tabs.h

/*************************************************************************/
/*  tabs.h                                                               */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* 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    */
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/* the following conditions:                                             */
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/* 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.*/
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
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/*************************************************************************/
#ifndef TABS_H
#define TABS_H

#include "scene/gui/control.h"

class Tabs : public Control {

    OBJ_TYPE( Tabs, Control );
public:

    enum TabAlign {

        ALIGN_LEFT,
        ALIGN_CENTER,
        ALIGN_RIGHT
    };

    enum CloseButtonDisplayPolicy {

        CLOSE_BUTTON_SHOW_NEVER,
        CLOSE_BUTTON_SHOW_ACTIVE_ONLY,
        CLOSE_BUTTON_SHOW_ALWAYS,
    };
private:


    struct Tab {

        String text;
        Ref<Texture> icon;
        int ofs_cache;
        int size_cache;
        int x_cache;
        int x_size_cache;

        Ref<Texture> right_button;
        Rect2 rb_rect;
        Rect2 cb_rect;

    };


    int offset;
    int max_drawn_tab;
    int hilite_arrow;
    bool buttons_visible;
    bool missing_right;
    Vector<Tab> tabs;
    int current;
    Control *_get_tab(int idx) const;
    int _get_top_margin() const;
    TabAlign tab_align;
    int rb_hover;
    bool rb_pressing;

    int cb_hover;
    bool cb_pressing;
    CloseButtonDisplayPolicy cb_displaypolicy;

    int hover;  // hovered tab

    int get_tab_width(int p_idx) const;
    void _ensure_no_over_offset();

protected:

    void _input_event(const InputEvent& p_event);
    void _notification(int p_what);
    static void _bind_methods();

public:

    void add_tab(const String& p_str="",const Ref<Texture>& p_icon=Ref<Texture>());

    void set_tab_title(int p_tab,const String& p_title);
    String get_tab_title(int p_tab) const;

    void set_tab_icon(int p_tab,const Ref<Texture>& p_icon);
    Ref<Texture> get_tab_icon(int p_tab) const;

    void set_tab_right_button(int p_tab,const Ref<Texture>& p_right_button);
    Ref<Texture> get_tab_right_button(int p_tab) const;

    void set_tab_align(TabAlign p_align);
    TabAlign get_tab_align() const;

    void set_tab_close_display_policy(CloseButtonDisplayPolicy p_policy);

    int get_tab_count() const;
    void set_current_tab(int p_current);
    int get_current_tab() const;

    void remove_tab(int p_idx);

    void clear_tabs();

    void ensure_tab_visible(int p_idx);

    Size2 get_minimum_size() const;

    Tabs();
};

VARIANT_ENUM_CAST(Tabs::TabAlign);

#endif // TABS_H