scroll_container.h

/*************************************************************************/
/*  scroll_container.h                                                   */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/
#ifndef SCROLL_CONTAINER_H
#define SCROLL_CONTAINER_H

#include "container.h"

#include "scroll_bar.h"

class ScrollContainer : public Container {

    OBJ_TYPE(ScrollContainer, Container);

    HScrollBar* h_scroll;
    VScrollBar* v_scroll;

    Size2 child_max_size;
    Size2 scroll;

    void update_scrollbars();

    Vector2 drag_speed;
    Vector2 drag_accum;
    Vector2 drag_from;
    Vector2 last_drag_accum;
    float last_drag_time;
    float time_since_motion;
    bool drag_touching;
    bool drag_touching_deaccel;
    bool click_handled;

    bool scroll_h;
    bool scroll_v;

    void _cancel_drag();

protected:
    Size2 get_minimum_size() const;


    void _input_event(const InputEvent& p_input_event);
    void _notification(int p_what);

    void _scroll_moved(float);
    static void _bind_methods();

    void _update_scrollbar_pos();
public:

    int get_v_scroll() const;
    void set_v_scroll(int p_pos);

    int get_h_scroll() const;
    void set_h_scroll(int p_pos);

    void set_enable_h_scroll(bool p_enable);
    bool is_h_scroll_enabled() const;

    void set_enable_v_scroll(bool p_enable);
    bool is_v_scroll_enabled() const;

    virtual bool clips_input() const;
    ScrollContainer();
};

#endif