diff options
Diffstat (limited to 'src/controls.c')
| -rw-r--r-- | src/controls.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/src/controls.c b/src/controls.c new file mode 100644 index 0000000..525ce55 --- /dev/null +++ b/src/controls.c @@ -0,0 +1,190 @@ +
+#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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