/*
|
* Copyright 2014 Google Inc.
|
*
|
* Use of this source code is governed by a BSD-style license that can be
|
* found in the LICENSE file.
|
*/
|
|
#ifndef SkRecordDraw_DEFINED
|
#define SkRecordDraw_DEFINED
|
|
#include "SkBBoxHierarchy.h"
|
#include "SkBigPicture.h"
|
#include "SkCanvas.h"
|
#include "SkMatrix.h"
|
#include "SkRecord.h"
|
|
class SkDrawable;
|
class SkLayerInfo;
|
|
// Calculate conservative identity space bounds for each op in the record.
|
void SkRecordFillBounds(const SkRect& cullRect, const SkRecord&, SkRect bounds[]);
|
|
// SkRecordFillBounds(), and gathers information about saveLayers and stores it for later
|
// use (e.g., layer hoisting). The gathered information is sufficient to determine
|
// where each saveLayer will land and which ops in the picture it represents.
|
void SkRecordComputeLayers(const SkRect& cullRect, const SkRecord&, SkRect bounds[],
|
const SkBigPicture::SnapshotArray*, SkLayerInfo* data);
|
|
// Draw an SkRecord into an SkCanvas. A convenience wrapper around SkRecords::Draw.
|
void SkRecordDraw(const SkRecord&, SkCanvas*, SkPicture const* const drawablePicts[],
|
SkDrawable* const drawables[], int drawableCount,
|
const SkBBoxHierarchy*, SkPicture::AbortCallback*);
|
|
// Draw a portion of an SkRecord into an SkCanvas.
|
// When drawing a portion of an SkRecord the CTM on the passed in canvas must be
|
// the composition of the replay matrix with the record-time CTM (for the portion
|
// of the record that is being replayed). For setMatrix calls to behave correctly
|
// the initialCTM parameter must set to just the replay matrix.
|
void SkRecordPartialDraw(const SkRecord&, SkCanvas*,
|
SkPicture const* const drawablePicts[], int drawableCount,
|
int start, int stop, const SkMatrix& initialCTM);
|
|
namespace SkRecords {
|
|
// This is an SkRecord visitor that will draw that SkRecord to an SkCanvas.
|
class Draw : SkNoncopyable {
|
public:
|
explicit Draw(SkCanvas* canvas, SkPicture const* const drawablePicts[],
|
SkDrawable* const drawables[], int drawableCount,
|
const SkMatrix* initialCTM = nullptr)
|
: fInitialCTM(initialCTM ? *initialCTM : canvas->getTotalMatrix())
|
, fCanvas(canvas)
|
, fDrawablePicts(drawablePicts)
|
, fDrawables(drawables)
|
, fDrawableCount(drawableCount)
|
{}
|
|
// This operator calls methods on the |canvas|. The various draw() wrapper
|
// methods around SkCanvas are defined by the DRAW() macro in
|
// SkRecordDraw.cpp.
|
template <typename T> void operator()(const T& r) {
|
this->draw(r);
|
}
|
|
protected:
|
SkPicture const* const* drawablePicts() const { return fDrawablePicts; }
|
int drawableCount() const { return fDrawableCount; }
|
|
private:
|
// No base case, so we'll be compile-time checked that we implement all possibilities.
|
template <typename T> void draw(const T&);
|
|
const SkMatrix fInitialCTM;
|
SkCanvas* fCanvas;
|
SkPicture const* const* fDrawablePicts;
|
SkDrawable* const* fDrawables;
|
int fDrawableCount;
|
};
|
|
} // namespace SkRecords
|
|
#endif//SkRecordDraw_DEFINED
|
