2
|
1 |
/*
|
|
2 |
* Copyright 1997-2007 Sun Microsystems, Inc. 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. Sun designates this
|
|
8 |
* particular file as subject to the "Classpath" exception as provided
|
|
9 |
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
22 |
* CA 95054 USA or visit www.sun.com if you need additional information or
|
|
23 |
* have any questions.
|
|
24 |
*/
|
|
25 |
package javax.swing;
|
|
26 |
|
|
27 |
|
|
28 |
import java.awt.*;
|
|
29 |
import java.awt.event.*;
|
|
30 |
import java.awt.peer.ComponentPeer;
|
|
31 |
import java.awt.peer.ContainerPeer;
|
|
32 |
import java.awt.image.VolatileImage;
|
|
33 |
import java.security.AccessController;
|
|
34 |
import java.util.*;
|
|
35 |
import java.applet.*;
|
|
36 |
|
|
37 |
import sun.awt.AppContext;
|
|
38 |
import sun.awt.DisplayChangedListener;
|
|
39 |
import sun.awt.SunToolkit;
|
|
40 |
import sun.java2d.SunGraphicsEnvironment;
|
|
41 |
import sun.security.action.GetPropertyAction;
|
|
42 |
|
|
43 |
|
|
44 |
/**
|
|
45 |
* This class manages repaint requests, allowing the number
|
|
46 |
* of repaints to be minimized, for example by collapsing multiple
|
|
47 |
* requests into a single repaint for members of a component tree.
|
|
48 |
* <p>
|
|
49 |
* As of 1.6 <code>RepaintManager</code> handles repaint requests
|
|
50 |
* for Swing's top level components (<code>JApplet</code>,
|
|
51 |
* <code>JWindow</code>, <code>JFrame</code> and <code>JDialog</code>).
|
|
52 |
* Any calls to <code>repaint</code> on one of these will call into the
|
|
53 |
* appropriate <code>addDirtyRegion</code> method.
|
|
54 |
*
|
|
55 |
* @author Arnaud Weber
|
|
56 |
*/
|
|
57 |
public class RepaintManager
|
|
58 |
{
|
|
59 |
/**
|
|
60 |
* Whether or not the RepaintManager should handle paint requests
|
|
61 |
* for top levels.
|
|
62 |
*/
|
|
63 |
static final boolean HANDLE_TOP_LEVEL_PAINT;
|
|
64 |
|
|
65 |
private static final short BUFFER_STRATEGY_NOT_SPECIFIED = 0;
|
|
66 |
private static final short BUFFER_STRATEGY_SPECIFIED_ON = 1;
|
|
67 |
private static final short BUFFER_STRATEGY_SPECIFIED_OFF = 2;
|
|
68 |
|
|
69 |
private static final short BUFFER_STRATEGY_TYPE;
|
|
70 |
|
|
71 |
/**
|
|
72 |
* Maps from GraphicsConfiguration to VolatileImage.
|
|
73 |
*/
|
|
74 |
private Map<GraphicsConfiguration,VolatileImage> volatileMap = new
|
|
75 |
HashMap<GraphicsConfiguration,VolatileImage>(1);
|
|
76 |
|
|
77 |
//
|
|
78 |
// As of 1.6 Swing handles scheduling of paint events from native code.
|
|
79 |
// That is, SwingPaintEventDispatcher is invoked on the toolkit thread,
|
|
80 |
// which in turn invokes nativeAddDirtyRegion. Because this is invoked
|
|
81 |
// from the native thread we can not invoke any public methods and so
|
|
82 |
// we introduce these added maps. So, any time nativeAddDirtyRegion is
|
|
83 |
// invoked the region is added to hwDirtyComponents and a work request
|
|
84 |
// is scheduled. When the work request is processed all entries in
|
|
85 |
// this map are pushed to the real map (dirtyComponents) and then
|
|
86 |
// painted with the rest of the components.
|
|
87 |
//
|
|
88 |
private Map<Container,Rectangle> hwDirtyComponents;
|
|
89 |
|
|
90 |
private Map<Component,Rectangle> dirtyComponents;
|
|
91 |
private Map<Component,Rectangle> tmpDirtyComponents;
|
|
92 |
private java.util.List<Component> invalidComponents;
|
|
93 |
|
|
94 |
// List of Runnables that need to be processed before painting from AWT.
|
|
95 |
private java.util.List<Runnable> runnableList;
|
|
96 |
|
|
97 |
boolean doubleBufferingEnabled = true;
|
|
98 |
|
|
99 |
private Dimension doubleBufferMaxSize;
|
|
100 |
|
|
101 |
// Support for both the standard and volatile offscreen buffers exists to
|
|
102 |
// provide backwards compatibility for the [rare] programs which may be
|
|
103 |
// calling getOffScreenBuffer() and not expecting to get a VolatileImage.
|
|
104 |
// Swing internally is migrating to use *only* the volatile image buffer.
|
|
105 |
|
|
106 |
// Support for standard offscreen buffer
|
|
107 |
//
|
|
108 |
DoubleBufferInfo standardDoubleBuffer;
|
|
109 |
|
|
110 |
/**
|
|
111 |
* Object responsible for hanlding core paint functionality.
|
|
112 |
*/
|
|
113 |
private PaintManager paintManager;
|
|
114 |
|
|
115 |
private static final Object repaintManagerKey = RepaintManager.class;
|
|
116 |
|
|
117 |
// Whether or not a VolatileImage should be used for double-buffered painting
|
|
118 |
static boolean volatileImageBufferEnabled = true;
|
|
119 |
/**
|
|
120 |
* Value of the system property awt.nativeDoubleBuffering.
|
|
121 |
*/
|
|
122 |
private static boolean nativeDoubleBuffering;
|
|
123 |
|
|
124 |
// The maximum number of times Swing will attempt to use the VolatileImage
|
|
125 |
// buffer during a paint operation.
|
|
126 |
private static final int VOLATILE_LOOP_MAX = 2;
|
|
127 |
|
|
128 |
/**
|
|
129 |
* Number of <code>beginPaint</code> that have been invoked.
|
|
130 |
*/
|
|
131 |
private int paintDepth = 0;
|
|
132 |
|
|
133 |
/**
|
|
134 |
* Type of buffer strategy to use. Will be one of the BUFFER_STRATEGY_
|
|
135 |
* constants.
|
|
136 |
*/
|
|
137 |
private short bufferStrategyType;
|
|
138 |
|
|
139 |
//
|
|
140 |
// BufferStrategyPaintManager has the unique characteristic that it
|
|
141 |
// must deal with the buffer being lost while painting to it. For
|
|
142 |
// example, if we paint a component and show it and the buffer has
|
|
143 |
// become lost we must repaint the whole window. To deal with that
|
|
144 |
// the PaintManager calls into repaintRoot, and if we're still in
|
|
145 |
// the process of painting the repaintRoot field is set to the JRootPane
|
|
146 |
// and after the current JComponent.paintImmediately call finishes
|
|
147 |
// paintImmediately will be invoked on the repaintRoot. In this
|
|
148 |
// way we don't try to show garbage to the screen.
|
|
149 |
//
|
|
150 |
/**
|
|
151 |
* True if we're in the process of painting the dirty regions. This is
|
|
152 |
* set to true in <code>paintDirtyRegions</code>.
|
|
153 |
*/
|
|
154 |
private boolean painting;
|
|
155 |
/**
|
|
156 |
* If the PaintManager calls into repaintRoot during painting this field
|
|
157 |
* will be set to the root.
|
|
158 |
*/
|
|
159 |
private JComponent repaintRoot;
|
|
160 |
|
|
161 |
/**
|
|
162 |
* The Thread that has initiated painting. If null it
|
|
163 |
* indicates painting is not currently in progress.
|
|
164 |
*/
|
|
165 |
private Thread paintThread;
|
|
166 |
|
|
167 |
/**
|
|
168 |
* Runnable used to process all repaint/revalidate requests.
|
|
169 |
*/
|
|
170 |
private final ProcessingRunnable processingRunnable;
|
|
171 |
|
|
172 |
|
|
173 |
static {
|
|
174 |
volatileImageBufferEnabled = "true".equals(AccessController.
|
|
175 |
doPrivileged(new GetPropertyAction(
|
|
176 |
"swing.volatileImageBufferEnabled", "true")));
|
|
177 |
boolean headless = GraphicsEnvironment.isHeadless();
|
|
178 |
if (volatileImageBufferEnabled && headless) {
|
|
179 |
volatileImageBufferEnabled = false;
|
|
180 |
}
|
|
181 |
nativeDoubleBuffering = "true".equals(AccessController.doPrivileged(
|
|
182 |
new GetPropertyAction("awt.nativeDoubleBuffering")));
|
|
183 |
String bs = AccessController.doPrivileged(
|
|
184 |
new GetPropertyAction("swing.bufferPerWindow"));
|
|
185 |
if (headless) {
|
|
186 |
BUFFER_STRATEGY_TYPE = BUFFER_STRATEGY_SPECIFIED_OFF;
|
|
187 |
}
|
|
188 |
else if (bs == null) {
|
|
189 |
BUFFER_STRATEGY_TYPE = BUFFER_STRATEGY_NOT_SPECIFIED;
|
|
190 |
}
|
|
191 |
else if ("true".equals(bs)) {
|
|
192 |
BUFFER_STRATEGY_TYPE = BUFFER_STRATEGY_SPECIFIED_ON;
|
|
193 |
}
|
|
194 |
else {
|
|
195 |
BUFFER_STRATEGY_TYPE = BUFFER_STRATEGY_SPECIFIED_OFF;
|
|
196 |
}
|
|
197 |
HANDLE_TOP_LEVEL_PAINT = "true".equals(AccessController.doPrivileged(
|
|
198 |
new GetPropertyAction("swing.handleTopLevelPaint", "true")));
|
|
199 |
GraphicsEnvironment ge = GraphicsEnvironment.
|
|
200 |
getLocalGraphicsEnvironment();
|
|
201 |
if (ge instanceof SunGraphicsEnvironment) {
|
|
202 |
((SunGraphicsEnvironment)ge).addDisplayChangedListener(
|
|
203 |
new DisplayChangedHandler());
|
|
204 |
}
|
|
205 |
}
|
|
206 |
|
|
207 |
/**
|
|
208 |
* Return the RepaintManager for the calling thread given a Component.
|
|
209 |
*
|
|
210 |
* @param c a Component -- unused in the default implementation, but could
|
|
211 |
* be used by an overridden version to return a different RepaintManager
|
|
212 |
* depending on the Component
|
|
213 |
* @return the RepaintManager object
|
|
214 |
*/
|
|
215 |
public static RepaintManager currentManager(Component c) {
|
|
216 |
// Note: DisplayChangedRunnable passes in null as the component, so if
|
|
217 |
// component is ever used to determine the current
|
|
218 |
// RepaintManager, DisplayChangedRunnable will need to be modified
|
|
219 |
// accordingly.
|
|
220 |
return currentManager(AppContext.getAppContext());
|
|
221 |
}
|
|
222 |
|
|
223 |
/**
|
|
224 |
* Returns the RepaintManager for the specified AppContext. If
|
|
225 |
* a RepaintManager has not been created for the specified
|
|
226 |
* AppContext this will return null.
|
|
227 |
*/
|
|
228 |
static RepaintManager currentManager(AppContext appContext) {
|
|
229 |
RepaintManager rm = (RepaintManager)appContext.get(repaintManagerKey);
|
|
230 |
if (rm == null) {
|
|
231 |
rm = new RepaintManager(BUFFER_STRATEGY_TYPE);
|
|
232 |
appContext.put(repaintManagerKey, rm);
|
|
233 |
}
|
|
234 |
return rm;
|
|
235 |
}
|
|
236 |
|
|
237 |
/**
|
|
238 |
* Return the RepaintManager for the calling thread given a JComponent.
|
|
239 |
* <p>
|
|
240 |
* Note: This method exists for backward binary compatibility with earlier
|
|
241 |
* versions of the Swing library. It simply returns the result returned by
|
|
242 |
* {@link #currentManager(Component)}.
|
|
243 |
*
|
|
244 |
* @param c a JComponent -- unused
|
|
245 |
* @return the RepaintManager object
|
|
246 |
*/
|
|
247 |
public static RepaintManager currentManager(JComponent c) {
|
|
248 |
return currentManager((Component)c);
|
|
249 |
}
|
|
250 |
|
|
251 |
|
|
252 |
/**
|
|
253 |
* Set the RepaintManager that should be used for the calling
|
|
254 |
* thread. <b>aRepaintManager</b> will become the current RepaintManager
|
|
255 |
* for the calling thread's thread group.
|
|
256 |
* @param aRepaintManager the RepaintManager object to use
|
|
257 |
*/
|
|
258 |
public static void setCurrentManager(RepaintManager aRepaintManager) {
|
|
259 |
if (aRepaintManager != null) {
|
|
260 |
SwingUtilities.appContextPut(repaintManagerKey, aRepaintManager);
|
|
261 |
} else {
|
|
262 |
SwingUtilities.appContextRemove(repaintManagerKey);
|
|
263 |
}
|
|
264 |
}
|
|
265 |
|
|
266 |
/**
|
|
267 |
* Create a new RepaintManager instance. You rarely call this constructor.
|
|
268 |
* directly. To get the default RepaintManager, use
|
|
269 |
* RepaintManager.currentManager(JComponent) (normally "this").
|
|
270 |
*/
|
|
271 |
public RepaintManager() {
|
|
272 |
// Because we can't know what a subclass is doing with the
|
|
273 |
// volatile image we immediately punt in subclasses. If this
|
|
274 |
// poses a problem we'll need a more sophisticated detection algorithm,
|
|
275 |
// or API.
|
|
276 |
this(BUFFER_STRATEGY_SPECIFIED_OFF);
|
|
277 |
}
|
|
278 |
|
|
279 |
private RepaintManager(short bufferStrategyType) {
|
|
280 |
// If native doublebuffering is being used, do NOT use
|
|
281 |
// Swing doublebuffering.
|
|
282 |
doubleBufferingEnabled = !nativeDoubleBuffering;
|
|
283 |
synchronized(this) {
|
|
284 |
dirtyComponents = new IdentityHashMap<Component,Rectangle>();
|
|
285 |
tmpDirtyComponents = new IdentityHashMap<Component,Rectangle>();
|
|
286 |
this.bufferStrategyType = bufferStrategyType;
|
|
287 |
hwDirtyComponents = new IdentityHashMap<Container,Rectangle>();
|
|
288 |
}
|
|
289 |
processingRunnable = new ProcessingRunnable();
|
|
290 |
}
|
|
291 |
|
|
292 |
private void displayChanged() {
|
|
293 |
clearImages();
|
|
294 |
}
|
|
295 |
|
|
296 |
/**
|
|
297 |
* Mark the component as in need of layout and queue a runnable
|
|
298 |
* for the event dispatching thread that will validate the components
|
|
299 |
* first isValidateRoot() ancestor.
|
|
300 |
*
|
|
301 |
* @see JComponent#isValidateRoot
|
|
302 |
* @see #removeInvalidComponent
|
|
303 |
*/
|
|
304 |
public synchronized void addInvalidComponent(JComponent invalidComponent)
|
|
305 |
{
|
|
306 |
Component validateRoot = null;
|
|
307 |
|
|
308 |
/* Find the first JComponent ancestor of this component whose
|
|
309 |
* isValidateRoot() method returns true.
|
|
310 |
*/
|
|
311 |
for(Component c = invalidComponent; c != null; c = c.getParent()) {
|
|
312 |
if ((c instanceof CellRendererPane) || (c.getPeer() == null)) {
|
|
313 |
return;
|
|
314 |
}
|
|
315 |
if ((c instanceof JComponent) && (((JComponent)c).isValidateRoot())) {
|
|
316 |
validateRoot = c;
|
|
317 |
break;
|
|
318 |
}
|
|
319 |
}
|
|
320 |
|
|
321 |
/* There's no validateRoot to apply validate to, so we're done.
|
|
322 |
*/
|
|
323 |
if (validateRoot == null) {
|
|
324 |
return;
|
|
325 |
}
|
|
326 |
|
|
327 |
/* If the validateRoot and all of its ancestors aren't visible
|
|
328 |
* then we don't do anything. While we're walking up the tree
|
|
329 |
* we find the root Window or Applet.
|
|
330 |
*/
|
|
331 |
Component root = null;
|
|
332 |
|
|
333 |
for(Component c = validateRoot; c != null; c = c.getParent()) {
|
|
334 |
if (!c.isVisible() || (c.getPeer() == null)) {
|
|
335 |
return;
|
|
336 |
}
|
|
337 |
if ((c instanceof Window) || (c instanceof Applet)) {
|
|
338 |
root = c;
|
|
339 |
break;
|
|
340 |
}
|
|
341 |
}
|
|
342 |
|
|
343 |
if (root == null) {
|
|
344 |
return;
|
|
345 |
}
|
|
346 |
|
|
347 |
/* Lazily create the invalidateComponents vector and add the
|
|
348 |
* validateRoot if it's not there already. If this validateRoot
|
|
349 |
* is already in the vector, we're done.
|
|
350 |
*/
|
|
351 |
if (invalidComponents == null) {
|
|
352 |
invalidComponents = new ArrayList<Component>();
|
|
353 |
}
|
|
354 |
else {
|
|
355 |
int n = invalidComponents.size();
|
|
356 |
for(int i = 0; i < n; i++) {
|
|
357 |
if(validateRoot == invalidComponents.get(i)) {
|
|
358 |
return;
|
|
359 |
}
|
|
360 |
}
|
|
361 |
}
|
|
362 |
invalidComponents.add(validateRoot);
|
|
363 |
|
|
364 |
// Queue a Runnable to invoke paintDirtyRegions and
|
|
365 |
// validateInvalidComponents.
|
|
366 |
scheduleProcessingRunnable();
|
|
367 |
}
|
|
368 |
|
|
369 |
|
|
370 |
/**
|
|
371 |
* Remove a component from the list of invalid components.
|
|
372 |
*
|
|
373 |
* @see #addInvalidComponent
|
|
374 |
*/
|
|
375 |
public synchronized void removeInvalidComponent(JComponent component) {
|
|
376 |
if(invalidComponents != null) {
|
|
377 |
int index = invalidComponents.indexOf(component);
|
|
378 |
if(index != -1) {
|
|
379 |
invalidComponents.remove(index);
|
|
380 |
}
|
|
381 |
}
|
|
382 |
}
|
|
383 |
|
|
384 |
|
|
385 |
/**
|
|
386 |
* Add a component in the list of components that should be refreshed.
|
|
387 |
* If <i>c</i> already has a dirty region, the rectangle <i>(x,y,w,h)</i>
|
|
388 |
* will be unioned with the region that should be redrawn.
|
|
389 |
*
|
|
390 |
* @see JComponent#repaint
|
|
391 |
*/
|
|
392 |
private void addDirtyRegion0(Container c, int x, int y, int w, int h) {
|
|
393 |
/* Special cases we don't have to bother with.
|
|
394 |
*/
|
|
395 |
if ((w <= 0) || (h <= 0) || (c == null)) {
|
|
396 |
return;
|
|
397 |
}
|
|
398 |
|
|
399 |
if ((c.getWidth() <= 0) || (c.getHeight() <= 0)) {
|
|
400 |
return;
|
|
401 |
}
|
|
402 |
|
|
403 |
if (extendDirtyRegion(c, x, y, w, h)) {
|
|
404 |
// Component was already marked as dirty, region has been
|
|
405 |
// extended, no need to continue.
|
|
406 |
return;
|
|
407 |
}
|
|
408 |
|
|
409 |
/* Make sure that c and all it ancestors (up to an Applet or
|
|
410 |
* Window) are visible. This loop has the same effect as
|
|
411 |
* checking c.isShowing() (and note that it's still possible
|
|
412 |
* that c is completely obscured by an opaque ancestor in
|
|
413 |
* the specified rectangle).
|
|
414 |
*/
|
|
415 |
Component root = null;
|
|
416 |
|
|
417 |
// Note: We can't synchronize around this, Frame.getExtendedState
|
|
418 |
// is synchronized so that if we were to synchronize around this
|
|
419 |
// it could lead to the possibility of getting locks out
|
|
420 |
// of order and deadlocking.
|
|
421 |
for (Container p = c; p != null; p = p.getParent()) {
|
|
422 |
if (!p.isVisible() || (p.getPeer() == null)) {
|
|
423 |
return;
|
|
424 |
}
|
|
425 |
if ((p instanceof Window) || (p instanceof Applet)) {
|
|
426 |
// Iconified frames are still visible!
|
|
427 |
if (p instanceof Frame &&
|
|
428 |
(((Frame)p).getExtendedState() & Frame.ICONIFIED) ==
|
|
429 |
Frame.ICONIFIED) {
|
|
430 |
return;
|
|
431 |
}
|
|
432 |
root = p;
|
|
433 |
break;
|
|
434 |
}
|
|
435 |
}
|
|
436 |
|
|
437 |
if (root == null) return;
|
|
438 |
|
|
439 |
synchronized(this) {
|
|
440 |
if (extendDirtyRegion(c, x, y, w, h)) {
|
|
441 |
// In between last check and this check another thread
|
|
442 |
// queued up runnable, can bail here.
|
|
443 |
return;
|
|
444 |
}
|
|
445 |
dirtyComponents.put(c, new Rectangle(x, y, w, h));
|
|
446 |
}
|
|
447 |
|
|
448 |
// Queue a Runnable to invoke paintDirtyRegions and
|
|
449 |
// validateInvalidComponents.
|
|
450 |
scheduleProcessingRunnable();
|
|
451 |
}
|
|
452 |
|
|
453 |
/**
|
|
454 |
* Add a component in the list of components that should be refreshed.
|
|
455 |
* If <i>c</i> already has a dirty region, the rectangle <i>(x,y,w,h)</i>
|
|
456 |
* will be unioned with the region that should be redrawn.
|
|
457 |
*
|
|
458 |
* @param c Component to repaint, null results in nothing happening.
|
|
459 |
* @param x X coordinate of the region to repaint
|
|
460 |
* @param y Y coordinate of the region to repaint
|
|
461 |
* @param w Width of the region to repaint
|
|
462 |
* @param h Height of the region to repaint
|
|
463 |
* @see JComponent#repaint
|
|
464 |
*/
|
|
465 |
public void addDirtyRegion(JComponent c, int x, int y, int w, int h)
|
|
466 |
{
|
|
467 |
addDirtyRegion0(c, x, y, w, h);
|
|
468 |
}
|
|
469 |
|
|
470 |
/**
|
|
471 |
* Adds <code>window</code> to the list of <code>Component</code>s that
|
|
472 |
* need to be repainted.
|
|
473 |
*
|
|
474 |
* @param window Window to repaint, null results in nothing happening.
|
|
475 |
* @param x X coordinate of the region to repaint
|
|
476 |
* @param y Y coordinate of the region to repaint
|
|
477 |
* @param w Width of the region to repaint
|
|
478 |
* @param h Height of the region to repaint
|
|
479 |
* @see JFrame#repaint
|
|
480 |
* @see JWindow#repaint
|
|
481 |
* @see JDialog#repaint
|
|
482 |
* @since 1.6
|
|
483 |
*/
|
|
484 |
public void addDirtyRegion(Window window, int x, int y, int w, int h) {
|
|
485 |
addDirtyRegion0(window, x, y, w, h);
|
|
486 |
}
|
|
487 |
|
|
488 |
/**
|
|
489 |
* Adds <code>applet</code> to the list of <code>Component</code>s that
|
|
490 |
* need to be repainted.
|
|
491 |
*
|
|
492 |
* @param applet Applet to repaint, null results in nothing happening.
|
|
493 |
* @param x X coordinate of the region to repaint
|
|
494 |
* @param y Y coordinate of the region to repaint
|
|
495 |
* @param w Width of the region to repaint
|
|
496 |
* @param h Height of the region to repaint
|
|
497 |
* @see JApplet#repaint
|
|
498 |
* @since 1.6
|
|
499 |
*/
|
|
500 |
public void addDirtyRegion(Applet applet, int x, int y, int w, int h) {
|
|
501 |
addDirtyRegion0(applet, x, y, w, h);
|
|
502 |
}
|
|
503 |
|
|
504 |
void scheduleHeavyWeightPaints() {
|
|
505 |
Map<Container,Rectangle> hws;
|
|
506 |
|
|
507 |
synchronized(this) {
|
|
508 |
if (hwDirtyComponents.size() == 0) {
|
|
509 |
return;
|
|
510 |
}
|
|
511 |
hws = hwDirtyComponents;
|
|
512 |
hwDirtyComponents = new IdentityHashMap<Container,Rectangle>();
|
|
513 |
}
|
|
514 |
for (Container hw : hws.keySet()) {
|
|
515 |
Rectangle dirty = hws.get(hw);
|
|
516 |
if (hw instanceof Window) {
|
|
517 |
addDirtyRegion((Window)hw, dirty.x, dirty.y,
|
|
518 |
dirty.width, dirty.height);
|
|
519 |
}
|
|
520 |
else if (hw instanceof Applet) {
|
|
521 |
addDirtyRegion((Applet)hw, dirty.x, dirty.y,
|
|
522 |
dirty.width, dirty.height);
|
|
523 |
}
|
|
524 |
else { // SwingHeavyWeight
|
|
525 |
addDirtyRegion0(hw, dirty.x, dirty.y,
|
|
526 |
dirty.width, dirty.height);
|
|
527 |
}
|
|
528 |
}
|
|
529 |
}
|
|
530 |
|
|
531 |
//
|
|
532 |
// This is called from the toolkit thread when a native expose is
|
|
533 |
// received.
|
|
534 |
//
|
|
535 |
void nativeAddDirtyRegion(AppContext appContext, Container c,
|
|
536 |
int x, int y, int w, int h) {
|
|
537 |
if (w > 0 && h > 0) {
|
|
538 |
synchronized(this) {
|
|
539 |
Rectangle dirty = hwDirtyComponents.get(c);
|
|
540 |
if (dirty == null) {
|
|
541 |
hwDirtyComponents.put(c, new Rectangle(x, y, w, h));
|
|
542 |
}
|
|
543 |
else {
|
|
544 |
hwDirtyComponents.put(c, SwingUtilities.computeUnion(
|
|
545 |
x, y, w, h, dirty));
|
|
546 |
}
|
|
547 |
}
|
|
548 |
scheduleProcessingRunnable(appContext);
|
|
549 |
}
|
|
550 |
}
|
|
551 |
|
|
552 |
//
|
|
553 |
// This is called from the toolkit thread when awt needs to run a
|
|
554 |
// Runnable before we paint.
|
|
555 |
//
|
|
556 |
void nativeQueueSurfaceDataRunnable(AppContext appContext, Component c,
|
|
557 |
Runnable r) {
|
|
558 |
synchronized(this) {
|
|
559 |
if (runnableList == null) {
|
|
560 |
runnableList = new LinkedList<Runnable>();
|
|
561 |
}
|
|
562 |
runnableList.add(r);
|
|
563 |
}
|
|
564 |
scheduleProcessingRunnable(appContext);
|
|
565 |
}
|
|
566 |
|
|
567 |
/**
|
|
568 |
* Extends the dirty region for the specified component to include
|
|
569 |
* the new region.
|
|
570 |
*
|
|
571 |
* @return false if <code>c</code> is not yet marked dirty.
|
|
572 |
*/
|
|
573 |
private synchronized boolean extendDirtyRegion(
|
|
574 |
Component c, int x, int y, int w, int h) {
|
|
575 |
Rectangle r = (Rectangle)dirtyComponents.get(c);
|
|
576 |
if (r != null) {
|
|
577 |
// A non-null r implies c is already marked as dirty,
|
|
578 |
// and that the parent is valid. Therefore we can
|
|
579 |
// just union the rect and bail.
|
|
580 |
SwingUtilities.computeUnion(x, y, w, h, r);
|
|
581 |
return true;
|
|
582 |
}
|
|
583 |
return false;
|
|
584 |
}
|
|
585 |
|
|
586 |
/** Return the current dirty region for a component.
|
|
587 |
* Return an empty rectangle if the component is not
|
|
588 |
* dirty.
|
|
589 |
*/
|
|
590 |
public Rectangle getDirtyRegion(JComponent aComponent) {
|
|
591 |
Rectangle r = null;
|
|
592 |
synchronized(this) {
|
|
593 |
r = (Rectangle)dirtyComponents.get(aComponent);
|
|
594 |
}
|
|
595 |
if(r == null)
|
|
596 |
return new Rectangle(0,0,0,0);
|
|
597 |
else
|
|
598 |
return new Rectangle(r);
|
|
599 |
}
|
|
600 |
|
|
601 |
/**
|
|
602 |
* Mark a component completely dirty. <b>aComponent</b> will be
|
|
603 |
* completely painted during the next paintDirtyRegions() call.
|
|
604 |
*/
|
|
605 |
public void markCompletelyDirty(JComponent aComponent) {
|
|
606 |
addDirtyRegion(aComponent,0,0,Integer.MAX_VALUE,Integer.MAX_VALUE);
|
|
607 |
}
|
|
608 |
|
|
609 |
/**
|
|
610 |
* Mark a component completely clean. <b>aComponent</b> will not
|
|
611 |
* get painted during the next paintDirtyRegions() call.
|
|
612 |
*/
|
|
613 |
public void markCompletelyClean(JComponent aComponent) {
|
|
614 |
synchronized(this) {
|
|
615 |
dirtyComponents.remove(aComponent);
|
|
616 |
}
|
|
617 |
}
|
|
618 |
|
|
619 |
/**
|
|
620 |
* Convenience method that returns true if <b>aComponent</b> will be completely
|
|
621 |
* painted during the next paintDirtyRegions(). If computing dirty regions is
|
|
622 |
* expensive for your component, use this method and avoid computing dirty region
|
|
623 |
* if it return true.
|
|
624 |
*/
|
|
625 |
public boolean isCompletelyDirty(JComponent aComponent) {
|
|
626 |
Rectangle r;
|
|
627 |
|
|
628 |
r = getDirtyRegion(aComponent);
|
|
629 |
if(r.width == Integer.MAX_VALUE &&
|
|
630 |
r.height == Integer.MAX_VALUE)
|
|
631 |
return true;
|
|
632 |
else
|
|
633 |
return false;
|
|
634 |
}
|
|
635 |
|
|
636 |
|
|
637 |
/**
|
|
638 |
* Validate all of the components that have been marked invalid.
|
|
639 |
* @see #addInvalidComponent
|
|
640 |
*/
|
|
641 |
public void validateInvalidComponents() {
|
|
642 |
java.util.List<Component> ic;
|
|
643 |
synchronized(this) {
|
|
644 |
if(invalidComponents == null) {
|
|
645 |
return;
|
|
646 |
}
|
|
647 |
ic = invalidComponents;
|
|
648 |
invalidComponents = null;
|
|
649 |
}
|
|
650 |
int n = ic.size();
|
|
651 |
for(int i = 0; i < n; i++) {
|
|
652 |
ic.get(i).validate();
|
|
653 |
}
|
|
654 |
}
|
|
655 |
|
|
656 |
|
|
657 |
/**
|
|
658 |
* This is invoked to process paint requests. It's needed
|
|
659 |
* for backward compatability in so far as RepaintManager would previously
|
|
660 |
* not see paint requests for top levels, so, we have to make sure
|
|
661 |
* a subclass correctly paints any dirty top levels.
|
|
662 |
*/
|
|
663 |
private void prePaintDirtyRegions() {
|
|
664 |
Map<Component,Rectangle> dirtyComponents;
|
|
665 |
java.util.List<Runnable> runnableList;
|
|
666 |
synchronized(this) {
|
|
667 |
dirtyComponents = this.dirtyComponents;
|
|
668 |
runnableList = this.runnableList;
|
|
669 |
this.runnableList = null;
|
|
670 |
}
|
|
671 |
if (runnableList != null) {
|
|
672 |
for (Runnable runnable : runnableList) {
|
|
673 |
runnable.run();
|
|
674 |
}
|
|
675 |
}
|
|
676 |
paintDirtyRegions();
|
|
677 |
if (dirtyComponents.size() > 0) {
|
|
678 |
// This'll only happen if a subclass isn't correctly dealing
|
|
679 |
// with toplevels.
|
|
680 |
paintDirtyRegions(dirtyComponents);
|
|
681 |
}
|
|
682 |
}
|
|
683 |
|
|
684 |
/**
|
|
685 |
* Paint all of the components that have been marked dirty.
|
|
686 |
*
|
|
687 |
* @see #addDirtyRegion
|
|
688 |
*/
|
|
689 |
public void paintDirtyRegions() {
|
|
690 |
synchronized(this) { // swap for thread safety
|
|
691 |
Map<Component,Rectangle> tmp = tmpDirtyComponents;
|
|
692 |
tmpDirtyComponents = dirtyComponents;
|
|
693 |
dirtyComponents = tmp;
|
|
694 |
dirtyComponents.clear();
|
|
695 |
}
|
|
696 |
paintDirtyRegions(tmpDirtyComponents);
|
|
697 |
}
|
|
698 |
|
|
699 |
private void paintDirtyRegions(Map<Component,Rectangle>
|
|
700 |
tmpDirtyComponents){
|
|
701 |
int i, count;
|
|
702 |
java.util.List<Component> roots;
|
|
703 |
Component dirtyComponent;
|
|
704 |
|
|
705 |
count = tmpDirtyComponents.size();
|
|
706 |
if (count == 0) {
|
|
707 |
return;
|
|
708 |
}
|
|
709 |
|
|
710 |
Rectangle rect;
|
|
711 |
int localBoundsX = 0;
|
|
712 |
int localBoundsY = 0;
|
|
713 |
int localBoundsH = 0;
|
|
714 |
int localBoundsW = 0;
|
|
715 |
Enumeration keys;
|
|
716 |
|
|
717 |
roots = new ArrayList<Component>(count);
|
|
718 |
|
|
719 |
for (Component dirty : tmpDirtyComponents.keySet()) {
|
|
720 |
collectDirtyComponents(tmpDirtyComponents, dirty, roots);
|
|
721 |
}
|
|
722 |
|
|
723 |
count = roots.size();
|
|
724 |
// System.out.println("roots size is " + count);
|
|
725 |
painting = true;
|
|
726 |
try {
|
|
727 |
for(i=0 ; i < count ; i++) {
|
|
728 |
dirtyComponent = roots.get(i);
|
|
729 |
rect = tmpDirtyComponents.get(dirtyComponent);
|
|
730 |
// System.out.println("Should refresh :" + rect);
|
|
731 |
localBoundsH = dirtyComponent.getHeight();
|
|
732 |
localBoundsW = dirtyComponent.getWidth();
|
|
733 |
|
|
734 |
SwingUtilities.computeIntersection(localBoundsX,
|
|
735 |
localBoundsY,
|
|
736 |
localBoundsW,
|
|
737 |
localBoundsH,
|
|
738 |
rect);
|
|
739 |
if (dirtyComponent instanceof JComponent) {
|
|
740 |
((JComponent)dirtyComponent).paintImmediately(
|
|
741 |
rect.x,rect.y,rect.width, rect.height);
|
|
742 |
}
|
|
743 |
else if (dirtyComponent.isShowing()) {
|
|
744 |
Graphics g = JComponent.safelyGetGraphics(
|
|
745 |
dirtyComponent, dirtyComponent);
|
|
746 |
// If the Graphics goes away, it means someone disposed of
|
|
747 |
// the window, don't do anything.
|
|
748 |
if (g != null) {
|
|
749 |
g.setClip(rect.x, rect.y, rect.width, rect.height);
|
|
750 |
try {
|
|
751 |
dirtyComponent.paint(g);
|
|
752 |
} finally {
|
|
753 |
g.dispose();
|
|
754 |
}
|
|
755 |
}
|
|
756 |
}
|
|
757 |
// If the repaintRoot has been set, service it now and
|
|
758 |
// remove any components that are children of repaintRoot.
|
|
759 |
if (repaintRoot != null) {
|
|
760 |
adjustRoots(repaintRoot, roots, i + 1);
|
|
761 |
count = roots.size();
|
|
762 |
paintManager.isRepaintingRoot = true;
|
|
763 |
repaintRoot.paintImmediately(0, 0, repaintRoot.getWidth(),
|
|
764 |
repaintRoot.getHeight());
|
|
765 |
paintManager.isRepaintingRoot = false;
|
|
766 |
// Only service repaintRoot once.
|
|
767 |
repaintRoot = null;
|
|
768 |
}
|
|
769 |
}
|
|
770 |
} finally {
|
|
771 |
painting = false;
|
|
772 |
}
|
|
773 |
tmpDirtyComponents.clear();
|
|
774 |
}
|
|
775 |
|
|
776 |
|
|
777 |
/**
|
|
778 |
* Removes any components from roots that are children of
|
|
779 |
* root.
|
|
780 |
*/
|
|
781 |
private void adjustRoots(JComponent root,
|
|
782 |
java.util.List<Component> roots, int index) {
|
|
783 |
for (int i = roots.size() - 1; i >= index; i--) {
|
|
784 |
Component c = roots.get(i);
|
|
785 |
for(;;) {
|
|
786 |
if (c == root || c == null || !(c instanceof JComponent)) {
|
|
787 |
break;
|
|
788 |
}
|
|
789 |
c = c.getParent();
|
|
790 |
}
|
|
791 |
if (c == root) {
|
|
792 |
roots.remove(i);
|
|
793 |
}
|
|
794 |
}
|
|
795 |
}
|
|
796 |
|
|
797 |
Rectangle tmp = new Rectangle();
|
|
798 |
|
|
799 |
void collectDirtyComponents(Map<Component,Rectangle> dirtyComponents,
|
|
800 |
Component dirtyComponent,
|
|
801 |
java.util.List<Component> roots) {
|
|
802 |
int dx, dy, rootDx, rootDy;
|
|
803 |
Component component, rootDirtyComponent,parent;
|
|
804 |
Rectangle cBounds;
|
|
805 |
|
|
806 |
// Find the highest parent which is dirty. When we get out of this
|
|
807 |
// rootDx and rootDy will contain the translation from the
|
|
808 |
// rootDirtyComponent's coordinate system to the coordinates of the
|
|
809 |
// original dirty component. The tmp Rect is also used to compute the
|
|
810 |
// visible portion of the dirtyRect.
|
|
811 |
|
|
812 |
component = rootDirtyComponent = dirtyComponent;
|
|
813 |
|
|
814 |
int x = dirtyComponent.getX();
|
|
815 |
int y = dirtyComponent.getY();
|
|
816 |
int w = dirtyComponent.getWidth();
|
|
817 |
int h = dirtyComponent.getHeight();
|
|
818 |
|
|
819 |
dx = rootDx = 0;
|
|
820 |
dy = rootDy = 0;
|
|
821 |
tmp.setBounds((Rectangle) dirtyComponents.get(dirtyComponent));
|
|
822 |
|
|
823 |
// System.out.println("Collect dirty component for bound " + tmp +
|
|
824 |
// "component bounds is " + cBounds);;
|
|
825 |
SwingUtilities.computeIntersection(0,0,w,h,tmp);
|
|
826 |
|
|
827 |
if (tmp.isEmpty()) {
|
|
828 |
// System.out.println("Empty 1");
|
|
829 |
return;
|
|
830 |
}
|
|
831 |
|
|
832 |
for(;;) {
|
|
833 |
if(!(component instanceof JComponent))
|
|
834 |
break;
|
|
835 |
|
|
836 |
parent = component.getParent();
|
|
837 |
if(parent == null)
|
|
838 |
break;
|
|
839 |
|
|
840 |
component = parent;
|
|
841 |
|
|
842 |
dx += x;
|
|
843 |
dy += y;
|
|
844 |
tmp.setLocation(tmp.x + x, tmp.y + y);
|
|
845 |
|
|
846 |
x = component.getX();
|
|
847 |
y = component.getY();
|
|
848 |
w = component.getWidth();
|
|
849 |
h = component.getHeight();
|
|
850 |
tmp = SwingUtilities.computeIntersection(0,0,w,h,tmp);
|
|
851 |
|
|
852 |
if (tmp.isEmpty()) {
|
|
853 |
// System.out.println("Empty 2");
|
|
854 |
return;
|
|
855 |
}
|
|
856 |
|
|
857 |
if (dirtyComponents.get(component) != null) {
|
|
858 |
rootDirtyComponent = component;
|
|
859 |
rootDx = dx;
|
|
860 |
rootDy = dy;
|
|
861 |
}
|
|
862 |
}
|
|
863 |
|
|
864 |
if (dirtyComponent != rootDirtyComponent) {
|
|
865 |
Rectangle r;
|
|
866 |
tmp.setLocation(tmp.x + rootDx - dx,
|
|
867 |
tmp.y + rootDy - dy);
|
|
868 |
r = (Rectangle)dirtyComponents.get(rootDirtyComponent);
|
|
869 |
SwingUtilities.computeUnion(tmp.x,tmp.y,tmp.width,tmp.height,r);
|
|
870 |
}
|
|
871 |
|
|
872 |
// If we haven't seen this root before, then we need to add it to the
|
|
873 |
// list of root dirty Views.
|
|
874 |
|
|
875 |
if (!roots.contains(rootDirtyComponent))
|
|
876 |
roots.add(rootDirtyComponent);
|
|
877 |
}
|
|
878 |
|
|
879 |
|
|
880 |
/**
|
|
881 |
* Returns a string that displays and identifies this
|
|
882 |
* object's properties.
|
|
883 |
*
|
|
884 |
* @return a String representation of this object
|
|
885 |
*/
|
|
886 |
public synchronized String toString() {
|
|
887 |
StringBuffer sb = new StringBuffer();
|
|
888 |
if(dirtyComponents != null)
|
|
889 |
sb.append("" + dirtyComponents);
|
|
890 |
return sb.toString();
|
|
891 |
}
|
|
892 |
|
|
893 |
|
|
894 |
/**
|
|
895 |
* Return the offscreen buffer that should be used as a double buffer with
|
|
896 |
* the component <code>c</code>.
|
|
897 |
* By default there is a double buffer per RepaintManager.
|
|
898 |
* The buffer might be smaller than <code>(proposedWidth,proposedHeight)</code>
|
|
899 |
* This happens when the maximum double buffer size as been set for the receiving
|
|
900 |
* repaint manager.
|
|
901 |
*/
|
|
902 |
public Image getOffscreenBuffer(Component c,int proposedWidth,int proposedHeight) {
|
|
903 |
return _getOffscreenBuffer(c, proposedWidth, proposedHeight);
|
|
904 |
}
|
|
905 |
|
|
906 |
/**
|
|
907 |
* Return a volatile offscreen buffer that should be used as a
|
|
908 |
* double buffer with the specified component <code>c</code>.
|
|
909 |
* The image returned will be an instance of VolatileImage, or null
|
|
910 |
* if a VolatileImage object could not be instantiated.
|
|
911 |
* This buffer might be smaller than <code>(proposedWidth,proposedHeight)</code>.
|
|
912 |
* This happens when the maximum double buffer size has been set for this
|
|
913 |
* repaint manager.
|
|
914 |
*
|
|
915 |
* @see java.awt.image.VolatileImage
|
|
916 |
* @since 1.4
|
|
917 |
*/
|
|
918 |
public Image getVolatileOffscreenBuffer(Component c,
|
|
919 |
int proposedWidth,int proposedHeight) {
|
|
920 |
GraphicsConfiguration config = c.getGraphicsConfiguration();
|
|
921 |
if (config == null) {
|
|
922 |
config = GraphicsEnvironment.getLocalGraphicsEnvironment().
|
|
923 |
getDefaultScreenDevice().getDefaultConfiguration();
|
|
924 |
}
|
|
925 |
Dimension maxSize = getDoubleBufferMaximumSize();
|
|
926 |
int width = proposedWidth < 1 ? 1 :
|
|
927 |
(proposedWidth > maxSize.width? maxSize.width : proposedWidth);
|
|
928 |
int height = proposedHeight < 1 ? 1 :
|
|
929 |
(proposedHeight > maxSize.height? maxSize.height : proposedHeight);
|
|
930 |
VolatileImage image = volatileMap.get(config);
|
|
931 |
if (image == null || image.getWidth() < width ||
|
|
932 |
image.getHeight() < height) {
|
|
933 |
if (image != null) {
|
|
934 |
image.flush();
|
|
935 |
}
|
|
936 |
image = config.createCompatibleVolatileImage(width, height);
|
|
937 |
volatileMap.put(config, image);
|
|
938 |
}
|
|
939 |
return image;
|
|
940 |
}
|
|
941 |
|
|
942 |
private Image _getOffscreenBuffer(Component c, int proposedWidth, int proposedHeight) {
|
|
943 |
Dimension maxSize = getDoubleBufferMaximumSize();
|
|
944 |
DoubleBufferInfo doubleBuffer = null;
|
|
945 |
int width, height;
|
|
946 |
|
|
947 |
if (standardDoubleBuffer == null) {
|
|
948 |
standardDoubleBuffer = new DoubleBufferInfo();
|
|
949 |
}
|
|
950 |
doubleBuffer = standardDoubleBuffer;
|
|
951 |
|
|
952 |
width = proposedWidth < 1? 1 :
|
|
953 |
(proposedWidth > maxSize.width? maxSize.width : proposedWidth);
|
|
954 |
height = proposedHeight < 1? 1 :
|
|
955 |
(proposedHeight > maxSize.height? maxSize.height : proposedHeight);
|
|
956 |
|
|
957 |
if (doubleBuffer.needsReset || (doubleBuffer.image != null &&
|
|
958 |
(doubleBuffer.size.width < width ||
|
|
959 |
doubleBuffer.size.height < height))) {
|
|
960 |
doubleBuffer.needsReset = false;
|
|
961 |
if (doubleBuffer.image != null) {
|
|
962 |
doubleBuffer.image.flush();
|
|
963 |
doubleBuffer.image = null;
|
|
964 |
}
|
|
965 |
width = Math.max(doubleBuffer.size.width, width);
|
|
966 |
height = Math.max(doubleBuffer.size.height, height);
|
|
967 |
}
|
|
968 |
|
|
969 |
Image result = doubleBuffer.image;
|
|
970 |
|
|
971 |
if (doubleBuffer.image == null) {
|
|
972 |
result = c.createImage(width , height);
|
|
973 |
doubleBuffer.size = new Dimension(width, height);
|
|
974 |
if (c instanceof JComponent) {
|
|
975 |
((JComponent)c).setCreatedDoubleBuffer(true);
|
|
976 |
doubleBuffer.image = result;
|
|
977 |
}
|
|
978 |
// JComponent will inform us when it is no longer valid
|
|
979 |
// (via removeNotify) we have no such hook to other components,
|
|
980 |
// therefore we don't keep a ref to the Component
|
|
981 |
// (indirectly through the Image) by stashing the image.
|
|
982 |
}
|
|
983 |
return result;
|
|
984 |
}
|
|
985 |
|
|
986 |
|
|
987 |
/** Set the maximum double buffer size. **/
|
|
988 |
public void setDoubleBufferMaximumSize(Dimension d) {
|
|
989 |
doubleBufferMaxSize = d;
|
|
990 |
if (doubleBufferMaxSize == null) {
|
|
991 |
clearImages();
|
|
992 |
} else {
|
|
993 |
clearImages(d.width, d.height);
|
|
994 |
}
|
|
995 |
}
|
|
996 |
|
|
997 |
private void clearImages() {
|
|
998 |
clearImages(0, 0);
|
|
999 |
}
|
|
1000 |
|
|
1001 |
private void clearImages(int width, int height) {
|
|
1002 |
if (standardDoubleBuffer != null && standardDoubleBuffer.image != null) {
|
|
1003 |
if (standardDoubleBuffer.image.getWidth(null) > width ||
|
|
1004 |
standardDoubleBuffer.image.getHeight(null) > height) {
|
|
1005 |
standardDoubleBuffer.image.flush();
|
|
1006 |
standardDoubleBuffer.image = null;
|
|
1007 |
}
|
|
1008 |
}
|
|
1009 |
// Clear out the VolatileImages
|
|
1010 |
Iterator gcs = volatileMap.keySet().iterator();
|
|
1011 |
while (gcs.hasNext()) {
|
|
1012 |
GraphicsConfiguration gc = (GraphicsConfiguration)gcs.next();
|
|
1013 |
VolatileImage image = (VolatileImage)volatileMap.get(gc);
|
|
1014 |
if (image.getWidth() > width || image.getHeight() > height) {
|
|
1015 |
image.flush();
|
|
1016 |
gcs.remove();
|
|
1017 |
}
|
|
1018 |
}
|
|
1019 |
}
|
|
1020 |
|
|
1021 |
/**
|
|
1022 |
* Returns the maximum double buffer size.
|
|
1023 |
*
|
|
1024 |
* @return a Dimension object representing the maximum size
|
|
1025 |
*/
|
|
1026 |
public Dimension getDoubleBufferMaximumSize() {
|
|
1027 |
if (doubleBufferMaxSize == null) {
|
|
1028 |
try {
|
|
1029 |
Rectangle virtualBounds = new Rectangle();
|
|
1030 |
GraphicsEnvironment ge = GraphicsEnvironment.
|
|
1031 |
getLocalGraphicsEnvironment();
|
|
1032 |
for (GraphicsDevice gd : ge.getScreenDevices()) {
|
|
1033 |
GraphicsConfiguration gc = gd.getDefaultConfiguration();
|
|
1034 |
virtualBounds = virtualBounds.union(gc.getBounds());
|
|
1035 |
}
|
|
1036 |
doubleBufferMaxSize = new Dimension(virtualBounds.width,
|
|
1037 |
virtualBounds.height);
|
|
1038 |
} catch (HeadlessException e) {
|
|
1039 |
doubleBufferMaxSize = new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
|
|
1040 |
}
|
|
1041 |
}
|
|
1042 |
return doubleBufferMaxSize;
|
|
1043 |
}
|
|
1044 |
|
|
1045 |
/**
|
|
1046 |
* Enables or disables double buffering in this RepaintManager.
|
|
1047 |
* CAUTION: The default value for this property is set for optimal
|
|
1048 |
* paint performance on the given platform and it is not recommended
|
|
1049 |
* that programs modify this property directly.
|
|
1050 |
*
|
|
1051 |
* @param aFlag true to activate double buffering
|
|
1052 |
* @see #isDoubleBufferingEnabled
|
|
1053 |
*/
|
|
1054 |
public void setDoubleBufferingEnabled(boolean aFlag) {
|
|
1055 |
doubleBufferingEnabled = aFlag;
|
|
1056 |
PaintManager paintManager = getPaintManager();
|
|
1057 |
if (!aFlag && paintManager.getClass() != PaintManager.class) {
|
|
1058 |
setPaintManager(new PaintManager());
|
|
1059 |
}
|
|
1060 |
}
|
|
1061 |
|
|
1062 |
/**
|
|
1063 |
* Returns true if this RepaintManager is double buffered.
|
|
1064 |
* The default value for this property may vary from platform
|
|
1065 |
* to platform. On platforms where native double buffering
|
|
1066 |
* is supported in the AWT, the default value will be <code>false</code>
|
|
1067 |
* to avoid unnecessary buffering in Swing.
|
|
1068 |
* On platforms where native double buffering is not supported,
|
|
1069 |
* the default value will be <code>true</code>.
|
|
1070 |
*
|
|
1071 |
* @return true if this object is double buffered
|
|
1072 |
*/
|
|
1073 |
public boolean isDoubleBufferingEnabled() {
|
|
1074 |
return doubleBufferingEnabled;
|
|
1075 |
}
|
|
1076 |
|
|
1077 |
/**
|
|
1078 |
* This resets the double buffer. Actually, it marks the double buffer
|
|
1079 |
* as invalid, the double buffer will then be recreated on the next
|
|
1080 |
* invocation of getOffscreenBuffer.
|
|
1081 |
*/
|
|
1082 |
void resetDoubleBuffer() {
|
|
1083 |
if (standardDoubleBuffer != null) {
|
|
1084 |
standardDoubleBuffer.needsReset = true;
|
|
1085 |
}
|
|
1086 |
}
|
|
1087 |
|
|
1088 |
/**
|
|
1089 |
* This resets the volatile double buffer.
|
|
1090 |
*/
|
|
1091 |
void resetVolatileDoubleBuffer(GraphicsConfiguration gc) {
|
|
1092 |
Image image = volatileMap.remove(gc);
|
|
1093 |
if (image != null) {
|
|
1094 |
image.flush();
|
|
1095 |
}
|
|
1096 |
}
|
|
1097 |
|
|
1098 |
/**
|
|
1099 |
* Returns true if we should use the <code>Image</code> returned
|
|
1100 |
* from <code>getVolatileOffscreenBuffer</code> to do double buffering.
|
|
1101 |
*/
|
|
1102 |
boolean useVolatileDoubleBuffer() {
|
|
1103 |
return volatileImageBufferEnabled;
|
|
1104 |
}
|
|
1105 |
|
|
1106 |
/**
|
|
1107 |
* Returns true if the current thread is the thread painting. This
|
|
1108 |
* will return false if no threads are painting.
|
|
1109 |
*/
|
|
1110 |
private synchronized boolean isPaintingThread() {
|
|
1111 |
return (Thread.currentThread() == paintThread);
|
|
1112 |
}
|
|
1113 |
//
|
|
1114 |
// Paint methods. You very, VERY rarely need to invoke these.
|
|
1115 |
// They are invoked directly from JComponent's painting code and
|
|
1116 |
// when painting happens outside the normal flow: DefaultDesktopManager
|
|
1117 |
// and JViewport. If you end up needing these methods in other places be
|
|
1118 |
// careful that you don't get stuck in a paint loop.
|
|
1119 |
//
|
|
1120 |
|
|
1121 |
/**
|
|
1122 |
* Paints a region of a component
|
|
1123 |
*
|
|
1124 |
* @param paintingComponent Component to paint
|
|
1125 |
* @param bufferComponent Component to obtain buffer for
|
|
1126 |
* @param g Graphics to paint to
|
|
1127 |
* @param x X-coordinate
|
|
1128 |
* @param y Y-coordinate
|
|
1129 |
* @param w Width
|
|
1130 |
* @param h Height
|
|
1131 |
*/
|
|
1132 |
void paint(JComponent paintingComponent,
|
|
1133 |
JComponent bufferComponent, Graphics g,
|
|
1134 |
int x, int y, int w, int h) {
|
|
1135 |
PaintManager paintManager = getPaintManager();
|
|
1136 |
if (!isPaintingThread()) {
|
|
1137 |
// We're painting to two threads at once. PaintManager deals
|
|
1138 |
// with this a bit better than BufferStrategyPaintManager, use
|
|
1139 |
// it to avoid possible exceptions/corruption.
|
|
1140 |
if (paintManager.getClass() != PaintManager.class) {
|
|
1141 |
paintManager = new PaintManager();
|
|
1142 |
paintManager.repaintManager = this;
|
|
1143 |
}
|
|
1144 |
}
|
|
1145 |
if (!paintManager.paint(paintingComponent, bufferComponent, g,
|
|
1146 |
x, y, w, h)) {
|
|
1147 |
g.setClip(x, y, w, h);
|
|
1148 |
paintingComponent.paintToOffscreen(g, x, y, w, h, x + w, y + h);
|
|
1149 |
}
|
|
1150 |
}
|
|
1151 |
|
|
1152 |
/**
|
|
1153 |
* Does a copy area on the specified region.
|
|
1154 |
*
|
|
1155 |
* @param clip Whether or not the copyArea needs to be clipped to the
|
|
1156 |
* Component's bounds.
|
|
1157 |
*/
|
|
1158 |
void copyArea(JComponent c, Graphics g, int x, int y, int w, int h,
|
|
1159 |
int deltaX, int deltaY, boolean clip) {
|
|
1160 |
getPaintManager().copyArea(c, g, x, y, w, h, deltaX, deltaY, clip);
|
|
1161 |
}
|
|
1162 |
|
|
1163 |
/**
|
|
1164 |
* Invoked prior to any paint/copyArea method calls. This will
|
|
1165 |
* be followed by an invocation of <code>endPaint</code>.
|
|
1166 |
* <b>WARNING</b>: Callers of this method need to wrap the call
|
|
1167 |
* in a <code>try/finally</code>, otherwise if an exception is thrown
|
|
1168 |
* during the course of painting the RepaintManager may
|
|
1169 |
* be left in a state in which the screen is not updated, eg:
|
|
1170 |
* <pre>
|
|
1171 |
* repaintManager.beginPaint();
|
|
1172 |
* try {
|
|
1173 |
* repaintManager.paint(...);
|
|
1174 |
* } finally {
|
|
1175 |
* repaintManager.endPaint();
|
|
1176 |
* }
|
|
1177 |
* </pre>
|
|
1178 |
*/
|
|
1179 |
void beginPaint() {
|
|
1180 |
boolean multiThreadedPaint = false;
|
|
1181 |
int paintDepth = 0;
|
|
1182 |
Thread currentThread = Thread.currentThread();
|
|
1183 |
synchronized(this) {
|
|
1184 |
paintDepth = this.paintDepth;
|
|
1185 |
if (paintThread == null || currentThread == paintThread) {
|
|
1186 |
paintThread = currentThread;
|
|
1187 |
this.paintDepth++;
|
|
1188 |
} else {
|
|
1189 |
multiThreadedPaint = true;
|
|
1190 |
}
|
|
1191 |
}
|
|
1192 |
if (!multiThreadedPaint && paintDepth == 0) {
|
|
1193 |
getPaintManager().beginPaint();
|
|
1194 |
}
|
|
1195 |
}
|
|
1196 |
|
|
1197 |
/**
|
|
1198 |
* Invoked after <code>beginPaint</code> has been invoked.
|
|
1199 |
*/
|
|
1200 |
void endPaint() {
|
|
1201 |
if (isPaintingThread()) {
|
|
1202 |
PaintManager paintManager = null;
|
|
1203 |
synchronized(this) {
|
|
1204 |
if (--paintDepth == 0) {
|
|
1205 |
paintManager = getPaintManager();
|
|
1206 |
}
|
|
1207 |
}
|
|
1208 |
if (paintManager != null) {
|
|
1209 |
paintManager.endPaint();
|
|
1210 |
synchronized(this) {
|
|
1211 |
paintThread = null;
|
|
1212 |
}
|
|
1213 |
}
|
|
1214 |
}
|
|
1215 |
}
|
|
1216 |
|
|
1217 |
/**
|
|
1218 |
* If possible this will show a previously rendered portion of
|
|
1219 |
* a Component. If successful, this will return true, otherwise false.
|
|
1220 |
* <p>
|
|
1221 |
* WARNING: This method is invoked from the native toolkit thread, be
|
|
1222 |
* very careful as to what methods this invokes!
|
|
1223 |
*/
|
|
1224 |
boolean show(Container c, int x, int y, int w, int h) {
|
|
1225 |
return getPaintManager().show(c, x, y, w, h);
|
|
1226 |
}
|
|
1227 |
|
|
1228 |
/**
|
|
1229 |
* Invoked when the doubleBuffered or useTrueDoubleBuffering
|
|
1230 |
* properties of a JRootPane change. This may come in on any thread.
|
|
1231 |
*/
|
|
1232 |
void doubleBufferingChanged(JRootPane rootPane) {
|
|
1233 |
getPaintManager().doubleBufferingChanged(rootPane);
|
|
1234 |
}
|
|
1235 |
|
|
1236 |
/**
|
|
1237 |
* Sets the <code>PaintManager</code> that is used to handle all
|
|
1238 |
* double buffered painting.
|
|
1239 |
*
|
|
1240 |
* @param paintManager The PaintManager to use. Passing in null indicates
|
|
1241 |
* the fallback PaintManager should be used.
|
|
1242 |
*/
|
|
1243 |
void setPaintManager(PaintManager paintManager) {
|
|
1244 |
if (paintManager == null) {
|
|
1245 |
paintManager = new PaintManager();
|
|
1246 |
}
|
|
1247 |
PaintManager oldPaintManager;
|
|
1248 |
synchronized(this) {
|
|
1249 |
oldPaintManager = this.paintManager;
|
|
1250 |
this.paintManager = paintManager;
|
|
1251 |
paintManager.repaintManager = this;
|
|
1252 |
}
|
|
1253 |
if (oldPaintManager != null) {
|
|
1254 |
oldPaintManager.dispose();
|
|
1255 |
}
|
|
1256 |
}
|
|
1257 |
|
|
1258 |
private synchronized PaintManager getPaintManager() {
|
|
1259 |
if (paintManager == null) {
|
|
1260 |
PaintManager paintManager = null;
|
|
1261 |
if (doubleBufferingEnabled && !nativeDoubleBuffering) {
|
|
1262 |
switch (bufferStrategyType) {
|
|
1263 |
case BUFFER_STRATEGY_NOT_SPECIFIED:
|
|
1264 |
if (((SunToolkit)Toolkit.getDefaultToolkit()).
|
|
1265 |
useBufferPerWindow()) {
|
|
1266 |
paintManager = new BufferStrategyPaintManager();
|
|
1267 |
}
|
|
1268 |
break;
|
|
1269 |
case BUFFER_STRATEGY_SPECIFIED_ON:
|
|
1270 |
paintManager = new BufferStrategyPaintManager();
|
|
1271 |
break;
|
|
1272 |
default:
|
|
1273 |
break;
|
|
1274 |
}
|
|
1275 |
}
|
|
1276 |
// null case handled in setPaintManager
|
|
1277 |
setPaintManager(paintManager);
|
|
1278 |
}
|
|
1279 |
return paintManager;
|
|
1280 |
}
|
|
1281 |
|
|
1282 |
private void scheduleProcessingRunnable() {
|
|
1283 |
scheduleProcessingRunnable(AppContext.getAppContext());
|
|
1284 |
}
|
|
1285 |
|
|
1286 |
private void scheduleProcessingRunnable(AppContext context) {
|
|
1287 |
if (processingRunnable.markPending()) {
|
|
1288 |
SunToolkit.getSystemEventQueueImplPP(context).
|
|
1289 |
postEvent(new InvocationEvent(Toolkit.getDefaultToolkit(),
|
|
1290 |
processingRunnable));
|
|
1291 |
}
|
|
1292 |
}
|
|
1293 |
|
|
1294 |
|
|
1295 |
/**
|
|
1296 |
* PaintManager is used to handle all double buffered painting for
|
|
1297 |
* Swing. Subclasses should call back into the JComponent method
|
|
1298 |
* <code>paintToOffscreen</code> to handle the actual painting.
|
|
1299 |
*/
|
|
1300 |
static class PaintManager {
|
|
1301 |
/**
|
|
1302 |
* RepaintManager the PaintManager has been installed on.
|
|
1303 |
*/
|
|
1304 |
protected RepaintManager repaintManager;
|
|
1305 |
boolean isRepaintingRoot;
|
|
1306 |
|
|
1307 |
/**
|
|
1308 |
* Paints a region of a component
|
|
1309 |
*
|
|
1310 |
* @param paintingComponent Component to paint
|
|
1311 |
* @param bufferComponent Component to obtain buffer for
|
|
1312 |
* @param g Graphics to paint to
|
|
1313 |
* @param x X-coordinate
|
|
1314 |
* @param y Y-coordinate
|
|
1315 |
* @param w Width
|
|
1316 |
* @param h Height
|
|
1317 |
* @return true if painting was successful.
|
|
1318 |
*/
|
|
1319 |
public boolean paint(JComponent paintingComponent,
|
|
1320 |
JComponent bufferComponent, Graphics g,
|
|
1321 |
int x, int y, int w, int h) {
|
|
1322 |
// First attempt to use VolatileImage buffer for performance.
|
|
1323 |
// If this fails (which should rarely occur), fallback to a
|
|
1324 |
// standard Image buffer.
|
|
1325 |
boolean paintCompleted = false;
|
|
1326 |
Image offscreen;
|
|
1327 |
if (repaintManager.useVolatileDoubleBuffer() &&
|
|
1328 |
(offscreen = getValidImage(repaintManager.
|
|
1329 |
getVolatileOffscreenBuffer(bufferComponent, w, h))) != null) {
|
|
1330 |
VolatileImage vImage = (java.awt.image.VolatileImage)offscreen;
|
|
1331 |
GraphicsConfiguration gc = bufferComponent.
|
|
1332 |
getGraphicsConfiguration();
|
|
1333 |
for (int i = 0; !paintCompleted &&
|
|
1334 |
i < RepaintManager.VOLATILE_LOOP_MAX; i++) {
|
|
1335 |
if (vImage.validate(gc) ==
|
|
1336 |
VolatileImage.IMAGE_INCOMPATIBLE) {
|
|
1337 |
repaintManager.resetVolatileDoubleBuffer(gc);
|
|
1338 |
offscreen = repaintManager.getVolatileOffscreenBuffer(
|
|
1339 |
bufferComponent,w, h);
|
|
1340 |
vImage = (java.awt.image.VolatileImage)offscreen;
|
|
1341 |
}
|
|
1342 |
paintDoubleBuffered(paintingComponent, vImage, g, x, y,
|
|
1343 |
w, h);
|
|
1344 |
paintCompleted = !vImage.contentsLost();
|
|
1345 |
}
|
|
1346 |
}
|
|
1347 |
// VolatileImage painting loop failed, fallback to regular
|
|
1348 |
// offscreen buffer
|
|
1349 |
if (!paintCompleted && (offscreen = getValidImage(
|
|
1350 |
repaintManager.getOffscreenBuffer(
|
|
1351 |
bufferComponent, w, h))) != null) {
|
|
1352 |
paintDoubleBuffered(paintingComponent, offscreen, g, x, y, w,
|
|
1353 |
h);
|
|
1354 |
paintCompleted = true;
|
|
1355 |
}
|
|
1356 |
return paintCompleted;
|
|
1357 |
}
|
|
1358 |
|
|
1359 |
/**
|
|
1360 |
* Does a copy area on the specified region.
|
|
1361 |
*/
|
|
1362 |
public void copyArea(JComponent c, Graphics g, int x, int y, int w,
|
|
1363 |
int h, int deltaX, int deltaY, boolean clip) {
|
|
1364 |
g.copyArea(x, y, w, h, deltaX, deltaY);
|
|
1365 |
}
|
|
1366 |
|
|
1367 |
/**
|
|
1368 |
* Invoked prior to any calls to paint or copyArea.
|
|
1369 |
*/
|
|
1370 |
public void beginPaint() {
|
|
1371 |
}
|
|
1372 |
|
|
1373 |
/**
|
|
1374 |
* Invoked to indicate painting has been completed.
|
|
1375 |
*/
|
|
1376 |
public void endPaint() {
|
|
1377 |
}
|
|
1378 |
|
|
1379 |
/**
|
|
1380 |
* Shows a region of a previously rendered component. This
|
|
1381 |
* will return true if successful, false otherwise. The default
|
|
1382 |
* implementation returns false.
|
|
1383 |
*/
|
|
1384 |
public boolean show(Container c, int x, int y, int w, int h) {
|
|
1385 |
return false;
|
|
1386 |
}
|
|
1387 |
|
|
1388 |
/**
|
|
1389 |
* Invoked when the doubleBuffered or useTrueDoubleBuffering
|
|
1390 |
* properties of a JRootPane change. This may come in on any thread.
|
|
1391 |
*/
|
|
1392 |
public void doubleBufferingChanged(JRootPane rootPane) {
|
|
1393 |
}
|
|
1394 |
|
|
1395 |
/**
|
|
1396 |
* Paints a portion of a component to an offscreen buffer.
|
|
1397 |
*/
|
|
1398 |
protected void paintDoubleBuffered(JComponent c, Image image,
|
|
1399 |
Graphics g, int clipX, int clipY,
|
|
1400 |
int clipW, int clipH) {
|
|
1401 |
Graphics osg = image.getGraphics();
|
|
1402 |
int bw = Math.min(clipW, image.getWidth(null));
|
|
1403 |
int bh = Math.min(clipH, image.getHeight(null));
|
|
1404 |
int x,y,maxx,maxy;
|
|
1405 |
|
|
1406 |
try {
|
|
1407 |
for(x = clipX, maxx = clipX+clipW; x < maxx ; x += bw ) {
|
|
1408 |
for(y=clipY, maxy = clipY + clipH; y < maxy ; y += bh) {
|
|
1409 |
osg.translate(-x, -y);
|
|
1410 |
osg.setClip(x,y,bw,bh);
|
|
1411 |
c.paintToOffscreen(osg, x, y, bw, bh, maxx, maxy);
|
|
1412 |
g.setClip(x, y, bw, bh);
|
|
1413 |
g.drawImage(image, x, y, c);
|
|
1414 |
osg.translate(x, y);
|
|
1415 |
}
|
|
1416 |
}
|
|
1417 |
} finally {
|
|
1418 |
osg.dispose();
|
|
1419 |
}
|
|
1420 |
}
|
|
1421 |
|
|
1422 |
/**
|
|
1423 |
* If <code>image</code> is non-null with a positive size it
|
|
1424 |
* is returned, otherwise null is returned.
|
|
1425 |
*/
|
|
1426 |
private Image getValidImage(Image image) {
|
|
1427 |
if (image != null && image.getWidth(null) > 0 &&
|
|
1428 |
image.getHeight(null) > 0) {
|
|
1429 |
return image;
|
|
1430 |
}
|
|
1431 |
return null;
|
|
1432 |
}
|
|
1433 |
|
|
1434 |
/**
|
|
1435 |
* Schedules a repaint for the specified component. This differs
|
|
1436 |
* from <code>root.repaint</code> in that if the RepaintManager is
|
|
1437 |
* currently processing paint requests it'll process this request
|
|
1438 |
* with the current set of requests.
|
|
1439 |
*/
|
|
1440 |
protected void repaintRoot(JComponent root) {
|
|
1441 |
assert (repaintManager.repaintRoot == null);
|
|
1442 |
if (repaintManager.painting) {
|
|
1443 |
repaintManager.repaintRoot = root;
|
|
1444 |
}
|
|
1445 |
else {
|
|
1446 |
root.repaint();
|
|
1447 |
}
|
|
1448 |
}
|
|
1449 |
|
|
1450 |
/**
|
|
1451 |
* Returns true if the component being painted is the root component
|
|
1452 |
* that was previously passed to <code>repaintRoot</code>.
|
|
1453 |
*/
|
|
1454 |
protected boolean isRepaintingRoot() {
|
|
1455 |
return isRepaintingRoot;
|
|
1456 |
}
|
|
1457 |
|
|
1458 |
/**
|
|
1459 |
* Cleans up any state. After invoked the PaintManager will no
|
|
1460 |
* longer be used anymore.
|
|
1461 |
*/
|
|
1462 |
protected void dispose() {
|
|
1463 |
}
|
|
1464 |
}
|
|
1465 |
|
|
1466 |
|
|
1467 |
private class DoubleBufferInfo {
|
|
1468 |
public Image image;
|
|
1469 |
public Dimension size;
|
|
1470 |
public boolean needsReset = false;
|
|
1471 |
}
|
|
1472 |
|
|
1473 |
|
|
1474 |
/**
|
|
1475 |
* Listener installed to detect display changes. When display changes,
|
|
1476 |
* schedules a callback to notify all RepaintManagers of the display
|
|
1477 |
* changes. Only one DisplayChangedHandler is ever installed. The
|
|
1478 |
* singleton instance will schedule notification for all AppContexts.
|
|
1479 |
*/
|
|
1480 |
private static final class DisplayChangedHandler implements
|
|
1481 |
DisplayChangedListener {
|
|
1482 |
public void displayChanged() {
|
|
1483 |
scheduleDisplayChanges();
|
|
1484 |
}
|
|
1485 |
|
|
1486 |
public void paletteChanged() {
|
|
1487 |
}
|
|
1488 |
|
|
1489 |
private void scheduleDisplayChanges() {
|
|
1490 |
// To avoid threading problems, we notify each RepaintManager
|
|
1491 |
// on the thread it was created on.
|
|
1492 |
for (Object c : AppContext.getAppContexts()) {
|
|
1493 |
AppContext context = (AppContext) c;
|
|
1494 |
synchronized(context) {
|
|
1495 |
if (!context.isDisposed()) {
|
|
1496 |
EventQueue eventQueue = (EventQueue)context.get(
|
|
1497 |
AppContext.EVENT_QUEUE_KEY);
|
|
1498 |
if (eventQueue != null) {
|
|
1499 |
eventQueue.postEvent(new InvocationEvent(
|
|
1500 |
Toolkit.getDefaultToolkit(),
|
|
1501 |
new DisplayChangedRunnable()));
|
|
1502 |
}
|
|
1503 |
}
|
|
1504 |
}
|
|
1505 |
}
|
|
1506 |
}
|
|
1507 |
}
|
|
1508 |
|
|
1509 |
|
|
1510 |
private static final class DisplayChangedRunnable implements Runnable {
|
|
1511 |
public void run() {
|
|
1512 |
RepaintManager.currentManager((JComponent)null).displayChanged();
|
|
1513 |
}
|
|
1514 |
}
|
|
1515 |
|
|
1516 |
|
|
1517 |
/**
|
|
1518 |
* Runnable used to process all repaint/revalidate requests.
|
|
1519 |
*/
|
|
1520 |
private final class ProcessingRunnable implements Runnable {
|
|
1521 |
// If true, we're wainting on the EventQueue.
|
|
1522 |
private boolean pending;
|
|
1523 |
|
|
1524 |
/**
|
|
1525 |
* Marks this processing runnable as pending. If this was not
|
|
1526 |
* already marked as pending, true is returned.
|
|
1527 |
*/
|
|
1528 |
public synchronized boolean markPending() {
|
|
1529 |
if (!pending) {
|
|
1530 |
pending = true;
|
|
1531 |
return true;
|
|
1532 |
}
|
|
1533 |
return false;
|
|
1534 |
}
|
|
1535 |
|
|
1536 |
public void run() {
|
|
1537 |
synchronized (this) {
|
|
1538 |
pending = false;
|
|
1539 |
}
|
|
1540 |
// First pass, flush any heavy paint events into real paint
|
|
1541 |
// events. If there are pending heavy weight requests this will
|
|
1542 |
// result in q'ing this request up one more time. As
|
|
1543 |
// long as no other requests come in between now and the time
|
|
1544 |
// the second one is processed nothing will happen. This is not
|
|
1545 |
// ideal, but the logic needed to suppress the second request is
|
|
1546 |
// more headache than it's worth.
|
|
1547 |
scheduleHeavyWeightPaints();
|
|
1548 |
// Do the actual validation and painting.
|
|
1549 |
validateInvalidComponents();
|
|
1550 |
prePaintDirtyRegions();
|
|
1551 |
}
|
|
1552 |
}
|
|
1553 |
}
|