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/*
* Copyright (C) 2018 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.
*/
#pragma once
#include "CanvasTransform.h"
#include "hwui/Bitmap.h"
#include "hwui/Canvas.h"
#include "utils/Macros.h"
#include "utils/TypeLogic.h"
#include "SkCanvas.h"
#include "SkCanvasVirtualEnforcer.h"
#include "SkDrawable.h"
#include "SkNoDrawCanvas.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkRect.h"
#include "SkTDArray.h"
#include "SkTemplates.h"
#include <vector>
namespace android {
namespace uirenderer {
enum class DisplayListOpType : uint8_t {
#define X(T) T,
#include "DisplayListOps.in"
#undef X
};
struct DisplayListOp {
const uint8_t type : 8;
const uint32_t skip : 24;
};
static_assert(sizeof(DisplayListOp) == 4);
class RecordingCanvas;
class DisplayListData final {
public:
DisplayListData() : mHasText(false) {}
~DisplayListData();
void draw(SkCanvas* canvas) const;
void reset();
bool empty() const { return fUsed == 0; }
void applyColorTransform(ColorTransform transform);
bool hasText() const { return mHasText; }
size_t usedSize() const { return fUsed; }
private:
friend class RecordingCanvas;
void flush();
void save();
void saveLayer(const SkRect*, const SkPaint*, const SkImageFilter*, const SkImage*,
const SkMatrix*, SkCanvas::SaveLayerFlags);
void saveBehind(const SkRect*);
void restore();
void concat(const SkMatrix&);
void setMatrix(const SkMatrix&);
void translate(SkScalar, SkScalar);
void translateZ(SkScalar);
void clipPath(const SkPath&, SkClipOp, bool aa);
void clipRect(const SkRect&, SkClipOp, bool aa);
void clipRRect(const SkRRect&, SkClipOp, bool aa);
void clipRegion(const SkRegion&, SkClipOp);
void drawPaint(const SkPaint&);
void drawBehind(const SkPaint&);
void drawPath(const SkPath&, const SkPaint&);
void drawRect(const SkRect&, const SkPaint&);
void drawRegion(const SkRegion&, const SkPaint&);
void drawOval(const SkRect&, const SkPaint&);
void drawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&);
void drawRRect(const SkRRect&, const SkPaint&);
void drawDRRect(const SkRRect&, const SkRRect&, const SkPaint&);
void drawAnnotation(const SkRect&, const char*, SkData*);
void drawDrawable(SkDrawable*, const SkMatrix*);
void drawPicture(const SkPicture*, const SkMatrix*, const SkPaint*);
void drawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&);
void drawImage(sk_sp<const SkImage>, SkScalar, SkScalar, const SkPaint*, BitmapPalette palette);
void drawImageNine(sk_sp<const SkImage>, const SkIRect&, const SkRect&, const SkPaint*);
void drawImageRect(sk_sp<const SkImage>, const SkRect*, const SkRect&, const SkPaint*,
SkCanvas::SrcRectConstraint, BitmapPalette palette);
void drawImageLattice(sk_sp<const SkImage>, const SkCanvas::Lattice&, const SkRect&,
const SkPaint*, BitmapPalette);
void drawPatch(const SkPoint[12], const SkColor[4], const SkPoint[4], SkBlendMode,
const SkPaint&);
void drawPoints(SkCanvas::PointMode, size_t, const SkPoint[], const SkPaint&);
void drawVertices(const SkVertices*, const SkVertices::Bone bones[], int boneCount, SkBlendMode,
const SkPaint&);
void drawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int,
SkBlendMode, const SkRect*, const SkPaint*);
void drawShadowRec(const SkPath&, const SkDrawShadowRec&);
void drawVectorDrawable(VectorDrawableRoot* tree);
template <typename T, typename... Args>
void* push(size_t, Args&&...);
template <typename Fn, typename... Args>
void map(const Fn[], Args...) const;
SkAutoTMalloc<uint8_t> fBytes;
size_t fUsed = 0;
size_t fReserved = 0;
bool mHasText : 1;
};
class RecordingCanvas final : public SkCanvasVirtualEnforcer<SkNoDrawCanvas> {
public:
RecordingCanvas();
void reset(DisplayListData*, const SkIRect& bounds);
sk_sp<SkSurface> onNewSurface(const SkImageInfo&, const SkSurfaceProps&) override;
void willSave() override;
SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
void willRestore() override;
bool onDoSaveBehind(const SkRect*) override;
void onFlush() override;
void didConcat(const SkMatrix&) override;
void didSetMatrix(const SkMatrix&) override;
void didTranslate(SkScalar, SkScalar) override;
void onClipRect(const SkRect&, SkClipOp, ClipEdgeStyle) override;
void onClipRRect(const SkRRect&, SkClipOp, ClipEdgeStyle) override;
void onClipPath(const SkPath&, SkClipOp, ClipEdgeStyle) override;
void onClipRegion(const SkRegion&, SkClipOp) override;
void onDrawPaint(const SkPaint&) override;
void onDrawBehind(const SkPaint&) override;
void onDrawPath(const SkPath&, const SkPaint&) override;
void onDrawRect(const SkRect&, const SkPaint&) override;
void onDrawRegion(const SkRegion&, const SkPaint&) override;
void onDrawOval(const SkRect&, const SkPaint&) override;
void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override;
void onDrawRRect(const SkRRect&, const SkPaint&) override;
void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
void onDrawDrawable(SkDrawable*, const SkMatrix*) override;
void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
void onDrawAnnotation(const SkRect&, const char[], SkData*) override;
void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override;
void onDrawBitmap(const SkBitmap&, SkScalar, SkScalar, const SkPaint*) override;
void onDrawBitmapLattice(const SkBitmap&, const Lattice&, const SkRect&,
const SkPaint*) override;
void onDrawBitmapNine(const SkBitmap&, const SkIRect&, const SkRect&, const SkPaint*) override;
void onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*,
SrcRectConstraint) override;
void drawImage(const sk_sp<SkImage>& image, SkScalar left, SkScalar top, const SkPaint* paint,
BitmapPalette pallete);
void drawImageRect(const sk_sp<SkImage>& image, const SkRect& src, const SkRect& dst,
const SkPaint* paint, SrcRectConstraint constraint, BitmapPalette palette);
void drawImageLattice(const sk_sp<SkImage>& image, const Lattice& lattice, const SkRect& dst,
const SkPaint* paint, BitmapPalette palette);
void onDrawImage(const SkImage*, SkScalar, SkScalar, const SkPaint*) override;
void onDrawImageLattice(const SkImage*, const Lattice&, const SkRect&, const SkPaint*) override;
void onDrawImageNine(const SkImage*, const SkIRect&, const SkRect&, const SkPaint*) override;
void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
SrcRectConstraint) override;
void onDrawPatch(const SkPoint[12], const SkColor[4], const SkPoint[4], SkBlendMode,
const SkPaint&) override;
void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
void onDrawVerticesObject(const SkVertices*, const SkVertices::Bone bones[], int boneCount,
SkBlendMode, const SkPaint&) override;
void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int,
SkBlendMode, const SkRect*, const SkPaint*) override;
void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override;
void drawVectorDrawable(VectorDrawableRoot* tree);
/**
* If "isClipMayBeComplex" returns false, it is guaranteed the current clip is a rectangle.
* If the return value is true, then clip may or may not be complex (there is no guarantee).
*/
inline bool isClipMayBeComplex() { return mClipMayBeComplex; }
private:
typedef SkCanvasVirtualEnforcer<SkNoDrawCanvas> INHERITED;
inline void setClipMayBeComplex() {
if (!mClipMayBeComplex) {
mComplexSaveCount = mSaveCount;
mClipMayBeComplex = true;
}
}
DisplayListData* fDL;
/**
* mClipMayBeComplex tracks if the current clip is a rectangle. This flag is used to promote
* FunctorDrawable to a layer, if it is clipped by a non-rect.
*/
bool mClipMayBeComplex = false;
/**
* mSaveCount is the current level of our save tree.
*/
int mSaveCount = 0;
/**
* mComplexSaveCount is the first save level, which has a complex clip. Every level below
* mComplexSaveCount is assumed to have a complex clip and every level above mComplexSaveCount
* is guaranteed to not be complex.
*/
int mComplexSaveCount = 0;
};
} // namespace uirenderer
} // namespace android
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