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/*
Copyright (C) 2002-2013 Nikolaus Gebhardt
This file is part of the "Irrlicht Engine".
For conditions of distribution and use, see copyright notice in irrlicht.h
Modified 2019.05.01 by stujones11, Stuart Jones <stujones111@gmail.com>
This is a heavily modified copy of the Irrlicht CGUIScrollBar class
which includes automatic scaling of the thumb slider and hiding of
the arrow buttons where there is insufficient space.
*/
#pragma once
#include "irrlichttypes_extrabloated.h"
using namespace irr;
using namespace gui;
class GUIScrollBar : public IGUIElement
{
public:
GUIScrollBar(IGUIEnvironment *environment, IGUIElement *parent, s32 id,
core::rect<s32> rectangle, bool horizontal, bool auto_scale);
enum ArrowVisibility
{
HIDE,
SHOW,
DEFAULT
};
virtual void draw();
virtual void updateAbsolutePosition();
virtual bool OnEvent(const SEvent &event);
s32 getMax() const { return max_pos; }
s32 getMin() const { return min_pos; }
s32 getLargeStep() const { return large_step; }
s32 getSmallStep() const { return small_step; }
s32 getPos() const;
void setMax(const s32 &max);
void setMin(const s32 &min);
void setSmallStep(const s32 &step);
void setLargeStep(const s32 &step);
void setPos(const s32 &pos);
void setPageSize(const s32 &size);
void setArrowsVisible(ArrowVisibility visible);
private:
void refreshControls();
s32 getPosFromMousePos(const core::position2di &p) const;
f32 range() const { return f32(max_pos - min_pos); }
IGUIButton *up_button;
IGUIButton *down_button;
ArrowVisibility arrow_visibility = DEFAULT;
bool is_dragging;
bool is_horizontal;
bool is_auto_scaling;
bool dragged_by_slider;
bool tray_clicked;
s32 scroll_pos;
s32 draw_center;
s32 thumb_size;
s32 min_pos;
s32 max_pos;
s32 small_step;
s32 large_step;
s32 drag_offset;
s32 page_size;
s32 border_size;
core::rect<s32> slider_rect;
video::SColor current_icon_color;
};
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