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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCanvas.h"
#include "SkPictureData.h"
#include "SkPictureRangePlayback.h"
void SkPictureRangePlayback::draw(SkCanvas* canvas, SkDrawPictureCallback* callback) {
AutoResetOpID aroi(this);
SkASSERT(0 == fCurOffset);
SkReader32 reader(fPictureData->opData()->bytes(), fPictureData->opData()->size());
if (0 != fStart || 0 != fStop) {
reader.setOffset(fStart);
uint32_t size;
SkDEBUGCODE(DrawType op = ) ReadOpAndSize(&reader, &size);
SkASSERT(SAVE_LAYER == op);
reader.setOffset(fStart + size);
}
// Record this, so we can concat w/ it if we encounter a setMatrix()
SkMatrix initialMatrix = canvas->getTotalMatrix();
SkAutoCanvasRestore acr(canvas, false);
while (!reader.eof()) {
if (NULL != callback && callback->abortDrawing()) {
return;
}
if (0 != fStart || 0 != fStop) {
size_t offset = reader.offset();
if (offset >= fStop) {
SkDEBUGCODE(uint32_t size;)
SkDEBUGCODE(DrawType op = ReadOpAndSize(&reader, &size);)
SkASSERT(RESTORE == op);
return;
}
}
fCurOffset = reader.offset();
uint32_t size;
DrawType op = ReadOpAndSize(&reader, &size);
if (NOOP == op) {
// NOOPs are to be ignored - do not propagate them any further
reader.setOffset(fCurOffset + size);
continue;
}
this->handleOp(&reader, op, size, canvas, initialMatrix);
}
}
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