1 /*
2 * Copyright (c) 1996, 2019, 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 package sun.awt.windows;
26
27 import java.awt.*;
28 import java.awt.peer.*;
29 import java.awt.image.VolatileImage;
30 import sun.awt.RepaintArea;
31 import sun.awt.image.SunVolatileImage;
32 import sun.awt.image.ToolkitImage;
33 import java.awt.image.BufferedImage;
34 import java.awt.image.ImageProducer;
35 import java.awt.image.ImageObserver;
36 import java.awt.image.ColorModel;
37 import java.awt.event.PaintEvent;
38 import java.awt.event.InvocationEvent;
39 import java.awt.event.KeyEvent;
40 import java.awt.event.FocusEvent;
41 import java.awt.event.MouseEvent;
42 import java.awt.event.MouseWheelEvent;
43 import java.awt.event.InputEvent;
44 import sun.awt.Win32GraphicsConfig;
45 import sun.awt.Win32GraphicsEnvironment;
46 import sun.java2d.InvalidPipeException;
47 import sun.java2d.SurfaceData;
48 import sun.java2d.ScreenUpdateManager;
49 import sun.java2d.d3d.D3DSurfaceData;
50 import sun.java2d.opengl.OGLSurfaceData;
51 import sun.java2d.pipe.Region;
52 import sun.awt.PaintEventDispatcher;
53 import sun.awt.SunToolkit;
54 import sun.awt.event.IgnorePaintEvent;
55
56 import java.awt.dnd.DropTarget;
57 import java.awt.dnd.peer.DropTargetPeer;
58 import java.awt.geom.AffineTransform;
59 import sun.awt.AWTAccessor;
60
61 import sun.util.logging.PlatformLogger;
62
63 public abstract class WComponentPeer extends WObjectPeer
64 implements ComponentPeer, DropTargetPeer
65 {
66 /**
67 * Handle to native window
68 */
69 protected volatile long hwnd;
70
71 private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.windows.WComponentPeer");
72 private static final PlatformLogger shapeLog = PlatformLogger.getLogger("sun.awt.windows.shape.WComponentPeer");
73 private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.awt.windows.focus.WComponentPeer");
74
75 // ComponentPeer implementation
76 SurfaceData surfaceData;
77
78 private RepaintArea paintArea;
79
80 protected Win32GraphicsConfig winGraphicsConfig;
81
82 boolean isLayouting = false;
83 boolean paintPending = false;
84 int oldWidth = -1;
85 int oldHeight = -1;
86 private int numBackBuffers = 0;
87 private VolatileImage backBuffer = null;
88 private BufferCapabilities backBufferCaps = null;
89
90 // foreground, background and color are cached to avoid calling back
91 // into the Component.
92 private Color foreground;
93 private Color background;
94 private Font font;
95
96 @Override
97 public native boolean isObscured();
98 @Override
99 public boolean canDetermineObscurity() { return true; }
100
101 // DropTarget support
102
103 int nDropTargets;
104 long nativeDropTargetContext; // native pointer
105
106 private synchronized native void pShow();
107 synchronized native void hide();
108 synchronized native void enable();
109 synchronized native void disable();
110
111 public long getHWnd() {
112 return hwnd;
113 }
114
115 /* New 1.1 API */
116 @Override
117 public native Point getLocationOnScreen();
118
119 /* New 1.1 API */
120 @Override
121 public void setVisible(boolean b) {
122 if (b) {
123 show();
124 } else {
125 hide();
126 }
127 }
128
129 public void show() {
130 Dimension s = ((Component)target).getSize();
131 oldHeight = s.height;
132 oldWidth = s.width;
133 pShow();
134 }
135
136 /* New 1.1 API */
137 @Override
138 public void setEnabled(boolean b) {
139 if (b) {
140 enable();
141 } else {
142 disable();
143 }
144 }
145
146 public int serialNum = 0;
147
148 private native void reshapeNoCheck(int x, int y, int width, int height);
149
150 /* New 1.1 API */
151 @Override
152 public void setBounds(int x, int y, int width, int height, int op) {
153 // Should set paintPending before reahape to prevent
154 // thread race between paint events
155 // Native components do redraw after resize
156 paintPending = (width != oldWidth) || (height != oldHeight);
157
158 if ( (op & NO_EMBEDDED_CHECK) != 0 ) {
159 reshapeNoCheck(x, y, width, height);
160 } else {
161 reshape(x, y, width, height);
162 }
163 if ((width != oldWidth) || (height != oldHeight)) {
164 // Only recreate surfaceData if this setBounds is called
165 // for a resize; a simple move should not trigger a recreation
166 try {
167 replaceSurfaceData();
168 } catch (InvalidPipeException e) {
169 // REMIND : what do we do if our surface creation failed?
170 }
171 oldWidth = width;
172 oldHeight = height;
173 }
174
175 serialNum++;
176 }
177
178 /*
179 * Called from native code (on Toolkit thread) in order to
180 * dynamically layout the Container during resizing
181 */
182 void dynamicallyLayoutContainer() {
183 // If we got the WM_SIZING, this must be a Container, right?
184 // In fact, it must be the top-level Container.
185 if (log.isLoggable(PlatformLogger.Level.FINE)) {
186 Container parent = WToolkit.getNativeContainer((Component)target);
187 if (parent != null) {
188 log.fine("Assertion (parent == null) failed");
189 }
190 }
191 final Container cont = (Container)target;
192
193 WToolkit.executeOnEventHandlerThread(cont, new Runnable() {
194 @Override
195 public void run() {
196 // Discarding old paint events doesn't seem to be necessary.
197 cont.invalidate();
198 cont.validate();
199
200 if (surfaceData instanceof D3DSurfaceData.D3DWindowSurfaceData ||
201 surfaceData instanceof OGLSurfaceData)
202 {
203 // When OGL or D3D is enabled, it is necessary to
204 // replace the SurfaceData for each dynamic layout
205 // request so that the viewport stays in sync
206 // with the window bounds.
207 try {
208 replaceSurfaceData();
209 } catch (InvalidPipeException e) {
210 // REMIND: this is unlikely to occur for OGL, but
211 // what do we do if surface creation fails?
212 }
213 }
214
215 // Forcing a paint here doesn't seem to be necessary.
216 // paintDamagedAreaImmediately();
217 }
218 });
219 }
220
221 /*
222 * Paints any portion of the component that needs updating
223 * before the call returns (similar to the Win32 API UpdateWindow)
224 */
225 void paintDamagedAreaImmediately() {
226 // force Windows to send any pending WM_PAINT events so
227 // the damage area is updated on the Java side
228 updateWindow();
229 // make sure paint events are transferred to main event queue
230 // for coalescing
231 SunToolkit.flushPendingEvents();
232 // paint the damaged area
233 paintArea.paint(target, shouldClearRectBeforePaint());
234 }
235
236 synchronized native void updateWindow();
237
238 @Override
239 public void paint(Graphics g) {
240 ((Component)target).paint(g);
241 }
242
243 public void repaint(long tm, int x, int y, int width, int height) {
244 }
245
246 private static final double BANDING_DIVISOR = 4.0;
247 private native int[] createPrintedPixels(int srcX, int srcY,
248 int srcW, int srcH,
249 int alpha);
250 @Override
251 public void print(Graphics g) {
252
253 Component comp = (Component)target;
254
255 // To conserve memory usage, we will band the image.
256
257 int totalW = comp.getWidth();
258 int totalH = comp.getHeight();
259
260 int hInc = (int)(totalH / BANDING_DIVISOR);
261 if (hInc == 0) {
262 hInc = totalH;
263 }
264
265 for (int startY = 0; startY < totalH; startY += hInc) {
266 int endY = startY + hInc - 1;
267 if (endY >= totalH) {
268 endY = totalH - 1;
269 }
270 int h = endY - startY + 1;
271
272 Color bgColor = comp.getBackground();
273 int[] pix = createPrintedPixels(0, startY, totalW, h,
274 bgColor == null ? 255 : bgColor.getAlpha());
275 if (pix != null) {
276 BufferedImage bim = new BufferedImage(totalW, h,
277 BufferedImage.TYPE_INT_ARGB);
278 bim.setRGB(0, 0, totalW, h, pix, 0, totalW);
279 g.drawImage(bim, 0, startY, null);
280 bim.flush();
281 }
282 }
283
284 comp.print(g);
285 }
286
287 @Override
288 public void coalescePaintEvent(PaintEvent e) {
289 Rectangle r = e.getUpdateRect();
290 if (!(e instanceof IgnorePaintEvent)) {
291 paintArea.add(r, e.getID());
292 }
293
294 if (log.isLoggable(PlatformLogger.Level.FINEST)) {
295 switch(e.getID()) {
296 case PaintEvent.UPDATE:
297 log.finest("coalescePaintEvent: UPDATE: add: x = " +
298 r.x + ", y = " + r.y + ", width = " + r.width + ", height = " + r.height);
299 return;
300 case PaintEvent.PAINT:
301 log.finest("coalescePaintEvent: PAINT: add: x = " +
302 r.x + ", y = " + r.y + ", width = " + r.width + ", height = " + r.height);
303 return;
304 }
305 }
306 }
307
308 public synchronized native void reshape(int x, int y, int width, int height);
309
310 // returns true if the event has been handled and shouldn't be propagated
311 // though handleEvent method chain - e.g. WTextFieldPeer returns true
312 // on handling '\n' to prevent it from being passed to native code
313 public boolean handleJavaKeyEvent(KeyEvent e) { return false; }
314
315 public void handleJavaMouseEvent(MouseEvent e) {
316 switch (e.getID()) {
317 case MouseEvent.MOUSE_PRESSED:
318 // Note that Swing requests focus in its own mouse event handler.
319 if (target == e.getSource() &&
320 !((Component)target).isFocusOwner() &&
321 WKeyboardFocusManagerPeer.shouldFocusOnClick((Component)target))
322 {
323 WKeyboardFocusManagerPeer.requestFocusFor((Component)target,
324 FocusEvent.Cause.MOUSE_EVENT);
325 }
326 break;
327 }
328 }
329
330 native void nativeHandleEvent(AWTEvent e);
331
332 @Override
333 @SuppressWarnings("fallthrough")
334 public void handleEvent(AWTEvent e) {
335 int id = e.getID();
336
337 if ((e instanceof InputEvent) && !((InputEvent)e).isConsumed() &&
338 ((Component)target).isEnabled())
339 {
340 if (e instanceof MouseEvent && !(e instanceof MouseWheelEvent)) {
341 handleJavaMouseEvent((MouseEvent) e);
342 } else if (e instanceof KeyEvent) {
343 if (handleJavaKeyEvent((KeyEvent)e)) {
344 return;
345 }
346 }
347 }
348
349 switch(id) {
350 case PaintEvent.PAINT:
351 // Got native painting
352 paintPending = false;
353 // Fallthrough to next statement
354 case PaintEvent.UPDATE:
355 // Skip all painting while layouting and all UPDATEs
356 // while waiting for native paint
357 if (!isLayouting && ! paintPending) {
358 paintArea.paint(target,shouldClearRectBeforePaint());
359 }
360 return;
361 case FocusEvent.FOCUS_LOST:
362 case FocusEvent.FOCUS_GAINED:
363 handleJavaFocusEvent((FocusEvent)e);
364 default:
365 break;
366 }
367
368 // Call the native code
369 nativeHandleEvent(e);
370 }
371
372 void handleJavaFocusEvent(FocusEvent fe) {
373 if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
374 focusLog.finer(fe.toString());
375 }
376 setFocus(fe.getID() == FocusEvent.FOCUS_GAINED);
377 }
378
379 native void setFocus(boolean doSetFocus);
380
381 @Override
382 public Dimension getMinimumSize() {
383 return ((Component)target).getSize();
384 }
385
386 @Override
387 public Dimension getPreferredSize() {
388 return getMinimumSize();
389 }
390
391 // Do nothing for heavyweight implementation
392 @Override
393 public void layout() {}
394
395 public Rectangle getBounds() {
396 return ((Component)target).getBounds();
397 }
398
399 @Override
400 public boolean isFocusable() {
401 return false;
402 }
403
404 /*
405 * Return the GraphicsConfiguration associated with this peer, either
406 * the locally stored winGraphicsConfig, or that of the target Component.
407 */
408 @Override
409 public GraphicsConfiguration getGraphicsConfiguration() {
410 if (winGraphicsConfig != null) {
411 return winGraphicsConfig;
412 }
413 else {
414 // we don't need a treelock here, since
415 // Component.getGraphicsConfiguration() gets it itself.
416 return ((Component)target).getGraphicsConfiguration();
417 }
418 }
419
420 public SurfaceData getSurfaceData() {
421 return surfaceData;
422 }
423
424 /**
425 * Creates new surfaceData object and invalidates the previous
426 * surfaceData object.
427 * Replacing the surface data should never lock on any resources which are
428 * required by other threads which may have them and may require
429 * the tree-lock.
430 * This is a degenerate version of replaceSurfaceData(numBackBuffers), so
431 * just call that version with our current numBackBuffers.
432 */
433 public void replaceSurfaceData() {
434 replaceSurfaceData(this.numBackBuffers, this.backBufferCaps);
435 }
436
437 public void createScreenSurface(boolean isResize)
438 {
439 Win32GraphicsConfig gc = (Win32GraphicsConfig)getGraphicsConfiguration();
440 ScreenUpdateManager mgr = ScreenUpdateManager.getInstance();
441
442 surfaceData = mgr.createScreenSurface(gc, this, numBackBuffers, isResize);
443 }
444
445
446 /**
447 * Multi-buffer version of replaceSurfaceData. This version is called
448 * by createBuffers(), which needs to acquire the same locks in the same
449 * order, but also needs to perform additional functions inside the
450 * locks.
451 */
452 public void replaceSurfaceData(int newNumBackBuffers,
453 BufferCapabilities caps)
454 {
455 SurfaceData oldData = null;
456 VolatileImage oldBB = null;
457 synchronized(((Component)target).getTreeLock()) {
458 synchronized(this) {
459 if (pData == 0) {
460 return;
461 }
462 numBackBuffers = newNumBackBuffers;
463 ScreenUpdateManager mgr = ScreenUpdateManager.getInstance();
464 oldData = surfaceData;
465 mgr.dropScreenSurface(oldData);
466 createScreenSurface(true);
467 if (oldData != null) {
468 oldData.invalidate();
469 }
470
471 oldBB = backBuffer;
472 if (numBackBuffers > 0) {
473 // set the caps first, they're used when creating the bb
474 backBufferCaps = caps;
475 Win32GraphicsConfig gc =
476 (Win32GraphicsConfig)getGraphicsConfiguration();
477 backBuffer = gc.createBackBuffer(this);
478 } else if (backBuffer != null) {
479 backBufferCaps = null;
480 backBuffer = null;
481 }
482 }
483 }
484 // it would be better to do this before we create new ones,
485 // but then we'd run into deadlock issues
486 if (oldData != null) {
487 oldData.flush();
488 // null out the old data to make it collected faster
489 oldData = null;
490 }
491 if (oldBB != null) {
492 oldBB.flush();
493 // null out the old data to make it collected faster
494 oldData = null;
495 }
496 }
497
498 public void replaceSurfaceDataLater() {
499 Runnable r = new Runnable() {
500 @Override
501 public void run() {
502 // Shouldn't do anything if object is disposed in meanwhile
503 // No need for sync as disposeAction in Window is performed
504 // on EDT
505 if (!isDisposed()) {
506 try {
507 replaceSurfaceData();
508 } catch (InvalidPipeException e) {
509 // REMIND : what do we do if our surface creation failed?
510 }
511 }
512 }
513 };
514 Component c = (Component)target;
515 // Fix 6255371.
516 if (!PaintEventDispatcher.getPaintEventDispatcher().queueSurfaceDataReplacing(c, r)) {
517 postEvent(new InvocationEvent(c, r));
518 }
519 }
520
521 @Override
522 public boolean updateGraphicsData(GraphicsConfiguration gc) {
523 winGraphicsConfig = (Win32GraphicsConfig)gc;
524 try {
525 replaceSurfaceData();
526 } catch (InvalidPipeException e) {
527 // REMIND : what do we do if our surface creation failed?
528 }
529 return false;
530 }
531
532 //This will return null for Components not yet added to a Container
533 @Override
534 public ColorModel getColorModel() {
535 GraphicsConfiguration gc = getGraphicsConfiguration();
536 if (gc != null) {
537 return gc.getColorModel();
538 }
539 else {
540 return null;
541 }
542 }
543
544 //This will return null for Components not yet added to a Container
545 public ColorModel getDeviceColorModel() {
546 Win32GraphicsConfig gc =
547 (Win32GraphicsConfig)getGraphicsConfiguration();
548 if (gc != null) {
549 return gc.getDeviceColorModel();
550 }
551 else {
552 return null;
553 }
554 }
555
556 //Returns null for Components not yet added to a Container
557 public ColorModel getColorModel(int transparency) {
558 // return WToolkit.config.getColorModel(transparency);
559 GraphicsConfiguration gc = getGraphicsConfiguration();
560 if (gc != null) {
561 return gc.getColorModel(transparency);
562 }
563 else {
564 return null;
565 }
566 }
567
568 // fallback default font object
569 static final Font defaultFont = new Font(Font.DIALOG, Font.PLAIN, 12);
570
571 @Override
572 public Graphics getGraphics() {
573 if (isDisposed()) {
574 return null;
575 }
576
577 Component target = (Component)getTarget();
578 Window window = SunToolkit.getContainingWindow(target);
579 if (window != null) {
580 final WWindowPeer wpeer = AWTAccessor.getComponentAccessor()
581 .getPeer(window);
582 if (wpeer != null) {
583 Graphics g = wpeer.getTranslucentGraphics();
584 // getTranslucentGraphics() returns non-null value for non-opaque windows only
585 if (g != null) {
586 // Non-opaque windows do not support heavyweight children.
587 // Redirect all painting to the Window's Graphics instead.
588 // The caller is responsible for calling the
589 // WindowPeer.updateWindow() after painting has finished.
590 int x = 0, y = 0;
591 for (Component c = target; c != window; c = c.getParent()) {
592 x += c.getX();
593 y += c.getY();
594 }
595
596 g.translate(x, y);
597 g.clipRect(0, 0, target.getWidth(), target.getHeight());
598
599 return g;
600 }
601 }
602 }
603
604 SurfaceData surfaceData = this.surfaceData;
605 if (surfaceData != null) {
606 /* Fix for bug 4746122. Color and Font shouldn't be null */
607 Color bgColor = background;
608 if (bgColor == null) {
609 bgColor = SystemColor.window;
610 }
611 Color fgColor = foreground;
612 if (fgColor == null) {
613 fgColor = SystemColor.windowText;
614 }
615 Font font = this.font;
616 if (font == null) {
617 font = defaultFont;
618 }
619 ScreenUpdateManager mgr =
620 ScreenUpdateManager.getInstance();
621 return mgr.createGraphics(surfaceData, this, fgColor,
622 bgColor, font);
623 }
624 return null;
625 }
626 @Override
627 public FontMetrics getFontMetrics(Font font) {
628 return WFontMetrics.getFontMetrics(font);
629 }
630
631 private synchronized native void _dispose();
632 @Override
633 protected void disposeImpl() {
634 SurfaceData oldData = surfaceData;
635 surfaceData = null;
636 ScreenUpdateManager.getInstance().dropScreenSurface(oldData);
637 oldData.invalidate();
638 // remove from updater before calling targetDisposedPeer
639 WToolkit.targetDisposedPeer(target, this);
640 _dispose();
641 }
642
643 public void disposeLater() {
644 postEvent(new InvocationEvent(target, new Runnable() {
645 @Override
646 public void run() {
647 dispose();
648 }
649 }));
650 }
651
652 @Override
653 public synchronized void setForeground(Color c) {
654 foreground = c;
655 _setForeground(c.getRGB());
656 }
657
658 @Override
659 public synchronized void setBackground(Color c) {
660 background = c;
661 _setBackground(c.getRGB());
662 }
663
664 /**
665 * This method is intentionally not synchronized as it is called while
666 * holding other locks.
667 *
668 * @see sun.java2d.d3d.D3DScreenUpdateManager#validate
669 */
670 public Color getBackgroundNoSync() {
671 return background;
672 }
673
674 private native void _setForeground(int rgb);
675 private native void _setBackground(int rgb);
676
677 @Override
678 public synchronized void setFont(Font f) {
679 font = f;
680 _setFont(f);
681 }
682 synchronized native void _setFont(Font f);
683 @Override
684 public void updateCursorImmediately() {
685 WGlobalCursorManager.getCursorManager().updateCursorImmediately();
686 }
687
688 // TODO: consider moving it to KeyboardFocusManagerPeerImpl
689 @Override
690 public boolean requestFocus(Component lightweightChild, boolean temporary,
691 boolean focusedWindowChangeAllowed, long time,
692 FocusEvent.Cause cause)
693 {
694 if (WKeyboardFocusManagerPeer.
695 processSynchronousLightweightTransfer((Component)target, lightweightChild, temporary,
696 focusedWindowChangeAllowed, time))
697 {
698 return true;
699 }
700
701 int result = WKeyboardFocusManagerPeer
702 .shouldNativelyFocusHeavyweight((Component)target, lightweightChild,
703 temporary, focusedWindowChangeAllowed,
704 time, cause);
705
706 switch (result) {
707 case WKeyboardFocusManagerPeer.SNFH_FAILURE:
708 return false;
709 case WKeyboardFocusManagerPeer.SNFH_SUCCESS_PROCEED:
710 if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
711 focusLog.finer("Proceeding with request to " + lightweightChild + " in " + target);
712 }
713 Window parentWindow = SunToolkit.getContainingWindow((Component)target);
714 if (parentWindow == null) {
715 return rejectFocusRequestHelper("WARNING: Parent window is null");
716 }
717 final WWindowPeer wpeer = AWTAccessor.getComponentAccessor()
718 .getPeer(parentWindow);
719 if (wpeer == null) {
720 return rejectFocusRequestHelper("WARNING: Parent window's peer is null");
721 }
722 boolean res = wpeer.requestWindowFocus(cause);
723
724 if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
725 focusLog.finer("Requested window focus: " + res);
726 }
727 // If parent window can be made focused and has been made focused(synchronously)
728 // then we can proceed with children, otherwise we retreat.
729 if (!(res && parentWindow.isFocused())) {
730 return rejectFocusRequestHelper("Waiting for asynchronous processing of the request");
731 }
732 return WKeyboardFocusManagerPeer.deliverFocus(lightweightChild,
733 (Component)target,
734 temporary,
735 focusedWindowChangeAllowed,
736 time, cause);
737
738 case WKeyboardFocusManagerPeer.SNFH_SUCCESS_HANDLED:
739 // Either lightweight or excessive request - all events are generated.
740 return true;
741 }
742 return false;
743 }
744
745 private boolean rejectFocusRequestHelper(String logMsg) {
746 if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
747 focusLog.finer(logMsg);
748 }
749 WKeyboardFocusManagerPeer.removeLastFocusRequest((Component)target);
750 return false;
751 }
752
753 @Override
754 public Image createImage(ImageProducer producer) {
755 return new ToolkitImage(producer);
756 }
757
758 @Override
759 public Image createImage(int width, int height) {
760 Win32GraphicsConfig gc =
761 (Win32GraphicsConfig)getGraphicsConfiguration();
762 return gc.createAcceleratedImage((Component)target, width, height);
763 }
764
765 @Override
766 public VolatileImage createVolatileImage(int width, int height) {
767 return new SunVolatileImage((Component)target, width, height);
768 }
769
770 @Override
771 public boolean prepareImage(Image img, int w, int h, ImageObserver o) {
772 return Toolkit.getDefaultToolkit().prepareImage(img, w, h, o);
773 }
774
775 @Override
776 public int checkImage(Image img, int w, int h, ImageObserver o) {
777 return Toolkit.getDefaultToolkit().checkImage(img, w, h, o);
778 }
779
780 // Object overrides
781
782 public String toString() {
783 return getClass().getName() + "[" + target + "]";
784 }
785
786 // Toolkit & peer internals
787
788 private int updateX1, updateY1, updateX2, updateY2;
789
790 WComponentPeer(Component target) {
791 this.target = target;
792 this.paintArea = new RepaintArea();
793 create(getNativeParent());
794 // fix for 5088782: check if window object is created successfully
795 checkCreation();
796
797 createScreenSurface(false);
798 initialize();
799 start(); // Initialize enable/disable state, turn on callbacks
800 }
801 abstract void create(WComponentPeer parent);
802
803 /**
804 * Gets the native parent of this peer. We use the term "parent" explicitly,
805 * because we override the method in top-level window peer implementations.
806 *
807 * @return the parent container/owner of this peer.
808 */
809 WComponentPeer getNativeParent() {
810 Container parent = SunToolkit.getNativeContainer((Component) target);
811 return (WComponentPeer) WToolkit.targetToPeer(parent);
812 }
813
814 protected void checkCreation()
815 {
816 if ((hwnd == 0) || (pData == 0))
817 {
818 if (createError != null)
819 {
820 throw createError;
821 }
822 else
823 {
824 throw new InternalError("couldn't create component peer");
825 }
826 }
827 }
828
829 synchronized native void start();
830
831 void initialize() {
832 if (((Component)target).isVisible()) {
833 show(); // the wnd starts hidden
834 }
835 Color fg = ((Component)target).getForeground();
836 if (fg != null) {
837 setForeground(fg);
838 }
839 // Set background color in C++, to avoid inheriting a parent's color.
840 Font f = ((Component)target).getFont();
841 if (f != null) {
842 setFont(f);
843 }
844 if (! ((Component)target).isEnabled()) {
845 disable();
846 }
847 Rectangle r = ((Component)target).getBounds();
848 setBounds(r.x, r.y, r.width, r.height, SET_BOUNDS);
849 }
850
851 // Callbacks for window-system events to the frame
852
853 // Invoke a update() method call on the target
854 void handleRepaint(int x, int y, int w, int h) {
855 // Repaints are posted from updateClient now...
856 }
857
858 // Invoke a paint() method call on the target, after clearing the
859 // damaged area.
860 void handleExpose(int x, int y, int w, int h) {
861 // Bug ID 4081126 & 4129709 - can't do the clearRect() here,
862 // since it interferes with the java thread working in the
863 // same window on multi-processor NT machines.
864
865 postPaintIfNecessary(x, y, w, h);
866 }
867
868 /* Invoke a paint() method call on the target, without clearing the
869 * damaged area. This is normally called by a native control after
870 * it has painted itself.
871 *
872 * NOTE: This is called on the privileged toolkit thread. Do not
873 * call directly into user code using this thread!
874 */
875 public void handlePaint(int x, int y, int w, int h) {
876 postPaintIfNecessary(x, y, w, h);
877 }
878
879 private void postPaintIfNecessary(int x, int y, int w, int h) {
880 if ( !AWTAccessor.getComponentAccessor().getIgnoreRepaint( (Component) target) ) {
881 PaintEvent event = PaintEventDispatcher.getPaintEventDispatcher().
882 createPaintEvent((Component)target, x, y, w, h);
883 if (event != null) {
884 postEvent(event);
885 }
886 }
887 }
888
889 /*
890 * Post an event. Queue it for execution by the callback thread.
891 */
892 void postEvent(AWTEvent event) {
893 preprocessPostEvent(event);
894 WToolkit.postEvent(WToolkit.targetToAppContext(target), event);
895 }
896
897 void preprocessPostEvent(AWTEvent event) {}
898
899 // Routines to support deferred window positioning.
900 public void beginLayout() {
901 // Skip all painting till endLayout
902 isLayouting = true;
903 }
904
905 public void endLayout() {
906 if(!paintArea.isEmpty() && !paintPending &&
907 !((Component)target).getIgnoreRepaint()) {
908 // if not waiting for native painting repaint damaged area
909 postEvent(new PaintEvent((Component)target, PaintEvent.PAINT,
910 new Rectangle()));
911 }
912 isLayouting = false;
913 }
914
915 public native void beginValidate();
916 public native void endValidate();
917
918 /**
919 * register a DropTarget with this native peer
920 */
921
922 @Override
923 public synchronized void addDropTarget(DropTarget dt) {
924 if (nDropTargets == 0) {
925 nativeDropTargetContext = addNativeDropTarget();
926 }
927 nDropTargets++;
928 }
929
930 /**
931 * unregister a DropTarget with this native peer
932 */
933
934 @Override
935 public synchronized void removeDropTarget(DropTarget dt) {
936 nDropTargets--;
937 if (nDropTargets == 0) {
938 removeNativeDropTarget();
939 nativeDropTargetContext = 0;
940 }
941 }
942
943 /**
944 * add the native peer's AwtDropTarget COM object
945 * @return reference to AwtDropTarget object
946 */
947
948 native long addNativeDropTarget();
949
950 /**
951 * remove the native peer's AwtDropTarget COM object
952 */
953
954 native void removeNativeDropTarget();
955 native boolean nativeHandlesWheelScrolling();
956
957 @Override
958 public boolean handlesWheelScrolling() {
959 // should this be cached?
960 return nativeHandlesWheelScrolling();
961 }
962
963 // Returns true if we are inside begin/endLayout and
964 // are waiting for native painting
965 public boolean isPaintPending() {
966 return paintPending && isLayouting;
967 }
968
969 /**
970 * The following multibuffering-related methods delegate to our
971 * associated GraphicsConfig (Win or WGL) to handle the appropriate
972 * native windowing system specific actions.
973 */
974
975 @Override
976 public void createBuffers(int numBuffers, BufferCapabilities caps)
977 throws AWTException
978 {
979 Win32GraphicsConfig gc =
980 (Win32GraphicsConfig)getGraphicsConfiguration();
981 gc.assertOperationSupported((Component)target, numBuffers, caps);
982
983 // Re-create the primary surface with the new number of back buffers
984 try {
985 replaceSurfaceData(numBuffers - 1, caps);
986 } catch (InvalidPipeException e) {
987 throw new AWTException(e.getMessage());
988 }
989 }
990
991 @Override
992 public void destroyBuffers() {
993 replaceSurfaceData(0, null);
994 }
995
996 @Override
997 public void flip(int x1, int y1, int x2, int y2,
998 BufferCapabilities.FlipContents flipAction)
999 {
1000 VolatileImage backBuffer = this.backBuffer;
1001 if (backBuffer == null) {
1002 throw new IllegalStateException("Buffers have not been created");
1003 }
1004 Win32GraphicsConfig gc =
1005 (Win32GraphicsConfig)getGraphicsConfiguration();
1006 gc.flip(this, (Component)target, backBuffer, x1, y1, x2, y2, flipAction);
1007 }
1008
1009 @Override
1010 public synchronized Image getBackBuffer() {
1011 Image backBuffer = this.backBuffer;
1012 if (backBuffer == null) {
1013 throw new IllegalStateException("Buffers have not been created");
1014 }
1015 return backBuffer;
1016 }
1017 public BufferCapabilities getBackBufferCaps() {
1018 return backBufferCaps;
1019 }
1020 public int getBackBuffersNum() {
1021 return numBackBuffers;
1022 }
1023
1024 /* override and return false on components that DO NOT require
1025 a clearRect() before painting (i.e. native components) */
1026 public boolean shouldClearRectBeforePaint() {
1027 return true;
1028 }
1029
1030 native void pSetParent(ComponentPeer newNativeParent);
1031
1032 /**
1033 * @see java.awt.peer.ComponentPeer#reparent
1034 */
1035 @Override
1036 public void reparent(ContainerPeer newNativeParent) {
1037 pSetParent(newNativeParent);
1038 }
1039
1040 /**
1041 * @see java.awt.peer.ComponentPeer#isReparentSupported
1042 */
1043 @Override
1044 public boolean isReparentSupported() {
1045 return true;
1046 }
1047
1048 public void setBoundsOperation(int operation) {
1049 }
1050
1051 private volatile boolean isAccelCapable = true;
1052
1053 /**
1054 * Returns whether this component is capable of being hw accelerated.
1055 * More specifically, whether rendering to this component or a
1056 * BufferStrategy's back-buffer for this component can be hw accelerated.
1057 *
1058 * Conditions which could prevent hw acceleration include the toplevel
1059 * window containing this component being
1060 * {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
1061 * PERPIXEL_TRANSLUCENT}.
1062 *
1063 * Another condition is if Xor paint mode was detected when rendering
1064 * to an on-screen accelerated surface associated with this peer.
1065 * in this case both on- and off-screen acceleration for this peer is
1066 * disabled.
1067 *
1068 * @return {@code true} if this component is capable of being hw
1069 * accelerated, {@code false} otherwise
1070 * @see GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
1071 */
1072 public boolean isAccelCapable() {
1073 if (!isAccelCapable ||
1074 !isContainingTopLevelAccelCapable((Component)target))
1075 {
1076 return false;
1077 }
1078
1079 boolean isTranslucent =
1080 SunToolkit.isContainingTopLevelTranslucent((Component)target);
1081 // D3D/OGL and translucent windows interacted poorly in Windows XP;
1082 // these problems are no longer present in Vista
1083 return !isTranslucent || Win32GraphicsEnvironment.isVistaOS();
1084 }
1085
1086 /**
1087 * Disables acceleration for this peer.
1088 */
1089 public void disableAcceleration() {
1090 isAccelCapable = false;
1091 }
1092
1093
1094 native void setRectangularShape(int lox, int loy, int hix, int hiy,
1095 Region region);
1096
1097
1098 // REMIND: Temp workaround for issues with using HW acceleration
1099 // in the browser on Vista when DWM is enabled.
1100 // @return true if the toplevel container is not an EmbeddedFrame or
1101 // if this EmbeddedFrame is acceleration capable, false otherwise
1102 private static final boolean isContainingTopLevelAccelCapable(Component c) {
1103 while (c != null && !(c instanceof WEmbeddedFrame)) {
1104 c = c.getParent();
1105 }
1106 if (c == null) {
1107 return true;
1108 }
1109 final WEmbeddedFramePeer peer = AWTAccessor.getComponentAccessor()
1110 .getPeer(c);
1111 return peer.isAccelCapable();
1112 }
1113
1114 /**
1115 * Applies the shape to the native component window.
1116 * @since 1.7
1117 */
1118 @Override
1119 public void applyShape(Region shape) {
1120 if (shapeLog.isLoggable(PlatformLogger.Level.FINER)) {
1121 shapeLog.finer("*** INFO: Setting shape: PEER: " + this
1122 + "; TARGET: " + target
1123 + "; SHAPE: " + shape);
1124 }
1125
1126 if (shape != null) {
1127 AffineTransform tx = winGraphicsConfig.getDefaultTransform();
1128 double scaleX = tx.getScaleX();
1129 double scaleY = tx.getScaleY();
1130 if (scaleX != 1 || scaleY != 1) {
1131 shape = shape.getScaledRegion(scaleX, scaleY);
1132 }
1133 setRectangularShape(shape.getLoX(), shape.getLoY(), shape.getHiX(), shape.getHiY(),
1134 (shape.isRectangular() ? null : shape));
1135 } else {
1136 setRectangularShape(0, 0, 0, 0, null);
1137 }
1138 }
1139
1140 /**
1141 * Lowers this component at the bottom of the above component. If the above parameter
1142 * is null then the method places this component at the top of the Z-order.
1143 */
1144 @Override
1145 public void setZOrder(ComponentPeer above) {
1146 long aboveHWND = (above != null) ? ((WComponentPeer)above).getHWnd() : 0;
1147
1148 setZOrder(aboveHWND);
1149 }
1150
1151 private native void setZOrder(long above);
1152
1153 public boolean isLightweightFramePeer() {
1154 return false;
1155 }
1156 }