1 /***********************************************************
2 * Artsoft Retro-Game Library *
3 *----------------------------------------------------------*
4 * (c) 1994-2002 Artsoft Entertainment *
6 * Detmolder Strasse 189 *
9 * e-mail: info@artsoft.org *
10 *----------------------------------------------------------*
12 ***********************************************************/
22 /* values for DrawGadget() */
23 #define DG_UNPRESSED 0
29 static struct GadgetInfo *gadget_list_first_entry = NULL;
30 static struct GadgetInfo *gadget_list_last_entry = NULL;
31 static struct GadgetInfo *last_info_gi = NULL;
32 static int next_free_gadget_id = 1;
33 static boolean gadget_id_wrapped = FALSE;
35 static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
37 struct GadgetInfo *gi = gadget_list_first_entry;
39 while (gi && gi->id != id)
45 static int getNewGadgetID()
47 int id = next_free_gadget_id++;
49 if (next_free_gadget_id <= 0) /* counter overrun */
51 gadget_id_wrapped = TRUE; /* now we must check each ID */
52 next_free_gadget_id = 0;
55 if (gadget_id_wrapped)
57 next_free_gadget_id++;
58 while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
59 next_free_gadget_id++;
62 if (next_free_gadget_id <= 0) /* cannot get new gadget id */
63 Error(ERR_EXIT, "too much gadgets -- this should not happen");
68 static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my,
71 struct GadgetInfo *gi;
73 /* first check for scrollbars in case of mouse scroll wheel button events */
74 if (IS_WHEEL_BUTTON(button))
76 /* real horizontal wheel or vertical wheel with modifier key pressed */
77 boolean check_horizontal = (IS_WHEEL_BUTTON_HORIZONTAL(button) ||
78 GetKeyModState() & KMOD_Shift);
80 /* check for the first active scrollbar with matching mouse wheel area */
81 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
83 if (gi->mapped && gi->active &&
84 ((gi->type & GD_TYPE_SCROLLBAR_HORIZONTAL && check_horizontal) ||
85 (gi->type & GD_TYPE_SCROLLBAR_VERTICAL && !check_horizontal)) &&
86 mx >= gi->wheelarea.x && mx < gi->wheelarea.x + gi->wheelarea.width &&
87 my >= gi->wheelarea.y && my < gi->wheelarea.y + gi->wheelarea.height)
91 /* no active scrollbar found -- ignore this scroll wheel button event */
95 /* open selectboxes may overlap other active gadgets, so check them first */
96 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
98 if (gi->mapped && gi->active &&
99 gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
100 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
101 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
105 /* check all other gadgets */
106 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
108 if (gi->mapped && gi->active &&
109 mx >= gi->x && mx < gi->x + gi->width &&
110 my >= gi->y && my < gi->y + gi->height)
117 static void setTextAreaCursorExt(struct GadgetInfo *gi, boolean set_cursor_pos)
119 char *text = gi->textarea.value;
120 int area_xsize = gi->textarea.xsize;
121 int area_ysize = gi->textarea.ysize;
122 int cursor_position = gi->textarea.cursor_position;
123 int cursor_x = gi->textarea.cursor_x;
124 int cursor_y = gi->textarea.cursor_y;
131 if (set_cursor_pos) /* x/y => position */
133 if (y == cursor_y && (x == cursor_x || (x < cursor_x && *text == '\n')))
136 else /* position => x/y */
138 if (pos == cursor_position)
142 if (x + 1 >= area_xsize || *text == '\n')
144 if (y + 1 >= area_ysize)
157 gi->textarea.cursor_x = x;
158 gi->textarea.cursor_y = y;
159 gi->textarea.cursor_x_preferred = x;
160 gi->textarea.cursor_position = pos;
163 static void setTextAreaCursorXY(struct GadgetInfo *gi, int x, int y)
165 gi->textarea.cursor_x = x;
166 gi->textarea.cursor_y = y;
168 setTextAreaCursorExt(gi, TRUE);
171 static void setTextAreaCursorPosition(struct GadgetInfo *gi, int pos)
173 gi->textarea.cursor_position = pos;
175 setTextAreaCursorExt(gi, FALSE);
178 static void default_callback_info(void *ptr)
183 static void default_callback_action(void *ptr)
188 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
190 struct GadgetDesign *gd;
191 int state = (pressed ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
192 boolean redraw_selectbox = FALSE;
197 gd = (!gi->active ? &gi->alt_design[state] :
198 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
202 case GD_TYPE_NORMAL_BUTTON:
203 case GD_TYPE_CHECK_BUTTON:
204 case GD_TYPE_RADIO_BUTTON:
205 BlitBitmapOnBackground(gd->bitmap, drawto,
206 gd->x, gd->y, gi->width, gi->height,
208 if (gi->deco.design.bitmap)
209 BlitBitmap(gi->deco.design.bitmap, drawto,
210 gi->deco.design.x, gi->deco.design.y,
211 gi->deco.width, gi->deco.height,
212 gi->x + gi->deco.x + (pressed ? gi->deco.xshift : 0),
213 gi->y + gi->deco.y + (pressed ? gi->deco.yshift : 0));
216 case GD_TYPE_TEXT_BUTTON:
219 int font_nr = (gi->active ? gi->font_active : gi->font);
220 int font_width = getFontWidth(font_nr);
221 int border_x = gi->border.xsize;
222 int border_y = gi->border.ysize;
223 int text_size = strlen(gi->textbutton.value);
224 int text_start = (gi->width - text_size * font_width) / 2;
226 /* left part of gadget */
227 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
228 border_x, gi->height, gi->x, gi->y);
230 /* middle part of gadget */
231 for (i=0; i < gi->textbutton.size; i++)
232 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
233 font_width, gi->height,
234 gi->x + border_x + i * font_width, gi->y);
236 /* right part of gadget */
237 BlitBitmapOnBackground(gd->bitmap, drawto,
238 gd->x + gi->border.width - border_x, gd->y,
239 border_x, gi->height,
240 gi->x + gi->width - border_x, gi->y);
242 /* gadget text value */
244 gi->x + text_start + (pressed ? gi->deco.xshift : 0),
245 gi->y + border_y + (pressed ? gi->deco.yshift : 0),
246 gi->textbutton.value, font_nr, BLIT_MASKED);
250 case GD_TYPE_TEXT_INPUT_ALPHANUMERIC:
251 case GD_TYPE_TEXT_INPUT_NUMERIC:
255 char cursor_string[2];
256 char text[MAX_GADGET_TEXTSIZE + 1];
257 int font_nr = (pressed ? gi->font_active : gi->font);
258 int font_width = getFontWidth(font_nr);
259 int border_x = gi->border.xsize;
260 int border_y = gi->border.ysize;
262 /* left part of gadget */
263 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
264 border_x, gi->height, gi->x, gi->y);
266 /* middle part of gadget */
267 for (i=0; i < gi->textinput.size + 1; i++)
268 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
269 font_width, gi->height,
270 gi->x + border_x + i * font_width, gi->y);
272 /* right part of gadget */
273 BlitBitmapOnBackground(gd->bitmap, drawto,
274 gd->x + gi->border.width - border_x, gd->y,
275 border_x, gi->height,
276 gi->x + gi->width - border_x, gi->y);
279 strcpy(text, gi->textinput.value);
282 /* gadget text value */
284 gi->x + border_x, gi->y + border_y, text,
285 font_nr, BLIT_MASKED);
287 cursor_letter = gi->textinput.value[gi->textinput.cursor_position];
288 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
289 cursor_string[1] = '\0';
291 /* draw cursor, if active */
295 gi->textinput.cursor_position * font_width,
296 gi->y + border_y, cursor_string,
297 font_nr, BLIT_INVERSE);
301 case GD_TYPE_TEXT_AREA:
305 char cursor_string[2];
306 int font_nr = (pressed ? gi->font_active : gi->font);
307 int font_width = getFontWidth(font_nr);
308 int font_height = getFontHeight(font_nr);
309 int border_x = gi->border.xsize;
310 int border_y = gi->border.ysize;
311 int gd_height = 2 * border_y + font_height;
313 /* top left part of gadget border */
314 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
315 border_x, border_y, gi->x, gi->y);
317 /* top middle part of gadget border */
318 for (i=0; i < gi->textarea.xsize; i++)
319 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
320 font_width, border_y,
321 gi->x + border_x + i * font_width, gi->y);
323 /* top right part of gadget border */
324 BlitBitmapOnBackground(gd->bitmap, drawto,
325 gd->x + gi->border.width - border_x, gd->y,
327 gi->x + gi->width - border_x, gi->y);
329 /* left and right part of gadget border for each row */
330 for (i=0; i < gi->textarea.ysize; i++)
332 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
333 border_x, font_height,
334 gi->x, gi->y + border_y + i * font_height);
335 BlitBitmapOnBackground(gd->bitmap, drawto,
336 gd->x + gi->border.width - border_x,
338 border_x, font_height,
339 gi->x + gi->width - border_x,
340 gi->y + border_y + i * font_height);
343 /* bottom left part of gadget border */
344 BlitBitmapOnBackground(gd->bitmap, drawto,
345 gd->x, gd->y + gd_height - border_y,
347 gi->x, gi->y + gi->height - border_y);
349 /* bottom middle part of gadget border */
350 for (i=0; i < gi->textarea.xsize; i++)
351 BlitBitmapOnBackground(gd->bitmap, drawto,
353 gd->y + gd_height - border_y,
354 font_width, border_y,
355 gi->x + border_x + i * font_width,
356 gi->y + gi->height - border_y);
358 /* bottom right part of gadget border */
359 BlitBitmapOnBackground(gd->bitmap, drawto,
360 gd->x + gi->border.width - border_x,
361 gd->y + gd_height - border_y,
363 gi->x + gi->width - border_x,
364 gi->y + gi->height - border_y);
366 ClearRectangleOnBackground(drawto,
369 gi->width - 2 * border_x,
370 gi->height - 2 * border_y);
372 /* gadget text value */
373 DrawTextToTextArea(gi->x + border_x, gi->y + border_y,
374 gi->textarea.value, font_nr, gi->textarea.xsize,
375 gi->textarea.xsize, gi->textarea.ysize,
378 cursor_letter = gi->textarea.value[gi->textarea.cursor_position];
379 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
380 cursor_string[1] = '\0';
382 /* draw cursor, if active */
385 gi->x + border_x + gi->textarea.cursor_x * font_width,
386 gi->y + border_y + gi->textarea.cursor_y * font_height,
388 font_nr, BLIT_INVERSE);
392 case GD_TYPE_SELECTBOX:
395 char text[MAX_GADGET_TEXTSIZE + 1];
396 int font_nr = (pressed ? gi->font_active : gi->font);
397 int font_width = getFontWidth(font_nr);
398 int font_height = getFontHeight(font_nr);
399 int border_x = gi->border.xsize;
400 int border_y = gi->border.ysize;
401 int button = gi->border.xsize_selectbutton;
402 int width_inner = gi->border.width - button - 2 * border_x;
403 int box_width = gi->selectbox.width;
404 int box_height = gi->selectbox.height;
406 /* left part of gadget */
407 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
408 border_x, gi->height, gi->x, gi->y);
410 /* middle part of gadget */
411 for (i=0; i < gi->selectbox.size; i++)
412 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
413 font_width, gi->height,
414 gi->x + border_x + i * font_width, gi->y);
416 /* button part of gadget */
417 BlitBitmapOnBackground(gd->bitmap, drawto,
418 gd->x + border_x + width_inner, gd->y,
420 gi->x + gi->width - border_x - button, gi->y);
422 /* right part of gadget */
423 BlitBitmapOnBackground(gd->bitmap, drawto,
424 gd->x + gi->border.width - border_x, gd->y,
425 border_x, gi->height,
426 gi->x + gi->width - border_x, gi->y);
429 strncpy(text, gi->selectbox.options[gi->selectbox.index].text,
431 text[gi->selectbox.size] = '\0';
433 /* gadget text value */
434 DrawTextExt(drawto, gi->x + border_x, gi->y + border_y, text,
435 font_nr, BLIT_MASKED);
439 if (!gi->selectbox.open)
441 gi->selectbox.open = TRUE;
442 gi->selectbox.stay_open = FALSE;
443 gi->selectbox.current_index = gi->selectbox.index;
445 /* save background under selectbox */
446 BlitBitmap(drawto, gfx.field_save_buffer,
447 gi->selectbox.x, gi->selectbox.y,
448 gi->selectbox.width, gi->selectbox.height,
449 gi->selectbox.x, gi->selectbox.y);
452 /* draw open selectbox */
454 /* top left part of gadget border */
455 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
457 gi->selectbox.x, gi->selectbox.y);
459 /* top middle part of gadget border */
460 for (i=0; i < gi->selectbox.size; i++)
461 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
462 font_width, border_y,
463 gi->selectbox.x + border_x + i * font_width,
466 /* top button part of gadget border */
467 BlitBitmapOnBackground(gd->bitmap, drawto,
468 gd->x + border_x + width_inner, gd->y,
470 gi->selectbox.x + box_width -border_x -button,
473 /* top right part of gadget border */
474 BlitBitmapOnBackground(gd->bitmap, drawto,
475 gd->x + gi->border.width - border_x, gd->y,
477 gi->selectbox.x + box_width - border_x,
480 /* left and right part of gadget border for each row */
481 for (i=0; i < gi->selectbox.num_values; i++)
483 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
484 border_x, font_height,
486 gi->selectbox.y + border_y + i*font_height);
487 BlitBitmapOnBackground(gd->bitmap, drawto,
488 gd->x + gi->border.width - border_x,
490 border_x, font_height,
491 gi->selectbox.x + box_width - border_x,
492 gi->selectbox.y + border_y + i*font_height);
495 /* bottom left part of gadget border */
496 BlitBitmapOnBackground(gd->bitmap, drawto,
497 gd->x, gd->y + gi->height - border_y,
500 gi->selectbox.y + box_height - border_y);
502 /* bottom middle part of gadget border */
503 for (i=0; i < gi->selectbox.size; i++)
504 BlitBitmapOnBackground(gd->bitmap, drawto,
506 gd->y + gi->height - border_y,
507 font_width, border_y,
508 gi->selectbox.x + border_x + i * font_width,
509 gi->selectbox.y + box_height - border_y);
511 /* bottom button part of gadget border */
512 BlitBitmapOnBackground(gd->bitmap, drawto,
513 gd->x + border_x + width_inner,
514 gd->y + gi->height - border_y,
516 gi->selectbox.x + box_width -border_x -button,
517 gi->selectbox.y + box_height - border_y);
519 /* bottom right part of gadget border */
520 BlitBitmapOnBackground(gd->bitmap, drawto,
521 gd->x + gi->border.width - border_x,
522 gd->y + gi->height - border_y,
524 gi->selectbox.x + box_width - border_x,
525 gi->selectbox.y + box_height - border_y);
527 ClearRectangleOnBackground(drawto,
528 gi->selectbox.x + border_x,
529 gi->selectbox.y + border_y,
530 gi->selectbox.width - 2 * border_x,
531 gi->selectbox.height - 2 * border_y);
533 /* selectbox text values */
534 for (i=0; i < gi->selectbox.num_values; i++)
536 int mask_mode = BLIT_MASKED;
538 strncpy(text, gi->selectbox.options[i].text, gi->selectbox.size);
539 text[gi->selectbox.size] = '\0';
541 if (i == gi->selectbox.current_index)
543 FillRectangle(drawto,
544 gi->selectbox.x + border_x,
545 gi->selectbox.y + border_y + i * font_height,
546 gi->selectbox.width - 2 * border_x, font_height,
547 gi->selectbox.inverse_color);
549 /* prevent use of cursor graphic by drawing at least two chars */
551 text[gi->selectbox.size] = '\0';
553 mask_mode = BLIT_INVERSE;
557 gi->selectbox.x + border_x,
558 gi->selectbox.y + border_y + i * font_height, text,
562 redraw_selectbox = TRUE;
564 else if (gi->selectbox.open)
566 gi->selectbox.open = FALSE;
568 /* restore background under selectbox */
569 BlitBitmap(gfx.field_save_buffer, drawto,
570 gi->selectbox.x, gi->selectbox.y,
571 gi->selectbox.width, gi->selectbox.height,
572 gi->selectbox.x, gi->selectbox.y);
574 /* redraw closed selectbox */
575 DrawGadget(gi, FALSE, FALSE);
577 redraw_selectbox = TRUE;
582 case GD_TYPE_SCROLLBAR_VERTICAL:
586 int ypos = gi->y + gi->scrollbar.position;
587 int design_full = gi->width;
588 int design_body = design_full - 2 * gi->border.ysize;
589 int size_full = gi->scrollbar.size;
590 int size_body = size_full - 2 * gi->border.ysize;
591 int num_steps = size_body / design_body;
592 int step_size_remain = size_body - num_steps * design_body;
594 /* clear scrollbar area */
595 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
596 gi->width, gi->height);
598 /* upper part of gadget */
599 BlitBitmapOnBackground(gd->bitmap, drawto,
601 gi->width, gi->border.ysize,
604 /* middle part of gadget */
605 for (i=0; i < num_steps; i++)
606 BlitBitmapOnBackground(gd->bitmap, drawto,
607 gd->x, gd->y + gi->border.ysize,
608 gi->width, design_body,
610 ypos + gi->border.ysize + i * design_body);
612 /* remaining middle part of gadget */
613 if (step_size_remain > 0)
614 BlitBitmapOnBackground(gd->bitmap, drawto,
615 gd->x, gd->y + gi->border.ysize,
616 gi->width, step_size_remain,
618 ypos + gi->border.ysize
619 + num_steps * design_body);
621 /* lower part of gadget */
622 BlitBitmapOnBackground(gd->bitmap, drawto,
623 gd->x, gd->y + design_full - gi->border.ysize,
624 gi->width, gi->border.ysize,
625 xpos, ypos + size_full - gi->border.ysize);
629 case GD_TYPE_SCROLLBAR_HORIZONTAL:
632 int xpos = gi->x + gi->scrollbar.position;
634 int design_full = gi->height;
635 int design_body = design_full - 2 * gi->border.xsize;
636 int size_full = gi->scrollbar.size;
637 int size_body = size_full - 2 * gi->border.xsize;
638 int num_steps = size_body / design_body;
639 int step_size_remain = size_body - num_steps * design_body;
641 /* clear scrollbar area */
642 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
643 gi->width, gi->height);
645 /* left part of gadget */
646 BlitBitmapOnBackground(gd->bitmap, drawto,
648 gi->border.xsize, gi->height,
651 /* middle part of gadget */
652 for (i=0; i < num_steps; i++)
653 BlitBitmapOnBackground(gd->bitmap, drawto,
654 gd->x + gi->border.xsize, gd->y,
655 design_body, gi->height,
656 xpos + gi->border.xsize + i * design_body,
659 /* remaining middle part of gadget */
660 if (step_size_remain > 0)
661 BlitBitmapOnBackground(gd->bitmap, drawto,
662 gd->x + gi->border.xsize, gd->y,
663 step_size_remain, gi->height,
664 xpos + gi->border.xsize
665 + num_steps * design_body,
668 /* right part of gadget */
669 BlitBitmapOnBackground(gd->bitmap, drawto,
670 gd->x + design_full - gi->border.xsize, gd->y,
671 gi->border.xsize, gi->height,
672 xpos + size_full - gi->border.xsize, ypos);
682 BlitBitmap(drawto, window,
683 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
685 if (gi->type == GD_TYPE_SELECTBOX && redraw_selectbox)
686 BlitBitmap(drawto, window,
687 gi->selectbox.x, gi->selectbox.y,
688 gi->selectbox.width, gi->selectbox.height,
689 gi->selectbox.x, gi->selectbox.y);
692 redraw_mask |= (gi->x < gfx.sx + gfx.sxsize ? REDRAW_FIELD :
693 gi->y < gfx.dy + gfx.dysize ? REDRAW_DOOR_1 :
694 gi->y > gfx.vy ? REDRAW_DOOR_2 : REDRAW_DOOR_3);
697 static int get_minimal_size_for_numeric_input(int minmax_value)
699 int min_size = 1; /* value needs at least one digit */
702 /* add number of digits needed for absolute value */
703 for (i = 10; i <= ABS(minmax_value); i *= 10)
706 /* if min/max value is negative, add one digit for minus sign */
707 if (minmax_value < 0)
713 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
720 while (tag != GDI_END)
725 gi->custom_id = va_arg(ap, int);
728 case GDI_CUSTOM_TYPE_ID:
729 gi->custom_type_id = va_arg(ap, int);
734 int max_textsize = MAX_INFO_TEXTSIZE - 1;
735 char *text = va_arg(ap, char *);
738 strncpy(gi->info_text, text, max_textsize);
742 gi->info_text[max_textsize] = '\0';
747 gi->x = va_arg(ap, int);
751 gi->y = va_arg(ap, int);
755 gi->width = va_arg(ap, int);
759 gi->height = va_arg(ap, int);
763 gi->type = va_arg(ap, unsigned int);
767 gi->state = va_arg(ap, unsigned int);
771 gi->active = (boolean)va_arg(ap, int);
774 case GDI_DIRECT_DRAW:
775 gi->direct_draw = (boolean)va_arg(ap, int);
779 gi->checked = (boolean)va_arg(ap, int);
783 gi->radio_nr = va_arg(ap, unsigned int);
786 case GDI_NUMBER_VALUE:
787 gi->textinput.number_value = va_arg(ap, int);
788 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
789 strcpy(gi->textinput.last_value, gi->textinput.value);
790 gi->textinput.cursor_position = strlen(gi->textinput.value);
794 gi->textinput.number_min = va_arg(ap, int);
795 if (gi->textinput.number_value < gi->textinput.number_min)
797 gi->textinput.number_value = gi->textinput.number_min;
798 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
799 strcpy(gi->textinput.last_value, gi->textinput.value);
804 gi->textinput.number_max = va_arg(ap, int);
805 if (gi->textinput.number_value > gi->textinput.number_max)
807 gi->textinput.number_value = gi->textinput.number_max;
808 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
809 strcpy(gi->textinput.last_value, gi->textinput.value);
815 int max_textsize = MAX_GADGET_TEXTSIZE;
817 if (gi->textinput.size)
818 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE - 1);
820 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
821 strcpy(gi->textinput.last_value, gi->textinput.value);
823 gi->textinput.value[max_textsize] = '\0';
824 gi->textinput.cursor_position = strlen(gi->textinput.value);
826 /* same tag also used for other gadget definitions */
827 strcpy(gi->textbutton.value, gi->textinput.value);
828 strcpy(gi->textarea.value, gi->textinput.value);
829 strcpy(gi->textarea.last_value, gi->textinput.value);
835 int tag_value = va_arg(ap, int);
836 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE - 1);
838 gi->textinput.size = max_textsize;
839 gi->textinput.value[max_textsize] = '\0';
840 strcpy(gi->textinput.last_value, gi->textinput.value);
842 /* same tag also used for other gadget definitions */
844 gi->textarea.size = max_textsize;
845 gi->textarea.value[max_textsize] = '\0';
846 strcpy(gi->textarea.last_value, gi->textinput.value);
848 gi->textbutton.size = max_textsize;
849 gi->textbutton.value[max_textsize] = '\0';
851 gi->selectbox.size = gi->textinput.size;
856 gi->font = va_arg(ap, int);
857 if (gi->font_active == 0)
858 gi->font_active = gi->font;
861 case GDI_TEXT_FONT_ACTIVE:
862 gi->font_active = va_arg(ap, int);
865 case GDI_SELECTBOX_OPTIONS:
866 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
869 case GDI_SELECTBOX_INDEX:
870 gi->selectbox.index = va_arg(ap, int);
873 case GDI_DESIGN_UNPRESSED:
874 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
875 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
876 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
879 case GDI_DESIGN_PRESSED:
880 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
881 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
882 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
885 case GDI_ALT_DESIGN_UNPRESSED:
886 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
887 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
888 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
891 case GDI_ALT_DESIGN_PRESSED:
892 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
893 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
894 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
897 case GDI_BORDER_SIZE:
898 gi->border.xsize = va_arg(ap, int);
899 gi->border.ysize = va_arg(ap, int);
902 case GDI_BORDER_SIZE_SELECTBUTTON:
903 gi->border.xsize_selectbutton = va_arg(ap, int);
906 case GDI_DESIGN_WIDTH:
907 gi->border.width = va_arg(ap, int);
910 case GDI_DECORATION_DESIGN:
911 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
912 gi->deco.design.x = va_arg(ap, int);
913 gi->deco.design.y = va_arg(ap, int);
916 case GDI_DECORATION_POSITION:
917 gi->deco.x = va_arg(ap, int);
918 gi->deco.y = va_arg(ap, int);
921 case GDI_DECORATION_SIZE:
922 gi->deco.width = va_arg(ap, int);
923 gi->deco.height = va_arg(ap, int);
926 case GDI_DECORATION_SHIFTING:
927 gi->deco.xshift = va_arg(ap, int);
928 gi->deco.yshift = va_arg(ap, int);
932 gi->event_mask = va_arg(ap, unsigned int);
936 gi->drawing.area_xsize = va_arg(ap, int);
937 gi->drawing.area_ysize = va_arg(ap, int);
939 /* determine dependent values for drawing area gadget, if needed */
940 if (gi->width == 0 && gi->height == 0 &&
941 gi->drawing.item_xsize !=0 && gi->drawing.item_ysize !=0)
943 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
944 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
946 else if (gi->drawing.item_xsize == 0 && gi->drawing.item_ysize == 0 &&
947 gi->width != 0 && gi->height != 0)
949 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
950 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
953 /* same tag also used for other gadget definitions */
954 gi->textarea.xsize = gi->drawing.area_xsize;
955 gi->textarea.ysize = gi->drawing.area_ysize;
957 if (gi->type & GD_TYPE_TEXT_AREA) /* force recalculation */
966 gi->drawing.item_xsize = va_arg(ap, int);
967 gi->drawing.item_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.area_xsize !=0 && gi->drawing.area_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.area_xsize == 0 && gi->drawing.area_ysize == 0 &&
977 gi->width != 0 && gi->height != 0)
979 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
980 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
984 case GDI_SCROLLBAR_ITEMS_MAX:
985 gi->scrollbar.items_max = va_arg(ap, int);
988 case GDI_SCROLLBAR_ITEMS_VISIBLE:
989 gi->scrollbar.items_visible = va_arg(ap, int);
992 case GDI_SCROLLBAR_ITEM_POSITION:
993 gi->scrollbar.item_position = va_arg(ap, int);
996 case GDI_WHEEL_AREA_X:
997 gi->wheelarea.x = va_arg(ap, int);
1000 case GDI_WHEEL_AREA_Y:
1001 gi->wheelarea.y = va_arg(ap, int);
1004 case GDI_WHEEL_AREA_WIDTH:
1005 gi->wheelarea.width = va_arg(ap, int);
1008 case GDI_WHEEL_AREA_HEIGHT:
1009 gi->wheelarea.height = va_arg(ap, int);
1012 case GDI_CALLBACK_INFO:
1013 gi->callback_info = va_arg(ap, gadget_function);
1016 case GDI_CALLBACK_ACTION:
1017 gi->callback_action = va_arg(ap, gadget_function);
1021 Error(ERR_EXIT, "HandleGadgetTags(): unknown tag %d", tag);
1024 tag = va_arg(ap, int); /* read next tag */
1027 /* check if gadget is complete */
1028 if (gi->type != GD_TYPE_DRAWING_AREA &&
1029 (!gi->design[GD_BUTTON_UNPRESSED].bitmap ||
1030 !gi->design[GD_BUTTON_PRESSED].bitmap))
1031 Error(ERR_EXIT, "gadget incomplete (missing Bitmap)");
1033 /* adjust gadget values in relation to other gadget values */
1035 if (gi->type & GD_TYPE_TEXT_INPUT)
1037 int font_nr = gi->font_active;
1038 int font_width = getFontWidth(font_nr);
1039 int font_height = getFontHeight(font_nr);
1040 int border_xsize = gi->border.xsize;
1041 int border_ysize = gi->border.ysize;
1043 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1045 int number_min = gi->textinput.number_min;
1046 int number_max = gi->textinput.number_max;
1047 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1048 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1049 int min_size = MAX(min_size_min, min_size_max);
1051 /* expand gadget text input size, if maximal value is too large */
1052 if (gi->textinput.size < min_size)
1053 gi->textinput.size = min_size;
1056 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1057 gi->height = 2 * border_ysize + font_height;
1060 if (gi->type & GD_TYPE_SELECTBOX)
1062 int font_nr = gi->font_active;
1063 int font_width = getFontWidth(font_nr);
1064 int font_height = getFontHeight(font_nr);
1065 int border_xsize = gi->border.xsize;
1066 int border_ysize = gi->border.ysize;
1067 int button_size = gi->border.xsize_selectbutton;
1068 int bottom_screen_border = gfx.sy + gfx.sysize - font_height;
1072 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1073 gi->height = 2 * border_ysize + font_height;
1075 if (gi->selectbox.options == NULL)
1076 Error(ERR_EXIT, "selectbox gadget incomplete (missing options array)");
1078 gi->selectbox.num_values = 0;
1079 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1080 gi->selectbox.num_values++;
1082 /* calculate values for open selectbox */
1083 gi->selectbox.width = gi->width;
1084 gi->selectbox.height =
1085 2 * border_ysize + gi->selectbox.num_values * font_height;
1087 gi->selectbox.x = gi->x;
1088 gi->selectbox.y = gi->y + gi->height;
1089 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1090 gi->selectbox.y = gi->y - gi->selectbox.height;
1091 if (gi->selectbox.y < 0)
1092 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1094 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1095 src_x += font_width / 2;
1096 src_y += font_height / 2;
1098 /* there may be esoteric cases with missing or too small font bitmap */
1099 if (src_bitmap != NULL &&
1100 src_x < src_bitmap->width && src_y < src_bitmap->height)
1101 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1103 /* always start with closed selectbox */
1104 gi->selectbox.open = FALSE;
1107 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1109 struct GadgetTextInput *text = &gi->textinput;
1110 int value = text->number_value;
1112 text->number_value = (value < text->number_min ? text->number_min :
1113 value > text->number_max ? text->number_max :
1116 sprintf(text->value, "%d", text->number_value);
1119 if (gi->type & GD_TYPE_TEXT_BUTTON)
1121 int font_nr = gi->font_active;
1122 int font_width = getFontWidth(font_nr);
1123 int font_height = getFontHeight(font_nr);
1124 int border_xsize = gi->border.xsize;
1125 int border_ysize = gi->border.ysize;
1127 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1128 gi->height = 2 * border_ysize + font_height;
1131 if (gi->type & GD_TYPE_SCROLLBAR)
1133 struct GadgetScrollbar *gs = &gi->scrollbar;
1134 int scrollbar_size_cmp;
1136 if (gi->width == 0 || gi->height == 0 ||
1137 gs->items_max == 0 || gs->items_visible == 0)
1138 Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
1140 /* calculate internal scrollbar values */
1141 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1142 gi->width : gi->height);
1143 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1144 gi->height : gi->width);
1146 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1147 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1148 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1150 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1151 gs->position_max = gs->size_max - gs->size;
1152 gs->correction = gs->size_max / gs->items_max / 2;
1154 /* finetuning for maximal right/bottom position */
1155 if (gs->item_position == gs->items_max - gs->items_visible)
1156 gs->position = gs->position_max;
1159 if (gi->type & GD_TYPE_TEXT_AREA)
1161 int font_nr = gi->font_active;
1162 int font_width = getFontWidth(font_nr);
1163 int font_height = getFontHeight(font_nr);
1164 int border_xsize = gi->border.xsize;
1165 int border_ysize = gi->border.ysize;
1167 if (gi->width == 0 || gi->height == 0)
1169 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1170 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1174 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1175 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1180 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1184 va_start(ap, first_tag);
1185 HandleGadgetTags(gi, first_tag, ap);
1191 void RedrawGadget(struct GadgetInfo *gi)
1197 DrawGadget(gi, gi->state, gi->direct_draw);
1200 struct GadgetInfo *CreateGadget(int first_tag, ...)
1202 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1205 /* always start with reliable default values */
1206 new_gadget->id = getNewGadgetID();
1207 new_gadget->callback_info = default_callback_info;
1208 new_gadget->callback_action = default_callback_action;
1209 new_gadget->active = TRUE;
1210 new_gadget->direct_draw = TRUE;
1212 new_gadget->next = NULL;
1214 va_start(ap, first_tag);
1215 HandleGadgetTags(new_gadget, first_tag, ap);
1218 /* insert new gadget into global gadget list */
1219 if (gadget_list_last_entry)
1221 gadget_list_last_entry->next = new_gadget;
1222 gadget_list_last_entry = gadget_list_last_entry->next;
1225 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1230 void FreeGadget(struct GadgetInfo *gi)
1232 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1234 /* prevent "last_info_gi" from pointing to memory that will be freed */
1235 if (last_info_gi == gi)
1236 last_info_gi = NULL;
1238 while (gi_previous != NULL && gi_previous->next != gi)
1239 gi_previous = gi_previous->next;
1241 if (gi == gadget_list_first_entry)
1242 gadget_list_first_entry = gi->next;
1244 if (gi == gadget_list_last_entry)
1245 gadget_list_last_entry = gi_previous;
1247 if (gi_previous != NULL)
1248 gi_previous->next = gi->next;
1253 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1255 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1258 gi->textinput.number_value = atoi(gi->textinput.value);
1260 if (gi->textinput.number_value < gi->textinput.number_min)
1261 gi->textinput.number_value = gi->textinput.number_min;
1262 if (gi->textinput.number_value > gi->textinput.number_max)
1263 gi->textinput.number_value = gi->textinput.number_max;
1265 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1267 if (gi->textinput.cursor_position < 0)
1268 gi->textinput.cursor_position = 0;
1269 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1270 gi->textinput.cursor_position = strlen(gi->textinput.value);
1273 /* global pointer to gadget actually in use (when mouse button pressed) */
1274 static struct GadgetInfo *last_gi = NULL;
1276 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1278 if (gi == NULL || gi->mapped)
1284 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1287 void MapGadget(struct GadgetInfo *gi)
1289 MapGadgetExt(gi, TRUE);
1292 void UnmapGadget(struct GadgetInfo *gi)
1294 if (gi == NULL || !gi->mapped)
1303 #define MAX_NUM_GADGETS 1024
1304 #define MULTIMAP_UNMAP (1 << 0)
1305 #define MULTIMAP_REMAP (1 << 1)
1306 #define MULTIMAP_REDRAW (1 << 2)
1307 #define MULTIMAP_PLAYFIELD (1 << 3)
1308 #define MULTIMAP_DOOR_1 (1 << 4)
1309 #define MULTIMAP_DOOR_2 (1 << 5)
1310 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1314 static void MultiMapGadgets(int mode)
1316 struct GadgetInfo *gi = gadget_list_first_entry;
1317 static boolean map_state[MAX_NUM_GADGETS];
1322 if ((mode & MULTIMAP_PLAYFIELD &&
1323 gi->x < gfx.sx + gfx.sxsize) ||
1324 (mode & MULTIMAP_DOOR_1 &&
1325 gi->x >= gfx.dx && gi->y < gfx.dy + gfx.dysize) ||
1326 (mode & MULTIMAP_DOOR_2 &&
1327 gi->x >= gfx.dx && gi->y > gfx.dy + gfx.dysize) ||
1328 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1330 if (mode & MULTIMAP_UNMAP)
1332 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1337 if (map_state[map_count++ % MAX_NUM_GADGETS])
1338 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1346 void UnmapAllGadgets()
1348 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1351 void RemapAllGadgets()
1353 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1356 boolean anyTextInputGadgetActive()
1358 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1361 boolean anyTextAreaGadgetActive()
1363 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1366 boolean anySelectboxGadgetActive()
1368 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1371 boolean anyScrollbarGadgetActive()
1373 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1376 boolean anyTextGadgetActive()
1378 return (anyTextInputGadgetActive() ||
1379 anyTextAreaGadgetActive() ||
1380 anySelectboxGadgetActive());
1383 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1385 return(gi != NULL &&
1386 gi->type & GD_TYPE_SELECTBOX &&
1387 mx >= gi->x && mx < gi->x + gi->width &&
1388 my >= gi->y && my < gi->y + gi->height);
1391 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1393 return(gi != NULL &&
1394 gi->type & GD_TYPE_SELECTBOX &&
1395 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1396 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1399 void ClickOnGadget(struct GadgetInfo *gi, int button)
1404 /* simulate releasing mouse button over last gadget, if still pressed */
1406 HandleGadgets(-1, -1, 0);
1408 /* simulate pressing mouse button over specified gadget */
1409 HandleGadgets(gi->x, gi->y, button);
1411 /* simulate releasing mouse button over specified gadget */
1412 HandleGadgets(gi->x, gi->y, 0);
1415 boolean HandleGadgets(int mx, int my, int button)
1417 static unsigned long pressed_delay = 0;
1418 static unsigned long pressed_delay_value = GADGET_FRAME_DELAY;
1419 static int last_button = 0;
1420 static int last_mx = 0, last_my = 0;
1421 static int pressed_mx = 0, pressed_my = 0;
1422 static boolean keep_selectbox_open = FALSE;
1423 static boolean gadget_stopped = FALSE;
1424 int scrollbar_mouse_pos = 0;
1425 struct GadgetInfo *new_gi, *gi;
1426 boolean press_event;
1427 boolean release_event;
1428 boolean mouse_moving;
1429 boolean mouse_inside_select_line;
1430 boolean mouse_inside_select_area;
1431 boolean mouse_released_where_pressed;
1432 boolean gadget_pressed;
1433 boolean gadget_pressed_repeated;
1434 boolean gadget_pressed_off_borders;
1435 boolean gadget_pressed_inside_select_line;
1436 boolean gadget_pressed_delay_reached;
1437 boolean gadget_moving;
1438 boolean gadget_moving_inside;
1439 boolean gadget_moving_off_borders;
1440 boolean gadget_draggable;
1441 boolean gadget_dragging;
1442 boolean gadget_released;
1443 boolean gadget_released_inside;
1444 boolean gadget_released_inside_select_line;
1445 boolean gadget_released_inside_select_area;
1446 boolean gadget_released_off_borders;
1447 boolean changed_position = FALSE;
1449 /* check if there are any gadgets defined */
1450 if (gadget_list_first_entry == NULL)
1453 /* simulated release of mouse button over last gadget */
1454 if (mx == -1 && my == -1 && button == 0)
1460 /* check which gadget is under the mouse pointer */
1461 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1463 /* check if button state has changed since last invocation */
1464 press_event = (button != 0 && last_button == 0);
1465 release_event = (button == 0 && last_button != 0);
1466 last_button = button;
1468 /* check if mouse has been moved since last invocation */
1469 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1473 if (press_event && new_gi != last_gi)
1479 mouse_released_where_pressed =
1480 (release_event && mx == pressed_mx && my == pressed_my);
1482 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1483 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1485 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1487 gadget_pressed_inside_select_line =
1488 (press_event && new_gi != NULL &&
1489 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1490 insideSelectboxLine(new_gi, mx, my));
1492 /* if mouse button pressed outside text or selectbox gadget, deactivate it */
1493 if (anyTextGadgetActive() &&
1494 (gadget_pressed_off_borders ||
1495 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1497 struct GadgetInfo *gi = last_gi;
1498 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
1500 /* check if text gadget has changed its value */
1501 if (gi->type & GD_TYPE_TEXT_INPUT)
1503 CheckRangeOfNumericInputGadget(gi);
1505 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1506 strcpy(gi->textinput.last_value, gi->textinput.value);
1508 gadget_changed = FALSE;
1511 /* selectbox does not change its value when closed by clicking outside */
1512 if (gi->type & GD_TYPE_SELECTBOX)
1513 gadget_changed = FALSE;
1515 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1517 gi->event.type = GD_EVENT_TEXT_LEAVING;
1519 if (gadget_changed && !(gi->type & GD_TYPE_SELECTBOX))
1520 gi->callback_action(gi);
1524 if (gadget_pressed_inside_select_line)
1529 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1530 gadget_pressed_repeated =
1531 (button != 0 && last_gi != NULL && new_gi == last_gi);
1533 gadget_pressed_delay_reached =
1534 DelayReached(&pressed_delay, pressed_delay_value);
1536 gadget_released = (release_event && last_gi != NULL);
1537 gadget_released_inside = (gadget_released && new_gi == last_gi);
1538 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1540 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1541 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1542 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1544 /* when handling selectbox, set additional state values */
1545 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1547 gadget_released_inside_select_line = insideSelectboxLine(last_gi, mx, my);
1548 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1552 gadget_released_inside_select_line = FALSE;
1553 gadget_released_inside_select_area = FALSE;
1556 /* setting state for handling over-large selectbox */
1557 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1558 keep_selectbox_open = FALSE;
1560 /* if new gadget pressed, store this gadget */
1564 /* 'gi' is actually handled gadget */
1567 /* if gadget is scrollbar, choose mouse position value */
1568 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1569 scrollbar_mouse_pos =
1570 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1572 /* if mouse button released, no gadget needs to be handled anymore */
1573 if (gadget_released)
1575 if (gi->type & GD_TYPE_SELECTBOX &&
1576 (keep_selectbox_open ||
1577 mouse_released_where_pressed ||
1578 !gadget_released_inside_select_area)) /* selectbox stays open */
1580 gi->selectbox.stay_open = TRUE;
1584 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1585 gi->type & GD_TYPE_TEXT_AREA)) /* text input stays open */
1589 /* modify event position values even if no gadget is pressed */
1590 if (button == 0 && !release_event)
1593 /* if new gadget or if no gadget was pressed, release stopped processing */
1594 if (gadget_pressed || new_gi == NULL)
1595 gadget_stopped = FALSE;
1597 /* if gadget was stopped while being handled, stop gadget processing here */
1603 int last_x = gi->event.x;
1604 int last_y = gi->event.y;
1606 gi->event.x = mx - gi->x;
1607 gi->event.y = my - gi->y;
1609 if (gi->type == GD_TYPE_DRAWING_AREA)
1611 gi->event.x /= gi->drawing.item_xsize;
1612 gi->event.y /= gi->drawing.item_ysize;
1614 if (last_x != gi->event.x || last_y != gi->event.y)
1615 changed_position = TRUE;
1617 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1619 int old_cursor_position = gi->textinput.cursor_position;
1621 /* if mouse button pressed inside activated text gadget, set cursor */
1622 gi->textinput.cursor_position =
1623 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1625 if (gi->textinput.cursor_position < 0)
1626 gi->textinput.cursor_position = 0;
1627 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1628 gi->textinput.cursor_position = strlen(gi->textinput.value);
1630 if (gi->textinput.cursor_position != old_cursor_position)
1631 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1633 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1635 int old_cursor_position = gi->textarea.cursor_position;
1636 int x = (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1637 int y = (my - gi->y - gi->border.ysize) / getFontHeight(gi->font);
1639 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1640 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1642 setTextAreaCursorXY(gi, x, y);
1644 if (gi->textarea.cursor_position != old_cursor_position)
1645 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1647 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1648 !keep_selectbox_open)
1650 int old_index = gi->selectbox.current_index;
1652 /* if mouse moving inside activated selectbox, select value */
1653 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1654 gi->selectbox.current_index =
1655 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1657 if (gi->selectbox.current_index < 0)
1658 gi->selectbox.current_index = 0;
1659 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1660 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1662 if (gi->selectbox.current_index != old_index)
1663 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1667 /* handle gadget popup info text */
1668 if (last_info_gi != new_gi ||
1669 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
1671 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
1673 new_gi->event.type = GD_EVENT_INFO_ENTERING;
1674 new_gi->callback_info(new_gi);
1676 else if (last_info_gi != NULL)
1678 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
1679 last_info_gi->callback_info(last_info_gi);
1682 last_info_gi = new_gi;
1687 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
1689 /* reset drag position for newly pressed scrollbar to "not dragging" */
1690 if (gadget_pressed && gadget_draggable)
1691 gi->scrollbar.drag_position = -1;
1693 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
1695 /* clicking next to a scrollbar to move it is not considered "moving" */
1696 if (gadget_draggable && !gadget_dragging)
1697 gadget_moving = FALSE;
1699 /* when leaving scrollbar area when jump-scrolling, stop gadget processing */
1700 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
1701 gadget_stopped = TRUE;
1703 if ((gadget_pressed) ||
1704 (gadget_pressed_repeated && gadget_pressed_delay_reached))
1706 if (gadget_pressed) /* gadget pressed the first time */
1708 /* initialize delay counter */
1709 DelayReached(&pressed_delay, 0);
1711 /* start gadget delay with longer delay after first click on gadget */
1712 pressed_delay_value = GADGET_FRAME_DELAY_FIRST;
1714 else /* gadget hold pressed for some time */
1716 /* after first repeated gadget click, continue with shorter delay value */
1717 pressed_delay_value = GADGET_FRAME_DELAY;
1720 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
1722 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1723 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1724 int slider_start = gpos + gi->scrollbar.position;
1725 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1726 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1728 if (IS_WHEEL_BUTTON(button) || !inside_slider)
1730 /* click scrollbar one scrollbar length up/left or down/right */
1732 struct GadgetScrollbar *gs = &gi->scrollbar;
1733 int old_item_position = gs->item_position;
1734 int item_steps = gs->items_visible - 1;
1735 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
1737 if (IS_WHEEL_BUTTON(button))
1739 boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
1741 item_steps = (scroll_single_step ? 1 : DEFAULT_WHEEL_STEPS);
1742 item_direction = (button == MB_WHEEL_UP ||
1743 button == MB_WHEEL_LEFT ? -1 : +1);
1746 changed_position = FALSE;
1748 gs->item_position += item_steps * item_direction;
1750 if (gs->item_position < 0)
1751 gs->item_position = 0;
1752 else if (gs->item_position > gs->items_max - gs->items_visible)
1753 gs->item_position = gs->items_max - gs->items_visible;
1755 if (old_item_position != gs->item_position)
1757 gi->event.item_position = gs->item_position;
1758 changed_position = TRUE;
1761 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
1764 gi->state = GD_BUTTON_UNPRESSED;
1765 gi->event.type = GD_EVENT_MOVING;
1766 gi->event.off_borders = FALSE;
1768 if (gi->event_mask & GD_EVENT_MOVING && changed_position)
1769 gi->callback_action(gi);
1775 /* don't handle this scrollbar anymore when mouse position reached */
1776 if (gadget_pressed_repeated)
1778 gadget_stopped = TRUE;
1790 if (gi->type == GD_TYPE_CHECK_BUTTON)
1792 gi->checked = !gi->checked;
1794 else if (gi->type == GD_TYPE_RADIO_BUTTON)
1796 struct GadgetInfo *rgi = gadget_list_first_entry;
1801 rgi->type == GD_TYPE_RADIO_BUTTON &&
1802 rgi->radio_nr == gi->radio_nr &&
1805 rgi->checked = FALSE;
1806 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
1814 else if (gi->type & GD_TYPE_SCROLLBAR)
1816 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1817 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1818 int slider_start = gpos + gi->scrollbar.position;
1819 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1820 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1822 if (!IS_WHEEL_BUTTON(button) && inside_slider)
1824 /* start dragging scrollbar */
1825 gi->scrollbar.drag_position =
1826 scrollbar_mouse_pos - gi->scrollbar.position;
1829 else if (gi->type & GD_TYPE_SELECTBOX)
1831 /* keep selectbox open in case of over-large selectbox */
1832 keep_selectbox_open = (mouse_inside_select_line &&
1833 mouse_inside_select_area);
1836 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1838 gi->state = GD_BUTTON_PRESSED;
1839 gi->event.type = GD_EVENT_PRESSED;
1840 gi->event.button = button;
1841 gi->event.off_borders = FALSE;
1843 if (gi->event_mask & GD_EVENT_PRESSED)
1844 gi->callback_action(gi);
1847 if (gadget_pressed_repeated)
1849 gi->event.type = GD_EVENT_PRESSED;
1851 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
1852 gi->callback_action(gi);
1857 if (gi->type & GD_TYPE_BUTTON)
1859 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
1860 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1861 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
1862 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1864 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
1866 int old_index = gi->selectbox.current_index;
1868 /* if mouse moving inside activated selectbox, select value */
1869 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1870 gi->selectbox.current_index =
1871 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1873 if (gi->selectbox.current_index < 0)
1874 gi->selectbox.current_index = 0;
1875 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1876 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1878 if (gi->selectbox.current_index != old_index)
1879 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1881 else if (gi->type & GD_TYPE_SCROLLBAR)
1883 struct GadgetScrollbar *gs = &gi->scrollbar;
1884 int old_item_position = gs->item_position;
1886 gs->position = scrollbar_mouse_pos - gs->drag_position;
1888 /* make sure to always precisely reach end positions when dragging */
1889 if (gs->position <= 0)
1892 gs->item_position = 0;
1894 else if (gs->position >= gs->position_max)
1896 gs->position = gs->position_max;
1897 gs->item_position = gs->items_max - gs->items_visible;
1902 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
1905 if (gs->item_position < 0)
1906 gs->item_position = 0;
1907 if (gs->item_position > gs->items_max - 1)
1908 gs->item_position = gs->items_max - 1;
1910 if (old_item_position != gs->item_position)
1912 gi->event.item_position = gs->item_position;
1913 changed_position = TRUE;
1916 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1919 gi->state = (gadget_moving_inside || gadget_draggable ?
1920 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
1921 gi->event.type = GD_EVENT_MOVING;
1922 gi->event.off_borders = gadget_moving_off_borders;
1924 if (gi->event_mask & GD_EVENT_MOVING && changed_position &&
1925 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
1926 gi->callback_action(gi);
1929 if (gadget_released_inside)
1931 boolean deactivate_gadget = TRUE;
1932 boolean gadget_changed = TRUE;
1934 if (gi->type & GD_TYPE_SELECTBOX)
1936 if (keep_selectbox_open ||
1937 mouse_released_where_pressed ||
1938 !gadget_released_inside_select_area) /* selectbox stays open */
1940 deactivate_gadget = FALSE;
1941 gadget_changed = FALSE;
1943 else if (gi->selectbox.index != gi->selectbox.current_index)
1944 gi->selectbox.index = gi->selectbox.current_index;
1946 gadget_changed = FALSE;
1949 if (deactivate_gadget &&
1950 !(gi->type & GD_TYPE_TEXT_INPUT ||
1951 gi->type & GD_TYPE_TEXT_AREA)) /* text input stays open */
1952 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1954 gi->state = GD_BUTTON_UNPRESSED;
1955 gi->event.type = GD_EVENT_RELEASED;
1957 if ((gi->event_mask & GD_EVENT_RELEASED) && gadget_changed)
1959 gi->callback_action(gi);
1963 if (gadget_released_off_borders)
1965 if (gi->type & GD_TYPE_SCROLLBAR)
1966 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1969 gi->state = GD_BUTTON_UNPRESSED;
1971 gi->event.type = GD_EVENT_RELEASED;
1973 if (gi->event_mask & GD_EVENT_RELEASED &&
1974 gi->event_mask & GD_EVENT_OFF_BORDERS)
1975 gi->callback_action(gi);
1978 /* handle gadgets unmapped/mapped between pressing and releasing */
1979 if (release_event && !gadget_released && new_gi)
1980 new_gi->state = GD_BUTTON_UNPRESSED;
1982 return (gadget_pressed || gadget_pressed_repeated ||
1983 gadget_released || gadget_moving);
1986 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
1988 char text[MAX_GADGET_TEXTSIZE];
1989 int cursor_position = gi->textarea.cursor_position;
1991 if (strlen(gi->textarea.value) == MAX_GADGET_TEXTSIZE) /* no space left */
1994 strcpy(text, gi->textarea.value);
1995 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
1996 gi->textarea.value[cursor_position] = c;
1998 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2001 boolean HandleGadgetsKeyInput(Key key)
2003 struct GadgetInfo *gi = last_gi;
2005 if (gi == NULL || !gi->mapped ||
2006 !(gi->type & GD_TYPE_TEXT_INPUT ||
2007 gi->type & GD_TYPE_TEXT_AREA ||
2008 gi->type & GD_TYPE_SELECTBOX))
2011 if (key == KSYM_Return) /* valid for both text input and selectbox */
2013 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_RETURN) != 0);
2015 if (gi->type & GD_TYPE_TEXT_INPUT)
2017 CheckRangeOfNumericInputGadget(gi);
2019 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2020 strcpy(gi->textinput.last_value, gi->textinput.value);
2022 gadget_changed = FALSE;
2024 else if (gi->type & GD_TYPE_SELECTBOX)
2026 if (gi->selectbox.index != gi->selectbox.current_index)
2027 gi->selectbox.index = gi->selectbox.current_index;
2029 gadget_changed = FALSE;
2032 if (gi->type & GD_TYPE_TEXT_AREA)
2034 insertCharIntoTextArea(gi, '\n');
2036 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2040 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2042 gi->event.type = GD_EVENT_TEXT_RETURN;
2048 gi->callback_action(gi);
2050 else if (gi->type & GD_TYPE_TEXT_INPUT) /* only valid for text input */
2052 char text[MAX_GADGET_TEXTSIZE];
2053 int text_length = strlen(gi->textinput.value);
2054 int cursor_pos = gi->textinput.cursor_position;
2055 char letter = getCharFromKey(key);
2056 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2057 letter >= '0' && letter <= '9' :
2060 if (legal_letter && text_length < gi->textinput.size)
2062 strcpy(text, gi->textinput.value);
2063 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2064 gi->textinput.value[cursor_pos] = letter;
2065 gi->textinput.cursor_position++;
2067 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2069 else if (key == KSYM_Left && cursor_pos > 0)
2071 gi->textinput.cursor_position--;
2073 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2075 else if (key == KSYM_Right && cursor_pos < text_length)
2077 gi->textinput.cursor_position++;
2079 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2081 else if (key == KSYM_BackSpace && cursor_pos > 0)
2083 strcpy(text, gi->textinput.value);
2084 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2085 gi->textinput.cursor_position--;
2087 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2089 else if (key == KSYM_Delete && cursor_pos < text_length)
2091 strcpy(text, gi->textinput.value);
2092 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2094 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2097 else if (gi->type & GD_TYPE_TEXT_AREA) /* only valid for text area */
2099 char text[MAX_GADGET_TEXTSIZE];
2100 int text_length = strlen(gi->textarea.value);
2101 int area_ysize = gi->textarea.ysize;
2102 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2103 int cursor_y = gi->textarea.cursor_y;
2104 int cursor_pos = gi->textarea.cursor_position;
2105 char letter = getCharFromKey(key);
2106 boolean legal_letter = (letter != 0);
2110 insertCharIntoTextArea(gi, letter);
2112 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2114 else if (key == KSYM_Left && cursor_pos > 0)
2116 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2118 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2120 else if (key == KSYM_Right && cursor_pos < text_length)
2122 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2124 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2126 else if (key == KSYM_Up && cursor_y > 0)
2128 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2129 gi->textarea.cursor_x_preferred = cursor_x_pref;
2131 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2133 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2135 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2136 gi->textarea.cursor_x_preferred = cursor_x_pref;
2138 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2140 else if (key == KSYM_BackSpace && cursor_pos > 0)
2142 strcpy(text, gi->textarea.value);
2143 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2145 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2147 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2149 else if (key == KSYM_Delete && cursor_pos < text_length)
2151 strcpy(text, gi->textarea.value);
2152 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2154 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2157 else if (gi->type & GD_TYPE_SELECTBOX) /* only valid for selectbox */
2159 int index = gi->selectbox.current_index;
2160 int num_values = gi->selectbox.num_values;
2162 if (key == KSYM_Up && index > 0)
2164 gi->selectbox.current_index--;
2166 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2168 else if (key == KSYM_Down && index < num_values - 1)
2170 gi->selectbox.current_index++;
2172 DrawGadget(gi, DG_PRESSED, gi->direct_draw);