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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <SDL.h>
#include "graphics.h"
#include "controls.h"
#include "controller.h"
int
Controls_Slider(SDL_Surface *s, struct Control *c)
{
struct Slider *slider = &c->u.slider;
struct Paint *paint = &slider->paint;
Uint32 border_color;
Uint16 padding = SLIDER_PADDING(c);
SDL_Rect bar;
if (Graphics_BlankRect(s, &c->geo))
return 1;
bar.x = c->geo.x + padding;
bar.w = c->geo.w - (padding << 1);
if (slider->step) { /* stepwise */
float cr, cg, cb;
float diff_r, diff_g, diff_b;
Uint32 color;
Uint16 steps = (slider->max - slider->min)/slider->step;
float box_s = (float)(c->geo.h - padding)/steps;
float fy = c->geo.y + c->geo.h - box_s;
bar.h = box_s - padding;
switch (paint->type) {
case PAINT_PLAIN:
color = border_color = paint->u.plain.color;
break;
case PAINT_GRAD: {
struct Paint_Grad *grad = &paint->u.grad;
cr = grad->bottom.r;
cg = grad->bottom.g;
cb = grad->bottom.b;
diff_r = (float)(grad->top.r - cr)/steps;
diff_g = (float)(grad->top.g - cg)/steps;
diff_b = (float)(grad->top.b - cb)/steps;
break;
}
}
for (double i = slider->min; i < slider->value;
i += slider->step, fy -= box_s) {
if (paint->type == PAINT_GRAD) {
color = SDL_MapRGB(s->format, cr, cg, cb);
cr += diff_r;
cg += diff_g;
cb += diff_b;
}
bar.y = fy;
if (Graphics_FillRect(s, &bar, color))
return 1;
}
if (paint->type == PAINT_GRAD)
border_color = SDL_MapRGB(s->format, cr, cg, cb);
} else { /* continious */
Uint16 max_h = c->geo.h - (padding << 1);
bar.h = (slider->value - slider->min)*max_h/
(slider->max - slider->min);
bar.y = c->geo.y + c->geo.h - padding - bar.h;
switch (paint->type) {
case PAINT_PLAIN:
border_color = paint->u.plain.color;
if (Graphics_FillRect(s, &bar, border_color))
return 1;
break;
case PAINT_GRAD: {
SDL_Color border;
if (Graphics_GradFillRect(s, &bar, max_h,
&paint->u.grad.top,
&paint->u.grad.bottom, &border))
return 1;
border_color = SDL_MapRGB(s->format, border.r, border.g,
border.b);
break;
}
}
}
if (Graphics_DrawRect(s, &c->geo, border_color))
return 1;
if (slider->type == SLIDER_BUTTON) {
bar.w = c->geo.w - 2; /* reuse 'bar' */
bar.h = padding << 1;
bar.x = c->geo.x + 1;
bar.y = slider->u.button.button_y;
if (Graphics_FillRect(s, &bar, border_color))
return 1;
}
SDL_UpdateRects(s, 1, &c->geo);
/* slider label */
if (slider->label) {
if (Graphics_WriteText(s, c->geo.x, c->geo.y - FONTHEIGHT,
slider->label, border_color))
return 1;
SDL_UpdateRect(s, c->geo.x, c->geo.y - FONTHEIGHT,
strlen(slider->label)*FONTWIDTH, FONTHEIGHT);
}
/* slider value */
if (slider->show_value) {
Uint16 y = c->geo.y + c->geo.h + 1;
int len = Graphics_printf(s, c->geo.x, y, border_color,
"%g/%g", slider->value, slider->max);
if (len == -1)
return 1;
SDL_UpdateRect(s, c->geo.x, y, len*FONTWIDTH, FONTHEIGHT);
}
return 0;
}
int
Controls_Field(SDL_Surface *s, struct Control *c)
{
struct Field *field = &c->u.field;
if (Graphics_BlankRect(s, &c->geo))
return 1;
if (field->value) {
if (Graphics_FillRect(s, &c->geo, field->color))
return 1;
} else if (Graphics_DrawRect(s, &c->geo, field->color))
return 1;
if (field->label &&
Graphics_WriteText(s, c->geo.x + c->geo.w/2 -
strlen(field->label)*(FONTWIDTH/2),
c->geo.y + c->geo.h/2 - FONTHEIGHT/2,
field->label, field->value ?
display.background : field->color))
return 1;
SDL_UpdateRects(s, 1, &c->geo);
return 0;
}
int
Controls_Draw(SDL_Surface *s, struct Control *c)
{
switch (c->type) {
case SLIDER:
return Controls_Slider(s, c);
case FIELD:
return Controls_Field(s, c);
}
return 1;
}
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