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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_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
#define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
#include <X11/Xlib.h>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/message_loop/message_loop.h"
#include "ui/events/event_handler.h"
#include "ui/gfx/x/x11_atom_cache.h"
#include "ui/gfx/x/x11_types.h"
#include "ui/views/views_export.h"
namespace aura {
class Window;
}
namespace gfx {
class Point;
}
namespace views {
class DesktopWindowTreeHost;
class NativeWidgetAura;
// An EventFilter that sets properties on X11 windows.
class VIEWS_EXPORT X11WindowEventFilter : public ui::EventHandler {
public:
explicit X11WindowEventFilter(DesktopWindowTreeHost* window_tree_host);
~X11WindowEventFilter() override;
// Overridden from ui::EventHandler:
void OnMouseEvent(ui::MouseEvent* event) override;
private:
// Called when the user clicked the caption area.
void OnClickedCaption(ui::MouseEvent* event,
int previous_click_component);
// Called when the user clicked the maximize button.
void OnClickedMaximizeButton(ui::MouseEvent* event);
void ToggleMaximizedState();
// Dispatches a _NET_WM_MOVERESIZE message to the window manager to tell it
// to act as if a border or titlebar drag occurred.
bool DispatchHostWindowDragMovement(int hittest,
const gfx::Point& screen_location);
// The display and the native X window hosting the root window.
XDisplay* xdisplay_;
::Window xwindow_;
// The native root window.
::Window x_root_window_;
ui::X11AtomCache atom_cache_;
DesktopWindowTreeHost* window_tree_host_;
// The non-client component for the target of a MouseEvent. Mouse events can
// be destructive to the window tree, which can cause the component of a
// ui::EF_IS_DOUBLE_CLICK event to no longer be the same as that of the
// initial click. Acting on a double click should only occur for matching
// components.
int click_component_;
DISALLOW_COPY_AND_ASSIGN(X11WindowEventFilter);
};
} // namespace views
#endif // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
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