下面列出了java.awt.image.VolatileImage#IMAGE_INCOMPATIBLE 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private void initBackbuffer() {
createBackbuffer();
int res = bb.validate(getGraphicsConfiguration());
if (res == VolatileImage.IMAGE_INCOMPATIBLE) {
bb = null;
createBackbuffer();
bb.validate(getGraphicsConfiguration());
res = VolatileImage.IMAGE_RESTORED;
}
if (res == VolatileImage.IMAGE_RESTORED) {
Graphics g = bb.getGraphics();
g.setColor(new Color(rnd.nextInt(0x00ffffff)));
g.fillRect(0, 0, bb.getWidth(), bb.getHeight());
volSprite = createVolatileImage(100, 100);
}
volSprite.validate(getGraphicsConfiguration());
}
public void render(Graphics g) {
do {
height = getBounds().height;
width = getBounds().width;
if (vimg == null) {
vimg = createVolatileImage(width, height);
renderOffscreen();
}
int returnCode = vimg.validate(getGraphicsConfiguration());
if (returnCode == VolatileImage.IMAGE_RESTORED) {
renderOffscreen();
} else if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) {
vimg = getGraphicsConfiguration().
createCompatibleVolatileImage(width, height);
renderOffscreen();
} else if (returnCode == VolatileImage.IMAGE_OK) {
renderOffscreen();
}
g.drawImage(vimg, 0, 0, this);
} while (vimg.contentsLost());
}
private static void initVI(GraphicsConfiguration gc) {
int res;
if (destVI == null) {
res = VolatileImage.IMAGE_INCOMPATIBLE;
} else {
res = destVI.validate(gc);
}
if (res == VolatileImage.IMAGE_INCOMPATIBLE) {
if (destVI != null) destVI.flush();
destVI = gc.createCompatibleVolatileImage(IMAGE_SIZE, IMAGE_SIZE);
destVI.validate(gc);
res = VolatileImage.IMAGE_RESTORED;
}
if (res == VolatileImage.IMAGE_RESTORED) {
Graphics vig = destVI.getGraphics();
vig.setColor(Color.red);
vig.fillRect(0, 0, destVI.getWidth(), destVI.getHeight());
vig.dispose();
}
}
private static void initVI(GraphicsConfiguration gc) {
int res;
if (destVI == null) {
res = VolatileImage.IMAGE_INCOMPATIBLE;
} else {
res = destVI.validate(gc);
}
if (res == VolatileImage.IMAGE_INCOMPATIBLE) {
if (destVI != null) destVI.flush();
destVI = gc.createCompatibleVolatileImage(IMAGE_SIZE, IMAGE_SIZE);
destVI.validate(gc);
res = VolatileImage.IMAGE_RESTORED;
}
if (res == VolatileImage.IMAGE_RESTORED) {
Graphics vig = destVI.getGraphics();
vig.setColor(Color.red);
vig.fillRect(0, 0, destVI.getWidth(), destVI.getHeight());
vig.dispose();
}
}
void test() {
createVImg();
BufferedImage bi = null;
do {
int valCode = vImg.validate(getDefaultGC());
if (valCode == VolatileImage.IMAGE_INCOMPATIBLE) {
createVImg();
}
Graphics2D g = vImg.createGraphics();
draw(g);
bi = vImg.getSnapshot();
} while (vImg.contentsLost());
if (bi != null) {
test(bi);
write(bi);
}
}
private static void initVI(GraphicsConfiguration gc) {
int res;
if (destVI == null) {
res = VolatileImage.IMAGE_INCOMPATIBLE;
} else {
res = destVI.validate(gc);
}
if (res == VolatileImage.IMAGE_INCOMPATIBLE) {
if (destVI != null) destVI.flush();
destVI = gc.createCompatibleVolatileImage(IMAGE_SIZE, IMAGE_SIZE);
destVI.validate(gc);
res = VolatileImage.IMAGE_RESTORED;
}
if (res == VolatileImage.IMAGE_RESTORED) {
Graphics vig = destVI.getGraphics();
vig.setColor(Color.red);
vig.fillRect(0, 0, destVI.getWidth(), destVI.getHeight());
vig.dispose();
}
}
private void drawBackingStoreImage(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
GraphicsConfiguration gc = g2d.getDeviceConfiguration();
if (vImg == null ||
vImg.validate(gc) == VolatileImage.IMAGE_INCOMPATIBLE) {
/* Create a new volatile image */
vImg = createVolatileImage(PANEL_WIDTH, PANEL_HEIGHT / 3);
}
Graphics vImgGraphics = vImg.createGraphics();
vImgGraphics.setColor(Color.WHITE);
vImgGraphics.fillRect(0, 0, PANEL_WIDTH, PANEL_HEIGHT / 3);
drawInfo(vImgGraphics,
PANEL_X,
PANEL_Y,
"Backbuffer",
Color.MAGENTA);
g.drawImage(vImg, 0, PANEL_Y * 2, this);
}
private void initBackbuffer() {
createBackbuffer();
int res = bb.validate(getGraphicsConfiguration());
if (res == VolatileImage.IMAGE_INCOMPATIBLE) {
bb = null;
createBackbuffer();
bb.validate(getGraphicsConfiguration());
res = VolatileImage.IMAGE_RESTORED;
}
if (res == VolatileImage.IMAGE_RESTORED) {
Graphics g = bb.getGraphics();
g.setColor(new Color(rnd.nextInt(0x00ffffff)));
g.fillRect(0, 0, bb.getWidth(), bb.getHeight());
volSprite = createVolatileImage(100, 100);
}
volSprite.validate(getGraphicsConfiguration());
}
/**
* Paints a region of a component
*
* @param paintingComponent Component to paint
* @param bufferComponent Component to obtain buffer for
* @param g Graphics to paint to
* @param x X-coordinate
* @param y Y-coordinate
* @param w Width
* @param h Height
* @return true if painting was successful.
*/
public boolean paint(JComponent paintingComponent,
JComponent bufferComponent, Graphics g,
int x, int y, int w, int h) {
// First attempt to use VolatileImage buffer for performance.
// If this fails (which should rarely occur), fallback to a
// standard Image buffer.
boolean paintCompleted = false;
Image offscreen;
if (repaintManager.useVolatileDoubleBuffer() &&
(offscreen = getValidImage(repaintManager.
getVolatileOffscreenBuffer(bufferComponent, w, h))) != null) {
VolatileImage vImage = (java.awt.image.VolatileImage)offscreen;
GraphicsConfiguration gc = bufferComponent.
getGraphicsConfiguration();
for (int i = 0; !paintCompleted &&
i < RepaintManager.VOLATILE_LOOP_MAX; i++) {
if (vImage.validate(gc) ==
VolatileImage.IMAGE_INCOMPATIBLE) {
repaintManager.resetVolatileDoubleBuffer(gc);
offscreen = repaintManager.getVolatileOffscreenBuffer(
bufferComponent,w, h);
vImage = (java.awt.image.VolatileImage)offscreen;
}
paintDoubleBuffered(paintingComponent, vImage, g, x, y,
w, h);
paintCompleted = !vImage.contentsLost();
}
}
// VolatileImage painting loop failed, fallback to regular
// offscreen buffer
if (!paintCompleted && (offscreen = getValidImage(
repaintManager.getOffscreenBuffer(
bufferComponent, w, h))) != null) {
paintDoubleBuffered(paintingComponent, offscreen, g, x, y, w,
h);
paintCompleted = true;
}
return paintCompleted;
}
public void validateSprite() {
int result =
((VolatileImage)image).validate(getGraphicsConfiguration());
if (result == VolatileImage.IMAGE_INCOMPATIBLE) {
image = createSprite();
result = VolatileImage.IMAGE_RESTORED;
}
if (result == VolatileImage.IMAGE_RESTORED) {
Graphics g = image.getGraphics();
g.setColor(color);
g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
}
}
public void validateSprite() {
int result =
((VolatileImage)image).validate(getGraphicsConfiguration());
if (result == VolatileImage.IMAGE_INCOMPATIBLE) {
image = createSprite();
result = VolatileImage.IMAGE_RESTORED;
}
if (result == VolatileImage.IMAGE_RESTORED) {
Graphics g = image.getGraphics();
g.setColor(color);
g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
}
}
void test() {
createVImg();
do {
int valCode = vImg.validate(getDefaultGC());
if (valCode == VolatileImage.IMAGE_INCOMPATIBLE) {
createVImg();
}
Graphics2D g = vImg.createGraphics();
draw(g);
BufferedImage bi = vImg.getSnapshot();
test(bi);
write(bi);
} while (vImg.contentsLost());
}
public void validateSprite() {
int result =
((VolatileImage)image).validate(getGraphicsConfiguration());
if (result == VolatileImage.IMAGE_INCOMPATIBLE) {
image = createSprite();
result = VolatileImage.IMAGE_RESTORED;
}
if (result == VolatileImage.IMAGE_RESTORED) {
Graphics g = image.getGraphics();
g.setColor(color);
g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
}
}
void test() {
createVImg();
do {
int valCode = vImg.validate(getDefaultGC());
if (valCode == VolatileImage.IMAGE_INCOMPATIBLE) {
createVImg();
}
Graphics2D g = vImg.createGraphics();
draw(g);
BufferedImage bi = vImg.getSnapshot();
test(bi);
write(bi);
} while (vImg.contentsLost());
}
/**
* Get the image ready for rendering. This method is called to make
* sure that the accelerated SurfaceData exists and is
* ready to be used. Users call this method prior to any set of
* rendering to or from the image, to make sure the image is ready
* and compatible with the given GraphicsConfiguration.
*
* The image may not be "ready" if either we had problems creating
* it in the first place (e.g., there was no space in vram) or if
* the surface became lost (e.g., some other app or the OS caused
* vram surfaces to be removed).
*
* Note that we want to return RESTORED in any situation where the
* SurfaceData is different than it was last time. So whether it's
* software or hardware, if we have a different SurfaceData object,
* then the contents have been altered and we must reflect that
* change to the user.
*/
public int validate(GraphicsConfiguration gc) {
int returnCode = VolatileImage.IMAGE_OK;
boolean lostSurfaceTmp = lostSurface;
lostSurface = false;
if (isAccelerationEnabled()) {
if (!isConfigValid(gc)) {
// If we're asked to render to a different device than the
// one we were created under, return INCOMPATIBLE error code.
// Note that a null gc simply ignores the incompatibility
// issue
returnCode = VolatileImage.IMAGE_INCOMPATIBLE;
} else if (sdAccel == null) {
// We either had problems creating the surface or the display
// mode changed and we nullified the old one. Try it again.
sdAccel = initAcceleratedSurface();
if (sdAccel != null) {
// set the current SurfaceData to accelerated version
sdCurrent = sdAccel;
// we don't need the system memory surface anymore, so
// let's release it now (it can always be restored later)
sdBackup = null;
returnCode = VolatileImage.IMAGE_RESTORED;
} else {
sdCurrent = getBackupSurface();
}
} else if (sdAccel.isSurfaceLost()) {
try {
restoreAcceleratedSurface();
// set the current SurfaceData to accelerated version
sdCurrent = sdAccel;
// restoration successful: accel surface no longer lost
sdAccel.setSurfaceLost(false);
// we don't need the system memory surface anymore, so
// let's release it now (it can always be restored later)
sdBackup = null;
returnCode = VolatileImage.IMAGE_RESTORED;
} catch (sun.java2d.InvalidPipeException e) {
// Set the current SurfaceData to software version so that
// drawing can continue. Note that we still have
// the lostAccelSurface flag set so that we will continue
// to attempt to restore the accelerated surface.
sdCurrent = getBackupSurface();
}
} else if (lostSurfaceTmp) {
// Something else triggered this loss/restoration. Could
// be a palette change that didn't require a SurfaceData
// recreation but merely a re-rendering of the pixels.
returnCode = VolatileImage.IMAGE_RESTORED;
}
} else if (sdAccel != null) {
// if the "acceleration enabled" state changed to disabled,
// switch to software surface
sdCurrent = getBackupSurface();
sdAccel = null;
returnCode = VolatileImage.IMAGE_RESTORED;
}
if ((returnCode != VolatileImage.IMAGE_INCOMPATIBLE) &&
(sdCurrent != sdPrevious))
{
// contents have changed - return RESTORED to user
sdPrevious = sdCurrent;
returnCode = VolatileImage.IMAGE_RESTORED;
}
if (returnCode == VolatileImage.IMAGE_RESTORED) {
// clear the current surface with the background color,
// only if the surface has been restored
initContents();
}
return returnCode;
}
/**
* Get the image ready for rendering. This method is called to make
* sure that the accelerated SurfaceData exists and is
* ready to be used. Users call this method prior to any set of
* rendering to or from the image, to make sure the image is ready
* and compatible with the given GraphicsConfiguration.
*
* The image may not be "ready" if either we had problems creating
* it in the first place (e.g., there was no space in vram) or if
* the surface became lost (e.g., some other app or the OS caused
* vram surfaces to be removed).
*
* Note that we want to return RESTORED in any situation where the
* SurfaceData is different than it was last time. So whether it's
* software or hardware, if we have a different SurfaceData object,
* then the contents have been altered and we must reflect that
* change to the user.
*/
public int validate(GraphicsConfiguration gc) {
int returnCode = VolatileImage.IMAGE_OK;
boolean lostSurfaceTmp = lostSurface;
lostSurface = false;
if (isAccelerationEnabled()) {
if (!isConfigValid(gc)) {
// If we're asked to render to a different device than the
// one we were created under, return INCOMPATIBLE error code.
// Note that a null gc simply ignores the incompatibility
// issue
returnCode = VolatileImage.IMAGE_INCOMPATIBLE;
} else if (sdAccel == null) {
// We either had problems creating the surface or the display
// mode changed and we nullified the old one. Try it again.
sdAccel = initAcceleratedSurface();
if (sdAccel != null) {
// set the current SurfaceData to accelerated version
sdCurrent = sdAccel;
// we don't need the system memory surface anymore, so
// let's release it now (it can always be restored later)
sdBackup = null;
returnCode = VolatileImage.IMAGE_RESTORED;
} else {
sdCurrent = getBackupSurface();
}
} else if (sdAccel.isSurfaceLost()) {
try {
restoreAcceleratedSurface();
// set the current SurfaceData to accelerated version
sdCurrent = sdAccel;
// restoration successful: accel surface no longer lost
sdAccel.setSurfaceLost(false);
// we don't need the system memory surface anymore, so
// let's release it now (it can always be restored later)
sdBackup = null;
returnCode = VolatileImage.IMAGE_RESTORED;
} catch (sun.java2d.InvalidPipeException e) {
// Set the current SurfaceData to software version so that
// drawing can continue. Note that we still have
// the lostAccelSurface flag set so that we will continue
// to attempt to restore the accelerated surface.
sdCurrent = getBackupSurface();
}
} else if (lostSurfaceTmp) {
// Something else triggered this loss/restoration. Could
// be a palette change that didn't require a SurfaceData
// recreation but merely a re-rendering of the pixels.
returnCode = VolatileImage.IMAGE_RESTORED;
}
} else if (sdAccel != null) {
// if the "acceleration enabled" state changed to disabled,
// switch to software surface
sdCurrent = getBackupSurface();
sdAccel = null;
returnCode = VolatileImage.IMAGE_RESTORED;
}
if ((returnCode != VolatileImage.IMAGE_INCOMPATIBLE) &&
(sdCurrent != sdPrevious))
{
// contents have changed - return RESTORED to user
sdPrevious = sdCurrent;
returnCode = VolatileImage.IMAGE_RESTORED;
}
if (returnCode == VolatileImage.IMAGE_RESTORED) {
// clear the current surface with the background color,
// only if the surface has been restored
initContents();
}
return returnCode;
}
/**
* Gets the rendered image for this painter at the requested size, either
* from cache or create a new one
*
* @param config the graphics configuration.
* @param c the component to paint.
* @param w the component width.
* @param h the component height.
* @param extendedCacheKeys extended cache keys.
*
* @return the new image.
*/
private VolatileImage getImage(GraphicsConfiguration config, JComponent c, int w, int h, Object[] extendedCacheKeys) {
ImageCache imageCache = ImageCache.getInstance();
// get the buffer for this component
VolatileImage buffer = (VolatileImage) imageCache.getImage(config, w, h, this, extendedCacheKeys);
int renderCounter = 0; // to avoid any potential, though unlikely,
// infinite loop
do {
// validate the buffer so we can check for surface loss
int bufferStatus = VolatileImage.IMAGE_INCOMPATIBLE;
if (buffer != null) {
bufferStatus = buffer.validate(config);
}
// If the buffer status is incompatible or restored, then we need to
// re-render to the volatile image
if (bufferStatus == VolatileImage.IMAGE_INCOMPATIBLE || bufferStatus == VolatileImage.IMAGE_RESTORED) {
// if the buffer is null (hasn't been created), or isn't the
// right size, or has lost its contents,
// then recreate the buffer
if (buffer == null || buffer.getWidth() != w || buffer.getHeight() != h
|| bufferStatus == VolatileImage.IMAGE_INCOMPATIBLE) {
// clear any resources related to the old back buffer
if (buffer != null) {
buffer.flush();
buffer = null;
}
// recreate the buffer
buffer = config.createCompatibleVolatileImage(w, h, Transparency.TRANSLUCENT);
// put in cache for future
imageCache.setImage(buffer, config, w, h, this, extendedCacheKeys);
}
// create the graphics context with which to paint to the buffer
Graphics2D bg = buffer.createGraphics();
// clear the background before configuring the graphics
bg.setComposite(AlphaComposite.Clear);
bg.fillRect(0, 0, w, h);
bg.setComposite(AlphaComposite.SrcOver);
configureGraphics(bg);
// paint the painter into buffer
paintDirectly(bg, c, w, h, extendedCacheKeys);
// close buffer graphics
bg.dispose();
}
} while (buffer.contentsLost() && renderCounter++ < 3);
// check if we failed
if (renderCounter == 3)
return null;
// return image
return buffer;
}
public static void main(String[] args) {
GraphicsConfiguration gc =
GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice().getDefaultConfiguration();
if (gc.getColorModel().getPixelSize() <= 8) {
System.out.println("8-bit color model, test considered passed");
return;
}
/*
* Set up images:
* 1.) VolatileImge for rendering to,
* 2.) BufferedImage for reading back the contents of the VI
* 3.) The image triggering the problem
*/
VolatileImage vImg = null;
BufferedImage readBackBImg;
// create a BITMASK ICM such that the transparent color is
// tr. black (and it's the first in the color map so a buffered image
// created with this ICM is transparent
byte r[] = { 0x00, (byte)0xff};
byte g[] = { 0x00, (byte)0xff};
byte b[] = { 0x00, (byte)0xff};
IndexColorModel icm = new IndexColorModel(8, 2, r, g, b, 0);
WritableRaster wr = icm.createCompatibleWritableRaster(25, 25);
BufferedImage tImg = new BufferedImage(icm, wr, false, null);
do {
if (vImg == null ||
vImg.validate(gc) == VolatileImage.IMAGE_INCOMPATIBLE)
{
vImg = gc.createCompatibleVolatileImage(tImg.getWidth(),
tImg.getHeight());
}
Graphics viG = vImg.getGraphics();
viG.setColor(Color.red);
viG.fillRect(0, 0, vImg.getWidth(), vImg.getHeight());
viG.drawImage(tImg, 0, 0, Color.green, null);
viG.fillRect(0, 0, vImg.getWidth(), vImg.getHeight());
viG.drawImage(tImg, 0, 0, Color.white, null);
readBackBImg = vImg.getSnapshot();
} while (vImg.contentsLost());
for (int x = 0; x < readBackBImg.getWidth(); x++) {
for (int y = 0; y < readBackBImg.getHeight(); y++) {
int currPixel = readBackBImg.getRGB(x, y);
if (currPixel != Color.white.getRGB()) {
String fileName = "DrawImageBgTest.png";
try {
ImageIO.write(readBackBImg, "png", new File(fileName));
System.err.println("Dumped image to " + fileName);
} catch (IOException ex) {}
throw new
RuntimeException("Test Failed: found wrong color: 0x"+
Integer.toHexString(currPixel));
}
}
}
System.out.println("Test Passed.");
}
/**
* Get the image ready for rendering. This method is called to make
* sure that the accelerated SurfaceData exists and is
* ready to be used. Users call this method prior to any set of
* rendering to or from the image, to make sure the image is ready
* and compatible with the given GraphicsConfiguration.
*
* The image may not be "ready" if either we had problems creating
* it in the first place (e.g., there was no space in vram) or if
* the surface became lost (e.g., some other app or the OS caused
* vram surfaces to be removed).
*
* Note that we want to return RESTORED in any situation where the
* SurfaceData is different than it was last time. So whether it's
* software or hardware, if we have a different SurfaceData object,
* then the contents have been altered and we must reflect that
* change to the user.
*/
public int validate(GraphicsConfiguration gc) {
int returnCode = VolatileImage.IMAGE_OK;
boolean lostSurfaceTmp = lostSurface;
lostSurface = false;
if (isAccelerationEnabled()) {
if (!isConfigValid(gc)) {
// If we're asked to render to a different device than the
// one we were created under, return INCOMPATIBLE error code.
// Note that a null gc simply ignores the incompatibility
// issue
returnCode = VolatileImage.IMAGE_INCOMPATIBLE;
} else if (sdAccel == null) {
// We either had problems creating the surface or the display
// mode changed and we nullified the old one. Try it again.
sdAccel = initAcceleratedSurface();
if (sdAccel != null) {
// set the current SurfaceData to accelerated version
sdCurrent = sdAccel;
// we don't need the system memory surface anymore, so
// let's release it now (it can always be restored later)
sdBackup = null;
returnCode = VolatileImage.IMAGE_RESTORED;
} else {
sdCurrent = getBackupSurface();
}
} else if (sdAccel.isSurfaceLost()) {
try {
restoreAcceleratedSurface();
// set the current SurfaceData to accelerated version
sdCurrent = sdAccel;
// restoration successful: accel surface no longer lost
sdAccel.setSurfaceLost(false);
// we don't need the system memory surface anymore, so
// let's release it now (it can always be restored later)
sdBackup = null;
returnCode = VolatileImage.IMAGE_RESTORED;
} catch (sun.java2d.InvalidPipeException e) {
// Set the current SurfaceData to software version so that
// drawing can continue. Note that we still have
// the lostAccelSurface flag set so that we will continue
// to attempt to restore the accelerated surface.
sdCurrent = getBackupSurface();
}
} else if (lostSurfaceTmp) {
// Something else triggered this loss/restoration. Could
// be a palette change that didn't require a SurfaceData
// recreation but merely a re-rendering of the pixels.
returnCode = VolatileImage.IMAGE_RESTORED;
}
} else if (sdAccel != null) {
// if the "acceleration enabled" state changed to disabled,
// switch to software surface
sdCurrent = getBackupSurface();
sdAccel = null;
returnCode = VolatileImage.IMAGE_RESTORED;
}
if ((returnCode != VolatileImage.IMAGE_INCOMPATIBLE) &&
(sdCurrent != sdPrevious))
{
// contents have changed - return RESTORED to user
sdPrevious = sdCurrent;
returnCode = VolatileImage.IMAGE_RESTORED;
}
if (returnCode == VolatileImage.IMAGE_RESTORED) {
// clear the current surface with the background color,
// only if the surface has been restored
initContents();
}
return returnCode;
}
/**
* Paints a region of a component
*
* @param paintingComponent Component to paint
* @param bufferComponent Component to obtain buffer for
* @param g Graphics to paint to
* @param x X-coordinate
* @param y Y-coordinate
* @param w Width
* @param h Height
* @return true if painting was successful.
*/
public boolean paint(JComponent paintingComponent,
JComponent bufferComponent, Graphics g,
int x, int y, int w, int h) {
// First attempt to use VolatileImage buffer for performance.
// If this fails (which should rarely occur), fallback to a
// standard Image buffer.
boolean paintCompleted = false;
Image offscreen;
int sw = w + 1;
int sh = h + 1;
if (repaintManager.useVolatileDoubleBuffer() &&
(offscreen = getValidImage(repaintManager.
getVolatileOffscreenBuffer(bufferComponent, sw, sh))) != null) {
VolatileImage vImage = (java.awt.image.VolatileImage)offscreen;
GraphicsConfiguration gc = bufferComponent.
getGraphicsConfiguration();
for (int i = 0; !paintCompleted &&
i < RepaintManager.VOLATILE_LOOP_MAX; i++) {
if (vImage.validate(gc) ==
VolatileImage.IMAGE_INCOMPATIBLE) {
repaintManager.resetVolatileDoubleBuffer(gc);
offscreen = repaintManager.getVolatileOffscreenBuffer(
bufferComponent, sw, sh);
vImage = (java.awt.image.VolatileImage)offscreen;
}
paintDoubleBuffered(paintingComponent, vImage, g, x, y,
w, h);
paintCompleted = !vImage.contentsLost();
}
}
// VolatileImage painting loop failed, fallback to regular
// offscreen buffer
if (!paintCompleted && (offscreen = getValidImage(
repaintManager.getOffscreenBuffer(
bufferComponent, w, h))) != null) {
paintDoubleBuffered(paintingComponent, offscreen, g, x, y, w,
h);
paintCompleted = true;
}
return paintCompleted;
}