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/ozone_platform.h"
  11 #include "ui/ozone/public/surface_factory_ozone.h"
  12 #include "ui/ozone/public/surface_ozone_canvas.h"
  13
  14 namespace content {
  15
  16 SoftwareOutputDeviceOzone::SoftwareOutputDeviceOzone(ui::Compositor* compositor)
  17     : compositor_(compositor) {
  18   ui::SurfaceFactoryOzone* factory =
  19       ui::OzonePlatform::GetInstance()->GetSurfaceFactoryOzone();
  20
  21   surface_ozone_ = factory->CreateCanvasForWidget(compositor_->widget());
  22
  23   if (!surface_ozone_)
  24     LOG(FATAL) << "Failed to initialize canvas";
  25
  26   vsync_provider_ = surface_ozone_->CreateVSyncProvider();
  27 }
  28
  29 SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
  30 }
  31
  32 void SoftwareOutputDeviceOzone::Resize(const gfx::Size& viewport_pixel_size,
  33                                        float scale_factor) {
  34   scale_factor_ = scale_factor;
  35
  36   if (viewport_pixel_size_ == viewport_pixel_size)
  37     return;
  38
  39   viewport_pixel_size_ = viewport_pixel_size;
  40
  41   surface_ozone_->ResizeCanvas(viewport_pixel_size_);
  42 }
  43
  44 SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(const gfx::Rect& damage_rect) {
  45   DCHECK(gfx::Rect(viewport_pixel_size_).Contains(damage_rect));
  46
  47   // Get canvas for next frame.
  48   surface_ = surface_ozone_->GetSurface();
  49
  50   return SoftwareOutputDevice::BeginPaint(damage_rect);
  51 }
  52
  53 void SoftwareOutputDeviceOzone::EndPaint() {
  54   SoftwareOutputDevice::EndPaint();
  55
  56   surface_ozone_->PresentCanvas(damage_rect_);
  57 }
  58
  59 }  // namespace content