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// Copyright 2017 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_KEYBOARD_DRAG_DESCRIPTOR_H_
#define UI_KEYBOARD_DRAG_DESCRIPTOR_H_
#include "ui/events/event.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/vector2d.h"
namespace keyboard {
// Tracks the state of a mouse drag to move the keyboard. The DragDescriptor
// does not actually change while the user drags. It essentially just records
// the offset of the original click on the keyboard along with the original
// location of the keyboard and uses incoming mouse move events to determine
// where the keyboard should be placed using those offsets.
class DragDescriptor {
public:
DragDescriptor(const gfx::Point& keyboard_location,
const gfx::Vector2d& click_offset,
bool is_touch_drag,
ui::PointerId pointer_id);
gfx::Point original_keyboard_location() const {
return original_keyboard_location_;
}
gfx::Vector2d original_click_offset() const { return original_click_offset_; }
bool is_touch_drag() { return is_touch_drag_; }
ui::PointerId pointer_id() { return pointer_id_; }
private:
const gfx::Point original_keyboard_location_;
const gfx::Vector2d original_click_offset_;
// Distinguish whether the current drag is from a touch event or mouse event,
// so drag/move events can be filtered accordingly
const bool is_touch_drag_;
// The pointer ID provided by the touch event to disambiguate multiple
// touch points. If this is a mouse event, then this value is -1.
const ui::PointerId pointer_id_;
};
} // namespace keyboard
#endif // UI_KEYBOARD_DRAG_DESCRIPTOR_H_
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