1 // ============================================================================
2 // Artsoft Retro-Game Library
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
7 // https://www.artsoft.org/
8 // ----------------------------------------------------------------------------
10 // ============================================================================
21 // values for DrawGadget()
22 #define DG_UNPRESSED 0
28 #define OPTION_TEXT_SELECTABLE(g, t) \
29 (t[0] != g->selectbox.char_unselectable && \
32 #define CURRENT_OPTION_SELECTABLE(g) \
33 OPTION_TEXT_SELECTABLE(g, g->selectbox.options[g->selectbox.current_index].text)
36 static struct GadgetInfo *gadget_list_first_entry = NULL;
37 static struct GadgetInfo *gadget_list_last_entry = NULL;
38 static struct GadgetInfo *last_info_gi = NULL;
39 static int next_free_gadget_id = 1;
40 static boolean gadget_id_wrapped = FALSE;
41 static int gadget_screen_border_right = -1;
42 static int gadget_screen_border_bottom = -1;
44 static void (*PlayGadgetSoundActivating)(void) = NULL;
45 static void (*PlayGadgetSoundSelecting)(void) = NULL;
48 void InitGadgetsSoundCallback(void (*activating_function)(void),
49 void (*selecting_function)(void))
51 PlayGadgetSoundActivating = activating_function;
52 PlayGadgetSoundSelecting = selecting_function;
55 void InitGadgetScreenBorders(int border_right, int border_bottom)
57 gadget_screen_border_right = border_right;
58 gadget_screen_border_bottom = border_bottom;
61 static int getGadgetScreenBorderRight(void)
63 if (gadget_screen_border_right < gfx.sx ||
64 gadget_screen_border_right > gfx.sx + gfx.sxsize)
65 return gfx.sx + gfx.sxsize;
67 return gadget_screen_border_right;
70 static int getGadgetScreenBorderBottom(void)
72 if (gadget_screen_border_bottom < gfx.sy ||
73 gadget_screen_border_bottom > gfx.sy + gfx.sysize)
74 return gfx.sy + gfx.sysize;
76 return gadget_screen_border_bottom;
79 static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
81 struct GadgetInfo *gi = gadget_list_first_entry;
83 while (gi && gi->id != id)
89 static int getNewGadgetID(void)
91 int id = next_free_gadget_id++;
93 if (next_free_gadget_id <= 0) // counter overrun
95 gadget_id_wrapped = TRUE; // now we must check each ID
96 next_free_gadget_id = 0;
99 if (gadget_id_wrapped)
101 next_free_gadget_id++;
102 while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
103 next_free_gadget_id++;
106 if (next_free_gadget_id <= 0) // cannot get new gadget id
107 Fail("too much gadgets -- this should not happen");
112 static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my,
115 struct GadgetInfo *gi;
117 // first check for scrollbars in case of mouse scroll wheel button events
118 if (IS_WHEEL_BUTTON(button))
120 // real horizontal wheel or vertical wheel with modifier key pressed
121 boolean check_horizontal = (IS_WHEEL_BUTTON_HORIZONTAL(button) ||
122 GetKeyModState() & KMOD_Shift);
124 // check for the first active scrollbar directly under the mouse pointer
125 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
127 if (gi->mapped && gi->active &&
128 (gi->type & GD_TYPE_SCROLLBAR) &&
129 mx >= gi->x && mx < gi->x + gi->width &&
130 my >= gi->y && my < gi->y + gi->height)
134 // check for the first active scrollbar with matching mouse wheel area
135 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
137 if (gi->mapped && gi->active &&
138 ((gi->type & GD_TYPE_SCROLLBAR_HORIZONTAL && check_horizontal) ||
139 (gi->type & GD_TYPE_SCROLLBAR_VERTICAL && !check_horizontal)) &&
140 mx >= gi->wheelarea.x && mx < gi->wheelarea.x + gi->wheelarea.width &&
141 my >= gi->wheelarea.y && my < gi->wheelarea.y + gi->wheelarea.height)
145 // no active scrollbar found -- ignore this scroll wheel button event
149 // open selectboxes may overlap other active gadgets, so check them first
150 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
152 if (gi->mapped && gi->active &&
153 gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
154 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
155 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
159 // full text areas may overlap other active gadgets, so check them first
160 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
162 if (gi->mapped && gi->active &&
163 gi->type & GD_TYPE_TEXT_AREA && gi->textarea.full_open &&
164 mx >= gi->textarea.full_x && mx < gi->textarea.full_x + gi->width &&
165 my >= gi->textarea.full_y && my < gi->textarea.full_y + gi->height)
169 // check all other gadgets
170 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
172 if (gi->mapped && gi->active &&
173 mx >= gi->x && mx < gi->x + gi->width &&
174 my >= gi->y && my < gi->y + gi->height)
181 static void setTextAreaCursorExt(struct GadgetInfo *gi, boolean set_cursor_pos)
183 char *text = gi->textarea.value;
184 int area_xsize = gi->textarea.xsize;
185 int area_ysize = gi->textarea.ysize;
186 int cursor_position = gi->textarea.cursor_position;
187 int cursor_x = gi->textarea.cursor_x;
188 int cursor_y = gi->textarea.cursor_y;
195 if (set_cursor_pos) // x/y => position
197 if (y == cursor_y && (x == cursor_x || (x < cursor_x && *text == '\n')))
200 else // position => x/y
202 if (pos == cursor_position)
206 if (x + 1 >= area_xsize || *text == '\n')
208 if (y + 1 >= area_ysize)
221 gi->textarea.cursor_x = x;
222 gi->textarea.cursor_y = y;
223 gi->textarea.cursor_x_preferred = x;
224 gi->textarea.cursor_position = pos;
227 static void setTextAreaCursorXY(struct GadgetInfo *gi, int x, int y)
229 gi->textarea.cursor_x = x;
230 gi->textarea.cursor_y = y;
232 setTextAreaCursorExt(gi, TRUE);
235 static void setTextAreaCursorPosition(struct GadgetInfo *gi, int pos)
237 gi->textarea.cursor_position = pos;
239 setTextAreaCursorExt(gi, FALSE);
242 static void default_callback_info(void *ptr)
247 static void default_callback_action(void *ptr)
252 static void DoGadgetCallbackAction(struct GadgetInfo *gi, boolean changed)
254 if (changed || gi->callback_action_always)
255 gi->callback_action(gi);
258 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
260 struct GadgetDesign *gd;
261 int state = (pressed ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
262 boolean redraw_selectbox = FALSE;
264 if (gi == NULL || gi->deactivated)
267 if (gi->overlay_touch_button) // will be drawn later (as texture)
270 gd = (!gi->active ? &gi->alt_design[state] :
271 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
275 case GD_TYPE_NORMAL_BUTTON:
276 case GD_TYPE_CHECK_BUTTON:
277 case GD_TYPE_CHECK_BUTTON_2:
278 case GD_TYPE_RADIO_BUTTON:
280 BlitBitmapOnBackground(gd->bitmap, drawto,
281 gd->x, gd->y, gi->width, gi->height,
284 if (gi->deco.design.bitmap)
286 // make sure that decoration does not overlap gadget border
287 int deco_x = gi->deco.x + (pressed ? gi->deco.xshift : 0);
288 int deco_y = gi->deco.y + (pressed ? gi->deco.yshift : 0);
289 int deco_width = MIN(gi->deco.width, gi->width - deco_x);
290 int deco_height = MIN(gi->deco.height, gi->height - deco_y);
293 BlitBitmapMasked(gi->deco.design.bitmap, drawto,
294 gi->deco.design.x, gi->deco.design.y,
295 deco_width, deco_height,
296 gi->x + deco_x, gi->y + deco_y);
298 BlitBitmap(gi->deco.design.bitmap, drawto,
299 gi->deco.design.x, gi->deco.design.y,
300 deco_width, deco_height,
301 gi->x + deco_x, gi->y + deco_y);
306 case GD_TYPE_TEXT_BUTTON:
309 int font_nr = (gi->active ? gi->font_active : gi->font);
310 int font_width = getFontWidth(font_nr);
311 int border_x = gi->border.xsize;
312 int border_y = gi->border.ysize;
313 int text_size = strlen(gi->textbutton.value);
314 int text_start = (gi->width - text_size * font_width) / 2;
316 // left part of gadget
317 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
318 border_x, gi->height, gi->x, gi->y);
320 // middle part of gadget
321 for (i = 0; i < gi->textbutton.size; i++)
322 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
323 font_width, gi->height,
324 gi->x + border_x + i * font_width, gi->y);
326 // right part of gadget
327 BlitBitmapOnBackground(gd->bitmap, drawto,
328 gd->x + gi->border.width - border_x, gd->y,
329 border_x, gi->height,
330 gi->x + gi->width - border_x, gi->y);
334 gi->x + text_start + (pressed ? gi->deco.xshift : 0),
335 gi->y + border_y + (pressed ? gi->deco.yshift : 0),
336 gi->textbutton.value, font_nr, BLIT_MASKED);
340 case GD_TYPE_TEXT_INPUT_ALPHANUMERIC:
341 case GD_TYPE_TEXT_INPUT_NUMERIC:
345 char cursor_string[2];
346 char text[MAX_GADGET_TEXTSIZE + 1];
347 int font_nr = (pressed ? gi->font_active : gi->font);
348 int font_width = getFontWidth(font_nr);
349 int border_x = gi->border.xsize;
350 int border_y = gi->border.ysize;
352 // left part of gadget
353 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
354 border_x, gi->height, gi->x, gi->y);
356 // middle part of gadget
357 for (i = 0; i < gi->textinput.size + 1; i++)
358 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
359 font_width, gi->height,
360 gi->x + border_x + i * font_width, gi->y);
362 // right part of gadget
363 BlitBitmapOnBackground(gd->bitmap, drawto,
364 gd->x + gi->border.width - border_x, gd->y,
365 border_x, gi->height,
366 gi->x + gi->width - border_x, gi->y);
369 strcpy(text, gi->textinput.value);
374 gi->x + border_x, gi->y + border_y, text,
375 font_nr, BLIT_MASKED);
377 cursor_letter = gi->textinput.value[gi->textinput.cursor_position];
378 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
379 cursor_string[1] = '\0';
381 // draw cursor, if active
385 gi->textinput.cursor_position * font_width,
386 gi->y + border_y, cursor_string,
387 font_nr, BLIT_INVERSE);
391 case GD_TYPE_TEXT_AREA:
395 char cursor_string[2];
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 gd_height = 2 * border_y + font_height;
404 int width = gi->width;
405 int height = gi->height;
406 int xsize = gi->textarea.xsize;
407 int ysize = gi->textarea.ysize;
409 if (gi->textarea.cropped)
413 x = gi->textarea.full_x;
414 y = gi->textarea.full_y;
416 if (!gi->textarea.full_open)
418 gi->textarea.full_open = TRUE;
420 // save background under fully opened text area
421 BlitBitmap(drawto, gfx.field_save_buffer,
422 gi->textarea.full_x, gi->textarea.full_y,
423 gi->width, gi->height,
424 gi->textarea.full_x, gi->textarea.full_y);
429 width = gi->textarea.crop_width;
430 height = gi->textarea.crop_height;
431 xsize = gi->textarea.crop_xsize;
432 ysize = gi->textarea.crop_ysize;
434 if (gi->textarea.full_open)
436 gi->textarea.full_open = FALSE;
438 // restore background under fully opened text area
439 BlitBitmap(gfx.field_save_buffer, drawto,
440 gi->textarea.full_x, gi->textarea.full_y,
441 gi->width, gi->height,
442 gi->textarea.full_x, gi->textarea.full_y);
447 // top left part of gadget border
448 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
449 border_x, border_y, x, y);
451 // top middle part of gadget border
452 for (i = 0; i < xsize; i++)
453 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
454 font_width, border_y,
455 x + border_x + i * font_width, y);
457 // top right part of gadget border
458 BlitBitmapOnBackground(gd->bitmap, drawto,
459 gd->x + gi->border.width - border_x, gd->y,
461 x + width - border_x, y);
463 // left and right part of gadget border for each row
464 for (i = 0; i < ysize; i++)
466 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
467 border_x, font_height,
468 x, y + border_y + i * font_height);
469 BlitBitmapOnBackground(gd->bitmap, drawto,
470 gd->x + gi->border.width - border_x,
472 border_x, font_height,
473 x + width - border_x,
474 y + border_y + i * font_height);
477 // bottom left part of gadget border
478 BlitBitmapOnBackground(gd->bitmap, drawto,
479 gd->x, gd->y + gd_height - border_y,
481 x, y + height - border_y);
483 // bottom middle part of gadget border
484 for (i = 0; i < xsize; i++)
485 BlitBitmapOnBackground(gd->bitmap, drawto,
487 gd->y + gd_height - border_y,
488 font_width, border_y,
489 x + border_x + i * font_width,
490 y + height - border_y);
492 // bottom right part of gadget border
493 BlitBitmapOnBackground(gd->bitmap, drawto,
494 gd->x + gi->border.width - border_x,
495 gd->y + gd_height - border_y,
497 x + width - border_x,
498 y + height - border_y);
500 ClearRectangleOnBackground(drawto,
503 width - 2 * border_x,
504 height - 2 * border_y);
507 DrawTextArea(x + border_x, y + border_y, gi->textarea.value,
508 font_nr, xsize, -1, ysize, 0,
509 BLIT_ON_BACKGROUND, FALSE, FALSE, FALSE);
511 cursor_letter = gi->textarea.value[gi->textarea.cursor_position];
512 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
513 cursor_string[1] = '\0';
515 // draw cursor, if active
518 x + border_x + gi->textarea.cursor_x * font_width,
519 y + border_y + gi->textarea.cursor_y * font_height,
521 font_nr, BLIT_INVERSE);
525 case GD_TYPE_SELECTBOX:
528 char text[MAX_GADGET_TEXTSIZE + 1];
529 int font_nr_default = (pressed ? gi->font_active : gi->font);
530 int font_nr = font_nr_default;
531 int font_width = getFontWidth(font_nr);
532 int font_height = getFontHeight(font_nr);
533 int border_x = gi->border.xsize;
534 int border_y = gi->border.ysize;
535 int button = gi->border.xsize_selectbutton;
536 int width_inner = gi->border.width - button - 2 * border_x;
537 int box_width = gi->selectbox.width;
538 int box_height = gi->selectbox.height;
540 // left part of gadget
541 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
542 border_x, gi->height, gi->x, gi->y);
544 // middle part of gadget
545 for (i = 0; i < gi->selectbox.size; i++)
546 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
547 font_width, gi->height,
548 gi->x + border_x + i * font_width, gi->y);
550 // button part of gadget
551 BlitBitmapOnBackground(gd->bitmap, drawto,
552 gd->x + border_x + width_inner, gd->y,
554 gi->x + gi->width - border_x - button, gi->y);
556 // right part of gadget
557 BlitBitmapOnBackground(gd->bitmap, drawto,
558 gd->x + gi->border.width - border_x, gd->y,
559 border_x, gi->height,
560 gi->x + gi->width - border_x, gi->y);
563 strncpy(text, gi->selectbox.options[gi->selectbox.index].text,
565 text[gi->selectbox.size] = '\0';
568 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
569 gi->font_unselectable);
572 DrawTextExt(drawto, gi->x + border_x, gi->y + border_y, text,
573 font_nr, BLIT_MASKED);
577 if (!gi->selectbox.open)
579 gi->selectbox.open = TRUE;
580 gi->selectbox.stay_open = FALSE;
581 gi->selectbox.current_index = gi->selectbox.index;
583 // save background under selectbox
584 BlitBitmap(drawto, gfx.field_save_buffer,
585 gi->selectbox.x, gi->selectbox.y,
586 gi->selectbox.width, gi->selectbox.height,
587 gi->selectbox.x, gi->selectbox.y);
590 // draw open selectbox
592 // top left part of gadget border
593 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
595 gi->selectbox.x, gi->selectbox.y);
597 // top middle part of gadget border
598 for (i = 0; i < gi->selectbox.size; i++)
599 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
600 font_width, border_y,
601 gi->selectbox.x + border_x + i * font_width,
604 // top button part of gadget border
605 BlitBitmapOnBackground(gd->bitmap, drawto,
606 gd->x + border_x + width_inner, gd->y,
608 gi->selectbox.x + box_width -border_x -button,
611 // top right part of gadget border
612 BlitBitmapOnBackground(gd->bitmap, drawto,
613 gd->x + gi->border.width - border_x, gd->y,
615 gi->selectbox.x + box_width - border_x,
618 // left and right part of gadget border for each row
619 for (i = 0; i < gi->selectbox.num_values; i++)
621 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
622 border_x, font_height,
624 gi->selectbox.y + border_y + i*font_height);
625 BlitBitmapOnBackground(gd->bitmap, drawto,
626 gd->x + gi->border.width - border_x,
628 border_x, font_height,
629 gi->selectbox.x + box_width - border_x,
630 gi->selectbox.y + border_y + i*font_height);
633 // bottom left part of gadget border
634 BlitBitmapOnBackground(gd->bitmap, drawto,
635 gd->x, gd->y + gi->height - border_y,
638 gi->selectbox.y + box_height - border_y);
640 // bottom middle part of gadget border
641 for (i = 0; i < gi->selectbox.size; i++)
642 BlitBitmapOnBackground(gd->bitmap, drawto,
644 gd->y + gi->height - border_y,
645 font_width, border_y,
646 gi->selectbox.x + border_x + i * font_width,
647 gi->selectbox.y + box_height - border_y);
649 // bottom button part of gadget border
650 BlitBitmapOnBackground(gd->bitmap, drawto,
651 gd->x + border_x + width_inner,
652 gd->y + gi->height - border_y,
654 gi->selectbox.x + box_width -border_x -button,
655 gi->selectbox.y + box_height - border_y);
657 // bottom right part of gadget border
658 BlitBitmapOnBackground(gd->bitmap, drawto,
659 gd->x + gi->border.width - border_x,
660 gd->y + gi->height - border_y,
662 gi->selectbox.x + box_width - border_x,
663 gi->selectbox.y + box_height - border_y);
665 ClearRectangleOnBackground(drawto,
666 gi->selectbox.x + border_x,
667 gi->selectbox.y + border_y,
668 gi->selectbox.width - 2 * border_x,
669 gi->selectbox.height - 2 * border_y);
671 // selectbox text values
672 for (i = 0; i < gi->selectbox.num_values; i++)
674 int mask_mode = BLIT_MASKED;
676 strncpy(text, gi->selectbox.options[i].text, gi->selectbox.size);
677 text[gi->selectbox.size] = '\0';
679 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
680 gi->font_unselectable);
682 if (i == gi->selectbox.current_index &&
683 OPTION_TEXT_SELECTABLE(gi, text))
685 FillRectangle(drawto,
686 gi->selectbox.x + border_x,
687 gi->selectbox.y + border_y + i * font_height,
688 gi->selectbox.width - 2 * border_x, font_height,
689 gi->selectbox.inverse_color);
691 // prevent use of cursor graphic by drawing at least two chars
693 text[gi->selectbox.size] = '\0';
695 mask_mode = BLIT_INVERSE;
699 gi->selectbox.x + border_x,
700 gi->selectbox.y + border_y + i * font_height, text,
704 redraw_selectbox = TRUE;
706 else if (gi->selectbox.open)
708 gi->selectbox.open = FALSE;
710 // restore background under selectbox
711 BlitBitmap(gfx.field_save_buffer, drawto,
712 gi->selectbox.x, gi->selectbox.y,
713 gi->selectbox.width, gi->selectbox.height,
714 gi->selectbox.x, gi->selectbox.y);
716 // redraw closed selectbox
717 DrawGadget(gi, FALSE, FALSE);
719 redraw_selectbox = TRUE;
724 case GD_TYPE_SCROLLBAR_VERTICAL:
728 int ypos = gi->y + gi->scrollbar.position;
729 int design_full = gi->width;
730 int design_body = design_full - 2 * gi->border.ysize;
731 int size_full = gi->scrollbar.size;
732 int size_body = size_full - 2 * gi->border.ysize;
733 int num_steps = size_body / design_body;
734 int step_size_remain = size_body - num_steps * design_body;
736 // clear scrollbar area
737 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
738 gi->width, gi->height);
740 // upper part of gadget
741 BlitBitmapOnBackground(gd->bitmap, drawto,
743 gi->width, gi->border.ysize,
746 // middle part of gadget
747 for (i = 0; i < num_steps; i++)
748 BlitBitmapOnBackground(gd->bitmap, drawto,
749 gd->x, gd->y + gi->border.ysize,
750 gi->width, design_body,
752 ypos + gi->border.ysize + i * design_body);
754 // remaining middle part of gadget
755 if (step_size_remain > 0)
756 BlitBitmapOnBackground(gd->bitmap, drawto,
757 gd->x, gd->y + gi->border.ysize,
758 gi->width, step_size_remain,
760 ypos + gi->border.ysize
761 + num_steps * design_body);
763 // lower part of gadget
764 BlitBitmapOnBackground(gd->bitmap, drawto,
765 gd->x, gd->y + design_full - gi->border.ysize,
766 gi->width, gi->border.ysize,
767 xpos, ypos + size_full - gi->border.ysize);
771 case GD_TYPE_SCROLLBAR_HORIZONTAL:
774 int xpos = gi->x + gi->scrollbar.position;
776 int design_full = gi->height;
777 int design_body = design_full - 2 * gi->border.xsize;
778 int size_full = gi->scrollbar.size;
779 int size_body = size_full - 2 * gi->border.xsize;
780 int num_steps = size_body / design_body;
781 int step_size_remain = size_body - num_steps * design_body;
783 // clear scrollbar area
784 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
785 gi->width, gi->height);
787 // left part of gadget
788 BlitBitmapOnBackground(gd->bitmap, drawto,
790 gi->border.xsize, gi->height,
793 // middle part of gadget
794 for (i = 0; i < num_steps; i++)
795 BlitBitmapOnBackground(gd->bitmap, drawto,
796 gd->x + gi->border.xsize, gd->y,
797 design_body, gi->height,
798 xpos + gi->border.xsize + i * design_body,
801 // remaining middle part of gadget
802 if (step_size_remain > 0)
803 BlitBitmapOnBackground(gd->bitmap, drawto,
804 gd->x + gi->border.xsize, gd->y,
805 step_size_remain, gi->height,
806 xpos + gi->border.xsize
807 + num_steps * design_body,
810 // right part of gadget
811 BlitBitmapOnBackground(gd->bitmap, drawto,
812 gd->x + design_full - gi->border.xsize, gd->y,
813 gi->border.xsize, gi->height,
814 xpos + size_full - gi->border.xsize, ypos);
822 // do not use direct gadget drawing anymore; this worked as a speed-up once,
823 // but would slow things down a lot now the screen is always fully redrawn
828 BlitBitmap(drawto, window,
829 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
831 if (gi->type == GD_TYPE_SELECTBOX && redraw_selectbox)
832 BlitBitmap(drawto, window,
833 gi->selectbox.x, gi->selectbox.y,
834 gi->selectbox.width, gi->selectbox.height,
835 gi->selectbox.x, gi->selectbox.y);
842 redraw_mask |= (IN_GFX_FIELD_FULL(x, y) ? REDRAW_FIELD :
843 IN_GFX_DOOR_1(x, y) ? REDRAW_DOOR_1 :
844 IN_GFX_DOOR_2(x, y) ? REDRAW_DOOR_2 :
845 IN_GFX_DOOR_3(x, y) ? REDRAW_DOOR_3 : REDRAW_ALL);
849 static void SetGadgetPosition_OverlayTouchButton(struct GadgetInfo *gi)
855 gi->x += video.screen_width;
857 gi->y += video.screen_height;
859 gi->x -= video.screen_xoffset;
860 gi->y -= video.screen_yoffset;
863 void SetGadgetsPosition_OverlayTouchButtons(void)
865 struct GadgetInfo *gi;
867 if (gadget_list_first_entry == NULL)
870 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
871 if (gi->overlay_touch_button)
872 SetGadgetPosition_OverlayTouchButton(gi);
875 static void DrawGadget_OverlayTouchButton(struct GadgetInfo *gi)
877 struct GadgetDesign *gd;
878 int state = (gi->state ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
880 if (gi == NULL || gi->deactivated)
883 gd = (!gi->active ? &gi->alt_design[state] :
884 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
886 int x = gi->x + video.screen_xoffset;
887 int y = gi->y + video.screen_yoffset;
888 int alpha = gi->overlay_touch_button_alpha;
889 int alpha_max = SDL_ALPHA_OPAQUE;
890 int alpha_step = ALPHA_FADING_STEPSIZE(alpha_max);
892 // only show mapped overlay touch buttons if touch screen is really used
893 if (gi->mapped && runtime.uses_touch_device)
895 if (alpha < alpha_max)
896 alpha = MIN(alpha + alpha_step, alpha_max);
900 alpha = MAX(0, alpha - alpha_step);
903 gi->overlay_touch_button_alpha = alpha;
910 case GD_TYPE_NORMAL_BUTTON:
911 case GD_TYPE_CHECK_BUTTON:
912 case GD_TYPE_CHECK_BUTTON_2:
913 case GD_TYPE_RADIO_BUTTON:
914 SDL_SetTextureAlphaMod(gd->bitmap->texture_masked, alpha);
915 SDL_SetTextureBlendMode(gd->bitmap->texture_masked, SDL_BLENDMODE_BLEND);
917 BlitToScreenMasked(gd->bitmap, gd->x, gd->y, gi->width, gi->height, x, y);
925 void DrawGadgets_OverlayTouchButtons(void)
927 struct GadgetInfo *gi;
929 if (gadget_list_first_entry == NULL)
932 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
933 if (gi->overlay_touch_button)
934 DrawGadget_OverlayTouchButton(gi);
937 boolean CheckPosition_OverlayTouchButtons(int mx, int my, int button)
939 struct GadgetInfo *gi = getGadgetInfoFromMousePosition(mx, my, button);
941 return (gi != NULL && gi->overlay_touch_button);
944 static int get_minimal_size_for_numeric_input(int minmax_value)
946 int min_size = 1; // value needs at least one digit
949 // add number of digits needed for absolute value
950 for (i = 10; i <= ABS(minmax_value); i *= 10)
953 // if min/max value is negative, add one digit for minus sign
954 if (minmax_value < 0)
960 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
967 while (tag != GDI_END)
972 gi->image_id = va_arg(ap, int);
976 gi->custom_id = va_arg(ap, int);
979 case GDI_CUSTOM_TYPE_ID:
980 gi->custom_type_id = va_arg(ap, int);
985 int max_textsize = MAX_INFO_TEXTSIZE;
986 char *text = va_arg(ap, char *);
989 strncpy(gi->info_text, text, max_textsize);
993 gi->info_text[max_textsize] = '\0';
998 gi->x = gi->orig_x = va_arg(ap, int);
1002 gi->y = gi->orig_y = va_arg(ap, int);
1006 gi->width = va_arg(ap, int);
1010 gi->height = va_arg(ap, int);
1014 gi->type = va_arg(ap, unsigned int);
1018 gi->state = va_arg(ap, unsigned int);
1022 gi->active = (boolean)va_arg(ap, int);
1025 case GDI_DIRECT_DRAW:
1026 gi->direct_draw = (boolean)va_arg(ap, int);
1029 case GDI_OVERLAY_TOUCH_BUTTON:
1030 gi->overlay_touch_button = (boolean)va_arg(ap, int);
1031 if (gi->overlay_touch_button)
1032 SetGadgetPosition_OverlayTouchButton(gi);
1035 case GDI_CALLBACK_ACTION_ALWAYS:
1036 gi->callback_action_always = (boolean)va_arg(ap, int);
1040 gi->checked = (boolean)va_arg(ap, int);
1044 gi->radio_nr = va_arg(ap, unsigned int);
1047 case GDI_NUMBER_VALUE:
1048 gi->textinput.number_value = va_arg(ap, int);
1049 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1050 strcpy(gi->textinput.last_value, gi->textinput.value);
1051 gi->textinput.cursor_position = strlen(gi->textinput.value);
1054 case GDI_NUMBER_MIN:
1055 gi->textinput.number_min = va_arg(ap, int);
1056 if (gi->textinput.number_value < gi->textinput.number_min)
1058 gi->textinput.number_value = gi->textinput.number_min;
1059 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1060 strcpy(gi->textinput.last_value, gi->textinput.value);
1064 case GDI_NUMBER_MAX:
1065 gi->textinput.number_max = va_arg(ap, int);
1066 if (gi->textinput.number_value > gi->textinput.number_max)
1068 gi->textinput.number_value = gi->textinput.number_max;
1069 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1070 strcpy(gi->textinput.last_value, gi->textinput.value);
1074 case GDI_TEXT_VALUE:
1076 int max_textsize = MAX_GADGET_TEXTSIZE;
1078 if (gi->textinput.size)
1079 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE);
1081 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
1082 strcpy(gi->textinput.last_value, gi->textinput.value);
1084 gi->textinput.value[max_textsize] = '\0';
1085 gi->textinput.cursor_position = strlen(gi->textinput.value);
1087 // same tag also used for other gadget definitions
1088 strcpy(gi->textbutton.value, gi->textinput.value);
1089 strcpy(gi->textarea.value, gi->textinput.value);
1090 strcpy(gi->textarea.last_value, gi->textinput.value);
1096 int tag_value = va_arg(ap, int);
1097 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE);
1099 gi->textinput.size = max_textsize;
1100 gi->textinput.value[max_textsize] = '\0';
1101 strcpy(gi->textinput.last_value, gi->textinput.value);
1103 // same tag also used for other gadget definitions
1105 gi->textarea.size = max_textsize;
1106 gi->textarea.value[max_textsize] = '\0';
1107 strcpy(gi->textarea.last_value, gi->textinput.value);
1109 gi->textbutton.size = max_textsize;
1110 gi->textbutton.value[max_textsize] = '\0';
1112 gi->selectbox.size = gi->textinput.size;
1117 gi->font = va_arg(ap, int);
1118 if (gi->font_active == 0)
1119 gi->font_active = gi->font;
1120 if (gi->font_unselectable == 0)
1121 gi->font_unselectable = gi->font;
1124 case GDI_TEXT_FONT_ACTIVE:
1125 gi->font_active = va_arg(ap, int);
1128 case GDI_TEXT_FONT_UNSELECTABLE:
1129 gi->font_unselectable = va_arg(ap, int);
1132 case GDI_SELECTBOX_OPTIONS:
1133 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
1136 case GDI_SELECTBOX_INDEX:
1137 gi->selectbox.index = va_arg(ap, int);
1140 case GDI_SELECTBOX_CHAR_UNSELECTABLE:
1141 gi->selectbox.char_unselectable = (char)va_arg(ap, int);
1144 case GDI_DESIGN_UNPRESSED:
1145 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
1146 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
1147 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
1150 case GDI_DESIGN_PRESSED:
1151 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
1152 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
1153 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
1156 case GDI_ALT_DESIGN_UNPRESSED:
1157 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
1158 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
1159 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
1162 case GDI_ALT_DESIGN_PRESSED:
1163 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
1164 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
1165 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
1168 case GDI_BORDER_SIZE:
1169 gi->border.xsize = va_arg(ap, int);
1170 gi->border.ysize = va_arg(ap, int);
1173 case GDI_BORDER_SIZE_SELECTBUTTON:
1174 gi->border.xsize_selectbutton = va_arg(ap, int);
1177 case GDI_DESIGN_WIDTH:
1178 gi->border.width = va_arg(ap, int);
1181 case GDI_DECORATION_DESIGN:
1182 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
1183 gi->deco.design.x = va_arg(ap, int);
1184 gi->deco.design.y = va_arg(ap, int);
1187 case GDI_DECORATION_POSITION:
1188 gi->deco.x = va_arg(ap, int);
1189 gi->deco.y = va_arg(ap, int);
1192 case GDI_DECORATION_SIZE:
1193 gi->deco.width = va_arg(ap, int);
1194 gi->deco.height = va_arg(ap, int);
1197 case GDI_DECORATION_SHIFTING:
1198 gi->deco.xshift = va_arg(ap, int);
1199 gi->deco.yshift = va_arg(ap, int);
1202 case GDI_DECORATION_MASKED:
1203 gi->deco.masked = (boolean)va_arg(ap, int);
1206 case GDI_EVENT_MASK:
1207 gi->event_mask = va_arg(ap, unsigned int);
1211 gi->drawing.area_xsize = va_arg(ap, int);
1212 gi->drawing.area_ysize = va_arg(ap, int);
1214 // determine dependent values for drawing area gadget, if needed
1215 if (gi->drawing.item_xsize != 0 && gi->drawing.item_ysize != 0)
1217 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1218 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1220 else if (gi->width != 0 && gi->height != 0)
1222 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
1223 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
1226 // same tag also used for other gadget definitions
1227 gi->textarea.xsize = gi->drawing.area_xsize;
1228 gi->textarea.ysize = gi->drawing.area_ysize;
1230 if (gi->type & GD_TYPE_TEXT_AREA) // force recalculation
1239 gi->drawing.item_xsize = va_arg(ap, int);
1240 gi->drawing.item_ysize = va_arg(ap, int);
1242 // determine dependent values for drawing area gadget, if needed
1243 if (gi->drawing.area_xsize != 0 && gi->drawing.area_ysize != 0)
1245 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1246 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1248 else if (gi->width != 0 && gi->height != 0)
1250 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
1251 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
1255 case GDI_SCROLLBAR_ITEMS_MAX:
1256 gi->scrollbar.items_max = va_arg(ap, int);
1259 case GDI_SCROLLBAR_ITEMS_VISIBLE:
1260 gi->scrollbar.items_visible = va_arg(ap, int);
1263 case GDI_SCROLLBAR_ITEM_POSITION:
1264 gi->scrollbar.item_position = va_arg(ap, int);
1267 case GDI_WHEEL_AREA_X:
1268 gi->wheelarea.x = va_arg(ap, int);
1271 case GDI_WHEEL_AREA_Y:
1272 gi->wheelarea.y = va_arg(ap, int);
1275 case GDI_WHEEL_AREA_WIDTH:
1276 gi->wheelarea.width = va_arg(ap, int);
1279 case GDI_WHEEL_AREA_HEIGHT:
1280 gi->wheelarea.height = va_arg(ap, int);
1283 case GDI_CALLBACK_INFO:
1284 gi->callback_info = va_arg(ap, gadget_function);
1287 case GDI_CALLBACK_ACTION:
1288 gi->callback_action = va_arg(ap, gadget_function);
1292 Fail("HandleGadgetTags(): unknown tag %d", tag);
1295 tag = va_arg(ap, int); // read next tag
1298 gi->deactivated = FALSE;
1300 // check if gadget has undefined bitmaps
1301 if (gi->type != GD_TYPE_DRAWING_AREA &&
1302 (gi->design[GD_BUTTON_UNPRESSED].bitmap == NULL ||
1303 gi->design[GD_BUTTON_PRESSED].bitmap == NULL))
1304 gi->deactivated = TRUE;
1306 // check if gadget is placed off-screen (and is no overlay touch button)
1307 if ((gi->x < 0 || gi->y < 0) && !gi->overlay_touch_button)
1308 gi->deactivated = TRUE;
1310 // adjust gadget values in relation to other gadget values
1312 if (gi->type & GD_TYPE_TEXT_INPUT)
1314 int font_nr = gi->font_active;
1315 int font_width = getFontWidth(font_nr);
1316 int font_height = getFontHeight(font_nr);
1317 int border_xsize = gi->border.xsize;
1318 int border_ysize = gi->border.ysize;
1320 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1322 int number_min = gi->textinput.number_min;
1323 int number_max = gi->textinput.number_max;
1324 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1325 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1326 int min_size = MAX(min_size_min, min_size_max);
1328 // expand gadget text input size, if maximal value is too large
1329 if (gi->textinput.size < min_size)
1330 gi->textinput.size = min_size;
1333 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1334 gi->height = 2 * border_ysize + font_height;
1337 if (gi->type & GD_TYPE_SELECTBOX)
1339 int font_nr = gi->font_active;
1340 int font_width = getFontWidth(font_nr);
1341 int font_height = getFontHeight(font_nr);
1342 int border_xsize = gi->border.xsize;
1343 int border_ysize = gi->border.ysize;
1344 int button_size = gi->border.xsize_selectbutton;
1345 int bottom_screen_border = getGadgetScreenBorderBottom();
1349 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1350 gi->height = 2 * border_ysize + font_height;
1352 if (gi->selectbox.options == NULL)
1353 Fail("selectbox gadget incomplete (missing options array)");
1355 gi->selectbox.num_values = 0;
1356 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1357 gi->selectbox.num_values++;
1359 // calculate values for open selectbox
1360 gi->selectbox.width = gi->width;
1361 gi->selectbox.height =
1362 2 * border_ysize + gi->selectbox.num_values * font_height;
1364 gi->selectbox.x = gi->x;
1365 gi->selectbox.y = gi->y + gi->height;
1366 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1367 gi->selectbox.y = gi->y - gi->selectbox.height;
1368 if (gi->selectbox.y < 0)
1369 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1371 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1372 src_x += font_width / 2;
1373 src_y += font_height / 2;
1375 // there may be esoteric cases with missing or too small font bitmap
1376 if (src_bitmap != NULL &&
1377 src_x < src_bitmap->width && src_y < src_bitmap->height)
1378 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1380 // always start with closed selectbox
1381 gi->selectbox.open = FALSE;
1384 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1386 struct GadgetTextInput *text = &gi->textinput;
1387 int value = text->number_value;
1389 text->number_value = (value < text->number_min ? text->number_min :
1390 value > text->number_max ? text->number_max :
1393 sprintf(text->value, "%d", text->number_value);
1396 if (gi->type & GD_TYPE_TEXT_BUTTON)
1398 int font_nr = gi->font_active;
1399 int font_width = getFontWidth(font_nr);
1400 int font_height = getFontHeight(font_nr);
1401 int border_xsize = gi->border.xsize;
1402 int border_ysize = gi->border.ysize;
1404 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1405 gi->height = 2 * border_ysize + font_height;
1408 if (gi->type & GD_TYPE_SCROLLBAR)
1410 struct GadgetScrollbar *gs = &gi->scrollbar;
1411 int scrollbar_size_cmp;
1413 if (gi->width == 0 || gi->height == 0 ||
1414 gs->items_max == 0 || gs->items_visible == 0)
1415 Fail("scrollbar gadget incomplete (missing tags)");
1417 // calculate internal scrollbar values
1418 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1419 gi->width : gi->height);
1420 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1421 gi->height : gi->width);
1423 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1424 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1425 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1427 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1428 gs->position_max = gs->size_max - gs->size;
1429 gs->correction = gs->size_max / gs->items_max / 2;
1431 // finetuning for maximal right/bottom position
1432 if (gs->item_position == gs->items_max - gs->items_visible)
1433 gs->position = gs->position_max;
1436 if (gi->type & GD_TYPE_TEXT_AREA)
1438 int font_nr = gi->font_active;
1439 int font_width = getFontWidth(font_nr);
1440 int font_height = getFontHeight(font_nr);
1441 int border_xsize = gi->border.xsize;
1442 int border_ysize = gi->border.ysize;
1443 int right_screen_border = getGadgetScreenBorderRight();
1444 int bottom_screen_border = getGadgetScreenBorderBottom();
1446 if (gi->width == 0 || gi->height == 0)
1448 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1449 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1453 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1454 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1457 gi->textarea.full_x = gi->x;
1458 gi->textarea.full_y = gi->y;
1459 gi->textarea.crop_width = gi->width;
1460 gi->textarea.crop_height = gi->height;
1461 gi->textarea.crop_xsize = gi->textarea.xsize;
1462 gi->textarea.crop_ysize = gi->textarea.ysize;
1464 gi->textarea.cropped = FALSE;
1466 if (gi->x + gi->width > right_screen_border)
1468 gi->textarea.full_x = MAX(0, right_screen_border - gi->width);
1469 gi->textarea.crop_width = right_screen_border - gi->x;
1470 gi->textarea.crop_xsize =
1471 (gi->textarea.crop_width - 2 * border_xsize) / font_width;
1472 gi->textarea.crop_width =
1473 2 * border_xsize + gi->textarea.crop_xsize * font_width;
1475 gi->textarea.cropped = TRUE;
1478 if (gi->y + gi->height > bottom_screen_border)
1480 gi->textarea.full_y = MAX(0, bottom_screen_border - gi->height);
1481 gi->textarea.crop_height = bottom_screen_border - gi->y;
1482 gi->textarea.crop_ysize =
1483 (gi->textarea.crop_height - 2 * border_ysize) / font_height;
1484 gi->textarea.crop_height =
1485 2 * border_ysize + gi->textarea.crop_ysize * font_height;
1487 gi->textarea.cropped = TRUE;
1490 // always start with unselected text area (which is potentially cropped)
1491 gi->textarea.full_open = FALSE;
1495 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1499 va_start(ap, first_tag);
1500 HandleGadgetTags(gi, first_tag, ap);
1506 void RedrawGadget(struct GadgetInfo *gi)
1508 if (gi == NULL || gi->deactivated)
1512 DrawGadget(gi, gi->state, gi->direct_draw);
1515 struct GadgetInfo *CreateGadget(int first_tag, ...)
1517 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1520 // always start with reliable default values
1521 new_gadget->id = getNewGadgetID();
1522 new_gadget->image_id = -1;
1523 new_gadget->callback_info = default_callback_info;
1524 new_gadget->callback_action = default_callback_action;
1525 new_gadget->active = TRUE;
1526 new_gadget->direct_draw = TRUE;
1527 new_gadget->overlay_touch_button = FALSE;
1528 new_gadget->overlay_touch_button_alpha = 0;
1530 new_gadget->next = NULL;
1532 va_start(ap, first_tag);
1533 HandleGadgetTags(new_gadget, first_tag, ap);
1536 // insert new gadget into global gadget list
1537 if (gadget_list_last_entry)
1539 gadget_list_last_entry->next = new_gadget;
1540 gadget_list_last_entry = gadget_list_last_entry->next;
1543 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1548 void FreeGadget(struct GadgetInfo *gi)
1550 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1555 // prevent "last_info_gi" from pointing to memory that will be freed
1556 if (last_info_gi == gi)
1557 last_info_gi = NULL;
1559 while (gi_previous != NULL && gi_previous->next != gi)
1560 gi_previous = gi_previous->next;
1562 if (gi == gadget_list_first_entry)
1563 gadget_list_first_entry = gi->next;
1565 if (gi == gadget_list_last_entry)
1566 gadget_list_last_entry = gi_previous;
1568 if (gi_previous != NULL)
1569 gi_previous->next = gi->next;
1574 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1576 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1579 gi->textinput.number_value = atoi(gi->textinput.value);
1581 if (gi->textinput.number_value < gi->textinput.number_min)
1582 gi->textinput.number_value = gi->textinput.number_min;
1583 if (gi->textinput.number_value > gi->textinput.number_max)
1584 gi->textinput.number_value = gi->textinput.number_max;
1586 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1588 if (gi->textinput.cursor_position < 0)
1589 gi->textinput.cursor_position = 0;
1590 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1591 gi->textinput.cursor_position = strlen(gi->textinput.value);
1594 // global pointer to gadget actually in use (when mouse button pressed)
1595 static struct GadgetInfo *last_gi = NULL;
1597 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1599 if (gi == NULL || gi->deactivated || gi->mapped)
1602 // do not map overlay touch buttons if touch screen is not used
1603 if (gi->overlay_touch_button && !runtime.uses_touch_device)
1609 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1612 void MapGadget(struct GadgetInfo *gi)
1614 MapGadgetExt(gi, TRUE);
1617 void UnmapGadget(struct GadgetInfo *gi)
1619 if (gi == NULL || gi->deactivated || !gi->mapped)
1628 #define MAX_NUM_GADGETS 1024
1629 #define MULTIMAP_UNMAP (1 << 0)
1630 #define MULTIMAP_REMAP (1 << 1)
1631 #define MULTIMAP_REDRAW (1 << 2)
1632 #define MULTIMAP_PLAYFIELD (1 << 3)
1633 #define MULTIMAP_DOOR_1 (1 << 4)
1634 #define MULTIMAP_DOOR_2 (1 << 5)
1635 #define MULTIMAP_DOOR_3 (1 << 6)
1636 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1641 static void MultiMapGadgets(int mode)
1643 struct GadgetInfo *gi = gadget_list_first_entry;
1644 static boolean map_state[MAX_NUM_GADGETS];
1652 if ((mode & MULTIMAP_PLAYFIELD && IN_GFX_FIELD_FULL(x, y)) ||
1653 (mode & MULTIMAP_DOOR_1 && IN_GFX_DOOR_1(x, y)) ||
1654 (mode & MULTIMAP_DOOR_2 && IN_GFX_DOOR_2(x, y)) ||
1655 (mode & MULTIMAP_DOOR_3 && IN_GFX_DOOR_3(x, y)) ||
1656 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1658 if (mode & MULTIMAP_UNMAP)
1660 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1665 if (map_state[map_count++ % MAX_NUM_GADGETS])
1666 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1674 void UnmapAllGadgets(void)
1676 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1679 void RemapAllGadgets(void)
1681 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1684 boolean anyTextInputGadgetActive(void)
1686 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1689 boolean anyTextAreaGadgetActive(void)
1691 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1694 boolean anySelectboxGadgetActive(void)
1696 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1699 boolean anyScrollbarGadgetActive(void)
1701 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1704 boolean anyTextGadgetActive(void)
1706 return (anyTextInputGadgetActive() ||
1707 anyTextAreaGadgetActive() ||
1708 anySelectboxGadgetActive());
1711 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1713 return (gi != NULL &&
1714 gi->type & GD_TYPE_SELECTBOX &&
1715 mx >= gi->x && mx < gi->x + gi->width &&
1716 my >= gi->y && my < gi->y + gi->height);
1719 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1721 return (gi != NULL &&
1722 gi->type & GD_TYPE_SELECTBOX &&
1723 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1724 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1727 void ClickOnGadget(struct GadgetInfo *gi, int button)
1729 if (gi == NULL || gi->deactivated || !gi->mapped)
1732 // simulate releasing mouse button over last gadget, if still pressed
1734 HandleGadgets(-1, -1, 0);
1739 // set cursor position to the end of the text for text input gadgets
1740 if (gi->type & GD_TYPE_TEXT_INPUT)
1741 x = gi->x + gi->width - 1;
1743 // simulate pressing mouse button over specified gadget
1744 HandleGadgets(x, y, button);
1746 // simulate releasing mouse button over specified gadget
1747 HandleGadgets(x, y, 0);
1750 boolean HandleGadgets(int mx, int my, int button)
1752 static DelayCounter pressed_delay = { GADGET_FRAME_DELAY };
1753 static int last_button = 0;
1754 static int last_mx = 0, last_my = 0;
1755 static int pressed_mx = 0, pressed_my = 0;
1756 static boolean keep_selectbox_open = FALSE;
1757 static boolean gadget_stopped = FALSE;
1758 int scrollbar_mouse_pos = 0;
1759 struct GadgetInfo *new_gi, *gi;
1760 boolean press_event;
1761 boolean release_event;
1762 boolean mouse_moving;
1763 boolean mouse_inside_select_line;
1764 boolean mouse_inside_select_area;
1765 boolean mouse_released_where_pressed;
1766 boolean gadget_pressed;
1767 boolean gadget_pressed_repeated;
1768 boolean gadget_pressed_off_borders;
1769 boolean gadget_pressed_inside_select_line;
1770 boolean gadget_pressed_delay_reached;
1771 boolean gadget_moving;
1772 boolean gadget_moving_inside;
1773 boolean gadget_moving_off_borders;
1774 boolean gadget_draggable;
1775 boolean gadget_dragging;
1776 boolean gadget_released;
1777 boolean gadget_released_inside;
1778 boolean gadget_released_inside_select_area;
1779 boolean gadget_released_off_borders;
1780 boolean changed_position = FALSE;
1782 // check if there are any gadgets defined
1783 if (gadget_list_first_entry == NULL)
1786 // simulated release of mouse button over last gadget
1787 if (mx == -1 && my == -1 && button == 0)
1793 // check which gadget is under the mouse pointer
1794 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1796 // check if button state has changed since last invocation
1797 press_event = (button != 0 && last_button == 0);
1798 release_event = (button == 0 && last_button != 0);
1799 last_button = button;
1801 // check if mouse has been moved since last invocation
1802 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1806 if (press_event && new_gi != last_gi)
1812 mouse_released_where_pressed =
1813 (release_event && mx == pressed_mx && my == pressed_my);
1815 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1816 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1818 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1820 gadget_pressed_inside_select_line =
1821 (press_event && new_gi != NULL &&
1822 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1823 insideSelectboxLine(new_gi, mx, my));
1825 // if mouse button pressed outside text or selectbox gadget, deactivate it
1826 if (anyTextGadgetActive() &&
1827 (gadget_pressed_off_borders ||
1828 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1830 struct GadgetInfo *gi = last_gi;
1831 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
1833 // check if text input gadget has changed its value
1834 if (gi->type & GD_TYPE_TEXT_INPUT)
1836 CheckRangeOfNumericInputGadget(gi);
1838 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1839 strcpy(gi->textinput.last_value, gi->textinput.value);
1841 gadget_changed = FALSE;
1844 // check if text area gadget has changed its value
1845 if (gi->type & GD_TYPE_TEXT_AREA)
1847 if (!strEqual(gi->textarea.last_value, gi->textarea.value))
1848 strcpy(gi->textarea.last_value, gi->textarea.value);
1850 gadget_changed = FALSE;
1853 // selectbox does not change its value when closed by clicking outside
1854 if (gi->type & GD_TYPE_SELECTBOX)
1855 gadget_changed = FALSE;
1857 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1859 gi->event.type = GD_EVENT_TEXT_LEAVING;
1861 if (!(gi->type & GD_TYPE_SELECTBOX))
1862 DoGadgetCallbackAction(gi, gadget_changed);
1866 if (gadget_pressed_inside_select_line)
1873 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1874 gadget_pressed_repeated =
1875 (button != 0 && last_gi != NULL && new_gi == last_gi);
1877 gadget_pressed_delay_reached =
1878 DelayReached(&pressed_delay);
1880 gadget_released = (release_event && last_gi != NULL);
1881 gadget_released_inside = (gadget_released && new_gi == last_gi);
1882 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1884 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1885 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1886 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1888 // when handling selectbox, set additional state values
1889 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1890 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1892 gadget_released_inside_select_area = FALSE;
1894 // setting state for handling over-large selectbox
1895 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1896 keep_selectbox_open = FALSE;
1898 // if new gadget pressed, store this gadget
1902 // 'gi' is actually handled gadget
1905 // if gadget is scrollbar, choose mouse position value
1906 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1907 scrollbar_mouse_pos =
1908 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1910 // if mouse button released, no gadget needs to be handled anymore
1911 if (gadget_released)
1913 if (gi->type & GD_TYPE_SELECTBOX &&
1914 (keep_selectbox_open ||
1915 mouse_released_where_pressed ||
1916 !gadget_released_inside_select_area ||
1917 !CURRENT_OPTION_SELECTABLE(gi))) // selectbox stays open
1919 gi->selectbox.stay_open = TRUE;
1923 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1924 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
1928 // modify event position values even if no gadget is pressed
1929 if (button == 0 && !release_event)
1932 // if new gadget or if no gadget was pressed, release stopped processing
1933 if (gadget_pressed || new_gi == NULL)
1934 gadget_stopped = FALSE;
1936 // if gadget was stopped while being handled, stop gadget processing here
1942 int last_x = gi->event.x;
1943 int last_y = gi->event.y;
1944 int last_mx = gi->event.mx;
1945 int last_my = gi->event.my;
1947 gi->event.x = gi->event.mx = mx - gi->x;
1948 gi->event.y = gi->event.my = my - gi->y;
1950 if (gi->type == GD_TYPE_DRAWING_AREA)
1952 gi->event.x /= gi->drawing.item_xsize;
1953 gi->event.y /= gi->drawing.item_ysize;
1955 if (last_x != gi->event.x || last_y != gi->event.y ||
1956 ((last_mx != gi->event.mx || last_my != gi->event.my) &&
1957 gi->event_mask & GD_EVENT_PIXEL_PRECISE))
1958 changed_position = TRUE;
1960 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1962 int old_cursor_position = gi->textinput.cursor_position;
1964 // if mouse button pressed inside activated text gadget, set cursor
1965 gi->textinput.cursor_position =
1966 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1968 if (gi->textinput.cursor_position < 0)
1969 gi->textinput.cursor_position = 0;
1970 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1971 gi->textinput.cursor_position = strlen(gi->textinput.value);
1973 if (gi->textinput.cursor_position != old_cursor_position)
1974 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1977 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1979 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1981 int old_cursor_position = gi->textarea.cursor_position;
1982 int gadget_x = mx - gi->textarea.full_x - gi->border.xsize;
1983 int gadget_y = my - gi->textarea.full_y - gi->border.ysize;
1984 int x = gadget_x / getFontWidth(gi->font);
1985 int y = gadget_y / getFontHeight(gi->font);
1987 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1988 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1990 setTextAreaCursorXY(gi, x, y);
1992 if (gi->textarea.cursor_position != old_cursor_position)
1993 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1996 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1998 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1999 !keep_selectbox_open)
2001 int old_index = gi->selectbox.current_index;
2003 // if mouse moving inside activated selectbox, select value
2004 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
2005 gi->selectbox.current_index =
2006 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
2008 if (gi->selectbox.current_index < 0)
2009 gi->selectbox.current_index = 0;
2010 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
2011 gi->selectbox.current_index = gi->selectbox.num_values - 1;
2013 if (gi->selectbox.current_index != old_index)
2014 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2018 // handle gadget popup info text
2019 if (last_info_gi != new_gi ||
2020 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
2022 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
2024 new_gi->event.type = GD_EVENT_INFO_ENTERING;
2025 new_gi->callback_info(new_gi);
2027 else if (last_info_gi != NULL && last_info_gi->mapped)
2029 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
2030 last_info_gi->callback_info(last_info_gi);
2033 last_info_gi = new_gi;
2036 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
2038 // reset drag position for newly pressed scrollbar to "not dragging"
2039 if (gadget_pressed && gadget_draggable)
2040 gi->scrollbar.drag_position = -1;
2042 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
2044 // clicking next to a scrollbar to move it is not considered "moving"
2045 if (gadget_draggable && !gadget_dragging)
2046 gadget_moving = FALSE;
2048 // when leaving scrollbar area when jump-scrolling, stop gadget processing
2049 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
2050 gadget_stopped = TRUE;
2052 if ((gadget_pressed) ||
2053 (gadget_pressed_repeated && gadget_pressed_delay_reached))
2055 if (gadget_pressed) // gadget pressed the first time
2057 // initialize delay counter
2058 ResetDelayCounter(&pressed_delay);
2060 // start gadget delay with longer delay after first click on gadget
2061 pressed_delay.value = GADGET_FRAME_DELAY_FIRST;
2063 else // gadget hold pressed for some time
2065 // after first repeated gadget click, continue with shorter delay value
2066 pressed_delay.value = GADGET_FRAME_DELAY;
2069 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
2071 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
2072 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
2073 int slider_start = gpos + gi->scrollbar.position;
2074 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
2075 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
2077 if (IS_WHEEL_BUTTON(button) || !inside_slider)
2079 // click scrollbar one scrollbar length up/left or down/right
2081 struct GadgetScrollbar *gs = &gi->scrollbar;
2082 int old_item_position = gs->item_position;
2083 int item_steps = gs->items_visible - 1;
2084 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
2086 if (IS_WHEEL_BUTTON(button))
2088 boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
2090 item_steps = (scroll_single_step ? 1 : wheel_steps);
2091 item_direction = (button == MB_WHEEL_UP ||
2092 button == MB_WHEEL_LEFT ? -1 : +1);
2095 changed_position = FALSE;
2097 gs->item_position += item_steps * item_direction;
2099 if (gs->item_position < 0)
2100 gs->item_position = 0;
2101 else if (gs->item_position > gs->items_max - gs->items_visible)
2102 gs->item_position = gs->items_max - gs->items_visible;
2104 if (old_item_position != gs->item_position)
2106 gi->event.item_position = gs->item_position;
2107 changed_position = TRUE;
2110 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
2113 gi->state = GD_BUTTON_UNPRESSED;
2114 gi->event.type = GD_EVENT_MOVING;
2115 gi->event.off_borders = FALSE;
2117 if (gi->event_mask & GD_EVENT_MOVING)
2118 DoGadgetCallbackAction(gi, changed_position);
2124 // don't handle this scrollbar anymore when mouse position reached
2125 if (gadget_pressed_repeated)
2127 gadget_stopped = TRUE;
2137 PlayGadgetSoundActivating();
2139 if (gi->type == GD_TYPE_CHECK_BUTTON)
2141 gi->checked = !gi->checked;
2143 else if (gi->type == GD_TYPE_RADIO_BUTTON)
2145 struct GadgetInfo *rgi = gadget_list_first_entry;
2150 rgi->type == GD_TYPE_RADIO_BUTTON &&
2151 rgi->radio_nr == gi->radio_nr &&
2154 rgi->checked = FALSE;
2155 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
2163 else if (gi->type & GD_TYPE_SCROLLBAR)
2165 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
2166 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
2167 int slider_start = gpos + gi->scrollbar.position;
2168 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
2169 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
2171 if (!IS_WHEEL_BUTTON(button) && inside_slider)
2173 // start dragging scrollbar
2174 gi->scrollbar.drag_position =
2175 scrollbar_mouse_pos - gi->scrollbar.position;
2178 else if (gi->type & GD_TYPE_SELECTBOX)
2180 // keep selectbox open in case of over-large selectbox
2181 keep_selectbox_open = (mouse_inside_select_line &&
2182 mouse_inside_select_area);
2185 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2187 gi->state = GD_BUTTON_PRESSED;
2188 gi->event.type = GD_EVENT_PRESSED;
2189 gi->event.button = button;
2190 gi->event.off_borders = FALSE;
2192 if (gi->event_mask & GD_EVENT_PRESSED)
2193 gi->callback_action(gi);
2196 if (gadget_pressed_repeated)
2198 gi->event.type = GD_EVENT_PRESSED;
2200 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
2201 gi->callback_action(gi);
2206 if (gi->type & GD_TYPE_BUTTON)
2208 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
2209 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2210 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
2211 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2213 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
2215 int old_index = gi->selectbox.current_index;
2217 // if mouse moving inside activated selectbox, select value
2218 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
2219 gi->selectbox.current_index =
2220 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
2222 if (gi->selectbox.current_index < 0)
2223 gi->selectbox.current_index = 0;
2224 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
2225 gi->selectbox.current_index = gi->selectbox.num_values - 1;
2227 if (gi->selectbox.current_index != old_index)
2228 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2230 else if (gi->type & GD_TYPE_SCROLLBAR)
2232 struct GadgetScrollbar *gs = &gi->scrollbar;
2233 int old_item_position = gs->item_position;
2235 gs->position = scrollbar_mouse_pos - gs->drag_position;
2237 // make sure to always precisely reach end positions when dragging
2238 if (gs->position <= 0)
2241 gs->item_position = 0;
2243 else if (gs->position >= gs->position_max)
2245 gs->position = gs->position_max;
2246 gs->item_position = gs->items_max - gs->items_visible;
2251 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
2254 if (gs->item_position < 0)
2255 gs->item_position = 0;
2256 if (gs->item_position > gs->items_max - 1)
2257 gs->item_position = gs->items_max - 1;
2259 if (old_item_position != gs->item_position)
2261 gi->event.item_position = gs->item_position;
2262 changed_position = TRUE;
2265 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2268 gi->state = (gadget_moving_inside || gadget_draggable ?
2269 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
2270 gi->event.type = GD_EVENT_MOVING;
2271 gi->event.off_borders = gadget_moving_off_borders;
2273 if (gi->event_mask & GD_EVENT_MOVING &&
2274 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
2275 DoGadgetCallbackAction(gi, changed_position);
2278 if (gadget_released_inside)
2280 boolean deactivate_gadget = TRUE;
2281 boolean gadget_changed = TRUE;
2283 if (gi->type == GD_TYPE_CHECK_BUTTON_2)
2285 gi->checked = !gi->checked;
2287 else if (gi->type & GD_TYPE_SELECTBOX)
2289 if (keep_selectbox_open ||
2290 mouse_released_where_pressed ||
2291 !gadget_released_inside_select_area ||
2292 !CURRENT_OPTION_SELECTABLE(gi)) // selectbox stays open
2294 deactivate_gadget = FALSE;
2295 gadget_changed = FALSE;
2297 else if (gi->selectbox.index != gi->selectbox.current_index)
2298 gi->selectbox.index = gi->selectbox.current_index;
2300 gadget_changed = FALSE;
2303 if (deactivate_gadget &&
2304 !(gi->type & GD_TYPE_TEXT_INPUT ||
2305 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
2306 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2308 gi->state = GD_BUTTON_UNPRESSED;
2309 gi->event.type = GD_EVENT_RELEASED;
2311 if ((gi->event_mask & GD_EVENT_RELEASED))
2312 DoGadgetCallbackAction(gi, gadget_changed);
2315 if (gadget_released_off_borders)
2317 if (gi->type & GD_TYPE_SCROLLBAR)
2318 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2320 gi->state = GD_BUTTON_UNPRESSED;
2321 gi->event.type = GD_EVENT_RELEASED;
2323 if (gi->event_mask & GD_EVENT_RELEASED &&
2324 gi->event_mask & GD_EVENT_OFF_BORDERS)
2325 gi->callback_action(gi);
2328 // handle gadgets unmapped/mapped between pressing and releasing
2329 if (release_event && !gadget_released && new_gi)
2330 new_gi->state = GD_BUTTON_UNPRESSED;
2332 return (gadget_pressed || gadget_pressed_repeated ||
2333 gadget_released || gadget_moving);
2336 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
2338 char text[MAX_GADGET_TEXTSIZE + 1];
2339 int cursor_position = gi->textarea.cursor_position;
2341 if (strlen(gi->textarea.value) >= MAX_GADGET_TEXTSIZE) // no space left
2344 strcpy(text, gi->textarea.value);
2345 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
2346 gi->textarea.value[cursor_position] = c;
2348 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2351 boolean HandleGadgetsKeyInput(Key key)
2353 struct GadgetInfo *gi = last_gi;
2355 if (gi == NULL || gi->deactivated || !gi->mapped ||
2356 !(gi->type & GD_TYPE_TEXT_INPUT ||
2357 gi->type & GD_TYPE_TEXT_AREA ||
2358 gi->type & GD_TYPE_SELECTBOX))
2361 if (key == KSYM_Escape)
2363 if (anyTextGadgetActive())
2365 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
2367 // restore previous text (before activating text gadget)
2368 if (gi->type & GD_TYPE_TEXT_INPUT)
2370 strcpy(gi->textinput.value, gi->textinput.last_value);
2372 CheckRangeOfNumericInputGadget(gi);
2375 // store current text for text area gadgets when pressing "Escape" key
2376 if (gi->type & GD_TYPE_TEXT_AREA)
2378 if (!strEqual(gi->textarea.last_value, gi->textarea.value))
2379 strcpy(gi->textarea.last_value, gi->textarea.value);
2381 gadget_changed = FALSE;
2384 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2386 if (gi->type & GD_TYPE_TEXT_AREA)
2388 gi->event.type = GD_EVENT_TEXT_LEAVING;
2390 DoGadgetCallbackAction(gi, gadget_changed);
2398 else if (key == KSYM_Return) // valid for both text input and selectbox
2400 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_RETURN) != 0);
2402 if (gi->type & GD_TYPE_TEXT_INPUT)
2404 CheckRangeOfNumericInputGadget(gi);
2406 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2407 strcpy(gi->textinput.last_value, gi->textinput.value);
2409 gadget_changed = FALSE;
2413 else if (gi->type & GD_TYPE_SELECTBOX)
2415 if (gi->selectbox.index != gi->selectbox.current_index)
2416 gi->selectbox.index = gi->selectbox.current_index;
2418 gadget_changed = FALSE;
2421 if (gi->type & GD_TYPE_TEXT_AREA)
2423 insertCharIntoTextArea(gi, '\n');
2425 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2429 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2431 gi->event.type = GD_EVENT_TEXT_RETURN;
2436 DoGadgetCallbackAction(gi, gadget_changed);
2438 else if (gi->type & GD_TYPE_TEXT_INPUT) // only valid for text input
2440 char text[MAX_GADGET_TEXTSIZE + 1];
2441 int text_length = strlen(gi->textinput.value);
2442 int cursor_pos = gi->textinput.cursor_position;
2443 char letter = getCharFromKey(key);
2444 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2445 letter >= '0' && letter <= '9' :
2448 if (legal_letter && text_length < gi->textinput.size)
2450 strcpy(text, gi->textinput.value);
2451 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2452 gi->textinput.value[cursor_pos] = letter;
2453 gi->textinput.cursor_position++;
2455 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2457 else if (key == KSYM_Left && cursor_pos > 0)
2459 gi->textinput.cursor_position--;
2461 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2463 else if (key == KSYM_Right && cursor_pos < text_length)
2465 gi->textinput.cursor_position++;
2467 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2469 else if (key == KSYM_BackSpace && cursor_pos > 0)
2471 strcpy(text, gi->textinput.value);
2472 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2473 gi->textinput.cursor_position--;
2475 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2477 else if (key == KSYM_Delete && cursor_pos < text_length)
2479 strcpy(text, gi->textinput.value);
2480 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2482 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2484 else if (key == KSYM_Home && cursor_pos > 0)
2486 gi->textinput.cursor_position = 0;
2488 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2490 else if (key == KSYM_End && cursor_pos < text_length)
2492 gi->textinput.cursor_position = text_length;
2494 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2497 else if (gi->type & GD_TYPE_TEXT_AREA) // only valid for text area
2499 char text[MAX_GADGET_TEXTSIZE + 1];
2500 int text_length = strlen(gi->textarea.value);
2501 int area_ysize = gi->textarea.ysize;
2502 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2503 int cursor_x = gi->textarea.cursor_x;
2504 int cursor_y = gi->textarea.cursor_y;
2505 int cursor_pos = gi->textarea.cursor_position;
2506 char letter = getCharFromKey(key);
2507 boolean legal_letter = (letter != 0);
2511 insertCharIntoTextArea(gi, letter);
2513 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2515 else if (key == KSYM_Left && cursor_pos > 0)
2517 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2519 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2521 else if (key == KSYM_Right && cursor_pos < text_length)
2523 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2525 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2527 else if (key == KSYM_Up && cursor_y > 0)
2529 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2530 gi->textarea.cursor_x_preferred = cursor_x_pref;
2532 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2534 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2536 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2537 gi->textarea.cursor_x_preferred = cursor_x_pref;
2539 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2541 else if (key == KSYM_BackSpace && cursor_pos > 0)
2543 strcpy(text, gi->textarea.value);
2544 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2546 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2548 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2550 else if (key == KSYM_Delete && cursor_pos < text_length)
2552 strcpy(text, gi->textarea.value);
2553 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2555 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2557 else if (key == KSYM_Home && cursor_x > 0)
2559 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - cursor_x);
2561 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2563 else if (key == KSYM_End && cursor_pos < text_length)
2565 int last_cursor_pos = cursor_pos;
2567 while (gi->textarea.value[cursor_pos] != '\0' &&
2568 gi->textarea.value[cursor_pos] != '\n')
2571 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + cursor_pos -
2574 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2577 else if (gi->type & GD_TYPE_SELECTBOX) // only valid for selectbox
2579 int index = gi->selectbox.current_index;
2580 int num_values = gi->selectbox.num_values;
2582 if (key == KSYM_Up && index > 0)
2584 gi->selectbox.current_index--;
2586 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2588 else if (key == KSYM_Down && index < num_values - 1)
2590 gi->selectbox.current_index++;
2592 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2599 void DumpGadgetIdentifiers(void)
2601 struct GadgetInfo *gi;
2603 Print("Gadgets on current screen:\n");
2605 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2607 if (gi->mapped && gi->image_id != -1)
2609 char *token = getTokenFromImageID(gi->image_id);
2610 char *prefix = "gfx.";
2612 if (strPrefix(token, prefix))
2613 token = &token[strlen(prefix)];
2615 Print("- '%s'\n", token);
2622 boolean DoGadgetAction(int image_id)
2624 struct GadgetInfo *gi;
2626 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2628 if (gi->mapped && gi->image_id == image_id)
2630 gi->callback_action(gi);