content/browser/compositor/software_output_device_ozone.cc

   1 // Copyright 2014 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 "content/browser/compositor/software_output_device_ozone.h"
   6 #include "third_party/skia/include/core/SkDevice.h"
   7 #include "ui/compositor/compositor.h"
   8 #include "ui/gfx/skia_util.h"
   9 #include "ui/gfx/vsync_provider.h"
  10 #include "ui/ozone/public/surface_factory_ozone.h"
  11 #include "ui/ozone/public/surface_ozone_canvas.h"
  12
  13 namespace content {
  14
  15 SoftwareOutputDeviceOzone::SoftwareOutputDeviceOzone(ui::Compositor* compositor)
  16     : compositor_(compositor) {
  17   ui::SurfaceFactoryOzone* factory = ui::SurfaceFactoryOzone::GetInstance();
  18
  19   surface_ozone_ = factory->CreateCanvasForWidget(compositor_->widget());
  20
  21   if (!surface_ozone_)
  22     LOG(FATAL) << "Failed to initialize canvas";
  23
  24   vsync_provider_ = surface_ozone_->CreateVSyncProvider();
  25 }
  26
  27 SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
  28 }
  29
  30 void SoftwareOutputDeviceOzone::Resize(const gfx::Size& viewport_pixel_size,
  31                                        float scale_factor) {
  32   scale_factor_ = scale_factor;
  33
  34   if (viewport_pixel_size_ == viewport_pixel_size)
  35     return;
  36
  37   viewport_pixel_size_ = viewport_pixel_size;
  38
  39   surface_ozone_->ResizeCanvas(viewport_pixel_size_);
  40 }
  41
  42 SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(const gfx::Rect& damage_rect) {
  43   DCHECK(gfx::Rect(viewport_pixel_size_).Contains(damage_rect));
  44
  45   // Get canvas for next frame.
  46   canvas_ = surface_ozone_->GetCanvas();
  47
  48   return SoftwareOutputDevice::BeginPaint(damage_rect);
  49 }
  50
  51 void SoftwareOutputDeviceOzone::EndPaint(cc::SoftwareFrameData* frame_data) {
  52   SoftwareOutputDevice::EndPaint(frame_data);
  53
  54   surface_ozone_->PresentCanvas(damage_rect_);
  55 }
  56
  57 }  // namespace content