1 /***********************************************************
2 * Artsoft Retro-Game Library *
3 *----------------------------------------------------------*
4 * (c) 1994-2001 Artsoft Entertainment *
6 * Detmolder Strasse 189 *
9 * e-mail: info@artsoft.org *
10 *----------------------------------------------------------*
12 ***********************************************************/
22 /* values for DrawGadget() */
23 #define DG_UNPRESSED 0
28 static struct GadgetInfo *gadget_list_first_entry = NULL;
29 static struct GadgetInfo *gadget_list_last_entry = NULL;
30 static int next_free_gadget_id = 1;
31 static boolean gadget_id_wrapped = FALSE;
33 static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
35 struct GadgetInfo *gi = gadget_list_first_entry;
37 while (gi && gi->id != id)
43 static int getNewGadgetID()
45 int id = next_free_gadget_id++;
47 if (next_free_gadget_id <= 0) /* counter overrun */
49 gadget_id_wrapped = TRUE; /* now we must check each ID */
50 next_free_gadget_id = 0;
53 if (gadget_id_wrapped)
55 next_free_gadget_id++;
56 while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
57 next_free_gadget_id++;
60 if (next_free_gadget_id <= 0) /* cannot get new gadget id */
61 Error(ERR_EXIT, "too much gadgets -- this should not happen");
66 static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my)
68 struct GadgetInfo *gi = gadget_list_first_entry;
73 mx >= gi->x && mx < gi->x + gi->width &&
74 my >= gi->y && my < gi->y + gi->height)
83 static void default_callback_info(void *ptr)
86 if (game_status == LEVELED)
87 HandleEditorGadgetInfoText(ptr);
93 static void default_callback_action(void *ptr)
98 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
100 int state = (pressed ? 1 : 0);
101 struct GadgetDesign *gd = (gi->checked ?
102 &gi->alt_design[state] :
107 case GD_TYPE_NORMAL_BUTTON:
108 case GD_TYPE_CHECK_BUTTON:
109 case GD_TYPE_RADIO_BUTTON:
110 BlitBitmap(gd->bitmap, drawto,
111 gd->x, gd->y, gi->width, gi->height, gi->x, gi->y);
112 if (gi->deco.design.bitmap)
113 BlitBitmap(gi->deco.design.bitmap, drawto,
114 gi->deco.design.x, gi->deco.design.y,
115 gi->deco.width, gi->deco.height,
116 gi->x + gi->deco.x + (pressed ? gi->deco.xshift : 0),
117 gi->y + gi->deco.y + (pressed ? gi->deco.yshift : 0));
120 case GD_TYPE_TEXTINPUT_ALPHANUMERIC:
121 case GD_TYPE_TEXTINPUT_NUMERIC:
125 char cursor_string[3];
126 char text[MAX_GADGET_TEXTSIZE + 1];
127 int font_type = gi->text.font_type;
128 int font_width = getFontWidth(FS_SMALL, font_type);
129 int border = gi->border.size;
130 strcpy(text, gi->text.value);
133 /* left part of gadget */
134 BlitBitmap(gd->bitmap, drawto,
135 gd->x, gd->y, border, gi->height, gi->x, gi->y);
137 /* middle part of gadget */
138 for (i=0; i<=gi->text.size; i++)
139 BlitBitmap(gd->bitmap, drawto,
140 gd->x + border, gd->y, font_width, gi->height,
141 gi->x + border + i * font_width, gi->y);
143 /* right part of gadget */
144 BlitBitmap(gd->bitmap, drawto,
145 gd->x + gi->border.width - border, gd->y,
146 border, gi->height, gi->x + gi->width - border, gi->y);
148 /* gadget text value */
149 DrawText(gi->x + border, gi->y + border, text, FS_SMALL, font_type);
151 cursor_letter = gi->text.value[gi->text.cursor_position];
152 cursor_string[0] = '~';
153 cursor_string[1] = (cursor_letter != '\0' ? cursor_letter : ' ');
154 cursor_string[2] = '\0';
156 /* draw cursor, if active */
158 DrawText(gi->x + border + gi->text.cursor_position * font_width,
159 gi->y + border, cursor_string, FS_SMALL, font_type);
163 case GD_TYPE_SCROLLBAR_VERTICAL:
167 int ypos = gi->y + gi->scrollbar.position;
168 int design_full = gi->width;
169 int design_body = design_full - 2 * gi->border.size;
170 int size_full = gi->scrollbar.size;
171 int size_body = size_full - 2 * gi->border.size;
172 int num_steps = size_body / design_body;
173 int step_size_remain = size_body - num_steps * design_body;
175 /* clear scrollbar area */
176 ClearRectangle(backbuffer, gi->x, gi->y, gi->width, gi->height);
178 /* upper part of gadget */
179 BlitBitmap(gd->bitmap, drawto,
181 gi->width, gi->border.size,
184 /* middle part of gadget */
185 for (i=0; i<num_steps; i++)
186 BlitBitmap(gd->bitmap, drawto,
187 gd->x, gd->y + gi->border.size,
188 gi->width, design_body,
189 xpos, ypos + gi->border.size + i * design_body);
191 /* remaining middle part of gadget */
192 if (step_size_remain > 0)
193 BlitBitmap(gd->bitmap, drawto,
194 gd->x, gd->y + gi->border.size,
195 gi->width, step_size_remain,
196 xpos, ypos + gi->border.size + num_steps * design_body);
198 /* lower part of gadget */
199 BlitBitmap(gd->bitmap, drawto,
200 gd->x, gd->y + design_full - gi->border.size,
201 gi->width, gi->border.size,
202 xpos, ypos + size_full - gi->border.size);
206 case GD_TYPE_SCROLLBAR_HORIZONTAL:
209 int xpos = gi->x + gi->scrollbar.position;
211 int design_full = gi->height;
212 int design_body = design_full - 2 * gi->border.size;
213 int size_full = gi->scrollbar.size;
214 int size_body = size_full - 2 * gi->border.size;
215 int num_steps = size_body / design_body;
216 int step_size_remain = size_body - num_steps * design_body;
218 /* clear scrollbar area */
219 ClearRectangle(backbuffer, gi->x, gi->y, gi->width, gi->height);
221 /* left part of gadget */
222 BlitBitmap(gd->bitmap, drawto,
224 gi->border.size, gi->height,
227 /* middle part of gadget */
228 for (i=0; i<num_steps; i++)
229 BlitBitmap(gd->bitmap, drawto,
230 gd->x + gi->border.size, gd->y,
231 design_body, gi->height,
232 xpos + gi->border.size + i * design_body, ypos);
234 /* remaining middle part of gadget */
235 if (step_size_remain > 0)
236 BlitBitmap(gd->bitmap, drawto,
237 gd->x + gi->border.size, gd->y,
238 step_size_remain, gi->height,
239 xpos + gi->border.size + num_steps * design_body, ypos);
241 /* right part of gadget */
242 BlitBitmap(gd->bitmap, drawto,
243 gd->x + design_full - gi->border.size, gd->y,
244 gi->border.size, gi->height,
245 xpos + size_full - gi->border.size, ypos);
254 BlitBitmap(drawto, window,
255 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
257 redraw_mask |= (gi->x < gfx.sx + gfx.sxsize ? REDRAW_FIELD :
258 gi->y < gfx.dy + gfx.dysize ? REDRAW_DOOR_1 :
259 gi->y > gfx.vy ? REDRAW_DOOR_2 : REDRAW_DOOR_3);
262 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
266 while (tag != GDI_END)
271 gi->custom_id = va_arg(ap, int);
274 case GDI_CUSTOM_TYPE_ID:
275 gi->custom_type_id = va_arg(ap, int);
280 int max_textsize = MAX_INFO_TEXTSIZE - 1;
282 strncpy(gi->info_text, va_arg(ap, char *), max_textsize);
283 gi->info_text[max_textsize] = '\0';
288 gi->x = va_arg(ap, int);
292 gi->y = va_arg(ap, int);
296 gi->width = va_arg(ap, int);
300 gi->height = va_arg(ap, int);
304 gi->type = va_arg(ap, unsigned long);
308 gi->state = va_arg(ap, unsigned long);
312 /* take care here: "boolean" is typedef'ed as "unsigned char",
313 which gets promoted to "int" */
314 gi->checked = (boolean)va_arg(ap, int);
318 gi->radio_nr = va_arg(ap, unsigned long);
321 case GDI_NUMBER_VALUE:
322 gi->text.number_value = va_arg(ap, long);
323 sprintf(gi->text.value, "%d", gi->text.number_value);
324 gi->text.cursor_position = strlen(gi->text.value);
328 gi->text.number_min = va_arg(ap, long);
329 if (gi->text.number_value < gi->text.number_min)
331 gi->text.number_value = gi->text.number_min;
332 sprintf(gi->text.value, "%d", gi->text.number_value);
337 gi->text.number_max = va_arg(ap, long);
338 if (gi->text.number_value > gi->text.number_max)
340 gi->text.number_value = gi->text.number_max;
341 sprintf(gi->text.value, "%d", gi->text.number_value);
347 int max_textsize = MAX_GADGET_TEXTSIZE;
350 max_textsize = MIN(gi->text.size, MAX_GADGET_TEXTSIZE - 1);
352 strncpy(gi->text.value, va_arg(ap, char *), max_textsize);
353 gi->text.value[max_textsize] = '\0';
354 gi->text.cursor_position = strlen(gi->text.value);
360 int tag_value = va_arg(ap, int);
361 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE - 1);
363 gi->text.size = max_textsize;
364 gi->text.value[max_textsize] = '\0';
369 gi->text.font_type = va_arg(ap, int);
372 case GDI_DESIGN_UNPRESSED:
373 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
374 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
375 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
378 case GDI_DESIGN_PRESSED:
379 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
380 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
381 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
384 case GDI_ALT_DESIGN_UNPRESSED:
385 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
386 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
387 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
390 case GDI_ALT_DESIGN_PRESSED:
391 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
392 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
393 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
396 case GDI_BORDER_SIZE:
397 gi->border.size = va_arg(ap, int);
400 case GDI_TEXTINPUT_DESIGN_WIDTH:
401 gi->border.width = va_arg(ap, int);
404 case GDI_DECORATION_DESIGN:
405 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
406 gi->deco.design.x = va_arg(ap, int);
407 gi->deco.design.y = va_arg(ap, int);
410 case GDI_DECORATION_POSITION:
411 gi->deco.x = va_arg(ap, int);
412 gi->deco.y = va_arg(ap, int);
415 case GDI_DECORATION_SIZE:
416 gi->deco.width = va_arg(ap, int);
417 gi->deco.height = va_arg(ap, int);
420 case GDI_DECORATION_SHIFTING:
421 gi->deco.xshift = va_arg(ap, int);
422 gi->deco.yshift = va_arg(ap, int);
426 gi->event_mask = va_arg(ap, unsigned long);
430 gi->drawing.area_xsize = va_arg(ap, int);
431 gi->drawing.area_ysize = va_arg(ap, int);
433 /* determine dependent values for drawing area gadget, if needed */
434 if (gi->width == 0 && gi->height == 0 &&
435 gi->drawing.item_xsize !=0 && gi->drawing.item_ysize !=0)
437 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
438 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
440 else if (gi->drawing.item_xsize == 0 && gi->drawing.item_ysize == 0 &&
441 gi->width != 0 && gi->height != 0)
443 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
444 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
449 gi->drawing.item_xsize = va_arg(ap, int);
450 gi->drawing.item_ysize = va_arg(ap, int);
452 /* determine dependent values for drawing area gadget, if needed */
453 if (gi->width == 0 && gi->height == 0 &&
454 gi->drawing.area_xsize !=0 && gi->drawing.area_ysize !=0)
456 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
457 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
459 else if (gi->drawing.area_xsize == 0 && gi->drawing.area_ysize == 0 &&
460 gi->width != 0 && gi->height != 0)
462 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
463 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
467 case GDI_SCROLLBAR_ITEMS_MAX:
468 gi->scrollbar.items_max = va_arg(ap, int);
471 case GDI_SCROLLBAR_ITEMS_VISIBLE:
472 gi->scrollbar.items_visible = va_arg(ap, int);
475 case GDI_SCROLLBAR_ITEM_POSITION:
476 gi->scrollbar.item_position = va_arg(ap, int);
479 case GDI_CALLBACK_INFO:
480 gi->callback_info = va_arg(ap, gadget_function);
483 case GDI_CALLBACK_ACTION:
484 gi->callback_action = va_arg(ap, gadget_function);
488 Error(ERR_EXIT, "HandleGadgetTags(): unknown tag %d", tag);
491 tag = va_arg(ap, int); /* read next tag */
494 /* check if gadget complete */
495 if (gi->type != GD_TYPE_DRAWING_AREA &&
496 (!gi->design[GD_BUTTON_UNPRESSED].bitmap ||
497 !gi->design[GD_BUTTON_PRESSED].bitmap))
498 Error(ERR_EXIT, "gadget incomplete (missing Bitmap)");
500 /* adjust gadget values in relation to other gadget values */
502 if (gi->type & GD_TYPE_TEXTINPUT)
504 int font_width = getFontWidth(FS_SMALL, gi->text.font_type);
505 int font_height = getFontHeight(FS_SMALL, gi->text.font_type);
507 gi->width = 2 * gi->border.size + (gi->text.size + 1) * font_width;
508 gi->height = 2 * gi->border.size + font_height;
511 if (gi->type & GD_TYPE_TEXTINPUT_NUMERIC)
513 struct GadgetTextInput *text = &gi->text;
514 int value = text->number_value;
516 text->number_value = (value < text->number_min ? text->number_min :
517 value > text->number_max ? text->number_max :
520 sprintf(text->value, "%d", text->number_value);
523 if (gi->type & GD_TYPE_SCROLLBAR)
525 struct GadgetScrollbar *gs = &gi->scrollbar;
527 if (gi->width == 0 || gi->height == 0 ||
528 gs->items_max == 0 || gs->items_visible == 0)
529 Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
531 /* calculate internal scrollbar values */
532 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
533 gi->height : gi->width);
534 gs->size = gs->size_max * gs->items_visible / gs->items_max;
535 gs->position = gs->size_max * gs->item_position / gs->items_max;
536 gs->position_max = gs->size_max - gs->size;
537 gs->correction = gs->size_max / gs->items_max / 2;
539 /* finetuning for maximal right/bottom position */
540 if (gs->item_position == gs->items_max - gs->items_visible)
541 gs->position = gs->position_max;
545 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
549 va_start(ap, first_tag);
550 HandleGadgetTags(gi, first_tag, ap);
556 void RedrawGadget(struct GadgetInfo *gi)
559 DrawGadget(gi, gi->state, DG_DIRECT);
562 struct GadgetInfo *CreateGadget(int first_tag, ...)
564 struct GadgetInfo *new_gadget = checked_malloc(sizeof(struct GadgetInfo));
567 /* always start with reliable default values */
568 memset(new_gadget, 0, sizeof(struct GadgetInfo)); /* zero all fields */
569 new_gadget->id = getNewGadgetID();
570 new_gadget->callback_info = default_callback_info;
571 new_gadget->callback_action = default_callback_action;
573 va_start(ap, first_tag);
574 HandleGadgetTags(new_gadget, first_tag, ap);
577 /* insert new gadget into global gadget list */
578 if (gadget_list_last_entry)
580 gadget_list_last_entry->next = new_gadget;
581 gadget_list_last_entry = gadget_list_last_entry->next;
584 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
589 void FreeGadget(struct GadgetInfo *gi)
591 struct GadgetInfo *gi_previous = gadget_list_first_entry;
593 while (gi_previous && gi_previous->next != gi)
594 gi_previous = gi_previous->next;
596 if (gi == gadget_list_first_entry)
597 gadget_list_first_entry = gi->next;
599 if (gi == gadget_list_last_entry)
600 gadget_list_last_entry = gi_previous;
602 gi_previous->next = gi->next;
606 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
608 if (gi->type != GD_TYPE_TEXTINPUT_NUMERIC)
611 gi->text.number_value = atoi(gi->text.value);
613 if (gi->text.number_value < gi->text.number_min)
614 gi->text.number_value = gi->text.number_min;
615 if (gi->text.number_value > gi->text.number_max)
616 gi->text.number_value = gi->text.number_max;
618 sprintf(gi->text.value, "%d", gi->text.number_value);
620 if (gi->text.cursor_position < 0)
621 gi->text.cursor_position = 0;
622 else if (gi->text.cursor_position > strlen(gi->text.value))
623 gi->text.cursor_position = strlen(gi->text.value);
626 /* global pointer to gadget actually in use (when mouse button pressed) */
627 static struct GadgetInfo *last_gi = NULL;
629 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
631 if (gi == NULL || gi->mapped)
637 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
640 void MapGadget(struct GadgetInfo *gi)
642 MapGadgetExt(gi, TRUE);
645 void UnmapGadget(struct GadgetInfo *gi)
647 if (gi == NULL || !gi->mapped)
656 #define MAX_NUM_GADGETS 1024
657 #define MULTIMAP_UNMAP (1 << 0)
658 #define MULTIMAP_REMAP (1 << 1)
659 #define MULTIMAP_REDRAW (1 << 2)
660 #define MULTIMAP_PLAYFIELD (1 << 3)
661 #define MULTIMAP_DOOR_1 (1 << 4)
662 #define MULTIMAP_DOOR_2 (1 << 5)
663 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
667 static void MultiMapGadgets(int mode)
669 struct GadgetInfo *gi = gadget_list_first_entry;
670 static boolean map_state[MAX_NUM_GADGETS];
675 if ((mode & MULTIMAP_PLAYFIELD &&
676 gi->x < gfx.sx + gfx.sxsize) ||
677 (mode & MULTIMAP_DOOR_1 &&
678 gi->x >= gfx.dx && gi->y < gfx.dy + gfx.dysize) ||
679 (mode & MULTIMAP_DOOR_2 &&
680 gi->x >= gfx.dx && gi->y > gfx.dy + gfx.dysize) ||
681 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
683 if (mode & MULTIMAP_UNMAP)
685 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
690 if (map_state[map_count++ % MAX_NUM_GADGETS])
691 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
699 void UnmapAllGadgets()
701 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
704 void RemapAllGadgets()
706 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
709 boolean anyTextGadgetActive()
711 return (last_gi && last_gi->type & GD_TYPE_TEXTINPUT && last_gi->mapped);
714 void ClickOnGadget(struct GadgetInfo *gi, int button)
716 /* simulate releasing mouse button over last gadget, if still pressed */
718 HandleGadgets(-1, -1, 0);
720 /* simulate pressing mouse button over specified gadget */
721 HandleGadgets(gi->x, gi->y, button);
723 /* simulate releasing mouse button over specified gadget */
724 HandleGadgets(gi->x, gi->y, 0);
727 void HandleGadgets(int mx, int my, int button)
729 static struct GadgetInfo *last_info_gi = NULL;
730 static unsigned long pressed_delay = 0;
731 static int last_button = 0;
732 static int last_mx = 0, last_my = 0;
733 int scrollbar_mouse_pos = 0;
734 struct GadgetInfo *new_gi, *gi;
736 boolean release_event;
737 boolean mouse_moving;
738 boolean gadget_pressed;
739 boolean gadget_pressed_repeated;
740 boolean gadget_moving;
741 boolean gadget_moving_inside;
742 boolean gadget_moving_off_borders;
743 boolean gadget_released;
744 boolean gadget_released_inside;
745 boolean gadget_released_off_borders;
746 boolean changed_position = FALSE;
748 /* check if there are any gadgets defined */
749 if (gadget_list_first_entry == NULL)
752 /* check which gadget is under the mouse pointer */
753 new_gi = getGadgetInfoFromMousePosition(mx, my);
755 /* check if button state has changed since last invocation */
756 press_event = (button != 0 && last_button == 0);
757 release_event = (button == 0 && last_button != 0);
758 last_button = button;
760 /* check if mouse has been moved since last invocation */
761 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
765 /* special treatment for text and number input gadgets */
766 if (anyTextGadgetActive() && button != 0 && !motion_status)
768 struct GadgetInfo *gi = last_gi;
770 if (new_gi == last_gi)
772 /* if mouse button pressed inside activated text gadget, set cursor */
773 gi->text.cursor_position =
774 (mx - gi->x - gi->border.size) /
775 getFontWidth(FS_SMALL, gi->text.font_type);
777 if (gi->text.cursor_position < 0)
778 gi->text.cursor_position = 0;
779 else if (gi->text.cursor_position > strlen(gi->text.value))
780 gi->text.cursor_position = strlen(gi->text.value);
782 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
786 /* if mouse button pressed outside text input gadget, deactivate it */
787 CheckRangeOfNumericInputGadget(gi);
788 DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
790 gi->event.type = GD_EVENT_TEXT_LEAVING;
792 if (gi->event_mask & GD_EVENT_TEXT_LEAVING)
793 gi->callback_action(gi);
800 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
801 gadget_pressed_repeated =
802 (button != 0 && last_gi != NULL && new_gi == last_gi);
804 gadget_released = (release_event && last_gi != NULL);
805 gadget_released_inside = (gadget_released && new_gi == last_gi);
806 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
808 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
809 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
810 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
812 /* if new gadget pressed, store this gadget */
816 /* 'gi' is actually handled gadget */
819 /* if gadget is scrollbar, choose mouse position value */
820 if (gi && gi->type & GD_TYPE_SCROLLBAR)
821 scrollbar_mouse_pos =
822 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
824 /* if mouse button released, no gadget needs to be handled anymore */
825 if (button == 0 && last_gi && !(last_gi->type & GD_TYPE_TEXTINPUT))
828 /* modify event position values even if no gadget is pressed */
829 if (button == 0 && !release_event)
834 int last_x = gi->event.x;
835 int last_y = gi->event.y;
837 gi->event.x = mx - gi->x;
838 gi->event.y = my - gi->y;
840 if (gi->type == GD_TYPE_DRAWING_AREA)
842 gi->event.x /= gi->drawing.item_xsize;
843 gi->event.y /= gi->drawing.item_ysize;
845 if (last_x != gi->event.x || last_y != gi->event.y)
846 changed_position = TRUE;
850 /* handle gadget popup info text */
851 if (last_info_gi != new_gi ||
852 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
854 last_info_gi = new_gi;
856 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
858 new_gi->event.type = 0;
859 new_gi->callback_info(new_gi);
862 default_callback_info(NULL);
867 if (gi->type == GD_TYPE_CHECK_BUTTON)
869 gi->checked = !gi->checked;
871 else if (gi->type == GD_TYPE_RADIO_BUTTON)
873 struct GadgetInfo *rgi = gadget_list_first_entry;
878 rgi->type == GD_TYPE_RADIO_BUTTON &&
879 rgi->radio_nr == gi->radio_nr &&
882 rgi->checked = FALSE;
883 DrawGadget(rgi, DG_UNPRESSED, DG_DIRECT);
891 else if (gi->type & GD_TYPE_SCROLLBAR)
895 if (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL)
906 if (mpos >= gpos + gi->scrollbar.position &&
907 mpos < gpos + gi->scrollbar.position + gi->scrollbar.size)
910 gi->scrollbar.drag_position =
911 scrollbar_mouse_pos - gi->scrollbar.position;
915 /* click scrollbar one scrollbar length up/left or down/right */
917 struct GadgetScrollbar *gs = &gi->scrollbar;
918 int old_item_position = gs->item_position;
920 changed_position = FALSE;
923 gs->items_visible * (mpos < gpos + gi->scrollbar.position ? -1 : +1);
925 if (gs->item_position < 0)
926 gs->item_position = 0;
927 if (gs->item_position > gs->items_max - gs->items_visible)
928 gs->item_position = gs->items_max - gs->items_visible;
930 if (old_item_position != gs->item_position)
932 gi->event.item_position = gs->item_position;
933 changed_position = TRUE;
936 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
939 gi->state = GD_BUTTON_UNPRESSED;
940 gi->event.type = GD_EVENT_MOVING;
941 gi->event.off_borders = FALSE;
943 if (gi->event_mask & GD_EVENT_MOVING && changed_position)
944 gi->callback_action(gi);
946 /* don't handle this scrollbar anymore while mouse button pressed */
953 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
955 gi->state = GD_BUTTON_PRESSED;
956 gi->event.type = GD_EVENT_PRESSED;
957 gi->event.button = button;
958 gi->event.off_borders = FALSE;
960 /* initialize delay counter */
961 DelayReached(&pressed_delay, 0);
963 if (gi->event_mask & GD_EVENT_PRESSED)
964 gi->callback_action(gi);
967 if (gadget_pressed_repeated)
969 gi->event.type = GD_EVENT_PRESSED;
971 if (gi->event_mask & GD_EVENT_REPEATED &&
972 DelayReached(&pressed_delay, GADGET_FRAME_DELAY))
973 gi->callback_action(gi);
978 if (gi->type & GD_TYPE_BUTTON)
980 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
981 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
982 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
983 DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
986 if (gi->type & GD_TYPE_SCROLLBAR)
988 struct GadgetScrollbar *gs = &gi->scrollbar;
989 int old_item_position = gs->item_position;
991 gs->position = scrollbar_mouse_pos - gs->drag_position;
993 if (gs->position < 0)
995 if (gs->position > gs->position_max)
996 gs->position = gs->position_max;
999 gs->items_max * (gs->position + gs->correction) / gs->size_max;
1001 if (gs->item_position < 0)
1002 gs->item_position = 0;
1003 if (gs->item_position > gs->items_max - 1)
1004 gs->item_position = gs->items_max - 1;
1006 if (old_item_position != gs->item_position)
1008 gi->event.item_position = gs->item_position;
1009 changed_position = TRUE;
1012 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
1015 gi->state = (gadget_moving_inside || gi->type & GD_TYPE_SCROLLBAR ?
1016 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
1017 gi->event.type = GD_EVENT_MOVING;
1018 gi->event.off_borders = gadget_moving_off_borders;
1020 if (gi->event_mask & GD_EVENT_MOVING && changed_position &&
1021 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
1022 gi->callback_action(gi);
1025 if (gadget_released_inside)
1027 if (!(gi->type & GD_TYPE_TEXTINPUT))
1028 DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
1030 gi->state = GD_BUTTON_UNPRESSED;
1031 gi->event.type = GD_EVENT_RELEASED;
1033 if (gi->event_mask & GD_EVENT_RELEASED)
1034 gi->callback_action(gi);
1037 if (gadget_released_off_borders)
1039 if (gi->type & GD_TYPE_SCROLLBAR)
1040 DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
1042 gi->event.type = GD_EVENT_RELEASED;
1044 if (gi->event_mask & GD_EVENT_RELEASED &&
1045 gi->event_mask & GD_EVENT_OFF_BORDERS)
1046 gi->callback_action(gi);
1050 void HandleGadgetsKeyInput(Key key)
1052 struct GadgetInfo *gi = last_gi;
1053 char text[MAX_GADGET_TEXTSIZE];
1057 boolean legal_letter;
1059 if (gi == NULL || !(gi->type & GD_TYPE_TEXTINPUT) || !gi->mapped)
1062 text_length = strlen(gi->text.value);
1063 cursor_pos = gi->text.cursor_position;
1064 letter = getCharFromKey(key);
1065 legal_letter = (gi->type == GD_TYPE_TEXTINPUT_NUMERIC ?
1066 letter >= '0' && letter <= '9' :
1069 if (legal_letter && text_length < gi->text.size)
1071 strcpy(text, gi->text.value);
1072 strcpy(&gi->text.value[cursor_pos + 1], &text[cursor_pos]);
1073 gi->text.value[cursor_pos] = letter;
1074 gi->text.cursor_position++;
1075 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
1077 else if (key == KSYM_Left && cursor_pos > 0)
1079 gi->text.cursor_position--;
1080 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
1082 else if (key == KSYM_Right && cursor_pos < text_length)
1084 gi->text.cursor_position++;
1085 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
1087 else if (key == KSYM_BackSpace && cursor_pos > 0)
1089 strcpy(text, gi->text.value);
1090 strcpy(&gi->text.value[cursor_pos - 1], &text[cursor_pos]);
1091 gi->text.cursor_position--;
1092 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
1094 else if (key == KSYM_Delete && cursor_pos < text_length)
1096 strcpy(text, gi->text.value);
1097 strcpy(&gi->text.value[cursor_pos], &text[cursor_pos + 1]);
1098 DrawGadget(gi, DG_PRESSED, DG_DIRECT);
1100 else if (key == KSYM_Return)
1102 CheckRangeOfNumericInputGadget(gi);
1103 DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
1105 gi->event.type = GD_EVENT_TEXT_RETURN;
1107 if (gi->event_mask & GD_EVENT_TEXT_RETURN)
1108 gi->callback_action(gi);