The Tor Browser: widget/gonk/libui/SpriteController.cpp@6474c204b198 (annotated)

widget/gonk/libui/SpriteController.cpp@6474c204b198 (annotated)

widget/gonk/libui/SpriteController.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 #define LOG_TAG "Sprites"
 //#define LOG_NDEBUG 0
 #include "SpriteController.h"
 #include "cutils_log.h"
 #include <utils/String8.h>
 #ifdef HAVE_ANDROID_OS
 #include <gui/Surface.h>
 #endif
 #include <SkBitmap.h>
 #include <SkCanvas.h>
 #include <SkColor.h>
 #include <SkPaint.h>
 #include <SkXfermode.h>
 #include <android/native_window.h>
 namespace android {
 // --- SpriteController ---
 SpriteController::SpriteController(const sp<Looper>& looper, int32_t overlayLayer) :
         mLooper(looper), mOverlayLayer(overlayLayer) {
 #ifdef HAVE_ANDROID_OS
     mHandler = new WeakMessageHandler(this);
 #endif
     mLocked.transactionNestingCount = 0;
     mLocked.deferredSpriteUpdate = false;
 }
 SpriteController::~SpriteController() {
 #ifdef HAVE_ANDROID_OS
     mLooper->removeMessages(mHandler);
     if (mSurfaceComposerClient != NULL) {
         mSurfaceComposerClient->dispose();
         mSurfaceComposerClient.clear();
     }
 #endif
 }
 sp<Sprite> SpriteController::createSprite() {
     return new SpriteImpl(this);
 }
 void SpriteController::openTransaction() {
     AutoMutex _l(mLock);
     mLocked.transactionNestingCount += 1;
 }
 void SpriteController::closeTransaction() {
     AutoMutex _l(mLock);
     LOG_ALWAYS_FATAL_IF(mLocked.transactionNestingCount == 0,
             "Sprite closeTransaction() called but there is no open sprite transaction");
     mLocked.transactionNestingCount -= 1;
     if (mLocked.transactionNestingCount == 0 && mLocked.deferredSpriteUpdate) {
         mLocked.deferredSpriteUpdate = false;
 #ifdef HAVE_ANDROID_OS
         mLooper->sendMessage(mHandler, Message(MSG_UPDATE_SPRITES));
 #endif
     }
 }
 void SpriteController::invalidateSpriteLocked(const sp<SpriteImpl>& sprite) {
     bool wasEmpty = mLocked.invalidatedSprites.isEmpty();
     mLocked.invalidatedSprites.push(sprite);
     if (wasEmpty) {
         if (mLocked.transactionNestingCount != 0) {
             mLocked.deferredSpriteUpdate = true;
         } else {
 #ifdef HAVE_ANDROID_OS
             mLooper->sendMessage(mHandler, Message(MSG_UPDATE_SPRITES));
 #endif
         }
     }
 }
 #ifdef HAVE_ANDROID_OS
 void SpriteController::disposeSurfaceLocked(const sp<SurfaceControl>& surfaceControl) {
     bool wasEmpty = mLocked.disposedSurfaces.isEmpty();
     mLocked.disposedSurfaces.push(surfaceControl);
     if (wasEmpty) {
         mLooper->sendMessage(mHandler, Message(MSG_DISPOSE_SURFACES));
     }
 }
 void SpriteController::handleMessage(const Message& message) {
     switch (message.what) {
     case MSG_UPDATE_SPRITES:
         doUpdateSprites();
         break;
     case MSG_DISPOSE_SURFACES:
         doDisposeSurfaces();
         break;
     }
 }
 #endif
 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);
 #ifdef HAVE_ANDROID_OS
         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;
             }
         }
 #endif
     }
     // Resize sprites if needed, inside a global transaction.
     bool haveGlobalTransaction = false;
     for (size_t i = 0; i < numSprites; i++) {
         SpriteUpdate& update = updates.editItemAt(i);
 #ifdef HAVE_ANDROID_OS
         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;
                         }
                     }
                 }
             }
         }
 #endif
     }
 #ifdef HAVE_ANDROID_OS
     if (haveGlobalTransaction) {
         SurfaceComposerClient::closeGlobalTransaction();
     }
 #endif
     // 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;
         }
 #ifdef HAVE_ANDROID_OS
         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.setConfig(SkBitmap::kARGB_8888_Config,
                         outBuffer.width, outBuffer.height, bpr);
                 surfaceBitmap.setPixels(outBuffer.bits);
                 SkCanvas surfaceCanvas(surfaceBitmap);
                 SkPaint paint;
                 paint.setXfermodeMode(SkXfermode::kSrc_Mode);
                 surfaceCanvas.drawBitmap(update.state.icon.bitmap, 0, 0, &paint);
                 if (outBuffer.width > uint32_t(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 > uint32_t(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;
                 }
             }
         }
 #endif
     }
     // 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;
 #ifdef HAVE_ANDROID_OS
         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;
                 }
             }
         }
 #endif
     }
 #ifdef HAVE_ANDROID_OS
     if (haveTransaction) {
         SurfaceComposerClient::closeGlobalTransaction();
     }
 #endif
     // 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);
 #ifdef HAVE_ANDROID_OS
             if (update.surfaceChanged) {
                 update.sprite->setSurfaceLocked(update.state.surfaceControl,
                         update.state.surfaceWidth, update.state.surfaceHeight,
                         update.state.surfaceDrawn, update.state.surfaceVisible);
             }
 #endif
         }
     } // 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();
 }
 void SpriteController::doDisposeSurfaces() {
 #ifdef HAVE_ANDROID_OS
     // Collect disposed surfaces.
     Vector<sp<SurfaceControl> > disposedSurfaces;
     { // acquire lock
         AutoMutex _l(mLock);
         disposedSurfaces = mLocked.disposedSurfaces;
         mLocked.disposedSurfaces.clear();
     } // release lock
     // Release the last reference to each surface outside of the lock.
     // We don't want the surfaces to be deleted while we are holding our lock.
     disposedSurfaces.clear();
 #endif
 }
 void SpriteController::ensureSurfaceComposerClient() {
 #ifdef HAVE_ANDROID_OS
     if (mSurfaceComposerClient == NULL) {
         mSurfaceComposerClient = new SurfaceComposerClient();
     }
 #endif
 }
 #ifdef HAVE_ANDROID_OS
 sp<SurfaceControl> SpriteController::obtainSurface(int32_t width, int32_t height) {
     ensureSurfaceComposerClient();
     sp<SurfaceControl> surfaceControl = mSurfaceComposerClient->createSurface(
             String8("Sprite"), width, height, PIXEL_FORMAT_RGBA_8888,
             ISurfaceComposerClient::eHidden);
     if (surfaceControl == NULL || !surfaceControl->isValid()) {
         ALOGE("Error creating sprite surface.");
         return NULL;
     }
     return surfaceControl;
 }
 #endif
 // --- SpriteController::SpriteImpl ---
 SpriteController::SpriteImpl::SpriteImpl(const sp<SpriteController> controller) :
         mController(controller) {
 }
 SpriteController::SpriteImpl::~SpriteImpl() {
     AutoMutex _m(mController->mLock);
 #ifdef HAVE_ANDROID_OS
     // Let the controller take care of deleting the last reference to sprite
     // surfaces so that we do not block the caller on an IPC here.
     if (mLocked.state.surfaceControl != NULL) {
         mController->disposeSurfaceLocked(mLocked.state.surfaceControl);
         mLocked.state.surfaceControl.clear();
     }
 #endif
 }
 void SpriteController::SpriteImpl::setIcon(const SpriteIcon& icon) {
     AutoMutex _l(mController->mLock);
 #ifdef HAVE_ANDROID_OS
     uint32_t dirty;
     if (icon.isValid()) {
         icon.bitmap.copyTo(&mLocked.state.icon.bitmap, SkBitmap::kARGB_8888_Config);
         if (!mLocked.state.icon.isValid()
                 || mLocked.state.icon.hotSpotX != icon.hotSpotX
                 || mLocked.state.icon.hotSpotY != icon.hotSpotY) {
             mLocked.state.icon.hotSpotX = icon.hotSpotX;
             mLocked.state.icon.hotSpotY = icon.hotSpotY;
             dirty = DIRTY_BITMAP | DIRTY_HOTSPOT;
         } else {
             dirty = DIRTY_BITMAP;
         }
     } else if (mLocked.state.icon.isValid()) {
         mLocked.state.icon.bitmap.reset();
         dirty = DIRTY_BITMAP | DIRTY_HOTSPOT;
     } else {
         return; // setting to invalid icon and already invalid so nothing to do
     }
     invalidateLocked(dirty);
 #endif
 }
 void SpriteController::SpriteImpl::setVisible(bool visible) {
     AutoMutex _l(mController->mLock);
     if (mLocked.state.visible != visible) {
         mLocked.state.visible = visible;
         invalidateLocked(DIRTY_VISIBILITY);
     }
 }
 void SpriteController::SpriteImpl::setPosition(float x, float y) {
     AutoMutex _l(mController->mLock);
     if (mLocked.state.positionX != x || mLocked.state.positionY != y) {
         mLocked.state.positionX = x;
         mLocked.state.positionY = y;
         invalidateLocked(DIRTY_POSITION);
     }
 }
 void SpriteController::SpriteImpl::setLayer(int32_t layer) {
     AutoMutex _l(mController->mLock);
     if (mLocked.state.layer != layer) {
         mLocked.state.layer = layer;
         invalidateLocked(DIRTY_LAYER);
     }
 }
 void SpriteController::SpriteImpl::setAlpha(float alpha) {
     AutoMutex _l(mController->mLock);
     if (mLocked.state.alpha != alpha) {
         mLocked.state.alpha = alpha;
         invalidateLocked(DIRTY_ALPHA);
     }
 }
 void SpriteController::SpriteImpl::setTransformationMatrix(
         const SpriteTransformationMatrix& matrix) {
     AutoMutex _l(mController->mLock);
     if (mLocked.state.transformationMatrix != matrix) {
         mLocked.state.transformationMatrix = matrix;
         invalidateLocked(DIRTY_TRANSFORMATION_MATRIX);
     }
 }
 void SpriteController::SpriteImpl::invalidateLocked(uint32_t dirty) {
     bool wasDirty = mLocked.state.dirty;
     mLocked.state.dirty |= dirty;
     if (!wasDirty) {
         mController->invalidateSpriteLocked(this);
     }
 }
 } // namespace android

The Tor Browser / annotate

widget/gonk/libui/SpriteController.cpp@6474c204b198 (annotated)

widget/gonk/libui/SpriteController.cpp