leveledit.h

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#ifndef GUI_LEVELEDIT_H
#define GUI_LEVELEDIT_H

//#include <gui/levelbar.h>

/* Type for level_init */
#define LEVELEDIT_NOBAR  0  
#define LEVELEDIT_SINGLE 1  
#define LEVELEDIT_DOUBLE 2  
/* Fwd decl */
struct Bitmap;
struct LevelEdit;

typedef void level_set_callback(void);

typedef void display_callback(struct LevelEdit *);

typedef struct LevelEdit {
    int type;           /*<! Type of level edititing mode (see prev defines) */
    const char *title;  /*<! Title on top of screen */
    const char *unit;   /*<! Unit of quantity changed by this LevelEdit */
    int min;            /*<! Minimum level */
    int max;            /*<! Maximum level */
    int step;           /*<! Value of a single increment/decrement */

    level_set_callback *set_hook;     /*<! Callback called when a value is changed  */
    display_callback   *display_hook; /*<! Callback for complex unit display */
    int *ch1_val;                     /*<! (left) Value edited by this leveledit */
    int *ch2_val;                     /*<! Right channel edited */

    struct Bitmap   *bitmap;  /*<! Bitmap where the whole thing is rendered */
} LevelEdit;


void level_init(struct LevelEdit *lev,
        int type,
        struct Bitmap *bmp, const char *title, const char *unit,
        int min, int max, int step,
        int *ch1_val, int *ch2_val,
        level_set_callback *change_hook, display_callback *display_hook);
void level_edit(struct LevelEdit *lev);

#endif /* GUI_LEVELEDIT_H */