/* color.c
 *
 * by Revin Guillen
 *
 * Implements a simple RGB color builder
 *
 * Allegro GUI Clinic Example
 * http://students.washington.edu/revin/gui/
 */

#include <allegro.h>

int update_color(void *dp3, int d2);


DIALOG color_builder[] =
{
   /* (dialog proc)     (x)   (y)   (w)   (h)   (fg)  (bg)  (key) (flags)  (d1)  (d2)  (dp)  (dp2)         (dp3) */
   { d_clear_proc,      0,    0,    0,    0,    255,  0,    0,    0,       0,    0,    NULL },
   { d_box_proc,        0,    0,  100,  100,    0,  254,    0,    0,       0,    0,    NULL },
   { d_slider_proc,    10,  110,   16,   64,    1,    0,    0,    0,       63,   0,    NULL, update_color, NULL },
   { d_slider_proc,    42,  110,   16,   64,    2,    0,    0,    0,       63,   0,    NULL, update_color, NULL },
   { d_slider_proc,    74,  110,   16,   64,    4,    0,    0,    0,       63,   0,    NULL, update_color, NULL },
   { NULL,              0,    0,    0,    0,    0,    0,    0,    0,       0,    0,    NULL }
};


/* slider ID's within the dialog */
#define S_RED    2
#define S_GREEN  3
#define S_BLUE   4


/* callback for the sliders (the parameters are
 * ignored, since we already know what controls
 * to look at for data)
 */
int update_color(void *dp3, int d2)
{
   RGB col;

   col.r = color_builder[S_RED].d2;
   col.g = color_builder[S_GREEN].d2;
   col.b = color_builder[S_BLUE].d2;

   vsync();

   set_color(254, &col);

   return 0;
}


int main()
{
   /* initialize */
   allegro_init();
   install_keyboard(); 
   install_mouse();
   install_timer();
   set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0);
   set_palette(desktop_palette);

   /* initialize the color box */
   update_color(NULL, 0);

   /* run the dialog */
   do_dialog(color_builder, -1);

   return 0;
}