src/content/browser/aura/software_output_device_ozone.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 "content/browser/aura/software_output_device_ozone.h"
   6 #include "third_party/skia/include/core/SkBitmapDevice.h"
   7 #include "third_party/skia/include/core/SkDevice.h"
   8 #include "ui/compositor/compositor.h"
   9 #include "ui/gfx/ozone/surface_factory_ozone.h"
  10 #include "ui/gfx/skia_util.h"
  11
  12 namespace content {
  13
  14 SoftwareOutputDeviceOzone::SoftwareOutputDeviceOzone(
  15     ui::Compositor* compositor) : compositor_(compositor) {
  16   if (gfx::SurfaceFactoryOzone::GetInstance()->InitializeHardware() !=
  17       gfx::SurfaceFactoryOzone::INITIALIZED)
  18     LOG(FATAL) << "Failed to initialize hardware in OZONE";
  19 }
  20
  21 SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
  22 }
  23
  24 void SoftwareOutputDeviceOzone::Resize(gfx::Size viewport_size) {
  25   if (viewport_size_ == viewport_size)
  26     return;
  27
  28   viewport_size_ = viewport_size;
  29   gfx::Rect bounds(viewport_size_);
  30
  31   gfx::SurfaceFactoryOzone* factory = gfx::SurfaceFactoryOzone::GetInstance();
  32   factory->AttemptToResizeAcceleratedWidget(compositor_->widget(),
  33                                             bounds);
  34   gfx::AcceleratedWidget realized_widget = factory->RealizeAcceleratedWidget(
  35       compositor_->widget());
  36
  37   if (realized_widget == gfx::kNullAcceleratedWidget)
  38     LOG(FATAL) << "Failed to get a realized AcceleratedWidget";
  39
  40   canvas_ = skia::SharePtr(factory->GetCanvasForWidget(realized_widget));
  41   device_ = skia::SharePtr(canvas_->getDevice());
  42 }
  43
  44 SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(gfx::Rect damage_rect) {
  45   DCHECK(gfx::Rect(viewport_size_).Contains(damage_rect));
  46
  47   canvas_->clipRect(gfx::RectToSkRect(damage_rect), SkRegion::kReplace_Op);
  48   // Save the current state so we can restore once we're done drawing. This is
  49   // saved after the clip since we want to keep the clip information after we're
  50   // done drawing such that OZONE knows what was updated.
  51   canvas_->save();
  52
  53   return SoftwareOutputDevice::BeginPaint(damage_rect);
  54 }
  55
  56 void SoftwareOutputDeviceOzone::EndPaint(cc::SoftwareFrameData* frame_data) {
  57   SoftwareOutputDevice::EndPaint(frame_data);
  58
  59   canvas_->restore();
  60
  61   if (damage_rect_.IsEmpty())
  62     return;
  63
  64   bool scheduled = gfx::SurfaceFactoryOzone::GetInstance()->SchedulePageFlip(
  65       compositor_->widget());
  66   DCHECK(scheduled) << "Failed to schedule pageflip";
  67 }
  68
  69 }  // namespace content