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 #include "ui/gfx/vsync_provider.h"
  13
  14 namespace cc {
  15
  16 SoftwareOutputDevice::SoftwareOutputDevice() {}
  17
  18 SoftwareOutputDevice::~SoftwareOutputDevice() {}
  19
  20 void SoftwareOutputDevice::Resize(const gfx::Size& viewport_size) {
  21   if (viewport_size_ == viewport_size)
  22     return;
  23
  24   viewport_size_ = viewport_size;
  25   device_ = skia::AdoptRef(new SkBitmapDevice(SkBitmap::kARGB_8888_Config,
  26       viewport_size.width(), viewport_size.height(), true));
  27   canvas_ = skia::AdoptRef(new SkCanvas(device_.get()));
  28 }
  29
  30 SkCanvas* SoftwareOutputDevice::BeginPaint(const gfx::Rect& damage_rect) {
  31   DCHECK(device_);
  32   damage_rect_ = damage_rect;
  33   return canvas_.get();
  34 }
  35
  36 void SoftwareOutputDevice::EndPaint(SoftwareFrameData* frame_data) {
  37   DCHECK(frame_data);
  38   frame_data->id = 0;
  39   frame_data->size = viewport_size_;
  40   frame_data->damage_rect = damage_rect_;
  41   frame_data->handle = base::SharedMemory::NULLHandle();
  42 }
  43
  44 void SoftwareOutputDevice::CopyToBitmap(
  45     const gfx::Rect& rect, SkBitmap* output) {
  46   DCHECK(device_);
  47   const SkBitmap& bitmap = device_->accessBitmap(false);
  48   bitmap.extractSubset(output, gfx::RectToSkIRect(rect));
  49 }
  50
  51 void SoftwareOutputDevice::Scroll(const gfx::Vector2d& delta,
  52                                   const gfx::Rect& clip_rect) {
  53   NOTIMPLEMENTED();
  54 }
  55
  56 void SoftwareOutputDevice::ReclaimSoftwareFrame(unsigned id) {
  57   NOTIMPLEMENTED();
  58 }
  59
  60 gfx::VSyncProvider* SoftwareOutputDevice::GetVSyncProvider() {
  61   return vsync_provider_.get();
  62 }
  63
  64 }  // namespace cc