1 /*
2 * Copyright (c) 2011, 2012, 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 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 GraphicsDevice graphicsDevice;
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 }
149
150 if (!target.isForegroundSet()) {
151 target.setForeground(SystemColor.windowText);
152 // we should not call setForeground because it will call a repaint
153 // which the peer may not be ready to do yet.
154 }
155
156 platformWindow.initialize(target, this, ownerDelegate);
157 }
158
159 @Override
160 void initializeImpl() {
161 super.initializeImpl();
162 if (getTarget() instanceof Frame) {
163 setTitle(((Frame) getTarget()).getTitle());
164 setState(((Frame) getTarget()).getExtendedState());
165 } else if (getTarget() instanceof Dialog) {
166 setTitle(((Dialog) getTarget()).getTitle());
167 }
168
169 setAlwaysOnTop(getTarget().isAlwaysOnTop());
170 updateMinimumSize();
171
172 final float opacity = getTarget().getOpacity();
173 if (opacity < 1.0f) {
174 setOpacity(opacity);
175 }
176
177 setOpaque(getTarget().isOpaque());
178
179 updateInsets(platformWindow.getInsets());
180 if (getSurfaceData() == null) {
181 replaceSurfaceData();
182 }
183 }
184
185 // Just a helper method
186 public PlatformWindow getPlatformWindow() {
187 return platformWindow;
188 }
189
190 @Override
191 protected LWWindowPeer getWindowPeerOrSelf() {
192 return this;
193 }
194
195 @Override
196 protected void initializeContainerPeer() {
197 // No-op as LWWindowPeer doesn't have any containerPeer
198 }
199
200 // ---- PEER METHODS ---- //
201
202 @Override
203 protected void disposeImpl() {
204 SurfaceData oldData = getSurfaceData();
205 synchronized (surfaceDataLock){
206 surfaceData = null;
207 }
208 if (oldData != null) {
209 oldData.invalidate();
210 }
211 if (isGrabbing()) {
212 ungrab();
213 }
214 destroyBuffers();
215 platformWindow.dispose();
216 super.disposeImpl();
217 }
218
219 @Override
220 protected void setVisibleImpl(final boolean visible) {
221 super.setVisibleImpl(visible);
222 // TODO: update graphicsConfig, see 4868278
223 platformWindow.setVisible(visible);
224 if (isSimpleWindow()) {
225 LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer.
226 getInstance(getAppContext());
227
228 if (visible) {
229 if (!getTarget().isAutoRequestFocus()) {
230 return;
231 } else {
232 requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
233 }
234 // Focus the owner in case this window is focused.
235 } else if (manager.getCurrentFocusedWindow() == getTarget()) {
236 // Transfer focus to the owner.
237 LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this);
238 if (owner != null) {
239 owner.requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
240 }
241 }
242 }
243 }
244
245 @Override
246 public GraphicsConfiguration getGraphicsConfiguration() {
247 return graphicsConfig;
248 }
249
250 @Override
251 public boolean updateGraphicsData(GraphicsConfiguration gc) {
252 setGraphicsConfig(gc);
253 return false;
254 }
255
256 protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) {
257 if (getSurfaceData() == null) {
258 return null;
259 }
260 if (fg == null) {
261 fg = SystemColor.windowText;
262 }
263 if (bg == null) {
264 bg = SystemColor.window;
265 }
266 if (f == null) {
267 f = DEFAULT_FONT;
268 }
269 return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f));
270 }
271
272 @Override
273 public void createBuffers(int numBuffers, BufferCapabilities caps)
274 throws AWTException
275 {
276 try {
277 // Assume this method is never called with numBuffers <= 1, as 0 is
278 // unsupported, and 1 corresponds to a SingleBufferStrategy which
279 // doesn't depend on the peer. Screen is considered as a separate
280 // "buffer", that's why numBuffers - 1
281 assert numBuffers > 1;
282
283 replaceSurfaceData(numBuffers - 1, caps);
284 } catch (InvalidPipeException z) {
285 throw new AWTException(z.toString());
286 }
287 }
288
289 @Override
290 public final Image getBackBuffer() {
291 synchronized (getStateLock()) {
292 return backBuffer;
293 }
294 }
295
296 @Override
297 public void flip(int x1, int y1, int x2, int y2,
298 BufferCapabilities.FlipContents flipAction)
299 {
300 platformWindow.flip(x1, y1, x2, y2, flipAction);
301 }
302
303 @Override
304 public final void destroyBuffers() {
305 final Image oldBB = getBackBuffer();
306 synchronized (getStateLock()) {
307 backBuffer = null;
308 }
309 if (oldBB != null) {
310 oldBB.flush();
311 }
312 }
313
314 @Override
315 public void setBounds(int x, int y, int w, int h, int op) {
316 if ((op & SET_CLIENT_SIZE) != 0) {
317 // SET_CLIENT_SIZE is only applicable to window peers, so handle it here
318 // instead of pulling 'insets' field up to LWComponentPeer
319 // no need to add insets since Window's notion of width and height includes insets.
320 op &= ~SET_CLIENT_SIZE;
321 op |= SET_SIZE;
322 }
323
324 if (w < MINIMUM_WIDTH) {
325 w = MINIMUM_WIDTH;
326 }
327 if (h < MINIMUM_HEIGHT) {
328 h = MINIMUM_HEIGHT;
329 }
330
331 // Don't post ComponentMoved/Resized and Paint events
332 // until we've got a notification from the delegate
333 setBounds(x, y, w, h, op, false, false);
334 // Get updated bounds, so we don't have to handle 'op' here manually
335 Rectangle r = getBounds();
336 platformWindow.setBounds(r.x, r.y, r.width, r.height);
337 }
338
339 @Override
340 public Point getLocationOnScreen() {
341 return platformWindow.getLocationOnScreen();
342 }
343
344 /**
345 * Overridden from LWContainerPeer to return the correct insets.
346 * Insets are queried from the delegate and are kept up to date by
347 * requiering when needed (i.e. when the window geometry is changed).
348 */
349 @Override
350 public Insets getInsets() {
351 synchronized (getStateLock()) {
352 return insets;
353 }
354 }
355
356 @Override
357 public FontMetrics getFontMetrics(Font f) {
358 // TODO: check for "use platform metrics" settings
359 return platformWindow.getFontMetrics(f);
360 }
361
362 @Override
363 public void toFront() {
364 platformWindow.toFront();
365 }
366
367 @Override
368 public void toBack() {
369 platformWindow.toBack();
370 }
371
372 @Override
373 public void setZOrder(ComponentPeer above) {
374 throw new RuntimeException("not implemented");
375 }
376
377 @Override
378 public void setAlwaysOnTop(boolean value) {
379 platformWindow.setAlwaysOnTop(value);
380 }
381
382 @Override
383 public void updateFocusableWindowState() {
384 platformWindow.updateFocusableWindowState();
385 }
386
387 @Override
388 public void setModalBlocked(Dialog blocker, boolean blocked) {
389 synchronized (getPeerTreeLock()) {
390 this.blocker = blocked ? (LWWindowPeer)blocker.getPeer() : null;
391 }
392
393 platformWindow.setModalBlocked(blocked);
394 }
395
396 @Override
397 public void updateMinimumSize() {
398 Dimension d = null;
399 if (getTarget().isMinimumSizeSet()) {
400 d = getTarget().getMinimumSize();
401 }
402 if (d == null) {
403 d = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT);
404 }
405 platformWindow.setMinimumSize(d.width, d.height);
406 }
407
408 @Override
409 public void updateIconImages() {
410 getPlatformWindow().updateIconImages();
411 }
412
413 @Override
414 public void setOpacity(float opacity) {
415 getPlatformWindow().setOpacity(opacity);
416 repaintPeer();
417 }
418
419 @Override
420 public final void setOpaque(final boolean isOpaque) {
421 if (this.isOpaque != isOpaque) {
422 this.isOpaque = isOpaque;
423 getPlatformWindow().setOpaque(isOpaque);
424 replaceSurfaceData();
425 repaintPeer();
426 }
427 }
428
429 public final boolean isOpaque() {
430 return isOpaque;
431 }
432
433 @Override
434 public void updateWindow() {
435 flushOffscreenGraphics();
436 }
437
438 @Override
439 public void repositionSecurityWarning() {
440 throw new RuntimeException("not implemented");
441 }
442
443 // ---- FRAME PEER METHODS ---- //
444
445 @Override // FramePeer and DialogPeer
446 public void setTitle(String title) {
447 platformWindow.setTitle(title == null ? "" : title);
448 }
449
450 @Override
451 public void setMenuBar(MenuBar mb) {
452 platformWindow.setMenuBar(mb);
453 }
454
455 @Override // FramePeer and DialogPeer
456 public void setResizable(boolean resizable) {
457 platformWindow.setResizable(resizable);
458 }
459
460 @Override
461 public void setState(int state) {
462 platformWindow.setWindowState(state);
463 }
464
465 @Override
466 public int getState() {
467 return windowState;
468 }
469
470 @Override
471 public void setMaximizedBounds(Rectangle bounds) {
472 // TODO: not implemented
473 }
474
475 @Override
476 public void setBoundsPrivate(int x, int y, int width, int height) {
477 setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK);
478 }
479
480 @Override
481 public Rectangle getBoundsPrivate() {
482 throw new RuntimeException("not implemented");
483 }
484
485 // ---- DIALOG PEER METHODS ---- //
486
487 @Override
488 public void blockWindows(List<Window> windows) {
489 //TODO: LWX will probably need some collectJavaToplevels to speed this up
490 for (Window w : windows) {
491 WindowPeer wp = (WindowPeer)w.getPeer();
492 if (wp != null) {
493 wp.setModalBlocked((Dialog)getTarget(), true);
494 }
495 }
496 }
497
498 // ---- PEER NOTIFICATIONS ---- //
499
500 public void notifyIconify(boolean iconify) {
501 //The toplevel target is Frame and states are applicable to it.
502 //Otherwise, the target is Window and it don't have state property.
503 //Hopefully, no such events are posted in the queue so consider the
504 //target as Frame in all cases.
505
506 // REMIND: should we send it anyway if the state not changed since last
507 // time?
508 WindowEvent iconifyEvent = new WindowEvent(getTarget(),
509 iconify ? WindowEvent.WINDOW_ICONIFIED
510 : WindowEvent.WINDOW_DEICONIFIED);
511 postEvent(iconifyEvent);
512
513 int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL;
514 postWindowStateChangedEvent(newWindowState);
515
516 // REMIND: RepaintManager doesn't repaint iconified windows and
517 // hence ignores any repaint request during deiconification.
518 // So, we need to repaint window explicitly when it becomes normal.
519 if (!iconify) {
520 repaintPeer();
521 }
522 }
523
524 public void notifyZoom(boolean isZoomed) {
525 int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL;
526 postWindowStateChangedEvent(newWindowState);
527 }
528
529 /**
530 * Called by the delegate when any part of the window should be repainted.
531 */
532 public void notifyExpose(final int x, final int y, final int w, final int h) {
533 // TODO: there's a serious problem with Swing here: it handles
534 // the exposition internally, so SwingPaintEventDispatcher always
535 // return null from createPaintEvent(). However, we flush the
536 // back buffer here unconditionally, so some flickering may appear.
537 // A possible solution is to split postPaintEvent() into two parts,
538 // and override that part which is only called after if
539 // createPaintEvent() returned non-null value and flush the buffer
540 // from the overridden method
541 flushOnscreenGraphics();
542 repaintPeer(new Rectangle(x, y, w, h));
543 }
544
545 /**
546 * Called by the delegate when this window is moved/resized by user.
547 * There's no notifyReshape() in LWComponentPeer as the only
548 * components which could be resized by user are top-level windows.
549 */
550 public final void notifyReshape(int x, int y, int w, int h) {
551 boolean moved = false;
552 boolean resized = false;
553 synchronized (getStateLock()) {
554 moved = (x != sysX) || (y != sysY);
555 resized = (w != sysW) || (h != sysH);
556 sysX = x;
557 sysY = y;
558 sysW = w;
559 sysH = h;
560 }
561
562 // Check if anything changed
563 if (!moved && !resized) {
564 return;
565 }
566 // First, update peer's bounds
567 setBounds(x, y, w, h, SET_BOUNDS, false, false);
568
569 // Second, update the graphics config and surface data
570 checkIfOnNewScreen();
571 if (resized) {
572 replaceSurfaceData();
573 flushOnscreenGraphics();
574 }
575
576 // Third, COMPONENT_MOVED/COMPONENT_RESIZED events
577 if (moved) {
578 handleMove(x, y, true);
579 }
580 if (resized) {
581 handleResize(w, h,true);
582 }
583 }
584
585 private void clearBackground(final int w, final int h) {
586 final Graphics g = getOnscreenGraphics(getForeground(), getBackground(),
587 getFont());
588 if (g != null) {
589 try {
590 g.clearRect(0, 0, w, h);
591 } finally {
592 g.dispose();
593 }
594 }
595 }
596
597 public void notifyUpdateCursor() {
598 getLWToolkit().getCursorManager().updateCursorLater(this);
599 }
600
601 public void notifyActivation(boolean activation) {
602 changeFocusedWindow(activation);
603 }
604
605 // MouseDown in non-client area
606 public void notifyNCMouseDown() {
607 // Ungrab except for a click on a Dialog with the grabbing owner
608 if (grabbingWindow != null &&
609 grabbingWindow != getOwnerFrameDialog(this))
610 {
611 grabbingWindow.ungrab();
612 }
613 }
614
615 // ---- EVENTS ---- //
616
617 /*
618 * Called by the delegate to dispatch the event to Java. Event
619 * coordinates are relative to non-client window are, i.e. the top-left
620 * point of the client area is (insets.top, insets.left).
621 */
622 public void dispatchMouseEvent(int id, long when, int button,
623 int x, int y, int screenX, int screenY,
624 int modifiers, int clickCount, boolean popupTrigger,
625 byte[] bdata)
626 {
627 // TODO: fill "bdata" member of AWTEvent
628 Rectangle r = getBounds();
629 // findPeerAt() expects parent coordinates
630 LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
631 LWWindowPeer lastWindowPeer =
632 (lastMouseEventPeer != null) ? lastMouseEventPeer.getWindowPeerOrSelf() : null;
633 LWWindowPeer curWindowPeer =
634 (targetPeer != null) ? targetPeer.getWindowPeerOrSelf() : null;
635
636 if (id == MouseEvent.MOUSE_EXITED) {
637 // Sometimes we may get MOUSE_EXITED after lastMouseEventPeer is switched
638 // to a peer from another window. So we must first check if this peer is
639 // the same as lastWindowPeer
640 if (lastWindowPeer == this) {
641 if (isEnabled()) {
642 Point lp = lastMouseEventPeer.windowToLocal(x, y,
643 lastWindowPeer);
644 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
645 MouseEvent.MOUSE_EXITED, when,
646 modifiers, lp.x, lp.y, screenX,
647 screenY, clickCount, popupTrigger,
648 button));
649 }
650 lastMouseEventPeer = null;
651 }
652 } else {
653 if (targetPeer != lastMouseEventPeer) {
654
655 if (id != MouseEvent.MOUSE_DRAGGED || lastMouseEventPeer == null) {
656 // lastMouseEventPeer may be null if mouse was out of Java windows
657 if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) {
658 // Sometimes, MOUSE_EXITED is not sent by delegate (or is sent a bit
659 // later), in which case lastWindowPeer is another window
660 if (lastWindowPeer != this) {
661 Point oldp = lastMouseEventPeer.windowToLocal(x, y, lastWindowPeer);
662 // Additionally translate from this to lastWindowPeer coordinates
663 Rectangle lr = lastWindowPeer.getBounds();
664 oldp.x += r.x - lr.x;
665 oldp.y += r.y - lr.y;
666 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
667 MouseEvent.MOUSE_EXITED,
668 when, modifiers,
669 oldp.x, oldp.y, screenX, screenY,
670 clickCount, popupTrigger, button));
671 } else {
672 Point oldp = lastMouseEventPeer.windowToLocal(x, y, this);
673 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
674 MouseEvent.MOUSE_EXITED,
675 when, modifiers,
676 oldp.x, oldp.y, screenX, screenY,
677 clickCount, popupTrigger, button));
678 }
679 }
680 if (targetPeer != null && targetPeer.isEnabled() && id != MouseEvent.MOUSE_ENTERED) {
681 Point newp = targetPeer.windowToLocal(x, y, curWindowPeer);
682 postEvent(new MouseEvent(targetPeer.getTarget(),
683 MouseEvent.MOUSE_ENTERED,
684 when, modifiers,
685 newp.x, newp.y, screenX, screenY,
686 clickCount, popupTrigger, button));
687 }
688 }
689 lastMouseEventPeer = targetPeer;
690 }
691 // TODO: fill "bdata" member of AWTEvent
692
693 int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0;
694 int otherButtonsPressed = modifiers & ~eventButtonMask;
695
696 // For pressed/dragged/released events OS X treats other
697 // mouse buttons as if they were BUTTON2, so we do the same
698 int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1;
699
700 // MOUSE_ENTERED/EXITED are generated for the components strictly under
701 // mouse even when dragging. That's why we first update lastMouseEventPeer
702 // based on initial targetPeer value and only then recalculate targetPeer
703 // for MOUSE_DRAGGED/RELEASED events
704 if (id == MouseEvent.MOUSE_PRESSED) {
705
706 // Ungrab only if this window is not an owned window of the grabbing one.
707 if (!isGrabbing() && grabbingWindow != null &&
708 grabbingWindow != getOwnerFrameDialog(this))
709 {
710 grabbingWindow.ungrab();
711 }
712 if (otherButtonsPressed == 0) {
713 mouseClickButtons = eventButtonMask;
714 } else {
715 mouseClickButtons |= eventButtonMask;
716 }
717
718 mouseDownTarget[targetIdx] = targetPeer;
719 } else if (id == MouseEvent.MOUSE_DRAGGED) {
720 // Cocoa dragged event has the information about which mouse
721 // button is being dragged. Use it to determine the peer that
722 // should receive the dragged event.
723 targetPeer = mouseDownTarget[targetIdx];
724 mouseClickButtons &= ~modifiers;
725 } else if (id == MouseEvent.MOUSE_RELEASED) {
726 // TODO: currently, mouse released event goes to the same component
727 // that received corresponding mouse pressed event. For most cases,
728 // it's OK, however, we need to make sure that our behavior is consistent
729 // with 1.6 for cases where component in question have been
730 // hidden/removed in between of mouse pressed/released events.
731 targetPeer = mouseDownTarget[targetIdx];
732
733 if ((modifiers & eventButtonMask) == 0) {
734 mouseDownTarget[targetIdx] = null;
735 }
736
737 // mouseClickButtons is updated below, after MOUSE_CLICK is sent
738 }
739
740 // check if we receive mouseEvent from outside the window's bounds
741 // it can be either mouseDragged or mouseReleased
742 if (curWindowPeer == null) {
743 //TODO This can happen if this window is invisible. this is correct behavior in this case?
744 curWindowPeer = this;
745 }
746 if (targetPeer == null) {
747 //TODO This can happen if this window is invisible. this is correct behavior in this case?
748 targetPeer = this;
749 }
750
751
752 Point lp = targetPeer.windowToLocal(x, y, curWindowPeer);
753 if (targetPeer.isEnabled()) {
754 MouseEvent event = new MouseEvent(targetPeer.getTarget(), id,
755 when, modifiers, lp.x, lp.y,
756 screenX, screenY, clickCount,
757 popupTrigger, button);
758 postEvent(event);
759 }
760
761 if (id == MouseEvent.MOUSE_RELEASED) {
762 if ((mouseClickButtons & eventButtonMask) != 0
763 && targetPeer.isEnabled()) {
764 postEvent(new MouseEvent(targetPeer.getTarget(),
765 MouseEvent.MOUSE_CLICKED,
766 when, modifiers,
767 lp.x, lp.y, screenX, screenY,
768 clickCount, popupTrigger, button));
769 }
770 mouseClickButtons &= ~eventButtonMask;
771 }
772 }
773 notifyUpdateCursor();
774 }
775
776 public void dispatchMouseWheelEvent(long when, int x, int y, int modifiers,
777 int scrollType, int scrollAmount,
778 int wheelRotation, double preciseWheelRotation,
779 byte[] bdata)
780 {
781 // TODO: could we just use the last mouse event target here?
782 Rectangle r = getBounds();
783 // findPeerAt() expects parent coordinates
784 final LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
785 if (targetPeer == null || !targetPeer.isEnabled()) {
786 return;
787 }
788
789 Point lp = targetPeer.windowToLocal(x, y, this);
790 // TODO: fill "bdata" member of AWTEvent
791 // TODO: screenX/screenY
792 postEvent(new MouseWheelEvent(targetPeer.getTarget(),
793 MouseEvent.MOUSE_WHEEL,
794 when, modifiers,
795 lp.x, lp.y,
796 0, 0, /* screenX, Y */
797 0 /* clickCount */, false /* popupTrigger */,
798 scrollType, scrollAmount,
799 wheelRotation, preciseWheelRotation));
800 }
801
802 /*
803 * Called by the delegate when a key is pressed.
804 */
805 public void dispatchKeyEvent(int id, long when, int modifiers,
806 int keyCode, char keyChar, int keyLocation)
807 {
808 LWComponentPeer focusOwner =
809 LWKeyboardFocusManagerPeer.getInstance(getAppContext()).
810 getFocusOwner();
811
812 // Null focus owner may receive key event when
813 // application hides the focused window upon ESC press
814 // (AWT transfers/clears the focus owner) and pending ESC release
815 // may come to already hidden window. This check eliminates NPE.
816 if (focusOwner != null) {
817 KeyEvent event =
818 new KeyEvent(focusOwner.getTarget(), id, when, modifiers,
819 keyCode, keyChar, keyLocation);
820 focusOwner.postEvent(event);
821 }
822 }
823
824
825 // ---- UTILITY METHODS ---- //
826
827 private void postWindowStateChangedEvent(int newWindowState) {
828 if (getTarget() instanceof Frame) {
829 AWTAccessor.getFrameAccessor().setExtendedState(
830 (Frame)getTarget(), newWindowState);
831 }
832 WindowEvent stateChangedEvent = new WindowEvent(getTarget(),
833 WindowEvent.WINDOW_STATE_CHANGED,
834 windowState, newWindowState);
835 postEvent(stateChangedEvent);
836 windowState = newWindowState;
837 }
838
839 private static int getGraphicsConfigScreen(GraphicsConfiguration gc) {
840 // TODO: this method can be implemented in a more
841 // efficient way by forwarding to the delegate
842 GraphicsDevice gd = gc.getDevice();
843 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
844 GraphicsDevice[] gds = ge.getScreenDevices();
845 for (int i = 0; i < gds.length; i++) {
846 if (gds[i] == gd) {
847 return i;
848 }
849 }
850 // Should never happen if gc is a screen device config
851 return 0;
852 }
853
854 /*
855 * This method is called when window's graphics config is changed from
856 * the app code (e.g. when the window is made non-opaque) or when
857 * the window is moved to another screen by user.
858 *
859 * Returns true if the graphics config has been changed, false otherwise.
860 */
861 private boolean setGraphicsConfig(GraphicsConfiguration gc) {
862 synchronized (getStateLock()) {
863 if (graphicsConfig == gc) {
864 return false;
865 }
866 // If window's graphics config is changed from the app code, the
867 // config correspond to the same device as before; when the window
868 // is moved by user, graphicsDevice is updated in checkIfOnNewScreen().
869 // In either case, there's nothing to do with screenOn here
870 graphicsConfig = gc;
871 }
872 // SurfaceData is replaced later in updateGraphicsData()
873 return true;
874 }
875
876 private void checkIfOnNewScreen() {
877 GraphicsDevice newGraphicsDevice = platformWindow.getGraphicsDevice();
878 synchronized (getStateLock()) {
879 if (graphicsDevice == newGraphicsDevice) {
880 return;
881 }
882 graphicsDevice = newGraphicsDevice;
883 }
884
885 // TODO: DisplayChangedListener stuff
886 final GraphicsConfiguration newGC = newGraphicsDevice.getDefaultConfiguration();
887
888 if (!setGraphicsConfig(newGC)) return;
889
890 SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
891 public void run() {
892 AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC);
893 }
894 });
895 }
896
897 /**
898 * This method returns a back buffer Graphics to render all the
899 * peers to. After the peer is painted, the back buffer contents
900 * should be flushed to the screen. All the target painting
901 * (Component.paint() method) should be done directly to the screen.
902 */
903 protected final Graphics getOffscreenGraphics(Color fg, Color bg, Font f) {
904 final Image bb = getBackBuffer();
905 if (bb == null) {
906 return null;
907 }
908 if (fg == null) {
909 fg = SystemColor.windowText;
910 }
911 if (bg == null) {
912 bg = SystemColor.window;
913 }
914 if (f == null) {
915 f = DEFAULT_FONT;
916 }
917 final Graphics2D g = (Graphics2D) bb.getGraphics();
918 if (g != null) {
919 g.setColor(fg);
920 g.setBackground(bg);
921 g.setFont(f);
922 }
923 return g;
924 }
925
926 /*
927 * May be called by delegate to provide SD to Java2D code.
928 */
929 public SurfaceData getSurfaceData() {
930 synchronized (surfaceDataLock) {
931 return surfaceData;
932 }
933 }
934
935 private void replaceSurfaceData() {
936 replaceSurfaceData(backBufferCount, backBufferCaps);
937 }
938
939 private void replaceSurfaceData(int newBackBufferCount,
940 BufferCapabilities newBackBufferCaps) {
941 synchronized (surfaceDataLock) {
942 final SurfaceData oldData = getSurfaceData();
943 surfaceData = platformWindow.replaceSurfaceData();
944 // TODO: volatile image
945 // VolatileImage oldBB = backBuffer;
946 BufferedImage oldBB = backBuffer;
947 backBufferCount = newBackBufferCount;
948 backBufferCaps = newBackBufferCaps;
949 final Rectangle size = getSize();
950 if (getSurfaceData() != null && oldData != getSurfaceData()) {
951 clearBackground(size.width, size.height);
952 }
953 blitSurfaceData(oldData, getSurfaceData());
954
955 if (oldData != null && oldData != getSurfaceData()) {
956 // TODO: drop oldData for D3D/WGL pipelines
957 // This can only happen when this peer is being created
958 oldData.flush();
959 }
960
961 // TODO: volatile image
962 // backBuffer = (VolatileImage)delegate.createBackBuffer();
963 backBuffer = (BufferedImage) platformWindow.createBackBuffer();
964 if (backBuffer != null) {
965 Graphics g = backBuffer.getGraphics();
966 try {
967 Rectangle r = getBounds();
968 g.setColor(getBackground());
969 if (g instanceof Graphics2D) {
970 ((Graphics2D) g).setComposite(AlphaComposite.Src);
971 }
972 g.fillRect(0, 0, r.width, r.height);
973 if (oldBB != null) {
974 // Draw the old back buffer to the new one
975 g.drawImage(oldBB, 0, 0, null);
976 oldBB.flush();
977 }
978 } finally {
979 g.dispose();
980 }
981 }
982 }
983 }
984
985 private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) {
986 //TODO blit. proof-of-concept
987 if (src != dst && src != null && dst != null
988 && !(dst instanceof NullSurfaceData)
989 && !(src instanceof NullSurfaceData)
990 && src.getSurfaceType().equals(dst.getSurfaceType())) {
991 final Rectangle size = getSize();
992 final Blit blit = Blit.locate(src.getSurfaceType(),
993 CompositeType.Src,
994 dst.getSurfaceType());
995 if (blit != null) {
996 blit.Blit(src, dst, ((Graphics2D) getGraphics()).getComposite(),
997 getRegion(), 0, 0, 0, 0, size.width, size.height);
998 }
999 }
1000 }
1001
1002 public int getBackBufferCount() {
1003 return backBufferCount;
1004 }
1005
1006 public BufferCapabilities getBackBufferCaps() {
1007 return backBufferCaps;
1008 }
1009
1010 /*
1011 * Request the window insets from the delegate and compares it
1012 * with the current one. This method is mostly called by the
1013 * delegate, e.g. when the window state is changed and insets
1014 * should be recalculated.
1015 *
1016 * This method may be called on the toolkit thread.
1017 */
1018 public boolean updateInsets(Insets newInsets) {
1019 boolean changed = false;
1020 synchronized (getStateLock()) {
1021 changed = (insets.equals(newInsets));
1022 insets = newInsets;
1023 }
1024
1025 if (changed) {
1026 replaceSurfaceData();
1027 repaintPeer();
1028 }
1029
1030 return changed;
1031 }
1032
1033 public static LWWindowPeer getWindowUnderCursor() {
1034 return lastMouseEventPeer != null ? lastMouseEventPeer.getWindowPeerOrSelf() : null;
1035 }
1036
1037 public static LWComponentPeer<?, ?> getPeerUnderCursor() {
1038 return lastMouseEventPeer;
1039 }
1040
1041 /*
1042 * Requests platform to set native focus on a frame/dialog.
1043 * In case of a simple window, triggers appropriate java focus change.
1044 */
1045 public boolean requestWindowFocus(CausedFocusEvent.Cause cause) {
1046 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1047 focusLog.fine("requesting native focus to " + this);
1048 }
1049
1050 if (!focusAllowedFor()) {
1051 focusLog.fine("focus is not allowed");
1052 return false;
1053 }
1054
1055 if (platformWindow.rejectFocusRequest(cause)) {
1056 return false;
1057 }
1058
1059 Window currentActive = KeyboardFocusManager.
1060 getCurrentKeyboardFocusManager().getActiveWindow();
1061
1062 // Make the owner active window.
1063 if (isSimpleWindow()) {
1064 LWWindowPeer owner = getOwnerFrameDialog(this);
1065
1066 // If owner is not natively active, request native
1067 // activation on it w/o sending events up to java.
1068 if (owner != null && !owner.platformWindow.isActive()) {
1069 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1070 focusLog.fine("requesting native focus to the owner " + owner);
1071 }
1072 LWWindowPeer currentActivePeer = (currentActive != null ?
1073 (LWWindowPeer)currentActive.getPeer() : null);
1074
1075 // Ensure the opposite is natively active and suppress sending events.
1076 if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) {
1077 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1078 focusLog.fine("the opposite is " + currentActivePeer);
1079 }
1080 currentActivePeer.skipNextFocusChange = true;
1081 }
1082 owner.skipNextFocusChange = true;
1083
1084 owner.platformWindow.requestWindowFocus();
1085 }
1086
1087 // DKFM will synthesize all the focus/activation events correctly.
1088 changeFocusedWindow(true);
1089 return true;
1090
1091 // In case the toplevel is active but not focused, change focus directly,
1092 // as requesting native focus on it will not have effect.
1093 } else if (getTarget() == currentActive && !getTarget().hasFocus()) {
1094
1095 changeFocusedWindow(true);
1096 return true;
1097 }
1098 return platformWindow.requestWindowFocus();
1099 }
1100
1101 private boolean focusAllowedFor() {
1102 Window window = getTarget();
1103 // TODO: check if modal blocked
1104 return window.isVisible() && window.isEnabled() && isFocusableWindow();
1105 }
1106
1107 private boolean isFocusableWindow() {
1108 boolean focusable = getTarget().isFocusableWindow();
1109 if (isSimpleWindow()) {
1110 LWWindowPeer ownerPeer = getOwnerFrameDialog(this);
1111 if (ownerPeer == null) {
1112 return false;
1113 }
1114 return focusable && ownerPeer.getTarget().isFocusableWindow();
1115 }
1116 return focusable;
1117 }
1118
1119 public boolean isSimpleWindow() {
1120 Window window = getTarget();
1121 return !(window instanceof Dialog || window instanceof Frame);
1122 }
1123
1124 /*
1125 * Changes focused window on java level.
1126 */
1127 private void changeFocusedWindow(boolean becomesFocused) {
1128 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1129 focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this);
1130 }
1131 if (skipNextFocusChange) {
1132 focusLog.fine("skipping focus change");
1133 skipNextFocusChange = false;
1134 return;
1135 }
1136 if (!isFocusableWindow() && becomesFocused) {
1137 focusLog.fine("the window is not focusable");
1138 return;
1139 }
1140 if (becomesFocused) {
1141 synchronized (getPeerTreeLock()) {
1142 if (blocker != null) {
1143 if (focusLog.isLoggable(PlatformLogger.FINEST)) {
1144 focusLog.finest("the window is blocked by " + blocker);
1145 }
1146 return;
1147 }
1148 }
1149 }
1150
1151 LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer.
1152 getInstance(getAppContext());
1153
1154 Window oppositeWindow = becomesFocused ? manager.getCurrentFocusedWindow() : null;
1155
1156 // Note, the method is not called:
1157 // - when the opposite (gaining focus) window is an owned/owner window.
1158 // - for a simple window in any case.
1159 if (!becomesFocused &&
1160 (isGrabbing() || getOwnerFrameDialog(grabbingWindow) == this))
1161 {
1162 focusLog.fine("ungrabbing on " + grabbingWindow);
1163 // ungrab a simple window if its owner looses activation.
1164 grabbingWindow.ungrab();
1165 }
1166
1167 manager.setFocusedWindow(becomesFocused ? LWWindowPeer.this : null);
1168
1169 int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;
1170 WindowEvent windowEvent = new WindowEvent(getTarget(), eventID, oppositeWindow);
1171
1172 // TODO: wrap in SequencedEvent
1173 postEvent(windowEvent);
1174 }
1175
1176 static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) {
1177 Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1178 while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
1179 owner = owner.getOwner();
1180 }
1181 return owner != null ? (LWWindowPeer)owner.getPeer() : null;
1182 }
1183
1184 /**
1185 * Returns the foremost modal blocker of this window, or null.
1186 */
1187 public LWWindowPeer getBlocker() {
1188 synchronized (getPeerTreeLock()) {
1189 LWWindowPeer blocker = this.blocker;
1190 if (blocker == null) {
1191 return null;
1192 }
1193 while (blocker.blocker != null) {
1194 blocker = blocker.blocker;
1195 }
1196 return blocker;
1197 }
1198 }
1199
1200 public void enterFullScreenMode() {
1201 platformWindow.enterFullScreenMode();
1202 }
1203
1204 public void exitFullScreenMode() {
1205 platformWindow.exitFullScreenMode();
1206 }
1207
1208 public long getLayerPtr() {
1209 return getPlatformWindow().getLayerPtr();
1210 }
1211
1212 void grab() {
1213 if (grabbingWindow != null && !isGrabbing()) {
1214 grabbingWindow.ungrab();
1215 }
1216 grabbingWindow = this;
1217 }
1218
1219 void ungrab() {
1220 if (isGrabbing()) {
1221 grabbingWindow = null;
1222 postEvent(new UngrabEvent(getTarget()));
1223 }
1224 }
1225
1226 private boolean isGrabbing() {
1227 return this == grabbingWindow;
1228 }
1229
1230 @Override
1231 public String toString() {
1232 return super.toString() + " [target is " + getTarget() + "]";
1233 }
1234 }