void SpriteController::doUpdateSprites() {
// Collect information about sprite updates.
// Each sprite update record includes a reference to its associated sprite so we can
// be certain the sprites will not be deleted while this function runs. Sprites
// may invalidate themselves again during this time but we will handle those changes
// in the next iteration.
Vector<SpriteUpdate> updates;
size_t numSprites;
{ // acquire lock
AutoMutex _l(mLock);
numSprites = mLocked.invalidatedSprites.size();
for (size_t i = 0; i < numSprites; i++) {
const sp<SpriteImpl>& sprite = mLocked.invalidatedSprites.itemAt(i);
updates.push(SpriteUpdate(sprite, sprite->getStateLocked()));
sprite->resetDirtyLocked();
}
mLocked.invalidatedSprites.clear();
} // release lock
// Create missing surfaces.
bool surfaceChanged = false;
for (size_t i = 0; i < numSprites; i++) {
SpriteUpdate& update = updates.editItemAt(i);
if (update.state.surfaceControl == NULL && update.state.wantSurfaceVisible()) {
update.state.surfaceWidth = update.state.icon.bitmap.width();
update.state.surfaceHeight = update.state.icon.bitmap.height();
update.state.surfaceDrawn = false;
update.state.surfaceVisible = false;
update.state.surfaceControl = obtainSurface(
update.state.surfaceWidth, update.state.surfaceHeight);
if (update.state.surfaceControl != NULL) {
update.surfaceChanged = surfaceChanged = true;
}
}
}
// Resize sprites if needed, inside a global transaction.
bool haveGlobalTransaction = false;
for (size_t i = 0; i < numSprites; i++) {
SpriteUpdate& update = updates.editItemAt(i);
if (update.state.surfaceControl != NULL && update.state.wantSurfaceVisible()) {
int32_t desiredWidth = update.state.icon.bitmap.width();
int32_t desiredHeight = update.state.icon.bitmap.height();
if (update.state.surfaceWidth < desiredWidth
|| update.state.surfaceHeight < desiredHeight) {
if (!haveGlobalTransaction) {
SurfaceComposerClient::openGlobalTransaction();
haveGlobalTransaction = true;
}
status_t status = update.state.surfaceControl->setSize(desiredWidth, desiredHeight);
if (status) {
ALOGE("Error %d resizing sprite surface from %dx%d to %dx%d",
status, update.state.surfaceWidth, update.state.surfaceHeight,
desiredWidth, desiredHeight);
} else {
update.state.surfaceWidth = desiredWidth;
update.state.surfaceHeight = desiredHeight;
update.state.surfaceDrawn = false;
update.surfaceChanged = surfaceChanged = true;
if (update.state.surfaceVisible) {
status = update.state.surfaceControl->hide();
if (status) {
ALOGE("Error %d hiding sprite surface after resize.", status);
} else {
update.state.surfaceVisible = false;
}
}
}
}
}
}
if (haveGlobalTransaction) {
SurfaceComposerClient::closeGlobalTransaction();
}
// Redraw sprites if needed.
for (size_t i = 0; i < numSprites; i++) {
SpriteUpdate& update = updates.editItemAt(i);
if ((update.state.dirty & DIRTY_BITMAP) && update.state.surfaceDrawn) {
update.state.surfaceDrawn = false;
update.surfaceChanged = surfaceChanged = true;
}
if (update.state.surfaceControl != NULL && !update.state.surfaceDrawn
&& update.state.wantSurfaceVisible()) {
sp<Surface> surface = update.state.surfaceControl->getSurface();
ANativeWindow_Buffer outBuffer;
status_t status = surface->lock(&outBuffer, NULL);
if (status) {
ALOGE("Error %d locking sprite surface before drawing.", status);
} else {
SkBitmap surfaceBitmap;
ssize_t bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
surfaceBitmap.installPixels(SkImageInfo::MakeN32Premul(outBuffer.width, outBuffer.height),
outBuffer.bits, bpr);
SkCanvas surfaceCanvas(surfaceBitmap);
SkPaint paint;
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
surfaceCanvas.drawBitmap(update.state.icon.bitmap, 0, 0, &paint);
if (outBuffer.width > update.state.icon.bitmap.width()) {
paint.setColor(0); // transparent fill color
surfaceCanvas.drawRectCoords(update.state.icon.bitmap.width(), 0,
outBuffer.width, update.state.icon.bitmap.height(), paint);
}
if (outBuffer.height > update.state.icon.bitmap.height()) {
paint.setColor(0); // transparent fill color
surfaceCanvas.drawRectCoords(0, update.state.icon.bitmap.height(),
outBuffer.width, outBuffer.height, paint);
}
status = surface->unlockAndPost();
if (status) {
ALOGE("Error %d unlocking and posting sprite surface after drawing.", status);
} else {
update.state.surfaceDrawn = true;
update.surfaceChanged = surfaceChanged = true;
}
}
}
}
// Set sprite surface properties and make them visible.
bool haveTransaction = false;
for (size_t i = 0; i < numSprites; i++) {
SpriteUpdate& update = updates.editItemAt(i);
bool wantSurfaceVisibleAndDrawn = update.state.wantSurfaceVisible()
&& update.state.surfaceDrawn;
bool becomingVisible = wantSurfaceVisibleAndDrawn && !update.state.surfaceVisible;
bool becomingHidden = !wantSurfaceVisibleAndDrawn && update.state.surfaceVisible;
if (update.state.surfaceControl != NULL && (becomingVisible || becomingHidden
|| (wantSurfaceVisibleAndDrawn && (update.state.dirty & (DIRTY_ALPHA
| DIRTY_POSITION | DIRTY_TRANSFORMATION_MATRIX | DIRTY_LAYER
| DIRTY_VISIBILITY | DIRTY_HOTSPOT))))) {
status_t status;
if (!haveTransaction) {
SurfaceComposerClient::openGlobalTransaction();
haveTransaction = true;
}
if (wantSurfaceVisibleAndDrawn
&& (becomingVisible || (update.state.dirty & DIRTY_ALPHA))) {
status = update.state.surfaceControl->setAlpha(update.state.alpha);
if (status) {
ALOGE("Error %d setting sprite surface alpha.", status);
}
}
if (wantSurfaceVisibleAndDrawn
&& (becomingVisible || (update.state.dirty & (DIRTY_POSITION
| DIRTY_HOTSPOT)))) {
status = update.state.surfaceControl->setPosition(
update.state.positionX - update.state.icon.hotSpotX,
update.state.positionY - update.state.icon.hotSpotY);
if (status) {
ALOGE("Error %d setting sprite surface position.", status);
}
}
if (wantSurfaceVisibleAndDrawn
&& (becomingVisible
|| (update.state.dirty & DIRTY_TRANSFORMATION_MATRIX))) {
status = update.state.surfaceControl->setMatrix(
update.state.transformationMatrix.dsdx,
update.state.transformationMatrix.dtdx,
update.state.transformationMatrix.dsdy,
update.state.transformationMatrix.dtdy);
if (status) {
ALOGE("Error %d setting sprite surface transformation matrix.", status);
}
}
int32_t surfaceLayer = mOverlayLayer + update.state.layer;
if (wantSurfaceVisibleAndDrawn
&& (becomingVisible || (update.state.dirty & DIRTY_LAYER))) {
status = update.state.surfaceControl->setLayer(surfaceLayer);
if (status) {
ALOGE("Error %d setting sprite surface layer.", status);
}
}
if (becomingVisible) {
status = update.state.surfaceControl->show();
if (status) {
ALOGE("Error %d showing sprite surface.", status);
} else {
update.state.surfaceVisible = true;
update.surfaceChanged = surfaceChanged = true;
}
} else if (becomingHidden) {
status = update.state.surfaceControl->hide();
if (status) {
ALOGE("Error %d hiding sprite surface.", status);
} else {
update.state.surfaceVisible = false;
update.surfaceChanged = surfaceChanged = true;
}
}
}
}
if (haveTransaction) {
SurfaceComposerClient::closeGlobalTransaction();
}
// If any surfaces were changed, write back the new surface properties to the sprites.
if (surfaceChanged) { // acquire lock
AutoMutex _l(mLock);
for (size_t i = 0; i < numSprites; i++) {
const SpriteUpdate& update = updates.itemAt(i);
if (update.surfaceChanged) {
update.sprite->setSurfaceLocked(update.state.surfaceControl,
update.state.surfaceWidth, update.state.surfaceHeight,
update.state.surfaceDrawn, update.state.surfaceVisible);
}
}
} // release lock
// Clear the sprite update vector outside the lock. It is very important that
// we do not clear sprite references inside the lock since we could be releasing
// the last remaining reference to the sprite here which would result in the
// sprite being deleted and the lock being reacquired by the sprite destructor
// while already held.
updates.clear();
}
int Mouse::DrawCursor(CursorBounds desireBounds)
{
status_t status;
if (mWantChange && mSurfaceVisible) {
SurfaceComposerClient::openGlobalTransaction();
status = mSurfaceControl->show();
if (status) {
printf("Error %d setting sprite surface show.\n", status);
}
SurfaceComposerClient::closeGlobalTransaction();
mWantChange = false;
}
if (mWantChange && !mSurfaceVisible) {
SurfaceComposerClient::openGlobalTransaction();
status = mSurfaceControl->hide();
if (status) {
printf("Error %d setting sprite surface hide.\n", status);
}
SurfaceComposerClient::closeGlobalTransaction();
mWantChange = false;
}
if (mUpdateCursor && mSurfaceVisible) {
SurfaceComposerClient::openGlobalTransaction();
status = mSurfaceControl->setLayer(INT_MAX - 1);
if (status) {
printf("Error %d setting sprite surface setlayer.\n", status);
}
SurfaceComposerClient::closeGlobalTransaction();
SurfaceComposerClient::openGlobalTransaction();
if (desireBounds.width != mWidth || desireBounds.height != mHeight) {
//SurfaceComposerClient::openGlobalTransaction();
status = mSurfaceControl->setSize(mWidth, mHeight);
if (status) {
printf("Error %d setting sprite surface show.\n", status);
}
mWidth = desireBounds.width;
mHeight = desireBounds.height;
}
SurfaceComposerClient::closeGlobalTransaction();
sp<Surface> surface = mSurfaceControl->getSurface();
ANativeWindow_Buffer outBuffer;
status = surface->lock(&outBuffer, NULL);
SkBitmap surfaceBitmap;
ssize_t bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
surfaceBitmap.setConfig(SkBitmap::kARGB_8888_Config,
outBuffer.width, outBuffer.height, bpr);
printf("surface bpr size %d stride %d width %d height %d\n", bpr, outBuffer.stride, outBuffer.width, outBuffer.height);
SkBitmap srcBitmap;
bpr = desireBounds.width * bytesPerPixel(outBuffer.format);
srcBitmap.setConfig(SkBitmap::kARGB_8888_Config, desireBounds.width,
desireBounds.height, bpr);
printf("srcbitmap bpr size %d width %d height %d\n", bpr, desireBounds.width, desireBounds.height);
surfaceBitmap.setPixels(outBuffer.bits);
srcBitmap.setPixels(mDrawBitmaps);
SkCanvas surfaceCanvas(surfaceBitmap);
SkPaint paint;
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
surfaceCanvas.drawBitmap(srcBitmap, 0, 0, &paint);
if (outBuffer.width > uint32_t(srcBitmap.width())) {
paint.setColor(0); // transparent fill color
surfaceCanvas.drawRectCoords(srcBitmap.width(), 0, outBuffer.width, srcBitmap.height(), paint);
}
if (outBuffer.height > uint32_t(srcBitmap.height())) {
paint.setColor(0); // transparent fill color
surfaceCanvas.drawRectCoords(0, srcBitmap.height(), outBuffer.width, outBuffer.height, paint);
}
status = surface->unlockAndPost();
if (status) {
printf("Error %d unlocking and posting sprite surface after drawing.\n", status);
}
mUpdateCursor = false;
}
if (mMove && mSurfaceVisible) {
if (desireBounds.spotX != mSpotX) {
mSpotX = desireBounds.spotX;
}
if (desireBounds.spotY != mSpotY) {
mSpotY = desireBounds.spotY;
}
SurfaceComposerClient::openGlobalTransaction();
status = mSurfaceControl->setPosition(mPos.x - mSpotX, mPos.y - mSpotY);
if (status) {
printf("Error %d setting sprite surface position.\n", status);
}
SurfaceComposerClient::closeGlobalTransaction();
mMove = false;
}
return 0;
}
