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 /* take care here: "boolean" is typedef'ed as "unsigned char",
772 which gets promoted to "int" */
773 gi->active = (boolean)va_arg(ap, int);
776 case GDI_DIRECT_DRAW:
777 /* take care here: "boolean" is typedef'ed as "unsigned char",
778 which gets promoted to "int" */
779 gi->direct_draw = (boolean)va_arg(ap, int);
783 /* take care here: "boolean" is typedef'ed as "unsigned char",
784 which gets promoted to "int" */
785 gi->checked = (boolean)va_arg(ap, int);
789 gi->radio_nr = va_arg(ap, unsigned int);
792 case GDI_NUMBER_VALUE:
793 gi->textinput.number_value = va_arg(ap, int);
794 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
795 strcpy(gi->textinput.last_value, gi->textinput.value);
796 gi->textinput.cursor_position = strlen(gi->textinput.value);
800 gi->textinput.number_min = va_arg(ap, int);
801 if (gi->textinput.number_value < gi->textinput.number_min)
803 gi->textinput.number_value = gi->textinput.number_min;
804 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
805 strcpy(gi->textinput.last_value, gi->textinput.value);
810 gi->textinput.number_max = va_arg(ap, int);
811 if (gi->textinput.number_value > gi->textinput.number_max)
813 gi->textinput.number_value = gi->textinput.number_max;
814 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
815 strcpy(gi->textinput.last_value, gi->textinput.value);
821 int max_textsize = MAX_GADGET_TEXTSIZE;
823 if (gi->textinput.size)
824 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE - 1);
826 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
827 strcpy(gi->textinput.last_value, gi->textinput.value);
829 gi->textinput.value[max_textsize] = '\0';
830 gi->textinput.cursor_position = strlen(gi->textinput.value);
832 /* same tag also used for other gadget definitions */
833 strcpy(gi->textbutton.value, gi->textinput.value);
834 strcpy(gi->textarea.value, gi->textinput.value);
835 strcpy(gi->textarea.last_value, gi->textinput.value);
841 int tag_value = va_arg(ap, int);
842 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE - 1);
844 gi->textinput.size = max_textsize;
845 gi->textinput.value[max_textsize] = '\0';
846 strcpy(gi->textinput.last_value, gi->textinput.value);
848 /* same tag also used for other gadget definitions */
850 gi->textarea.size = max_textsize;
851 gi->textarea.value[max_textsize] = '\0';
852 strcpy(gi->textarea.last_value, gi->textinput.value);
854 gi->textbutton.size = max_textsize;
855 gi->textbutton.value[max_textsize] = '\0';
857 gi->selectbox.size = gi->textinput.size;
862 gi->font = va_arg(ap, int);
863 if (gi->font_active == 0)
864 gi->font_active = gi->font;
867 case GDI_TEXT_FONT_ACTIVE:
868 gi->font_active = va_arg(ap, int);
871 case GDI_SELECTBOX_OPTIONS:
872 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
875 case GDI_SELECTBOX_INDEX:
876 gi->selectbox.index = va_arg(ap, int);
879 case GDI_DESIGN_UNPRESSED:
880 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
881 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
882 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
885 case GDI_DESIGN_PRESSED:
886 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
887 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
888 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
891 case GDI_ALT_DESIGN_UNPRESSED:
892 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
893 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
894 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
897 case GDI_ALT_DESIGN_PRESSED:
898 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
899 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
900 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
903 case GDI_BORDER_SIZE:
904 gi->border.xsize = va_arg(ap, int);
905 gi->border.ysize = va_arg(ap, int);
908 case GDI_BORDER_SIZE_SELECTBUTTON:
909 gi->border.xsize_selectbutton = va_arg(ap, int);
912 case GDI_DESIGN_WIDTH:
913 gi->border.width = va_arg(ap, int);
916 case GDI_DECORATION_DESIGN:
917 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
918 gi->deco.design.x = va_arg(ap, int);
919 gi->deco.design.y = va_arg(ap, int);
922 case GDI_DECORATION_POSITION:
923 gi->deco.x = va_arg(ap, int);
924 gi->deco.y = va_arg(ap, int);
927 case GDI_DECORATION_SIZE:
928 gi->deco.width = va_arg(ap, int);
929 gi->deco.height = va_arg(ap, int);
932 case GDI_DECORATION_SHIFTING:
933 gi->deco.xshift = va_arg(ap, int);
934 gi->deco.yshift = va_arg(ap, int);
938 gi->event_mask = va_arg(ap, unsigned int);
942 gi->drawing.area_xsize = va_arg(ap, int);
943 gi->drawing.area_ysize = va_arg(ap, int);
945 /* determine dependent values for drawing area gadget, if needed */
946 if (gi->width == 0 && gi->height == 0 &&
947 gi->drawing.item_xsize !=0 && gi->drawing.item_ysize !=0)
949 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
950 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
952 else if (gi->drawing.item_xsize == 0 && gi->drawing.item_ysize == 0 &&
953 gi->width != 0 && gi->height != 0)
955 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
956 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
959 /* same tag also used for other gadget definitions */
960 gi->textarea.xsize = gi->drawing.area_xsize;
961 gi->textarea.ysize = gi->drawing.area_ysize;
963 if (gi->type & GD_TYPE_TEXT_AREA) /* force recalculation */
972 gi->drawing.item_xsize = va_arg(ap, int);
973 gi->drawing.item_ysize = va_arg(ap, int);
975 /* determine dependent values for drawing area gadget, if needed */
976 if (gi->width == 0 && gi->height == 0 &&
977 gi->drawing.area_xsize !=0 && gi->drawing.area_ysize !=0)
979 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
980 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
982 else if (gi->drawing.area_xsize == 0 && gi->drawing.area_ysize == 0 &&
983 gi->width != 0 && gi->height != 0)
985 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
986 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
990 case GDI_SCROLLBAR_ITEMS_MAX:
991 gi->scrollbar.items_max = va_arg(ap, int);
994 case GDI_SCROLLBAR_ITEMS_VISIBLE:
995 gi->scrollbar.items_visible = va_arg(ap, int);
998 case GDI_SCROLLBAR_ITEM_POSITION:
999 gi->scrollbar.item_position = va_arg(ap, int);
1002 case GDI_WHEEL_AREA_X:
1003 gi->wheelarea.x = va_arg(ap, int);
1006 case GDI_WHEEL_AREA_Y:
1007 gi->wheelarea.y = va_arg(ap, int);
1010 case GDI_WHEEL_AREA_WIDTH:
1011 gi->wheelarea.width = va_arg(ap, int);
1014 case GDI_WHEEL_AREA_HEIGHT:
1015 gi->wheelarea.height = va_arg(ap, int);
1018 case GDI_CALLBACK_INFO:
1019 gi->callback_info = va_arg(ap, gadget_function);
1022 case GDI_CALLBACK_ACTION:
1023 gi->callback_action = va_arg(ap, gadget_function);
1027 Error(ERR_EXIT, "HandleGadgetTags(): unknown tag %d", tag);
1030 tag = va_arg(ap, int); /* read next tag */
1033 /* check if gadget is complete */
1034 if (gi->type != GD_TYPE_DRAWING_AREA &&
1035 (!gi->design[GD_BUTTON_UNPRESSED].bitmap ||
1036 !gi->design[GD_BUTTON_PRESSED].bitmap))
1037 Error(ERR_EXIT, "gadget incomplete (missing Bitmap)");
1039 /* adjust gadget values in relation to other gadget values */
1041 if (gi->type & GD_TYPE_TEXT_INPUT)
1043 int font_nr = gi->font_active;
1044 int font_width = getFontWidth(font_nr);
1045 int font_height = getFontHeight(font_nr);
1046 int border_xsize = gi->border.xsize;
1047 int border_ysize = gi->border.ysize;
1049 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1051 int number_min = gi->textinput.number_min;
1052 int number_max = gi->textinput.number_max;
1053 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1054 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1055 int min_size = MAX(min_size_min, min_size_max);
1057 /* expand gadget text input size, if maximal value is too large */
1058 if (gi->textinput.size < min_size)
1059 gi->textinput.size = min_size;
1062 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1063 gi->height = 2 * border_ysize + font_height;
1066 if (gi->type & GD_TYPE_SELECTBOX)
1068 int font_nr = gi->font_active;
1069 int font_width = getFontWidth(font_nr);
1070 int font_height = getFontHeight(font_nr);
1071 int border_xsize = gi->border.xsize;
1072 int border_ysize = gi->border.ysize;
1073 int button_size = gi->border.xsize_selectbutton;
1074 int bottom_screen_border = gfx.sy + gfx.sysize - font_height;
1078 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1079 gi->height = 2 * border_ysize + font_height;
1081 if (gi->selectbox.options == NULL)
1082 Error(ERR_EXIT, "selectbox gadget incomplete (missing options array)");
1084 gi->selectbox.num_values = 0;
1085 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1086 gi->selectbox.num_values++;
1088 /* calculate values for open selectbox */
1089 gi->selectbox.width = gi->width;
1090 gi->selectbox.height =
1091 2 * border_ysize + gi->selectbox.num_values * font_height;
1093 gi->selectbox.x = gi->x;
1094 gi->selectbox.y = gi->y + gi->height;
1095 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1096 gi->selectbox.y = gi->y - gi->selectbox.height;
1097 if (gi->selectbox.y < 0)
1098 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1100 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1101 src_x += font_width / 2;
1102 src_y += font_height / 2;
1104 /* there may be esoteric cases with missing or too small font bitmap */
1105 if (src_bitmap != NULL &&
1106 src_x < src_bitmap->width && src_y < src_bitmap->height)
1107 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1109 /* always start with closed selectbox */
1110 gi->selectbox.open = FALSE;
1113 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1115 struct GadgetTextInput *text = &gi->textinput;
1116 int value = text->number_value;
1118 text->number_value = (value < text->number_min ? text->number_min :
1119 value > text->number_max ? text->number_max :
1122 sprintf(text->value, "%d", text->number_value);
1125 if (gi->type & GD_TYPE_TEXT_BUTTON)
1127 int font_nr = gi->font_active;
1128 int font_width = getFontWidth(font_nr);
1129 int font_height = getFontHeight(font_nr);
1130 int border_xsize = gi->border.xsize;
1131 int border_ysize = gi->border.ysize;
1133 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1134 gi->height = 2 * border_ysize + font_height;
1137 if (gi->type & GD_TYPE_SCROLLBAR)
1139 struct GadgetScrollbar *gs = &gi->scrollbar;
1140 int scrollbar_size_cmp;
1142 if (gi->width == 0 || gi->height == 0 ||
1143 gs->items_max == 0 || gs->items_visible == 0)
1144 Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
1146 /* calculate internal scrollbar values */
1147 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1148 gi->width : gi->height);
1149 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1150 gi->height : gi->width);
1152 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1153 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1154 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1156 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1157 gs->position_max = gs->size_max - gs->size;
1158 gs->correction = gs->size_max / gs->items_max / 2;
1160 /* finetuning for maximal right/bottom position */
1161 if (gs->item_position == gs->items_max - gs->items_visible)
1162 gs->position = gs->position_max;
1165 if (gi->type & GD_TYPE_TEXT_AREA)
1167 int font_nr = gi->font_active;
1168 int font_width = getFontWidth(font_nr);
1169 int font_height = getFontHeight(font_nr);
1170 int border_xsize = gi->border.xsize;
1171 int border_ysize = gi->border.ysize;
1173 if (gi->width == 0 || gi->height == 0)
1175 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1176 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1180 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1181 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1186 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1190 va_start(ap, first_tag);
1191 HandleGadgetTags(gi, first_tag, ap);
1197 void RedrawGadget(struct GadgetInfo *gi)
1203 DrawGadget(gi, gi->state, gi->direct_draw);
1206 struct GadgetInfo *CreateGadget(int first_tag, ...)
1208 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1211 /* always start with reliable default values */
1212 new_gadget->id = getNewGadgetID();
1213 new_gadget->callback_info = default_callback_info;
1214 new_gadget->callback_action = default_callback_action;
1215 new_gadget->active = TRUE;
1216 new_gadget->direct_draw = TRUE;
1218 new_gadget->next = NULL;
1220 va_start(ap, first_tag);
1221 HandleGadgetTags(new_gadget, first_tag, ap);
1224 /* insert new gadget into global gadget list */
1225 if (gadget_list_last_entry)
1227 gadget_list_last_entry->next = new_gadget;
1228 gadget_list_last_entry = gadget_list_last_entry->next;
1231 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1236 void FreeGadget(struct GadgetInfo *gi)
1238 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1240 /* prevent "last_info_gi" from pointing to memory that will be freed */
1241 if (last_info_gi == gi)
1242 last_info_gi = NULL;
1244 while (gi_previous != NULL && gi_previous->next != gi)
1245 gi_previous = gi_previous->next;
1247 if (gi == gadget_list_first_entry)
1248 gadget_list_first_entry = gi->next;
1250 if (gi == gadget_list_last_entry)
1251 gadget_list_last_entry = gi_previous;
1253 if (gi_previous != NULL)
1254 gi_previous->next = gi->next;
1259 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1261 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1264 gi->textinput.number_value = atoi(gi->textinput.value);
1266 if (gi->textinput.number_value < gi->textinput.number_min)
1267 gi->textinput.number_value = gi->textinput.number_min;
1268 if (gi->textinput.number_value > gi->textinput.number_max)
1269 gi->textinput.number_value = gi->textinput.number_max;
1271 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1273 if (gi->textinput.cursor_position < 0)
1274 gi->textinput.cursor_position = 0;
1275 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1276 gi->textinput.cursor_position = strlen(gi->textinput.value);
1279 /* global pointer to gadget actually in use (when mouse button pressed) */
1280 static struct GadgetInfo *last_gi = NULL;
1282 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1284 if (gi == NULL || gi->mapped)
1290 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1293 void MapGadget(struct GadgetInfo *gi)
1295 MapGadgetExt(gi, TRUE);
1298 void UnmapGadget(struct GadgetInfo *gi)
1300 if (gi == NULL || !gi->mapped)
1309 #define MAX_NUM_GADGETS 1024
1310 #define MULTIMAP_UNMAP (1 << 0)
1311 #define MULTIMAP_REMAP (1 << 1)
1312 #define MULTIMAP_REDRAW (1 << 2)
1313 #define MULTIMAP_PLAYFIELD (1 << 3)
1314 #define MULTIMAP_DOOR_1 (1 << 4)
1315 #define MULTIMAP_DOOR_2 (1 << 5)
1316 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1320 static void MultiMapGadgets(int mode)
1322 struct GadgetInfo *gi = gadget_list_first_entry;
1323 static boolean map_state[MAX_NUM_GADGETS];
1328 if ((mode & MULTIMAP_PLAYFIELD &&
1329 gi->x < gfx.sx + gfx.sxsize) ||
1330 (mode & MULTIMAP_DOOR_1 &&
1331 gi->x >= gfx.dx && gi->y < gfx.dy + gfx.dysize) ||
1332 (mode & MULTIMAP_DOOR_2 &&
1333 gi->x >= gfx.dx && gi->y > gfx.dy + gfx.dysize) ||
1334 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1336 if (mode & MULTIMAP_UNMAP)
1338 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1343 if (map_state[map_count++ % MAX_NUM_GADGETS])
1344 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1352 void UnmapAllGadgets()
1354 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1357 void RemapAllGadgets()
1359 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1362 boolean anyTextInputGadgetActive()
1364 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1367 boolean anyTextAreaGadgetActive()
1369 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1372 boolean anySelectboxGadgetActive()
1374 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1377 boolean anyScrollbarGadgetActive()
1379 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1382 boolean anyTextGadgetActive()
1384 return (anyTextInputGadgetActive() ||
1385 anyTextAreaGadgetActive() ||
1386 anySelectboxGadgetActive());
1389 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1391 return(gi != NULL &&
1392 gi->type & GD_TYPE_SELECTBOX &&
1393 mx >= gi->x && mx < gi->x + gi->width &&
1394 my >= gi->y && my < gi->y + gi->height);
1397 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1399 return(gi != NULL &&
1400 gi->type & GD_TYPE_SELECTBOX &&
1401 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1402 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1405 void ClickOnGadget(struct GadgetInfo *gi, int button)
1410 /* simulate releasing mouse button over last gadget, if still pressed */
1412 HandleGadgets(-1, -1, 0);
1414 /* simulate pressing mouse button over specified gadget */
1415 HandleGadgets(gi->x, gi->y, button);
1417 /* simulate releasing mouse button over specified gadget */
1418 HandleGadgets(gi->x, gi->y, 0);
1421 boolean HandleGadgets(int mx, int my, int button)
1423 static unsigned long pressed_delay = 0;
1424 static unsigned long pressed_delay_value = GADGET_FRAME_DELAY;
1425 static int last_button = 0;
1426 static int last_mx = 0, last_my = 0;
1427 static int pressed_mx = 0, pressed_my = 0;
1428 static boolean keep_selectbox_open = FALSE;
1429 static boolean gadget_stopped = FALSE;
1430 int scrollbar_mouse_pos = 0;
1431 struct GadgetInfo *new_gi, *gi;
1432 boolean press_event;
1433 boolean release_event;
1434 boolean mouse_moving;
1435 boolean mouse_inside_select_line;
1436 boolean mouse_inside_select_area;
1437 boolean mouse_released_where_pressed;
1438 boolean gadget_pressed;
1439 boolean gadget_pressed_repeated;
1440 boolean gadget_pressed_off_borders;
1441 boolean gadget_pressed_inside_select_line;
1442 boolean gadget_pressed_delay_reached;
1443 boolean gadget_moving;
1444 boolean gadget_moving_inside;
1445 boolean gadget_moving_off_borders;
1446 boolean gadget_draggable;
1447 boolean gadget_dragging;
1448 boolean gadget_released;
1449 boolean gadget_released_inside;
1450 boolean gadget_released_inside_select_line;
1451 boolean gadget_released_inside_select_area;
1452 boolean gadget_released_off_borders;
1453 boolean changed_position = FALSE;
1455 /* check if there are any gadgets defined */
1456 if (gadget_list_first_entry == NULL)
1459 /* simulated release of mouse button over last gadget */
1460 if (mx == -1 && my == -1 && button == 0)
1466 /* check which gadget is under the mouse pointer */
1467 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1469 /* check if button state has changed since last invocation */
1470 press_event = (button != 0 && last_button == 0);
1471 release_event = (button == 0 && last_button != 0);
1472 last_button = button;
1474 /* check if mouse has been moved since last invocation */
1475 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1479 if (press_event && new_gi != last_gi)
1485 mouse_released_where_pressed =
1486 (release_event && mx == pressed_mx && my == pressed_my);
1488 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1489 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1491 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1493 gadget_pressed_inside_select_line =
1494 (press_event && new_gi != NULL &&
1495 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1496 insideSelectboxLine(new_gi, mx, my));
1498 /* if mouse button pressed outside text or selectbox gadget, deactivate it */
1499 if (anyTextGadgetActive() &&
1500 (gadget_pressed_off_borders ||
1501 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1503 struct GadgetInfo *gi = last_gi;
1504 boolean gadget_changed = (gi->event_mask & GD_EVENT_TEXT_LEAVING);
1506 /* check if text gadget has changed its value */
1507 if (gi->type & GD_TYPE_TEXT_INPUT)
1509 CheckRangeOfNumericInputGadget(gi);
1511 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1512 strcpy(gi->textinput.last_value, gi->textinput.value);
1514 gadget_changed = FALSE;
1517 /* selectbox does not change its value when closed by clicking outside */
1518 if (gi->type & GD_TYPE_SELECTBOX)
1519 gadget_changed = FALSE;
1521 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1523 gi->event.type = GD_EVENT_TEXT_LEAVING;
1525 if (gadget_changed && !(gi->type & GD_TYPE_SELECTBOX))
1526 gi->callback_action(gi);
1530 if (gadget_pressed_inside_select_line)
1535 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1536 gadget_pressed_repeated =
1537 (button != 0 && last_gi != NULL && new_gi == last_gi);
1539 gadget_pressed_delay_reached =
1540 DelayReached(&pressed_delay, pressed_delay_value);
1542 gadget_released = (release_event && last_gi != NULL);
1543 gadget_released_inside = (gadget_released && new_gi == last_gi);
1544 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1546 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1547 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1548 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1550 /* when handling selectbox, set additional state values */
1551 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1553 gadget_released_inside_select_line = insideSelectboxLine(last_gi, mx, my);
1554 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1558 gadget_released_inside_select_line = FALSE;
1559 gadget_released_inside_select_area = FALSE;
1562 /* setting state for handling over-large selectbox */
1563 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1564 keep_selectbox_open = FALSE;
1566 /* if new gadget pressed, store this gadget */
1570 /* 'gi' is actually handled gadget */
1573 /* if gadget is scrollbar, choose mouse position value */
1574 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1575 scrollbar_mouse_pos =
1576 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1578 /* if mouse button released, no gadget needs to be handled anymore */
1579 if (gadget_released)
1581 if (gi->type & GD_TYPE_SELECTBOX &&
1582 (keep_selectbox_open ||
1583 mouse_released_where_pressed ||
1584 !gadget_released_inside_select_area)) /* selectbox stays open */
1586 gi->selectbox.stay_open = TRUE;
1590 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1591 gi->type & GD_TYPE_TEXT_AREA)) /* text input stays open */
1595 /* modify event position values even if no gadget is pressed */
1596 if (button == 0 && !release_event)
1599 /* if new gadget or if no gadget was pressed, release stopped processing */
1600 if (gadget_pressed || new_gi == NULL)
1601 gadget_stopped = FALSE;
1603 /* if gadget was stopped while being handled, stop gadget processing here */
1609 int last_x = gi->event.x;
1610 int last_y = gi->event.y;
1612 gi->event.x = mx - gi->x;
1613 gi->event.y = my - gi->y;
1615 if (gi->type == GD_TYPE_DRAWING_AREA)
1617 gi->event.x /= gi->drawing.item_xsize;
1618 gi->event.y /= gi->drawing.item_ysize;
1620 if (last_x != gi->event.x || last_y != gi->event.y)
1621 changed_position = TRUE;
1623 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1625 int old_cursor_position = gi->textinput.cursor_position;
1627 /* if mouse button pressed inside activated text gadget, set cursor */
1628 gi->textinput.cursor_position =
1629 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1631 if (gi->textinput.cursor_position < 0)
1632 gi->textinput.cursor_position = 0;
1633 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1634 gi->textinput.cursor_position = strlen(gi->textinput.value);
1636 if (gi->textinput.cursor_position != old_cursor_position)
1637 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1639 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1641 int old_cursor_position = gi->textarea.cursor_position;
1642 int x = (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1643 int y = (my - gi->y - gi->border.ysize) / getFontHeight(gi->font);
1645 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1646 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1648 setTextAreaCursorXY(gi, x, y);
1650 if (gi->textarea.cursor_position != old_cursor_position)
1651 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1653 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1654 !keep_selectbox_open)
1656 int old_index = gi->selectbox.current_index;
1658 /* if mouse moving inside activated selectbox, select value */
1659 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1660 gi->selectbox.current_index =
1661 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1663 if (gi->selectbox.current_index < 0)
1664 gi->selectbox.current_index = 0;
1665 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1666 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1668 if (gi->selectbox.current_index != old_index)
1669 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1673 /* handle gadget popup info text */
1674 if (last_info_gi != new_gi ||
1675 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
1677 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
1679 new_gi->event.type = GD_EVENT_INFO_ENTERING;
1680 new_gi->callback_info(new_gi);
1682 else if (last_info_gi != NULL)
1684 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
1685 last_info_gi->callback_info(last_info_gi);
1688 last_info_gi = new_gi;
1693 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
1695 /* reset drag position for newly pressed scrollbar to "not dragging" */
1696 if (gadget_pressed && gadget_draggable)
1697 gi->scrollbar.drag_position = -1;
1699 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
1701 /* clicking next to a scrollbar to move it is not considered "moving" */
1702 if (gadget_draggable && !gadget_dragging)
1703 gadget_moving = FALSE;
1705 /* when leaving scrollbar area when jump-scrolling, stop gadget processing */
1706 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
1707 gadget_stopped = TRUE;
1709 if ((gadget_pressed) ||
1710 (gadget_pressed_repeated && gadget_pressed_delay_reached))
1712 if (gadget_pressed) /* gadget pressed the first time */
1714 /* initialize delay counter */
1715 DelayReached(&pressed_delay, 0);
1717 /* start gadget delay with longer delay after first click on gadget */
1718 pressed_delay_value = GADGET_FRAME_DELAY_FIRST;
1720 else /* gadget hold pressed for some time */
1722 /* after first repeated gadget click, continue with shorter delay value */
1723 pressed_delay_value = GADGET_FRAME_DELAY;
1726 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
1728 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1729 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1730 int slider_start = gpos + gi->scrollbar.position;
1731 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1732 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1734 if (IS_WHEEL_BUTTON(button) || !inside_slider)
1736 /* click scrollbar one scrollbar length up/left or down/right */
1738 struct GadgetScrollbar *gs = &gi->scrollbar;
1739 int old_item_position = gs->item_position;
1740 int item_steps = gs->items_visible - 1;
1741 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
1743 if (IS_WHEEL_BUTTON(button))
1745 boolean scroll_single_step = (GetKeyModState() & KMOD_Alt);
1747 item_steps = (scroll_single_step ? 1 : DEFAULT_WHEEL_STEPS);
1748 item_direction = (button == MB_WHEEL_UP ||
1749 button == MB_WHEEL_LEFT ? -1 : +1);
1752 changed_position = FALSE;
1754 gs->item_position += item_steps * item_direction;
1756 if (gs->item_position < 0)
1757 gs->item_position = 0;
1758 else if (gs->item_position > gs->items_max - gs->items_visible)
1759 gs->item_position = gs->items_max - gs->items_visible;
1761 if (old_item_position != gs->item_position)
1763 gi->event.item_position = gs->item_position;
1764 changed_position = TRUE;
1767 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
1770 gi->state = GD_BUTTON_UNPRESSED;
1771 gi->event.type = GD_EVENT_MOVING;
1772 gi->event.off_borders = FALSE;
1774 if (gi->event_mask & GD_EVENT_MOVING && changed_position)
1775 gi->callback_action(gi);
1781 /* don't handle this scrollbar anymore when mouse position reached */
1782 if (gadget_pressed_repeated)
1784 gadget_stopped = TRUE;
1796 if (gi->type == GD_TYPE_CHECK_BUTTON)
1798 gi->checked = !gi->checked;
1800 else if (gi->type == GD_TYPE_RADIO_BUTTON)
1802 struct GadgetInfo *rgi = gadget_list_first_entry;
1807 rgi->type == GD_TYPE_RADIO_BUTTON &&
1808 rgi->radio_nr == gi->radio_nr &&
1811 rgi->checked = FALSE;
1812 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
1820 else if (gi->type & GD_TYPE_SCROLLBAR)
1822 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1823 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1824 int slider_start = gpos + gi->scrollbar.position;
1825 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1826 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1828 if (!IS_WHEEL_BUTTON(button) && inside_slider)
1830 /* start dragging scrollbar */
1831 gi->scrollbar.drag_position =
1832 scrollbar_mouse_pos - gi->scrollbar.position;
1835 else if (gi->type & GD_TYPE_SELECTBOX)
1837 /* keep selectbox open in case of over-large selectbox */
1838 keep_selectbox_open = (mouse_inside_select_line &&
1839 mouse_inside_select_area);
1842 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1844 gi->state = GD_BUTTON_PRESSED;
1845 gi->event.type = GD_EVENT_PRESSED;
1846 gi->event.button = button;
1847 gi->event.off_borders = FALSE;
1849 if (gi->event_mask & GD_EVENT_PRESSED)
1850 gi->callback_action(gi);
1853 if (gadget_pressed_repeated)
1855 gi->event.type = GD_EVENT_PRESSED;
1857 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
1858 gi->callback_action(gi);
1863 if (gi->type & GD_TYPE_BUTTON)
1865 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
1866 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1867 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
1868 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1870 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
1872 int old_index = gi->selectbox.current_index;
1874 /* if mouse moving inside activated selectbox, select value */
1875 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1876 gi->selectbox.current_index =
1877 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1879 if (gi->selectbox.current_index < 0)
1880 gi->selectbox.current_index = 0;
1881 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1882 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1884 if (gi->selectbox.current_index != old_index)
1885 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1887 else if (gi->type & GD_TYPE_SCROLLBAR)
1889 struct GadgetScrollbar *gs = &gi->scrollbar;
1890 int old_item_position = gs->item_position;
1892 gs->position = scrollbar_mouse_pos - gs->drag_position;
1894 /* make sure to always precisely reach end positions when dragging */
1895 if (gs->position <= 0)
1898 gs->item_position = 0;
1900 else if (gs->position >= gs->position_max)
1902 gs->position = gs->position_max;
1903 gs->item_position = gs->items_max - gs->items_visible;
1908 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
1911 if (gs->item_position < 0)
1912 gs->item_position = 0;
1913 if (gs->item_position > gs->items_max - 1)
1914 gs->item_position = gs->items_max - 1;
1916 if (old_item_position != gs->item_position)
1918 gi->event.item_position = gs->item_position;
1919 changed_position = TRUE;
1922 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1925 gi->state = (gadget_moving_inside || gadget_draggable ?
1926 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
1927 gi->event.type = GD_EVENT_MOVING;
1928 gi->event.off_borders = gadget_moving_off_borders;
1930 if (gi->event_mask & GD_EVENT_MOVING && changed_position &&
1931 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
1932 gi->callback_action(gi);
1935 if (gadget_released_inside)
1937 boolean deactivate_gadget = TRUE;
1938 boolean gadget_changed = TRUE;
1940 if (gi->type & GD_TYPE_SELECTBOX)
1942 if (keep_selectbox_open ||
1943 mouse_released_where_pressed ||
1944 !gadget_released_inside_select_area) /* selectbox stays open */
1946 deactivate_gadget = FALSE;
1947 gadget_changed = FALSE;
1949 else if (gi->selectbox.index != gi->selectbox.current_index)
1950 gi->selectbox.index = gi->selectbox.current_index;
1952 gadget_changed = FALSE;
1955 if (deactivate_gadget &&
1956 !(gi->type & GD_TYPE_TEXT_INPUT ||
1957 gi->type & GD_TYPE_TEXT_AREA)) /* text input stays open */
1958 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1960 gi->state = GD_BUTTON_UNPRESSED;
1961 gi->event.type = GD_EVENT_RELEASED;
1963 if ((gi->event_mask & GD_EVENT_RELEASED) && gadget_changed)
1965 gi->callback_action(gi);
1969 if (gadget_released_off_borders)
1971 if (gi->type & GD_TYPE_SCROLLBAR)
1972 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1975 gi->state = GD_BUTTON_UNPRESSED;
1977 gi->event.type = GD_EVENT_RELEASED;
1979 if (gi->event_mask & GD_EVENT_RELEASED &&
1980 gi->event_mask & GD_EVENT_OFF_BORDERS)
1981 gi->callback_action(gi);
1984 /* handle gadgets unmapped/mapped between pressing and releasing */
1985 if (release_event && !gadget_released && new_gi)
1986 new_gi->state = GD_BUTTON_UNPRESSED;
1988 return (gadget_pressed || gadget_pressed_repeated ||
1989 gadget_released || gadget_moving);
1992 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
1994 char text[MAX_GADGET_TEXTSIZE];
1995 int cursor_position = gi->textarea.cursor_position;
1997 if (strlen(gi->textarea.value) == MAX_GADGET_TEXTSIZE) /* no space left */
2000 strcpy(text, gi->textarea.value);
2001 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
2002 gi->textarea.value[cursor_position] = c;
2004 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2007 boolean HandleGadgetsKeyInput(Key key)
2009 struct GadgetInfo *gi = last_gi;
2011 if (gi == NULL || !gi->mapped ||
2012 !(gi->type & GD_TYPE_TEXT_INPUT ||
2013 gi->type & GD_TYPE_TEXT_AREA ||
2014 gi->type & GD_TYPE_SELECTBOX))
2017 if (key == KSYM_Return) /* valid for both text input and selectbox */
2019 boolean gadget_changed = (gi->event_mask & GD_EVENT_TEXT_RETURN);
2021 if (gi->type & GD_TYPE_TEXT_INPUT)
2023 CheckRangeOfNumericInputGadget(gi);
2025 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2026 strcpy(gi->textinput.last_value, gi->textinput.value);
2028 gadget_changed = FALSE;
2030 else if (gi->type & GD_TYPE_SELECTBOX)
2032 if (gi->selectbox.index != gi->selectbox.current_index)
2033 gi->selectbox.index = gi->selectbox.current_index;
2035 gadget_changed = FALSE;
2038 if (gi->type & GD_TYPE_TEXT_AREA)
2040 insertCharIntoTextArea(gi, '\n');
2042 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2046 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2048 gi->event.type = GD_EVENT_TEXT_RETURN;
2054 gi->callback_action(gi);
2056 else if (gi->type & GD_TYPE_TEXT_INPUT) /* only valid for text input */
2058 char text[MAX_GADGET_TEXTSIZE];
2059 int text_length = strlen(gi->textinput.value);
2060 int cursor_pos = gi->textinput.cursor_position;
2061 char letter = getCharFromKey(key);
2062 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2063 letter >= '0' && letter <= '9' :
2066 if (legal_letter && text_length < gi->textinput.size)
2068 strcpy(text, gi->textinput.value);
2069 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2070 gi->textinput.value[cursor_pos] = letter;
2071 gi->textinput.cursor_position++;
2073 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2075 else if (key == KSYM_Left && cursor_pos > 0)
2077 gi->textinput.cursor_position--;
2079 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2081 else if (key == KSYM_Right && cursor_pos < text_length)
2083 gi->textinput.cursor_position++;
2085 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2087 else if (key == KSYM_BackSpace && cursor_pos > 0)
2089 strcpy(text, gi->textinput.value);
2090 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2091 gi->textinput.cursor_position--;
2093 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2095 else if (key == KSYM_Delete && cursor_pos < text_length)
2097 strcpy(text, gi->textinput.value);
2098 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2100 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2103 else if (gi->type & GD_TYPE_TEXT_AREA) /* only valid for text area */
2105 char text[MAX_GADGET_TEXTSIZE];
2106 int text_length = strlen(gi->textarea.value);
2107 int area_ysize = gi->textarea.ysize;
2108 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2109 int cursor_y = gi->textarea.cursor_y;
2110 int cursor_pos = gi->textarea.cursor_position;
2111 char letter = getCharFromKey(key);
2112 boolean legal_letter = (letter != 0);
2116 insertCharIntoTextArea(gi, letter);
2118 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2120 else if (key == KSYM_Left && cursor_pos > 0)
2122 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2124 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2126 else if (key == KSYM_Right && cursor_pos < text_length)
2128 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2130 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2132 else if (key == KSYM_Up && cursor_y > 0)
2134 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2135 gi->textarea.cursor_x_preferred = cursor_x_pref;
2137 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2139 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2141 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2142 gi->textarea.cursor_x_preferred = cursor_x_pref;
2144 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2146 else if (key == KSYM_BackSpace && cursor_pos > 0)
2148 strcpy(text, gi->textarea.value);
2149 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2151 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2153 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2155 else if (key == KSYM_Delete && cursor_pos < text_length)
2157 strcpy(text, gi->textarea.value);
2158 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2160 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2163 else if (gi->type & GD_TYPE_SELECTBOX) /* only valid for selectbox */
2165 int index = gi->selectbox.current_index;
2166 int num_values = gi->selectbox.num_values;
2168 if (key == KSYM_Up && index > 0)
2170 gi->selectbox.current_index--;
2172 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2174 else if (key == KSYM_Down && index < num_values - 1)
2176 gi->selectbox.current_index++;
2178 DrawGadget(gi, DG_PRESSED, gi->direct_draw);