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 "third_party/skia/include/core/SkCanvas.h"
   9 #include "ui/gfx/vsync_provider.h"
  10
  11 namespace cc {
  12
  13 SoftwareOutputDevice::SoftwareOutputDevice() : scale_factor_(1.f) {
  14 }
  15
  16 SoftwareOutputDevice::~SoftwareOutputDevice() {}
  17
  18 void SoftwareOutputDevice::Resize(const gfx::Size& viewport_pixel_size,
  19                                   float scale_factor) {
  20   scale_factor_ = scale_factor;
  21
  22   if (viewport_pixel_size_ == viewport_pixel_size)
  23     return;
  24
  25   SkImageInfo info = SkImageInfo::MakeN32(viewport_pixel_size.width(),
  26                                           viewport_pixel_size.height(),
  27                                           kOpaque_SkAlphaType);
  28   viewport_pixel_size_ = viewport_pixel_size;
  29   surface_ = skia::AdoptRef(SkSurface::NewRaster(info));
  30 }
  31
  32 SkCanvas* SoftwareOutputDevice::BeginPaint(const gfx::Rect& damage_rect) {
  33   damage_rect_ = damage_rect;
  34   return surface_ ? surface_->getCanvas() : nullptr;
  35 }
  36
  37 void SoftwareOutputDevice::EndPaint() {}
  38
  39 gfx::VSyncProvider* SoftwareOutputDevice::GetVSyncProvider() {
  40   return vsync_provider_.get();
  41 }
  42
  43 }  // namespace cc