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.java2d.pipe.Region;
41 import sun.util.logging.PlatformLogger;
42
43 public class LWWindowPeer
44 extends LWContainerPeer<Window, JComponent>
45 implements WindowPeer, FramePeer, DialogPeer, FullScreenCapable
46 {
47 public static enum PeerType {
48 SIMPLEWINDOW,
49 FRAME,
50 DIALOG,
51 EMBEDDEDFRAME
52 }
53
54 private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.lwawt.focus.LWWindowPeer");
55
56 private PlatformWindow platformWindow;
57
58 // Window bounds reported by the native system (as opposed to
59 // regular bounds inherited from LWComponentPeer which are
60 // requested by user and may haven't been applied yet because
61 // of asynchronous requests to the windowing system)
62 private int sysX;
63 private int sysY;
64 private int sysW;
65 private int sysH;
66
67 private static final int MINIMUM_WIDTH = 1;
68 private static final int MINIMUM_HEIGHT = 1;
69
70 private Insets insets = new Insets(0, 0, 0, 0);
71
72 private GraphicsDevice graphicsDevice;
73 private GraphicsConfiguration graphicsConfig;
74
75 private SurfaceData surfaceData;
76 private final Object surfaceDataLock = new Object();
77
78 private int backBufferCount;
79 private BufferCapabilities backBufferCaps;
80
81 // The back buffer is used for two purposes:
82 // 1. To render all the lightweight peers
83 // 2. To provide user with a BufferStrategy
84 // Need to check if a single back buffer can be used for both
85 // TODO: VolatileImage
86 // private VolatileImage backBuffer;
87 private volatile BufferedImage backBuffer;
88
89 private volatile int windowState = Frame.NORMAL;
90
91 // A peer where the last mouse event came to. Used to generate
92 // MOUSE_ENTERED/EXITED notifications and by cursor manager to
93 // find the component under cursor
94 private static volatile LWComponentPeer lastMouseEventPeer = null;
95
96 // Peers where all dragged/released events should come to,
97 // depending on what mouse button is being dragged according to Cocoa
98 private static LWComponentPeer mouseDownTarget[] = new LWComponentPeer[3];
99
100 // A bitmask that indicates what mouse buttons produce MOUSE_CLICKED events
101 // on MOUSE_RELEASE. Click events are only generated if there were no drag
102 // events between MOUSE_PRESSED and MOUSE_RELEASED for particular button
103 private static int mouseClickButtons = 0;
104
105 private volatile boolean isOpaque = true;
106
107 private static final Font DEFAULT_FONT = new Font("Lucida Grande", Font.PLAIN, 13);
108
109 private static LWWindowPeer grabbingWindow;
110
111 private volatile boolean skipNextFocusChange;
112
113 private static final Color nonOpaqueBackground = new Color(0, 0, 0, 0);
114
115 /**
116 * Current modal blocker or null.
117 *
118 * Synchronization: peerTreeLock.
119 */
120 private LWWindowPeer blocker;
121
122 public LWWindowPeer(Window target, PlatformComponent platformComponent,
123 PlatformWindow platformWindow)
124 {
125 super(target, platformComponent);
126 this.platformWindow = platformWindow;
127
128 Window owner = target.getOwner();
129 LWWindowPeer ownerPeer = (owner != null) ? (LWWindowPeer)owner.getPeer() : null;
130 PlatformWindow ownerDelegate = (ownerPeer != null) ? ownerPeer.getPlatformWindow() : null;
131
132 // The delegate.initialize() needs a non-null GC on X11.
133 GraphicsConfiguration gc = getTarget().getGraphicsConfiguration();
134 synchronized (getStateLock()) {
135 // graphicsConfig should be updated according to the real window
136 // bounds when the window is shown, see 4868278
137 this.graphicsConfig = gc;
138 }
139
140 if (!target.isFontSet()) {
141 target.setFont(DEFAULT_FONT);
142 }
143
144 if (!target.isBackgroundSet()) {
145 target.setBackground(SystemColor.window);
146 } else {
147 // first we check if user provided alpha for background. This is
148 // similar to what Apple's Java do.
149 // Since JDK7 we should rely on setOpacity() only.
150 // this.opacity = c.getAlpha();
151 }
152
153 if (!target.isForegroundSet()) {
154 target.setForeground(SystemColor.windowText);
155 // we should not call setForeground because it will call a repaint
156 // which the peer may not be ready to do yet.
157 }
158
159 platformWindow.initialize(target, this, ownerDelegate);
160 }
161
162 @Override
163 void initializeImpl() {
164 super.initializeImpl();
165 if (getTarget() instanceof Frame) {
166 setTitle(((Frame) getTarget()).getTitle());
167 setState(((Frame) getTarget()).getExtendedState());
168 } else if (getTarget() instanceof Dialog) {
169 setTitle(((Dialog) getTarget()).getTitle());
170 }
171
172 setAlwaysOnTop(getTarget().isAlwaysOnTop());
173 updateMinimumSize();
174
175 final Shape shape = getTarget().getShape();
176 if (shape != null) {
177 applyShape(Region.getInstance(shape, null));
178 }
179
180 final float opacity = getTarget().getOpacity();
181 if (opacity < 1.0f) {
182 setOpacity(opacity);
183 }
184
185 setOpaque(getTarget().isOpaque());
186
187 updateInsets(platformWindow.getInsets());
188 if (getSurfaceData() == null) {
189 replaceSurfaceData(false);
190 }
191 }
192
193 // Just a helper method
194 public PlatformWindow getPlatformWindow() {
195 return platformWindow;
196 }
197
198 @Override
199 protected LWWindowPeer getWindowPeerOrSelf() {
200 return this;
201 }
202
203 @Override
204 protected void initializeContainerPeer() {
205 // No-op as LWWindowPeer doesn't have any containerPeer
206 }
207
208 // ---- PEER METHODS ---- //
209
210 @Override
211 protected void disposeImpl() {
212 SurfaceData oldData = getSurfaceData();
213 synchronized (surfaceDataLock){
214 surfaceData = null;
215 }
216 if (oldData != null) {
217 oldData.invalidate();
218 }
219 if (isGrabbing()) {
220 ungrab();
221 }
222 destroyBuffers();
223 platformWindow.dispose();
224 super.disposeImpl();
225 }
226
227 @Override
228 protected void setVisibleImpl(final boolean visible) {
229 super.setVisibleImpl(visible);
230 // TODO: update graphicsConfig, see 4868278
231 platformWindow.setVisible(visible);
232 if (isSimpleWindow()) {
233 LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer.
234 getInstance(getAppContext());
235
236 if (visible) {
237 if (!getTarget().isAutoRequestFocus()) {
238 return;
239 } else {
240 requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
241 }
242 // Focus the owner in case this window is focused.
243 } else if (manager.getCurrentFocusedWindow() == getTarget()) {
244 // Transfer focus to the owner.
245 LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this);
246 if (owner != null) {
247 owner.requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
248 }
249 }
250 }
251 }
252
253 @Override
254 public GraphicsConfiguration getGraphicsConfiguration() {
255 return graphicsConfig;
256 }
257
258 @Override
259 public boolean updateGraphicsData(GraphicsConfiguration gc) {
260 setGraphicsConfig(gc);
261 return false;
262 }
263
264 protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) {
265 if (getSurfaceData() == null) {
266 return null;
267 }
268 if (fg == null) {
269 fg = SystemColor.windowText;
270 }
271 if (bg == null) {
272 bg = SystemColor.window;
273 }
274 if (f == null) {
275 f = DEFAULT_FONT;
276 }
277 return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f));
278 }
279
280 @Override
281 public void createBuffers(int numBuffers, BufferCapabilities caps)
282 throws AWTException
283 {
284 try {
285 // Assume this method is never called with numBuffers <= 1, as 0 is
286 // unsupported, and 1 corresponds to a SingleBufferStrategy which
287 // doesn't depend on the peer. Screen is considered as a separate
288 // "buffer", that's why numBuffers - 1
289 assert numBuffers > 1;
290
291 replaceSurfaceData(numBuffers - 1, caps, false);
292 } catch (InvalidPipeException z) {
293 throw new AWTException(z.toString());
294 }
295 }
296
297 @Override
298 public final Image getBackBuffer() {
299 synchronized (getStateLock()) {
300 return backBuffer;
301 }
302 }
303
304 @Override
305 public void flip(int x1, int y1, int x2, int y2,
306 BufferCapabilities.FlipContents flipAction)
307 {
308 platformWindow.flip(x1, y1, x2, y2, flipAction);
309 }
310
311 @Override
312 public final void destroyBuffers() {
313 final Image oldBB = getBackBuffer();
314 synchronized (getStateLock()) {
315 backBuffer = null;
316 }
317 if (oldBB != null) {
318 oldBB.flush();
319 }
320 }
321
322 @Override
323 public void setBounds(int x, int y, int w, int h, int op) {
324 if ((op & SET_CLIENT_SIZE) != 0) {
325 // SET_CLIENT_SIZE is only applicable to window peers, so handle it here
326 // instead of pulling 'insets' field up to LWComponentPeer
327 // no need to add insets since Window's notion of width and height includes insets.
328 op &= ~SET_CLIENT_SIZE;
329 op |= SET_SIZE;
330 }
331
332 if (w < MINIMUM_WIDTH) {
333 w = MINIMUM_WIDTH;
334 }
335 if (h < MINIMUM_HEIGHT) {
336 h = MINIMUM_HEIGHT;
337 }
338
339 // Don't post ComponentMoved/Resized and Paint events
340 // until we've got a notification from the delegate
341 setBounds(x, y, w, h, op, false, false);
342 // Get updated bounds, so we don't have to handle 'op' here manually
343 Rectangle r = getBounds();
344 platformWindow.setBounds(r.x, r.y, r.width, r.height);
345 }
346
347 @Override
348 public Point getLocationOnScreen() {
349 return platformWindow.getLocationOnScreen();
350 }
351
352 /**
353 * Overridden from LWContainerPeer to return the correct insets.
354 * Insets are queried from the delegate and are kept up to date by
355 * requiering when needed (i.e. when the window geometry is changed).
356 */
357 @Override
358 public Insets getInsets() {
359 synchronized (getStateLock()) {
360 return insets;
361 }
362 }
363
364 @Override
365 public FontMetrics getFontMetrics(Font f) {
366 // TODO: check for "use platform metrics" settings
367 return platformWindow.getFontMetrics(f);
368 }
369
370 @Override
371 public void toFront() {
372 platformWindow.toFront();
373 }
374
375 @Override
376 public void toBack() {
377 platformWindow.toBack();
378 }
379
380 @Override
381 public void setZOrder(ComponentPeer above) {
382 throw new RuntimeException("not implemented");
383 }
384
385 @Override
386 public void setAlwaysOnTop(boolean value) {
387 platformWindow.setAlwaysOnTop(value);
388 }
389
390 @Override
391 public void updateFocusableWindowState() {
392 platformWindow.updateFocusableWindowState();
393 }
394
395 @Override
396 public void setModalBlocked(Dialog blocker, boolean blocked) {
397 synchronized (getPeerTreeLock()) {
398 this.blocker = blocked ? (LWWindowPeer)blocker.getPeer() : null;
399 }
400
401 platformWindow.setModalBlocked(blocked);
402 }
403
404 @Override
405 public void updateMinimumSize() {
406 Dimension d = null;
407 if (getTarget().isMinimumSizeSet()) {
408 d = getTarget().getMinimumSize();
409 }
410 if (d == null) {
411 d = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT);
412 }
413 platformWindow.setMinimumSize(d.width, d.height);
414 }
415
416 @Override
417 public void updateIconImages() {
418 getPlatformWindow().updateIconImages();
419 }
420
421 @Override
422 public void setOpacity(float opacity) {
423 getPlatformWindow().setOpacity(opacity);
424 repaintPeer();
425 }
426
427 @Override
428 public final void setOpaque(final boolean isOpaque) {
429 if (this.isOpaque != isOpaque) {
430 this.isOpaque = isOpaque;
431 updateOpaque();
432 }
433 }
434
435 private void updateOpaque() {
436 getPlatformWindow().setOpaque(!isTranslucent());
437 replaceSurfaceData(false);
438 repaintPeer();
439 }
440
441 @Override
442 public void updateWindow() {
443 }
444
445 public final boolean isTranslucent() {
446 synchronized (getStateLock()) {
447 return !isOpaque || isShaped();
448 }
449 }
450
451 @Override
452 final void applyShapeImpl(final Region shape) {
453 super.applyShapeImpl(shape);
454 updateOpaque();
455 }
456
457 @Override
458 public void repositionSecurityWarning() {
459 throw new RuntimeException("not implemented");
460 }
461
462 // ---- FRAME PEER METHODS ---- //
463
464 @Override // FramePeer and DialogPeer
465 public void setTitle(String title) {
466 platformWindow.setTitle(title == null ? "" : title);
467 }
468
469 @Override
470 public void setMenuBar(MenuBar mb) {
471 platformWindow.setMenuBar(mb);
472 }
473
474 @Override // FramePeer and DialogPeer
475 public void setResizable(boolean resizable) {
476 platformWindow.setResizable(resizable);
477 }
478
479 @Override
480 public void setState(int state) {
481 platformWindow.setWindowState(state);
482 }
483
484 @Override
485 public int getState() {
486 return windowState;
487 }
488
489 @Override
490 public void setMaximizedBounds(Rectangle bounds) {
491 // TODO: not implemented
492 }
493
494 @Override
495 public void setBoundsPrivate(int x, int y, int width, int height) {
496 setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK);
497 }
498
499 @Override
500 public Rectangle getBoundsPrivate() {
501 throw new RuntimeException("not implemented");
502 }
503
504 // ---- DIALOG PEER METHODS ---- //
505
506 @Override
507 public void blockWindows(List<Window> windows) {
508 //TODO: LWX will probably need some collectJavaToplevels to speed this up
509 for (Window w : windows) {
510 WindowPeer wp = (WindowPeer)w.getPeer();
511 if (wp != null) {
512 wp.setModalBlocked((Dialog)getTarget(), true);
513 }
514 }
515 }
516
517 // ---- PEER NOTIFICATIONS ---- //
518
519 public void notifyIconify(boolean iconify) {
520 //The toplevel target is Frame and states are applicable to it.
521 //Otherwise, the target is Window and it don't have state property.
522 //Hopefully, no such events are posted in the queue so consider the
523 //target as Frame in all cases.
524
525 // REMIND: should we send it anyway if the state not changed since last
526 // time?
527 WindowEvent iconifyEvent = new WindowEvent(getTarget(),
528 iconify ? WindowEvent.WINDOW_ICONIFIED
529 : WindowEvent.WINDOW_DEICONIFIED);
530 postEvent(iconifyEvent);
531
532 int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL;
533 postWindowStateChangedEvent(newWindowState);
534
535 // REMIND: RepaintManager doesn't repaint iconified windows and
536 // hence ignores any repaint request during deiconification.
537 // So, we need to repaint window explicitly when it becomes normal.
538 if (!iconify) {
539 repaintPeer();
540 }
541 }
542
543 public void notifyZoom(boolean isZoomed) {
544 int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL;
545 postWindowStateChangedEvent(newWindowState);
546 }
547
548 /**
549 * Called by the delegate when any part of the window should be repainted.
550 */
551 public void notifyExpose(final int x, final int y, final int w, final int h) {
552 // TODO: there's a serious problem with Swing here: it handles
553 // the exposition internally, so SwingPaintEventDispatcher always
554 // return null from createPaintEvent(). However, we flush the
555 // back buffer here unconditionally, so some flickering may appear.
556 // A possible solution is to split postPaintEvent() into two parts,
557 // and override that part which is only called after if
558 // createPaintEvent() returned non-null value and flush the buffer
559 // from the overridden method
560 flushOnscreenGraphics();
561 repaintPeer(new Rectangle(x, y, w, h));
562 }
563
564 /**
565 * Called by the delegate when this window is moved/resized by user.
566 * There's no notifyReshape() in LWComponentPeer as the only
567 * components which could be resized by user are top-level windows.
568 */
569 public final void notifyReshape(int x, int y, int w, int h) {
570 boolean moved = false;
571 boolean resized = false;
572 synchronized (getStateLock()) {
573 moved = (x != sysX) || (y != sysY);
574 resized = (w != sysW) || (h != sysH);
575 sysX = x;
576 sysY = y;
577 sysW = w;
578 sysH = h;
579 }
580
581 // Check if anything changed
582 if (!moved && !resized) {
583 return;
584 }
585 // First, update peer's bounds
586 setBounds(x, y, w, h, SET_BOUNDS, false, false);
587
588 // Second, update the graphics config and surface data
589 checkIfOnNewScreen();
590 if (resized) {
591 replaceSurfaceData();
592 flushOnscreenGraphics();
593 }
594
595 // Third, COMPONENT_MOVED/COMPONENT_RESIZED events
596 if (moved) {
597 handleMove(x, y, true);
598 }
599 if (resized) {
600 handleResize(w, h,true);
601 }
602 }
603
604 private void clearBackground(final int w, final int h) {
605 final Graphics g = getOnscreenGraphics(getForeground(), getBackground(),
606 getFont());
607 if (g != null) {
608 try {
609 if (g instanceof Graphics2D) {
610 ((Graphics2D) g).setComposite(AlphaComposite.Src);
611 }
612 if (isTranslucent()) {
613 g.setColor(nonOpaqueBackground);
614 g.fillRect(0, 0, w, h);
615 }
616 if (g instanceof SunGraphics2D) {
617 SG2DConstraint((SunGraphics2D) g, getRegion());
618 }
619 g.setColor(getBackground());
620 g.fillRect(0, 0, w, h);
621 } finally {
622 g.dispose();
623 }
624 }
625 }
626
627 public void notifyUpdateCursor() {
628 getLWToolkit().getCursorManager().updateCursorLater(this);
629 }
630
631 public void notifyActivation(boolean activation) {
632 changeFocusedWindow(activation);
633 }
634
635 // MouseDown in non-client area
636 public void notifyNCMouseDown() {
637 // Ungrab except for a click on a Dialog with the grabbing owner
638 if (grabbingWindow != null &&
639 grabbingWindow != getOwnerFrameDialog(this))
640 {
641 grabbingWindow.ungrab();
642 }
643 }
644
645 // ---- EVENTS ---- //
646
647 /*
648 * Called by the delegate to dispatch the event to Java. Event
649 * coordinates are relative to non-client window are, i.e. the top-left
650 * point of the client area is (insets.top, insets.left).
651 */
652 public void dispatchMouseEvent(int id, long when, int button,
653 int x, int y, int screenX, int screenY,
654 int modifiers, int clickCount, boolean popupTrigger,
655 byte[] bdata)
656 {
657 // TODO: fill "bdata" member of AWTEvent
658 Rectangle r = getBounds();
659 // findPeerAt() expects parent coordinates
660 LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
661 LWWindowPeer lastWindowPeer =
662 (lastMouseEventPeer != null) ? lastMouseEventPeer.getWindowPeerOrSelf() : null;
663 LWWindowPeer curWindowPeer =
664 (targetPeer != null) ? targetPeer.getWindowPeerOrSelf() : null;
665
666 if (id == MouseEvent.MOUSE_EXITED) {
667 // Sometimes we may get MOUSE_EXITED after lastMouseEventPeer is switched
668 // to a peer from another window. So we must first check if this peer is
669 // the same as lastWindowPeer
670 if (lastWindowPeer == this) {
671 if (isEnabled()) {
672 Point lp = lastMouseEventPeer.windowToLocal(x, y,
673 lastWindowPeer);
674 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
675 MouseEvent.MOUSE_EXITED, when,
676 modifiers, lp.x, lp.y, screenX,
677 screenY, clickCount, popupTrigger,
678 button));
679 }
680 lastMouseEventPeer = null;
681 }
682 } else {
683 if (targetPeer != lastMouseEventPeer) {
684
685 if (id != MouseEvent.MOUSE_DRAGGED || lastMouseEventPeer == null) {
686 // lastMouseEventPeer may be null if mouse was out of Java windows
687 if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) {
688 // Sometimes, MOUSE_EXITED is not sent by delegate (or is sent a bit
689 // later), in which case lastWindowPeer is another window
690 if (lastWindowPeer != this) {
691 Point oldp = lastMouseEventPeer.windowToLocal(x, y, lastWindowPeer);
692 // Additionally translate from this to lastWindowPeer coordinates
693 Rectangle lr = lastWindowPeer.getBounds();
694 oldp.x += r.x - lr.x;
695 oldp.y += r.y - lr.y;
696 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
697 MouseEvent.MOUSE_EXITED,
698 when, modifiers,
699 oldp.x, oldp.y, screenX, screenY,
700 clickCount, popupTrigger, button));
701 } else {
702 Point oldp = lastMouseEventPeer.windowToLocal(x, y, this);
703 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
704 MouseEvent.MOUSE_EXITED,
705 when, modifiers,
706 oldp.x, oldp.y, screenX, screenY,
707 clickCount, popupTrigger, button));
708 }
709 }
710 if (targetPeer != null && targetPeer.isEnabled() && id != MouseEvent.MOUSE_ENTERED) {
711 Point newp = targetPeer.windowToLocal(x, y, curWindowPeer);
712 postEvent(new MouseEvent(targetPeer.getTarget(),
713 MouseEvent.MOUSE_ENTERED,
714 when, modifiers,
715 newp.x, newp.y, screenX, screenY,
716 clickCount, popupTrigger, button));
717 }
718 }
719 lastMouseEventPeer = targetPeer;
720 }
721 // TODO: fill "bdata" member of AWTEvent
722
723 int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0;
724 int otherButtonsPressed = modifiers & ~eventButtonMask;
725
726 // For pressed/dragged/released events OS X treats other
727 // mouse buttons as if they were BUTTON2, so we do the same
728 int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1;
729
730 // MOUSE_ENTERED/EXITED are generated for the components strictly under
731 // mouse even when dragging. That's why we first update lastMouseEventPeer
732 // based on initial targetPeer value and only then recalculate targetPeer
733 // for MOUSE_DRAGGED/RELEASED events
734 if (id == MouseEvent.MOUSE_PRESSED) {
735
736 // Ungrab only if this window is not an owned window of the grabbing one.
737 if (!isGrabbing() && grabbingWindow != null &&
738 grabbingWindow != getOwnerFrameDialog(this))
739 {
740 grabbingWindow.ungrab();
741 }
742 if (otherButtonsPressed == 0) {
743 mouseClickButtons = eventButtonMask;
744 } else {
745 mouseClickButtons |= eventButtonMask;
746 }
747
748 mouseDownTarget[targetIdx] = targetPeer;
749 } else if (id == MouseEvent.MOUSE_DRAGGED) {
750 // Cocoa dragged event has the information about which mouse
751 // button is being dragged. Use it to determine the peer that
752 // should receive the dragged event.
753 targetPeer = mouseDownTarget[targetIdx];
754 mouseClickButtons &= ~modifiers;
755 } else if (id == MouseEvent.MOUSE_RELEASED) {
756 // TODO: currently, mouse released event goes to the same component
757 // that received corresponding mouse pressed event. For most cases,
758 // it's OK, however, we need to make sure that our behavior is consistent
759 // with 1.6 for cases where component in question have been
760 // hidden/removed in between of mouse pressed/released events.
761 targetPeer = mouseDownTarget[targetIdx];
762
763 if ((modifiers & eventButtonMask) == 0) {
764 mouseDownTarget[targetIdx] = null;
765 }
766
767 // mouseClickButtons is updated below, after MOUSE_CLICK is sent
768 }
769
770 // check if we receive mouseEvent from outside the window's bounds
771 // it can be either mouseDragged or mouseReleased
772 if (curWindowPeer == null) {
773 //TODO This can happen if this window is invisible. this is correct behavior in this case?
774 curWindowPeer = this;
775 }
776 if (targetPeer == null) {
777 //TODO This can happen if this window is invisible. this is correct behavior in this case?
778 targetPeer = this;
779 }
780
781
782 Point lp = targetPeer.windowToLocal(x, y, curWindowPeer);
783 if (targetPeer.isEnabled()) {
784 MouseEvent event = new MouseEvent(targetPeer.getTarget(), id,
785 when, modifiers, lp.x, lp.y,
786 screenX, screenY, clickCount,
787 popupTrigger, button);
788 postEvent(event);
789 }
790
791 if (id == MouseEvent.MOUSE_RELEASED) {
792 if ((mouseClickButtons & eventButtonMask) != 0
793 && targetPeer.isEnabled()) {
794 postEvent(new MouseEvent(targetPeer.getTarget(),
795 MouseEvent.MOUSE_CLICKED,
796 when, modifiers,
797 lp.x, lp.y, screenX, screenY,
798 clickCount, popupTrigger, button));
799 }
800 mouseClickButtons &= ~eventButtonMask;
801 }
802 }
803 notifyUpdateCursor();
804 }
805
806 public void dispatchMouseWheelEvent(long when, int x, int y, int modifiers,
807 int scrollType, int scrollAmount,
808 int wheelRotation, double preciseWheelRotation,
809 byte[] bdata)
810 {
811 // TODO: could we just use the last mouse event target here?
812 Rectangle r = getBounds();
813 // findPeerAt() expects parent coordinates
814 final LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
815 if (targetPeer == null || !targetPeer.isEnabled()) {
816 return;
817 }
818
819 Point lp = targetPeer.windowToLocal(x, y, this);
820 // TODO: fill "bdata" member of AWTEvent
821 // TODO: screenX/screenY
822 postEvent(new MouseWheelEvent(targetPeer.getTarget(),
823 MouseEvent.MOUSE_WHEEL,
824 when, modifiers,
825 lp.x, lp.y,
826 0, 0, /* screenX, Y */
827 0 /* clickCount */, false /* popupTrigger */,
828 scrollType, scrollAmount,
829 wheelRotation, preciseWheelRotation));
830 }
831
832 /*
833 * Called by the delegate when a key is pressed.
834 */
835 public void dispatchKeyEvent(int id, long when, int modifiers,
836 int keyCode, char keyChar, int keyLocation)
837 {
838 LWComponentPeer focusOwner =
839 LWKeyboardFocusManagerPeer.getInstance(getAppContext()).
840 getFocusOwner();
841
842 // Null focus owner may receive key event when
843 // application hides the focused window upon ESC press
844 // (AWT transfers/clears the focus owner) and pending ESC release
845 // may come to already hidden window. This check eliminates NPE.
846 if (focusOwner != null) {
847 KeyEvent event =
848 new KeyEvent(focusOwner.getTarget(), id, when, modifiers,
849 keyCode, keyChar, keyLocation);
850 focusOwner.postEvent(event);
851 }
852 }
853
854
855 // ---- UTILITY METHODS ---- //
856
857 private void postWindowStateChangedEvent(int newWindowState) {
858 if (getTarget() instanceof Frame) {
859 AWTAccessor.getFrameAccessor().setExtendedState(
860 (Frame)getTarget(), newWindowState);
861 }
862 WindowEvent stateChangedEvent = new WindowEvent(getTarget(),
863 WindowEvent.WINDOW_STATE_CHANGED,
864 windowState, newWindowState);
865 postEvent(stateChangedEvent);
866 windowState = newWindowState;
867 }
868
869 private static int getGraphicsConfigScreen(GraphicsConfiguration gc) {
870 // TODO: this method can be implemented in a more
871 // efficient way by forwarding to the delegate
872 GraphicsDevice gd = gc.getDevice();
873 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
874 GraphicsDevice[] gds = ge.getScreenDevices();
875 for (int i = 0; i < gds.length; i++) {
876 if (gds[i] == gd) {
877 return i;
878 }
879 }
880 // Should never happen if gc is a screen device config
881 return 0;
882 }
883
884 /*
885 * This method is called when window's graphics config is changed from
886 * the app code (e.g. when the window is made non-opaque) or when
887 * the window is moved to another screen by user.
888 *
889 * Returns true if the graphics config has been changed, false otherwise.
890 */
891 private boolean setGraphicsConfig(GraphicsConfiguration gc) {
892 synchronized (getStateLock()) {
893 if (graphicsConfig == gc) {
894 return false;
895 }
896 // If window's graphics config is changed from the app code, the
897 // config correspond to the same device as before; when the window
898 // is moved by user, graphicsDevice is updated in checkIfOnNewScreen().
899 // In either case, there's nothing to do with screenOn here
900 graphicsConfig = gc;
901 }
902 // SurfaceData is replaced later in updateGraphicsData()
903 return true;
904 }
905
906 private void checkIfOnNewScreen() {
907 GraphicsDevice newGraphicsDevice = platformWindow.getGraphicsDevice();
908 synchronized (getStateLock()) {
909 if (graphicsDevice == newGraphicsDevice) {
910 return;
911 }
912 graphicsDevice = newGraphicsDevice;
913 }
914
915 // TODO: DisplayChangedListener stuff
916 final GraphicsConfiguration newGC = newGraphicsDevice.getDefaultConfiguration();
917
918 if (!setGraphicsConfig(newGC)) return;
919
920 SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
921 public void run() {
922 AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC);
923 }
924 });
925 }
926
927 /*
928 * May be called by delegate to provide SD to Java2D code.
929 */
930 public SurfaceData getSurfaceData() {
931 synchronized (surfaceDataLock) {
932 return surfaceData;
933 }
934 }
935
936 private void replaceSurfaceData() {
937 replaceSurfaceData(true);
938 }
939
940 private void replaceSurfaceData(boolean blit) {
941 replaceSurfaceData(backBufferCount, backBufferCaps, blit);
942 }
943
944 private void replaceSurfaceData(int newBackBufferCount,
945 BufferCapabilities newBackBufferCaps,
946 boolean blit) {
947 synchronized (surfaceDataLock) {
948 final SurfaceData oldData = getSurfaceData();
949 surfaceData = platformWindow.replaceSurfaceData();
950 // TODO: volatile image
951 // VolatileImage oldBB = backBuffer;
952 BufferedImage oldBB = backBuffer;
953 backBufferCount = newBackBufferCount;
954 backBufferCaps = newBackBufferCaps;
955 final Rectangle size = getSize();
956 if (getSurfaceData() != null && oldData != getSurfaceData()) {
957 clearBackground(size.width, size.height);
958 }
959
960 if (blit) {
961 blitSurfaceData(oldData, getSurfaceData());
962 }
963
964 if (oldData != null && oldData != getSurfaceData()) {
965 // TODO: drop oldData for D3D/WGL pipelines
966 // This can only happen when this peer is being created
967 oldData.flush();
968 }
969
970 // TODO: volatile image
971 // backBuffer = (VolatileImage)delegate.createBackBuffer();
972 backBuffer = (BufferedImage) platformWindow.createBackBuffer();
973 if (backBuffer != null) {
974 Graphics g = backBuffer.getGraphics();
975 try {
976 Rectangle r = getBounds();
977 if (g instanceof Graphics2D) {
978 ((Graphics2D) g).setComposite(AlphaComposite.Src);
979 }
980 g.setColor(nonOpaqueBackground);
981 g.fillRect(0, 0, r.width, r.height);
982 if (g instanceof SunGraphics2D) {
983 SG2DConstraint((SunGraphics2D) g, getRegion());
984 }
985 g.setColor(getBackground());
986 g.fillRect(0, 0, r.width, r.height);
987 if (oldBB != null) {
988 // Draw the old back buffer to the new one
989 g.drawImage(oldBB, 0, 0, null);
990 oldBB.flush();
991 }
992 } finally {
993 g.dispose();
994 }
995 }
996 }
997 }
998
999 private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) {
1000 //TODO blit. proof-of-concept
1001 if (src != dst && src != null && dst != null
1002 && !(dst instanceof NullSurfaceData)
1003 && !(src instanceof NullSurfaceData)
1004 && src.getSurfaceType().equals(dst.getSurfaceType())) {
1005 final Rectangle size = getSize();
1006 final Blit blit = Blit.locate(src.getSurfaceType(),
1007 CompositeType.Src,
1008 dst.getSurfaceType());
1009 if (blit != null) {
1010 blit.Blit(src, dst, AlphaComposite.Src,
1011 getRegion(), 0, 0, 0, 0, size.width, size.height);
1012 }
1013 }
1014 }
1015
1016 public int getBackBufferCount() {
1017 return backBufferCount;
1018 }
1019
1020 public BufferCapabilities getBackBufferCaps() {
1021 return backBufferCaps;
1022 }
1023
1024 /*
1025 * Request the window insets from the delegate and compares it
1026 * with the current one. This method is mostly called by the
1027 * delegate, e.g. when the window state is changed and insets
1028 * should be recalculated.
1029 *
1030 * This method may be called on the toolkit thread.
1031 */
1032 public boolean updateInsets(Insets newInsets) {
1033 boolean changed = false;
1034 synchronized (getStateLock()) {
1035 changed = (insets.equals(newInsets));
1036 insets = newInsets;
1037 }
1038
1039 if (changed) {
1040 replaceSurfaceData();
1041 repaintPeer();
1042 }
1043
1044 return changed;
1045 }
1046
1047 public static LWWindowPeer getWindowUnderCursor() {
1048 return lastMouseEventPeer != null ? lastMouseEventPeer.getWindowPeerOrSelf() : null;
1049 }
1050
1051 public static LWComponentPeer<?, ?> getPeerUnderCursor() {
1052 return lastMouseEventPeer;
1053 }
1054
1055 /*
1056 * Requests platform to set native focus on a frame/dialog.
1057 * In case of a simple window, triggers appropriate java focus change.
1058 */
1059 public boolean requestWindowFocus(CausedFocusEvent.Cause cause) {
1060 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1061 focusLog.fine("requesting native focus to " + this);
1062 }
1063
1064 if (!focusAllowedFor()) {
1065 focusLog.fine("focus is not allowed");
1066 return false;
1067 }
1068
1069 if (platformWindow.rejectFocusRequest(cause)) {
1070 return false;
1071 }
1072
1073 Window currentActive = KeyboardFocusManager.
1074 getCurrentKeyboardFocusManager().getActiveWindow();
1075
1076 // Make the owner active window.
1077 if (isSimpleWindow()) {
1078 LWWindowPeer owner = getOwnerFrameDialog(this);
1079
1080 // If owner is not natively active, request native
1081 // activation on it w/o sending events up to java.
1082 if (owner != null && !owner.platformWindow.isActive()) {
1083 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1084 focusLog.fine("requesting native focus to the owner " + owner);
1085 }
1086 LWWindowPeer currentActivePeer = (currentActive != null ?
1087 (LWWindowPeer)currentActive.getPeer() : null);
1088
1089 // Ensure the opposite is natively active and suppress sending events.
1090 if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) {
1091 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1092 focusLog.fine("the opposite is " + currentActivePeer);
1093 }
1094 currentActivePeer.skipNextFocusChange = true;
1095 }
1096 owner.skipNextFocusChange = true;
1097
1098 owner.platformWindow.requestWindowFocus();
1099 }
1100
1101 // DKFM will synthesize all the focus/activation events correctly.
1102 changeFocusedWindow(true);
1103 return true;
1104
1105 // In case the toplevel is active but not focused, change focus directly,
1106 // as requesting native focus on it will not have effect.
1107 } else if (getTarget() == currentActive && !getTarget().hasFocus()) {
1108
1109 changeFocusedWindow(true);
1110 return true;
1111 }
1112 return platformWindow.requestWindowFocus();
1113 }
1114
1115 private boolean focusAllowedFor() {
1116 Window window = getTarget();
1117 // TODO: check if modal blocked
1118 return window.isVisible() && window.isEnabled() && isFocusableWindow();
1119 }
1120
1121 private boolean isFocusableWindow() {
1122 boolean focusable = getTarget().isFocusableWindow();
1123 if (isSimpleWindow()) {
1124 LWWindowPeer ownerPeer = getOwnerFrameDialog(this);
1125 if (ownerPeer == null) {
1126 return false;
1127 }
1128 return focusable && ownerPeer.getTarget().isFocusableWindow();
1129 }
1130 return focusable;
1131 }
1132
1133 public boolean isSimpleWindow() {
1134 Window window = getTarget();
1135 return !(window instanceof Dialog || window instanceof Frame);
1136 }
1137
1138 /*
1139 * Changes focused window on java level.
1140 */
1141 private void changeFocusedWindow(boolean becomesFocused) {
1142 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1143 focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this);
1144 }
1145 if (skipNextFocusChange) {
1146 focusLog.fine("skipping focus change");
1147 skipNextFocusChange = false;
1148 return;
1149 }
1150 if (!isFocusableWindow() && becomesFocused) {
1151 focusLog.fine("the window is not focusable");
1152 return;
1153 }
1154 if (becomesFocused) {
1155 synchronized (getPeerTreeLock()) {
1156 if (blocker != null) {
1157 if (focusLog.isLoggable(PlatformLogger.FINEST)) {
1158 focusLog.finest("the window is blocked by " + blocker);
1159 }
1160 return;
1161 }
1162 }
1163 }
1164
1165 LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer.
1166 getInstance(getAppContext());
1167
1168 Window oppositeWindow = becomesFocused ? manager.getCurrentFocusedWindow() : null;
1169
1170 // Note, the method is not called:
1171 // - when the opposite (gaining focus) window is an owned/owner window.
1172 // - for a simple window in any case.
1173 if (!becomesFocused &&
1174 (isGrabbing() || getOwnerFrameDialog(grabbingWindow) == this))
1175 {
1176 focusLog.fine("ungrabbing on " + grabbingWindow);
1177 // ungrab a simple window if its owner looses activation.
1178 grabbingWindow.ungrab();
1179 }
1180
1181 manager.setFocusedWindow(becomesFocused ? LWWindowPeer.this : null);
1182
1183 int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;
1184 WindowEvent windowEvent = new WindowEvent(getTarget(), eventID, oppositeWindow);
1185
1186 // TODO: wrap in SequencedEvent
1187 postEvent(windowEvent);
1188 }
1189
1190 static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) {
1191 Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1192 while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
1193 owner = owner.getOwner();
1194 }
1195 return owner != null ? (LWWindowPeer)owner.getPeer() : null;
1196 }
1197
1198 /**
1199 * Returns the foremost modal blocker of this window, or null.
1200 */
1201 public LWWindowPeer getBlocker() {
1202 synchronized (getPeerTreeLock()) {
1203 LWWindowPeer blocker = this.blocker;
1204 if (blocker == null) {
1205 return null;
1206 }
1207 while (blocker.blocker != null) {
1208 blocker = blocker.blocker;
1209 }
1210 return blocker;
1211 }
1212 }
1213
1214 public void enterFullScreenMode() {
1215 platformWindow.enterFullScreenMode();
1216 }
1217
1218 public void exitFullScreenMode() {
1219 platformWindow.exitFullScreenMode();
1220 }
1221
1222 public long getLayerPtr() {
1223 return getPlatformWindow().getLayerPtr();
1224 }
1225
1226 void grab() {
1227 if (grabbingWindow != null && !isGrabbing()) {
1228 grabbingWindow.ungrab();
1229 }
1230 grabbingWindow = this;
1231 }
1232
1233 void ungrab() {
1234 if (isGrabbing()) {
1235 grabbingWindow = null;
1236 postEvent(new UngrabEvent(getTarget()));
1237 }
1238 }
1239
1240 private boolean isGrabbing() {
1241 return this == grabbingWindow;
1242 }
1243
1244 @Override
1245 public String toString() {
1246 return super.toString() + " [target is " + getTarget() + "]";
1247 }
1248 }