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diff --git a/widget/gonk/libui/SpriteController.h b/widget/gonk/libui/SpriteController.h
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-/*
- * 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.
- */
-
-#ifndef _UI_SPRITES_H
-#define _UI_SPRITES_H
-
-#include <utils/RefBase.h>
-#include <utils/Looper.h>
-
-#ifdef HAVE_ANDROID_OS
-#include <gui/SurfaceComposerClient.h>
-#endif
-
-#include <SkBitmap.h>
-
-namespace android {
-
-/*
- * Transformation matrix for a sprite.
- */
-struct SpriteTransformationMatrix {
- inline SpriteTransformationMatrix() : dsdx(1.0f), dtdx(0.0f), dsdy(0.0f), dtdy(1.0f) { }
- inline SpriteTransformationMatrix(float dsdx, float dtdx, float dsdy, float dtdy) :
- dsdx(dsdx), dtdx(dtdx), dsdy(dsdy), dtdy(dtdy) { }
-
- float dsdx;
- float dtdx;
- float dsdy;
- float dtdy;
-
- inline bool operator== (const SpriteTransformationMatrix& other) {
- return dsdx == other.dsdx
- && dtdx == other.dtdx
- && dsdy == other.dsdy
- && dtdy == other.dtdy;
- }
-
- inline bool operator!= (const SpriteTransformationMatrix& other) {
- return !(*this == other);
- }
-};
-
-/*
- * Icon that a sprite displays, including its hotspot.
- */
-struct SpriteIcon {
- inline SpriteIcon() : hotSpotX(0), hotSpotY(0) { }
-#ifdef HAVE_ANDROID_OS
- inline SpriteIcon(const SkBitmap& bitmap, float hotSpotX, float hotSpotY) :
- bitmap(bitmap), hotSpotX(hotSpotX), hotSpotY(hotSpotY) { }
-
- SkBitmap bitmap;
-#endif
- float hotSpotX;
- float hotSpotY;
-
- inline SpriteIcon copy() const {
-#ifdef HAVE_ANDROID_OS
- SkBitmap bitmapCopy;
- bitmap.copyTo(&bitmapCopy, SkBitmap::kARGB_8888_Config);
- return SpriteIcon(bitmapCopy, hotSpotX, hotSpotY);
-#else
- return SpriteIcon();
-#endif
- }
-
- inline void reset() {
-#ifdef HAVE_ANDROID_OS
- bitmap.reset();
- hotSpotX = 0;
- hotSpotY = 0;
-#endif
- }
-
- inline bool isValid() const {
-#ifdef HAVE_ANDROID_OS
- return !bitmap.isNull() && !bitmap.empty();
-#else
- return false;
-#endif
- }
-};
-
-/*
- * A sprite is a simple graphical object that is displayed on-screen above other layers.
- * The basic sprite class is an interface.
- * The implementation is provided by the sprite controller.
- */
-class Sprite : public RefBase {
-protected:
- Sprite() { }
- virtual ~Sprite() { }
-
-public:
- enum {
- // The base layer for pointer sprites.
- BASE_LAYER_POINTER = 0, // reserve space for 1 pointer
-
- // The base layer for spot sprites.
- BASE_LAYER_SPOT = 1, // reserve space for MAX_POINTER_ID spots
- };
-
- /* Sets the bitmap that is drawn by the sprite.
- * The sprite retains a copy of the bitmap for subsequent rendering. */
- virtual void setIcon(const SpriteIcon& icon) = 0;
-
- inline void clearIcon() {
- setIcon(SpriteIcon());
- }
-
- /* Sets whether the sprite is visible. */
- virtual void setVisible(bool visible) = 0;
-
- /* Sets the sprite position on screen, relative to the sprite's hot spot. */
- virtual void setPosition(float x, float y) = 0;
-
- /* Sets the layer of the sprite, relative to the system sprite overlay layer.
- * Layer 0 is the overlay layer, > 0 appear above this layer. */
- virtual void setLayer(int32_t layer) = 0;
-
- /* Sets the sprite alpha blend ratio between 0.0 and 1.0. */
- virtual void setAlpha(float alpha) = 0;
-
- /* Sets the sprite transformation matrix. */
- virtual void setTransformationMatrix(const SpriteTransformationMatrix& matrix) = 0;
-};
-
-/*
- * Displays sprites on the screen.
- *
- * This interface is used by PointerController and SpotController to draw pointers or
- * spot representations of fingers. It is not intended for general purpose use
- * by other components.
- *
- * All sprite position updates and rendering is performed asynchronously.
- *
- * Clients are responsible for animating sprites by periodically updating their properties.
- */
-class SpriteController : public MessageHandler {
-protected:
- virtual ~SpriteController();
-
-public:
- SpriteController(const sp<Looper>& looper, int32_t overlayLayer);
-
- /* Creates a new sprite, initially invisible. */
- sp<Sprite> createSprite();
-
- /* Opens or closes a transaction to perform a batch of sprite updates as part of
- * a single operation such as setPosition and setAlpha. It is not necessary to
- * open a transaction when updating a single property.
- * Calls to openTransaction() nest and must be matched by an equal number
- * of calls to closeTransaction(). */
- void openTransaction();
- void closeTransaction();
-
-private:
- enum {
- MSG_UPDATE_SPRITES,
- MSG_DISPOSE_SURFACES,
- };
-
- enum {
- DIRTY_BITMAP = 1 << 0,
- DIRTY_ALPHA = 1 << 1,
- DIRTY_POSITION = 1 << 2,
- DIRTY_TRANSFORMATION_MATRIX = 1 << 3,
- DIRTY_LAYER = 1 << 4,
- DIRTY_VISIBILITY = 1 << 5,
- DIRTY_HOTSPOT = 1 << 6,
- };
-
- /* Describes the state of a sprite.
- * This structure is designed so that it can be copied during updates so that
- * surfaces can be resized and redrawn without blocking the client by holding a lock
- * on the sprites for a long time.
- * Note that the SkBitmap holds a reference to a shared (and immutable) pixel ref. */
- struct SpriteState {
- inline SpriteState() :
- dirty(0), visible(false),
- positionX(0), positionY(0), layer(0), alpha(1.0f),
- surfaceWidth(0), surfaceHeight(0), surfaceDrawn(false), surfaceVisible(false) {
- }
-
- uint32_t dirty;
-
- SpriteIcon icon;
- bool visible;
- float positionX;
- float positionY;
- int32_t layer;
- float alpha;
- SpriteTransformationMatrix transformationMatrix;
-
-#ifdef HAVE_ANDROID_OS
- sp<SurfaceControl> surfaceControl;
-#endif
- int32_t surfaceWidth;
- int32_t surfaceHeight;
- bool surfaceDrawn;
- bool surfaceVisible;
-
- inline bool wantSurfaceVisible() const {
- return visible && alpha > 0.0f && icon.isValid();
- }
- };
-
- /* Client interface for a sprite.
- * Requests acquire a lock on the controller, update local state and request the
- * controller to invalidate the sprite.
- * The real heavy lifting of creating, resizing and redrawing surfaces happens
- * asynchronously with no locks held except in short critical section to copy
- * the sprite state before the work and update the sprite surface control afterwards.
- */
- class SpriteImpl : public Sprite {
- protected:
- virtual ~SpriteImpl();
-
- public:
- SpriteImpl(const sp<SpriteController> controller);
-
- virtual void setIcon(const SpriteIcon& icon);
- virtual void setVisible(bool visible);
- virtual void setPosition(float x, float y);
- virtual void setLayer(int32_t layer);
- virtual void setAlpha(float alpha);
- virtual void setTransformationMatrix(const SpriteTransformationMatrix& matrix);
-
- inline const SpriteState& getStateLocked() const {
- return mLocked.state;
- }
-
- inline void resetDirtyLocked() {
- mLocked.state.dirty = 0;
- }
-
-#ifdef HAVE_ANDROID_OS
- inline void setSurfaceLocked(const sp<SurfaceControl>& surfaceControl,
- int32_t width, int32_t height, bool drawn, bool visible) {
- mLocked.state.surfaceControl = surfaceControl;
- mLocked.state.surfaceWidth = width;
- mLocked.state.surfaceHeight = height;
- mLocked.state.surfaceDrawn = drawn;
- mLocked.state.surfaceVisible = visible;
- }
-#endif
-
- private:
- sp<SpriteController> mController;
-
- struct Locked {
- SpriteState state;
- } mLocked; // guarded by mController->mLock
-
- void invalidateLocked(uint32_t dirty);
- };
-
- /* Stores temporary information collected during the sprite update cycle. */
- struct SpriteUpdate {
- inline SpriteUpdate() : surfaceChanged(false) { }
- inline SpriteUpdate(const sp<SpriteImpl> sprite, const SpriteState& state) :
- sprite(sprite), state(state), surfaceChanged(false) {
- }
-
- sp<SpriteImpl> sprite;
- SpriteState state;
- bool surfaceChanged;
- };
-
- mutable Mutex mLock;
-
- sp<Looper> mLooper;
- const int32_t mOverlayLayer;
-#ifdef HAVE_ANDROID_OS
- sp<WeakMessageHandler> mHandler;
-
- sp<SurfaceComposerClient> mSurfaceComposerClient;
-#endif
-
- struct Locked {
- Vector<sp<SpriteImpl> > invalidatedSprites;
-#ifdef HAVE_ANDROID_OS
- Vector<sp<SurfaceControl> > disposedSurfaces;
-#endif
- uint32_t transactionNestingCount;
- bool deferredSpriteUpdate;
- } mLocked; // guarded by mLock
-
- void invalidateSpriteLocked(const sp<SpriteImpl>& sprite);
-#ifdef HAVE_ANDROID_OS
- void disposeSurfaceLocked(const sp<SurfaceControl>& surfaceControl);
-
- void handleMessage(const Message& message);
-#endif
- void doUpdateSprites();
- void doDisposeSurfaces();
-
- void ensureSurfaceComposerClient();
-#ifdef HAVE_ANDROID_OS
- sp<SurfaceControl> obtainSurface(int32_t width, int32_t height);
-#endif
-};
-
-} // namespace android
-
-#endif // _UI_SPRITES_H
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