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      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 #include "ui/gfx/vsync_provider.h"
     12 
     13 namespace content {
     14 
     15 SoftwareOutputDeviceOzone::SoftwareOutputDeviceOzone(ui::Compositor* compositor)
     16     : compositor_(compositor), realized_widget_(gfx::kNullAcceleratedWidget) {
     17   gfx::SurfaceFactoryOzone* factory = gfx::SurfaceFactoryOzone::GetInstance();
     18 
     19   if (factory->InitializeHardware() != gfx::SurfaceFactoryOzone::INITIALIZED)
     20     LOG(FATAL) << "Failed to initialize hardware in OZONE";
     21 
     22   realized_widget_ = factory->RealizeAcceleratedWidget(compositor_->widget());
     23 
     24   if (realized_widget_ == gfx::kNullAcceleratedWidget)
     25     LOG(FATAL) << "Failed to get a realized AcceleratedWidget";
     26 
     27   vsync_provider_.reset(factory->GetVSyncProvider(realized_widget_));
     28 }
     29 
     30 SoftwareOutputDeviceOzone::~SoftwareOutputDeviceOzone() {
     31 }
     32 
     33 void SoftwareOutputDeviceOzone::Resize(gfx::Size viewport_size) {
     34   if (viewport_size_ == viewport_size)
     35     return;
     36 
     37   viewport_size_ = viewport_size;
     38   gfx::Rect bounds(viewport_size_);
     39 
     40   gfx::SurfaceFactoryOzone* factory = gfx::SurfaceFactoryOzone::GetInstance();
     41   factory->AttemptToResizeAcceleratedWidget(compositor_->widget(),
     42                                             bounds);
     43 
     44   canvas_ = skia::SharePtr(factory->GetCanvasForWidget(realized_widget_));
     45   device_ = skia::SharePtr(canvas_->getDevice());
     46 }
     47 
     48 SkCanvas* SoftwareOutputDeviceOzone::BeginPaint(gfx::Rect damage_rect) {
     49   DCHECK(gfx::Rect(viewport_size_).Contains(damage_rect));
     50 
     51   canvas_->clipRect(gfx::RectToSkRect(damage_rect), SkRegion::kReplace_Op);
     52   // Save the current state so we can restore once we're done drawing. This is
     53   // saved after the clip since we want to keep the clip information after we're
     54   // done drawing such that OZONE knows what was updated.
     55   canvas_->save();
     56 
     57   return SoftwareOutputDevice::BeginPaint(damage_rect);
     58 }
     59 
     60 void SoftwareOutputDeviceOzone::EndPaint(cc::SoftwareFrameData* frame_data) {
     61   SoftwareOutputDevice::EndPaint(frame_data);
     62 
     63   canvas_->restore();
     64 
     65   if (damage_rect_.IsEmpty())
     66     return;
     67 
     68   bool scheduled = gfx::SurfaceFactoryOzone::GetInstance()->SchedulePageFlip(
     69       compositor_->widget());
     70   DCHECK(scheduled) << "Failed to schedule pageflip";
     71 }
     72 
     73 }  // namespace content
     74