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/vsync_provider.h"
  11
  12 namespace cc {
  13
  14 SoftwareOutputDevice::SoftwareOutputDevice() : scale_factor_(1.f) {
  15 }
  16
  17 SoftwareOutputDevice::~SoftwareOutputDevice() {}
  18
  19 void SoftwareOutputDevice::Resize(const gfx::Size& viewport_pixel_size,
  20                                   float scale_factor) {
  21   scale_factor_ = scale_factor;
  22
  23   if (viewport_pixel_size_ == viewport_pixel_size)
  24     return;
  25
  26   SkImageInfo info = SkImageInfo::MakeN32(viewport_pixel_size.width(),
  27                                           viewport_pixel_size.height(),
  28                                           kOpaque_SkAlphaType);
  29   viewport_pixel_size_ = viewport_pixel_size;
  30   surface_ = skia::AdoptRef(SkSurface::NewRaster(info));
  31 }
  32
  33 SkCanvas* SoftwareOutputDevice::BeginPaint(const gfx::Rect& damage_rect) {
  34   damage_rect_ = damage_rect;
  35   return surface_ ? surface_->getCanvas() : nullptr;
  36 }
  37
  38 void SoftwareOutputDevice::EndPaint(SoftwareFrameData* frame_data) {
  39   DCHECK(frame_data);
  40   frame_data->id = 0;
  41   frame_data->size = viewport_pixel_size_;
  42   frame_data->damage_rect = damage_rect_;
  43 }
  44
  45 void SoftwareOutputDevice::ReclaimSoftwareFrame(unsigned id) {
  46   NOTIMPLEMENTED();
  47 }
  48
  49 gfx::VSyncProvider* SoftwareOutputDevice::GetVSyncProvider() {
  50   return vsync_provider_.get();
  51 }
  52
  53 }  // namespace cc