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// 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.
#ifndef SERVICES_UI_WS_PLATFORM_DISPLAY_DELEGATE_H_
#define SERVICES_UI_WS_PLATFORM_DISPLAY_DELEGATE_H_
#include "services/ui/ws/ids.h"
namespace ui {
class Event;
}
namespace ui {
namespace ws {
class ServerWindow;
struct ViewportMetrics;
// PlatformDisplayDelegate is implemented by an object that manages the
// lifetime of a PlatformDisplay, forwards events to the appropriate windows,
/// and responses to changes in viewport size.
class PlatformDisplayDelegate {
public:
// Returns the root window of this display.
virtual ServerWindow* GetRootWindow() = 0;
virtual bool IsInHighContrastMode() = 0;
// Called when the window managed by the PlatformDisplay is closed.
virtual void OnDisplayClosed() = 0;
// Called when an event arrives.
virtual void OnEvent(const ui::Event& event) = 0;
// Called when the Display loses capture.
virtual void OnNativeCaptureLost() = 0;
// Signals that the metrics of this display's viewport has changed.
virtual void OnViewportMetricsChanged(const ViewportMetrics& old_metrics,
const ViewportMetrics& new_metrics) = 0;
// Called when a compositor frame is finished drawing.
virtual void OnCompositorFrameDrawn() = 0;
protected:
virtual ~PlatformDisplayDelegate() {}
};
} // namespace ws
} // namespace ui
#endif // SERVICES_UI_WS_PLATFORM_DISPLAY_DELEGATE_H_