src/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/SkCanvas.h"
  10 #include "ui/gfx/skia_util.h"
  11 #include "ui/gfx/vsync_provider.h"
  12
  13 namespace cc {
  14
  15 SoftwareOutputDevice::SoftwareOutputDevice() {}
  16
  17 SoftwareOutputDevice::~SoftwareOutputDevice() {}
  18
  19 void SoftwareOutputDevice::Resize(const gfx::Size& viewport_size) {
  20   if (viewport_size_ == viewport_size)
  21     return;
  22
  23   SkImageInfo info = SkImageInfo::MakeN32(
  24       viewport_size.width(), viewport_size.height(), kOpaque_SkAlphaType);
  25   viewport_size_ = viewport_size;
  26   canvas_ = skia::AdoptRef(SkCanvas::NewRaster(info));
  27 }
  28
  29 SkCanvas* SoftwareOutputDevice::BeginPaint(const gfx::Rect& damage_rect) {
  30   DCHECK(canvas_);
  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 }
  41
  42 void SoftwareOutputDevice::CopyToPixels(const gfx::Rect& rect, void* pixels) {
  43   DCHECK(canvas_);
  44   SkImageInfo info = SkImageInfo::MakeN32Premul(rect.width(), rect.height());
  45   canvas_->readPixels(info, pixels, info.minRowBytes(), rect.x(), rect.y());
  46 }
  47
  48 void SoftwareOutputDevice::Scroll(const gfx::Vector2d& delta,
  49                                   const gfx::Rect& clip_rect) {
  50   NOTIMPLEMENTED();
  51 }
  52
  53 void SoftwareOutputDevice::ReclaimSoftwareFrame(unsigned id) {
  54   NOTIMPLEMENTED();
  55 }
  56
  57 gfx::VSyncProvider* SoftwareOutputDevice::GetVSyncProvider() {
  58   return vsync_provider_.get();
  59 }
  60
  61 }  // namespace cc