Mandoline: Merge Surfaces and Views apps

components/view_manager/native_viewport/onscreen_context_provider.cc

-// Copyright 2015 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 "components/view_manager/native_viewport/onscreen_context_provider.h"
-
-#include "base/bind.h"
-#include "components/view_manager/gles2/command_buffer_driver.h"
-#include "components/view_manager/gles2/command_buffer_impl.h"
-#include "components/view_manager/gles2/gpu_state.h"
-
-namespace native_viewport {
-
-OnscreenContextProvider::OnscreenContextProvider(
-    const scoped_refptr<gles2::GpuState>& state)
-    : command_buffer_impl_(nullptr),
-      state_(state),
-      widget_(gfx::kNullAcceleratedWidget),
-      binding_(this) {
-}
-
-OnscreenContextProvider::~OnscreenContextProvider() {
-  if (command_buffer_impl_)
-    command_buffer_impl_->set_observer(nullptr);
-  for (const auto& driver : command_buffers_)
-    driver->DestroyWindow();
-}
-
-void OnscreenContextProvider::Bind(
-    mojo::InterfaceRequest<mojo::ContextProvider> request) {
-  binding_.Bind(request.Pass());
-}
-
-void OnscreenContextProvider::SetAcceleratedWidget(
-    gfx::AcceleratedWidget widget) {
-  widget_ = widget;
-
-  if (widget_ == gfx::kNullAcceleratedWidget) {
-    if (command_buffer_impl_)
-      command_buffer_impl_->DidLoseContext();
-    return;
-  }
-  if (pending_create_callback_.is_null())
-    return;
-
-  CreateAndReturnCommandBuffer();
-}
-
-void OnscreenContextProvider::Create(
-    mojo::ViewportParameterListenerPtr viewport_parameter_listener,
-    const CreateCallback& callback) {
-  if (!pending_create_callback_.is_null()) {
-    DCHECK(!command_buffer_impl_);
-    pending_create_callback_.Run(nullptr);
-  }
-  pending_listener_ = viewport_parameter_listener.Pass();
-  pending_create_callback_ = callback;
-
-  if (widget_ != gfx::kNullAcceleratedWidget)
-    CreateAndReturnCommandBuffer();
-}
-
-void OnscreenContextProvider::OnCommandBufferImplDestroyed() {
-  DCHECK(command_buffer_impl_);
-  command_buffer_impl_ = nullptr;
-}
-
-void OnscreenContextProvider::CreateAndReturnCommandBuffer() {
-  mojo::CommandBufferPtr cb;
-  scoped_ptr<gles2::CommandBufferDriver> command_buffer_driver(
-      new gles2::CommandBufferDriver(
-          widget_, state_,
-          base::Bind(&OnscreenContextProvider::CommandBufferDestroyed,
-                     base::Unretained(this))));
-  command_buffers_.insert(command_buffer_driver.get());
-
-  if (!command_buffer_impl_) {
-    command_buffer_impl_ =
-        new gles2::CommandBufferImpl(GetProxy(&cb), pending_listener_.Pass(),
-                                     state_, command_buffer_driver.Pass());
-    command_buffer_impl_->set_observer(this);
-  }
-  pending_create_callback_.Run(cb.Pass());
-  pending_create_callback_.reset();
-}
-
-void OnscreenContextProvider::CommandBufferDestroyed(
-    gles2::CommandBufferDriver* command_buffer) {
-  command_buffers_.erase(command_buffer);
-}
-
-}  // namespace mojo