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// Copyright (c) 2012 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 UI_AURA_ROOT_WINDOW_HOST_H_
#define UI_AURA_ROOT_WINDOW_HOST_H_
#include <vector>
#include "base/message_loop.h"
#include "ui/aura/aura_export.h"
#include "ui/base/cursor/cursor.h"
#include "ui/gfx/native_widget_types.h"
class SkCanvas;
namespace gfx {
class Insets;
class Point;
class Rect;
class Size;
}
namespace aura {
class RootWindow;
class RootWindowHostDelegate;
// RootWindowHost bridges between a native window and the embedded RootWindow.
// It provides the accelerated widget and maps events from the native os to
// aura.
class AURA_EXPORT RootWindowHost {
public:
virtual ~RootWindowHost() {}
// Creates a new RootWindowHost. The caller owns the returned value.
static RootWindowHost* Create(const gfx::Rect& bounds);
// Returns the actual size of the screen.
// (gfx::Screen only reports on the virtual desktop exposed by Aura.)
static gfx::Size GetNativeScreenSize();
// Sets the delegate, which is normally done by the root window.
virtual void SetDelegate(RootWindowHostDelegate* delegate) = 0;
virtual RootWindow* GetRootWindow() = 0;
// Returns the accelerated widget.
virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
// Shows the RootWindowHost.
virtual void Show() = 0;
// Hides the RootWindowHost.
virtual void Hide() = 0;
// Toggles the host's full screen state.
virtual void ToggleFullScreen() = 0;
// Gets/Sets the size of the RootWindowHost.
virtual gfx::Rect GetBounds() const = 0;
virtual void SetBounds(const gfx::Rect& bounds) = 0;
// Sets/Gets the insets that specifies the effective root window area
// in the host window.
virtual gfx::Insets GetInsets() const = 0;
virtual void SetInsets(const gfx::Insets& insets) = 0;
// Returns the location of the RootWindow on native screen.
virtual gfx::Point GetLocationOnNativeScreen() const = 0;
// Sets the OS capture to the root window.
virtual void SetCapture() = 0;
// Releases OS capture of the root window.
virtual void ReleaseCapture() = 0;
// Sets the currently displayed cursor.
virtual void SetCursor(gfx::NativeCursor cursor) = 0;
// Queries the mouse's current position relative to the host window and sets
// it in |location_return|. Returns true if the cursor is within the host
// window. The position set to |location_return| is constrained within the
// host window. If the cursor is disabled, returns false and (0, 0) is set to
// |location_return|.
// This method is expensive, instead use gfx::Screen::GetCursorScreenPoint().
virtual bool QueryMouseLocation(gfx::Point* location_return) = 0;
// Clips the cursor to the bounds of the root window until UnConfineCursor().
virtual bool ConfineCursorToRootWindow() = 0;
virtual void UnConfineCursor() = 0;
// Called when the cursor visibility has changed.
virtual void OnCursorVisibilityChanged(bool show) = 0;
// Moves the cursor to the specified location relative to the root window.
virtual void MoveCursorTo(const gfx::Point& location) = 0;
// Sets if the window should be focused when shown.
virtual void SetFocusWhenShown(bool focus_when_shown) = 0;
// Copies |source_bounds| from the root window (as displayed on the host
// machine) to |canvas| at offset |dest_offset|. The bounds need to be in
// physical pixels.
virtual bool CopyAreaToSkCanvas(const gfx::Rect& source_bounds,
const gfx::Point& dest_offset,
SkCanvas* canvas) = 0;
// Posts |native_event| to the platform's event queue.
#if !defined(OS_MACOSX)
virtual void PostNativeEvent(const base::NativeEvent& native_event) = 0;
#endif
// Called when the device scale factor of the root window has chagned.
virtual void OnDeviceScaleFactorChanged(float device_scale_factor) = 0;
// Stop listening events in preparation for shutdown.
virtual void PrepareForShutdown() = 0;
};
} // namespace aura
#endif // UI_AURA_ROOT_WINDOW_HOST_H_
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