// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/gfx/ozone/surface_factory_ozone.h"

#include <stdlib.h>

#include "base/command_line.h"
#include "ui/gfx/ozone/impl/file_surface_factory_ozone.h"
#include "ui/gfx/ozone/impl/software_surface_factory_ozone.h"

namespace gfx {

// static
SurfaceFactoryOzone* SurfaceFactoryOzone::impl_ = NULL;

class SurfaceFactoryOzoneStub : public SurfaceFactoryOzone {
 public:
  SurfaceFactoryOzoneStub() {}
  virtual ~SurfaceFactoryOzoneStub() {}

  virtual HardwareState InitializeHardware() OVERRIDE { return INITIALIZED; }
  virtual void ShutdownHardware() OVERRIDE {}
  virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE { return 0; }
  virtual gfx::AcceleratedWidget RealizeAcceleratedWidget(
      gfx::AcceleratedWidget w) OVERRIDE {
    return 0;
  }
  virtual bool LoadEGLGLES2Bindings(
      AddGLLibraryCallback add_gl_library,
      SetGLGetProcAddressProcCallback set_gl_get_proc_address) OVERRIDE {
    return true;
  }
  virtual bool AttemptToResizeAcceleratedWidget(
      gfx::AcceleratedWidget w,
      const gfx::Rect& bounds) OVERRIDE {
    return false;
  }
  virtual gfx::VSyncProvider* GetVSyncProvider(
      gfx::AcceleratedWidget w) OVERRIDE {
    return NULL;
  }
};

SurfaceFactoryOzone::SurfaceFactoryOzone() {
}

SurfaceFactoryOzone::~SurfaceFactoryOzone() {
}

SurfaceFactoryOzone* SurfaceFactoryOzone::GetInstance() {
  CHECK(impl_) << "No SurfaceFactoryOzone implementation set.";
  return impl_;
}

void SurfaceFactoryOzone::SetInstance(SurfaceFactoryOzone* impl) {
  impl_ = impl;
}

const char* SurfaceFactoryOzone::DefaultDisplaySpec() {
  char* envvar = getenv("ASH_DISPLAY_SPEC");
  if (envvar)
    return envvar;
  return  "720x1280*2";
}

gfx::Screen* SurfaceFactoryOzone::CreateDesktopScreen() {
  return NULL;
}

intptr_t SurfaceFactoryOzone::GetNativeDisplay() {
  return 0;
}

bool SurfaceFactoryOzone::SchedulePageFlip(gfx::AcceleratedWidget w) {
  return true;
}

SkCanvas* SurfaceFactoryOzone::GetCanvasForWidget(gfx::AcceleratedWidget w) {
  return NULL;
}

const int32* SurfaceFactoryOzone::GetEGLSurfaceProperties(
    const int32* desired_attributes) {
  return desired_attributes;
}

// static
SurfaceFactoryOzone* SurfaceFactoryOzone::CreateTestHelper() {
  return new SurfaceFactoryOzoneStub;
}

}  // namespace gfx