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// Copyright 2013 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 ASH_WM_CAPTION_BUTTONS_ALTERNATE_FRAME_SIZE_BUTTON_H_
#define ASH_WM_CAPTION_BUTTONS_ALTERNATE_FRAME_SIZE_BUTTON_H_
#include "ash/ash_export.h"
#include "ash/wm/caption_buttons/alternate_frame_size_button_delegate.h"
#include "ash/wm/caption_buttons/frame_caption_button.h"
#include "ash/wm/workspace/snap_types.h"
#include "base/timer/timer.h"
namespace views {
class Widget;
}
namespace ash {
class AlternateFrameSizeButtonDelegate;
// The maximize/restore button when using the alternate button style.
// When the mouse is pressed over the size button or the size button is touched:
// - The minimize and close buttons are set to snap left and snap right
// respectively.
// - The pressed button is updated during the drag to reflect the button
// underneath the mouse cursor. (The size button is potentially unpressed).
// When the drag terminates, the action for the pressed button is executed.
// For the sake of simplicity, the size button is the event handler for a click
// starting on the size button and the entire drag (including when the size
// button is unpressed).
class ASH_EXPORT AlternateFrameSizeButton : public FrameCaptionButton {
public:
AlternateFrameSizeButton(views::ButtonListener* listener,
views::Widget* frame,
AlternateFrameSizeButtonDelegate* delegate);
virtual ~AlternateFrameSizeButton();
// views::CustomButton overrides:
virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
virtual void OnMouseCaptureLost() OVERRIDE;
virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
void set_delay_to_set_buttons_to_snap_mode(int delay_ms) {
set_buttons_to_snap_mode_delay_ms_ = delay_ms;
}
private:
// Starts |set_buttons_to_snap_mode_timer_|.
void StartSetButtonsToSnapModeTimer(const ui::LocatedEvent& event);
// Sets the buttons adjacent to the size button to snap left and right.
void SetButtonsToSnapMode();
// Updates the pressed button based on |event_location|.
void UpdatePressedButton(const ui::LocatedEvent& event);
// Snaps |frame_| according to |snap_type_|. Returns true if |frame_| was
// snapped.
bool CommitSnap(const ui::LocatedEvent& event);
// Sets the buttons adjacent to the size button to minimize and close again.
// Clears any state set while snapping was enabled. |animate| indicates
// whether the buttons should animate back to their original icons.
void SetButtonsToNormalMode(
AlternateFrameSizeButtonDelegate::Animate animate);
// Widget that the size button acts on.
views::Widget* frame_;
// Not owned.
AlternateFrameSizeButtonDelegate* delegate_;
// Location of the event which started |set_buttons_to_snap_mode_timer_| in
// view coordinates.
gfx::Point set_buttons_to_snap_mode_timer_event_location_;
// The delay between the user pressing the size button and the buttons
// adjacent to the size button morphing into buttons for snapping left and
// right.
int set_buttons_to_snap_mode_delay_ms_;
base::OneShotTimer<AlternateFrameSizeButton> set_buttons_to_snap_mode_timer_;
// Whether the buttons adjacent to the size button snap the window left and
// right.
bool in_snap_mode_;
// The action of the currently pressed button. If |snap_type_| == SNAP_NONE,
// the size button's default action is run when clicked.
SnapType snap_type_;
DISALLOW_COPY_AND_ASSIGN(AlternateFrameSizeButton);
};
} // namespace ash
#endif // ASH_WM_CAPTION_BUTTONS_ALTERNATE_FRAME_SIZE_BUTTON_H_
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