scrollbar.h

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#ifndef __SCROLLBAR_H__
#define __SCROLLBAR_H__
 
#include "base.h"
#include "../chitralekha.h"
#include "window.h"
#include <_xeneva.h>
 
#ifdef __cplusplus
XE_EXTERN{
#endif
 
 
enum _orientation_ {
    SCROLLBAR_ORIENTATION_VERTICAL,
    SCROLLBAR_ORIENTATION_HORIZONTAL,
};
 
enum {
    SB_STATE_IDLE,
    SB_STATE_HOVER_THUMB,
    SB_STATE_DRAGGING,
    SB_STATE_HOVER_ARRDEC,
    SB_STATE_HOVER_ARRINC
};
 
typedef struct _scroll_bar_ {
    ChWidget base;
    uint8_t orientation;
    uint8_t state;
    /* Range and value */
    int minValue;
    int maxValue;
    int currentValue;
    int pageSize;
 
    // thumb
    int thumbPos;
    int thumbSize;
    int trackLen;
 
    int dragAnchor;
    int dragAnchorValue;
 
    uint8_t prevButton;
    void* attachedTo;
 
    //theming
    uint32_t color_track;
    uint32_t color_thumb;
    uint32_t color_thumb_hover;
    uint32_t color_thumb_drag;
    uint32_t color_arrow_bg;
    uint32_t color_arrow_fg;
}ChScrollBar;
 
XE_EXPORT ChScrollBar* ChCreateScrollBar(int x, int y, int width, int height, uint8_t orientation);
XE_EXPORT void ChScrollBarInit(ChScrollBar* sb, int x, int y, int width, int height, uint8_t orientation);
XE_EXPORT void ChScrollBarSetValue(ChScrollBar* sb, int value);
XE_EXPORT void ChScrollBarSetRange(ChScrollBar* sb, int min_val, int max_val, int page_size);
 
 
#ifdef __cplusplus
}
#endif
 
#endif