| // Copyright 2016 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 "base/lazy_instance.h" |
| #include "cc/surfaces/surface_manager.h" |
| #include "content/browser/compositor/surface_utils.h" |
| #include "content/browser/renderer_host/offscreen_canvas_surface_manager.h" |
| |
| namespace content { |
| |
| namespace { |
| base::LazyInstance<OffscreenCanvasSurfaceManager>::Leaky g_manager = |
| LAZY_INSTANCE_INITIALIZER; |
| } |
| |
| OffscreenCanvasSurfaceManager::OffscreenCanvasSurfaceManager() { |
| GetSurfaceManager()->AddObserver(this); |
| } |
| |
| OffscreenCanvasSurfaceManager::~OffscreenCanvasSurfaceManager() { |
| registered_surface_instances_.clear(); |
| GetSurfaceManager()->RemoveObserver(this); |
| } |
| |
| OffscreenCanvasSurfaceManager* OffscreenCanvasSurfaceManager::GetInstance() { |
| return g_manager.Pointer(); |
| } |
| |
| void OffscreenCanvasSurfaceManager::OnSurfaceCreated( |
| const cc::SurfaceId& surface_id, |
| const gfx::Size& frame_size, |
| float device_scale_factor) { |
| auto surface_iter = |
| registered_surface_instances_.find(surface_id.frame_sink_id()); |
| if (surface_iter == registered_surface_instances_.end()) |
| return; |
| OffscreenCanvasSurfaceImpl* surfaceImpl = surface_iter->second; |
| surfaceImpl->OnSurfaceCreated(surface_id, frame_size, device_scale_factor); |
| } |
| |
| void OffscreenCanvasSurfaceManager::RegisterOffscreenCanvasSurfaceInstance( |
| cc::FrameSinkId frame_sink_id, |
| OffscreenCanvasSurfaceImpl* surface_instance) { |
| DCHECK(surface_instance); |
| DCHECK_EQ(registered_surface_instances_.count(frame_sink_id), 0u); |
| registered_surface_instances_[frame_sink_id] = surface_instance; |
| } |
| |
| void OffscreenCanvasSurfaceManager::UnregisterOffscreenCanvasSurfaceInstance( |
| cc::FrameSinkId frame_sink_id) { |
| DCHECK_EQ(registered_surface_instances_.count(frame_sink_id), 1u); |
| registered_surface_instances_.erase(frame_sink_id); |
| } |
| |
| OffscreenCanvasSurfaceImpl* OffscreenCanvasSurfaceManager::GetSurfaceInstance( |
| cc::FrameSinkId frame_sink_id) { |
| auto search = registered_surface_instances_.find(frame_sink_id); |
| if (search != registered_surface_instances_.end()) { |
| return search->second; |
| } |
| return nullptr; |
| } |
| |
| } // namespace content |