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Diffstat (limited to 'libs/hwui/StatefulBaseRenderer.h')
| -rw-r--r-- | libs/hwui/StatefulBaseRenderer.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/libs/hwui/StatefulBaseRenderer.h b/libs/hwui/StatefulBaseRenderer.h deleted file mode 100644 index 745e48a..0000000 --- a/libs/hwui/StatefulBaseRenderer.h +++ /dev/null @@ -1,170 +0,0 @@ -/* - * Copyright (C) 2014 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 ANDROID_HWUI_STATEFUL_BASE_RENDERER_H -#define ANDROID_HWUI_STATEFUL_BASE_RENDERER_H - -#include <utils/RefBase.h> - -#include "Renderer.h" -#include "Snapshot.h" - -namespace android { -namespace uirenderer { - -/** - * Abstract Renderer subclass, which implements Canvas state methods. - * - * Manages the Snapshot stack, implementing matrix, save/restore, and clipping methods in the - * Renderer interface. Drawing and recording classes that extend StatefulBaseRenderer will have - * different use cases: - * - * Drawing subclasses (i.e. OpenGLRenderer) can query attributes (such as transform) or hook into - * changes (e.g. save/restore) with minimal surface area for manipulating the stack itself. - * - * Recording subclasses (i.e. DisplayListRenderer) can both record and pass through state operations - * to StatefulBaseRenderer, so that not only will querying operations work (getClip/Matrix), but so - * that quickRejection can also be used. - */ -class StatefulBaseRenderer : public Renderer { -public: - StatefulBaseRenderer(); - - virtual status_t prepare(bool opaque) { - return prepareDirty(0.0f, 0.0f, mWidth, mHeight, opaque); - } - - /** - * Initialize the first snapshot, computing the projection matrix, and stores the dimensions of - * the render target. - */ - virtual void setViewport(int width, int height); - void initializeSaveStack(float clipLeft, float clipTop, float clipRight, float clipBottom, - const Vector3& lightCenter); - - // getters - bool hasRectToRectTransform() const { - return CC_LIKELY(currentTransform()->rectToRect()); - } - - // Save (layer) - virtual int getSaveCount() const { return mSaveCount; } - virtual int save(int flags); - virtual void restore(); - virtual void restoreToCount(int saveCount); - //virtual int saveLayer(float left, float top, float right, float bottom, - // int alpha, SkXfermode::Mode mode, int flags); - - // Matrix - virtual void getMatrix(SkMatrix* outMatrix) const; - virtual void translate(float dx, float dy, float dz = 0.0f); - virtual void rotate(float degrees); - virtual void scale(float sx, float sy); - virtual void skew(float sx, float sy); - - virtual void setMatrix(const SkMatrix& matrix); - void setMatrix(const Matrix4& matrix); // internal only convenience method - virtual void concatMatrix(const SkMatrix& matrix); - void concatMatrix(const Matrix4& matrix); // internal only convenience method - - // Clip - virtual const Rect& getLocalClipBounds() const { return mSnapshot->getLocalClip(); } - - virtual bool quickRejectConservative(float left, float top, float right, float bottom) const; - - virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op); - virtual bool clipPath(const SkPath* path, SkRegion::Op op); - virtual bool clipRegion(const SkRegion* region, SkRegion::Op op); - - /** - * Does not support different clipping Ops (that is, every call to setClippingOutline is - * effectively using SkRegion::kReplaceOp) - * - * The clipping outline is independent from the regular clip. - */ - void setClippingOutline(LinearAllocator& allocator, const Outline* outline); - void setClippingRoundRect(LinearAllocator& allocator, - const Rect& rect, float radius, bool highPriority = true); - - inline const mat4* currentTransform() const { - return mSnapshot->transform; - } - -protected: - const Rect& getRenderTargetClipBounds() const { return mSnapshot->getRenderTargetClip(); } - - int getWidth() { return mWidth; } - int getHeight() { return mHeight; } - - // Save - int saveSnapshot(int flags); - void restoreSnapshot(); - - // allows subclasses to control what value is stored in snapshot's fbo field in - // initializeSaveStack - virtual GLuint getTargetFbo() const { - return -1; - } - - // Clip - bool calculateQuickRejectForScissor(float left, float top, float right, float bottom, - bool* clipRequired, bool* roundRectClipRequired, bool snapOut) const; - - /** - * Called just after a restore has occurred. The 'removed' snapshot popped from the stack, - * 'restored' snapshot has become the top/current. - * - * Subclasses can override this method to handle layer restoration - */ - virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) {}; - - virtual void onViewportInitialized() {}; - - inline const Rect* currentClipRect() const { - return mSnapshot->clipRect; - } - - inline const Snapshot* currentSnapshot() const { - return mSnapshot != NULL ? mSnapshot.get() : mFirstSnapshot.get(); - } - - inline const Snapshot* firstSnapshot() const { - return mFirstSnapshot.get(); - } - - // indicites that the clip has been changed since the last time it was consumed - bool mDirtyClip; - -private: - // Dimensions of the drawing surface - int mWidth, mHeight; - - // Number of saved states - int mSaveCount; - - // Base state - sp<Snapshot> mFirstSnapshot; - -protected: - // Current state - // TODO: should become private, once hooks needed by OpenGLRenderer are added - sp<Snapshot> mSnapshot; -}; // class StatefulBaseRenderer - -}; // namespace uirenderer -}; // namespace android - -#endif // ANDROID_HWUI_STATEFUL_BASE_RENDERER_H |