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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPipeCanvas_DEFINED
#define SkPipeCanvas_DEFINED
#include "SkCanvasVirtualEnforcer.h"
#include "SkDeduper.h"
#include "SkImage.h"
#include "SkNoDrawCanvas.h"
#include "SkPipe.h"
#include "SkTypeface.h"
#include "SkWriteBuffer.h"
class SkPipeCanvas;
class SkPipeWriter;
template <typename T> class SkTIndexSet {
public:
void reset() { fArray.reset(); }
// returns the found index or 0
int find(const T& key) const {
const Rec* stop = fArray.end();
for (const Rec* curr = fArray.begin(); curr < stop; ++curr) {
if (key == curr->fKey) {
return curr->fIndex;
}
}
return 0;
}
// returns the new index
int add(const T& key) {
Rec* rec = fArray.append();
rec->fKey = key;
rec->fIndex = fNextIndex++;
return rec->fIndex;
}
private:
struct Rec {
T fKey;
int fIndex;
};
SkTDArray<Rec> fArray;
int fNextIndex = 1;
};
class SkPipeDeduper : public SkDeduper {
public:
void resetCaches() {
fImages.reset();
fPictures.reset();
fTypefaces.reset();
fFactories.reset();
}
void setCanvas(SkPipeCanvas* canvas) { fPipeCanvas = canvas; }
void setStream(SkWStream* stream) { fStream = stream; }
void setSerialProcs(const SkSerialProcs& procs) { fProcs = procs; }
// returns 0 if not found
int findImage(SkImage* image) const { return fImages.find(image->uniqueID()); }
int findPicture(SkPicture* picture) const { return fPictures.find(picture->uniqueID()); }
int findOrDefineImage(SkImage*) override;
int findOrDefinePicture(SkPicture*) override;
int findOrDefineTypeface(SkTypeface*) override;
int findOrDefineFactory(SkFlattenable*) override;
private:
SkPipeCanvas* fPipeCanvas = nullptr;
SkWStream* fStream = nullptr;
SkSerialProcs fProcs;
// All our keys (at the moment) are 32bit uniqueIDs
SkTIndexSet<uint32_t> fImages;
SkTIndexSet<uint32_t> fPictures;
SkTIndexSet<uint32_t> fTypefaces;
SkTIndexSet<SkFlattenable::Factory> fFactories;
};
class SkPipeCanvas : public SkCanvasVirtualEnforcer<SkNoDrawCanvas> {
public:
SkPipeCanvas(const SkRect& cull, SkPipeDeduper*, SkWStream*);
~SkPipeCanvas() override;
protected:
void willSave() override;
SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
void willRestore() override;
void didConcat(const SkMatrix&) override;
void didSetMatrix(const SkMatrix&) override;
void onDrawArc(const SkRect&, SkScalar startAngle, SkScalar sweepAngle, bool useCenter,
const SkPaint&) override;
void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
int count, SkBlendMode, const SkRect* cull, const SkPaint*) override;
void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
const SkPaint&) override;
void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
const SkPaint&) override;
void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
SkScalar constY, const SkPaint&) override;
void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath&, const SkMatrix*,
const SkPaint&) override;
void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, const SkPaint&) override;
void onDrawTextRSXform(const void* text, size_t byteLength, const SkRSXform xform[],
const SkRect* cull, const SkPaint& paint) override;
void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], const SkPoint texCoords[4],
SkBlendMode, const SkPaint&) override;
void onDrawPaint(const SkPaint&) override;
void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
void onDrawRect(const SkRect&, const SkPaint&) override;
void onDrawOval(const SkRect&, const SkPaint&) override;
void onDrawRegion(const SkRegion&, const SkPaint&) override;
void onDrawRRect(const SkRRect&, const SkPaint&) override;
void onDrawPath(const SkPath&, const SkPaint&) override;
void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override;
void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
const SkPaint*, SrcRectConstraint) override;
void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
const SkPaint*) override;
void onDrawImageLattice(const SkImage*, const Lattice& lattice, const SkRect& dst,
const SkPaint*) override;
void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) 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 onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
void onDrawAnnotation(const SkRect&, const char[], SkData*) override;
void onDrawDrawable(SkDrawable*, const SkMatrix*) override;
// These we turn into images
void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
SrcRectConstraint) override;
void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
const SkPaint*) override;
void onDrawBitmapLattice(const SkBitmap&, const Lattice& lattice, const SkRect& dst,
const SkPaint*) override;
private:
SkPipeDeduper* fDeduper;
SkWStream* fStream;
friend class SkPipeWriter;
typedef SkCanvasVirtualEnforcer<SkNoDrawCanvas> INHERITED;
};
#endif
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