1 /*
2 * Copyright (c) 2011, 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.lwawt;
27
28 import java.awt.*;
29 import java.awt.event.*;
30 import java.awt.image.BufferedImage;
31 import java.awt.peer.*;
32 import java.util.List;
33
34 import javax.swing.*;
35
36 import sun.awt.*;
37 import sun.java2d.*;
38 import sun.java2d.loops.Blit;
39 import sun.java2d.loops.CompositeType;
40 import sun.util.logging.PlatformLogger;
41
42 public class LWWindowPeer
43 extends LWContainerPeer<Window, JComponent>
44 implements WindowPeer, FramePeer, DialogPeer, FullScreenCapable
45 {
46 public static enum PeerType {
47 SIMPLEWINDOW,
48 FRAME,
49 DIALOG,
50 EMBEDDEDFRAME
51 }
52
53 private static final sun.util.logging.PlatformLogger focusLog = PlatformLogger.getLogger("sun.lwawt.focus.LWWindowPeer");
54
55 private PlatformWindow platformWindow;
56
57 // Window bounds reported by the native system (as opposed to
58 // regular bounds inherited from LWComponentPeer which are
59 // requested by user and may haven't been applied yet because
60 // of asynchronous requests to the windowing system)
61 private int sysX;
62 private int sysY;
63 private int sysW;
64 private int sysH;
65
66 private static final int MINIMUM_WIDTH = 1;
67 private static final int MINIMUM_HEIGHT = 1;
68
69 private Insets insets = new Insets(0, 0, 0, 0);
70
71 private int screenOn = -1;
72 private GraphicsConfiguration graphicsConfig;
73
74 private SurfaceData surfaceData;
75 private final Object surfaceDataLock = new Object();
76
77 private int backBufferCount;
78 private BufferCapabilities backBufferCaps;
79
80 // The back buffer is used for two purposes:
81 // 1. To render all the lightweight peers
82 // 2. To provide user with a BufferStrategy
83 // Need to check if a single back buffer can be used for both
84 // TODO: VolatileImage
85 // private VolatileImage backBuffer;
86 private volatile BufferedImage backBuffer;
87
88 private volatile int windowState = Frame.NORMAL;
89
90 // A peer where the last mouse event came to. Used to generate
91 // MOUSE_ENTERED/EXITED notifications and by cursor manager to
92 // find the component under cursor
93 private static volatile LWComponentPeer lastMouseEventPeer = null;
94
95 // Peers where all dragged/released events should come to,
96 // depending on what mouse button is being dragged according to Cocoa
97 private static LWComponentPeer mouseDownTarget[] = new LWComponentPeer[3];
98
99 // A bitmask that indicates what mouse buttons produce MOUSE_CLICKED events
100 // on MOUSE_RELEASE. Click events are only generated if there were no drag
101 // events between MOUSE_PRESSED and MOUSE_RELEASED for particular button
102 private static int mouseClickButtons = 0;
103
104 private volatile boolean isOpaque = true;
105
106 private static final Font DEFAULT_FONT = new Font("Lucida Grande", Font.PLAIN, 13);
107
108 private static LWWindowPeer grabbingWindow;
109
110 private volatile boolean skipNextFocusChange;
111
112 /**
113 * Current modal blocker or null.
114 *
115 * Synchronization: peerTreeLock.
116 */
117 private LWWindowPeer blocker;
118
119 public LWWindowPeer(Window target, PlatformComponent platformComponent,
120 PlatformWindow platformWindow)
121 {
122 super(target, platformComponent);
123 this.platformWindow = platformWindow;
124
125 Window owner = target.getOwner();
126 LWWindowPeer ownerPeer = (owner != null) ? (LWWindowPeer)owner.getPeer() : null;
127 PlatformWindow ownerDelegate = (ownerPeer != null) ? ownerPeer.getPlatformWindow() : null;
128
129 // The delegate.initialize() needs a non-null GC on X11.
130 GraphicsConfiguration gc = getTarget().getGraphicsConfiguration();
131 synchronized (getStateLock()) {
132 // graphicsConfig should be updated according to the real window
133 // bounds when the window is shown, see 4868278
134 this.graphicsConfig = gc;
135 }
136
137 if (!target.isFontSet()) {
138 target.setFont(DEFAULT_FONT);
139 }
140
141 if (!target.isBackgroundSet()) {
142 target.setBackground(SystemColor.window);
143 } else {
144 // first we check if user provided alpha for background. This is
145 // similar to what Apple's Java do.
146 // Since JDK7 we should rely on setOpacity() only.
147 // this.opacity = c.getAlpha();
148 // System.out.println("Delegate assigns alpha (we ignore setOpacity()):"
149 // +this.opacity);
150 }
151
152 if (!target.isForegroundSet()) {
153 target.setForeground(SystemColor.windowText);
154 // we should not call setForeground because it will call a repaint
155 // which the peer may not be ready to do yet.
156 }
157
158 platformWindow.initialize(target, this, ownerDelegate);
159 }
160
161 @Override
162 public void initialize() {
163 super.initialize();
164
165 updateInsets(platformWindow.getInsets());
166
167 if (getTarget() instanceof Frame) {
168 setTitle(((Frame)getTarget()).getTitle());
169 setState(((Frame)getTarget()).getExtendedState());
170 } else if (getTarget() instanceof Dialog) {
171 setTitle(((Dialog)getTarget()).getTitle());
172 }
173
174 setAlwaysOnTop(getTarget().isAlwaysOnTop());
175 updateMinimumSize();
176
177 setOpacity(getTarget().getOpacity());
178 setOpaque(getTarget().isOpaque());
179
180 // Create surface data and back buffer
181 replaceSurfaceData(1, null);
182 }
183
184 // Just a helper method
185 public PlatformWindow getPlatformWindow() {
186 return platformWindow;
187 }
188
189 @Override
190 protected LWWindowPeer getWindowPeerOrSelf() {
191 return this;
192 }
193
194 @Override
195 protected void initializeContainerPeer() {
196 // No-op as LWWindowPeer doesn't have any containerPeer
197 }
198
199 // ---- PEER METHODS ---- //
200
201 @Override
202 protected void disposeImpl() {
203 SurfaceData oldData = getSurfaceData();
204 synchronized (surfaceDataLock){
205 surfaceData = null;
206 }
207 if (oldData != null) {
208 oldData.invalidate();
209 }
210 if (isGrabbing()) {
211 ungrab();
212 }
213 destroyBuffers();
214 platformWindow.dispose();
215 super.disposeImpl();
216 }
217
218 @Override
219 public void setVisible(final boolean visible) {
220 if (getSurfaceData() == null) {
221 replaceSurfaceData();
222 }
223
224 if (isVisible() == visible) {
225 return;
226 }
227 super.setVisible(visible);
228
229 // TODO: update graphicsConfig, see 4868278
230 // TODO: don't notify the delegate if our visibility is unchanged
231
232 // it is important to call this method on EDT
233 // to prevent the deadlocks during the painting of the lightweight delegates
234 //TODO: WHY? This is a native-system related call. Perhaps NOT calling
235 // the painting procedure right from the setVisible(), but rather relying
236 // on the native Expose event (or, scheduling the repainting asynchronously)
237 // is better?
238 SwingUtilities.invokeLater(new Runnable() {
239 @Override
240 public void run() {
241 platformWindow.setVisible(visible);
242 if (isSimpleWindow()) {
243 LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer.
244 getInstance(getAppContext());
245
246 if (visible) {
247 changeFocusedWindow(true, true);
248
249 // Focus the owner in case this window is focused.
250 } else if (manager.getCurrentFocusedWindow() == getTarget()) {
251 LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this);
252 if (owner != null) {
253 // KFM will do all the rest.
254 owner.changeFocusedWindow(true, false);
255 }
256 }
257 }
258 }
259 });
260 }
261
262 @Override
263 public GraphicsConfiguration getGraphicsConfiguration() {
264 return graphicsConfig;
265 }
266
267 @Override
268 public boolean updateGraphicsData(GraphicsConfiguration gc) {
269 setGraphicsConfig(gc);
270 return false;
271 }
272
273 protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) {
274 if (getSurfaceData() == null) {
275 return null;
276 }
277 if (fg == null) {
278 fg = SystemColor.windowText;
279 }
280 if (bg == null) {
281 bg = SystemColor.window;
282 }
283 if (f == null) {
284 f = DEFAULT_FONT;
285 }
286 return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f));
287 }
288
289 @Override
290 public void createBuffers(int numBuffers, BufferCapabilities caps)
291 throws AWTException
292 {
293 try {
294 // Assume this method is never called with numBuffers <= 1, as 0 is
295 // unsupported, and 1 corresponds to a SingleBufferStrategy which
296 // doesn't depend on the peer. Screen is considered as a separate
297 // "buffer", that's why numBuffers - 1
298 assert numBuffers > 1;
299
300 replaceSurfaceData(numBuffers - 1, caps);
301 } catch (InvalidPipeException z) {
302 throw new AWTException(z.toString());
303 }
304 }
305
306 @Override
307 public final Image getBackBuffer() {
308 synchronized (getStateLock()) {
309 return backBuffer;
310 }
311 }
312
313 @Override
314 public void flip(int x1, int y1, int x2, int y2,
315 BufferCapabilities.FlipContents flipAction)
316 {
317 platformWindow.flip(x1, y1, x2, y2, flipAction);
318 }
319
320 @Override
321 public final void destroyBuffers() {
322 final Image oldBB = getBackBuffer();
323 synchronized (getStateLock()) {
324 backBuffer = null;
325 }
326 if (oldBB != null) {
327 oldBB.flush();
328 }
329 }
330
331 @Override
332 public void setBounds(int x, int y, int w, int h, int op) {
333 if ((op & SET_CLIENT_SIZE) != 0) {
334 // SET_CLIENT_SIZE is only applicable to window peers, so handle it here
335 // instead of pulling 'insets' field up to LWComponentPeer
336 // no need to add insets since Window's notion of width and height includes insets.
337 op &= ~SET_CLIENT_SIZE;
338 op |= SET_SIZE;
339 }
340
341 if (w < MINIMUM_WIDTH) {
342 w = MINIMUM_WIDTH;
343 }
344 if (h < MINIMUM_HEIGHT) {
345 h = MINIMUM_HEIGHT;
346 }
347
348 // Don't post ComponentMoved/Resized and Paint events
349 // until we've got a notification from the delegate
350 setBounds(x, y, w, h, op, false, false);
351 // Get updated bounds, so we don't have to handle 'op' here manually
352 Rectangle r = getBounds();
353 platformWindow.setBounds(r.x, r.y, r.width, r.height);
354 }
355
356 @Override
357 public Point getLocationOnScreen() {
358 return platformWindow.getLocationOnScreen();
359 }
360
361 /**
362 * Overridden from LWContainerPeer to return the correct insets.
363 * Insets are queried from the delegate and are kept up to date by
364 * requiering when needed (i.e. when the window geometry is changed).
365 */
366 @Override
367 public Insets getInsets() {
368 synchronized (getStateLock()) {
369 return insets;
370 }
371 }
372
373 @Override
374 public FontMetrics getFontMetrics(Font f) {
375 // TODO: check for "use platform metrics" settings
376 return platformWindow.getFontMetrics(f);
377 }
378
379 @Override
380 public void toFront() {
381 platformWindow.toFront();
382 }
383
384 @Override
385 public void toBack() {
386 platformWindow.toBack();
387 }
388
389 @Override
390 public void setZOrder(ComponentPeer above) {
391 throw new RuntimeException("not implemented");
392 }
393
394 @Override
395 public void setAlwaysOnTop(boolean value) {
396 platformWindow.setAlwaysOnTop(value);
397 }
398
399 @Override
400 public void updateFocusableWindowState() {
401 platformWindow.updateFocusableWindowState();
402 }
403
404 @Override
405 public void setModalBlocked(Dialog blocker, boolean blocked) {
406 synchronized (getPeerTreeLock()) {
407 this.blocker = blocked ? (LWWindowPeer)blocker.getPeer() : null;
408 }
409 }
410
411 @Override
412 public void updateMinimumSize() {
413 Dimension d = null;
414 if (getTarget().isMinimumSizeSet()) {
415 d = getTarget().getMinimumSize();
416 }
417 if (d == null) {
418 d = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT);
419 }
420 platformWindow.setMinimumSize(d.width, d.height);
421 }
422
423 @Override
424 public void updateIconImages() {
425 getPlatformWindow().updateIconImages();
426 }
427
428 @Override
429 public void setOpacity(float opacity) {
430 getPlatformWindow().setOpacity(opacity);
431 }
432
433 @Override
434 public void setOpaque(boolean isOpaque) {
435 if (this.isOpaque != isOpaque) {
436 this.isOpaque = isOpaque;
437 getPlatformWindow().setOpaque(isOpaque);
438 replaceSurfaceData();
439 }
440 }
441
442 public boolean isOpaque() {
443 return isOpaque;
444 }
445
446 @Override
447 public void updateWindow() {
448 flushOffscreenGraphics();
449 }
450
451 @Override
452 public void repositionSecurityWarning() {
453 throw new RuntimeException("not implemented");
454 }
455
456 // ---- FRAME PEER METHODS ---- //
457
458 @Override // FramePeer and DialogPeer
459 public void setTitle(String title) {
460 platformWindow.setTitle(title == null ? "" : title);
461 }
462
463 @Override
464 public void setMenuBar(MenuBar mb) {
465 platformWindow.setMenuBar(mb);
466 }
467
468 @Override // FramePeer and DialogPeer
469 public void setResizable(boolean resizable) {
470 platformWindow.setResizable(resizable);
471 }
472
473 @Override
474 public void setState(int state) {
475 platformWindow.setWindowState(state);
476 }
477
478 @Override
479 public int getState() {
480 return windowState;
481 }
482
483 @Override
484 public void setMaximizedBounds(Rectangle bounds) {
485 // TODO: not implemented
486 }
487
488 @Override
489 public void setBoundsPrivate(int x, int y, int width, int height) {
490 setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK);
491 }
492
493 @Override
494 public Rectangle getBoundsPrivate() {
495 throw new RuntimeException("not implemented");
496 }
497
498 // ---- DIALOG PEER METHODS ---- //
499
500 @Override
501 public void blockWindows(List<Window> windows) {
502 //TODO: LWX will probably need some collectJavaToplevels to speed this up
503 for (Window w : windows) {
504 WindowPeer wp = (WindowPeer)w.getPeer();
505 if (wp != null) {
506 wp.setModalBlocked((Dialog)getTarget(), true);
507 }
508 }
509 }
510
511 // ---- PEER NOTIFICATIONS ---- //
512
513 public void notifyIconify(boolean iconify) {
514 //The toplevel target is Frame and states are applicable to it.
515 //Otherwise, the target is Window and it don't have state property.
516 //Hopefully, no such events are posted in the queue so consider the
517 //target as Frame in all cases.
518
519 // REMIND: should we send it anyway if the state not changed since last
520 // time?
521 WindowEvent iconifyEvent = new WindowEvent(getTarget(),
522 iconify ? WindowEvent.WINDOW_ICONIFIED
523 : WindowEvent.WINDOW_DEICONIFIED);
524 postEvent(iconifyEvent);
525
526 int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL;
527 postWindowStateChangedEvent(newWindowState);
528
529 // REMIND: RepaintManager doesn't repaint iconified windows and
530 // hence ignores any repaint request during deiconification.
531 // So, we need to repaint window explicitly when it becomes normal.
532 if (!iconify) {
533 repaintPeer();
534 }
535 }
536
537 public void notifyZoom(boolean isZoomed) {
538 int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL;
539 postWindowStateChangedEvent(newWindowState);
540 }
541
542 /**
543 * Called by the delegate when any part of the window should be repainted.
544 */
545 public void notifyExpose(final int x, final int y, final int w, final int h) {
546 // TODO: there's a serious problem with Swing here: it handles
547 // the exposition internally, so SwingPaintEventDispatcher always
548 // return null from createPaintEvent(). However, we flush the
549 // back buffer here unconditionally, so some flickering may appear.
550 // A possible solution is to split postPaintEvent() into two parts,
551 // and override that part which is only called after if
552 // createPaintEvent() returned non-null value and flush the buffer
553 // from the overridden method
554 flushOnscreenGraphics();
555 repaintPeer(new Rectangle(x, y, w, h));
556 }
557
558 /**
559 * Called by the delegate when this window is moved/resized by user.
560 * There's no notifyReshape() in LWComponentPeer as the only
561 * components which could be resized by user are top-level windows.
562 */
563 public final void notifyReshape(int x, int y, int w, int h) {
564 boolean moved = false;
565 boolean resized = false;
566 synchronized (getStateLock()) {
567 moved = (x != sysX) || (y != sysY);
568 resized = (w != sysW) || (h != sysH);
569 sysX = x;
570 sysY = y;
571 sysW = w;
572 sysH = h;
573 }
574
575 // Check if anything changed
576 if (!moved && !resized) {
577 return;
578 }
579 // First, update peer's bounds
580 setBounds(x, y, w, h, SET_BOUNDS, false, false);
581
582 // Second, update the graphics config and surface data
583 checkIfOnNewScreen();
584 if (resized) {
585 replaceSurfaceData();
586 flushOnscreenGraphics();
587 }
588
589 // Third, COMPONENT_MOVED/COMPONENT_RESIZED events
590 if (moved) {
591 handleMove(x, y, true);
592 }
593 if (resized) {
594 handleResize(w, h,true);
595 }
596 }
597
598 private void clearBackground(final int w, final int h) {
599 final Graphics g = getOnscreenGraphics(getForeground(), getBackground(),
600 getFont());
601 if (g != null) {
602 try {
603 g.clearRect(0, 0, w, h);
604 } finally {
605 g.dispose();
606 }
607 }
608 }
609
610 public void notifyUpdateCursor() {
611 getLWToolkit().getCursorManager().updateCursorLater(this);
612 }
613
614 public void notifyActivation(boolean activation) {
615 changeFocusedWindow(activation, false);
616 }
617
618 // MouseDown in non-client area
619 public void notifyNCMouseDown() {
620 // Ungrab except for a click on a Dialog with the grabbing owner
621 if (grabbingWindow != null &&
622 grabbingWindow != getOwnerFrameDialog(this))
623 {
624 grabbingWindow.ungrab();
625 }
626 }
627
628 // ---- EVENTS ---- //
629
630 /*
631 * Called by the delegate to dispatch the event to Java. Event
632 * coordinates are relative to non-client window are, i.e. the top-left
633 * point of the client area is (insets.top, insets.left).
634 */
635 public void dispatchMouseEvent(int id, long when, int button,
636 int x, int y, int screenX, int screenY,
637 int modifiers, int clickCount, boolean popupTrigger,
638 byte[] bdata)
639 {
640 // TODO: fill "bdata" member of AWTEvent
641 Rectangle r = getBounds();
642 // findPeerAt() expects parent coordinates
643 LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
644 LWWindowPeer lastWindowPeer =
645 (lastMouseEventPeer != null) ? lastMouseEventPeer.getWindowPeerOrSelf() : null;
646 LWWindowPeer curWindowPeer =
647 (targetPeer != null) ? targetPeer.getWindowPeerOrSelf() : null;
648
649 if (id == MouseEvent.MOUSE_EXITED) {
650 // Sometimes we may get MOUSE_EXITED after lastMouseEventPeer is switched
651 // to a peer from another window. So we must first check if this peer is
652 // the same as lastWindowPeer
653 if (lastWindowPeer == this) {
654 if (isEnabled()) {
655 Point lp = lastMouseEventPeer.windowToLocal(x, y,
656 lastWindowPeer);
657 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
658 MouseEvent.MOUSE_EXITED, when,
659 modifiers, lp.x, lp.y, screenX,
660 screenY, clickCount, popupTrigger,
661 button));
662 }
663 lastMouseEventPeer = null;
664 }
665 } else {
666 if (targetPeer != lastMouseEventPeer) {
667 // lastMouseEventPeer may be null if mouse was out of Java windows
668 if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) {
669 // Sometimes, MOUSE_EXITED is not sent by delegate (or is sent a bit
670 // later), in which case lastWindowPeer is another window
671 if (lastWindowPeer != this) {
672 Point oldp = lastMouseEventPeer.windowToLocal(x, y, lastWindowPeer);
673 // Additionally translate from this to lastWindowPeer coordinates
674 Rectangle lr = lastWindowPeer.getBounds();
675 oldp.x += r.x - lr.x;
676 oldp.y += r.y - lr.y;
677 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
678 MouseEvent.MOUSE_EXITED,
679 when, modifiers,
680 oldp.x, oldp.y, screenX, screenY,
681 clickCount, popupTrigger, button));
682 } else {
683 Point oldp = lastMouseEventPeer.windowToLocal(x, y, this);
684 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
685 MouseEvent.MOUSE_EXITED,
686 when, modifiers,
687 oldp.x, oldp.y, screenX, screenY,
688 clickCount, popupTrigger, button));
689 }
690 }
691 lastMouseEventPeer = targetPeer;
692 if (targetPeer != null && targetPeer.isEnabled() && id != MouseEvent.MOUSE_ENTERED) {
693 Point newp = targetPeer.windowToLocal(x, y, curWindowPeer);
694 postEvent(new MouseEvent(targetPeer.getTarget(),
695 MouseEvent.MOUSE_ENTERED,
696 when, modifiers,
697 newp.x, newp.y, screenX, screenY,
698 clickCount, popupTrigger, button));
699 }
700 }
701 // TODO: fill "bdata" member of AWTEvent
702
703 int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0;
704 int otherButtonsPressed = modifiers & ~eventButtonMask;
705
706 // For pressed/dragged/released events OS X treats other
707 // mouse buttons as if they were BUTTON2, so we do the same
708 int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1;
709
710 // MOUSE_ENTERED/EXITED are generated for the components strictly under
711 // mouse even when dragging. That's why we first update lastMouseEventPeer
712 // based on initial targetPeer value and only then recalculate targetPeer
713 // for MOUSE_DRAGGED/RELEASED events
714 if (id == MouseEvent.MOUSE_PRESSED) {
715
716 // Ungrab only if this window is not an owned window of the grabbing one.
717 if (!isGrabbing() && grabbingWindow != null &&
718 grabbingWindow != getOwnerFrameDialog(this))
719 {
720 grabbingWindow.ungrab();
721 }
722 if (otherButtonsPressed == 0) {
723 mouseClickButtons = eventButtonMask;
724 } else {
725 mouseClickButtons |= eventButtonMask;
726 }
727
728 mouseDownTarget[targetIdx] = targetPeer;
729 } else if (id == MouseEvent.MOUSE_DRAGGED) {
730 // Cocoa dragged event has the information about which mouse
731 // button is being dragged. Use it to determine the peer that
732 // should receive the dragged event.
733 targetPeer = mouseDownTarget[targetIdx];
734 mouseClickButtons &= ~modifiers;
735 } else if (id == MouseEvent.MOUSE_RELEASED) {
736 // TODO: currently, mouse released event goes to the same component
737 // that received corresponding mouse pressed event. For most cases,
738 // it's OK, however, we need to make sure that our behavior is consistent
739 // with 1.6 for cases where component in question have been
740 // hidden/removed in between of mouse pressed/released events.
741 targetPeer = mouseDownTarget[targetIdx];
742
743 if ((modifiers & eventButtonMask) == 0) {
744 mouseDownTarget[targetIdx] = null;
745 }
746
747 // mouseClickButtons is updated below, after MOUSE_CLICK is sent
748 }
749
750 // check if we receive mouseEvent from outside the window's bounds
751 // it can be either mouseDragged or mouseReleased
752 if (curWindowPeer == null) {
753 //TODO This can happen if this window is invisible. this is correct behavior in this case?
754 curWindowPeer = this;
755 }
756 if (targetPeer == null) {
757 //TODO This can happen if this window is invisible. this is correct behavior in this case?
758 targetPeer = this;
759 }
760
761
762 Point lp = targetPeer.windowToLocal(x, y, curWindowPeer);
763 if (targetPeer.isEnabled()) {
764 MouseEvent event = new MouseEvent(targetPeer.getTarget(), id,
765 when, modifiers, lp.x, lp.y,
766 screenX, screenY, clickCount,
767 popupTrigger, button);
768 postEvent(event);
769 }
770
771 if (id == MouseEvent.MOUSE_RELEASED) {
772 if ((mouseClickButtons & eventButtonMask) != 0
773 && targetPeer.isEnabled()) {
774 postEvent(new MouseEvent(targetPeer.getTarget(),
775 MouseEvent.MOUSE_CLICKED,
776 when, modifiers,
777 lp.x, lp.y, screenX, screenY,
778 clickCount, popupTrigger, button));
779 }
780 mouseClickButtons &= ~eventButtonMask;
781 }
782
783 notifyUpdateCursor();
784 }
785 }
786
787 public void dispatchMouseWheelEvent(long when, int x, int y, int modifiers,
788 int scrollType, int scrollAmount,
789 int wheelRotation, double preciseWheelRotation,
790 byte[] bdata)
791 {
792 // TODO: could we just use the last mouse event target here?
793 Rectangle r = getBounds();
794 // findPeerAt() expects parent coordinates
795 final LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
796 if (targetPeer == null || !targetPeer.isEnabled()) {
797 return;
798 }
799
800 Point lp = targetPeer.windowToLocal(x, y, this);
801 // TODO: fill "bdata" member of AWTEvent
802 // TODO: screenX/screenY
803 postEvent(new MouseWheelEvent(targetPeer.getTarget(),
804 MouseEvent.MOUSE_WHEEL,
805 when, modifiers,
806 lp.x, lp.y,
807 0, 0, /* screenX, Y */
808 0 /* clickCount */, false /* popupTrigger */,
809 scrollType, scrollAmount,
810 wheelRotation, preciseWheelRotation));
811 }
812
813 /*
814 * Called by the delegate when a key is pressed.
815 */
816 public void dispatchKeyEvent(int id, long when, int modifiers,
817 int keyCode, char keyChar, int keyLocation)
818 {
819 LWComponentPeer focusOwner =
820 LWKeyboardFocusManagerPeer.getInstance(getAppContext()).
821 getFocusOwner();
822
823 // Null focus owner may receive key event when
824 // application hides the focused window upon ESC press
825 // (AWT transfers/clears the focus owner) and pending ESC release
826 // may come to already hidden window. This check eliminates NPE.
827 if (focusOwner != null) {
828 KeyEvent event =
829 new KeyEvent(focusOwner.getTarget(), id, when, modifiers,
830 keyCode, keyChar, keyLocation);
831 focusOwner.postEvent(event);
832 }
833 }
834
835
836 // ---- UTILITY METHODS ---- //
837
838 private void postWindowStateChangedEvent(int newWindowState) {
839 if (getTarget() instanceof Frame) {
840 AWTAccessor.getFrameAccessor().setExtendedState(
841 (Frame)getTarget(), newWindowState);
842 }
843 WindowEvent stateChangedEvent = new WindowEvent(getTarget(),
844 WindowEvent.WINDOW_STATE_CHANGED,
845 windowState, newWindowState);
846 postEvent(stateChangedEvent);
847 windowState = newWindowState;
848 }
849
850 private static int getGraphicsConfigScreen(GraphicsConfiguration gc) {
851 // TODO: this method can be implemented in a more
852 // efficient way by forwarding to the delegate
853 GraphicsDevice gd = gc.getDevice();
854 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
855 GraphicsDevice[] gds = ge.getScreenDevices();
856 for (int i = 0; i < gds.length; i++) {
857 if (gds[i] == gd) {
858 return i;
859 }
860 }
861 // Should never happen if gc is a screen device config
862 return 0;
863 }
864
865 private static GraphicsConfiguration getScreenGraphicsConfig(int screen) {
866 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
867 GraphicsDevice[] gds = ge.getScreenDevices();
868 if (screen >= gds.length) {
869 // This could happen during device addition/removal. Use
870 // the default screen device in this case
871 return ge.getDefaultScreenDevice().getDefaultConfiguration();
872 }
873 return gds[screen].getDefaultConfiguration();
874 }
875
876 /*
877 * This method is called when window's graphics config is changed from
878 * the app code (e.g. when the window is made non-opaque) or when
879 * the window is moved to another screen by user.
880 *
881 * Returns true if the graphics config has been changed, false otherwise.
882 */
883 private boolean setGraphicsConfig(GraphicsConfiguration gc) {
884 synchronized (getStateLock()) {
885 if (graphicsConfig == gc) {
886 return false;
887 }
888 // If window's graphics config is changed from the app code, the
889 // config correspond to the same device as before; when the window
890 // is moved by user, screenOn is updated in checkIfOnNewScreen().
891 // In either case, there's nothing to do with screenOn here
892 graphicsConfig = gc;
893 }
894 // SurfaceData is replaced later in updateGraphicsData()
895 return true;
896 }
897
898 private void checkIfOnNewScreen() {
899 int windowScreen = platformWindow.getScreenImOn();
900 synchronized (getStateLock()) {
901 if (windowScreen == screenOn) {
902 return;
903 }
904 screenOn = windowScreen;
905 }
906
907 // TODO: DisplayChangedListener stuff
908 final GraphicsConfiguration newGC = getScreenGraphicsConfig(windowScreen);
909 if (!setGraphicsConfig(newGC)) return;
910
911 SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
912 public void run() {
913 AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC);
914 }
915 });
916 }
917
918 /**
919 * This method returns a back buffer Graphics to render all the
920 * peers to. After the peer is painted, the back buffer contents
921 * should be flushed to the screen. All the target painting
922 * (Component.paint() method) should be done directly to the screen.
923 */
924 protected final Graphics getOffscreenGraphics(Color fg, Color bg, Font f) {
925 final Image bb = getBackBuffer();
926 if (bb == null) {
927 return null;
928 }
929 if (fg == null) {
930 fg = SystemColor.windowText;
931 }
932 if (bg == null) {
933 bg = SystemColor.window;
934 }
935 if (f == null) {
936 f = DEFAULT_FONT;
937 }
938 final Graphics2D g = (Graphics2D) bb.getGraphics();
939 if (g != null) {
940 g.setColor(fg);
941 g.setBackground(bg);
942 g.setFont(f);
943 }
944 return g;
945 }
946
947 /*
948 * May be called by delegate to provide SD to Java2D code.
949 */
950 public SurfaceData getSurfaceData() {
951 synchronized (surfaceDataLock) {
952 return surfaceData;
953 }
954 }
955
956 private void replaceSurfaceData() {
957 replaceSurfaceData(backBufferCount, backBufferCaps);
958 }
959
960 private void replaceSurfaceData(int newBackBufferCount,
961 BufferCapabilities newBackBufferCaps) {
962 synchronized (surfaceDataLock) {
963 final SurfaceData oldData = getSurfaceData();
964 surfaceData = platformWindow.replaceSurfaceData();
965 // TODO: volatile image
966 // VolatileImage oldBB = backBuffer;
967 BufferedImage oldBB = backBuffer;
968 backBufferCount = newBackBufferCount;
969 backBufferCaps = newBackBufferCaps;
970 final Rectangle size = getSize();
971 if (getSurfaceData() != null && oldData != getSurfaceData()) {
972 clearBackground(size.width, size.height);
973 }
974 blitSurfaceData(oldData, getSurfaceData());
975
976 if (oldData != null && oldData != getSurfaceData()) {
977 // TODO: drop oldData for D3D/WGL pipelines
978 // This can only happen when this peer is being created
979 oldData.flush();
980 }
981
982 // TODO: volatile image
983 // backBuffer = (VolatileImage)delegate.createBackBuffer();
984 backBuffer = (BufferedImage) platformWindow.createBackBuffer();
985 if (backBuffer != null) {
986 Graphics g = backBuffer.getGraphics();
987 try {
988 Rectangle r = getBounds();
989 g.setColor(getBackground());
990 g.fillRect(0, 0, r.width, r.height);
991 if (oldBB != null) {
992 // Draw the old back buffer to the new one
993 g.drawImage(oldBB, 0, 0, null);
994 oldBB.flush();
995 }
996 } finally {
997 g.dispose();
998 }
999 }
1000 }
1001 }
1002
1003 private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) {
1004 //TODO blit. proof-of-concept
1005 if (src != dst && src != null && dst != null
1006 && !(dst instanceof NullSurfaceData)
1007 && !(src instanceof NullSurfaceData)
1008 && src.getSurfaceType().equals(dst.getSurfaceType())) {
1009 final Rectangle size = getSize();
1010 final Blit blit = Blit.locate(src.getSurfaceType(),
1011 CompositeType.Src,
1012 dst.getSurfaceType());
1013 if (blit != null) {
1014 blit.Blit(src, dst, ((Graphics2D) getGraphics()).getComposite(),
1015 getRegion(), 0, 0, 0, 0, size.width, size.height);
1016 }
1017 }
1018 }
1019
1020 public int getBackBufferCount() {
1021 return backBufferCount;
1022 }
1023
1024 public BufferCapabilities getBackBufferCaps() {
1025 return backBufferCaps;
1026 }
1027
1028 /*
1029 * Request the window insets from the delegate and compares it
1030 * with the current one. This method is mostly called by the
1031 * delegate, e.g. when the window state is changed and insets
1032 * should be recalculated.
1033 *
1034 * This method may be called on the toolkit thread.
1035 */
1036 public boolean updateInsets(Insets newInsets) {
1037 boolean changed = false;
1038 synchronized (getStateLock()) {
1039 changed = (insets.equals(newInsets));
1040 insets = newInsets;
1041 }
1042
1043 if (changed) {
1044 replaceSurfaceData();
1045 }
1046
1047 return changed;
1048 }
1049
1050 public static LWWindowPeer getWindowUnderCursor() {
1051 return lastMouseEventPeer != null ? lastMouseEventPeer.getWindowPeerOrSelf() : null;
1052 }
1053
1054 public boolean requestWindowFocus(CausedFocusEvent.Cause cause) {
1055 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1056 focusLog.fine("requesting native focus to " + this);
1057 }
1058
1059 if (!focusAllowedFor()) {
1060 focusLog.fine("focus is not allowed");
1061 return false;
1062 }
1063
1064 // Cross-app activation requests are not allowed.
1065 if (cause != CausedFocusEvent.Cause.MOUSE_EVENT &&
1066 !((LWToolkit)Toolkit.getDefaultToolkit()).isApplicationActive())
1067 {
1068 focusLog.fine("the app is inactive, so the request is rejected");
1069 return false;
1070 }
1071
1072 Window currentActive = KeyboardFocusManager.
1073 getCurrentKeyboardFocusManager().getActiveWindow();
1074
1075 // Make the owner active window.
1076 if (isSimpleWindow()) {
1077 LWWindowPeer owner = getOwnerFrameDialog(this);
1078
1079 // If owner is not natively active, request native
1080 // activation on it w/o sending events up to java.
1081 if (owner != null && !owner.platformWindow.isActive()) {
1082 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1083 focusLog.fine("requesting native focus to the owner " + owner);
1084 }
1085 LWWindowPeer currentActivePeer = (currentActive != null ?
1086 (LWWindowPeer)currentActive.getPeer() : null);
1087
1088 // Ensure the opposite is natively active and suppress sending events.
1089 if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) {
1090 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1091 focusLog.fine("the opposite is " + currentActivePeer);
1092 }
1093 currentActivePeer.skipNextFocusChange = true;
1094 }
1095 owner.skipNextFocusChange = true;
1096
1097 owner.platformWindow.requestWindowFocus();
1098 }
1099
1100 // DKFM will synthesize all the focus/activation events correctly.
1101 changeFocusedWindow(true, false);
1102 return true;
1103
1104 // In case the toplevel is active but not focused, change focus directly,
1105 // as requesting native focus on it will not have effect.
1106 } else if (getTarget() == currentActive && !getTarget().hasFocus()) {
1107
1108 changeFocusedWindow(true, false);
1109 return true;
1110 }
1111 return platformWindow.requestWindowFocus();
1112 }
1113
1114 private boolean focusAllowedFor() {
1115 Window window = getTarget();
1116 // TODO: check if modal blocked
1117 return window.isVisible() && window.isEnabled() && isFocusableWindow();
1118 }
1119
1120 private boolean isFocusableWindow() {
1121 boolean focusable = getTarget().isFocusableWindow();
1122 if (isSimpleWindow()) {
1123 LWWindowPeer ownerPeer = getOwnerFrameDialog(this);
1124 if (ownerPeer == null) {
1125 return false;
1126 }
1127 return focusable && ownerPeer.getTarget().isFocusableWindow();
1128 }
1129 return focusable;
1130 }
1131
1132 public boolean isSimpleWindow() {
1133 Window window = getTarget();
1134 return !(window instanceof Dialog || window instanceof Frame);
1135 }
1136
1137 /*
1138 * "Delegates" the responsibility of managing focus to keyboard focus manager.
1139 */
1140 private void changeFocusedWindow(boolean becomesFocused, boolean isShowing) {
1141 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1142 focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this);
1143 }
1144 if (isShowing && !getTarget().isAutoRequestFocus() || skipNextFocusChange) {
1145 focusLog.fine("skipping focus change");
1146 skipNextFocusChange = false;
1147 return;
1148 }
1149 if (!isFocusableWindow() && becomesFocused) {
1150 focusLog.fine("the window is not focusable");
1151 return;
1152 }
1153 if (becomesFocused) {
1154 synchronized (getPeerTreeLock()) {
1155 if (blocker != null) {
1156 if (focusLog.isLoggable(PlatformLogger.FINEST)) {
1157 focusLog.finest("the window is blocked by " + blocker);
1158 }
1159 return;
1160 }
1161 }
1162 }
1163
1164 LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer.
1165 getInstance(getAppContext());
1166
1167 Window oppositeWindow = becomesFocused ? manager.getCurrentFocusedWindow() : null;
1168
1169 // Note, the method is not called:
1170 // - when the opposite (gaining focus) window is an owned/owner window.
1171 // - for a simple window in any case.
1172 if (!becomesFocused &&
1173 (isGrabbing() || getOwnerFrameDialog(grabbingWindow) == this))
1174 {
1175 focusLog.fine("ungrabbing on " + grabbingWindow);
1176 // ungrab a simple window if its owner looses activation.
1177 grabbingWindow.ungrab();
1178 }
1179
1180 manager.setFocusedWindow(becomesFocused ? LWWindowPeer.this : null);
1181
1182 int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;
1183 WindowEvent windowEvent = new WindowEvent(getTarget(), eventID, oppositeWindow);
1184
1185 // TODO: wrap in SequencedEvent
1186 postEvent(windowEvent);
1187 }
1188
1189 private static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) {
1190 Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1191 while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
1192 owner = owner.getOwner();
1193 }
1194 return owner != null ? (LWWindowPeer)owner.getPeer() : null;
1195 }
1196
1197 /**
1198 * Returns the foremost modal blocker of this window, or null.
1199 */
1200 public LWWindowPeer getBlocker() {
1201 synchronized (getPeerTreeLock()) {
1202 LWWindowPeer blocker = this.blocker;
1203 if (blocker == null) {
1204 return null;
1205 }
1206 while (blocker.blocker != null) {
1207 blocker = blocker.blocker;
1208 }
1209 return blocker;
1210 }
1211 }
1212
1213 public void enterFullScreenMode() {
1214 platformWindow.enterFullScreenMode();
1215 }
1216
1217 public void exitFullScreenMode() {
1218 platformWindow.exitFullScreenMode();
1219 }
1220
1221 public long getLayerPtr() {
1222 return getPlatformWindow().getLayerPtr();
1223 }
1224
1225 void grab() {
1226 if (grabbingWindow != null && !isGrabbing()) {
1227 grabbingWindow.ungrab();
1228 }
1229 grabbingWindow = this;
1230 }
1231
1232 void ungrab() {
1233 if (isGrabbing()) {
1234 grabbingWindow = null;
1235 postEvent(new UngrabEvent(getTarget()));
1236 }
1237 }
1238
1239 private boolean isGrabbing() {
1240 return this == grabbingWindow;
1241 }
1242
1243 @Override
1244 public String toString() {
1245 return super.toString() + " [target is " + getTarget() + "]";
1246 }
1247 }