| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_ |
| #define FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_ |
| |
| #include <memory> |
| |
| #include "flutter/flow/skia_gpu_object.h" |
| #include "flutter/fml/macros.h" |
| #include "flutter/fml/memory/weak_ptr.h" |
| #include "flutter/lib/ui/io_manager.h" |
| #include "third_party/skia/include/gpu/GrDirectContext.h" |
| |
| namespace flutter { |
| |
| class ShellIOManager final : public IOManager { |
| public: |
| // Convenience methods for platforms to create a GrDirectContext used to |
| // supply to the IOManager. The platforms may create the context themselves if |
| // they so desire. |
| static sk_sp<GrDirectContext> CreateCompatibleResourceLoadingContext( |
| GrBackend backend, |
| sk_sp<const GrGLInterface> gl_interface); |
| |
| ShellIOManager( |
| sk_sp<GrDirectContext> resource_context, |
| std::shared_ptr<const fml::SyncSwitch> is_gpu_disabled_sync_switch, |
| fml::RefPtr<fml::TaskRunner> unref_queue_task_runner, |
| std::shared_ptr<impeller::Context> impeller_context, |
| fml::TimeDelta unref_queue_drain_delay = |
| fml::TimeDelta::FromMilliseconds(8)); |
| |
| ~ShellIOManager() override; |
| |
| // This method should be called when a resource_context first becomes |
| // available. It is safe to call multiple times, and will only update |
| // the held resource context if it has not already been set. |
| void NotifyResourceContextAvailable(sk_sp<GrDirectContext> resource_context); |
| |
| // This method should be called if you want to force the IOManager to |
| // update its resource context reference. It should not be called |
| // if there are any Dart objects that have a reference to the old |
| // resource context, but may be called if the Dart VM is restarted. |
| void UpdateResourceContext(sk_sp<GrDirectContext> resource_context); |
| |
| fml::WeakPtr<ShellIOManager> GetWeakPtr(); |
| |
| // |IOManager| |
| fml::WeakPtr<IOManager> GetWeakIOManager() const override; |
| |
| // |IOManager| |
| fml::WeakPtr<GrDirectContext> GetResourceContext() const override; |
| |
| // |IOManager| |
| fml::RefPtr<flutter::SkiaUnrefQueue> GetSkiaUnrefQueue() const override; |
| |
| // |IOManager| |
| std::shared_ptr<const fml::SyncSwitch> GetIsGpuDisabledSyncSwitch() override; |
| |
| // |IOManager| |
| std::shared_ptr<impeller::Context> GetImpellerContext() const override; |
| |
| private: |
| // Resource context management. |
| sk_sp<GrDirectContext> resource_context_; |
| std::unique_ptr<fml::WeakPtrFactory<GrDirectContext>> |
| resource_context_weak_factory_; |
| // Unref queue management. |
| fml::RefPtr<flutter::SkiaUnrefQueue> unref_queue_; |
| std::shared_ptr<const fml::SyncSwitch> is_gpu_disabled_sync_switch_; |
| std::shared_ptr<impeller::Context> impeller_context_; |
| fml::WeakPtrFactory<ShellIOManager> weak_factory_; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(ShellIOManager); |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_COMMON_SHELL_IO_MANAGER_H_ |