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* Copyright 2011 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkPictureRecord_DEFINED
#define SkPictureRecord_DEFINED
#include "SkCanvas.h"
#include "SkCanvasVirtualEnforcer.h"
#include "SkFlattenable.h"
#include "SkPicture.h"
#include "SkPictureData.h"
#include "SkTArray.h"
#include "SkTDArray.h"
#include "SkTHash.h"
#include "SkTo.h"
#include "SkVertices.h"
#include "SkWriter32.h"
// These macros help with packing and unpacking a single byte value and
// a 3 byte value into/out of a uint32_t
#define MASK_24 0x00FFFFFF
#define UNPACK_8_24(combined, small, large) \
small = (combined >> 24) & 0xFF; \
large = combined & MASK_24
#define PACK_8_24(small, large) ((small << 24) | large)
class SkPictureRecord : public SkCanvasVirtualEnforcer<SkCanvas> {
SkPictureRecord(const SkISize& dimensions, uint32_t recordFlags);
const SkTArray<sk_sp<const SkPicture>>& getPictures() const {
return fPictures;
const SkTArray<sk_sp<SkDrawable>>& getDrawables() const {
return fDrawables;
const SkTArray<sk_sp<const SkTextBlob>>& getTextBlobs() const {
return fTextBlobs;
const SkTArray<sk_sp<const SkVertices>>& getVertices() const {
return fVertices;
const SkTArray<sk_sp<const SkImage>>& getImages() const {
return fImages;
sk_sp<SkData> opData() const {
this->validate(fWriter.bytesWritten(), 0);
if (fWriter.bytesWritten() == 0) {
return SkData::MakeEmpty();
return fWriter.snapshotAsData();
void setFlags(uint32_t recordFlags) {
fRecordFlags = recordFlags;
const SkWriter32& writeStream() const {
return fWriter;
void beginRecording();
void endRecording();
void addNoOp();
void handleOptimization(int opt);
size_t recordRestoreOffsetPlaceholder(SkClipOp);
void fillRestoreOffsetPlaceholdersForCurrentStackLevel(uint32_t restoreOffset);
SkTDArray<int32_t> fRestoreOffsetStack;
SkTDArray<uint32_t> fCullOffsetStack;
* Write the 'drawType' operation and chunk size to the skp. 'size'
* can potentially be increased if the chunk size needs its own storage
* location (i.e., it overflows 24 bits).
* Returns the start offset of the chunk. This is the location at which
* the opcode & size are stored.
* TODO: since we are handing the size into here we could call reserve
* and then return a pointer to the memory storage. This could decrease
* allocation overhead but could lead to more wasted space (the tail
* end of blocks could go unused). Possibly add a second addDraw that
* operates in this manner.
size_t addDraw(DrawType drawType, size_t* size) {
size_t offset = fWriter.bytesWritten();
SkASSERT(0 != *size);
SkASSERT(((uint8_t) drawType) == drawType);
if (0 != (*size & ~MASK_24) || *size == MASK_24) {
fWriter.writeInt(PACK_8_24(drawType, MASK_24));
*size += 1;
} else {
fWriter.writeInt(PACK_8_24(drawType, SkToU32(*size)));
return offset;
void addInt(int value) {
void addScalar(SkScalar scalar) {
void addImage(const SkImage*);
void addMatrix(const SkMatrix& matrix);
void addPaint(const SkPaint& paint) { this->addPaintPtr(&paint); }
void addPaintPtr(const SkPaint* paint);
void addPatch(const SkPoint cubics[12]);
void addPath(const SkPath& path);
void addPicture(const SkPicture* picture);
void addDrawable(SkDrawable* picture);
void addPoint(const SkPoint& point);
void addPoints(const SkPoint pts[], int count);
void addRect(const SkRect& rect);
void addRectPtr(const SkRect* rect);
void addIRect(const SkIRect& rect);
void addIRectPtr(const SkIRect* rect);
void addRRect(const SkRRect&);
void addRegion(const SkRegion& region);
void addText(const void* text, size_t byteLength);
void addTextBlob(const SkTextBlob* blob);
void addVertices(const SkVertices*);
int find(const SkBitmap& bitmap);
void validate(size_t initialOffset, size_t size) const {
SkASSERT(fWriter.bytesWritten() == initialOffset + size);
sk_sp<SkSurface> onNewSurface(const SkImageInfo&, const SkSurfaceProps&) override;
bool onPeekPixels(SkPixmap*) override { return false; }
void onFlush() override;
void willSave() override;
SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
bool onDoSaveBehind(const SkRect*) override;
void willRestore() override;
void didConcat(const SkMatrix&) override;
void didSetMatrix(const SkMatrix&) override;
void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
const SkPaint& paint) override;
void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
const SkPoint texCoords[4], SkBlendMode, const SkPaint& paint) override;
void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int,
SkBlendMode, const SkRect*, 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 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 onDrawPath(const SkPath&, const SkPaint&) 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 SkCanvas::Lattice& lattice, const SkRect& dst,
const SkPaint*) override;
void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override;
void onDrawVerticesObject(const SkVertices*, const SkVertices::Bone bones[], int boneCount,
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 onDrawDrawable(SkDrawable*, const SkMatrix*) override;
void onDrawAnnotation(const SkRect&, const char[], SkData*) override;
void onDrawEdgeAAQuad(const SkRect&, const SkPoint[4], QuadAAFlags, SkColor,
SkBlendMode) override;
void onDrawEdgeAAImageSet(const ImageSetEntry[], int count, const SkPoint[], const SkMatrix[],
const SkPaint*, SrcRectConstraint) override;
int addPathToHeap(const SkPath& path); // does not write to ops stream
// These entry points allow the writing of matrices, clips, saves &
// restores to be deferred (e.g., if the MC state is being collapsed and
// only written out as needed).
void recordConcat(const SkMatrix& matrix);
void recordTranslate(const SkMatrix& matrix);
void recordScale(const SkMatrix& matrix);
size_t recordClipRect(const SkRect& rect, SkClipOp op, bool doAA);
size_t recordClipRRect(const SkRRect& rrect, SkClipOp op, bool doAA);
size_t recordClipPath(int pathID, SkClipOp op, bool doAA);
size_t recordClipRegion(const SkRegion& region, SkClipOp op);
void recordSave();
void recordSaveLayer(const SaveLayerRec&);
void recordRestore(bool fillInSkips = true);
void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override {
SK_ABORT("not reached");
void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
SrcRectConstraint) override {
SK_ABORT("not reached");
void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
const SkPaint*) override {
SK_ABORT("not reached");
void onDrawBitmapLattice(const SkBitmap&, const SkCanvas::Lattice& lattice, const SkRect& dst,
const SkPaint*) override {
SK_ABORT("not reached");
SkTArray<SkPaint> fPaints;
struct PathHash {
uint32_t operator()(const SkPath& p) { return p.getGenerationID(); }
SkTHashMap<SkPath, int, PathHash> fPaths;
SkWriter32 fWriter;
SkTArray<sk_sp<const SkImage>> fImages;
SkTArray<sk_sp<const SkPicture>> fPictures;
SkTArray<sk_sp<SkDrawable>> fDrawables;
SkTArray<sk_sp<const SkTextBlob>> fTextBlobs;
SkTArray<sk_sp<const SkVertices>> fVertices;
uint32_t fRecordFlags;
int fInitialSaveCount;
friend class SkPictureData; // for SkPictureData's SkPictureRecord-based constructor
typedef SkCanvasVirtualEnforcer<SkCanvas> INHERITED;