1 // ============================================================================
2 // Artsoft Retro-Game Library
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
7 // http://www.artsoft.org/
8 // ----------------------------------------------------------------------------
10 // ============================================================================
21 // values for DrawGadget()
22 #define DG_UNPRESSED 0
28 #define OPTION_TEXT_SELECTABLE(g, t) \
29 (t[0] != g->selectbox.char_unselectable && \
32 #define CURRENT_OPTION_SELECTABLE(g) \
33 OPTION_TEXT_SELECTABLE(g, g->selectbox.options[g->selectbox.current_index].text)
36 static struct GadgetInfo *gadget_list_first_entry = NULL;
37 static struct GadgetInfo *gadget_list_last_entry = NULL;
38 static struct GadgetInfo *last_info_gi = NULL;
39 static int next_free_gadget_id = 1;
40 static boolean gadget_id_wrapped = FALSE;
42 static void (*PlayGadgetSoundActivating)(void) = NULL;
43 static void (*PlayGadgetSoundSelecting)(void) = NULL;
46 void InitGadgetsSoundCallback(void (*activating_function)(void),
47 void (*selecting_function)(void))
49 PlayGadgetSoundActivating = activating_function;
50 PlayGadgetSoundSelecting = selecting_function;
53 static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
55 struct GadgetInfo *gi = gadget_list_first_entry;
57 while (gi && gi->id != id)
63 static int getNewGadgetID(void)
65 int id = next_free_gadget_id++;
67 if (next_free_gadget_id <= 0) // counter overrun
69 gadget_id_wrapped = TRUE; // now we must check each ID
70 next_free_gadget_id = 0;
73 if (gadget_id_wrapped)
75 next_free_gadget_id++;
76 while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
77 next_free_gadget_id++;
80 if (next_free_gadget_id <= 0) // cannot get new gadget id
81 Error(ERR_EXIT, "too much gadgets -- this should not happen");
86 static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my,
89 struct GadgetInfo *gi;
91 // first check for scrollbars in case of mouse scroll wheel button events
92 if (IS_WHEEL_BUTTON(button))
94 // real horizontal wheel or vertical wheel with modifier key pressed
95 boolean check_horizontal = (IS_WHEEL_BUTTON_HORIZONTAL(button) ||
96 GetKeyModState() & KMOD_Shift);
98 // check for the first active scrollbar directly under the mouse pointer
99 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
101 if (gi->mapped && gi->active &&
102 (gi->type & GD_TYPE_SCROLLBAR) &&
103 mx >= gi->x && mx < gi->x + gi->width &&
104 my >= gi->y && my < gi->y + gi->height)
108 // check for the first active scrollbar with matching mouse wheel area
109 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
111 if (gi->mapped && gi->active &&
112 ((gi->type & GD_TYPE_SCROLLBAR_HORIZONTAL && check_horizontal) ||
113 (gi->type & GD_TYPE_SCROLLBAR_VERTICAL && !check_horizontal)) &&
114 mx >= gi->wheelarea.x && mx < gi->wheelarea.x + gi->wheelarea.width &&
115 my >= gi->wheelarea.y && my < gi->wheelarea.y + gi->wheelarea.height)
119 // no active scrollbar found -- ignore this scroll wheel button event
123 // open selectboxes may overlap other active gadgets, so check them first
124 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
126 if (gi->mapped && gi->active &&
127 gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
128 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
129 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
133 // check all other gadgets
134 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
136 if (gi->mapped && gi->active &&
137 mx >= gi->x && mx < gi->x + gi->width &&
138 my >= gi->y && my < gi->y + gi->height)
145 static void setTextAreaCursorExt(struct GadgetInfo *gi, boolean set_cursor_pos)
147 char *text = gi->textarea.value;
148 int area_xsize = gi->textarea.xsize;
149 int area_ysize = gi->textarea.ysize;
150 int cursor_position = gi->textarea.cursor_position;
151 int cursor_x = gi->textarea.cursor_x;
152 int cursor_y = gi->textarea.cursor_y;
159 if (set_cursor_pos) // x/y => position
161 if (y == cursor_y && (x == cursor_x || (x < cursor_x && *text == '\n')))
164 else // position => x/y
166 if (pos == cursor_position)
170 if (x + 1 >= area_xsize || *text == '\n')
172 if (y + 1 >= area_ysize)
185 gi->textarea.cursor_x = x;
186 gi->textarea.cursor_y = y;
187 gi->textarea.cursor_x_preferred = x;
188 gi->textarea.cursor_position = pos;
191 static void setTextAreaCursorXY(struct GadgetInfo *gi, int x, int y)
193 gi->textarea.cursor_x = x;
194 gi->textarea.cursor_y = y;
196 setTextAreaCursorExt(gi, TRUE);
199 static void setTextAreaCursorPosition(struct GadgetInfo *gi, int pos)
201 gi->textarea.cursor_position = pos;
203 setTextAreaCursorExt(gi, FALSE);
206 static void default_callback_info(void *ptr)
211 static void default_callback_action(void *ptr)
216 static void DoGadgetCallbackAction(struct GadgetInfo *gi, boolean changed)
218 if (changed || gi->callback_action_always)
219 gi->callback_action(gi);
222 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
224 struct GadgetDesign *gd;
225 int state = (pressed ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
226 boolean redraw_selectbox = FALSE;
228 if (gi == NULL || gi->deactivated)
231 gd = (!gi->active ? &gi->alt_design[state] :
232 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
236 case GD_TYPE_NORMAL_BUTTON:
237 case GD_TYPE_CHECK_BUTTON:
238 case GD_TYPE_RADIO_BUTTON:
240 BlitBitmapOnBackground(gd->bitmap, drawto,
241 gd->x, gd->y, gi->width, gi->height,
244 if (gi->deco.design.bitmap)
246 // make sure that decoration does not overlap gadget border
247 int deco_x = gi->deco.x + (pressed ? gi->deco.xshift : 0);
248 int deco_y = gi->deco.y + (pressed ? gi->deco.yshift : 0);
249 int deco_width = MIN(gi->deco.width, gi->width - deco_x);
250 int deco_height = MIN(gi->deco.height, gi->height - deco_y);
253 BlitBitmapMasked(gi->deco.design.bitmap, drawto,
254 gi->deco.design.x, gi->deco.design.y,
255 deco_width, deco_height,
256 gi->x + deco_x, gi->y + deco_y);
258 BlitBitmap(gi->deco.design.bitmap, drawto,
259 gi->deco.design.x, gi->deco.design.y,
260 deco_width, deco_height,
261 gi->x + deco_x, gi->y + deco_y);
266 case GD_TYPE_TEXT_BUTTON:
269 int font_nr = (gi->active ? 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;
273 int text_size = strlen(gi->textbutton.value);
274 int text_start = (gi->width - text_size * font_width) / 2;
276 // left part of gadget
277 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
278 border_x, gi->height, gi->x, gi->y);
280 // middle part of gadget
281 for (i=0; i < gi->textbutton.size; i++)
282 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
283 font_width, gi->height,
284 gi->x + border_x + i * font_width, gi->y);
286 // right part of gadget
287 BlitBitmapOnBackground(gd->bitmap, drawto,
288 gd->x + gi->border.width - border_x, gd->y,
289 border_x, gi->height,
290 gi->x + gi->width - border_x, gi->y);
294 gi->x + text_start + (pressed ? gi->deco.xshift : 0),
295 gi->y + border_y + (pressed ? gi->deco.yshift : 0),
296 gi->textbutton.value, font_nr, BLIT_MASKED);
300 case GD_TYPE_TEXT_INPUT_ALPHANUMERIC:
301 case GD_TYPE_TEXT_INPUT_NUMERIC:
305 char cursor_string[2];
306 char text[MAX_GADGET_TEXTSIZE + 1];
307 int font_nr = (pressed ? gi->font_active : gi->font);
308 int font_width = getFontWidth(font_nr);
309 int border_x = gi->border.xsize;
310 int border_y = gi->border.ysize;
312 // left part of gadget
313 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
314 border_x, gi->height, gi->x, gi->y);
316 // middle part of gadget
317 for (i=0; i < gi->textinput.size + 1; i++)
318 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
319 font_width, gi->height,
320 gi->x + border_x + i * font_width, gi->y);
322 // right part of gadget
323 BlitBitmapOnBackground(gd->bitmap, drawto,
324 gd->x + gi->border.width - border_x, gd->y,
325 border_x, gi->height,
326 gi->x + gi->width - border_x, gi->y);
329 strcpy(text, gi->textinput.value);
334 gi->x + border_x, gi->y + border_y, text,
335 font_nr, BLIT_MASKED);
337 cursor_letter = gi->textinput.value[gi->textinput.cursor_position];
338 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
339 cursor_string[1] = '\0';
341 // draw cursor, if active
345 gi->textinput.cursor_position * font_width,
346 gi->y + border_y, cursor_string,
347 font_nr, BLIT_INVERSE);
351 case GD_TYPE_TEXT_AREA:
355 char cursor_string[2];
356 int font_nr = (pressed ? gi->font_active : gi->font);
357 int font_width = getFontWidth(font_nr);
358 int font_height = getFontHeight(font_nr);
359 int border_x = gi->border.xsize;
360 int border_y = gi->border.ysize;
361 int gd_height = 2 * border_y + font_height;
363 // top left part of gadget border
364 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
365 border_x, border_y, gi->x, gi->y);
367 // top middle part of gadget border
368 for (i=0; i < gi->textarea.xsize; i++)
369 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
370 font_width, border_y,
371 gi->x + border_x + i * font_width, gi->y);
373 // top right part of gadget border
374 BlitBitmapOnBackground(gd->bitmap, drawto,
375 gd->x + gi->border.width - border_x, gd->y,
377 gi->x + gi->width - border_x, gi->y);
379 // left and right part of gadget border for each row
380 for (i=0; i < gi->textarea.ysize; i++)
382 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
383 border_x, font_height,
384 gi->x, gi->y + border_y + i * font_height);
385 BlitBitmapOnBackground(gd->bitmap, drawto,
386 gd->x + gi->border.width - border_x,
388 border_x, font_height,
389 gi->x + gi->width - border_x,
390 gi->y + border_y + i * font_height);
393 // bottom left part of gadget border
394 BlitBitmapOnBackground(gd->bitmap, drawto,
395 gd->x, gd->y + gd_height - border_y,
397 gi->x, gi->y + gi->height - border_y);
399 // bottom middle part of gadget border
400 for (i=0; i < gi->textarea.xsize; i++)
401 BlitBitmapOnBackground(gd->bitmap, drawto,
403 gd->y + gd_height - border_y,
404 font_width, border_y,
405 gi->x + border_x + i * font_width,
406 gi->y + gi->height - border_y);
408 // bottom right part of gadget border
409 BlitBitmapOnBackground(gd->bitmap, drawto,
410 gd->x + gi->border.width - border_x,
411 gd->y + gd_height - border_y,
413 gi->x + gi->width - border_x,
414 gi->y + gi->height - border_y);
416 ClearRectangleOnBackground(drawto,
419 gi->width - 2 * border_x,
420 gi->height - 2 * border_y);
423 DrawTextBuffer(gi->x + border_x, gi->y + border_y, gi->textarea.value,
424 font_nr, gi->textarea.xsize, -1, gi->textarea.ysize, 0,
425 BLIT_ON_BACKGROUND, FALSE, FALSE, FALSE);
427 cursor_letter = gi->textarea.value[gi->textarea.cursor_position];
428 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
429 cursor_string[1] = '\0';
431 // draw cursor, if active
434 gi->x + border_x + gi->textarea.cursor_x * font_width,
435 gi->y + border_y + gi->textarea.cursor_y * font_height,
437 font_nr, BLIT_INVERSE);
441 case GD_TYPE_SELECTBOX:
444 char text[MAX_GADGET_TEXTSIZE + 1];
445 int font_nr_default = (pressed ? gi->font_active : gi->font);
446 int font_nr = font_nr_default;
447 int font_width = getFontWidth(font_nr);
448 int font_height = getFontHeight(font_nr);
449 int border_x = gi->border.xsize;
450 int border_y = gi->border.ysize;
451 int button = gi->border.xsize_selectbutton;
452 int width_inner = gi->border.width - button - 2 * border_x;
453 int box_width = gi->selectbox.width;
454 int box_height = gi->selectbox.height;
456 // left part of gadget
457 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
458 border_x, gi->height, gi->x, gi->y);
460 // middle part of gadget
461 for (i=0; i < gi->selectbox.size; i++)
462 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
463 font_width, gi->height,
464 gi->x + border_x + i * font_width, gi->y);
466 // button part of gadget
467 BlitBitmapOnBackground(gd->bitmap, drawto,
468 gd->x + border_x + width_inner, gd->y,
470 gi->x + gi->width - border_x - button, gi->y);
472 // right part of gadget
473 BlitBitmapOnBackground(gd->bitmap, drawto,
474 gd->x + gi->border.width - border_x, gd->y,
475 border_x, gi->height,
476 gi->x + gi->width - border_x, gi->y);
479 strncpy(text, gi->selectbox.options[gi->selectbox.index].text,
481 text[gi->selectbox.size] = '\0';
484 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
485 gi->font_unselectable);
488 DrawTextExt(drawto, gi->x + border_x, gi->y + border_y, text,
489 font_nr, BLIT_MASKED);
493 if (!gi->selectbox.open)
495 gi->selectbox.open = TRUE;
496 gi->selectbox.stay_open = FALSE;
497 gi->selectbox.current_index = gi->selectbox.index;
499 // save background under selectbox
500 BlitBitmap(drawto, gfx.field_save_buffer,
501 gi->selectbox.x, gi->selectbox.y,
502 gi->selectbox.width, gi->selectbox.height,
503 gi->selectbox.x, gi->selectbox.y);
506 // draw open selectbox
508 // top left part of gadget border
509 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
511 gi->selectbox.x, gi->selectbox.y);
513 // top middle part of gadget border
514 for (i=0; i < gi->selectbox.size; i++)
515 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
516 font_width, border_y,
517 gi->selectbox.x + border_x + i * font_width,
520 // top button part of gadget border
521 BlitBitmapOnBackground(gd->bitmap, drawto,
522 gd->x + border_x + width_inner, gd->y,
524 gi->selectbox.x + box_width -border_x -button,
527 // top right part of gadget border
528 BlitBitmapOnBackground(gd->bitmap, drawto,
529 gd->x + gi->border.width - border_x, gd->y,
531 gi->selectbox.x + box_width - border_x,
534 // left and right part of gadget border for each row
535 for (i=0; i < gi->selectbox.num_values; i++)
537 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
538 border_x, font_height,
540 gi->selectbox.y + border_y + i*font_height);
541 BlitBitmapOnBackground(gd->bitmap, drawto,
542 gd->x + gi->border.width - border_x,
544 border_x, font_height,
545 gi->selectbox.x + box_width - border_x,
546 gi->selectbox.y + border_y + i*font_height);
549 // bottom left part of gadget border
550 BlitBitmapOnBackground(gd->bitmap, drawto,
551 gd->x, gd->y + gi->height - border_y,
554 gi->selectbox.y + box_height - border_y);
556 // bottom middle part of gadget border
557 for (i=0; i < gi->selectbox.size; i++)
558 BlitBitmapOnBackground(gd->bitmap, drawto,
560 gd->y + gi->height - border_y,
561 font_width, border_y,
562 gi->selectbox.x + border_x + i * font_width,
563 gi->selectbox.y + box_height - border_y);
565 // bottom button part of gadget border
566 BlitBitmapOnBackground(gd->bitmap, drawto,
567 gd->x + border_x + width_inner,
568 gd->y + gi->height - border_y,
570 gi->selectbox.x + box_width -border_x -button,
571 gi->selectbox.y + box_height - border_y);
573 // bottom right part of gadget border
574 BlitBitmapOnBackground(gd->bitmap, drawto,
575 gd->x + gi->border.width - border_x,
576 gd->y + gi->height - border_y,
578 gi->selectbox.x + box_width - border_x,
579 gi->selectbox.y + box_height - border_y);
581 ClearRectangleOnBackground(drawto,
582 gi->selectbox.x + border_x,
583 gi->selectbox.y + border_y,
584 gi->selectbox.width - 2 * border_x,
585 gi->selectbox.height - 2 * border_y);
587 // selectbox text values
588 for (i=0; i < gi->selectbox.num_values; i++)
590 int mask_mode = BLIT_MASKED;
592 strncpy(text, gi->selectbox.options[i].text, gi->selectbox.size);
593 text[gi->selectbox.size] = '\0';
595 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
596 gi->font_unselectable);
598 if (i == gi->selectbox.current_index &&
599 OPTION_TEXT_SELECTABLE(gi, text))
601 FillRectangle(drawto,
602 gi->selectbox.x + border_x,
603 gi->selectbox.y + border_y + i * font_height,
604 gi->selectbox.width - 2 * border_x, font_height,
605 gi->selectbox.inverse_color);
607 // prevent use of cursor graphic by drawing at least two chars
609 text[gi->selectbox.size] = '\0';
611 mask_mode = BLIT_INVERSE;
615 gi->selectbox.x + border_x,
616 gi->selectbox.y + border_y + i * font_height, text,
620 redraw_selectbox = TRUE;
622 else if (gi->selectbox.open)
624 gi->selectbox.open = FALSE;
626 // restore background under selectbox
627 BlitBitmap(gfx.field_save_buffer, drawto,
628 gi->selectbox.x, gi->selectbox.y,
629 gi->selectbox.width, gi->selectbox.height,
630 gi->selectbox.x, gi->selectbox.y);
632 // redraw closed selectbox
633 DrawGadget(gi, FALSE, FALSE);
635 redraw_selectbox = TRUE;
640 case GD_TYPE_SCROLLBAR_VERTICAL:
644 int ypos = gi->y + gi->scrollbar.position;
645 int design_full = gi->width;
646 int design_body = design_full - 2 * gi->border.ysize;
647 int size_full = gi->scrollbar.size;
648 int size_body = size_full - 2 * gi->border.ysize;
649 int num_steps = size_body / design_body;
650 int step_size_remain = size_body - num_steps * design_body;
652 // clear scrollbar area
653 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
654 gi->width, gi->height);
656 // upper part of gadget
657 BlitBitmapOnBackground(gd->bitmap, drawto,
659 gi->width, gi->border.ysize,
662 // middle part of gadget
663 for (i=0; i < num_steps; i++)
664 BlitBitmapOnBackground(gd->bitmap, drawto,
665 gd->x, gd->y + gi->border.ysize,
666 gi->width, design_body,
668 ypos + gi->border.ysize + i * design_body);
670 // remaining middle part of gadget
671 if (step_size_remain > 0)
672 BlitBitmapOnBackground(gd->bitmap, drawto,
673 gd->x, gd->y + gi->border.ysize,
674 gi->width, step_size_remain,
676 ypos + gi->border.ysize
677 + num_steps * design_body);
679 // lower part of gadget
680 BlitBitmapOnBackground(gd->bitmap, drawto,
681 gd->x, gd->y + design_full - gi->border.ysize,
682 gi->width, gi->border.ysize,
683 xpos, ypos + size_full - gi->border.ysize);
687 case GD_TYPE_SCROLLBAR_HORIZONTAL:
690 int xpos = gi->x + gi->scrollbar.position;
692 int design_full = gi->height;
693 int design_body = design_full - 2 * gi->border.xsize;
694 int size_full = gi->scrollbar.size;
695 int size_body = size_full - 2 * gi->border.xsize;
696 int num_steps = size_body / design_body;
697 int step_size_remain = size_body - num_steps * design_body;
699 // clear scrollbar area
700 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
701 gi->width, gi->height);
703 // left part of gadget
704 BlitBitmapOnBackground(gd->bitmap, drawto,
706 gi->border.xsize, gi->height,
709 // middle part of gadget
710 for (i=0; i < num_steps; i++)
711 BlitBitmapOnBackground(gd->bitmap, drawto,
712 gd->x + gi->border.xsize, gd->y,
713 design_body, gi->height,
714 xpos + gi->border.xsize + i * design_body,
717 // remaining middle part of gadget
718 if (step_size_remain > 0)
719 BlitBitmapOnBackground(gd->bitmap, drawto,
720 gd->x + gi->border.xsize, gd->y,
721 step_size_remain, gi->height,
722 xpos + gi->border.xsize
723 + num_steps * design_body,
726 // right part of gadget
727 BlitBitmapOnBackground(gd->bitmap, drawto,
728 gd->x + design_full - gi->border.xsize, gd->y,
729 gi->border.xsize, gi->height,
730 xpos + size_full - gi->border.xsize, ypos);
738 // do not use direct gadget drawing anymore; this worked as a speed-up once,
739 // but would slow things down a lot now the screen is always fully redrawn
744 BlitBitmap(drawto, window,
745 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
747 if (gi->type == GD_TYPE_SELECTBOX && redraw_selectbox)
748 BlitBitmap(drawto, window,
749 gi->selectbox.x, gi->selectbox.y,
750 gi->selectbox.width, gi->selectbox.height,
751 gi->selectbox.x, gi->selectbox.y);
758 redraw_mask |= (IN_GFX_FIELD_FULL(x, y) ? REDRAW_FIELD :
759 IN_GFX_DOOR_1(x, y) ? REDRAW_DOOR_1 :
760 IN_GFX_DOOR_2(x, y) ? REDRAW_DOOR_2 :
761 IN_GFX_DOOR_3(x, y) ? REDRAW_DOOR_3 : REDRAW_ALL);
765 static int get_minimal_size_for_numeric_input(int minmax_value)
767 int min_size = 1; // value needs at least one digit
770 // add number of digits needed for absolute value
771 for (i = 10; i <= ABS(minmax_value); i *= 10)
774 // if min/max value is negative, add one digit for minus sign
775 if (minmax_value < 0)
781 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
785 if (gi == NULL || gi->deactivated)
788 while (tag != GDI_END)
793 gi->image_id = va_arg(ap, int);
797 gi->custom_id = va_arg(ap, int);
800 case GDI_CUSTOM_TYPE_ID:
801 gi->custom_type_id = va_arg(ap, int);
806 int max_textsize = MAX_INFO_TEXTSIZE;
807 char *text = va_arg(ap, char *);
810 strncpy(gi->info_text, text, max_textsize);
814 gi->info_text[max_textsize] = '\0';
819 gi->x = va_arg(ap, int);
823 gi->y = va_arg(ap, int);
827 gi->width = va_arg(ap, int);
831 gi->height = va_arg(ap, int);
835 gi->type = va_arg(ap, unsigned int);
839 gi->state = va_arg(ap, unsigned int);
843 gi->active = (boolean)va_arg(ap, int);
846 case GDI_DIRECT_DRAW:
847 gi->direct_draw = (boolean)va_arg(ap, int);
850 case GDI_CALLBACK_ACTION_ALWAYS:
851 gi->callback_action_always = (boolean)va_arg(ap, int);
855 gi->checked = (boolean)va_arg(ap, int);
859 gi->radio_nr = va_arg(ap, unsigned int);
862 case GDI_NUMBER_VALUE:
863 gi->textinput.number_value = va_arg(ap, int);
864 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
865 strcpy(gi->textinput.last_value, gi->textinput.value);
866 gi->textinput.cursor_position = strlen(gi->textinput.value);
870 gi->textinput.number_min = va_arg(ap, int);
871 if (gi->textinput.number_value < gi->textinput.number_min)
873 gi->textinput.number_value = gi->textinput.number_min;
874 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
875 strcpy(gi->textinput.last_value, gi->textinput.value);
880 gi->textinput.number_max = va_arg(ap, int);
881 if (gi->textinput.number_value > gi->textinput.number_max)
883 gi->textinput.number_value = gi->textinput.number_max;
884 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
885 strcpy(gi->textinput.last_value, gi->textinput.value);
891 int max_textsize = MAX_GADGET_TEXTSIZE;
893 if (gi->textinput.size)
894 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE);
896 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
897 strcpy(gi->textinput.last_value, gi->textinput.value);
899 gi->textinput.value[max_textsize] = '\0';
900 gi->textinput.cursor_position = strlen(gi->textinput.value);
902 // same tag also used for other gadget definitions
903 strcpy(gi->textbutton.value, gi->textinput.value);
904 strcpy(gi->textarea.value, gi->textinput.value);
905 strcpy(gi->textarea.last_value, gi->textinput.value);
911 int tag_value = va_arg(ap, int);
912 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE);
914 gi->textinput.size = max_textsize;
915 gi->textinput.value[max_textsize] = '\0';
916 strcpy(gi->textinput.last_value, gi->textinput.value);
918 // same tag also used for other gadget definitions
920 gi->textarea.size = max_textsize;
921 gi->textarea.value[max_textsize] = '\0';
922 strcpy(gi->textarea.last_value, gi->textinput.value);
924 gi->textbutton.size = max_textsize;
925 gi->textbutton.value[max_textsize] = '\0';
927 gi->selectbox.size = gi->textinput.size;
932 gi->font = va_arg(ap, int);
933 if (gi->font_active == 0)
934 gi->font_active = gi->font;
935 if (gi->font_unselectable == 0)
936 gi->font_unselectable = gi->font;
939 case GDI_TEXT_FONT_ACTIVE:
940 gi->font_active = va_arg(ap, int);
943 case GDI_TEXT_FONT_UNSELECTABLE:
944 gi->font_unselectable = va_arg(ap, int);
947 case GDI_SELECTBOX_OPTIONS:
948 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
951 case GDI_SELECTBOX_INDEX:
952 gi->selectbox.index = va_arg(ap, int);
955 case GDI_SELECTBOX_CHAR_UNSELECTABLE:
956 gi->selectbox.char_unselectable = (char)va_arg(ap, int);
959 case GDI_DESIGN_UNPRESSED:
960 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
961 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
962 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
965 case GDI_DESIGN_PRESSED:
966 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
967 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
968 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
971 case GDI_ALT_DESIGN_UNPRESSED:
972 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
973 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
974 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
977 case GDI_ALT_DESIGN_PRESSED:
978 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
979 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
980 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
983 case GDI_BORDER_SIZE:
984 gi->border.xsize = va_arg(ap, int);
985 gi->border.ysize = va_arg(ap, int);
988 case GDI_BORDER_SIZE_SELECTBUTTON:
989 gi->border.xsize_selectbutton = va_arg(ap, int);
992 case GDI_DESIGN_WIDTH:
993 gi->border.width = va_arg(ap, int);
996 case GDI_DECORATION_DESIGN:
997 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
998 gi->deco.design.x = va_arg(ap, int);
999 gi->deco.design.y = va_arg(ap, int);
1002 case GDI_DECORATION_POSITION:
1003 gi->deco.x = va_arg(ap, int);
1004 gi->deco.y = va_arg(ap, int);
1007 case GDI_DECORATION_SIZE:
1008 gi->deco.width = va_arg(ap, int);
1009 gi->deco.height = va_arg(ap, int);
1012 case GDI_DECORATION_SHIFTING:
1013 gi->deco.xshift = va_arg(ap, int);
1014 gi->deco.yshift = va_arg(ap, int);
1017 case GDI_DECORATION_MASKED:
1018 gi->deco.masked = (boolean)va_arg(ap, int);
1021 case GDI_EVENT_MASK:
1022 gi->event_mask = va_arg(ap, unsigned int);
1026 gi->drawing.area_xsize = va_arg(ap, int);
1027 gi->drawing.area_ysize = va_arg(ap, int);
1029 // determine dependent values for drawing area gadget, if needed
1030 if (gi->drawing.item_xsize != 0 && gi->drawing.item_ysize != 0)
1032 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1033 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1035 else if (gi->width != 0 && gi->height != 0)
1037 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
1038 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
1041 // same tag also used for other gadget definitions
1042 gi->textarea.xsize = gi->drawing.area_xsize;
1043 gi->textarea.ysize = gi->drawing.area_ysize;
1045 if (gi->type & GD_TYPE_TEXT_AREA) // force recalculation
1054 gi->drawing.item_xsize = va_arg(ap, int);
1055 gi->drawing.item_ysize = va_arg(ap, int);
1057 // determine dependent values for drawing area gadget, if needed
1058 if (gi->drawing.area_xsize != 0 && gi->drawing.area_ysize != 0)
1060 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1061 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1063 else if (gi->width != 0 && gi->height != 0)
1065 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
1066 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
1070 case GDI_SCROLLBAR_ITEMS_MAX:
1071 gi->scrollbar.items_max = va_arg(ap, int);
1074 case GDI_SCROLLBAR_ITEMS_VISIBLE:
1075 gi->scrollbar.items_visible = va_arg(ap, int);
1078 case GDI_SCROLLBAR_ITEM_POSITION:
1079 gi->scrollbar.item_position = va_arg(ap, int);
1082 case GDI_WHEEL_AREA_X:
1083 gi->wheelarea.x = va_arg(ap, int);
1086 case GDI_WHEEL_AREA_Y:
1087 gi->wheelarea.y = va_arg(ap, int);
1090 case GDI_WHEEL_AREA_WIDTH:
1091 gi->wheelarea.width = va_arg(ap, int);
1094 case GDI_WHEEL_AREA_HEIGHT:
1095 gi->wheelarea.height = va_arg(ap, int);
1098 case GDI_CALLBACK_INFO:
1099 gi->callback_info = va_arg(ap, gadget_function);
1102 case GDI_CALLBACK_ACTION:
1103 gi->callback_action = va_arg(ap, gadget_function);
1107 Error(ERR_EXIT, "HandleGadgetTags(): unknown tag %d", tag);
1110 tag = va_arg(ap, int); // read next tag
1113 gi->deactivated = FALSE;
1115 // check if gadget has undefined bitmaps
1116 if (gi->type != GD_TYPE_DRAWING_AREA &&
1117 (gi->design[GD_BUTTON_UNPRESSED].bitmap == NULL ||
1118 gi->design[GD_BUTTON_PRESSED].bitmap == NULL))
1119 gi->deactivated = TRUE;
1121 // check if gadget is placed off-screen
1122 if (gi->x < 0 || gi->y < 0)
1123 gi->deactivated = TRUE;
1125 // adjust gadget values in relation to other gadget values
1127 if (gi->type & GD_TYPE_TEXT_INPUT)
1129 int font_nr = gi->font_active;
1130 int font_width = getFontWidth(font_nr);
1131 int font_height = getFontHeight(font_nr);
1132 int border_xsize = gi->border.xsize;
1133 int border_ysize = gi->border.ysize;
1135 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1137 int number_min = gi->textinput.number_min;
1138 int number_max = gi->textinput.number_max;
1139 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1140 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1141 int min_size = MAX(min_size_min, min_size_max);
1143 // expand gadget text input size, if maximal value is too large
1144 if (gi->textinput.size < min_size)
1145 gi->textinput.size = min_size;
1148 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1149 gi->height = 2 * border_ysize + font_height;
1152 if (gi->type & GD_TYPE_SELECTBOX)
1154 int font_nr = gi->font_active;
1155 int font_width = getFontWidth(font_nr);
1156 int font_height = getFontHeight(font_nr);
1157 int border_xsize = gi->border.xsize;
1158 int border_ysize = gi->border.ysize;
1159 int button_size = gi->border.xsize_selectbutton;
1160 int bottom_screen_border = gfx.sy + gfx.sysize - font_height;
1164 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1165 gi->height = 2 * border_ysize + font_height;
1167 if (gi->selectbox.options == NULL)
1168 Error(ERR_EXIT, "selectbox gadget incomplete (missing options array)");
1170 gi->selectbox.num_values = 0;
1171 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1172 gi->selectbox.num_values++;
1174 // calculate values for open selectbox
1175 gi->selectbox.width = gi->width;
1176 gi->selectbox.height =
1177 2 * border_ysize + gi->selectbox.num_values * font_height;
1179 gi->selectbox.x = gi->x;
1180 gi->selectbox.y = gi->y + gi->height;
1181 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1182 gi->selectbox.y = gi->y - gi->selectbox.height;
1183 if (gi->selectbox.y < 0)
1184 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1186 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1187 src_x += font_width / 2;
1188 src_y += font_height / 2;
1190 // there may be esoteric cases with missing or too small font bitmap
1191 if (src_bitmap != NULL &&
1192 src_x < src_bitmap->width && src_y < src_bitmap->height)
1193 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1195 // always start with closed selectbox
1196 gi->selectbox.open = FALSE;
1199 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1201 struct GadgetTextInput *text = &gi->textinput;
1202 int value = text->number_value;
1204 text->number_value = (value < text->number_min ? text->number_min :
1205 value > text->number_max ? text->number_max :
1208 sprintf(text->value, "%d", text->number_value);
1211 if (gi->type & GD_TYPE_TEXT_BUTTON)
1213 int font_nr = gi->font_active;
1214 int font_width = getFontWidth(font_nr);
1215 int font_height = getFontHeight(font_nr);
1216 int border_xsize = gi->border.xsize;
1217 int border_ysize = gi->border.ysize;
1219 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1220 gi->height = 2 * border_ysize + font_height;
1223 if (gi->type & GD_TYPE_SCROLLBAR)
1225 struct GadgetScrollbar *gs = &gi->scrollbar;
1226 int scrollbar_size_cmp;
1228 if (gi->width == 0 || gi->height == 0 ||
1229 gs->items_max == 0 || gs->items_visible == 0)
1230 Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
1232 // calculate internal scrollbar values
1233 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1234 gi->width : gi->height);
1235 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1236 gi->height : gi->width);
1238 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1239 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1240 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1242 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1243 gs->position_max = gs->size_max - gs->size;
1244 gs->correction = gs->size_max / gs->items_max / 2;
1246 // finetuning for maximal right/bottom position
1247 if (gs->item_position == gs->items_max - gs->items_visible)
1248 gs->position = gs->position_max;
1251 if (gi->type & GD_TYPE_TEXT_AREA)
1253 int font_nr = gi->font_active;
1254 int font_width = getFontWidth(font_nr);
1255 int font_height = getFontHeight(font_nr);
1256 int border_xsize = gi->border.xsize;
1257 int border_ysize = gi->border.ysize;
1259 if (gi->width == 0 || gi->height == 0)
1261 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1262 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1266 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1267 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1272 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1276 va_start(ap, first_tag);
1277 HandleGadgetTags(gi, first_tag, ap);
1283 void RedrawGadget(struct GadgetInfo *gi)
1285 if (gi == NULL || gi->deactivated)
1289 DrawGadget(gi, gi->state, gi->direct_draw);
1292 struct GadgetInfo *CreateGadget(int first_tag, ...)
1294 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1297 // always start with reliable default values
1298 new_gadget->id = getNewGadgetID();
1299 new_gadget->image_id = -1;
1300 new_gadget->callback_info = default_callback_info;
1301 new_gadget->callback_action = default_callback_action;
1302 new_gadget->active = TRUE;
1303 new_gadget->direct_draw = TRUE;
1305 new_gadget->next = NULL;
1307 va_start(ap, first_tag);
1308 HandleGadgetTags(new_gadget, first_tag, ap);
1311 // insert new gadget into global gadget list
1312 if (gadget_list_last_entry)
1314 gadget_list_last_entry->next = new_gadget;
1315 gadget_list_last_entry = gadget_list_last_entry->next;
1318 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1323 void FreeGadget(struct GadgetInfo *gi)
1325 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1330 // prevent "last_info_gi" from pointing to memory that will be freed
1331 if (last_info_gi == gi)
1332 last_info_gi = NULL;
1334 while (gi_previous != NULL && gi_previous->next != gi)
1335 gi_previous = gi_previous->next;
1337 if (gi == gadget_list_first_entry)
1338 gadget_list_first_entry = gi->next;
1340 if (gi == gadget_list_last_entry)
1341 gadget_list_last_entry = gi_previous;
1343 if (gi_previous != NULL)
1344 gi_previous->next = gi->next;
1349 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1351 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1354 gi->textinput.number_value = atoi(gi->textinput.value);
1356 if (gi->textinput.number_value < gi->textinput.number_min)
1357 gi->textinput.number_value = gi->textinput.number_min;
1358 if (gi->textinput.number_value > gi->textinput.number_max)
1359 gi->textinput.number_value = gi->textinput.number_max;
1361 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1363 if (gi->textinput.cursor_position < 0)
1364 gi->textinput.cursor_position = 0;
1365 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1366 gi->textinput.cursor_position = strlen(gi->textinput.value);
1369 // global pointer to gadget actually in use (when mouse button pressed)
1370 static struct GadgetInfo *last_gi = NULL;
1372 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1374 if (gi == NULL || gi->deactivated || gi->mapped)
1380 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1383 void MapGadget(struct GadgetInfo *gi)
1385 MapGadgetExt(gi, TRUE);
1388 void UnmapGadget(struct GadgetInfo *gi)
1390 if (gi == NULL || gi->deactivated || !gi->mapped)
1399 #define MAX_NUM_GADGETS 1024
1400 #define MULTIMAP_UNMAP (1 << 0)
1401 #define MULTIMAP_REMAP (1 << 1)
1402 #define MULTIMAP_REDRAW (1 << 2)
1403 #define MULTIMAP_PLAYFIELD (1 << 3)
1404 #define MULTIMAP_DOOR_1 (1 << 4)
1405 #define MULTIMAP_DOOR_2 (1 << 5)
1406 #define MULTIMAP_DOOR_3 (1 << 6)
1407 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1412 static void MultiMapGadgets(int mode)
1414 struct GadgetInfo *gi = gadget_list_first_entry;
1415 static boolean map_state[MAX_NUM_GADGETS];
1423 if ((mode & MULTIMAP_PLAYFIELD && IN_GFX_FIELD_FULL(x, y)) ||
1424 (mode & MULTIMAP_DOOR_1 && IN_GFX_DOOR_1(x, y)) ||
1425 (mode & MULTIMAP_DOOR_2 && IN_GFX_DOOR_2(x, y)) ||
1426 (mode & MULTIMAP_DOOR_3 && IN_GFX_DOOR_3(x, y)) ||
1427 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1429 if (mode & MULTIMAP_UNMAP)
1431 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1436 if (map_state[map_count++ % MAX_NUM_GADGETS])
1437 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1445 void UnmapAllGadgets(void)
1447 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1450 void RemapAllGadgets(void)
1452 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1455 boolean anyTextInputGadgetActive(void)
1457 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1460 boolean anyTextAreaGadgetActive(void)
1462 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1465 boolean anySelectboxGadgetActive(void)
1467 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1470 boolean anyScrollbarGadgetActive(void)
1472 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1475 boolean anyTextGadgetActive(void)
1477 return (anyTextInputGadgetActive() ||
1478 anyTextAreaGadgetActive() ||
1479 anySelectboxGadgetActive());
1482 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1484 return (gi != NULL &&
1485 gi->type & GD_TYPE_SELECTBOX &&
1486 mx >= gi->x && mx < gi->x + gi->width &&
1487 my >= gi->y && my < gi->y + gi->height);
1490 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1492 return (gi != NULL &&
1493 gi->type & GD_TYPE_SELECTBOX &&
1494 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1495 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1498 void ClickOnGadget(struct GadgetInfo *gi, int button)
1500 if (gi == NULL || gi->deactivated || !gi->mapped)
1503 // simulate releasing mouse button over last gadget, if still pressed
1505 HandleGadgets(-1, -1, 0);
1510 // set cursor position to the end of the text for text input gadgets
1511 if (gi->type & GD_TYPE_TEXT_INPUT)
1512 x = gi->x + gi->width - 1;
1514 // simulate pressing mouse button over specified gadget
1515 HandleGadgets(x, y, button);
1517 // simulate releasing mouse button over specified gadget
1518 HandleGadgets(x, y, 0);
1521 boolean HandleGadgets(int mx, int my, int button)
1523 static unsigned int pressed_delay = 0;
1524 static unsigned int pressed_delay_value = GADGET_FRAME_DELAY;
1525 static int last_button = 0;
1526 static int last_mx = 0, last_my = 0;
1527 static int pressed_mx = 0, pressed_my = 0;
1528 static boolean keep_selectbox_open = FALSE;
1529 static boolean gadget_stopped = FALSE;
1530 int scrollbar_mouse_pos = 0;
1531 struct GadgetInfo *new_gi, *gi;
1532 boolean press_event;
1533 boolean release_event;
1534 boolean mouse_moving;
1535 boolean mouse_inside_select_line;
1536 boolean mouse_inside_select_area;
1537 boolean mouse_released_where_pressed;
1538 boolean gadget_pressed;
1539 boolean gadget_pressed_repeated;
1540 boolean gadget_pressed_off_borders;
1541 boolean gadget_pressed_inside_select_line;
1542 boolean gadget_pressed_delay_reached;
1543 boolean gadget_moving;
1544 boolean gadget_moving_inside;
1545 boolean gadget_moving_off_borders;
1546 boolean gadget_draggable;
1547 boolean gadget_dragging;
1548 boolean gadget_released;
1549 boolean gadget_released_inside;
1550 boolean gadget_released_inside_select_area;
1551 boolean gadget_released_off_borders;
1552 boolean changed_position = FALSE;
1554 // check if there are any gadgets defined
1555 if (gadget_list_first_entry == NULL)
1558 // simulated release of mouse button over last gadget
1559 if (mx == -1 && my == -1 && button == 0)
1565 // check which gadget is under the mouse pointer
1566 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1568 // check if button state has changed since last invocation
1569 press_event = (button != 0 && last_button == 0);
1570 release_event = (button == 0 && last_button != 0);
1571 last_button = button;
1573 // check if mouse has been moved since last invocation
1574 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1578 if (press_event && new_gi != last_gi)
1584 mouse_released_where_pressed =
1585 (release_event && mx == pressed_mx && my == pressed_my);
1587 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1588 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1590 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1592 gadget_pressed_inside_select_line =
1593 (press_event && new_gi != NULL &&
1594 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1595 insideSelectboxLine(new_gi, mx, my));
1597 // if mouse button pressed outside text or selectbox gadget, deactivate it
1598 if (anyTextGadgetActive() &&
1599 (gadget_pressed_off_borders ||
1600 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1602 struct GadgetInfo *gi = last_gi;
1603 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
1605 // check if text gadget has changed its value
1606 if (gi->type & GD_TYPE_TEXT_INPUT)
1608 CheckRangeOfNumericInputGadget(gi);
1610 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1611 strcpy(gi->textinput.last_value, gi->textinput.value);
1613 gadget_changed = FALSE;
1616 // selectbox does not change its value when closed by clicking outside
1617 if (gi->type & GD_TYPE_SELECTBOX)
1618 gadget_changed = FALSE;
1620 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1622 gi->event.type = GD_EVENT_TEXT_LEAVING;
1624 if (!(gi->type & GD_TYPE_SELECTBOX))
1625 DoGadgetCallbackAction(gi, gadget_changed);
1629 if (gadget_pressed_inside_select_line)
1636 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1637 gadget_pressed_repeated =
1638 (button != 0 && last_gi != NULL && new_gi == last_gi);
1640 gadget_pressed_delay_reached =
1641 DelayReached(&pressed_delay, pressed_delay_value);
1643 gadget_released = (release_event && last_gi != NULL);
1644 gadget_released_inside = (gadget_released && new_gi == last_gi);
1645 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1647 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1648 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1649 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1651 // when handling selectbox, set additional state values
1652 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1653 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1655 gadget_released_inside_select_area = FALSE;
1657 // setting state for handling over-large selectbox
1658 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1659 keep_selectbox_open = FALSE;
1661 // if new gadget pressed, store this gadget
1665 // 'gi' is actually handled gadget
1668 // if gadget is scrollbar, choose mouse position value
1669 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1670 scrollbar_mouse_pos =
1671 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1673 // if mouse button released, no gadget needs to be handled anymore
1674 if (gadget_released)
1676 if (gi->type & GD_TYPE_SELECTBOX &&
1677 (keep_selectbox_open ||
1678 mouse_released_where_pressed ||
1679 !gadget_released_inside_select_area ||
1680 !CURRENT_OPTION_SELECTABLE(gi))) // selectbox stays open
1682 gi->selectbox.stay_open = TRUE;
1686 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1687 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
1691 // modify event position values even if no gadget is pressed
1692 if (button == 0 && !release_event)
1695 // if new gadget or if no gadget was pressed, release stopped processing
1696 if (gadget_pressed || new_gi == NULL)
1697 gadget_stopped = FALSE;
1699 // if gadget was stopped while being handled, stop gadget processing here
1705 int last_x = gi->event.x;
1706 int last_y = gi->event.y;
1707 int last_mx = gi->event.mx;
1708 int last_my = gi->event.my;
1710 gi->event.x = gi->event.mx = mx - gi->x;
1711 gi->event.y = gi->event.my = my - gi->y;
1713 if (gi->type == GD_TYPE_DRAWING_AREA)
1715 gi->event.x /= gi->drawing.item_xsize;
1716 gi->event.y /= gi->drawing.item_ysize;
1718 if (last_x != gi->event.x || last_y != gi->event.y ||
1719 ((last_mx != gi->event.mx || last_my != gi->event.my) &&
1720 gi->event_mask & GD_EVENT_PIXEL_PRECISE))
1721 changed_position = TRUE;
1723 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1725 int old_cursor_position = gi->textinput.cursor_position;
1727 // if mouse button pressed inside activated text gadget, set cursor
1728 gi->textinput.cursor_position =
1729 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1731 if (gi->textinput.cursor_position < 0)
1732 gi->textinput.cursor_position = 0;
1733 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1734 gi->textinput.cursor_position = strlen(gi->textinput.value);
1736 if (gi->textinput.cursor_position != old_cursor_position)
1737 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1740 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1742 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1744 int old_cursor_position = gi->textarea.cursor_position;
1745 int x = (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1746 int y = (my - gi->y - gi->border.ysize) / getFontHeight(gi->font);
1748 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1749 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1751 setTextAreaCursorXY(gi, x, y);
1753 if (gi->textarea.cursor_position != old_cursor_position)
1754 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1757 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1759 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1760 !keep_selectbox_open)
1762 int old_index = gi->selectbox.current_index;
1764 // if mouse moving inside activated selectbox, select value
1765 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1766 gi->selectbox.current_index =
1767 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1769 if (gi->selectbox.current_index < 0)
1770 gi->selectbox.current_index = 0;
1771 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1772 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1774 if (gi->selectbox.current_index != old_index)
1775 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1779 // handle gadget popup info text
1780 if (last_info_gi != new_gi ||
1781 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
1783 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
1785 new_gi->event.type = GD_EVENT_INFO_ENTERING;
1786 new_gi->callback_info(new_gi);
1788 else if (last_info_gi != NULL && last_info_gi->mapped)
1790 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
1791 last_info_gi->callback_info(last_info_gi);
1794 last_info_gi = new_gi;
1797 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
1799 // reset drag position for newly pressed scrollbar to "not dragging"
1800 if (gadget_pressed && gadget_draggable)
1801 gi->scrollbar.drag_position = -1;
1803 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
1805 // clicking next to a scrollbar to move it is not considered "moving"
1806 if (gadget_draggable && !gadget_dragging)
1807 gadget_moving = FALSE;
1809 // when leaving scrollbar area when jump-scrolling, stop gadget processing
1810 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
1811 gadget_stopped = TRUE;
1813 if ((gadget_pressed) ||
1814 (gadget_pressed_repeated && gadget_pressed_delay_reached))
1816 if (gadget_pressed) // gadget pressed the first time
1818 // initialize delay counter
1819 DelayReached(&pressed_delay, 0);
1821 // start gadget delay with longer delay after first click on gadget
1822 pressed_delay_value = GADGET_FRAME_DELAY_FIRST;
1824 else // gadget hold pressed for some time
1826 // after first repeated gadget click, continue with shorter delay value
1827 pressed_delay_value = GADGET_FRAME_DELAY;
1830 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
1832 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1833 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1834 int slider_start = gpos + gi->scrollbar.position;
1835 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1836 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1838 if (IS_WHEEL_BUTTON(button) || !inside_slider)
1840 // click scrollbar one scrollbar length up/left or down/right
1842 struct GadgetScrollbar *gs = &gi->scrollbar;
1843 int old_item_position = gs->item_position;
1844 int item_steps = gs->items_visible - 1;
1845 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
1847 if (IS_WHEEL_BUTTON(button))
1849 boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
1851 item_steps = (scroll_single_step ? 1 : wheel_steps);
1852 item_direction = (button == MB_WHEEL_UP ||
1853 button == MB_WHEEL_LEFT ? -1 : +1);
1856 changed_position = FALSE;
1858 gs->item_position += item_steps * item_direction;
1860 if (gs->item_position < 0)
1861 gs->item_position = 0;
1862 else if (gs->item_position > gs->items_max - gs->items_visible)
1863 gs->item_position = gs->items_max - gs->items_visible;
1865 if (old_item_position != gs->item_position)
1867 gi->event.item_position = gs->item_position;
1868 changed_position = TRUE;
1871 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
1874 gi->state = GD_BUTTON_UNPRESSED;
1875 gi->event.type = GD_EVENT_MOVING;
1876 gi->event.off_borders = FALSE;
1878 if (gi->event_mask & GD_EVENT_MOVING)
1879 DoGadgetCallbackAction(gi, changed_position);
1885 // don't handle this scrollbar anymore when mouse position reached
1886 if (gadget_pressed_repeated)
1888 gadget_stopped = TRUE;
1898 PlayGadgetSoundActivating();
1900 if (gi->type == GD_TYPE_CHECK_BUTTON)
1902 gi->checked = !gi->checked;
1904 else if (gi->type == GD_TYPE_RADIO_BUTTON)
1906 struct GadgetInfo *rgi = gadget_list_first_entry;
1911 rgi->type == GD_TYPE_RADIO_BUTTON &&
1912 rgi->radio_nr == gi->radio_nr &&
1915 rgi->checked = FALSE;
1916 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
1924 else if (gi->type & GD_TYPE_SCROLLBAR)
1926 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1927 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1928 int slider_start = gpos + gi->scrollbar.position;
1929 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1930 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1932 if (!IS_WHEEL_BUTTON(button) && inside_slider)
1934 // start dragging scrollbar
1935 gi->scrollbar.drag_position =
1936 scrollbar_mouse_pos - gi->scrollbar.position;
1939 else if (gi->type & GD_TYPE_SELECTBOX)
1941 // keep selectbox open in case of over-large selectbox
1942 keep_selectbox_open = (mouse_inside_select_line &&
1943 mouse_inside_select_area);
1946 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1948 gi->state = GD_BUTTON_PRESSED;
1949 gi->event.type = GD_EVENT_PRESSED;
1950 gi->event.button = button;
1951 gi->event.off_borders = FALSE;
1953 if (gi->event_mask & GD_EVENT_PRESSED)
1954 gi->callback_action(gi);
1957 if (gadget_pressed_repeated)
1959 gi->event.type = GD_EVENT_PRESSED;
1961 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
1962 gi->callback_action(gi);
1967 if (gi->type & GD_TYPE_BUTTON)
1969 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
1970 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1971 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
1972 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1974 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
1976 int old_index = gi->selectbox.current_index;
1978 // if mouse moving inside activated selectbox, select value
1979 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1980 gi->selectbox.current_index =
1981 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1983 if (gi->selectbox.current_index < 0)
1984 gi->selectbox.current_index = 0;
1985 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1986 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1988 if (gi->selectbox.current_index != old_index)
1989 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1991 else if (gi->type & GD_TYPE_SCROLLBAR)
1993 struct GadgetScrollbar *gs = &gi->scrollbar;
1994 int old_item_position = gs->item_position;
1996 gs->position = scrollbar_mouse_pos - gs->drag_position;
1998 // make sure to always precisely reach end positions when dragging
1999 if (gs->position <= 0)
2002 gs->item_position = 0;
2004 else if (gs->position >= gs->position_max)
2006 gs->position = gs->position_max;
2007 gs->item_position = gs->items_max - gs->items_visible;
2012 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
2015 if (gs->item_position < 0)
2016 gs->item_position = 0;
2017 if (gs->item_position > gs->items_max - 1)
2018 gs->item_position = gs->items_max - 1;
2020 if (old_item_position != gs->item_position)
2022 gi->event.item_position = gs->item_position;
2023 changed_position = TRUE;
2026 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2029 gi->state = (gadget_moving_inside || gadget_draggable ?
2030 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
2031 gi->event.type = GD_EVENT_MOVING;
2032 gi->event.off_borders = gadget_moving_off_borders;
2034 if (gi->event_mask & GD_EVENT_MOVING &&
2035 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
2036 DoGadgetCallbackAction(gi, changed_position);
2039 if (gadget_released_inside)
2041 boolean deactivate_gadget = TRUE;
2042 boolean gadget_changed = TRUE;
2044 if (gi->type & GD_TYPE_SELECTBOX)
2046 if (keep_selectbox_open ||
2047 mouse_released_where_pressed ||
2048 !gadget_released_inside_select_area ||
2049 !CURRENT_OPTION_SELECTABLE(gi)) // selectbox stays open
2051 deactivate_gadget = FALSE;
2052 gadget_changed = FALSE;
2054 else if (gi->selectbox.index != gi->selectbox.current_index)
2055 gi->selectbox.index = gi->selectbox.current_index;
2057 gadget_changed = FALSE;
2060 if (deactivate_gadget &&
2061 !(gi->type & GD_TYPE_TEXT_INPUT ||
2062 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
2063 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2065 gi->state = GD_BUTTON_UNPRESSED;
2066 gi->event.type = GD_EVENT_RELEASED;
2068 if ((gi->event_mask & GD_EVENT_RELEASED))
2069 DoGadgetCallbackAction(gi, gadget_changed);
2072 if (gadget_released_off_borders)
2074 if (gi->type & GD_TYPE_SCROLLBAR)
2075 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2077 gi->state = GD_BUTTON_UNPRESSED;
2078 gi->event.type = GD_EVENT_RELEASED;
2080 if (gi->event_mask & GD_EVENT_RELEASED &&
2081 gi->event_mask & GD_EVENT_OFF_BORDERS)
2082 gi->callback_action(gi);
2085 // handle gadgets unmapped/mapped between pressing and releasing
2086 if (release_event && !gadget_released && new_gi)
2087 new_gi->state = GD_BUTTON_UNPRESSED;
2089 return (gadget_pressed || gadget_pressed_repeated ||
2090 gadget_released || gadget_moving);
2093 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
2095 char text[MAX_GADGET_TEXTSIZE + 1];
2096 int cursor_position = gi->textarea.cursor_position;
2098 if (strlen(gi->textarea.value) >= MAX_GADGET_TEXTSIZE) // no space left
2101 strcpy(text, gi->textarea.value);
2102 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
2103 gi->textarea.value[cursor_position] = c;
2105 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2108 boolean HandleGadgetsKeyInput(Key key)
2110 struct GadgetInfo *gi = last_gi;
2112 if (gi == NULL || gi->deactivated || !gi->mapped ||
2113 !(gi->type & GD_TYPE_TEXT_INPUT ||
2114 gi->type & GD_TYPE_TEXT_AREA ||
2115 gi->type & GD_TYPE_SELECTBOX))
2118 if (key == KSYM_Escape)
2120 if (anyTextGadgetActive())
2122 // restore previous text (before activating text gadget)
2123 if (gi->type & GD_TYPE_TEXT_INPUT)
2124 strcpy(gi->textinput.value, gi->textinput.last_value);
2126 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2133 else if (key == KSYM_Return) // valid for both text input and selectbox
2135 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_RETURN) != 0);
2137 if (gi->type & GD_TYPE_TEXT_INPUT)
2139 CheckRangeOfNumericInputGadget(gi);
2141 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2142 strcpy(gi->textinput.last_value, gi->textinput.value);
2144 gadget_changed = FALSE;
2148 else if (gi->type & GD_TYPE_SELECTBOX)
2150 if (gi->selectbox.index != gi->selectbox.current_index)
2151 gi->selectbox.index = gi->selectbox.current_index;
2153 gadget_changed = FALSE;
2156 if (gi->type & GD_TYPE_TEXT_AREA)
2158 insertCharIntoTextArea(gi, '\n');
2160 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2164 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2166 gi->event.type = GD_EVENT_TEXT_RETURN;
2171 DoGadgetCallbackAction(gi, gadget_changed);
2173 else if (gi->type & GD_TYPE_TEXT_INPUT) // only valid for text input
2175 char text[MAX_GADGET_TEXTSIZE + 1];
2176 int text_length = strlen(gi->textinput.value);
2177 int cursor_pos = gi->textinput.cursor_position;
2178 char letter = getCharFromKey(key);
2179 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2180 letter >= '0' && letter <= '9' :
2183 if (legal_letter && text_length < gi->textinput.size)
2185 strcpy(text, gi->textinput.value);
2186 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2187 gi->textinput.value[cursor_pos] = letter;
2188 gi->textinput.cursor_position++;
2190 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2192 else if (key == KSYM_Left && cursor_pos > 0)
2194 gi->textinput.cursor_position--;
2196 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2198 else if (key == KSYM_Right && cursor_pos < text_length)
2200 gi->textinput.cursor_position++;
2202 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2204 else if (key == KSYM_BackSpace && cursor_pos > 0)
2206 strcpy(text, gi->textinput.value);
2207 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2208 gi->textinput.cursor_position--;
2210 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2212 else if (key == KSYM_Delete && cursor_pos < text_length)
2214 strcpy(text, gi->textinput.value);
2215 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2217 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2220 else if (gi->type & GD_TYPE_TEXT_AREA) // only valid for text area
2222 char text[MAX_GADGET_TEXTSIZE + 1];
2223 int text_length = strlen(gi->textarea.value);
2224 int area_ysize = gi->textarea.ysize;
2225 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2226 int cursor_y = gi->textarea.cursor_y;
2227 int cursor_pos = gi->textarea.cursor_position;
2228 char letter = getCharFromKey(key);
2229 boolean legal_letter = (letter != 0);
2233 insertCharIntoTextArea(gi, letter);
2235 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2237 else if (key == KSYM_Left && cursor_pos > 0)
2239 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2241 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2243 else if (key == KSYM_Right && cursor_pos < text_length)
2245 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2247 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2249 else if (key == KSYM_Up && cursor_y > 0)
2251 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2252 gi->textarea.cursor_x_preferred = cursor_x_pref;
2254 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2256 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2258 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2259 gi->textarea.cursor_x_preferred = cursor_x_pref;
2261 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2263 else if (key == KSYM_BackSpace && cursor_pos > 0)
2265 strcpy(text, gi->textarea.value);
2266 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2268 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2270 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2272 else if (key == KSYM_Delete && cursor_pos < text_length)
2274 strcpy(text, gi->textarea.value);
2275 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2277 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2280 else if (gi->type & GD_TYPE_SELECTBOX) // only valid for selectbox
2282 int index = gi->selectbox.current_index;
2283 int num_values = gi->selectbox.num_values;
2285 if (key == KSYM_Up && index > 0)
2287 gi->selectbox.current_index--;
2289 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2291 else if (key == KSYM_Down && index < num_values - 1)
2293 gi->selectbox.current_index++;
2295 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2302 void DumpGadgetIdentifiers(void)
2304 struct GadgetInfo *gi;
2306 Print("Gadgets on current screen:\n");
2308 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2310 if (gi->mapped && gi->image_id != -1)
2312 char *token = getTokenFromImageID(gi->image_id);
2313 char *prefix = "gfx.";
2315 if (strPrefix(token, prefix))
2316 token = &token[strlen(prefix)];
2318 Print("- '%s'\n", token);
2325 boolean DoGadgetAction(int image_id)
2327 struct GadgetInfo *gi;
2329 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2331 if (gi->mapped && gi->image_id == image_id)
2333 gi->callback_action(gi);