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#ifndef __CONTROLS_H
#define __CONTROLS_H
#include <SDL.h>
#include "osc.h"
struct Paint {
enum Paint_Type {
PAINT_PLAIN = 0,
PAINT_GRAD
} type;
union {
struct Paint_Plain {
Uint32 color;
} plain;
struct Paint_Grad {
SDL_Color top;
SDL_Color bottom;
} grad;
} u;
};
struct Control {
enum Control_Type {
SLIDER = 0,
FIELD
} type;
SDL_Rect geo;
struct Control_OSC {
char *address;
enum Osc_DataType datatype;
} OSC;
union {
struct Slider {
enum Slider_Type {
SLIDER_BUTTON = 0,
SLIDER_SET,
SLIDER_RELATIVE
} type;
#define SLIDER_TYPE \
"button\0" \
"set\0" \
"relative\0"
struct Paint paint;
double min;
double max;
double step;
double value;
char *label;
Uint8 show_value;
union {
struct Slider_Button {
Uint16 button_y;
} button;
} u;
} slider;
struct Field {
enum Field_Type {
FIELD_BUTTON = 0,
FIELD_SWITCH
} type;
Uint32 color;
Uint8 value;
char *label;
} field;
} u;
};
/* slider inner padding is 1/2000 of its area */
#define SLIDER_PADDING(C) ((C)->geo.w*(C)->geo.h/2000)
static inline void Controls_SetSliderValue(struct Slider *slider, double value);
static inline void Controls_InitSliderButton(struct Control *c);
int Controls_Slider(SDL_Surface *s, struct Control *c);
int Controls_Field(SDL_Surface *s, struct Control *c);
int Controls_Draw(SDL_Surface *s, struct Control *c);
static inline void
Controls_SetSliderValue(struct Slider *slider, double value)
{
slider->value = slider->step ?
(Uint32)((value - slider->min)/slider->step+.5)*
slider->step + slider->min : value;
}
static inline void
Controls_InitSliderButton(struct Control *c)
{
struct Slider *slider = &c->u.slider;
Uint16 padding = SLIDER_PADDING(c);
slider->u.button.button_y = c->geo.y + (c->geo.h - (padding << 1))*
(1. - (slider->value - slider->min)/
(slider->max - slider->min)) - padding;
}
#endif
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