ui/ozone/platform/test/file_surface_factory.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 "ui/ozone/platform/test/file_surface_factory.h"
   6
   7 #include "base/bind.h"
   8 #include "base/file_util.h"
   9 #include "base/location.h"
  10 #include "base/stl_util.h"
  11 #include "base/threading/worker_pool.h"
  12 #include "third_party/skia/include/core/SkCanvas.h"
  13 #include "third_party/skia/include/core/SkSurface.h"
  14 #include "ui/gfx/codec/png_codec.h"
  15 #include "ui/gfx/skia_util.h"
  16 #include "ui/gfx/vsync_provider.h"
  17 #include "ui/ozone/public/surface_ozone_canvas.h"
  18
  19 namespace ui {
  20
  21 namespace {
  22
  23 void WriteDataToFile(const base::FilePath& location, const SkBitmap& bitmap) {
  24   std::vector<unsigned char> png_data;
  25   gfx::PNGCodec::FastEncodeBGRASkBitmap(bitmap, true, &png_data);
  26   base::WriteFile(location,
  27                   reinterpret_cast<const char*>(vector_as_array(&png_data)),
  28                   png_data.size());
  29 }
  30
  31 class FileSurface : public SurfaceOzoneCanvas {
  32  public:
  33   FileSurface(const base::FilePath& location) : location_(location) {}
  34   virtual ~FileSurface() {}
  35
  36   // SurfaceOzoneCanvas overrides:
  37   virtual void ResizeCanvas(const gfx::Size& viewport_size) OVERRIDE {
  38     surface_ = skia::AdoptRef(SkSurface::NewRaster(SkImageInfo::MakeN32Premul(
  39         viewport_size.width(), viewport_size.height())));
  40   }
  41   virtual skia::RefPtr<SkCanvas> GetCanvas() OVERRIDE {
  42     return skia::SharePtr(surface_->getCanvas());
  43   }
  44   virtual void PresentCanvas(const gfx::Rect& damage) OVERRIDE {
  45     SkBitmap bitmap;
  46     bitmap.setInfo(surface_->getCanvas()->imageInfo());
  47
  48     // TODO(dnicoara) Use SkImage instead to potentially avoid a copy.
  49     // See crbug.com/361605 for details.
  50     if (surface_->getCanvas()->readPixels(&bitmap, 0, 0)) {
  51       base::WorkerPool::PostTask(
  52           FROM_HERE, base::Bind(&WriteDataToFile, location_, bitmap), true);
  53     }
  54   }
  55   virtual scoped_ptr<gfx::VSyncProvider> CreateVSyncProvider() OVERRIDE {
  56     return scoped_ptr<gfx::VSyncProvider>();
  57   }
  58
  59  private:
  60   base::FilePath location_;
  61   skia::RefPtr<SkSurface> surface_;
  62 };
  63
  64 }  // namespace
  65
  66 FileSurfaceFactory::FileSurfaceFactory(const base::FilePath& dump_location)
  67     : location_(dump_location) {
  68   CHECK(!base::DirectoryExists(location_)) << "Location cannot be a directory ("
  69                                            << location_.value() << ")";
  70   CHECK(!base::PathExists(location_) || base::PathIsWritable(location_));
  71 }
  72
  73 FileSurfaceFactory::~FileSurfaceFactory() {
  74 }
  75
  76 SurfaceFactoryOzone::HardwareState FileSurfaceFactory::InitializeHardware() {
  77   return INITIALIZED;
  78 }
  79
  80 void FileSurfaceFactory::ShutdownHardware() {
  81 }
  82
  83 gfx::AcceleratedWidget FileSurfaceFactory::GetAcceleratedWidget() {
  84   return 1;
  85 }
  86
  87 scoped_ptr<SurfaceOzoneCanvas> FileSurfaceFactory::CreateCanvasForWidget(
  88     gfx::AcceleratedWidget w) {
  89   return make_scoped_ptr<SurfaceOzoneCanvas>(new FileSurface(location_));
  90 }
  91
  92 bool FileSurfaceFactory::LoadEGLGLES2Bindings(
  93     AddGLLibraryCallback add_gl_library,
  94     SetGLGetProcAddressProcCallback set_gl_get_proc_address) {
  95   return false;
  96 }
  97
  98 }  // namespace ui