ir = ((ToolkitImage)im).getImageRep(); 952 ir.reconstruct(ImageObserver.ALLBITS); 953 } 954 int iw; 955 int ih; 956 try { 957 iw = im.getWidth(null); 958 ih = im.getHeight(null); 959 } catch (Exception e){ 960 continue; 961 } 962 if (iw > 0 && ih > 0) { 963 //Calc scale factor 964 double scaleFactor = Math.min((double)width / (double)iw, 965 (double)height / (double)ih); 966 //Calculate scaled image dimensions 967 //adjusting scale factor to nearest "good" value 968 int adjw = 0; 969 int adjh = 0; 970 double scaleMeasure = 1; //0 - best (no) scale, 1 - impossibly bad 971 if (scaleFactor >= 2) { 972 //Need to enlarge image more than twice 973 //Round down scale factor to multiply by integer value 974 scaleFactor = Math.floor(scaleFactor); 975 adjw = iw * (int)scaleFactor; 976 adjh = ih * (int)scaleFactor; 977 scaleMeasure = 1.0 - 0.5 / scaleFactor; 978 } else if (scaleFactor >= 1) { 979 //Don't scale 980 scaleFactor = 1.0; 981 adjw = iw; 982 adjh = ih; 983 scaleMeasure = 0; 984 } else if (scaleFactor >= 0.75) { 985 //Multiply by 3/4 986 scaleFactor = 0.75; 987 adjw = iw * 3 / 4; 988 adjh = ih * 3 / 4; 989 scaleMeasure = 0.3; 990 } else if (scaleFactor >= 0.6666) { 991 //Multiply by 2/3 992 scaleFactor = 0.6666; 993 adjw = iw * 2 / 3; 994 adjh = ih * 2 / 3; 995 scaleMeasure = 0.33; 996 } else { 997 //Multiply size by 1/scaleDivider 998 //where scaleDivider is minimum possible integer 999 //larger than 1/scaleFactor 1000 double scaleDivider = Math.ceil(1.0 / scaleFactor); 1001 scaleFactor = 1.0 / scaleDivider; 1002 adjw = (int)Math.round((double)iw / scaleDivider); 1003 adjh = (int)Math.round((double)ih / scaleDivider); 1004 scaleMeasure = 1.0 - 1.0 / scaleDivider; 1005 } 1006 double similarity = ((double)width - (double)adjw) / (double)width + 1007 ((double)height - (double)adjh) / (double)height + //Large padding is bad 1008 scaleMeasure; //Large rescale is bad 1009 if (similarity < bestSimilarity) { 1010 bestSimilarity = similarity; 1011 bestScaleFactor = scaleFactor; 1012 bestImage = im; 1013 bestWidth = adjw; 1014 bestHeight = adjh; 1015 } 1016 if (similarity == 0) break; 1017 } 1018 } 1019 if (bestImage == null) { 1020 //No images were found, possibly all are broken 1021 return null; 1022 } 1023 BufferedImage bimage = 1024 new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); 1025 Graphics2D g = bimage.createGraphics(); 1026 g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 1027 RenderingHints.VALUE_INTERPOLATION_BILINEAR); 1028 try { 1029 int x = (width - bestWidth) / 2; 1030 int y = (height - bestHeight) / 2; 1031 g.drawImage(bestImage, x, y, bestWidth, bestHeight, null); 1032 } finally { 1033 g.dispose(); 1034 } 1035 return bimage; 1036 } 1037 getScaledIconData(java.util.List<Image> imageList, int width, int height)1038 public static DataBufferInt getScaledIconData(java.util.List<Image> imageList, int width, int height) { 1039 BufferedImage bimage = getScaledIconImage(imageList, width, height); 1040 if (bimage == null) { 1041 return null; 1042 } 1043 Raster raster = bimage.getRaster(); 1044 DataBuffer buffer = raster.getDataBuffer(); 1045 return (DataBufferInt)buffer; 1046 } 1047 1048 @Override getSystemEventQueueImpl()1049 protected EventQueue getSystemEventQueueImpl() { 1050 return getSystemEventQueueImplPP(); 1051 } 1052 1053 // Package private implementation getSystemEventQueueImplPP()1054 static EventQueue getSystemEventQueueImplPP() { 1055 return getSystemEventQueueImplPP(AppContext.getAppContext()); 1056 } 1057 getSystemEventQueueImplPP(AppContext appContext)1058 public static EventQueue getSystemEventQueueImplPP(AppContext appContext) { 1059 EventQueue theEventQueue = 1060 (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY); 1061 return theEventQueue; 1062 } 1063 1064 /** 1065 * Give native peers the ability to query the native container 1066 * given a native component (eg the direct parent may be lightweight). 1067 */ getNativeContainer(Component c)1068 public static Container getNativeContainer(Component c) { 1069 return Toolkit.getNativeContainer(c); 1070 } 1071 1072 /** 1073 * Gives native peers the ability to query the closest HW component. 1074 * If the given component is heavyweight, then it returns this. Otherwise, 1075 * it goes one level up in the hierarchy and tests next component. 1076 */ getHeavyweightComponent(Component c)1077 public static Component getHeavyweightComponent(Component c) { 1078 while (c != null && AWTAccessor.getComponentAccessor().isLightweight(c)) { 1079 c = AWTAccessor.getComponentAccessor().getParent(c); 1080 } 1081 return c; 1082 } 1083 1084 /** 1085 * Returns key modifiers used by Swing to set up a focus accelerator key stroke. 1086 */ 1087 @SuppressWarnings("deprecation") getFocusAcceleratorKeyMask()1088 public int getFocusAcceleratorKeyMask() { 1089 return InputEvent.ALT_MASK; 1090 } 1091 1092 /** 1093 * Tests whether specified key modifiers mask can be used to enter a printable 1094 * character. This is a default implementation of this method, which reflects 1095 * the way things work on Windows: here, pressing ctrl + alt allows user to enter 1096 * characters from the extended character set (like euro sign or math symbols) 1097 */ 1098 @SuppressWarnings("deprecation") isPrintableCharacterModifiersMask(int mods)1099 public boolean isPrintableCharacterModifiersMask(int mods) { 1100 return ((mods & InputEvent.ALT_MASK) == (mods & InputEvent.CTRL_MASK)); 1101 } 1102 1103 /** 1104 * Returns whether popup is allowed to be shown above the task bar. 1105 * This is a default implementation of this method, which checks 1106 * corresponding security permission. 1107 */ canPopupOverlapTaskBar()1108 public boolean canPopupOverlapTaskBar() { 1109 boolean result = true; 1110 try { 1111 SecurityManager sm = System.getSecurityManager(); 1112 if (sm != null) { 1113 sm.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION); 1114 } 1115 } catch (SecurityException se) { 1116 // There is no permission to show popups over the task bar 1117 result = false; 1118 } 1119 return result; 1120 } 1121 1122 /** 1123 * Returns a new input method window, with behavior as specified in 1124 * {@link java.awt.im.spi.InputMethodContext#createInputMethodWindow}. 1125 * If the inputContext is not null, the window should return it from its 1126 * getInputContext() method. The window needs to implement 1127 * sun.awt.im.InputMethodWindow. 1128 * <p> 1129 * SunToolkit subclasses can override this method to return better input 1130 * method windows. 1131 */ 1132 @Override createInputMethodWindow(String title, InputContext context)1133 public Window createInputMethodWindow(String title, InputContext context) { 1134 return new sun.awt.im.SimpleInputMethodWindow(title, context); 1135 } 1136 1137 /** 1138 * Returns whether enableInputMethods should be set to true for peered 1139 * TextComponent instances on this platform. False by default. 1140 */ 1141 @Override enableInputMethodsForTextComponent()1142 public boolean enableInputMethodsForTextComponent() { 1143 return false; 1144 } 1145 1146 private static Locale startupLocale = null; 1147 1148 /** 1149 * Returns the locale in which the runtime was started. 1150 */ getStartupLocale()1151 public static Locale getStartupLocale() { 1152 if (startupLocale == null) { 1153 String language, region, country, variant; 1154 language = AccessController.doPrivileged( 1155 new GetPropertyAction("user.language", "en")); 1156 // for compatibility, check for old user.region property 1157 region = AccessController.doPrivileged( 1158 new GetPropertyAction("user.region")); 1159 if (region != null) { 1160 // region can be of form country, country_variant, or _variant 1161 int i = region.indexOf('_'); 1162 if (i >= 0) { 1163 country = region.substring(0, i); 1164 variant = region.substring(i + 1); 1165 } else { 1166 country = region; 1167 variant = ""; 1168 } 1169 } else { 1170 country = AccessController.doPrivileged( 1171 new GetPropertyAction("user.country", "")); 1172 variant = AccessController.doPrivileged( 1173 new GetPropertyAction("user.variant", "")); 1174 } 1175 startupLocale = new Locale(language, country, variant); 1176 } 1177 return startupLocale; 1178 } 1179 1180 /** 1181 * Returns the default keyboard locale of the underlying operating system 1182 */ 1183 @Override getDefaultKeyboardLocale()1184 public Locale getDefaultKeyboardLocale() { 1185 return getStartupLocale(); 1186 } 1187 1188 /** 1189 * Returns whether default toolkit needs the support of the xembed 1190 * from embedding host(if any). 1191 * @return {@code true}, if XEmbed is needed, {@code false} otherwise 1192 */ needsXEmbed()1193 public static boolean needsXEmbed() { 1194 String noxembed = AccessController. 1195 doPrivileged(new GetPropertyAction("sun.awt.noxembed", "false")); 1196 if ("true".equals(noxembed)) { 1197 return false; 1198 } 1199 1200 Toolkit tk = Toolkit.getDefaultToolkit(); 1201 if (tk instanceof SunToolkit) { 1202 // SunToolkit descendants should override this method to specify 1203 // concrete behavior 1204 return ((SunToolkit)tk).needsXEmbedImpl(); 1205 } else { 1206 // Non-SunToolkit doubtly might support XEmbed 1207 return false; 1208 } 1209 } 1210 1211 /** 1212 * Returns whether this toolkit needs the support of the xembed 1213 * from embedding host(if any). 1214 * @return {@code true}, if XEmbed is needed, {@code false} otherwise 1215 */ needsXEmbedImpl()1216 protected boolean needsXEmbedImpl() { 1217 return false; 1218 } 1219 1220 private static Dialog.ModalExclusionType DEFAULT_MODAL_EXCLUSION_TYPE = null; 1221 1222 /** 1223 * Returns whether the XEmbed server feature is requested by 1224 * developer. If true, Toolkit should return an 1225 * XEmbed-server-enabled CanvasPeer instead of the ordinary CanvasPeer. 1226 */ isXEmbedServerRequested()1227 protected final boolean isXEmbedServerRequested() { 1228 return AccessController.doPrivileged(new GetBooleanAction("sun.awt.xembedserver")); 1229 } 1230 1231 /** 1232 * Returns whether the modal exclusion API is supported by the current toolkit. 1233 * When it isn't supported, calling {@code setModalExcluded} has no 1234 * effect, and {@code isModalExcluded} returns false for all windows. 1235 * 1236 * @return true if modal exclusion is supported by the toolkit, false otherwise 1237 * 1238 * @see sun.awt.SunToolkit#setModalExcluded(java.awt.Window) 1239 * @see sun.awt.SunToolkit#isModalExcluded(java.awt.Window) 1240 * 1241 * @since 1.5 1242 */ isModalExcludedSupported()1243 public static boolean isModalExcludedSupported() 1244 { 1245 Toolkit tk = Toolkit.getDefaultToolkit(); 1246 return tk.isModalExclusionTypeSupported(DEFAULT_MODAL_EXCLUSION_TYPE); 1247 } 1248 /* 1249 * Default implementation for isModalExcludedSupportedImpl(), returns false. 1250 * 1251 * @see sun.awt.windows.WToolkit#isModalExcludeSupportedImpl 1252 * @see sun.awt.X11.XToolkit#isModalExcludeSupportedImpl 1253 * 1254 * @since 1.5 1255 */ isModalExcludedSupportedImpl()1256 protected boolean isModalExcludedSupportedImpl() 1257 { 1258 return false; 1259 } 1260 1261 /* 1262 * Sets this window to be excluded from being modally blocked. When the 1263 * toolkit supports modal exclusion and this method is called, input 1264 * events, focus transfer and z-order will continue to work for the 1265 * window, it's owned windows and child components, even in the 1266 * presence of a modal dialog. 1267 * For details on which {@code Window}s are normally blocked 1268 * by modal dialog, see {@link java.awt.Dialog}. 1269 * Invoking this method when the modal exclusion API is not supported by 1270 * the current toolkit has no effect. 1271 * @param window Window to be marked as not modally blocked 1272 * @see java.awt.Dialog 1273 * @see java.awt.Dialog#setModal(boolean) 1274 * @see sun.awt.SunToolkit#isModalExcludedSupported 1275 * @see sun.awt.SunToolkit#isModalExcluded(java.awt.Window) 1276 */ setModalExcluded(Window window)1277 public static void setModalExcluded(Window window) 1278 { 1279 if (DEFAULT_MODAL_EXCLUSION_TYPE == null) { 1280 DEFAULT_MODAL_EXCLUSION_TYPE = Dialog.ModalExclusionType.APPLICATION_EXCLUDE; 1281 } 1282 window.setModalExclusionType(DEFAULT_MODAL_EXCLUSION_TYPE); 1283 } 1284 1285 /* 1286 * Returns whether the specified window is blocked by modal dialogs. 1287 * If the modal exclusion API isn't supported by the current toolkit, 1288 * it returns false for all windows. 1289 * 1290 * @param window Window to test for modal exclusion 1291 * 1292 * @return true if the window is modal excluded, false otherwise. If 1293 * the modal exclusion isn't supported by the current Toolkit, false 1294 * is returned 1295 * 1296 * @see sun.awt.SunToolkit#isModalExcludedSupported 1297 * @see sun.awt.SunToolkit#setModalExcluded(java.awt.Window) 1298 * 1299 * @since 1.5 1300 */ isModalExcluded(Window window)1301 public static boolean isModalExcluded(Window window) 1302 { 1303 if (DEFAULT_MODAL_EXCLUSION_TYPE == null) { 1304 DEFAULT_MODAL_EXCLUSION_TYPE = Dialog.ModalExclusionType.APPLICATION_EXCLUDE; 1305 } 1306 return window.getModalExclusionType().compareTo(DEFAULT_MODAL_EXCLUSION_TYPE) >= 0; 1307 } 1308 1309 /** 1310 * Overridden in XToolkit and WToolkit 1311 */ 1312 @Override isModalityTypeSupported(Dialog.ModalityType modalityType)1313 public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) { 1314 return (modalityType == Dialog.ModalityType.MODELESS) || 1315 (modalityType == Dialog.ModalityType.APPLICATION_MODAL); 1316 } 1317 1318 /** 1319 * Overridden in XToolkit and WToolkit 1320 */ 1321 @Override isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType)1322 public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) { 1323 return (exclusionType == Dialog.ModalExclusionType.NO_EXCLUDE); 1324 } 1325 1326 /////////////////////////////////////////////////////////////////////////// 1327 // 1328 // The following is used by the Java Plug-in to coordinate dialog modality 1329 // between containing applications (browsers, ActiveX containers etc) and 1330 // the AWT. 1331 // 1332 /////////////////////////////////////////////////////////////////////////// 1333 1334 private ModalityListenerList modalityListeners = new ModalityListenerList(); 1335 addModalityListener(ModalityListener listener)1336 public void addModalityListener(ModalityListener listener) { 1337 modalityListeners.add(listener); 1338 } 1339 removeModalityListener(ModalityListener listener)1340 public void removeModalityListener(ModalityListener listener) { 1341 modalityListeners.remove(listener); 1342 } 1343 notifyModalityPushed(Dialog dialog)1344 public void notifyModalityPushed(Dialog dialog) { 1345 notifyModalityChange(ModalityEvent.MODALITY_PUSHED, dialog); 1346 } 1347 notifyModalityPopped(Dialog dialog)1348 public void notifyModalityPopped(Dialog dialog) { 1349 notifyModalityChange(ModalityEvent.MODALITY_POPPED, dialog); 1350 } 1351 notifyModalityChange(int id, Dialog source)1352 final void notifyModalityChange(int id, Dialog source) { 1353 ModalityEvent ev = new ModalityEvent(source, modalityListeners, id); 1354 ev.dispatch(); 1355 } 1356 1357 static class ModalityListenerList implements ModalityListener { 1358 1359 Vector<ModalityListener> listeners = new Vector<ModalityListener>(); 1360 add(ModalityListener listener)1361 void add(ModalityListener listener) { 1362 listeners.addElement(listener); 1363 } 1364 remove(ModalityListener listener)1365 void remove(ModalityListener listener) { 1366 listeners.removeElement(listener); 1367 } 1368 1369 @Override modalityPushed(ModalityEvent ev)1370 public void modalityPushed(ModalityEvent ev) { 1371 Iterator<ModalityListener> it = listeners.iterator(); 1372 while (it.hasNext()) { 1373 it.next().modalityPushed(ev); 1374 } 1375 } 1376 1377 @Override modalityPopped(ModalityEvent ev)1378 public void modalityPopped(ModalityEvent ev) { 1379 Iterator<ModalityListener> it = listeners.iterator(); 1380 while (it.hasNext()) { 1381 it.next().modalityPopped(ev); 1382 } 1383 } 1384 } // end of class ModalityListenerList 1385 1386 /////////////////////////////////////////////////////////////////////////// 1387 // End Plug-in code 1388 /////////////////////////////////////////////////////////////////////////// 1389 isLightweightOrUnknown(Component comp)1390 public static boolean isLightweightOrUnknown(Component comp) { 1391 if (comp.isLightweight() 1392 || !(getDefaultToolkit() instanceof SunToolkit)) 1393 { 1394 return true; 1395 } 1396 return !(comp instanceof Button 1397 || comp instanceof Canvas 1398 || comp instanceof Checkbox 1399 || comp instanceof Choice 1400 || comp instanceof Label 1401 || comp instanceof java.awt.List 1402 || comp instanceof Panel 1403 || comp instanceof Scrollbar 1404 || comp instanceof ScrollPane 1405 || comp instanceof TextArea 1406 || comp instanceof TextField 1407 || comp instanceof Window); 1408 } 1409 1410 @SuppressWarnings("serial") 1411 public static class OperationTimedOut extends RuntimeException { OperationTimedOut(String msg)1412 public OperationTimedOut(String msg) { 1413 super(msg); 1414 } OperationTimedOut()1415 public OperationTimedOut() { 1416 } 1417 } 1418 1419 @SuppressWarnings("serial") 1420 public static class IllegalThreadException extends RuntimeException { IllegalThreadException(String msg)1421 public IllegalThreadException(String msg) { 1422 super(msg); 1423 } IllegalThreadException()1424 public IllegalThreadException() { 1425 } 1426 } 1427 1428 public static final int DEFAULT_WAIT_TIME = 10000; 1429 private static final int MAX_ITERS = 100; 1430 private static final int MIN_ITERS = 1; 1431 private static final int MINIMAL_DELAY = 5; 1432 1433 /** 1434 * Parameterless version of realsync which uses default timout (see DEFAUL_WAIT_TIME). 1435 */ realSync()1436 public void realSync() throws OperationTimedOut { 1437 realSync(DEFAULT_WAIT_TIME); 1438 } 1439 1440 /** 1441 * Forces toolkit to synchronize with the native windowing 1442 * sub-system, flushing all pending work and waiting for all the 1443 * events to be processed. This method guarantees that after 1444 * return no additional Java events will be generated, unless 1445 * cause by user. Obviously, the method cannot be used on the 1446 * event dispatch thread (EDT). In case it nevertheless gets 1447 * invoked on this thread, the method throws the 1448 * IllegalThreadException runtime exception. 1449 * 1450 * <p> This method allows to write tests without explicit timeouts 1451 * or wait for some event. Example: 1452 * <pre>{@code 1453 * Frame f = ...; 1454 * f.setVisible(true); 1455 * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); 1456 * }</pre> 1457 * 1458 * <p> After realSync, {@code f} will be completely visible 1459 * on the screen, its getLocationOnScreen will be returning the 1460 * right result and it will be the focus owner. 1461 * 1462 * <p> Another example: 1463 * <pre>{@code 1464 * b.requestFocus(); 1465 * ((SunToolkit)Toolkit.getDefaultToolkit()).realSync(); 1466 * }</pre> 1467 * 1468 * <p> After realSync, {@code b} will be focus owner. 1469 * 1470 * <p> Notice that realSync isn't guaranteed to work if recurring 1471 * actions occur, such as if during processing of some event 1472 * another request which may generate some events occurs. By 1473 * default, sync tries to perform as much as {@value #MAX_ITERS} 1474 * cycles of event processing, allowing for roughly {@value 1475 * #MAX_ITERS} additional requests. 1476 * 1477 * <p> For example, requestFocus() generates native request, which 1478 * generates one or two Java focus events, which then generate a 1479 * serie of paint events, a serie of Java focus events, which then 1480 * generate a serie of paint events which then are processed - 1481 * three cycles, minimum. 1482 * 1483 * @param timeout the maximum time to wait in milliseconds, negative means "forever". 1484 */ realSync(final long timeout)1485 public void realSync(final long timeout) throws OperationTimedOut { 1486 if (EventQueue.isDispatchThread()) { 1487 throw new IllegalThreadException("The SunToolkit.realSync() method cannot be used on the event dispatch thread (EDT)."); 1488 } 1489 try { 1490 // We should wait unconditionally for the first event on EDT 1491 EventQueue.invokeAndWait(() -> {/*dummy implementation*/}); 1492 } catch (InterruptedException | InvocationTargetException ignored) { 1493 } 1494 int bigLoop = 0; 1495 long end = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()) + timeout; 1496 do { 1497 if (timeout(end) < 0) { 1498 return; 1499 } 1500 // Let's do sync first 1501 sync(); 1502 1503 // During the wait process, when we were processing incoming 1504 // events, we could have made some new request, which can 1505 // generate new events. Example: MapNotify/XSetInputFocus. 1506 // Therefore, we dispatch them as long as there is something 1507 // to dispatch. 1508 int iters = 0; 1509 while (iters < MIN_ITERS) { 1510 syncNativeQueue(timeout(end)); 1511 iters++; 1512 } 1513 while (syncNativeQueue(timeout(end)) && iters < MAX_ITERS) { 1514 iters++; 1515 } 1516 1517 // native requests were dispatched by X/Window Manager or Windows 1518 // Moreover, we processed them all on Toolkit thread 1519 // Now wait while EDT processes them. 1520 // 1521 // During processing of some events (focus, for example), 1522 // some other events could have been generated. So, after 1523 // waitForIdle, we may end up with full EventQueue 1524 iters = 0; 1525 while (iters < MIN_ITERS) { 1526 waitForIdle(timeout(end)); 1527 iters++; 1528 } 1529 while (waitForIdle(end) && iters < MAX_ITERS) { 1530 iters++; 1531 } 1532 1533 bigLoop++; 1534 // Again, for Java events, it was simple to check for new Java 1535 // events by checking event queue, but what if Java events 1536 // resulted in native requests? Therefor, check native events again. 1537 } while ((syncNativeQueue(timeout(end)) || waitForIdle(end)) 1538 && bigLoop < MAX_ITERS); 1539 } 1540 timeout(long end)1541 private long timeout(long end){ 1542 return end - TimeUnit.NANOSECONDS.toMillis(System.nanoTime()); 1543 } 1544 1545 /** 1546 * Platform toolkits need to implement this method to perform the 1547 * sync of the native queue. The method should wait until native 1548 * requests are processed, all native events are processed and 1549 * corresponding Java events are generated. Should return 1550 * {@code true} if some events were processed, 1551 * {@code false} otherwise. 1552 */ syncNativeQueue(long timeout)1553 protected abstract boolean syncNativeQueue(long timeout); 1554 1555 private final Object waitLock = new Object(); 1556 isEQEmpty()1557 private boolean isEQEmpty() { 1558 EventQueue queue = getSystemEventQueueImpl(); 1559 return AWTAccessor.getEventQueueAccessor().noEvents(queue); 1560 } 1561 1562 /** 1563 * Waits for the Java event queue to empty. Ensures that all 1564 * events are processed (including paint events), and that if 1565 * recursive events were generated, they are also processed. 1566 * Should return {@code true} if more processing is 1567 * necessary, {@code false} otherwise. 1568 */ 1569 @SuppressWarnings("serial") waitForIdle(final long end)1570 private final boolean waitForIdle(final long end) { 1571 flushPendingEvents(); 1572 final boolean queueWasEmpty; 1573 final AtomicBoolean queueEmpty = new AtomicBoolean(); 1574 final AtomicBoolean eventDispatched = new AtomicBoolean(); 1575 synchronized (waitLock) { 1576 queueWasEmpty = isEQEmpty(); 1577 postEvent(AppContext.getAppContext(), 1578 new PeerEvent(getSystemEventQueueImpl(), null, PeerEvent.LOW_PRIORITY_EVENT) { 1579 @Override 1580 public void dispatch() { 1581 // Here we block EDT. It could have some 1582 // events, it should have dispatched them by 1583 // now. So native requests could have been 1584 // generated. First, dispatch them. Then, 1585 // flush Java events again. 1586 int iters = 0; 1587 while (iters < MIN_ITERS) { 1588 syncNativeQueue(timeout(end)); 1589 iters++; 1590 } 1591 while (syncNativeQueue(timeout(end)) && iters < MAX_ITERS) { 1592 iters++; 1593 } 1594 flushPendingEvents(); 1595 1596 synchronized(waitLock) { 1597 queueEmpty.set(isEQEmpty()); 1598 eventDispatched.set(true); 1599 waitLock.notifyAll(); 1600 } 1601 } 1602 }); 1603 try { 1604 while (!eventDispatched.get() && timeout(end) > 0) { 1605 waitLock.wait(timeout(end)); 1606 } 1607 } catch (InterruptedException ie) { 1608 return false; 1609 } 1610 } 1611 1612 try { 1613 Thread.sleep(MINIMAL_DELAY); 1614 } catch (InterruptedException ie) { 1615 throw new RuntimeException("Interrupted"); 1616 } 1617 1618 flushPendingEvents(); 1619 1620 // Lock to force write-cache flush for queueEmpty. 1621 synchronized (waitLock) { 1622 return !(queueEmpty.get() && isEQEmpty() && queueWasEmpty); 1623 } 1624 } 1625 1626 /** 1627 * Grabs the mouse input for the given window. The window must be 1628 * visible. The window or its children do not receive any 1629 * additional mouse events besides those targeted to them. All 1630 * other events will be dispatched as before - to the respective 1631 * targets. This Window will receive UngrabEvent when automatic 1632 * ungrab is about to happen. The event can be listened to by 1633 * installing AWTEventListener with WINDOW_EVENT_MASK. See 1634 * UngrabEvent class for the list of conditions when ungrab is 1635 * about to happen. 1636 * @see UngrabEvent 1637 */ grab(Window w)1638 public abstract void grab(Window w); 1639 1640 /** 1641 * Forces ungrab. No event will be sent. 1642 */ ungrab(Window w)1643 public abstract void ungrab(Window w); 1644 showOrHideTouchKeyboard(Component comp, AWTEvent e)1645 public void showOrHideTouchKeyboard(Component comp, AWTEvent e) {} 1646 1647 private static boolean touchKeyboardAutoShowIsEnabled; 1648 isTouchKeyboardAutoShowEnabled()1649 public static boolean isTouchKeyboardAutoShowEnabled() { 1650 return touchKeyboardAutoShowIsEnabled; 1651 } 1652 1653 /** 1654 * Locates the splash screen library in a platform dependent way and closes 1655 * the splash screen. Should be invoked on first top-level frame display. 1656 * @see java.awt.SplashScreen 1657 * @since 1.6 1658 */ closeSplashScreen()1659 public static native void closeSplashScreen(); 1660 1661 /* The following methods and variables are to support retrieving 1662 * desktop text anti-aliasing settings 1663 */ 1664 1665 /* Need an instance method because setDesktopProperty(..) is protected. */ fireDesktopFontPropertyChanges()1666 private void fireDesktopFontPropertyChanges() { 1667 setDesktopProperty(SunToolkit.DESKTOPFONTHINTS, 1668 SunToolkit.getDesktopFontHints()); 1669 } 1670 1671 private static boolean checkedSystemAAFontSettings; 1672 private static boolean useSystemAAFontSettings; 1673 private static boolean lastExtraCondition = true; 1674 private static RenderingHints desktopFontHints; 1675 1676 /* Since Swing is the reason for this "extra condition" logic its 1677 * worth documenting it in some detail. 1678 * First, a goal is for Swing and applications to both retrieve and 1679 * use the same desktop property value so that there is complete 1680 * consistency between the settings used by JDK's Swing implementation 1681 * and 3rd party custom Swing components, custom L&Fs and any general 1682 * text rendering that wants to be consistent with these. 1683 * But by default on Solaris & Linux Swing will not use AA text over 1684 * remote X11 display (unless Xrender can be used which is TBD and may not 1685 * always be available anyway) as that is a noticeable performance hit. 1686 * So there needs to be a way to express that extra condition so that 1687 * it is seen by all clients of the desktop property API. 1688 * If this were the only condition it could be handled here as it would 1689 * be the same for any L&F and could reasonably be considered to be 1690 * a static behaviour of those systems. 1691 * But GTK currently has an additional test based on locale which is 1692 * not applied by Metal. So mixing GTK in a few locales with Metal 1693 * would mean the last one wins. 1694 * This could be stored per-app context which would work 1695 * for different applets, but wouldn't help for a single application 1696 * using GTK and some other L&F concurrently. 1697 * But it is expected this will be addressed within GTK and the font 1698 * system so is a temporary and somewhat unlikely harmless corner case. 1699 */ setAAFontSettingsCondition(boolean extraCondition)1700 public static void setAAFontSettingsCondition(boolean extraCondition) { 1701 if (extraCondition != lastExtraCondition) { 1702 lastExtraCondition = extraCondition; 1703 if (checkedSystemAAFontSettings) { 1704 /* Someone already asked for this info, under a different 1705 * condition. 1706 * We'll force re-evaluation instead of replicating the 1707 * logic, then notify any listeners of any change. 1708 */ 1709 checkedSystemAAFontSettings = false; 1710 Toolkit tk = Toolkit.getDefaultToolkit(); 1711 if (tk instanceof SunToolkit) { 1712 ((SunToolkit)tk).fireDesktopFontPropertyChanges(); 1713 } 1714 } 1715 } 1716 } 1717 1718 /* "false", "off", ""default" aren't explicitly tested, they 1719 * just fall through to produce a null return which all are equated to 1720 * "false". 1721 */ getDesktopAAHintsByName(String hintname)1722 private static RenderingHints getDesktopAAHintsByName(String hintname) { 1723 Object aaHint = null; 1724 hintname = hintname.toLowerCase(Locale.ENGLISH); 1725 if (hintname.equals("on")) { 1726 aaHint = VALUE_TEXT_ANTIALIAS_ON; 1727 } else if (hintname.equals("gasp")) { 1728 aaHint = VALUE_TEXT_ANTIALIAS_GASP; 1729 } else if (hintname.equals("lcd") || hintname.equals("lcd_hrgb")) { 1730 aaHint = VALUE_TEXT_ANTIALIAS_LCD_HRGB; 1731 } else if (hintname.equals("lcd_hbgr")) { 1732 aaHint = VALUE_TEXT_ANTIALIAS_LCD_HBGR; 1733 } else if (hintname.equals("lcd_vrgb")) { 1734 aaHint = VALUE_TEXT_ANTIALIAS_LCD_VRGB; 1735 } else if (hintname.equals("lcd_vbgr")) { 1736 aaHint = VALUE_TEXT_ANTIALIAS_LCD_VBGR; 1737 } 1738 if (aaHint != null) { 1739 RenderingHints map = new RenderingHints(null); 1740 map.put(KEY_TEXT_ANTIALIASING, aaHint); 1741 return map; 1742 } else { 1743 return null; 1744 } 1745 } 1746 1747 /* This method determines whether to use the system font settings, 1748 * or ignore them if a L&F has specified they should be ignored, or 1749 * to override both of these with a system property specified value. 1750 * If the toolkit isn't a SunToolkit, (eg may be headless) then that 1751 * system property isn't applied as desktop properties are considered 1752 * to be inapplicable in that case. In that headless case although 1753 * this method will return "true" the toolkit will return a null map. 1754 */ useSystemAAFontSettings()1755 private static boolean useSystemAAFontSettings() { 1756 if (!checkedSystemAAFontSettings) { 1757 useSystemAAFontSettings = true; /* initially set this true */ 1758 String systemAAFonts = null; 1759 Toolkit tk = Toolkit.getDefaultToolkit(); 1760 if (tk instanceof SunToolkit) { 1761 systemAAFonts = 1762 AccessController.doPrivileged( 1763 new GetPropertyAction("awt.useSystemAAFontSettings")); 1764 } 1765 if (systemAAFonts != null) { 1766 useSystemAAFontSettings = 1767 Boolean.valueOf(systemAAFonts).booleanValue(); 1768 /* If it is anything other than "true", then it may be 1769 * a hint name , or it may be "off, "default", etc. 1770 */ 1771 if (!useSystemAAFontSettings) { 1772 desktopFontHints = getDesktopAAHintsByName(systemAAFonts); 1773 } 1774 } 1775 /* If its still true, apply the extra condition */ 1776 if (useSystemAAFontSettings) { 1777 useSystemAAFontSettings = lastExtraCondition; 1778 } 1779 checkedSystemAAFontSettings = true; 1780 } 1781 return useSystemAAFontSettings; 1782 } 1783 1784 /* A variable defined for the convenience of JDK code */ 1785 public static final String DESKTOPFONTHINTS = "awt.font.desktophints"; 1786 1787 /* Overridden by subclasses to return platform/desktop specific values */ getDesktopAAHints()1788 protected RenderingHints getDesktopAAHints() { 1789 return null; 1790 } 1791 1792 /* Subclass desktop property loading methods call this which 1793 * in turn calls the appropriate subclass implementation of 1794 * getDesktopAAHints() when system settings are being used. 1795 * Its public rather than protected because subclasses may delegate 1796 * to a helper class. 1797 */ getDesktopFontHints()1798 public static RenderingHints getDesktopFontHints() { 1799 if (useSystemAAFontSettings()) { 1800 Toolkit tk = Toolkit.getDefaultToolkit(); 1801 if (tk instanceof SunToolkit) { 1802 Object map = ((SunToolkit)tk).getDesktopAAHints(); 1803 return (RenderingHints)map; 1804 } else { /* Headless Toolkit */ 1805 return null; 1806 } 1807 } else if (desktopFontHints != null) { 1808 /* cloning not necessary as the return value is cloned later, but 1809 * its harmless. 1810 */ 1811 return (RenderingHints)(desktopFontHints.clone()); 1812 } else { 1813 return null; 1814 } 1815 } 1816 1817 isDesktopSupported()1818 public abstract boolean isDesktopSupported(); isTaskbarSupported()1819 public abstract boolean isTaskbarSupported(); 1820 1821 /* 1822 * consumeNextKeyTyped() method is not currently used, 1823 * however Swing could use it in the future. 1824 */ consumeNextKeyTyped(KeyEvent keyEvent)1825 public static synchronized void consumeNextKeyTyped(KeyEvent keyEvent) { 1826 try { 1827 AWTAccessor.getDefaultKeyboardFocusManagerAccessor().consumeNextKeyTyped( 1828 (DefaultKeyboardFocusManager)KeyboardFocusManager. 1829 getCurrentKeyboardFocusManager(), 1830 keyEvent); 1831 } catch (ClassCastException cce) { 1832 cce.printStackTrace(); 1833 } 1834 } 1835 dumpPeers(final PlatformLogger aLog)1836 protected static void dumpPeers(final PlatformLogger aLog) { 1837 AWTAutoShutdown.getInstance().dumpPeers(aLog); 1838 } 1839 1840 /** 1841 * Returns the {@code Window} ancestor of the component {@code comp}. 1842 * @return Window ancestor of the component or component by itself if it is Window; 1843 * null, if component is not a part of window hierarchy 1844 */ getContainingWindow(Component comp)1845 public static Window getContainingWindow(Component comp) { 1846 while (comp != null && !(comp instanceof Window)) { 1847 comp = comp.getParent(); 1848 } 1849 return (Window)comp; 1850 } 1851 1852 private static Boolean sunAwtDisableMixing = null; 1853 1854 /** 1855 * Returns the value of "sun.awt.disableMixing" property. Default 1856 * value is {@code false}. 1857 */ getSunAwtDisableMixing()1858 public static synchronized boolean getSunAwtDisableMixing() { 1859 if (sunAwtDisableMixing == null) { 1860 sunAwtDisableMixing = AccessController.doPrivileged( 1861 new GetBooleanAction("sun.awt.disableMixing")); 1862 } 1863 return sunAwtDisableMixing.booleanValue(); 1864 } 1865 1866 /** 1867 * Returns true if the native GTK libraries are available. The 1868 * default implementation returns false, but UNIXToolkit overrides this 1869 * method to provide a more specific answer. 1870 */ isNativeGTKAvailable()1871 public boolean isNativeGTKAvailable() { 1872 return false; 1873 } 1874 1875 private static final Object DEACTIVATION_TIMES_MAP_KEY = new Object(); 1876 setWindowDeactivationTime(Window w, long time)1877 public synchronized void setWindowDeactivationTime(Window w, long time) { 1878 AppContext ctx = getAppContext(w); 1879 if (ctx == null) { 1880 return; 1881 } 1882 @SuppressWarnings("unchecked") 1883 WeakHashMap<Window, Long> map = (WeakHashMap<Window, Long>)ctx.get(DEACTIVATION_TIMES_MAP_KEY); 1884 if (map == null) { 1885 map = new WeakHashMap<Window, Long>(); 1886 ctx.put(DEACTIVATION_TIMES_MAP_KEY, map); 1887 } 1888 map.put(w, time); 1889 } 1890 getWindowDeactivationTime(Window w)1891 public synchronized long getWindowDeactivationTime(Window w) { 1892 AppContext ctx = getAppContext(w); 1893 if (ctx == null) { 1894 return -1; 1895 } 1896 @SuppressWarnings("unchecked") 1897 WeakHashMap<Window, Long> map = (WeakHashMap<Window, Long>)ctx.get(DEACTIVATION_TIMES_MAP_KEY); 1898 if (map == null) { 1899 return -1; 1900 } 1901 Long time = map.get(w); 1902 return time == null ? -1 : time; 1903 } 1904 updateScreenMenuBarUI()1905 public void updateScreenMenuBarUI() { 1906 } 1907 1908 // Cosntant alpha isWindowOpacitySupported()1909 public boolean isWindowOpacitySupported() { 1910 return false; 1911 } 1912 1913 // Shaping isWindowShapingSupported()1914 public boolean isWindowShapingSupported() { 1915 return false; 1916 } 1917 1918 // Per-pixel alpha isWindowTranslucencySupported()1919 public boolean isWindowTranslucencySupported() { 1920 return false; 1921 } 1922 isTranslucencyCapable(GraphicsConfiguration gc)1923 public boolean isTranslucencyCapable(GraphicsConfiguration gc) { 1924 return false; 1925 } 1926 1927 /** 1928 * Returns true if swing backbuffer should be translucent. 1929 */ isSwingBackbufferTranslucencySupported()1930 public boolean isSwingBackbufferTranslucencySupported() { 1931 return false; 1932 } 1933 1934 /** 1935 * Returns whether or not a containing top level window for the passed 1936 * component is 1937 * {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}. 1938 * 1939 * @param c a Component which toplevel's to check 1940 * @return {@code true} if the passed component is not null and has a 1941 * containing toplevel window which is opaque (so per-pixel translucency 1942 * is not enabled), {@code false} otherwise 1943 * @see GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT 1944 */ isContainingTopLevelOpaque(Component c)1945 public static boolean isContainingTopLevelOpaque(Component c) { 1946 Window w = getContainingWindow(c); 1947 return w != null && w.isOpaque(); 1948 } 1949 1950 /** 1951 * Returns whether or not a containing top level window for the passed 1952 * component is 1953 * {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}. 1954 * 1955 * @param c a Component which toplevel's to check 1956 * @return {@code true} if the passed component is not null and has a 1957 * containing toplevel window which has opacity less than 1958 * 1.0f (which means that it is translucent), {@code false} otherwise 1959 * @see GraphicsDevice.WindowTranslucency#TRANSLUCENT 1960 */ isContainingTopLevelTranslucent(Component c)1961 public static boolean isContainingTopLevelTranslucent(Component c) { 1962 Window w = getContainingWindow(c); 1963 return w != null && w.getOpacity() < 1.0f; 1964 } 1965 1966 /** 1967 * Returns whether the native system requires using the peer.updateWindow() 1968 * method to update the contents of a non-opaque window, or if usual 1969 * painting procedures are sufficient. The default return value covers 1970 * the X11 systems. On MS Windows this method is overriden in WToolkit 1971 * to return true. 1972 */ needUpdateWindow()1973 public boolean needUpdateWindow() { 1974 return false; 1975 } 1976 1977 /** 1978 * Descendants of the SunToolkit should override and put their own logic here. 1979 */ getNumberOfButtons()1980 public int getNumberOfButtons(){ 1981 return 3; 1982 } 1983 1984 /** 1985 * Checks that the given object implements/extends the given 1986 * interface/class. 1987 * 1988 * Note that using the instanceof operator causes a class to be loaded. 1989 * Using this method doesn't load a class and it can be used instead of 1990 * the instanceof operator for performance reasons. 1991 * 1992 * @param obj Object to be checked 1993 * @param type The name of the interface/class. Must be 1994 * fully-qualified interface/class name. 1995 * @return true, if this object implements/extends the given 1996 * interface/class, false, otherwise, or if obj or type is null 1997 */ isInstanceOf(Object obj, String type)1998 public static boolean isInstanceOf(Object obj, String type) { 1999 if (obj == null) return false; 2000 if (type == null) return false; 2001 2002 return isInstanceOf(obj.getClass(), type); 2003 } 2004 isInstanceOf(Class<?> cls, String type)2005 private static boolean isInstanceOf(Class<?> cls, String type) { 2006 if (cls == null) return false; 2007 2008 if (cls.getName().equals(type)) { 2009 return true; 2010 } 2011 2012 for (Class<?> c : cls.getInterfaces()) { 2013 if (c.getName().equals(type)) { 2014 return true; 2015 } 2016 } 2017 return isInstanceOf(cls.getSuperclass(), type); 2018 } 2019 getLightweightFrame(Component c)2020 protected static LightweightFrame getLightweightFrame(Component c) { 2021 for (; c != null; c = c.getParent()) { 2022 if (c instanceof LightweightFrame) { 2023 return (LightweightFrame)c; 2024 } 2025 if (c instanceof Window) { 2026 // Don't traverse owner windows 2027 return null; 2028 } 2029 } 2030 return null; 2031 } 2032 2033 /////////////////////////////////////////////////////////////////////////// 2034 // 2035 // The following methods help set and identify whether a particular 2036 // AWTEvent object was produced by the system or by user code. As of this 2037 // writing the only consumer is the Java Plug-In, although this information 2038 // could be useful to more clients and probably should be formalized in 2039 // the public API. 2040 // 2041 /////////////////////////////////////////////////////////////////////////// 2042 setSystemGenerated(AWTEvent e)2043 public static void setSystemGenerated(AWTEvent e) { 2044 AWTAccessor.getAWTEventAccessor().setSystemGenerated(e); 2045 } 2046 isSystemGenerated(AWTEvent e)2047 public static boolean isSystemGenerated(AWTEvent e) { 2048 return AWTAccessor.getAWTEventAccessor().isSystemGenerated(e); 2049 } 2050 2051 } // class SunToolkit 2052 2053 2054 /* 2055 * PostEventQueue is a Thread that runs in the same AppContext as the 2056 * Java EventQueue. It is a queue of AWTEvents to be posted to the 2057 * Java EventQueue. The toolkit Thread (AWT-Windows/AWT-Motif) posts 2058 * events to this queue, which then calls EventQueue.postEvent(). 2059 * 2060 * We do this because EventQueue.postEvent() may be overridden by client 2061 * code, and we mustn't ever call client code from the toolkit thread. 2062 */ 2063 class PostEventQueue { 2064 private EventQueueItem queueHead = null; 2065 private EventQueueItem queueTail = null; 2066 private final EventQueue eventQueue; 2067 2068 private Thread flushThread = null; 2069 PostEventQueue(EventQueue eq)2070 PostEventQueue(EventQueue eq) { 2071 eventQueue = eq; 2072 } 2073 2074 /* 2075 * Continually post pending AWTEvents to the Java EventQueue. The method 2076 * is synchronized to ensure the flush is completed before a new event 2077 * can be posted to this queue. 2078 * 2079 * 7177040: The method couldn't be wholly synchronized because of calls 2080 * of EventQueue.postEvent() that uses pushPopLock, otherwise it could 2081 * potentially lead to deadlock 2082 */ flush()2083 public void flush() { 2084 2085 Thread newThread = Thread.currentThread(); 2086 2087 try { 2088 EventQueueItem tempQueue; 2089 synchronized (this) { 2090 // Avoid method recursion 2091 if (newThread == flushThread) { 2092 return; 2093 } 2094 // Wait for other threads' flushing 2095 while (flushThread != null) { 2096 wait(); 2097 } 2098 // Skip everything if queue is empty 2099 if (queueHead == null) { 2100 return; 2101 } 2102 // Remember flushing thread 2103 flushThread = newThread; 2104 2105 tempQueue = queueHead; 2106 queueHead = queueTail = null; 2107 } 2108 try { 2109 while (tempQueue != null) { 2110 eventQueue.postEvent(tempQueue.event); 2111 tempQueue = tempQueue.next; 2112 } 2113 } 2114 finally { 2115 // Only the flushing thread can get here 2116 synchronized (this) { 2117 // Forget flushing thread, inform other pending threads 2118 flushThread = null; 2119 notifyAll(); 2120 } 2121 } 2122 } 2123 catch (InterruptedException e) { 2124 // Couldn't allow exception go up, so at least recover the flag 2125 newThread.interrupt(); 2126 } 2127 } 2128 2129 /* 2130 * Enqueue an AWTEvent to be posted to the Java EventQueue. 2131 */ postEvent(AWTEvent event)2132 void postEvent(AWTEvent event) { 2133 EventQueueItem item = new EventQueueItem(event); 2134 2135 synchronized (this) { 2136 if (queueHead == null) { 2137 queueHead = queueTail = item; 2138 } else { 2139 queueTail.next = item; 2140 queueTail = item; 2141 } 2142 } 2143 SunToolkit.wakeupEventQueue(eventQueue, event.getSource() == AWTAutoShutdown.getInstance()); 2144 } 2145 } // class PostEventQueue 2146