1 // ============================================================================
2 // Artsoft Retro-Game Library
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
7 // http://www.artsoft.org/
8 // ----------------------------------------------------------------------------
10 // ============================================================================
20 /* values for DrawGadget() */
21 #define DG_UNPRESSED 0
27 #define GADGET_DEACTIVATED(g) ((g)->x < 0 || (g)->y < 0)
30 static struct GadgetInfo *gadget_list_first_entry = NULL;
31 static struct GadgetInfo *gadget_list_last_entry = NULL;
32 static struct GadgetInfo *last_info_gi = NULL;
33 static int next_free_gadget_id = 1;
34 static boolean gadget_id_wrapped = FALSE;
36 static void (*PlayGadgetSoundActivating)(void) = NULL;
37 static void (*PlayGadgetSoundSelecting)(void) = NULL;
40 void InitGadgetsSoundCallback(void (*activating_function)(void),
41 void (*selecting_function)(void))
43 PlayGadgetSoundActivating = activating_function;
44 PlayGadgetSoundSelecting = selecting_function;
47 static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
49 struct GadgetInfo *gi = gadget_list_first_entry;
51 while (gi && gi->id != id)
57 static int getNewGadgetID()
59 int id = next_free_gadget_id++;
61 if (next_free_gadget_id <= 0) /* counter overrun */
63 gadget_id_wrapped = TRUE; /* now we must check each ID */
64 next_free_gadget_id = 0;
67 if (gadget_id_wrapped)
69 next_free_gadget_id++;
70 while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
71 next_free_gadget_id++;
74 if (next_free_gadget_id <= 0) /* cannot get new gadget id */
75 Error(ERR_EXIT, "too much gadgets -- this should not happen");
80 static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my,
83 struct GadgetInfo *gi;
85 /* first check for scrollbars in case of mouse scroll wheel button events */
86 if (IS_WHEEL_BUTTON(button))
88 /* real horizontal wheel or vertical wheel with modifier key pressed */
89 boolean check_horizontal = (IS_WHEEL_BUTTON_HORIZONTAL(button) ||
90 GetKeyModState() & KMOD_Shift);
92 /* check for the first active scrollbar with matching mouse wheel area */
93 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
95 if (gi->mapped && gi->active &&
96 ((gi->type & GD_TYPE_SCROLLBAR_HORIZONTAL && check_horizontal) ||
97 (gi->type & GD_TYPE_SCROLLBAR_VERTICAL && !check_horizontal)) &&
98 mx >= gi->wheelarea.x && mx < gi->wheelarea.x + gi->wheelarea.width &&
99 my >= gi->wheelarea.y && my < gi->wheelarea.y + gi->wheelarea.height)
103 /* no active scrollbar found -- ignore this scroll wheel button event */
107 /* open selectboxes may overlap other active gadgets, so check them first */
108 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
110 if (gi->mapped && gi->active &&
111 gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
112 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
113 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
117 /* check all other gadgets */
118 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
120 if (gi->mapped && gi->active &&
121 mx >= gi->x && mx < gi->x + gi->width &&
122 my >= gi->y && my < gi->y + gi->height)
129 static void setTextAreaCursorExt(struct GadgetInfo *gi, boolean set_cursor_pos)
131 char *text = gi->textarea.value;
132 int area_xsize = gi->textarea.xsize;
133 int area_ysize = gi->textarea.ysize;
134 int cursor_position = gi->textarea.cursor_position;
135 int cursor_x = gi->textarea.cursor_x;
136 int cursor_y = gi->textarea.cursor_y;
143 if (set_cursor_pos) /* x/y => position */
145 if (y == cursor_y && (x == cursor_x || (x < cursor_x && *text == '\n')))
148 else /* position => x/y */
150 if (pos == cursor_position)
154 if (x + 1 >= area_xsize || *text == '\n')
156 if (y + 1 >= area_ysize)
169 gi->textarea.cursor_x = x;
170 gi->textarea.cursor_y = y;
171 gi->textarea.cursor_x_preferred = x;
172 gi->textarea.cursor_position = pos;
175 static void setTextAreaCursorXY(struct GadgetInfo *gi, int x, int y)
177 gi->textarea.cursor_x = x;
178 gi->textarea.cursor_y = y;
180 setTextAreaCursorExt(gi, TRUE);
183 static void setTextAreaCursorPosition(struct GadgetInfo *gi, int pos)
185 gi->textarea.cursor_position = pos;
187 setTextAreaCursorExt(gi, FALSE);
190 static void default_callback_info(void *ptr)
195 static void default_callback_action(void *ptr)
200 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
202 struct GadgetDesign *gd;
203 int state = (pressed ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
204 boolean redraw_selectbox = FALSE;
209 gd = (!gi->active ? &gi->alt_design[state] :
210 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
214 case GD_TYPE_NORMAL_BUTTON:
215 case GD_TYPE_CHECK_BUTTON:
216 case GD_TYPE_RADIO_BUTTON:
217 BlitBitmapOnBackground(gd->bitmap, drawto,
218 gd->x, gd->y, gi->width, gi->height,
220 if (gi->deco.design.bitmap)
221 BlitBitmap(gi->deco.design.bitmap, drawto,
222 gi->deco.design.x, gi->deco.design.y,
223 gi->deco.width, gi->deco.height,
224 gi->x + gi->deco.x + (pressed ? gi->deco.xshift : 0),
225 gi->y + gi->deco.y + (pressed ? gi->deco.yshift : 0));
228 case GD_TYPE_TEXT_BUTTON:
231 int font_nr = (gi->active ? gi->font_active : gi->font);
232 int font_width = getFontWidth(font_nr);
233 int border_x = gi->border.xsize;
234 int border_y = gi->border.ysize;
235 int text_size = strlen(gi->textbutton.value);
236 int text_start = (gi->width - text_size * font_width) / 2;
238 /* left part of gadget */
239 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
240 border_x, gi->height, gi->x, gi->y);
242 /* middle part of gadget */
243 for (i=0; i < gi->textbutton.size; i++)
244 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
245 font_width, gi->height,
246 gi->x + border_x + i * font_width, gi->y);
248 /* right part of gadget */
249 BlitBitmapOnBackground(gd->bitmap, drawto,
250 gd->x + gi->border.width - border_x, gd->y,
251 border_x, gi->height,
252 gi->x + gi->width - border_x, gi->y);
254 /* gadget text value */
256 gi->x + text_start + (pressed ? gi->deco.xshift : 0),
257 gi->y + border_y + (pressed ? gi->deco.yshift : 0),
258 gi->textbutton.value, font_nr, BLIT_MASKED);
262 case GD_TYPE_TEXT_INPUT_ALPHANUMERIC:
263 case GD_TYPE_TEXT_INPUT_NUMERIC:
267 char cursor_string[2];
268 char text[MAX_GADGET_TEXTSIZE + 1];
269 int font_nr = (pressed ? gi->font_active : gi->font);
270 int font_width = getFontWidth(font_nr);
271 int border_x = gi->border.xsize;
272 int border_y = gi->border.ysize;
274 /* left part of gadget */
275 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
276 border_x, gi->height, gi->x, gi->y);
278 /* middle part of gadget */
279 for (i=0; i < gi->textinput.size + 1; i++)
280 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
281 font_width, gi->height,
282 gi->x + border_x + i * font_width, gi->y);
284 /* right part of gadget */
285 BlitBitmapOnBackground(gd->bitmap, drawto,
286 gd->x + gi->border.width - border_x, gd->y,
287 border_x, gi->height,
288 gi->x + gi->width - border_x, gi->y);
291 strcpy(text, gi->textinput.value);
294 /* gadget text value */
296 gi->x + border_x, gi->y + border_y, text,
297 font_nr, BLIT_MASKED);
299 cursor_letter = gi->textinput.value[gi->textinput.cursor_position];
300 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
301 cursor_string[1] = '\0';
303 /* draw cursor, if active */
307 gi->textinput.cursor_position * font_width,
308 gi->y + border_y, cursor_string,
309 font_nr, BLIT_INVERSE);
313 case GD_TYPE_TEXT_AREA:
317 char cursor_string[2];
318 int font_nr = (pressed ? gi->font_active : gi->font);
319 int font_width = getFontWidth(font_nr);
320 int font_height = getFontHeight(font_nr);
321 int border_x = gi->border.xsize;
322 int border_y = gi->border.ysize;
323 int gd_height = 2 * border_y + font_height;
325 /* top left part of gadget border */
326 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
327 border_x, border_y, gi->x, gi->y);
329 /* top middle part of gadget border */
330 for (i=0; i < gi->textarea.xsize; i++)
331 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
332 font_width, border_y,
333 gi->x + border_x + i * font_width, gi->y);
335 /* top right part of gadget border */
336 BlitBitmapOnBackground(gd->bitmap, drawto,
337 gd->x + gi->border.width - border_x, gd->y,
339 gi->x + gi->width - border_x, gi->y);
341 /* left and right part of gadget border for each row */
342 for (i=0; i < gi->textarea.ysize; i++)
344 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
345 border_x, font_height,
346 gi->x, gi->y + border_y + i * font_height);
347 BlitBitmapOnBackground(gd->bitmap, drawto,
348 gd->x + gi->border.width - border_x,
350 border_x, font_height,
351 gi->x + gi->width - border_x,
352 gi->y + border_y + i * font_height);
355 /* bottom left part of gadget border */
356 BlitBitmapOnBackground(gd->bitmap, drawto,
357 gd->x, gd->y + gd_height - border_y,
359 gi->x, gi->y + gi->height - border_y);
361 /* bottom middle part of gadget border */
362 for (i=0; i < gi->textarea.xsize; i++)
363 BlitBitmapOnBackground(gd->bitmap, drawto,
365 gd->y + gd_height - border_y,
366 font_width, border_y,
367 gi->x + border_x + i * font_width,
368 gi->y + gi->height - border_y);
370 /* bottom right part of gadget border */
371 BlitBitmapOnBackground(gd->bitmap, drawto,
372 gd->x + gi->border.width - border_x,
373 gd->y + gd_height - border_y,
375 gi->x + gi->width - border_x,
376 gi->y + gi->height - border_y);
378 ClearRectangleOnBackground(drawto,
381 gi->width - 2 * border_x,
382 gi->height - 2 * border_y);
384 /* gadget text value */
386 DrawTextBuffer(gi->x + border_x, gi->y + border_y, gi->textarea.value,
387 font_nr, gi->textarea.xsize, -1, gi->textarea.ysize, 0,
388 BLIT_ON_BACKGROUND, FALSE, FALSE, FALSE);
390 DrawTextToTextArea(gi->x + border_x, gi->y + border_y,
391 gi->textarea.value, font_nr, gi->textarea.xsize,
392 gi->textarea.xsize, gi->textarea.ysize,
396 cursor_letter = gi->textarea.value[gi->textarea.cursor_position];
397 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
398 cursor_string[1] = '\0';
400 /* draw cursor, if active */
403 gi->x + border_x + gi->textarea.cursor_x * font_width,
404 gi->y + border_y + gi->textarea.cursor_y * font_height,
406 font_nr, BLIT_INVERSE);
410 case GD_TYPE_SELECTBOX:
413 char text[MAX_GADGET_TEXTSIZE + 1];
414 int font_nr = (pressed ? gi->font_active : gi->font);
415 int font_width = getFontWidth(font_nr);
416 int font_height = getFontHeight(font_nr);
417 int border_x = gi->border.xsize;
418 int border_y = gi->border.ysize;
419 int button = gi->border.xsize_selectbutton;
420 int width_inner = gi->border.width - button - 2 * border_x;
421 int box_width = gi->selectbox.width;
422 int box_height = gi->selectbox.height;
424 /* left part of gadget */
425 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
426 border_x, gi->height, gi->x, gi->y);
428 /* middle part of gadget */
429 for (i=0; i < gi->selectbox.size; i++)
430 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
431 font_width, gi->height,
432 gi->x + border_x + i * font_width, gi->y);
434 /* button part of gadget */
435 BlitBitmapOnBackground(gd->bitmap, drawto,
436 gd->x + border_x + width_inner, gd->y,
438 gi->x + gi->width - border_x - button, gi->y);
440 /* right part of gadget */
441 BlitBitmapOnBackground(gd->bitmap, drawto,
442 gd->x + gi->border.width - border_x, gd->y,
443 border_x, gi->height,
444 gi->x + gi->width - border_x, gi->y);
447 strncpy(text, gi->selectbox.options[gi->selectbox.index].text,
449 text[gi->selectbox.size] = '\0';
451 /* gadget text value */
452 DrawTextExt(drawto, gi->x + border_x, gi->y + border_y, text,
453 font_nr, BLIT_MASKED);
457 if (!gi->selectbox.open)
459 gi->selectbox.open = TRUE;
460 gi->selectbox.stay_open = FALSE;
461 gi->selectbox.current_index = gi->selectbox.index;
463 /* save background under selectbox */
464 BlitBitmap(drawto, gfx.field_save_buffer,
465 gi->selectbox.x, gi->selectbox.y,
466 gi->selectbox.width, gi->selectbox.height,
467 gi->selectbox.x, gi->selectbox.y);
470 /* draw open selectbox */
472 /* top left part of gadget border */
473 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
475 gi->selectbox.x, gi->selectbox.y);
477 /* top middle part of gadget border */
478 for (i=0; i < gi->selectbox.size; i++)
479 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
480 font_width, border_y,
481 gi->selectbox.x + border_x + i * font_width,
484 /* top button part of gadget border */
485 BlitBitmapOnBackground(gd->bitmap, drawto,
486 gd->x + border_x + width_inner, gd->y,
488 gi->selectbox.x + box_width -border_x -button,
491 /* top right part of gadget border */
492 BlitBitmapOnBackground(gd->bitmap, drawto,
493 gd->x + gi->border.width - border_x, gd->y,
495 gi->selectbox.x + box_width - border_x,
498 /* left and right part of gadget border for each row */
499 for (i=0; i < gi->selectbox.num_values; i++)
501 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
502 border_x, font_height,
504 gi->selectbox.y + border_y + i*font_height);
505 BlitBitmapOnBackground(gd->bitmap, drawto,
506 gd->x + gi->border.width - border_x,
508 border_x, font_height,
509 gi->selectbox.x + box_width - border_x,
510 gi->selectbox.y + border_y + i*font_height);
513 /* bottom left part of gadget border */
514 BlitBitmapOnBackground(gd->bitmap, drawto,
515 gd->x, gd->y + gi->height - border_y,
518 gi->selectbox.y + box_height - border_y);
520 /* bottom middle part of gadget border */
521 for (i=0; i < gi->selectbox.size; i++)
522 BlitBitmapOnBackground(gd->bitmap, drawto,
524 gd->y + gi->height - border_y,
525 font_width, border_y,
526 gi->selectbox.x + border_x + i * font_width,
527 gi->selectbox.y + box_height - border_y);
529 /* bottom button part of gadget border */
530 BlitBitmapOnBackground(gd->bitmap, drawto,
531 gd->x + border_x + width_inner,
532 gd->y + gi->height - border_y,
534 gi->selectbox.x + box_width -border_x -button,
535 gi->selectbox.y + box_height - border_y);
537 /* bottom right part of gadget border */
538 BlitBitmapOnBackground(gd->bitmap, drawto,
539 gd->x + gi->border.width - border_x,
540 gd->y + gi->height - border_y,
542 gi->selectbox.x + box_width - border_x,
543 gi->selectbox.y + box_height - border_y);
545 ClearRectangleOnBackground(drawto,
546 gi->selectbox.x + border_x,
547 gi->selectbox.y + border_y,
548 gi->selectbox.width - 2 * border_x,
549 gi->selectbox.height - 2 * border_y);
551 /* selectbox text values */
552 for (i=0; i < gi->selectbox.num_values; i++)
554 int mask_mode = BLIT_MASKED;
556 strncpy(text, gi->selectbox.options[i].text, gi->selectbox.size);
557 text[gi->selectbox.size] = '\0';
559 if (i == gi->selectbox.current_index)
561 FillRectangle(drawto,
562 gi->selectbox.x + border_x,
563 gi->selectbox.y + border_y + i * font_height,
564 gi->selectbox.width - 2 * border_x, font_height,
565 gi->selectbox.inverse_color);
567 /* prevent use of cursor graphic by drawing at least two chars */
569 text[gi->selectbox.size] = '\0';
571 mask_mode = BLIT_INVERSE;
575 gi->selectbox.x + border_x,
576 gi->selectbox.y + border_y + i * font_height, text,
580 redraw_selectbox = TRUE;
582 else if (gi->selectbox.open)
584 gi->selectbox.open = FALSE;
586 /* restore background under selectbox */
587 BlitBitmap(gfx.field_save_buffer, drawto,
588 gi->selectbox.x, gi->selectbox.y,
589 gi->selectbox.width, gi->selectbox.height,
590 gi->selectbox.x, gi->selectbox.y);
592 /* redraw closed selectbox */
593 DrawGadget(gi, FALSE, FALSE);
595 redraw_selectbox = TRUE;
600 case GD_TYPE_SCROLLBAR_VERTICAL:
604 int ypos = gi->y + gi->scrollbar.position;
605 int design_full = gi->width;
606 int design_body = design_full - 2 * gi->border.ysize;
607 int size_full = gi->scrollbar.size;
608 int size_body = size_full - 2 * gi->border.ysize;
609 int num_steps = size_body / design_body;
610 int step_size_remain = size_body - num_steps * design_body;
612 /* clear scrollbar area */
613 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
614 gi->width, gi->height);
616 /* upper part of gadget */
617 BlitBitmapOnBackground(gd->bitmap, drawto,
619 gi->width, gi->border.ysize,
622 /* middle part of gadget */
623 for (i=0; i < num_steps; i++)
624 BlitBitmapOnBackground(gd->bitmap, drawto,
625 gd->x, gd->y + gi->border.ysize,
626 gi->width, design_body,
628 ypos + gi->border.ysize + i * design_body);
630 /* remaining middle part of gadget */
631 if (step_size_remain > 0)
632 BlitBitmapOnBackground(gd->bitmap, drawto,
633 gd->x, gd->y + gi->border.ysize,
634 gi->width, step_size_remain,
636 ypos + gi->border.ysize
637 + num_steps * design_body);
639 /* lower part of gadget */
640 BlitBitmapOnBackground(gd->bitmap, drawto,
641 gd->x, gd->y + design_full - gi->border.ysize,
642 gi->width, gi->border.ysize,
643 xpos, ypos + size_full - gi->border.ysize);
647 case GD_TYPE_SCROLLBAR_HORIZONTAL:
650 int xpos = gi->x + gi->scrollbar.position;
652 int design_full = gi->height;
653 int design_body = design_full - 2 * gi->border.xsize;
654 int size_full = gi->scrollbar.size;
655 int size_body = size_full - 2 * gi->border.xsize;
656 int num_steps = size_body / design_body;
657 int step_size_remain = size_body - num_steps * design_body;
659 /* clear scrollbar area */
660 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
661 gi->width, gi->height);
663 /* left part of gadget */
664 BlitBitmapOnBackground(gd->bitmap, drawto,
666 gi->border.xsize, gi->height,
669 /* middle part of gadget */
670 for (i=0; i < num_steps; i++)
671 BlitBitmapOnBackground(gd->bitmap, drawto,
672 gd->x + gi->border.xsize, gd->y,
673 design_body, gi->height,
674 xpos + gi->border.xsize + i * design_body,
677 /* remaining middle part of gadget */
678 if (step_size_remain > 0)
679 BlitBitmapOnBackground(gd->bitmap, drawto,
680 gd->x + gi->border.xsize, gd->y,
681 step_size_remain, gi->height,
682 xpos + gi->border.xsize
683 + num_steps * design_body,
686 /* right part of gadget */
687 BlitBitmapOnBackground(gd->bitmap, drawto,
688 gd->x + design_full - gi->border.xsize, gd->y,
689 gi->border.xsize, gi->height,
690 xpos + size_full - gi->border.xsize, ypos);
700 BlitBitmap(drawto, window,
701 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
703 if (gi->type == GD_TYPE_SELECTBOX && redraw_selectbox)
704 BlitBitmap(drawto, window,
705 gi->selectbox.x, gi->selectbox.y,
706 gi->selectbox.width, gi->selectbox.height,
707 gi->selectbox.x, gi->selectbox.y);
715 redraw_mask |= (IN_GFX_FIELD_FULL(x, y) ? REDRAW_FIELD :
716 IN_GFX_DOOR_1(x, y) ? REDRAW_DOOR_1 :
717 IN_GFX_DOOR_2(x, y) ? REDRAW_DOOR_2 :
718 IN_GFX_DOOR_3(x, y) ? REDRAW_DOOR_3 : REDRAW_ALL);
720 redraw_mask |= (gi->x < gfx.sx + gfx.sxsize ? REDRAW_FIELD :
721 gi->y < gfx.dy + gfx.dysize ? REDRAW_DOOR_1 :
722 gi->y > gfx.vy ? REDRAW_DOOR_2 : REDRAW_DOOR_3);
727 static int get_minimal_size_for_numeric_input(int minmax_value)
729 int min_size = 1; /* value needs at least one digit */
732 /* add number of digits needed for absolute value */
733 for (i = 10; i <= ABS(minmax_value); i *= 10)
736 /* if min/max value is negative, add one digit for minus sign */
737 if (minmax_value < 0)
743 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
750 while (tag != GDI_END)
755 gi->custom_id = va_arg(ap, int);
758 case GDI_CUSTOM_TYPE_ID:
759 gi->custom_type_id = va_arg(ap, int);
764 int max_textsize = MAX_INFO_TEXTSIZE;
765 char *text = va_arg(ap, char *);
768 strncpy(gi->info_text, text, max_textsize);
772 gi->info_text[max_textsize] = '\0';
777 gi->x = va_arg(ap, int);
781 gi->y = va_arg(ap, int);
785 gi->width = va_arg(ap, int);
789 gi->height = va_arg(ap, int);
793 gi->type = va_arg(ap, unsigned int);
797 gi->state = va_arg(ap, unsigned int);
801 gi->active = (boolean)va_arg(ap, int);
804 case GDI_DIRECT_DRAW:
805 gi->direct_draw = (boolean)va_arg(ap, int);
809 gi->checked = (boolean)va_arg(ap, int);
813 gi->radio_nr = va_arg(ap, unsigned int);
816 case GDI_NUMBER_VALUE:
817 gi->textinput.number_value = va_arg(ap, int);
818 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
819 strcpy(gi->textinput.last_value, gi->textinput.value);
820 gi->textinput.cursor_position = strlen(gi->textinput.value);
824 gi->textinput.number_min = va_arg(ap, int);
825 if (gi->textinput.number_value < gi->textinput.number_min)
827 gi->textinput.number_value = gi->textinput.number_min;
828 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
829 strcpy(gi->textinput.last_value, gi->textinput.value);
834 gi->textinput.number_max = va_arg(ap, int);
835 if (gi->textinput.number_value > gi->textinput.number_max)
837 gi->textinput.number_value = gi->textinput.number_max;
838 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
839 strcpy(gi->textinput.last_value, gi->textinput.value);
845 int max_textsize = MAX_GADGET_TEXTSIZE;
847 if (gi->textinput.size)
848 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE);
850 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
851 strcpy(gi->textinput.last_value, gi->textinput.value);
853 gi->textinput.value[max_textsize] = '\0';
854 gi->textinput.cursor_position = strlen(gi->textinput.value);
856 /* same tag also used for other gadget definitions */
857 strcpy(gi->textbutton.value, gi->textinput.value);
858 strcpy(gi->textarea.value, gi->textinput.value);
859 strcpy(gi->textarea.last_value, gi->textinput.value);
865 int tag_value = va_arg(ap, int);
866 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE);
868 gi->textinput.size = max_textsize;
869 gi->textinput.value[max_textsize] = '\0';
870 strcpy(gi->textinput.last_value, gi->textinput.value);
872 /* same tag also used for other gadget definitions */
874 gi->textarea.size = max_textsize;
875 gi->textarea.value[max_textsize] = '\0';
876 strcpy(gi->textarea.last_value, gi->textinput.value);
878 gi->textbutton.size = max_textsize;
879 gi->textbutton.value[max_textsize] = '\0';
881 gi->selectbox.size = gi->textinput.size;
886 gi->font = va_arg(ap, int);
887 if (gi->font_active == 0)
888 gi->font_active = gi->font;
891 case GDI_TEXT_FONT_ACTIVE:
892 gi->font_active = va_arg(ap, int);
895 case GDI_SELECTBOX_OPTIONS:
896 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
899 case GDI_SELECTBOX_INDEX:
900 gi->selectbox.index = va_arg(ap, int);
903 case GDI_DESIGN_UNPRESSED:
904 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
905 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
906 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
909 case GDI_DESIGN_PRESSED:
910 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
911 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
912 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
915 case GDI_ALT_DESIGN_UNPRESSED:
916 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
917 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
918 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
921 case GDI_ALT_DESIGN_PRESSED:
922 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
923 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
924 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
927 case GDI_BORDER_SIZE:
928 gi->border.xsize = va_arg(ap, int);
929 gi->border.ysize = va_arg(ap, int);
932 case GDI_BORDER_SIZE_SELECTBUTTON:
933 gi->border.xsize_selectbutton = va_arg(ap, int);
936 case GDI_DESIGN_WIDTH:
937 gi->border.width = va_arg(ap, int);
940 case GDI_DECORATION_DESIGN:
941 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
942 gi->deco.design.x = va_arg(ap, int);
943 gi->deco.design.y = va_arg(ap, int);
946 case GDI_DECORATION_POSITION:
947 gi->deco.x = va_arg(ap, int);
948 gi->deco.y = va_arg(ap, int);
951 case GDI_DECORATION_SIZE:
952 gi->deco.width = va_arg(ap, int);
953 gi->deco.height = va_arg(ap, int);
956 case GDI_DECORATION_SHIFTING:
957 gi->deco.xshift = va_arg(ap, int);
958 gi->deco.yshift = va_arg(ap, int);
962 gi->event_mask = va_arg(ap, unsigned int);
966 gi->drawing.area_xsize = va_arg(ap, int);
967 gi->drawing.area_ysize = va_arg(ap, int);
969 /* determine dependent values for drawing area gadget, if needed */
970 if (gi->width == 0 && gi->height == 0 &&
971 gi->drawing.item_xsize !=0 && gi->drawing.item_ysize !=0)
973 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
974 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
976 else if (gi->drawing.item_xsize == 0 && gi->drawing.item_ysize == 0 &&
977 gi->width != 0 && gi->height != 0)
979 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
980 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
983 /* same tag also used for other gadget definitions */
984 gi->textarea.xsize = gi->drawing.area_xsize;
985 gi->textarea.ysize = gi->drawing.area_ysize;
987 if (gi->type & GD_TYPE_TEXT_AREA) /* force recalculation */
996 gi->drawing.item_xsize = va_arg(ap, int);
997 gi->drawing.item_ysize = va_arg(ap, int);
999 /* determine dependent values for drawing area gadget, if needed */
1000 if (gi->width == 0 && gi->height == 0 &&
1001 gi->drawing.area_xsize !=0 && gi->drawing.area_ysize !=0)
1003 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1004 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1006 else if (gi->drawing.area_xsize == 0 && gi->drawing.area_ysize == 0 &&
1007 gi->width != 0 && gi->height != 0)
1009 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
1010 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
1014 case GDI_SCROLLBAR_ITEMS_MAX:
1015 gi->scrollbar.items_max = va_arg(ap, int);
1018 case GDI_SCROLLBAR_ITEMS_VISIBLE:
1019 gi->scrollbar.items_visible = va_arg(ap, int);
1022 case GDI_SCROLLBAR_ITEM_POSITION:
1023 gi->scrollbar.item_position = va_arg(ap, int);
1026 case GDI_WHEEL_AREA_X:
1027 gi->wheelarea.x = va_arg(ap, int);
1030 case GDI_WHEEL_AREA_Y:
1031 gi->wheelarea.y = va_arg(ap, int);
1034 case GDI_WHEEL_AREA_WIDTH:
1035 gi->wheelarea.width = va_arg(ap, int);
1038 case GDI_WHEEL_AREA_HEIGHT:
1039 gi->wheelarea.height = va_arg(ap, int);
1042 case GDI_CALLBACK_INFO:
1043 gi->callback_info = va_arg(ap, gadget_function);
1046 case GDI_CALLBACK_ACTION:
1047 gi->callback_action = va_arg(ap, gadget_function);
1051 Error(ERR_EXIT, "HandleGadgetTags(): unknown tag %d", tag);
1054 tag = va_arg(ap, int); /* read next tag */
1057 /* check if gadget is complete */
1058 if (gi->type != GD_TYPE_DRAWING_AREA &&
1059 (!gi->design[GD_BUTTON_UNPRESSED].bitmap ||
1060 !gi->design[GD_BUTTON_PRESSED].bitmap))
1061 Error(ERR_EXIT, "gadget incomplete (missing Bitmap)");
1063 /* adjust gadget values in relation to other gadget values */
1065 if (gi->type & GD_TYPE_TEXT_INPUT)
1067 int font_nr = gi->font_active;
1068 int font_width = getFontWidth(font_nr);
1069 int font_height = getFontHeight(font_nr);
1070 int border_xsize = gi->border.xsize;
1071 int border_ysize = gi->border.ysize;
1073 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1075 int number_min = gi->textinput.number_min;
1076 int number_max = gi->textinput.number_max;
1077 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1078 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1079 int min_size = MAX(min_size_min, min_size_max);
1081 /* expand gadget text input size, if maximal value is too large */
1082 if (gi->textinput.size < min_size)
1083 gi->textinput.size = min_size;
1086 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1087 gi->height = 2 * border_ysize + font_height;
1090 if (gi->type & GD_TYPE_SELECTBOX)
1092 int font_nr = gi->font_active;
1093 int font_width = getFontWidth(font_nr);
1094 int font_height = getFontHeight(font_nr);
1095 int border_xsize = gi->border.xsize;
1096 int border_ysize = gi->border.ysize;
1097 int button_size = gi->border.xsize_selectbutton;
1098 int bottom_screen_border = gfx.sy + gfx.sysize - font_height;
1102 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1103 gi->height = 2 * border_ysize + font_height;
1105 if (gi->selectbox.options == NULL)
1106 Error(ERR_EXIT, "selectbox gadget incomplete (missing options array)");
1108 gi->selectbox.num_values = 0;
1109 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1110 gi->selectbox.num_values++;
1112 /* calculate values for open selectbox */
1113 gi->selectbox.width = gi->width;
1114 gi->selectbox.height =
1115 2 * border_ysize + gi->selectbox.num_values * font_height;
1117 gi->selectbox.x = gi->x;
1118 gi->selectbox.y = gi->y + gi->height;
1119 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1120 gi->selectbox.y = gi->y - gi->selectbox.height;
1121 if (gi->selectbox.y < 0)
1122 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1124 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1125 src_x += font_width / 2;
1126 src_y += font_height / 2;
1128 /* there may be esoteric cases with missing or too small font bitmap */
1129 if (src_bitmap != NULL &&
1130 src_x < src_bitmap->width && src_y < src_bitmap->height)
1131 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1133 /* always start with closed selectbox */
1134 gi->selectbox.open = FALSE;
1137 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1139 struct GadgetTextInput *text = &gi->textinput;
1140 int value = text->number_value;
1142 text->number_value = (value < text->number_min ? text->number_min :
1143 value > text->number_max ? text->number_max :
1146 sprintf(text->value, "%d", text->number_value);
1149 if (gi->type & GD_TYPE_TEXT_BUTTON)
1151 int font_nr = gi->font_active;
1152 int font_width = getFontWidth(font_nr);
1153 int font_height = getFontHeight(font_nr);
1154 int border_xsize = gi->border.xsize;
1155 int border_ysize = gi->border.ysize;
1157 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1158 gi->height = 2 * border_ysize + font_height;
1161 if (gi->type & GD_TYPE_SCROLLBAR)
1163 struct GadgetScrollbar *gs = &gi->scrollbar;
1164 int scrollbar_size_cmp;
1166 if (gi->width == 0 || gi->height == 0 ||
1167 gs->items_max == 0 || gs->items_visible == 0)
1168 Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
1170 /* calculate internal scrollbar values */
1171 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1172 gi->width : gi->height);
1173 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1174 gi->height : gi->width);
1176 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1177 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1178 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1180 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1181 gs->position_max = gs->size_max - gs->size;
1182 gs->correction = gs->size_max / gs->items_max / 2;
1184 /* finetuning for maximal right/bottom position */
1185 if (gs->item_position == gs->items_max - gs->items_visible)
1186 gs->position = gs->position_max;
1189 if (gi->type & GD_TYPE_TEXT_AREA)
1191 int font_nr = gi->font_active;
1192 int font_width = getFontWidth(font_nr);
1193 int font_height = getFontHeight(font_nr);
1194 int border_xsize = gi->border.xsize;
1195 int border_ysize = gi->border.ysize;
1197 if (gi->width == 0 || gi->height == 0)
1199 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1200 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1204 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1205 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1210 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1214 va_start(ap, first_tag);
1215 HandleGadgetTags(gi, first_tag, ap);
1221 void RedrawGadget(struct GadgetInfo *gi)
1227 DrawGadget(gi, gi->state, gi->direct_draw);
1230 struct GadgetInfo *CreateGadget(int first_tag, ...)
1232 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1235 /* always start with reliable default values */
1236 new_gadget->id = getNewGadgetID();
1237 new_gadget->callback_info = default_callback_info;
1238 new_gadget->callback_action = default_callback_action;
1239 new_gadget->active = TRUE;
1240 new_gadget->direct_draw = TRUE;
1242 new_gadget->next = NULL;
1244 va_start(ap, first_tag);
1245 HandleGadgetTags(new_gadget, first_tag, ap);
1248 /* insert new gadget into global gadget list */
1249 if (gadget_list_last_entry)
1251 gadget_list_last_entry->next = new_gadget;
1252 gadget_list_last_entry = gadget_list_last_entry->next;
1255 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1260 void FreeGadget(struct GadgetInfo *gi)
1262 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1267 /* prevent "last_info_gi" from pointing to memory that will be freed */
1268 if (last_info_gi == gi)
1269 last_info_gi = NULL;
1271 while (gi_previous != NULL && gi_previous->next != gi)
1272 gi_previous = gi_previous->next;
1274 if (gi == gadget_list_first_entry)
1275 gadget_list_first_entry = gi->next;
1277 if (gi == gadget_list_last_entry)
1278 gadget_list_last_entry = gi_previous;
1280 if (gi_previous != NULL)
1281 gi_previous->next = gi->next;
1286 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1288 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1291 gi->textinput.number_value = atoi(gi->textinput.value);
1293 if (gi->textinput.number_value < gi->textinput.number_min)
1294 gi->textinput.number_value = gi->textinput.number_min;
1295 if (gi->textinput.number_value > gi->textinput.number_max)
1296 gi->textinput.number_value = gi->textinput.number_max;
1298 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1300 if (gi->textinput.cursor_position < 0)
1301 gi->textinput.cursor_position = 0;
1302 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1303 gi->textinput.cursor_position = strlen(gi->textinput.value);
1306 /* global pointer to gadget actually in use (when mouse button pressed) */
1307 static struct GadgetInfo *last_gi = NULL;
1309 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1311 if (gi == NULL || gi->mapped || GADGET_DEACTIVATED(gi))
1317 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1320 void MapGadget(struct GadgetInfo *gi)
1322 MapGadgetExt(gi, TRUE);
1325 void UnmapGadget(struct GadgetInfo *gi)
1327 if (gi == NULL || !gi->mapped)
1336 #define MAX_NUM_GADGETS 1024
1337 #define MULTIMAP_UNMAP (1 << 0)
1338 #define MULTIMAP_REMAP (1 << 1)
1339 #define MULTIMAP_REDRAW (1 << 2)
1340 #define MULTIMAP_PLAYFIELD (1 << 3)
1341 #define MULTIMAP_DOOR_1 (1 << 4)
1342 #define MULTIMAP_DOOR_2 (1 << 5)
1343 #define MULTIMAP_DOOR_3 (1 << 6)
1344 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1349 static void MultiMapGadgets(int mode)
1351 struct GadgetInfo *gi = gadget_list_first_entry;
1352 static boolean map_state[MAX_NUM_GADGETS];
1361 if ((mode & MULTIMAP_PLAYFIELD && IN_GFX_FIELD_FULL(x, y)) ||
1362 (mode & MULTIMAP_DOOR_1 && IN_GFX_DOOR_1(x, y)) ||
1363 (mode & MULTIMAP_DOOR_2 && IN_GFX_DOOR_2(x, y)) ||
1364 (mode & MULTIMAP_DOOR_3 && IN_GFX_DOOR_3(x, y)) ||
1365 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1367 if ((mode & MULTIMAP_PLAYFIELD &&
1368 gi->x < gfx.sx + gfx.sxsize) ||
1369 (mode & MULTIMAP_DOOR_1 &&
1370 gi->x >= gfx.dx && gi->y < gfx.dy + gfx.dysize) ||
1371 (mode & MULTIMAP_DOOR_2 &&
1372 gi->x >= gfx.dx && gi->y > gfx.dy + gfx.dysize) ||
1373 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1376 if (mode & MULTIMAP_UNMAP)
1378 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1383 if (map_state[map_count++ % MAX_NUM_GADGETS])
1384 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1392 void UnmapAllGadgets()
1394 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1397 void RemapAllGadgets()
1399 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1402 boolean anyTextInputGadgetActive()
1404 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1407 boolean anyTextAreaGadgetActive()
1409 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1412 boolean anySelectboxGadgetActive()
1414 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1417 boolean anyScrollbarGadgetActive()
1419 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1422 boolean anyTextGadgetActive()
1424 return (anyTextInputGadgetActive() ||
1425 anyTextAreaGadgetActive() ||
1426 anySelectboxGadgetActive());
1429 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1431 return (gi != NULL &&
1432 gi->type & GD_TYPE_SELECTBOX &&
1433 mx >= gi->x && mx < gi->x + gi->width &&
1434 my >= gi->y && my < gi->y + gi->height);
1437 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1439 return (gi != NULL &&
1440 gi->type & GD_TYPE_SELECTBOX &&
1441 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1442 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1445 void ClickOnGadget(struct GadgetInfo *gi, int button)
1450 /* simulate releasing mouse button over last gadget, if still pressed */
1452 HandleGadgets(-1, -1, 0);
1454 /* simulate pressing mouse button over specified gadget */
1455 HandleGadgets(gi->x, gi->y, button);
1457 /* simulate releasing mouse button over specified gadget */
1458 HandleGadgets(gi->x, gi->y, 0);
1461 boolean HandleGadgets(int mx, int my, int button)
1463 static unsigned int pressed_delay = 0;
1464 static unsigned int pressed_delay_value = GADGET_FRAME_DELAY;
1465 static int last_button = 0;
1466 static int last_mx = 0, last_my = 0;
1467 static int pressed_mx = 0, pressed_my = 0;
1468 static boolean keep_selectbox_open = FALSE;
1469 static boolean gadget_stopped = FALSE;
1470 int scrollbar_mouse_pos = 0;
1471 struct GadgetInfo *new_gi, *gi;
1472 boolean press_event;
1473 boolean release_event;
1474 boolean mouse_moving;
1475 boolean mouse_inside_select_line;
1476 boolean mouse_inside_select_area;
1477 boolean mouse_released_where_pressed;
1478 boolean gadget_pressed;
1479 boolean gadget_pressed_repeated;
1480 boolean gadget_pressed_off_borders;
1481 boolean gadget_pressed_inside_select_line;
1482 boolean gadget_pressed_delay_reached;
1483 boolean gadget_moving;
1484 boolean gadget_moving_inside;
1485 boolean gadget_moving_off_borders;
1486 boolean gadget_draggable;
1487 boolean gadget_dragging;
1488 boolean gadget_released;
1489 boolean gadget_released_inside;
1491 boolean gadget_released_inside_select_line;
1493 boolean gadget_released_inside_select_area;
1494 boolean gadget_released_off_borders;
1495 boolean changed_position = FALSE;
1497 /* check if there are any gadgets defined */
1498 if (gadget_list_first_entry == NULL)
1501 /* simulated release of mouse button over last gadget */
1502 if (mx == -1 && my == -1 && button == 0)
1508 /* check which gadget is under the mouse pointer */
1509 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1511 /* check if button state has changed since last invocation */
1512 press_event = (button != 0 && last_button == 0);
1513 release_event = (button == 0 && last_button != 0);
1514 last_button = button;
1516 /* check if mouse has been moved since last invocation */
1517 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1521 if (press_event && new_gi != last_gi)
1527 mouse_released_where_pressed =
1528 (release_event && mx == pressed_mx && my == pressed_my);
1530 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1531 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1533 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1535 gadget_pressed_inside_select_line =
1536 (press_event && new_gi != NULL &&
1537 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1538 insideSelectboxLine(new_gi, mx, my));
1540 /* if mouse button pressed outside text or selectbox gadget, deactivate it */
1541 if (anyTextGadgetActive() &&
1542 (gadget_pressed_off_borders ||
1543 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1545 struct GadgetInfo *gi = last_gi;
1546 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
1548 /* check if text gadget has changed its value */
1549 if (gi->type & GD_TYPE_TEXT_INPUT)
1551 CheckRangeOfNumericInputGadget(gi);
1553 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1554 strcpy(gi->textinput.last_value, gi->textinput.value);
1556 gadget_changed = FALSE;
1559 /* selectbox does not change its value when closed by clicking outside */
1560 if (gi->type & GD_TYPE_SELECTBOX)
1561 gadget_changed = FALSE;
1563 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1565 gi->event.type = GD_EVENT_TEXT_LEAVING;
1567 if (gadget_changed && !(gi->type & GD_TYPE_SELECTBOX))
1568 gi->callback_action(gi);
1572 if (gadget_pressed_inside_select_line)
1577 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1578 gadget_pressed_repeated =
1579 (button != 0 && last_gi != NULL && new_gi == last_gi);
1581 gadget_pressed_delay_reached =
1582 DelayReached(&pressed_delay, pressed_delay_value);
1584 gadget_released = (release_event && last_gi != NULL);
1585 gadget_released_inside = (gadget_released && new_gi == last_gi);
1586 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1588 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1589 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1590 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1592 /* when handling selectbox, set additional state values */
1593 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1596 gadget_released_inside_select_line = insideSelectboxLine(last_gi, mx, my);
1598 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1603 gadget_released_inside_select_line = FALSE;
1605 gadget_released_inside_select_area = FALSE;
1608 /* setting state for handling over-large selectbox */
1609 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1610 keep_selectbox_open = FALSE;
1612 /* if new gadget pressed, store this gadget */
1616 /* 'gi' is actually handled gadget */
1619 /* if gadget is scrollbar, choose mouse position value */
1620 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1621 scrollbar_mouse_pos =
1622 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1624 /* if mouse button released, no gadget needs to be handled anymore */
1625 if (gadget_released)
1627 if (gi->type & GD_TYPE_SELECTBOX &&
1628 (keep_selectbox_open ||
1629 mouse_released_where_pressed ||
1630 !gadget_released_inside_select_area)) /* selectbox stays open */
1632 gi->selectbox.stay_open = TRUE;
1636 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1637 gi->type & GD_TYPE_TEXT_AREA)) /* text input stays open */
1641 /* modify event position values even if no gadget is pressed */
1642 if (button == 0 && !release_event)
1645 /* if new gadget or if no gadget was pressed, release stopped processing */
1646 if (gadget_pressed || new_gi == NULL)
1647 gadget_stopped = FALSE;
1649 /* if gadget was stopped while being handled, stop gadget processing here */
1655 int last_x = gi->event.x;
1656 int last_y = gi->event.y;
1658 gi->event.x = mx - gi->x;
1659 gi->event.y = my - gi->y;
1661 if (gi->type == GD_TYPE_DRAWING_AREA)
1663 gi->event.x /= gi->drawing.item_xsize;
1664 gi->event.y /= gi->drawing.item_ysize;
1666 if (last_x != gi->event.x || last_y != gi->event.y)
1667 changed_position = TRUE;
1669 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1671 int old_cursor_position = gi->textinput.cursor_position;
1673 /* if mouse button pressed inside activated text gadget, set cursor */
1674 gi->textinput.cursor_position =
1675 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1677 if (gi->textinput.cursor_position < 0)
1678 gi->textinput.cursor_position = 0;
1679 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1680 gi->textinput.cursor_position = strlen(gi->textinput.value);
1682 if (gi->textinput.cursor_position != old_cursor_position)
1683 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1685 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1687 int old_cursor_position = gi->textarea.cursor_position;
1688 int x = (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1689 int y = (my - gi->y - gi->border.ysize) / getFontHeight(gi->font);
1691 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1692 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1694 setTextAreaCursorXY(gi, x, y);
1696 if (gi->textarea.cursor_position != old_cursor_position)
1697 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1699 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1700 !keep_selectbox_open)
1702 int old_index = gi->selectbox.current_index;
1704 /* if mouse moving inside activated selectbox, select value */
1705 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1706 gi->selectbox.current_index =
1707 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1709 if (gi->selectbox.current_index < 0)
1710 gi->selectbox.current_index = 0;
1711 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1712 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1714 if (gi->selectbox.current_index != old_index)
1715 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1719 /* handle gadget popup info text */
1720 if (last_info_gi != new_gi ||
1721 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
1723 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
1725 new_gi->event.type = GD_EVENT_INFO_ENTERING;
1726 new_gi->callback_info(new_gi);
1728 else if (last_info_gi != NULL)
1730 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
1731 last_info_gi->callback_info(last_info_gi);
1734 last_info_gi = new_gi;
1737 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
1739 /* reset drag position for newly pressed scrollbar to "not dragging" */
1740 if (gadget_pressed && gadget_draggable)
1741 gi->scrollbar.drag_position = -1;
1743 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
1745 /* clicking next to a scrollbar to move it is not considered "moving" */
1746 if (gadget_draggable && !gadget_dragging)
1747 gadget_moving = FALSE;
1749 /* when leaving scrollbar area when jump-scrolling, stop gadget processing */
1750 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
1751 gadget_stopped = TRUE;
1753 if ((gadget_pressed) ||
1754 (gadget_pressed_repeated && gadget_pressed_delay_reached))
1756 if (gadget_pressed) /* gadget pressed the first time */
1758 /* initialize delay counter */
1759 DelayReached(&pressed_delay, 0);
1761 /* start gadget delay with longer delay after first click on gadget */
1762 pressed_delay_value = GADGET_FRAME_DELAY_FIRST;
1764 else /* gadget hold pressed for some time */
1766 /* after first repeated gadget click, continue with shorter delay value */
1767 pressed_delay_value = GADGET_FRAME_DELAY;
1770 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
1772 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1773 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1774 int slider_start = gpos + gi->scrollbar.position;
1775 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1776 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1778 if (IS_WHEEL_BUTTON(button) || !inside_slider)
1780 /* click scrollbar one scrollbar length up/left or down/right */
1782 struct GadgetScrollbar *gs = &gi->scrollbar;
1783 int old_item_position = gs->item_position;
1784 int item_steps = gs->items_visible - 1;
1785 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
1787 if (IS_WHEEL_BUTTON(button))
1789 boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
1791 item_steps = (scroll_single_step ? 1 : DEFAULT_WHEEL_STEPS);
1792 item_direction = (button == MB_WHEEL_UP ||
1793 button == MB_WHEEL_LEFT ? -1 : +1);
1796 changed_position = FALSE;
1798 gs->item_position += item_steps * item_direction;
1800 if (gs->item_position < 0)
1801 gs->item_position = 0;
1802 else if (gs->item_position > gs->items_max - gs->items_visible)
1803 gs->item_position = gs->items_max - gs->items_visible;
1805 if (old_item_position != gs->item_position)
1807 gi->event.item_position = gs->item_position;
1808 changed_position = TRUE;
1811 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
1814 gi->state = GD_BUTTON_UNPRESSED;
1815 gi->event.type = GD_EVENT_MOVING;
1816 gi->event.off_borders = FALSE;
1818 if (gi->event_mask & GD_EVENT_MOVING && changed_position)
1819 gi->callback_action(gi);
1825 /* don't handle this scrollbar anymore when mouse position reached */
1826 if (gadget_pressed_repeated)
1828 gadget_stopped = TRUE;
1838 PlayGadgetSoundActivating();
1840 if (gi->type == GD_TYPE_CHECK_BUTTON)
1842 gi->checked = !gi->checked;
1844 else if (gi->type == GD_TYPE_RADIO_BUTTON)
1846 struct GadgetInfo *rgi = gadget_list_first_entry;
1851 rgi->type == GD_TYPE_RADIO_BUTTON &&
1852 rgi->radio_nr == gi->radio_nr &&
1855 rgi->checked = FALSE;
1856 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
1864 else if (gi->type & GD_TYPE_SCROLLBAR)
1866 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1867 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1868 int slider_start = gpos + gi->scrollbar.position;
1869 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1870 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1872 if (!IS_WHEEL_BUTTON(button) && inside_slider)
1874 /* start dragging scrollbar */
1875 gi->scrollbar.drag_position =
1876 scrollbar_mouse_pos - gi->scrollbar.position;
1879 else if (gi->type & GD_TYPE_SELECTBOX)
1881 /* keep selectbox open in case of over-large selectbox */
1882 keep_selectbox_open = (mouse_inside_select_line &&
1883 mouse_inside_select_area);
1886 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1888 gi->state = GD_BUTTON_PRESSED;
1889 gi->event.type = GD_EVENT_PRESSED;
1890 gi->event.button = button;
1891 gi->event.off_borders = FALSE;
1893 if (gi->event_mask & GD_EVENT_PRESSED)
1894 gi->callback_action(gi);
1897 if (gadget_pressed_repeated)
1899 gi->event.type = GD_EVENT_PRESSED;
1901 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
1902 gi->callback_action(gi);
1907 if (gi->type & GD_TYPE_BUTTON)
1909 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
1910 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1911 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
1912 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1914 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
1916 int old_index = gi->selectbox.current_index;
1918 /* if mouse moving inside activated selectbox, select value */
1919 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1920 gi->selectbox.current_index =
1921 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1923 if (gi->selectbox.current_index < 0)
1924 gi->selectbox.current_index = 0;
1925 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1926 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1928 if (gi->selectbox.current_index != old_index)
1929 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1931 else if (gi->type & GD_TYPE_SCROLLBAR)
1933 struct GadgetScrollbar *gs = &gi->scrollbar;
1934 int old_item_position = gs->item_position;
1936 gs->position = scrollbar_mouse_pos - gs->drag_position;
1938 /* make sure to always precisely reach end positions when dragging */
1939 if (gs->position <= 0)
1942 gs->item_position = 0;
1944 else if (gs->position >= gs->position_max)
1946 gs->position = gs->position_max;
1947 gs->item_position = gs->items_max - gs->items_visible;
1952 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
1955 if (gs->item_position < 0)
1956 gs->item_position = 0;
1957 if (gs->item_position > gs->items_max - 1)
1958 gs->item_position = gs->items_max - 1;
1960 if (old_item_position != gs->item_position)
1962 gi->event.item_position = gs->item_position;
1963 changed_position = TRUE;
1966 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1969 gi->state = (gadget_moving_inside || gadget_draggable ?
1970 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
1971 gi->event.type = GD_EVENT_MOVING;
1972 gi->event.off_borders = gadget_moving_off_borders;
1974 if (gi->event_mask & GD_EVENT_MOVING && changed_position &&
1975 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
1976 gi->callback_action(gi);
1979 if (gadget_released_inside)
1981 boolean deactivate_gadget = TRUE;
1982 boolean gadget_changed = TRUE;
1984 if (gi->type & GD_TYPE_SELECTBOX)
1986 if (keep_selectbox_open ||
1987 mouse_released_where_pressed ||
1988 !gadget_released_inside_select_area) /* selectbox stays open */
1990 deactivate_gadget = FALSE;
1991 gadget_changed = FALSE;
1993 else if (gi->selectbox.index != gi->selectbox.current_index)
1994 gi->selectbox.index = gi->selectbox.current_index;
1996 gadget_changed = FALSE;
1999 if (deactivate_gadget &&
2000 !(gi->type & GD_TYPE_TEXT_INPUT ||
2001 gi->type & GD_TYPE_TEXT_AREA)) /* text input stays open */
2002 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2004 gi->state = GD_BUTTON_UNPRESSED;
2005 gi->event.type = GD_EVENT_RELEASED;
2007 if ((gi->event_mask & GD_EVENT_RELEASED) && gadget_changed)
2009 gi->callback_action(gi);
2013 if (gadget_released_off_borders)
2015 if (gi->type & GD_TYPE_SCROLLBAR)
2016 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2018 gi->state = GD_BUTTON_UNPRESSED;
2019 gi->event.type = GD_EVENT_RELEASED;
2021 if (gi->event_mask & GD_EVENT_RELEASED &&
2022 gi->event_mask & GD_EVENT_OFF_BORDERS)
2023 gi->callback_action(gi);
2026 /* handle gadgets unmapped/mapped between pressing and releasing */
2027 if (release_event && !gadget_released && new_gi)
2028 new_gi->state = GD_BUTTON_UNPRESSED;
2030 return (gadget_pressed || gadget_pressed_repeated ||
2031 gadget_released || gadget_moving);
2034 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
2036 char text[MAX_GADGET_TEXTSIZE + 1];
2037 int cursor_position = gi->textarea.cursor_position;
2039 if (strlen(gi->textarea.value) >= MAX_GADGET_TEXTSIZE) /* no space left */
2042 strcpy(text, gi->textarea.value);
2043 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
2044 gi->textarea.value[cursor_position] = c;
2046 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2049 boolean HandleGadgetsKeyInput(Key key)
2051 struct GadgetInfo *gi = last_gi;
2053 if (gi == NULL || !gi->mapped ||
2054 !(gi->type & GD_TYPE_TEXT_INPUT ||
2055 gi->type & GD_TYPE_TEXT_AREA ||
2056 gi->type & GD_TYPE_SELECTBOX))
2059 if (key == KSYM_Return) /* valid for both text input and selectbox */
2061 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_RETURN) != 0);
2063 if (gi->type & GD_TYPE_TEXT_INPUT)
2065 CheckRangeOfNumericInputGadget(gi);
2067 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2068 strcpy(gi->textinput.last_value, gi->textinput.value);
2070 gadget_changed = FALSE;
2072 else if (gi->type & GD_TYPE_SELECTBOX)
2074 if (gi->selectbox.index != gi->selectbox.current_index)
2075 gi->selectbox.index = gi->selectbox.current_index;
2077 gadget_changed = FALSE;
2080 if (gi->type & GD_TYPE_TEXT_AREA)
2082 insertCharIntoTextArea(gi, '\n');
2084 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2088 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2090 gi->event.type = GD_EVENT_TEXT_RETURN;
2096 gi->callback_action(gi);
2098 else if (gi->type & GD_TYPE_TEXT_INPUT) /* only valid for text input */
2100 char text[MAX_GADGET_TEXTSIZE + 1];
2101 int text_length = strlen(gi->textinput.value);
2102 int cursor_pos = gi->textinput.cursor_position;
2103 char letter = getCharFromKey(key);
2104 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2105 letter >= '0' && letter <= '9' :
2108 if (legal_letter && text_length < gi->textinput.size)
2110 strcpy(text, gi->textinput.value);
2111 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2112 gi->textinput.value[cursor_pos] = letter;
2113 gi->textinput.cursor_position++;
2115 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2117 else if (key == KSYM_Left && cursor_pos > 0)
2119 gi->textinput.cursor_position--;
2121 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2123 else if (key == KSYM_Right && cursor_pos < text_length)
2125 gi->textinput.cursor_position++;
2127 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2129 else if (key == KSYM_BackSpace && cursor_pos > 0)
2131 strcpy(text, gi->textinput.value);
2132 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2133 gi->textinput.cursor_position--;
2135 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2137 else if (key == KSYM_Delete && cursor_pos < text_length)
2139 strcpy(text, gi->textinput.value);
2140 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2142 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2145 else if (gi->type & GD_TYPE_TEXT_AREA) /* only valid for text area */
2147 char text[MAX_GADGET_TEXTSIZE + 1];
2148 int text_length = strlen(gi->textarea.value);
2149 int area_ysize = gi->textarea.ysize;
2150 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2151 int cursor_y = gi->textarea.cursor_y;
2152 int cursor_pos = gi->textarea.cursor_position;
2153 char letter = getCharFromKey(key);
2154 boolean legal_letter = (letter != 0);
2158 insertCharIntoTextArea(gi, letter);
2160 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2162 else if (key == KSYM_Left && cursor_pos > 0)
2164 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2166 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2168 else if (key == KSYM_Right && cursor_pos < text_length)
2170 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2172 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2174 else if (key == KSYM_Up && cursor_y > 0)
2176 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2177 gi->textarea.cursor_x_preferred = cursor_x_pref;
2179 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2181 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2183 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2184 gi->textarea.cursor_x_preferred = cursor_x_pref;
2186 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2188 else if (key == KSYM_BackSpace && cursor_pos > 0)
2190 strcpy(text, gi->textarea.value);
2191 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2193 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2195 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2197 else if (key == KSYM_Delete && cursor_pos < text_length)
2199 strcpy(text, gi->textarea.value);
2200 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2202 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2205 else if (gi->type & GD_TYPE_SELECTBOX) /* only valid for selectbox */
2207 int index = gi->selectbox.current_index;
2208 int num_values = gi->selectbox.num_values;
2210 if (key == KSYM_Up && index > 0)
2212 gi->selectbox.current_index--;
2214 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2216 else if (key == KSYM_Down && index < num_values - 1)
2218 gi->selectbox.current_index++;
2220 DrawGadget(gi, DG_PRESSED, gi->direct_draw);