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Diffstat (limited to 'libs/hwui/ClipArea.h')
| -rw-r--r-- | libs/hwui/ClipArea.h | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/libs/hwui/ClipArea.h b/libs/hwui/ClipArea.h deleted file mode 100644 index a7a11801cfe2..000000000000 --- a/libs/hwui/ClipArea.h +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Copyright (C) 2015 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 CLIPAREA_H -#define CLIPAREA_H - -#include "Matrix.h" -#include "Rect.h" -#include "utils/Pair.h" - -#include <SkRegion.h> - -namespace android { -namespace uirenderer { - -class LinearAllocator; - -Rect transformAndCalculateBounds(const Rect& r, const Matrix4& transform); - -class TransformedRectangle { -public: - TransformedRectangle(); - TransformedRectangle(const Rect& bounds, const Matrix4& transform); - - bool canSimplyIntersectWith(const TransformedRectangle& other) const; - void intersectWith(const TransformedRectangle& other); - - bool isEmpty() const; - - const Rect& getBounds() const { return mBounds; } - - Rect transformedBounds() const { - Rect transformedBounds(transformAndCalculateBounds(mBounds, mTransform)); - return transformedBounds; - } - - const Matrix4& getTransform() const { return mTransform; } - - void transform(const Matrix4& transform) { - Matrix4 t; - t.loadMultiply(transform, mTransform); - mTransform = t; - } - -private: - Rect mBounds; - Matrix4 mTransform; -}; - -class RectangleList { -public: - RectangleList(); - - bool isEmpty() const; - int getTransformedRectanglesCount() const; - const TransformedRectangle& getTransformedRectangle(int i) const; - - void setEmpty(); - void set(const Rect& bounds, const Matrix4& transform); - bool intersectWith(const Rect& bounds, const Matrix4& transform); - void transform(const Matrix4& transform); - - SkRegion convertToRegion(const SkRegion& clip) const; - Rect calculateBounds() const; - - enum { kMaxTransformedRectangles = 5 }; - -private: - int mTransformedRectanglesCount; - TransformedRectangle mTransformedRectangles[kMaxTransformedRectangles]; -}; - -enum class ClipMode { - Rectangle, - RectangleList, - - // region and path - intersected. if either is empty, don't use - Region -}; - -struct ClipBase { - explicit ClipBase(ClipMode mode) : mode(mode) {} - explicit ClipBase(const Rect& rect) : mode(ClipMode::Rectangle), rect(rect) {} - const ClipMode mode; - bool intersectWithRoot = false; - // Bounds of the clipping area, used to define the scissor, and define which - // portion of the stencil is updated/used - Rect rect; - - void dump() const; -}; - -struct ClipRect : ClipBase { - explicit ClipRect(const Rect& rect) : ClipBase(rect) {} -}; - -struct ClipRectList : ClipBase { - explicit ClipRectList(const RectangleList& rectList) - : ClipBase(ClipMode::RectangleList), rectList(rectList) {} - RectangleList rectList; -}; - -struct ClipRegion : ClipBase { - explicit ClipRegion(const SkRegion& region) : ClipBase(ClipMode::Region), region(region) {} - ClipRegion() : ClipBase(ClipMode::Region) {} - SkRegion region; -}; - -class ClipArea { -public: - ClipArea(); - - void setViewportDimensions(int width, int height); - - bool isEmpty() const { return mClipRect.isEmpty(); } - - void setEmpty(); - void setClip(float left, float top, float right, float bottom); - void clipRectWithTransform(const Rect& r, const mat4* transform, SkRegion::Op op); - void clipPathWithTransform(const SkPath& path, const mat4* transform, SkRegion::Op op); - - const Rect& getClipRect() const { return mClipRect; } - - const SkRegion& getClipRegion() const { return mClipRegion; } - - const RectangleList& getRectangleList() const { return mRectangleList; } - - bool isRegion() const { return ClipMode::Region == mMode; } - - bool isSimple() const { return mMode == ClipMode::Rectangle; } - - bool isRectangleList() const { return mMode == ClipMode::RectangleList; } - - WARN_UNUSED_RESULT const ClipBase* serializeClip(LinearAllocator& allocator); - WARN_UNUSED_RESULT const ClipBase* serializeIntersectedClip( - LinearAllocator& allocator, const ClipBase* recordedClip, - const Matrix4& recordedClipTransform); - void applyClip(const ClipBase* recordedClip, const Matrix4& recordedClipTransform); - - static void applyTransformToRegion(const Matrix4& transform, SkRegion* region); - -private: - void enterRectangleMode(); - void rectangleModeClipRectWithTransform(const Rect& r, const mat4* transform, SkRegion::Op op); - - void enterRectangleListMode(); - void rectangleListModeClipRectWithTransform(const Rect& r, const mat4* transform, - SkRegion::Op op); - - void enterRegionModeFromRectangleMode(); - void enterRegionModeFromRectangleListMode(); - void enterRegionMode(); - void regionModeClipRectWithTransform(const Rect& r, const mat4* transform, SkRegion::Op op); - - void clipRegion(const SkRegion& region, SkRegion::Op op); - void ensureClipRegion(); - void onClipRegionUpdated(); - - // Called by every state modifying public method. - void onClipUpdated() { - mPostViewportClipObserved = true; - mLastSerialization = nullptr; - mLastResolutionResult = nullptr; - } - - SkRegion createViewportRegion() { return SkRegion(mViewportBounds.toSkIRect()); } - - void regionFromPath(const SkPath& path, SkRegion& pathAsRegion) { - // TODO: this should not mask every path to the viewport - this makes it impossible to use - // paths to clip to larger areas (which is valid e.g. with SkRegion::kReplace_Op) - pathAsRegion.setPath(path, createViewportRegion()); - } - - ClipMode mMode; - bool mPostViewportClipObserved = false; - bool mReplaceOpObserved = false; - - /** - * If mLastSerialization is non-null, it represents an already serialized copy - * of the current clip state. If null, it has not been computed. - */ - const ClipBase* mLastSerialization = nullptr; - - /** - * This pair of pointers is a single entry cache of most recently seen - */ - const ClipBase* mLastResolutionResult = nullptr; - const ClipBase* mLastResolutionClip = nullptr; - Matrix4 mLastResolutionTransform; - - Rect mViewportBounds; - Rect mClipRect; - SkRegion mClipRegion; - RectangleList mRectangleList; -}; - -} /* namespace uirenderer */ -} /* namespace android */ - -#endif /* CLIPAREA_H_ */ |