| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/platform/graphics/replaying_canvas.h" |
| |
| namespace blink { |
| |
| CanvasInterceptor<ReplayingCanvas>::~CanvasInterceptor() { |
| if (TopLevelCall()) |
| Canvas()->UpdateInRange(); |
| } |
| |
| ReplayingCanvas::ReplayingCanvas(SkBitmap bitmap, |
| unsigned from_step, |
| unsigned to_step) |
| : InterceptingCanvas(bitmap), |
| from_step_(from_step), |
| to_step_(to_step), |
| abort_drawing_(false) {} |
| |
| void ReplayingCanvas::UpdateInRange() { |
| if (abort_drawing_) |
| return; |
| unsigned step = CallCount() + 1; |
| if (to_step_ && step > to_step_) |
| abort_drawing_ = true; |
| if (step == from_step_) |
| this->SkCanvas::clear(SK_ColorTRANSPARENT); |
| } |
| |
| bool ReplayingCanvas::abort() { |
| return abort_drawing_; |
| } |
| |
| SkCanvas::SaveLayerStrategy ReplayingCanvas::getSaveLayerStrategy( |
| const SaveLayerRec& rec) { |
| // We're about to create a layer and we have not cleared the device yet. |
| // Let's clear now, so it has effect on all layers. |
| if (CallCount() <= from_step_) |
| this->SkCanvas::clear(SK_ColorTRANSPARENT); |
| |
| return this->InterceptingCanvas<ReplayingCanvas>::getSaveLayerStrategy(rec); |
| } |
| |
| void ReplayingCanvas::onDrawPicture(const SkPicture* picture, |
| const SkMatrix* matrix, |
| const SkPaint* paint) { |
| this->UnrollDrawPicture(picture, matrix, paint, this); |
| } |
| |
| } // namespace blink |