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 // check that the mouse is over the window
92 private volatile boolean isMouseOver = false;
93
94 // A peer where the last mouse event came to. Used by cursor manager to
95 // find the component under cursor
96 private static volatile LWComponentPeer lastCommonMouseEventPeer = null;
97
98 // A peer where the last mouse event came to. Used to generate
99 // MOUSE_ENTERED/EXITED notifications
100 private volatile LWComponentPeer lastMouseEventPeer;
101
102 // Peers where all dragged/released events should come to,
103 // depending on what mouse button is being dragged according to Cocoa
104 private static LWComponentPeer mouseDownTarget[] = new LWComponentPeer[3];
105
106 // A bitmask that indicates what mouse buttons produce MOUSE_CLICKED events
107 // on MOUSE_RELEASE. Click events are only generated if there were no drag
108 // events between MOUSE_PRESSED and MOUSE_RELEASED for particular button
109 private static int mouseClickButtons = 0;
110
111 private volatile boolean isOpaque = true;
112
113 private static final Font DEFAULT_FONT = new Font("Lucida Grande", Font.PLAIN, 13);
114
115 private static LWWindowPeer grabbingWindow;
116
117 private volatile boolean skipNextFocusChange;
118
119 private static final Color nonOpaqueBackground = new Color(0, 0, 0, 0);
120
121 private volatile boolean textured;
122
123 /**
124 * Current modal blocker or null.
125 *
126 * Synchronization: peerTreeLock.
127 */
128 private LWWindowPeer blocker;
129
130 public LWWindowPeer(Window target, PlatformComponent platformComponent,
131 PlatformWindow platformWindow)
132 {
133 super(target, platformComponent);
134 this.platformWindow = platformWindow;
135
136 Window owner = target.getOwner();
137 LWWindowPeer ownerPeer = (owner != null) ? (LWWindowPeer)owner.getPeer() : null;
138 PlatformWindow ownerDelegate = (ownerPeer != null) ? ownerPeer.getPlatformWindow() : null;
139
140 // The delegate.initialize() needs a non-null GC on X11.
141 GraphicsConfiguration gc = getTarget().getGraphicsConfiguration();
142 synchronized (getStateLock()) {
143 // graphicsConfig should be updated according to the real window
144 // bounds when the window is shown, see 4868278
145 this.graphicsConfig = gc;
146 }
147
148 if (!target.isFontSet()) {
149 target.setFont(DEFAULT_FONT);
150 }
151
152 if (!target.isBackgroundSet()) {
153 target.setBackground(SystemColor.window);
154 } else {
155 // first we check if user provided alpha for background. This is
156 // similar to what Apple's Java do.
157 // Since JDK7 we should rely on setOpacity() only.
158 // this.opacity = c.getAlpha();
159 }
160
161 if (!target.isForegroundSet()) {
162 target.setForeground(SystemColor.windowText);
163 // we should not call setForeground because it will call a repaint
164 // which the peer may not be ready to do yet.
165 }
166
167 platformWindow.initialize(target, this, ownerDelegate);
168 }
169
170 @Override
171 void initializeImpl() {
172 super.initializeImpl();
173 if (getTarget() instanceof Frame) {
174 setTitle(((Frame) getTarget()).getTitle());
175 setState(((Frame) getTarget()).getExtendedState());
176 } else if (getTarget() instanceof Dialog) {
177 setTitle(((Dialog) getTarget()).getTitle());
178 }
179
180 setAlwaysOnTop(getTarget().isAlwaysOnTop());
181 updateMinimumSize();
182
183 final Shape shape = getTarget().getShape();
184 if (shape != null) {
185 applyShape(Region.getInstance(shape, null));
186 }
187
188 final float opacity = getTarget().getOpacity();
189 if (opacity < 1.0f) {
190 setOpacity(opacity);
191 }
192
193 setOpaque(getTarget().isOpaque());
194
195 updateInsets(platformWindow.getInsets());
196 if (getSurfaceData() == null) {
197 replaceSurfaceData(false);
198 }
199 }
200
201 // Just a helper method
202 public PlatformWindow getPlatformWindow() {
203 return platformWindow;
204 }
205
206 @Override
207 protected LWWindowPeer getWindowPeerOrSelf() {
208 return this;
209 }
210
211 @Override
212 protected void initializeContainerPeer() {
213 // No-op as LWWindowPeer doesn't have any containerPeer
214 }
215
216 // ---- PEER METHODS ---- //
217
218 @Override
219 protected void disposeImpl() {
220 SurfaceData oldData = getSurfaceData();
221 synchronized (surfaceDataLock){
222 surfaceData = null;
223 }
224 if (oldData != null) {
225 oldData.invalidate();
226 }
227 if (isGrabbing()) {
228 ungrab();
229 }
230 destroyBuffers();
231 platformWindow.dispose();
232 super.disposeImpl();
233 }
234
235 @Override
236 protected void setVisibleImpl(final boolean visible) {
237 super.setVisibleImpl(visible);
238 // TODO: update graphicsConfig, see 4868278
239 platformWindow.setVisible(visible);
240 if (isSimpleWindow()) {
241 KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
242
243 if (visible) {
244 if (!getTarget().isAutoRequestFocus()) {
245 return;
246 } else {
247 requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
248 }
249 // Focus the owner in case this window is focused.
250 } else if (kfmPeer.getCurrentFocusedWindow() == getTarget()) {
251 // Transfer focus to the owner.
252 LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this);
253 if (owner != null) {
254 owner.requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
255 }
256 }
257 }
258 }
259
260 @Override
261 public GraphicsConfiguration getGraphicsConfiguration() {
262 return graphicsConfig;
263 }
264
265 @Override
266 public boolean updateGraphicsData(GraphicsConfiguration gc) {
267 setGraphicsConfig(gc);
268 return false;
269 }
270
271 protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) {
272 if (getSurfaceData() == null) {
273 return null;
274 }
275 if (fg == null) {
276 fg = SystemColor.windowText;
277 }
278 if (bg == null) {
279 bg = SystemColor.window;
280 }
281 if (f == null) {
282 f = DEFAULT_FONT;
283 }
284 return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f));
285 }
286
287 @Override
288 public void createBuffers(int numBuffers, BufferCapabilities caps)
289 throws AWTException
290 {
291 try {
292 // Assume this method is never called with numBuffers <= 1, as 0 is
293 // unsupported, and 1 corresponds to a SingleBufferStrategy which
294 // doesn't depend on the peer. Screen is considered as a separate
295 // "buffer", that's why numBuffers - 1
296 assert numBuffers > 1;
297
298 replaceSurfaceData(numBuffers - 1, caps, false);
299 } catch (InvalidPipeException z) {
300 throw new AWTException(z.toString());
301 }
302 }
303
304 @Override
305 public final Image getBackBuffer() {
306 synchronized (getStateLock()) {
307 return backBuffer;
308 }
309 }
310
311 @Override
312 public void flip(int x1, int y1, int x2, int y2,
313 BufferCapabilities.FlipContents flipAction)
314 {
315 platformWindow.flip(x1, y1, x2, y2, flipAction);
316 }
317
318 @Override
319 public final void destroyBuffers() {
320 final Image oldBB = getBackBuffer();
321 synchronized (getStateLock()) {
322 backBuffer = null;
323 }
324 if (oldBB != null) {
325 oldBB.flush();
326 }
327 }
328
329 @Override
330 public void setBounds(int x, int y, int w, int h, int op) {
331 if ((op & SET_CLIENT_SIZE) != 0) {
332 // SET_CLIENT_SIZE is only applicable to window peers, so handle it here
333 // instead of pulling 'insets' field up to LWComponentPeer
334 // no need to add insets since Window's notion of width and height includes insets.
335 op &= ~SET_CLIENT_SIZE;
336 op |= SET_SIZE;
337 }
338
339 if (w < MINIMUM_WIDTH) {
340 w = MINIMUM_WIDTH;
341 }
342 if (h < MINIMUM_HEIGHT) {
343 h = MINIMUM_HEIGHT;
344 }
345
346 if (graphicsConfig instanceof TextureSizeConstraining) {
347 final int maxW = ((TextureSizeConstraining)graphicsConfig).getMaxTextureWidth();
348 final int maxH = ((TextureSizeConstraining)graphicsConfig).getMaxTextureHeight();
349
350 if (w > maxW) {
351 w = maxW;
352 }
353 if (h > maxH) {
354 h = maxH;
355 }
356 }
357
358 // Don't post ComponentMoved/Resized and Paint events
359 // until we've got a notification from the delegate
360 setBounds(x, y, w, h, op, false, false);
361 // Get updated bounds, so we don't have to handle 'op' here manually
362 Rectangle r = getBounds();
363 platformWindow.setBounds(r.x, r.y, r.width, r.height);
364 }
365
366 @Override
367 public Point getLocationOnScreen() {
368 return platformWindow.getLocationOnScreen();
369 }
370
371 /**
372 * Overridden from LWContainerPeer to return the correct insets.
373 * Insets are queried from the delegate and are kept up to date by
374 * requiering when needed (i.e. when the window geometry is changed).
375 */
376 @Override
377 public Insets getInsets() {
378 synchronized (getStateLock()) {
379 return insets;
380 }
381 }
382
383 @Override
384 public FontMetrics getFontMetrics(Font f) {
385 // TODO: check for "use platform metrics" settings
386 return platformWindow.getFontMetrics(f);
387 }
388
389 @Override
390 public void toFront() {
391 platformWindow.toFront();
392 }
393
394 @Override
395 public void toBack() {
396 platformWindow.toBack();
397 }
398
399 @Override
400 public void setZOrder(ComponentPeer above) {
401 throw new RuntimeException("not implemented");
402 }
403
404 @Override
405 public void setAlwaysOnTop(boolean value) {
406 platformWindow.setAlwaysOnTop(value);
407 }
408
409 @Override
410 public void updateFocusableWindowState() {
411 platformWindow.updateFocusableWindowState();
412 }
413
414 @Override
415 public void setModalBlocked(Dialog blocker, boolean blocked) {
416 synchronized (getPeerTreeLock()) {
417 this.blocker = blocked ? (LWWindowPeer)blocker.getPeer() : null;
418 }
419
420 platformWindow.setModalBlocked(blocked);
421 }
422
423 @Override
424 public void updateMinimumSize() {
425 final Dimension min;
426 if (getTarget().isMinimumSizeSet()) {
427 min = getTarget().getMinimumSize();
428 min.width = Math.max(min.width, MINIMUM_WIDTH);
429 min.height = Math.max(min.height, MINIMUM_HEIGHT);
430 } else {
431 min = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT);
432 }
433
434 final int maxW, maxH;
435 if (graphicsConfig instanceof TextureSizeConstraining) {
436 maxW = ((TextureSizeConstraining)graphicsConfig).getMaxTextureWidth();
437 maxH = ((TextureSizeConstraining)graphicsConfig).getMaxTextureHeight();
438 } else {
439 maxW = maxH = Integer.MAX_VALUE;
440 }
441
442 final Dimension max;
443 if (getTarget().isMaximumSizeSet()) {
444 max = getTarget().getMaximumSize();
445 max.width = Math.min(max.width, maxW);
446 max.height = Math.min(max.height, maxH);
447 } else {
448 max = new Dimension(maxW, maxH);
449 }
450
451 platformWindow.setSizeConstraints(min.width, min.height, max.width, max.height);
452 }
453
454 @Override
455 public void updateIconImages() {
456 getPlatformWindow().updateIconImages();
457 }
458
459 @Override
460 public void setOpacity(float opacity) {
461 getPlatformWindow().setOpacity(opacity);
462 repaintPeer();
463 }
464
465 @Override
466 public final void setOpaque(final boolean isOpaque) {
467 if (this.isOpaque != isOpaque) {
468 this.isOpaque = isOpaque;
469 updateOpaque();
470 }
471 }
472
473 private void updateOpaque() {
474 getPlatformWindow().setOpaque(!isTranslucent());
475 replaceSurfaceData(false);
476 repaintPeer();
477 }
478
479 @Override
480 public void updateWindow() {
481 }
482
483 public final boolean isTextured() {
484 return textured;
485 }
486
487 public final void setTextured(final boolean isTextured) {
488 textured = isTextured;
489 }
490
491 public final boolean isTranslucent() {
492 synchronized (getStateLock()) {
493 /*
494 * Textured window is a special case of translucent window.
495 * The difference is only in nswindow background. So when we set
496 * texture property our peer became fully translucent. It doesn't
497 * fill background, create non opaque backbuffers and layer etc.
498 */
499 return !isOpaque || isShaped() || isTextured();
500 }
501 }
502
503 @Override
504 final void applyShapeImpl(final Region shape) {
505 super.applyShapeImpl(shape);
506 updateOpaque();
507 }
508
509 @Override
510 public void repositionSecurityWarning() {
511 throw new RuntimeException("not implemented");
512 }
513
514 // ---- FRAME PEER METHODS ---- //
515
516 @Override // FramePeer and DialogPeer
517 public void setTitle(String title) {
518 platformWindow.setTitle(title == null ? "" : title);
519 }
520
521 @Override
522 public void setMenuBar(MenuBar mb) {
523 platformWindow.setMenuBar(mb);
524 }
525
526 @Override // FramePeer and DialogPeer
527 public void setResizable(boolean resizable) {
528 platformWindow.setResizable(resizable);
529 }
530
531 @Override
532 public void setState(int state) {
533 platformWindow.setWindowState(state);
534 }
535
536 @Override
537 public int getState() {
538 return windowState;
539 }
540
541 @Override
542 public void setMaximizedBounds(Rectangle bounds) {
543 // TODO: not implemented
544 }
545
546 @Override
547 public void setBoundsPrivate(int x, int y, int width, int height) {
548 setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK);
549 }
550
551 @Override
552 public Rectangle getBoundsPrivate() {
553 throw new RuntimeException("not implemented");
554 }
555
556 // ---- DIALOG PEER METHODS ---- //
557
558 @Override
559 public void blockWindows(List<Window> windows) {
560 //TODO: LWX will probably need some collectJavaToplevels to speed this up
561 for (Window w : windows) {
562 WindowPeer wp = (WindowPeer)w.getPeer();
563 if (wp != null) {
564 wp.setModalBlocked((Dialog)getTarget(), true);
565 }
566 }
567 }
568
569 // ---- PEER NOTIFICATIONS ---- //
570
571 public void notifyIconify(boolean iconify) {
572 //The toplevel target is Frame and states are applicable to it.
573 //Otherwise, the target is Window and it don't have state property.
574 //Hopefully, no such events are posted in the queue so consider the
575 //target as Frame in all cases.
576
577 // REMIND: should we send it anyway if the state not changed since last
578 // time?
579 WindowEvent iconifyEvent = new WindowEvent(getTarget(),
580 iconify ? WindowEvent.WINDOW_ICONIFIED
581 : WindowEvent.WINDOW_DEICONIFIED);
582 postEvent(iconifyEvent);
583
584 int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL;
585 postWindowStateChangedEvent(newWindowState);
586
587 // REMIND: RepaintManager doesn't repaint iconified windows and
588 // hence ignores any repaint request during deiconification.
589 // So, we need to repaint window explicitly when it becomes normal.
590 if (!iconify) {
591 repaintPeer();
592 }
593 }
594
595 public void notifyZoom(boolean isZoomed) {
596 int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL;
597 postWindowStateChangedEvent(newWindowState);
598 }
599
600 /**
601 * Called by the delegate when any part of the window should be repainted.
602 */
603 public void notifyExpose(final int x, final int y, final int w, final int h) {
604 // TODO: there's a serious problem with Swing here: it handles
605 // the exposition internally, so SwingPaintEventDispatcher always
606 // return null from createPaintEvent(). However, we flush the
607 // back buffer here unconditionally, so some flickering may appear.
608 // A possible solution is to split postPaintEvent() into two parts,
609 // and override that part which is only called after if
610 // createPaintEvent() returned non-null value and flush the buffer
611 // from the overridden method
612 flushOnscreenGraphics();
613 repaintPeer(new Rectangle(x, y, w, h));
614 }
615
616 /**
617 * Called by the delegate when this window is moved/resized by user.
618 * There's no notifyReshape() in LWComponentPeer as the only
619 * components which could be resized by user are top-level windows.
620 */
621 public final void notifyReshape(int x, int y, int w, int h) {
622 boolean moved = false;
623 boolean resized = false;
624 synchronized (getStateLock()) {
625 moved = (x != sysX) || (y != sysY);
626 resized = (w != sysW) || (h != sysH);
627 sysX = x;
628 sysY = y;
629 sysW = w;
630 sysH = h;
631 }
632
633 // Check if anything changed
634 if (!moved && !resized) {
635 return;
636 }
637 // First, update peer's bounds
638 setBounds(x, y, w, h, SET_BOUNDS, false, false);
639
640 // Second, update the graphics config and surface data
641 checkIfOnNewScreen();
642 if (resized) {
643 replaceSurfaceData();
644 flushOnscreenGraphics();
645 }
646
647 // Third, COMPONENT_MOVED/COMPONENT_RESIZED events
648 if (moved) {
649 handleMove(x, y, true);
650 }
651 if (resized) {
652 handleResize(w, h,true);
653 }
654 }
655
656 private void clearBackground(final int w, final int h) {
657 final Graphics g = getOnscreenGraphics(getForeground(), getBackground(),
658 getFont());
659 if (g != null) {
660 try {
661 if (g instanceof Graphics2D) {
662 ((Graphics2D) g).setComposite(AlphaComposite.Src);
663 }
664 if (isTranslucent()) {
665 g.setColor(nonOpaqueBackground);
666 g.fillRect(0, 0, w, h);
667 }
668 if (!isTextured()) {
669 if (g instanceof SunGraphics2D) {
670 SG2DConstraint((SunGraphics2D) g, getRegion());
671 }
672 g.setColor(getBackground());
673 g.fillRect(0, 0, w, h);
674 }
675 } finally {
676 g.dispose();
677 }
678 }
679 }
680
681 public void notifyUpdateCursor() {
682 getLWToolkit().getCursorManager().updateCursorLater(this);
683 }
684
685 public void notifyActivation(boolean activation) {
686 changeFocusedWindow(activation);
687 }
688
689 // MouseDown in non-client area
690 public void notifyNCMouseDown() {
691 // Ungrab except for a click on a Dialog with the grabbing owner
692 if (grabbingWindow != null &&
693 grabbingWindow != getOwnerFrameDialog(this))
694 {
695 grabbingWindow.ungrab();
696 }
697 }
698
699 // ---- EVENTS ---- //
700
701 /*
702 * Called by the delegate to dispatch the event to Java. Event
703 * coordinates are relative to non-client window are, i.e. the top-left
704 * point of the client area is (insets.top, insets.left).
705 */
706 public void dispatchMouseEvent(int id, long when, int button,
707 int x, int y, int screenX, int screenY,
708 int modifiers, int clickCount, boolean popupTrigger,
709 byte[] bdata)
710 {
711 // TODO: fill "bdata" member of AWTEvent
712 Rectangle r = getBounds();
713 // findPeerAt() expects parent coordinates
714 LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
715
716 if (id == MouseEvent.MOUSE_EXITED) {
717 isMouseOver = false;
718 if (lastMouseEventPeer != null) {
719 if (lastMouseEventPeer.isEnabled()) {
720 Point lp = lastMouseEventPeer.windowToLocal(x, y,
721 this);
722 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
723 MouseEvent.MOUSE_EXITED, when,
724 modifiers, lp.x, lp.y, screenX,
725 screenY, clickCount, popupTrigger,
726 button));
727 }
728
729 // Sometimes we may get MOUSE_EXITED after lastCommonMouseEventPeer is switched
730 // to a peer from another window. So we must first check if this peer is
731 // the same as lastWindowPeer
732 if (lastCommonMouseEventPeer != null && lastCommonMouseEventPeer.getWindowPeerOrSelf() == this) {
733 lastCommonMouseEventPeer = null;
734 }
735 lastMouseEventPeer = null;
736 }
737 } else if(id == MouseEvent.MOUSE_ENTERED) {
738 isMouseOver = true;
739 if (targetPeer != null) {
740 if (targetPeer.isEnabled()) {
741 Point lp = targetPeer.windowToLocal(x, y, this);
742 postEvent(new MouseEvent(targetPeer.getTarget(),
743 MouseEvent.MOUSE_ENTERED, when,
744 modifiers, lp.x, lp.y, screenX,
745 screenY, clickCount, popupTrigger,
746 button));
747 }
748 lastCommonMouseEventPeer = targetPeer;
749 lastMouseEventPeer = targetPeer;
750 }
751 } else {
752 PlatformWindow topmostPlatforWindow =
753 platformWindow.getTopmostPlatformWindowUnderMouse();
754
755 LWWindowPeer topmostWindowPeer =
756 topmostPlatforWindow != null ? topmostPlatforWindow.getPeer() : null;
757
758 // topmostWindowPeer == null condition is added for the backward
759 // compatibility with applets. It can be removed when the
760 // getTopmostPlatformWindowUnderMouse() method will be properly
761 // implemented in CPlatformEmbeddedFrame class
762 if (topmostWindowPeer == this || topmostWindowPeer == null) {
763 generateMouseEnterExitEventsForComponents(when, button, x, y,
764 screenX, screenY, modifiers, clickCount, popupTrigger,
765 targetPeer);
766 } else {
767 LWComponentPeer topmostTargetPeer =
768 topmostWindowPeer != null ? topmostWindowPeer.findPeerAt(r.x + x, r.y + y) : null;
769 topmostWindowPeer.generateMouseEnterExitEventsForComponents(when, button, x, y,
770 screenX, screenY, modifiers, clickCount, popupTrigger,
771 topmostTargetPeer);
772 }
773
774 // TODO: fill "bdata" member of AWTEvent
775
776 int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0;
777 int otherButtonsPressed = modifiers & ~eventButtonMask;
778
779 // For pressed/dragged/released events OS X treats other
780 // mouse buttons as if they were BUTTON2, so we do the same
781 int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1;
782
783 // MOUSE_ENTERED/EXITED are generated for the components strictly under
784 // mouse even when dragging. That's why we first update lastMouseEventPeer
785 // based on initial targetPeer value and only then recalculate targetPeer
786 // for MOUSE_DRAGGED/RELEASED events
787 if (id == MouseEvent.MOUSE_PRESSED) {
788
789 // Ungrab only if this window is not an owned window of the grabbing one.
790 if (!isGrabbing() && grabbingWindow != null &&
791 grabbingWindow != getOwnerFrameDialog(this))
792 {
793 grabbingWindow.ungrab();
794 }
795 if (otherButtonsPressed == 0) {
796 mouseClickButtons = eventButtonMask;
797 } else {
798 mouseClickButtons |= eventButtonMask;
799 }
800
801 // The window should be focused on mouse click. If it gets activated by the native platform,
802 // this request will be no op. It will take effect when:
803 // 1. A simple not focused window is clicked.
804 // 2. An active but not focused owner frame/dialog is clicked.
805 // The mouse event then will trigger a focus request "in window" to the component, so the window
806 // should gain focus before.
807 requestWindowFocus(CausedFocusEvent.Cause.MOUSE_EVENT);
808
809 mouseDownTarget[targetIdx] = targetPeer;
810 } else if (id == MouseEvent.MOUSE_DRAGGED) {
811 // Cocoa dragged event has the information about which mouse
812 // button is being dragged. Use it to determine the peer that
813 // should receive the dragged event.
814 targetPeer = mouseDownTarget[targetIdx];
815 mouseClickButtons &= ~modifiers;
816 } else if (id == MouseEvent.MOUSE_RELEASED) {
817 // TODO: currently, mouse released event goes to the same component
818 // that received corresponding mouse pressed event. For most cases,
819 // it's OK, however, we need to make sure that our behavior is consistent
820 // with 1.6 for cases where component in question have been
821 // hidden/removed in between of mouse pressed/released events.
822 targetPeer = mouseDownTarget[targetIdx];
823
824 if ((modifiers & eventButtonMask) == 0) {
825 mouseDownTarget[targetIdx] = null;
826 }
827
828 // mouseClickButtons is updated below, after MOUSE_CLICK is sent
829 }
830
831 if (targetPeer == null) {
832 //TODO This can happen if this window is invisible. this is correct behavior in this case?
833 targetPeer = this;
834 }
835
836
837 Point lp = targetPeer.windowToLocal(x, y, this);
838 if (targetPeer.isEnabled()) {
839 MouseEvent event = new MouseEvent(targetPeer.getTarget(), id,
840 when, modifiers, lp.x, lp.y,
841 screenX, screenY, clickCount,
842 popupTrigger, button);
843 postEvent(event);
844 }
845
846 if (id == MouseEvent.MOUSE_RELEASED) {
847 if ((mouseClickButtons & eventButtonMask) != 0
848 && targetPeer.isEnabled()) {
849 postEvent(new MouseEvent(targetPeer.getTarget(),
850 MouseEvent.MOUSE_CLICKED,
851 when, modifiers,
852 lp.x, lp.y, screenX, screenY,
853 clickCount, popupTrigger, button));
854 }
855 mouseClickButtons &= ~eventButtonMask;
856 }
857 }
858 notifyUpdateCursor();
859 }
860
861 private void generateMouseEnterExitEventsForComponents(long when,
862 int button, int x, int y, int screenX, int screenY,
863 int modifiers, int clickCount, boolean popupTrigger,
864 LWComponentPeer targetPeer) {
865
866 if (!isMouseOver || targetPeer == lastMouseEventPeer) {
867 return;
868 }
869
870 // Generate Mouse Exit for components
871 if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) {
872 Point oldp = lastMouseEventPeer.windowToLocal(x, y, this);
873 postEvent(new MouseEvent(lastMouseEventPeer.getTarget(),
874 MouseEvent.MOUSE_EXITED,
875 when, modifiers,
876 oldp.x, oldp.y, screenX, screenY,
877 clickCount, popupTrigger, button));
878 }
879 lastCommonMouseEventPeer = targetPeer;
880 lastMouseEventPeer = targetPeer;
881
882 // Generate Mouse Enter for components
883 if (targetPeer != null && targetPeer.isEnabled()) {
884 Point newp = targetPeer.windowToLocal(x, y, this);
885 postEvent(new MouseEvent(targetPeer.getTarget(),
886 MouseEvent.MOUSE_ENTERED,
887 when, modifiers,
888 newp.x, newp.y, screenX, screenY,
889 clickCount, popupTrigger, button));
890 }
891 }
892
893 public void dispatchMouseWheelEvent(long when, int x, int y, int modifiers,
894 int scrollType, int scrollAmount,
895 int wheelRotation, double preciseWheelRotation,
896 byte[] bdata)
897 {
898 // TODO: could we just use the last mouse event target here?
899 Rectangle r = getBounds();
900 // findPeerAt() expects parent coordinates
901 final LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y);
902 if (targetPeer == null || !targetPeer.isEnabled()) {
903 return;
904 }
905
906 Point lp = targetPeer.windowToLocal(x, y, this);
907 // TODO: fill "bdata" member of AWTEvent
908 // TODO: screenX/screenY
909 postEvent(new MouseWheelEvent(targetPeer.getTarget(),
910 MouseEvent.MOUSE_WHEEL,
911 when, modifiers,
912 lp.x, lp.y,
913 0, 0, /* screenX, Y */
914 0 /* clickCount */, false /* popupTrigger */,
915 scrollType, scrollAmount,
916 wheelRotation, preciseWheelRotation));
917 }
918
919 /*
920 * Called by the delegate when a key is pressed.
921 */
922 public void dispatchKeyEvent(int id, long when, int modifiers,
923 int keyCode, char keyChar, int keyLocation)
924 {
925 LWKeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
926 Component focusOwner = kfmPeer.getCurrentFocusOwner();
927
928 if (focusOwner == null) {
929 focusOwner = kfmPeer.getCurrentFocusedWindow();
930 if (focusOwner == null) {
931 focusOwner = this.getTarget();
932 }
933 }
934 postEvent(new KeyEvent(focusOwner, id, when, modifiers, keyCode, keyChar, keyLocation));
935 }
936
937
938 // ---- UTILITY METHODS ---- //
939
940 private void postWindowStateChangedEvent(int newWindowState) {
941 if (getTarget() instanceof Frame) {
942 AWTAccessor.getFrameAccessor().setExtendedState(
943 (Frame)getTarget(), newWindowState);
944 }
945 WindowEvent stateChangedEvent = new WindowEvent(getTarget(),
946 WindowEvent.WINDOW_STATE_CHANGED,
947 windowState, newWindowState);
948 postEvent(stateChangedEvent);
949 windowState = newWindowState;
950 }
951
952 private static int getGraphicsConfigScreen(GraphicsConfiguration gc) {
953 // TODO: this method can be implemented in a more
954 // efficient way by forwarding to the delegate
955 GraphicsDevice gd = gc.getDevice();
956 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
957 GraphicsDevice[] gds = ge.getScreenDevices();
958 for (int i = 0; i < gds.length; i++) {
959 if (gds[i] == gd) {
960 return i;
961 }
962 }
963 // Should never happen if gc is a screen device config
964 return 0;
965 }
966
967 /*
968 * This method is called when window's graphics config is changed from
969 * the app code (e.g. when the window is made non-opaque) or when
970 * the window is moved to another screen by user.
971 *
972 * Returns true if the graphics config has been changed, false otherwise.
973 */
974 private boolean setGraphicsConfig(GraphicsConfiguration gc) {
975 synchronized (getStateLock()) {
976 if (graphicsConfig == gc) {
977 return false;
978 }
979 // If window's graphics config is changed from the app code, the
980 // config correspond to the same device as before; when the window
981 // is moved by user, graphicsDevice is updated in checkIfOnNewScreen().
982 // In either case, there's nothing to do with screenOn here
983 graphicsConfig = gc;
984 }
985 // SurfaceData is replaced later in updateGraphicsData()
986 return true;
987 }
988
989 private void checkIfOnNewScreen() {
990 GraphicsDevice newGraphicsDevice = platformWindow.getGraphicsDevice();
991 synchronized (getStateLock()) {
992 if (graphicsDevice == newGraphicsDevice) {
993 return;
994 }
995 graphicsDevice = newGraphicsDevice;
996 }
997
998 // TODO: DisplayChangedListener stuff
999 final GraphicsConfiguration newGC = newGraphicsDevice.getDefaultConfiguration();
1000
1001 if (!setGraphicsConfig(newGC)) return;
1002
1003 SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
1004 public void run() {
1005 AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC);
1006 }
1007 });
1008 }
1009
1010 /*
1011 * May be called by delegate to provide SD to Java2D code.
1012 */
1013 public SurfaceData getSurfaceData() {
1014 synchronized (surfaceDataLock) {
1015 return surfaceData;
1016 }
1017 }
1018
1019 private void replaceSurfaceData() {
1020 replaceSurfaceData(true);
1021 }
1022
1023 private void replaceSurfaceData(boolean blit) {
1024 replaceSurfaceData(backBufferCount, backBufferCaps, blit);
1025 }
1026
1027 private void replaceSurfaceData(int newBackBufferCount,
1028 BufferCapabilities newBackBufferCaps,
1029 boolean blit) {
1030 synchronized (surfaceDataLock) {
1031 final SurfaceData oldData = getSurfaceData();
1032 surfaceData = platformWindow.replaceSurfaceData();
1033 // TODO: volatile image
1034 // VolatileImage oldBB = backBuffer;
1035 BufferedImage oldBB = backBuffer;
1036 backBufferCount = newBackBufferCount;
1037 backBufferCaps = newBackBufferCaps;
1038 final Rectangle size = getSize();
1039 if (getSurfaceData() != null && oldData != getSurfaceData()) {
1040 clearBackground(size.width, size.height);
1041 }
1042
1043 if (blit) {
1044 blitSurfaceData(oldData, getSurfaceData());
1045 }
1046
1047 if (oldData != null && oldData != getSurfaceData()) {
1048 // TODO: drop oldData for D3D/WGL pipelines
1049 // This can only happen when this peer is being created
1050 oldData.flush();
1051 }
1052
1053 // TODO: volatile image
1054 // backBuffer = (VolatileImage)delegate.createBackBuffer();
1055 backBuffer = (BufferedImage) platformWindow.createBackBuffer();
1056 if (backBuffer != null) {
1057 Graphics g = backBuffer.getGraphics();
1058 try {
1059 Rectangle r = getBounds();
1060 if (g instanceof Graphics2D) {
1061 ((Graphics2D) g).setComposite(AlphaComposite.Src);
1062 }
1063 g.setColor(nonOpaqueBackground);
1064 g.fillRect(0, 0, r.width, r.height);
1065 if (g instanceof SunGraphics2D) {
1066 SG2DConstraint((SunGraphics2D) g, getRegion());
1067 }
1068 if (!isTextured()) {
1069 g.setColor(getBackground());
1070 g.fillRect(0, 0, r.width, r.height);
1071 }
1072 if (oldBB != null) {
1073 // Draw the old back buffer to the new one
1074 g.drawImage(oldBB, 0, 0, null);
1075 oldBB.flush();
1076 }
1077 } finally {
1078 g.dispose();
1079 }
1080 }
1081 }
1082 }
1083
1084 private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) {
1085 //TODO blit. proof-of-concept
1086 if (src != dst && src != null && dst != null
1087 && !(dst instanceof NullSurfaceData)
1088 && !(src instanceof NullSurfaceData)
1089 && src.getSurfaceType().equals(dst.getSurfaceType())) {
1090 final Rectangle size = getSize();
1091 final Blit blit = Blit.locate(src.getSurfaceType(),
1092 CompositeType.Src,
1093 dst.getSurfaceType());
1094 if (blit != null) {
1095 blit.Blit(src, dst, AlphaComposite.Src,
1096 getRegion(), 0, 0, 0, 0, size.width, size.height);
1097 }
1098 }
1099 }
1100
1101 public int getBackBufferCount() {
1102 return backBufferCount;
1103 }
1104
1105 public BufferCapabilities getBackBufferCaps() {
1106 return backBufferCaps;
1107 }
1108
1109 /*
1110 * Request the window insets from the delegate and compares it
1111 * with the current one. This method is mostly called by the
1112 * delegate, e.g. when the window state is changed and insets
1113 * should be recalculated.
1114 *
1115 * This method may be called on the toolkit thread.
1116 */
1117 public boolean updateInsets(Insets newInsets) {
1118 boolean changed = false;
1119 synchronized (getStateLock()) {
1120 changed = (insets.equals(newInsets));
1121 insets = newInsets;
1122 }
1123
1124 if (changed) {
1125 replaceSurfaceData();
1126 repaintPeer();
1127 }
1128
1129 return changed;
1130 }
1131
1132 public static LWWindowPeer getWindowUnderCursor() {
1133 return lastCommonMouseEventPeer != null ? lastCommonMouseEventPeer.getWindowPeerOrSelf() : null;
1134 }
1135
1136 public static LWComponentPeer<?, ?> getPeerUnderCursor() {
1137 return lastCommonMouseEventPeer;
1138 }
1139
1140 /*
1141 * Requests platform to set native focus on a frame/dialog.
1142 * In case of a simple window, triggers appropriate java focus change.
1143 */
1144 public boolean requestWindowFocus(CausedFocusEvent.Cause cause) {
1145 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1146 focusLog.fine("requesting native focus to " + this);
1147 }
1148
1149 if (!focusAllowedFor()) {
1150 focusLog.fine("focus is not allowed");
1151 return false;
1152 }
1153
1154 if (platformWindow.rejectFocusRequest(cause)) {
1155 return false;
1156 }
1157
1158 Window currentActive = KeyboardFocusManager.
1159 getCurrentKeyboardFocusManager().getActiveWindow();
1160
1161 // Make the owner active window.
1162 if (isSimpleWindow()) {
1163 LWWindowPeer owner = getOwnerFrameDialog(this);
1164
1165 // If owner is not natively active, request native
1166 // activation on it w/o sending events up to java.
1167 if (owner != null && !owner.platformWindow.isActive()) {
1168 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1169 focusLog.fine("requesting native focus to the owner " + owner);
1170 }
1171 LWWindowPeer currentActivePeer = (currentActive != null ?
1172 (LWWindowPeer)currentActive.getPeer() : null);
1173
1174 // Ensure the opposite is natively active and suppress sending events.
1175 if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) {
1176 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1177 focusLog.fine("the opposite is " + currentActivePeer);
1178 }
1179 currentActivePeer.skipNextFocusChange = true;
1180 }
1181 owner.skipNextFocusChange = true;
1182
1183 owner.platformWindow.requestWindowFocus();
1184 }
1185
1186 // DKFM will synthesize all the focus/activation events correctly.
1187 changeFocusedWindow(true);
1188 return true;
1189
1190 // In case the toplevel is active but not focused, change focus directly,
1191 // as requesting native focus on it will not have effect.
1192 } else if (getTarget() == currentActive && !getTarget().hasFocus()) {
1193
1194 changeFocusedWindow(true);
1195 return true;
1196 }
1197 return platformWindow.requestWindowFocus();
1198 }
1199
1200 private boolean focusAllowedFor() {
1201 Window window = getTarget();
1202 // TODO: check if modal blocked
1203 return window.isVisible() && window.isEnabled() && isFocusableWindow();
1204 }
1205
1206 private boolean isFocusableWindow() {
1207 boolean focusable = getTarget().isFocusableWindow();
1208 if (isSimpleWindow()) {
1209 LWWindowPeer ownerPeer = getOwnerFrameDialog(this);
1210 if (ownerPeer == null) {
1211 return false;
1212 }
1213 return focusable && ownerPeer.getTarget().isFocusableWindow();
1214 }
1215 return focusable;
1216 }
1217
1218 public boolean isSimpleWindow() {
1219 Window window = getTarget();
1220 return !(window instanceof Dialog || window instanceof Frame);
1221 }
1222
1223 /*
1224 * Changes focused window on java level.
1225 */
1226 private void changeFocusedWindow(boolean becomesFocused) {
1227 if (focusLog.isLoggable(PlatformLogger.FINE)) {
1228 focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this);
1229 }
1230 if (skipNextFocusChange) {
1231 focusLog.fine("skipping focus change");
1232 skipNextFocusChange = false;
1233 return;
1234 }
1235 if (!isFocusableWindow() && becomesFocused) {
1236 focusLog.fine("the window is not focusable");
1237 return;
1238 }
1239 if (becomesFocused) {
1240 synchronized (getPeerTreeLock()) {
1241 if (blocker != null) {
1242 if (focusLog.isLoggable(PlatformLogger.FINEST)) {
1243 focusLog.finest("the window is blocked by " + blocker);
1244 }
1245 return;
1246 }
1247 }
1248 }
1249
1250 KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
1251 Window oppositeWindow = becomesFocused ? kfmPeer.getCurrentFocusedWindow() : null;
1252
1253 // Note, the method is not called:
1254 // - when the opposite (gaining focus) window is an owned/owner window.
1255 // - for a simple window in any case.
1256 if (!becomesFocused &&
1257 (isGrabbing() || getOwnerFrameDialog(grabbingWindow) == this))
1258 {
1259 focusLog.fine("ungrabbing on " + grabbingWindow);
1260 // ungrab a simple window if its owner looses activation.
1261 grabbingWindow.ungrab();
1262 }
1263
1264 kfmPeer.setCurrentFocusedWindow(becomesFocused ? getTarget() : null);
1265
1266 int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;
1267 WindowEvent windowEvent = new TimedWindowEvent(getTarget(), eventID, oppositeWindow, System.currentTimeMillis());
1268
1269 // TODO: wrap in SequencedEvent
1270 postEvent(windowEvent);
1271 }
1272
1273 static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) {
1274 Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1275 while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
1276 owner = owner.getOwner();
1277 }
1278 return owner != null ? (LWWindowPeer)owner.getPeer() : null;
1279 }
1280
1281 /**
1282 * Returns the foremost modal blocker of this window, or null.
1283 */
1284 public LWWindowPeer getBlocker() {
1285 synchronized (getPeerTreeLock()) {
1286 LWWindowPeer blocker = this.blocker;
1287 if (blocker == null) {
1288 return null;
1289 }
1290 while (blocker.blocker != null) {
1291 blocker = blocker.blocker;
1292 }
1293 return blocker;
1294 }
1295 }
1296
1297 public void enterFullScreenMode() {
1298 platformWindow.enterFullScreenMode();
1299 }
1300
1301 public void exitFullScreenMode() {
1302 platformWindow.exitFullScreenMode();
1303 }
1304
1305 public long getLayerPtr() {
1306 return getPlatformWindow().getLayerPtr();
1307 }
1308
1309 void grab() {
1310 if (grabbingWindow != null && !isGrabbing()) {
1311 grabbingWindow.ungrab();
1312 }
1313 grabbingWindow = this;
1314 }
1315
1316 void ungrab() {
1317 if (isGrabbing()) {
1318 grabbingWindow = null;
1319 postEvent(new UngrabEvent(getTarget()));
1320 }
1321 }
1322
1323 private boolean isGrabbing() {
1324 return this == grabbingWindow;
1325 }
1326
1327 @Override
1328 public String toString() {
1329 return super.toString() + " [target is " + getTarget() + "]";
1330 }
1331 }