ui/ozone/demo/software_renderer.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 "ui/ozone/demo/software_renderer.h"
   6
   7 #include "third_party/skia/include/core/SkCanvas.h"
   8 #include "third_party/skia/include/core/SkSurface.h"
   9 #include "ui/ozone/public/surface_factory_ozone.h"
  10 #include "ui/ozone/public/surface_ozone_canvas.h"
  11
  12 namespace ui {
  13
  14 SoftwareRenderer::SoftwareRenderer(gfx::AcceleratedWidget widget,
  15                                    const gfx::Size& size)
  16     : RendererBase(widget, size) {
  17 }
  18
  19 SoftwareRenderer::~SoftwareRenderer() {
  20 }
  21
  22 bool SoftwareRenderer::Initialize() {
  23   software_surface_ =
  24       ui::SurfaceFactoryOzone::GetInstance()->CreateCanvasForWidget(widget_);
  25   if (!software_surface_) {
  26     LOG(ERROR) << "Failed to create software surface";
  27     return false;
  28   }
  29
  30   software_surface_->ResizeCanvas(size_);
  31   return true;
  32 }
  33
  34 void SoftwareRenderer::RenderFrame() {
  35   float fraction = NextFraction();
  36
  37   skia::RefPtr<SkSurface> surface = software_surface_->GetSurface();
  38
  39   SkColor color =
  40       SkColorSetARGB(0xff, 0, 0xff * fraction, 0xff * (1 - fraction));
  41
  42   surface->getCanvas()->clear(color);
  43
  44   software_surface_->PresentCanvas(gfx::Rect(size_));
  45 }
  46
  47 }  // namespace ui