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      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   if (factory->InitializeHardware() != ui::SurfaceFactoryOzone::INITIALIZED)
     20     LOG(FATAL) << "Failed to initialize hardware in OZONE";
     21 
     22   surface_ozone_ = factory->CreateCanvasForWidget(compositor_->widget());
     23 
     24   if (!surface_ozone_)
     25     LOG(FATAL) << "Failed to initialize canvas";
     26 
     27   vsync_provider_ = surface_ozone_->CreateVSyncProvider();
     28 }
     29 
     30 SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
     31 }
     32 
     33 void SoftwareOutputDeviceOzone::Resize(const gfx::Size& viewport_pixel_size,
     34                                        float scale_factor) {
     35   scale_factor_ = scale_factor;
     36 
     37   if (viewport_pixel_size_ == viewport_pixel_size)
     38     return;
     39 
     40   viewport_pixel_size_ = viewport_pixel_size;
     41 
     42   surface_ozone_->ResizeCanvas(viewport_pixel_size_);
     43 }
     44 
     45 SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(const gfx::Rect& damage_rect) {
     46   DCHECK(gfx::Rect(viewport_pixel_size_).Contains(damage_rect));
     47 
     48   // Get canvas for next frame.
     49   canvas_ = surface_ozone_->GetCanvas();
     50 
     51   return SoftwareOutputDevice::BeginPaint(damage_rect);
     52 }
     53 
     54 void SoftwareOutputDeviceOzone::EndPaint(cc::SoftwareFrameData* frame_data) {
     55   SoftwareOutputDevice::EndPaint(frame_data);
     56 
     57   surface_ozone_->PresentCanvas(damage_rect_);
     58 }
     59 
     60 }  // namespace content
     61