cc/output/software_output_device.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/output/software_output_device.h"
   6
   7 #include "base/logging.h"
   8 #include "cc/output/software_frame_data.h"
   9 #include "third_party/skia/include/core/SkBitmapDevice.h"
  10 #include "third_party/skia/include/core/SkCanvas.h"
  11 #include "ui/gfx/skia_util.h"
  12
  13 namespace cc {
  14
  15 SoftwareOutputDevice::SoftwareOutputDevice() {}
  16
  17 SoftwareOutputDevice::~SoftwareOutputDevice() {}
  18
  19 void SoftwareOutputDevice::Resize(gfx::Size viewport_size) {
  20   if (viewport_size_ == viewport_size)
  21     return;
  22
  23   viewport_size_ = viewport_size;
  24   device_ = skia::AdoptRef(new SkBitmapDevice(SkBitmap::kARGB_8888_Config,
  25       viewport_size.width(), viewport_size.height(), true));
  26   canvas_ = skia::AdoptRef(new SkCanvas(device_.get()));
  27 }
  28
  29 SkCanvas* SoftwareOutputDevice::BeginPaint(gfx::Rect damage_rect) {
  30   DCHECK(device_);
  31   damage_rect_ = damage_rect;
  32   return canvas_.get();
  33 }
  34
  35 void SoftwareOutputDevice::EndPaint(SoftwareFrameData* frame_data) {
  36   DCHECK(frame_data);
  37   frame_data->id = 0;
  38   frame_data->size = viewport_size_;
  39   frame_data->damage_rect = damage_rect_;
  40   frame_data->handle = base::SharedMemory::NULLHandle();
  41 }
  42
  43 void SoftwareOutputDevice::CopyToBitmap(
  44     gfx::Rect rect, SkBitmap* output) {
  45   DCHECK(device_);
  46   const SkBitmap& bitmap = device_->accessBitmap(false);
  47   bitmap.extractSubset(output, gfx::RectToSkIRect(rect));
  48 }
  49
  50 void SoftwareOutputDevice::Scroll(
  51     gfx::Vector2d delta, gfx::Rect clip_rect) {
  52   NOTIMPLEMENTED();
  53 }
  54
  55 void SoftwareOutputDevice::ReclaimSoftwareFrame(unsigned id) {
  56   NOTIMPLEMENTED();
  57 }
  58
  59 }  // namespace cc