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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_HOST_DESKTOP_DISPLAY_INFO_LOADER_H_
#define REMOTING_HOST_DESKTOP_DISPLAY_INFO_LOADER_H_
#include <memory>
#include "remoting/host/desktop_display_info.h"
namespace remoting {
// Interface for retrieving the current display info from the OS. All methods
// should be called on the UI thread, though the instance may be constructed on
// another thread.
class DesktopDisplayInfoLoader {
public:
// Can be called on any thread.
static std::unique_ptr<DesktopDisplayInfoLoader> Create();
DesktopDisplayInfoLoader(const DesktopDisplayInfoLoader&) = delete;
DesktopDisplayInfoLoader& operator=(const DesktopDisplayInfoLoader&) = delete;
// Object should be destroyed on the UI thread.
virtual ~DesktopDisplayInfoLoader() = default;
// Optional initialization performed on the UI thread.
virtual void Init() {}
// Returns the current display info. Implementations may retrieve this
// directly from the OS each time, or may return information from an
// internal cache and update this cache in response to an OS-level
// "displays-changed" notification.
virtual DesktopDisplayInfo GetCurrentDisplayInfo() = 0;
protected:
DesktopDisplayInfoLoader() = default;
};
} // namespace remoting
#endif // REMOTING_HOST_DESKTOP_DISPLAY_INFO_LOADER_H_
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