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;
42 static void (*PlayGadgetSoundActivating)(void) = NULL;
43 static void (*PlayGadgetSoundSelecting)(void) = NULL;
46 void InitGadgetsSoundCallback(void (*activating_function)(void),
47 void (*selecting_function)(void))
49 PlayGadgetSoundActivating = activating_function;
50 PlayGadgetSoundSelecting = selecting_function;
53 static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
55 struct GadgetInfo *gi = gadget_list_first_entry;
57 while (gi && gi->id != id)
63 static int getNewGadgetID(void)
65 int id = next_free_gadget_id++;
67 if (next_free_gadget_id <= 0) // counter overrun
69 gadget_id_wrapped = TRUE; // now we must check each ID
70 next_free_gadget_id = 0;
73 if (gadget_id_wrapped)
75 next_free_gadget_id++;
76 while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
77 next_free_gadget_id++;
80 if (next_free_gadget_id <= 0) // cannot get new gadget id
81 Fail("too much gadgets -- this should not happen");
86 static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my,
89 struct GadgetInfo *gi;
91 // first check for scrollbars in case of mouse scroll wheel button events
92 if (IS_WHEEL_BUTTON(button))
94 // real horizontal wheel or vertical wheel with modifier key pressed
95 boolean check_horizontal = (IS_WHEEL_BUTTON_HORIZONTAL(button) ||
96 GetKeyModState() & KMOD_Shift);
98 // check for the first active scrollbar directly under the mouse pointer
99 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
101 if (gi->mapped && gi->active &&
102 (gi->type & GD_TYPE_SCROLLBAR) &&
103 mx >= gi->x && mx < gi->x + gi->width &&
104 my >= gi->y && my < gi->y + gi->height)
108 // check for the first active scrollbar with matching mouse wheel area
109 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
111 if (gi->mapped && gi->active &&
112 ((gi->type & GD_TYPE_SCROLLBAR_HORIZONTAL && check_horizontal) ||
113 (gi->type & GD_TYPE_SCROLLBAR_VERTICAL && !check_horizontal)) &&
114 mx >= gi->wheelarea.x && mx < gi->wheelarea.x + gi->wheelarea.width &&
115 my >= gi->wheelarea.y && my < gi->wheelarea.y + gi->wheelarea.height)
119 // no active scrollbar found -- ignore this scroll wheel button event
123 // open selectboxes may overlap other active gadgets, so check them first
124 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
126 if (gi->mapped && gi->active &&
127 gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
128 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
129 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
133 // check all other gadgets
134 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
136 if (gi->mapped && gi->active &&
137 mx >= gi->x && mx < gi->x + gi->width &&
138 my >= gi->y && my < gi->y + gi->height)
145 static void setTextAreaCursorExt(struct GadgetInfo *gi, boolean set_cursor_pos)
147 char *text = gi->textarea.value;
148 int area_xsize = gi->textarea.xsize;
149 int area_ysize = gi->textarea.ysize;
150 int cursor_position = gi->textarea.cursor_position;
151 int cursor_x = gi->textarea.cursor_x;
152 int cursor_y = gi->textarea.cursor_y;
159 if (set_cursor_pos) // x/y => position
161 if (y == cursor_y && (x == cursor_x || (x < cursor_x && *text == '\n')))
164 else // position => x/y
166 if (pos == cursor_position)
170 if (x + 1 >= area_xsize || *text == '\n')
172 if (y + 1 >= area_ysize)
185 gi->textarea.cursor_x = x;
186 gi->textarea.cursor_y = y;
187 gi->textarea.cursor_x_preferred = x;
188 gi->textarea.cursor_position = pos;
191 static void setTextAreaCursorXY(struct GadgetInfo *gi, int x, int y)
193 gi->textarea.cursor_x = x;
194 gi->textarea.cursor_y = y;
196 setTextAreaCursorExt(gi, TRUE);
199 static void setTextAreaCursorPosition(struct GadgetInfo *gi, int pos)
201 gi->textarea.cursor_position = pos;
203 setTextAreaCursorExt(gi, FALSE);
206 static void default_callback_info(void *ptr)
211 static void default_callback_action(void *ptr)
216 static void DoGadgetCallbackAction(struct GadgetInfo *gi, boolean changed)
218 if (changed || gi->callback_action_always)
219 gi->callback_action(gi);
222 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
224 struct GadgetDesign *gd;
225 int state = (pressed ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
226 boolean redraw_selectbox = FALSE;
228 if (gi == NULL || gi->deactivated)
231 if (gi->overlay_touch_button) // will be drawn later (as texture)
234 gd = (!gi->active ? &gi->alt_design[state] :
235 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
239 case GD_TYPE_NORMAL_BUTTON:
240 case GD_TYPE_CHECK_BUTTON:
241 case GD_TYPE_CHECK_BUTTON_2:
242 case GD_TYPE_RADIO_BUTTON:
244 BlitBitmapOnBackground(gd->bitmap, drawto,
245 gd->x, gd->y, gi->width, gi->height,
248 if (gi->deco.design.bitmap)
250 // make sure that decoration does not overlap gadget border
251 int deco_x = gi->deco.x + (pressed ? gi->deco.xshift : 0);
252 int deco_y = gi->deco.y + (pressed ? gi->deco.yshift : 0);
253 int deco_width = MIN(gi->deco.width, gi->width - deco_x);
254 int deco_height = MIN(gi->deco.height, gi->height - deco_y);
257 BlitBitmapMasked(gi->deco.design.bitmap, drawto,
258 gi->deco.design.x, gi->deco.design.y,
259 deco_width, deco_height,
260 gi->x + deco_x, gi->y + deco_y);
262 BlitBitmap(gi->deco.design.bitmap, drawto,
263 gi->deco.design.x, gi->deco.design.y,
264 deco_width, deco_height,
265 gi->x + deco_x, gi->y + deco_y);
270 case GD_TYPE_TEXT_BUTTON:
273 int font_nr = (gi->active ? gi->font_active : gi->font);
274 int font_width = getFontWidth(font_nr);
275 int border_x = gi->border.xsize;
276 int border_y = gi->border.ysize;
277 int text_size = strlen(gi->textbutton.value);
278 int text_start = (gi->width - text_size * font_width) / 2;
280 // left part of gadget
281 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
282 border_x, gi->height, gi->x, gi->y);
284 // middle part of gadget
285 for (i=0; i < gi->textbutton.size; i++)
286 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
287 font_width, gi->height,
288 gi->x + border_x + i * font_width, gi->y);
290 // right part of gadget
291 BlitBitmapOnBackground(gd->bitmap, drawto,
292 gd->x + gi->border.width - border_x, gd->y,
293 border_x, gi->height,
294 gi->x + gi->width - border_x, gi->y);
298 gi->x + text_start + (pressed ? gi->deco.xshift : 0),
299 gi->y + border_y + (pressed ? gi->deco.yshift : 0),
300 gi->textbutton.value, font_nr, BLIT_MASKED);
304 case GD_TYPE_TEXT_INPUT_ALPHANUMERIC:
305 case GD_TYPE_TEXT_INPUT_NUMERIC:
309 char cursor_string[2];
310 char text[MAX_GADGET_TEXTSIZE + 1];
311 int font_nr = (pressed ? gi->font_active : gi->font);
312 int font_width = getFontWidth(font_nr);
313 int border_x = gi->border.xsize;
314 int border_y = gi->border.ysize;
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->textinput.size + 1; 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);
333 strcpy(text, gi->textinput.value);
338 gi->x + border_x, gi->y + border_y, text,
339 font_nr, BLIT_MASKED);
341 cursor_letter = gi->textinput.value[gi->textinput.cursor_position];
342 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
343 cursor_string[1] = '\0';
345 // draw cursor, if active
349 gi->textinput.cursor_position * font_width,
350 gi->y + border_y, cursor_string,
351 font_nr, BLIT_INVERSE);
355 case GD_TYPE_TEXT_AREA:
359 char cursor_string[2];
360 int font_nr = (pressed ? gi->font_active : gi->font);
361 int font_width = getFontWidth(font_nr);
362 int font_height = getFontHeight(font_nr);
363 int border_x = gi->border.xsize;
364 int border_y = gi->border.ysize;
365 int gd_height = 2 * border_y + font_height;
367 // top left part of gadget border
368 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
369 border_x, border_y, gi->x, gi->y);
371 // top middle part of gadget border
372 for (i=0; i < gi->textarea.xsize; i++)
373 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
374 font_width, border_y,
375 gi->x + border_x + i * font_width, gi->y);
377 // top right part of gadget border
378 BlitBitmapOnBackground(gd->bitmap, drawto,
379 gd->x + gi->border.width - border_x, gd->y,
381 gi->x + gi->width - border_x, gi->y);
383 // left and right part of gadget border for each row
384 for (i=0; i < gi->textarea.ysize; i++)
386 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
387 border_x, font_height,
388 gi->x, gi->y + border_y + i * font_height);
389 BlitBitmapOnBackground(gd->bitmap, drawto,
390 gd->x + gi->border.width - border_x,
392 border_x, font_height,
393 gi->x + gi->width - border_x,
394 gi->y + border_y + i * font_height);
397 // bottom left part of gadget border
398 BlitBitmapOnBackground(gd->bitmap, drawto,
399 gd->x, gd->y + gd_height - border_y,
401 gi->x, gi->y + gi->height - border_y);
403 // bottom middle part of gadget border
404 for (i=0; i < gi->textarea.xsize; i++)
405 BlitBitmapOnBackground(gd->bitmap, drawto,
407 gd->y + gd_height - border_y,
408 font_width, border_y,
409 gi->x + border_x + i * font_width,
410 gi->y + gi->height - border_y);
412 // bottom right part of gadget border
413 BlitBitmapOnBackground(gd->bitmap, drawto,
414 gd->x + gi->border.width - border_x,
415 gd->y + gd_height - border_y,
417 gi->x + gi->width - border_x,
418 gi->y + gi->height - border_y);
420 ClearRectangleOnBackground(drawto,
423 gi->width - 2 * border_x,
424 gi->height - 2 * border_y);
427 DrawTextArea(gi->x + border_x, gi->y + border_y, gi->textarea.value,
428 font_nr, gi->textarea.xsize, -1, gi->textarea.ysize, 0,
429 BLIT_ON_BACKGROUND, FALSE, FALSE, FALSE);
431 cursor_letter = gi->textarea.value[gi->textarea.cursor_position];
432 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
433 cursor_string[1] = '\0';
435 // draw cursor, if active
438 gi->x + border_x + gi->textarea.cursor_x * font_width,
439 gi->y + border_y + gi->textarea.cursor_y * font_height,
441 font_nr, BLIT_INVERSE);
445 case GD_TYPE_SELECTBOX:
448 char text[MAX_GADGET_TEXTSIZE + 1];
449 int font_nr_default = (pressed ? gi->font_active : gi->font);
450 int font_nr = font_nr_default;
451 int font_width = getFontWidth(font_nr);
452 int font_height = getFontHeight(font_nr);
453 int border_x = gi->border.xsize;
454 int border_y = gi->border.ysize;
455 int button = gi->border.xsize_selectbutton;
456 int width_inner = gi->border.width - button - 2 * border_x;
457 int box_width = gi->selectbox.width;
458 int box_height = gi->selectbox.height;
460 // left part of gadget
461 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
462 border_x, gi->height, gi->x, gi->y);
464 // middle part of gadget
465 for (i=0; i < gi->selectbox.size; i++)
466 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
467 font_width, gi->height,
468 gi->x + border_x + i * font_width, gi->y);
470 // button part of gadget
471 BlitBitmapOnBackground(gd->bitmap, drawto,
472 gd->x + border_x + width_inner, gd->y,
474 gi->x + gi->width - border_x - button, gi->y);
476 // right part of gadget
477 BlitBitmapOnBackground(gd->bitmap, drawto,
478 gd->x + gi->border.width - border_x, gd->y,
479 border_x, gi->height,
480 gi->x + gi->width - border_x, gi->y);
483 strncpy(text, gi->selectbox.options[gi->selectbox.index].text,
485 text[gi->selectbox.size] = '\0';
488 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
489 gi->font_unselectable);
492 DrawTextExt(drawto, gi->x + border_x, gi->y + border_y, text,
493 font_nr, BLIT_MASKED);
497 if (!gi->selectbox.open)
499 gi->selectbox.open = TRUE;
500 gi->selectbox.stay_open = FALSE;
501 gi->selectbox.current_index = gi->selectbox.index;
503 // save background under selectbox
504 BlitBitmap(drawto, gfx.field_save_buffer,
505 gi->selectbox.x, gi->selectbox.y,
506 gi->selectbox.width, gi->selectbox.height,
507 gi->selectbox.x, gi->selectbox.y);
510 // draw open selectbox
512 // top left part of gadget border
513 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
515 gi->selectbox.x, gi->selectbox.y);
517 // top middle part of gadget border
518 for (i=0; i < gi->selectbox.size; i++)
519 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
520 font_width, border_y,
521 gi->selectbox.x + border_x + i * font_width,
524 // top button part of gadget border
525 BlitBitmapOnBackground(gd->bitmap, drawto,
526 gd->x + border_x + width_inner, gd->y,
528 gi->selectbox.x + box_width -border_x -button,
531 // top right part of gadget border
532 BlitBitmapOnBackground(gd->bitmap, drawto,
533 gd->x + gi->border.width - border_x, gd->y,
535 gi->selectbox.x + box_width - border_x,
538 // left and right part of gadget border for each row
539 for (i=0; i < gi->selectbox.num_values; i++)
541 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
542 border_x, font_height,
544 gi->selectbox.y + border_y + i*font_height);
545 BlitBitmapOnBackground(gd->bitmap, drawto,
546 gd->x + gi->border.width - border_x,
548 border_x, font_height,
549 gi->selectbox.x + box_width - border_x,
550 gi->selectbox.y + border_y + i*font_height);
553 // bottom left part of gadget border
554 BlitBitmapOnBackground(gd->bitmap, drawto,
555 gd->x, gd->y + gi->height - border_y,
558 gi->selectbox.y + box_height - border_y);
560 // bottom middle part of gadget border
561 for (i=0; i < gi->selectbox.size; i++)
562 BlitBitmapOnBackground(gd->bitmap, drawto,
564 gd->y + gi->height - border_y,
565 font_width, border_y,
566 gi->selectbox.x + border_x + i * font_width,
567 gi->selectbox.y + box_height - border_y);
569 // bottom button part of gadget border
570 BlitBitmapOnBackground(gd->bitmap, drawto,
571 gd->x + border_x + width_inner,
572 gd->y + gi->height - border_y,
574 gi->selectbox.x + box_width -border_x -button,
575 gi->selectbox.y + box_height - border_y);
577 // bottom right part of gadget border
578 BlitBitmapOnBackground(gd->bitmap, drawto,
579 gd->x + gi->border.width - border_x,
580 gd->y + gi->height - border_y,
582 gi->selectbox.x + box_width - border_x,
583 gi->selectbox.y + box_height - border_y);
585 ClearRectangleOnBackground(drawto,
586 gi->selectbox.x + border_x,
587 gi->selectbox.y + border_y,
588 gi->selectbox.width - 2 * border_x,
589 gi->selectbox.height - 2 * border_y);
591 // selectbox text values
592 for (i=0; i < gi->selectbox.num_values; i++)
594 int mask_mode = BLIT_MASKED;
596 strncpy(text, gi->selectbox.options[i].text, gi->selectbox.size);
597 text[gi->selectbox.size] = '\0';
599 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
600 gi->font_unselectable);
602 if (i == gi->selectbox.current_index &&
603 OPTION_TEXT_SELECTABLE(gi, text))
605 FillRectangle(drawto,
606 gi->selectbox.x + border_x,
607 gi->selectbox.y + border_y + i * font_height,
608 gi->selectbox.width - 2 * border_x, font_height,
609 gi->selectbox.inverse_color);
611 // prevent use of cursor graphic by drawing at least two chars
613 text[gi->selectbox.size] = '\0';
615 mask_mode = BLIT_INVERSE;
619 gi->selectbox.x + border_x,
620 gi->selectbox.y + border_y + i * font_height, text,
624 redraw_selectbox = TRUE;
626 else if (gi->selectbox.open)
628 gi->selectbox.open = FALSE;
630 // restore background under selectbox
631 BlitBitmap(gfx.field_save_buffer, drawto,
632 gi->selectbox.x, gi->selectbox.y,
633 gi->selectbox.width, gi->selectbox.height,
634 gi->selectbox.x, gi->selectbox.y);
636 // redraw closed selectbox
637 DrawGadget(gi, FALSE, FALSE);
639 redraw_selectbox = TRUE;
644 case GD_TYPE_SCROLLBAR_VERTICAL:
648 int ypos = gi->y + gi->scrollbar.position;
649 int design_full = gi->width;
650 int design_body = design_full - 2 * gi->border.ysize;
651 int size_full = gi->scrollbar.size;
652 int size_body = size_full - 2 * gi->border.ysize;
653 int num_steps = size_body / design_body;
654 int step_size_remain = size_body - num_steps * design_body;
656 // clear scrollbar area
657 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
658 gi->width, gi->height);
660 // upper part of gadget
661 BlitBitmapOnBackground(gd->bitmap, drawto,
663 gi->width, gi->border.ysize,
666 // middle part of gadget
667 for (i=0; i < num_steps; i++)
668 BlitBitmapOnBackground(gd->bitmap, drawto,
669 gd->x, gd->y + gi->border.ysize,
670 gi->width, design_body,
672 ypos + gi->border.ysize + i * design_body);
674 // remaining middle part of gadget
675 if (step_size_remain > 0)
676 BlitBitmapOnBackground(gd->bitmap, drawto,
677 gd->x, gd->y + gi->border.ysize,
678 gi->width, step_size_remain,
680 ypos + gi->border.ysize
681 + num_steps * design_body);
683 // lower part of gadget
684 BlitBitmapOnBackground(gd->bitmap, drawto,
685 gd->x, gd->y + design_full - gi->border.ysize,
686 gi->width, gi->border.ysize,
687 xpos, ypos + size_full - gi->border.ysize);
691 case GD_TYPE_SCROLLBAR_HORIZONTAL:
694 int xpos = gi->x + gi->scrollbar.position;
696 int design_full = gi->height;
697 int design_body = design_full - 2 * gi->border.xsize;
698 int size_full = gi->scrollbar.size;
699 int size_body = size_full - 2 * gi->border.xsize;
700 int num_steps = size_body / design_body;
701 int step_size_remain = size_body - num_steps * design_body;
703 // clear scrollbar area
704 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
705 gi->width, gi->height);
707 // left part of gadget
708 BlitBitmapOnBackground(gd->bitmap, drawto,
710 gi->border.xsize, gi->height,
713 // middle part of gadget
714 for (i=0; i < num_steps; i++)
715 BlitBitmapOnBackground(gd->bitmap, drawto,
716 gd->x + gi->border.xsize, gd->y,
717 design_body, gi->height,
718 xpos + gi->border.xsize + i * design_body,
721 // remaining middle part of gadget
722 if (step_size_remain > 0)
723 BlitBitmapOnBackground(gd->bitmap, drawto,
724 gd->x + gi->border.xsize, gd->y,
725 step_size_remain, gi->height,
726 xpos + gi->border.xsize
727 + num_steps * design_body,
730 // right part of gadget
731 BlitBitmapOnBackground(gd->bitmap, drawto,
732 gd->x + design_full - gi->border.xsize, gd->y,
733 gi->border.xsize, gi->height,
734 xpos + size_full - gi->border.xsize, ypos);
742 // do not use direct gadget drawing anymore; this worked as a speed-up once,
743 // but would slow things down a lot now the screen is always fully redrawn
748 BlitBitmap(drawto, window,
749 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
751 if (gi->type == GD_TYPE_SELECTBOX && redraw_selectbox)
752 BlitBitmap(drawto, window,
753 gi->selectbox.x, gi->selectbox.y,
754 gi->selectbox.width, gi->selectbox.height,
755 gi->selectbox.x, gi->selectbox.y);
762 redraw_mask |= (IN_GFX_FIELD_FULL(x, y) ? REDRAW_FIELD :
763 IN_GFX_DOOR_1(x, y) ? REDRAW_DOOR_1 :
764 IN_GFX_DOOR_2(x, y) ? REDRAW_DOOR_2 :
765 IN_GFX_DOOR_3(x, y) ? REDRAW_DOOR_3 : REDRAW_ALL);
769 static void SetGadgetPosition_OverlayTouchButton(struct GadgetInfo *gi)
775 gi->x += video.screen_width;
777 gi->y += video.screen_height;
779 gi->x -= video.screen_xoffset;
780 gi->y -= video.screen_yoffset;
783 void SetGadgetsPosition_OverlayTouchButtons(void)
785 struct GadgetInfo *gi;
787 if (gadget_list_first_entry == NULL)
790 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
791 if (gi->overlay_touch_button)
792 SetGadgetPosition_OverlayTouchButton(gi);
795 static void DrawGadget_OverlayTouchButton(struct GadgetInfo *gi)
797 struct GadgetDesign *gd;
798 int state = (gi->state ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
800 if (gi == NULL || gi->deactivated)
803 gd = (!gi->active ? &gi->alt_design[state] :
804 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
806 int x = gi->x + video.screen_xoffset;
807 int y = gi->y + video.screen_yoffset;
808 int alpha = gi->overlay_touch_button_alpha;
809 int alpha_max = SDL_ALPHA_OPAQUE;
810 int alpha_step = ALPHA_FADING_STEPSIZE(alpha_max);
812 // only show mapped overlay touch buttons if touch screen is really used
813 if (gi->mapped && runtime.uses_touch_device)
815 if (alpha < alpha_max)
816 alpha = MIN(alpha + alpha_step, alpha_max);
820 alpha = MAX(0, alpha - alpha_step);
823 gi->overlay_touch_button_alpha = alpha;
830 case GD_TYPE_NORMAL_BUTTON:
831 case GD_TYPE_CHECK_BUTTON:
832 case GD_TYPE_CHECK_BUTTON_2:
833 case GD_TYPE_RADIO_BUTTON:
834 SDL_SetTextureAlphaMod(gd->bitmap->texture_masked, alpha);
835 SDL_SetTextureBlendMode(gd->bitmap->texture_masked, SDL_BLENDMODE_BLEND);
837 BlitToScreenMasked(gd->bitmap, gd->x, gd->y, gi->width, gi->height, x, y);
845 void DrawGadgets_OverlayTouchButtons(void)
847 struct GadgetInfo *gi;
849 if (gadget_list_first_entry == NULL)
852 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
853 if (gi->overlay_touch_button)
854 DrawGadget_OverlayTouchButton(gi);
857 boolean CheckPosition_OverlayTouchButtons(int mx, int my, int button)
859 struct GadgetInfo *gi = getGadgetInfoFromMousePosition(mx, my, button);
861 return (gi != NULL && gi->overlay_touch_button);
864 static int get_minimal_size_for_numeric_input(int minmax_value)
866 int min_size = 1; // value needs at least one digit
869 // add number of digits needed for absolute value
870 for (i = 10; i <= ABS(minmax_value); i *= 10)
873 // if min/max value is negative, add one digit for minus sign
874 if (minmax_value < 0)
880 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
887 while (tag != GDI_END)
892 gi->image_id = va_arg(ap, int);
896 gi->custom_id = va_arg(ap, int);
899 case GDI_CUSTOM_TYPE_ID:
900 gi->custom_type_id = va_arg(ap, int);
905 int max_textsize = MAX_INFO_TEXTSIZE;
906 char *text = va_arg(ap, char *);
909 strncpy(gi->info_text, text, max_textsize);
913 gi->info_text[max_textsize] = '\0';
918 gi->x = gi->orig_x = va_arg(ap, int);
922 gi->y = gi->orig_y = va_arg(ap, int);
926 gi->width = va_arg(ap, int);
930 gi->height = va_arg(ap, int);
934 gi->type = va_arg(ap, unsigned int);
938 gi->state = va_arg(ap, unsigned int);
942 gi->active = (boolean)va_arg(ap, int);
945 case GDI_DIRECT_DRAW:
946 gi->direct_draw = (boolean)va_arg(ap, int);
949 case GDI_OVERLAY_TOUCH_BUTTON:
950 gi->overlay_touch_button = (boolean)va_arg(ap, int);
951 if (gi->overlay_touch_button)
952 SetGadgetPosition_OverlayTouchButton(gi);
955 case GDI_CALLBACK_ACTION_ALWAYS:
956 gi->callback_action_always = (boolean)va_arg(ap, int);
960 gi->checked = (boolean)va_arg(ap, int);
964 gi->radio_nr = va_arg(ap, unsigned int);
967 case GDI_NUMBER_VALUE:
968 gi->textinput.number_value = va_arg(ap, int);
969 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
970 strcpy(gi->textinput.last_value, gi->textinput.value);
971 gi->textinput.cursor_position = strlen(gi->textinput.value);
975 gi->textinput.number_min = va_arg(ap, int);
976 if (gi->textinput.number_value < gi->textinput.number_min)
978 gi->textinput.number_value = gi->textinput.number_min;
979 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
980 strcpy(gi->textinput.last_value, gi->textinput.value);
985 gi->textinput.number_max = va_arg(ap, int);
986 if (gi->textinput.number_value > gi->textinput.number_max)
988 gi->textinput.number_value = gi->textinput.number_max;
989 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
990 strcpy(gi->textinput.last_value, gi->textinput.value);
996 int max_textsize = MAX_GADGET_TEXTSIZE;
998 if (gi->textinput.size)
999 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE);
1001 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
1002 strcpy(gi->textinput.last_value, gi->textinput.value);
1004 gi->textinput.value[max_textsize] = '\0';
1005 gi->textinput.cursor_position = strlen(gi->textinput.value);
1007 // same tag also used for other gadget definitions
1008 strcpy(gi->textbutton.value, gi->textinput.value);
1009 strcpy(gi->textarea.value, gi->textinput.value);
1010 strcpy(gi->textarea.last_value, gi->textinput.value);
1016 int tag_value = va_arg(ap, int);
1017 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE);
1019 gi->textinput.size = max_textsize;
1020 gi->textinput.value[max_textsize] = '\0';
1021 strcpy(gi->textinput.last_value, gi->textinput.value);
1023 // same tag also used for other gadget definitions
1025 gi->textarea.size = max_textsize;
1026 gi->textarea.value[max_textsize] = '\0';
1027 strcpy(gi->textarea.last_value, gi->textinput.value);
1029 gi->textbutton.size = max_textsize;
1030 gi->textbutton.value[max_textsize] = '\0';
1032 gi->selectbox.size = gi->textinput.size;
1037 gi->font = va_arg(ap, int);
1038 if (gi->font_active == 0)
1039 gi->font_active = gi->font;
1040 if (gi->font_unselectable == 0)
1041 gi->font_unselectable = gi->font;
1044 case GDI_TEXT_FONT_ACTIVE:
1045 gi->font_active = va_arg(ap, int);
1048 case GDI_TEXT_FONT_UNSELECTABLE:
1049 gi->font_unselectable = va_arg(ap, int);
1052 case GDI_SELECTBOX_OPTIONS:
1053 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
1056 case GDI_SELECTBOX_INDEX:
1057 gi->selectbox.index = va_arg(ap, int);
1060 case GDI_SELECTBOX_CHAR_UNSELECTABLE:
1061 gi->selectbox.char_unselectable = (char)va_arg(ap, int);
1064 case GDI_DESIGN_UNPRESSED:
1065 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
1066 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
1067 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
1070 case GDI_DESIGN_PRESSED:
1071 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
1072 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
1073 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
1076 case GDI_ALT_DESIGN_UNPRESSED:
1077 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
1078 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
1079 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
1082 case GDI_ALT_DESIGN_PRESSED:
1083 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
1084 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
1085 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
1088 case GDI_BORDER_SIZE:
1089 gi->border.xsize = va_arg(ap, int);
1090 gi->border.ysize = va_arg(ap, int);
1093 case GDI_BORDER_SIZE_SELECTBUTTON:
1094 gi->border.xsize_selectbutton = va_arg(ap, int);
1097 case GDI_DESIGN_WIDTH:
1098 gi->border.width = va_arg(ap, int);
1101 case GDI_DECORATION_DESIGN:
1102 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
1103 gi->deco.design.x = va_arg(ap, int);
1104 gi->deco.design.y = va_arg(ap, int);
1107 case GDI_DECORATION_POSITION:
1108 gi->deco.x = va_arg(ap, int);
1109 gi->deco.y = va_arg(ap, int);
1112 case GDI_DECORATION_SIZE:
1113 gi->deco.width = va_arg(ap, int);
1114 gi->deco.height = va_arg(ap, int);
1117 case GDI_DECORATION_SHIFTING:
1118 gi->deco.xshift = va_arg(ap, int);
1119 gi->deco.yshift = va_arg(ap, int);
1122 case GDI_DECORATION_MASKED:
1123 gi->deco.masked = (boolean)va_arg(ap, int);
1126 case GDI_EVENT_MASK:
1127 gi->event_mask = va_arg(ap, unsigned int);
1131 gi->drawing.area_xsize = va_arg(ap, int);
1132 gi->drawing.area_ysize = va_arg(ap, int);
1134 // determine dependent values for drawing area gadget, if needed
1135 if (gi->drawing.item_xsize != 0 && gi->drawing.item_ysize != 0)
1137 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1138 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1140 else if (gi->width != 0 && gi->height != 0)
1142 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
1143 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
1146 // same tag also used for other gadget definitions
1147 gi->textarea.xsize = gi->drawing.area_xsize;
1148 gi->textarea.ysize = gi->drawing.area_ysize;
1150 if (gi->type & GD_TYPE_TEXT_AREA) // force recalculation
1159 gi->drawing.item_xsize = va_arg(ap, int);
1160 gi->drawing.item_ysize = va_arg(ap, int);
1162 // determine dependent values for drawing area gadget, if needed
1163 if (gi->drawing.area_xsize != 0 && gi->drawing.area_ysize != 0)
1165 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1166 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1168 else if (gi->width != 0 && gi->height != 0)
1170 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
1171 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
1175 case GDI_SCROLLBAR_ITEMS_MAX:
1176 gi->scrollbar.items_max = va_arg(ap, int);
1179 case GDI_SCROLLBAR_ITEMS_VISIBLE:
1180 gi->scrollbar.items_visible = va_arg(ap, int);
1183 case GDI_SCROLLBAR_ITEM_POSITION:
1184 gi->scrollbar.item_position = va_arg(ap, int);
1187 case GDI_WHEEL_AREA_X:
1188 gi->wheelarea.x = va_arg(ap, int);
1191 case GDI_WHEEL_AREA_Y:
1192 gi->wheelarea.y = va_arg(ap, int);
1195 case GDI_WHEEL_AREA_WIDTH:
1196 gi->wheelarea.width = va_arg(ap, int);
1199 case GDI_WHEEL_AREA_HEIGHT:
1200 gi->wheelarea.height = va_arg(ap, int);
1203 case GDI_CALLBACK_INFO:
1204 gi->callback_info = va_arg(ap, gadget_function);
1207 case GDI_CALLBACK_ACTION:
1208 gi->callback_action = va_arg(ap, gadget_function);
1212 Fail("HandleGadgetTags(): unknown tag %d", tag);
1215 tag = va_arg(ap, int); // read next tag
1218 gi->deactivated = FALSE;
1220 // check if gadget has undefined bitmaps
1221 if (gi->type != GD_TYPE_DRAWING_AREA &&
1222 (gi->design[GD_BUTTON_UNPRESSED].bitmap == NULL ||
1223 gi->design[GD_BUTTON_PRESSED].bitmap == NULL))
1224 gi->deactivated = TRUE;
1226 // check if gadget is placed off-screen (and is no overlay touch button)
1227 if ((gi->x < 0 || gi->y < 0) && !gi->overlay_touch_button)
1228 gi->deactivated = TRUE;
1230 // adjust gadget values in relation to other gadget values
1232 if (gi->type & GD_TYPE_TEXT_INPUT)
1234 int font_nr = gi->font_active;
1235 int font_width = getFontWidth(font_nr);
1236 int font_height = getFontHeight(font_nr);
1237 int border_xsize = gi->border.xsize;
1238 int border_ysize = gi->border.ysize;
1240 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1242 int number_min = gi->textinput.number_min;
1243 int number_max = gi->textinput.number_max;
1244 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1245 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1246 int min_size = MAX(min_size_min, min_size_max);
1248 // expand gadget text input size, if maximal value is too large
1249 if (gi->textinput.size < min_size)
1250 gi->textinput.size = min_size;
1253 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1254 gi->height = 2 * border_ysize + font_height;
1257 if (gi->type & GD_TYPE_SELECTBOX)
1259 int font_nr = gi->font_active;
1260 int font_width = getFontWidth(font_nr);
1261 int font_height = getFontHeight(font_nr);
1262 int border_xsize = gi->border.xsize;
1263 int border_ysize = gi->border.ysize;
1264 int button_size = gi->border.xsize_selectbutton;
1265 int bottom_screen_border = gfx.sy + gfx.sysize - font_height;
1269 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1270 gi->height = 2 * border_ysize + font_height;
1272 if (gi->selectbox.options == NULL)
1273 Fail("selectbox gadget incomplete (missing options array)");
1275 gi->selectbox.num_values = 0;
1276 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1277 gi->selectbox.num_values++;
1279 // calculate values for open selectbox
1280 gi->selectbox.width = gi->width;
1281 gi->selectbox.height =
1282 2 * border_ysize + gi->selectbox.num_values * font_height;
1284 gi->selectbox.x = gi->x;
1285 gi->selectbox.y = gi->y + gi->height;
1286 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1287 gi->selectbox.y = gi->y - gi->selectbox.height;
1288 if (gi->selectbox.y < 0)
1289 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1291 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1292 src_x += font_width / 2;
1293 src_y += font_height / 2;
1295 // there may be esoteric cases with missing or too small font bitmap
1296 if (src_bitmap != NULL &&
1297 src_x < src_bitmap->width && src_y < src_bitmap->height)
1298 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1300 // always start with closed selectbox
1301 gi->selectbox.open = FALSE;
1304 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1306 struct GadgetTextInput *text = &gi->textinput;
1307 int value = text->number_value;
1309 text->number_value = (value < text->number_min ? text->number_min :
1310 value > text->number_max ? text->number_max :
1313 sprintf(text->value, "%d", text->number_value);
1316 if (gi->type & GD_TYPE_TEXT_BUTTON)
1318 int font_nr = gi->font_active;
1319 int font_width = getFontWidth(font_nr);
1320 int font_height = getFontHeight(font_nr);
1321 int border_xsize = gi->border.xsize;
1322 int border_ysize = gi->border.ysize;
1324 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1325 gi->height = 2 * border_ysize + font_height;
1328 if (gi->type & GD_TYPE_SCROLLBAR)
1330 struct GadgetScrollbar *gs = &gi->scrollbar;
1331 int scrollbar_size_cmp;
1333 if (gi->width == 0 || gi->height == 0 ||
1334 gs->items_max == 0 || gs->items_visible == 0)
1335 Fail("scrollbar gadget incomplete (missing tags)");
1337 // calculate internal scrollbar values
1338 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1339 gi->width : gi->height);
1340 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1341 gi->height : gi->width);
1343 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1344 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1345 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1347 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1348 gs->position_max = gs->size_max - gs->size;
1349 gs->correction = gs->size_max / gs->items_max / 2;
1351 // finetuning for maximal right/bottom position
1352 if (gs->item_position == gs->items_max - gs->items_visible)
1353 gs->position = gs->position_max;
1356 if (gi->type & GD_TYPE_TEXT_AREA)
1358 int font_nr = gi->font_active;
1359 int font_width = getFontWidth(font_nr);
1360 int font_height = getFontHeight(font_nr);
1361 int border_xsize = gi->border.xsize;
1362 int border_ysize = gi->border.ysize;
1364 if (gi->width == 0 || gi->height == 0)
1366 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1367 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1371 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1372 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1377 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1381 va_start(ap, first_tag);
1382 HandleGadgetTags(gi, first_tag, ap);
1388 void RedrawGadget(struct GadgetInfo *gi)
1390 if (gi == NULL || gi->deactivated)
1394 DrawGadget(gi, gi->state, gi->direct_draw);
1397 struct GadgetInfo *CreateGadget(int first_tag, ...)
1399 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1402 // always start with reliable default values
1403 new_gadget->id = getNewGadgetID();
1404 new_gadget->image_id = -1;
1405 new_gadget->callback_info = default_callback_info;
1406 new_gadget->callback_action = default_callback_action;
1407 new_gadget->active = TRUE;
1408 new_gadget->direct_draw = TRUE;
1409 new_gadget->overlay_touch_button = FALSE;
1410 new_gadget->overlay_touch_button_alpha = 0;
1412 new_gadget->next = NULL;
1414 va_start(ap, first_tag);
1415 HandleGadgetTags(new_gadget, first_tag, ap);
1418 // insert new gadget into global gadget list
1419 if (gadget_list_last_entry)
1421 gadget_list_last_entry->next = new_gadget;
1422 gadget_list_last_entry = gadget_list_last_entry->next;
1425 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1430 void FreeGadget(struct GadgetInfo *gi)
1432 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1437 // prevent "last_info_gi" from pointing to memory that will be freed
1438 if (last_info_gi == gi)
1439 last_info_gi = NULL;
1441 while (gi_previous != NULL && gi_previous->next != gi)
1442 gi_previous = gi_previous->next;
1444 if (gi == gadget_list_first_entry)
1445 gadget_list_first_entry = gi->next;
1447 if (gi == gadget_list_last_entry)
1448 gadget_list_last_entry = gi_previous;
1450 if (gi_previous != NULL)
1451 gi_previous->next = gi->next;
1456 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1458 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1461 gi->textinput.number_value = atoi(gi->textinput.value);
1463 if (gi->textinput.number_value < gi->textinput.number_min)
1464 gi->textinput.number_value = gi->textinput.number_min;
1465 if (gi->textinput.number_value > gi->textinput.number_max)
1466 gi->textinput.number_value = gi->textinput.number_max;
1468 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1470 if (gi->textinput.cursor_position < 0)
1471 gi->textinput.cursor_position = 0;
1472 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1473 gi->textinput.cursor_position = strlen(gi->textinput.value);
1476 // global pointer to gadget actually in use (when mouse button pressed)
1477 static struct GadgetInfo *last_gi = NULL;
1479 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1481 if (gi == NULL || gi->deactivated || gi->mapped)
1484 // do not map overlay touch buttons if touch screen is not used
1485 if (gi->overlay_touch_button && !runtime.uses_touch_device)
1491 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1494 void MapGadget(struct GadgetInfo *gi)
1496 MapGadgetExt(gi, TRUE);
1499 void UnmapGadget(struct GadgetInfo *gi)
1501 if (gi == NULL || gi->deactivated || !gi->mapped)
1510 #define MAX_NUM_GADGETS 1024
1511 #define MULTIMAP_UNMAP (1 << 0)
1512 #define MULTIMAP_REMAP (1 << 1)
1513 #define MULTIMAP_REDRAW (1 << 2)
1514 #define MULTIMAP_PLAYFIELD (1 << 3)
1515 #define MULTIMAP_DOOR_1 (1 << 4)
1516 #define MULTIMAP_DOOR_2 (1 << 5)
1517 #define MULTIMAP_DOOR_3 (1 << 6)
1518 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1523 static void MultiMapGadgets(int mode)
1525 struct GadgetInfo *gi = gadget_list_first_entry;
1526 static boolean map_state[MAX_NUM_GADGETS];
1534 if ((mode & MULTIMAP_PLAYFIELD && IN_GFX_FIELD_FULL(x, y)) ||
1535 (mode & MULTIMAP_DOOR_1 && IN_GFX_DOOR_1(x, y)) ||
1536 (mode & MULTIMAP_DOOR_2 && IN_GFX_DOOR_2(x, y)) ||
1537 (mode & MULTIMAP_DOOR_3 && IN_GFX_DOOR_3(x, y)) ||
1538 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1540 if (mode & MULTIMAP_UNMAP)
1542 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1547 if (map_state[map_count++ % MAX_NUM_GADGETS])
1548 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1556 void UnmapAllGadgets(void)
1558 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1561 void RemapAllGadgets(void)
1563 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1566 boolean anyTextInputGadgetActive(void)
1568 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1571 boolean anyTextAreaGadgetActive(void)
1573 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1576 boolean anySelectboxGadgetActive(void)
1578 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1581 boolean anyScrollbarGadgetActive(void)
1583 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1586 boolean anyTextGadgetActive(void)
1588 return (anyTextInputGadgetActive() ||
1589 anyTextAreaGadgetActive() ||
1590 anySelectboxGadgetActive());
1593 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1595 return (gi != NULL &&
1596 gi->type & GD_TYPE_SELECTBOX &&
1597 mx >= gi->x && mx < gi->x + gi->width &&
1598 my >= gi->y && my < gi->y + gi->height);
1601 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1603 return (gi != NULL &&
1604 gi->type & GD_TYPE_SELECTBOX &&
1605 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1606 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1609 void ClickOnGadget(struct GadgetInfo *gi, int button)
1611 if (gi == NULL || gi->deactivated || !gi->mapped)
1614 // simulate releasing mouse button over last gadget, if still pressed
1616 HandleGadgets(-1, -1, 0);
1621 // set cursor position to the end of the text for text input gadgets
1622 if (gi->type & GD_TYPE_TEXT_INPUT)
1623 x = gi->x + gi->width - 1;
1625 // simulate pressing mouse button over specified gadget
1626 HandleGadgets(x, y, button);
1628 // simulate releasing mouse button over specified gadget
1629 HandleGadgets(x, y, 0);
1632 boolean HandleGadgets(int mx, int my, int button)
1634 static DelayCounter pressed_delay = { GADGET_FRAME_DELAY };
1635 static int last_button = 0;
1636 static int last_mx = 0, last_my = 0;
1637 static int pressed_mx = 0, pressed_my = 0;
1638 static boolean keep_selectbox_open = FALSE;
1639 static boolean gadget_stopped = FALSE;
1640 int scrollbar_mouse_pos = 0;
1641 struct GadgetInfo *new_gi, *gi;
1642 boolean press_event;
1643 boolean release_event;
1644 boolean mouse_moving;
1645 boolean mouse_inside_select_line;
1646 boolean mouse_inside_select_area;
1647 boolean mouse_released_where_pressed;
1648 boolean gadget_pressed;
1649 boolean gadget_pressed_repeated;
1650 boolean gadget_pressed_off_borders;
1651 boolean gadget_pressed_inside_select_line;
1652 boolean gadget_pressed_delay_reached;
1653 boolean gadget_moving;
1654 boolean gadget_moving_inside;
1655 boolean gadget_moving_off_borders;
1656 boolean gadget_draggable;
1657 boolean gadget_dragging;
1658 boolean gadget_released;
1659 boolean gadget_released_inside;
1660 boolean gadget_released_inside_select_area;
1661 boolean gadget_released_off_borders;
1662 boolean changed_position = FALSE;
1664 // check if there are any gadgets defined
1665 if (gadget_list_first_entry == NULL)
1668 // simulated release of mouse button over last gadget
1669 if (mx == -1 && my == -1 && button == 0)
1675 // check which gadget is under the mouse pointer
1676 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1678 // check if button state has changed since last invocation
1679 press_event = (button != 0 && last_button == 0);
1680 release_event = (button == 0 && last_button != 0);
1681 last_button = button;
1683 // check if mouse has been moved since last invocation
1684 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1688 if (press_event && new_gi != last_gi)
1694 mouse_released_where_pressed =
1695 (release_event && mx == pressed_mx && my == pressed_my);
1697 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1698 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1700 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1702 gadget_pressed_inside_select_line =
1703 (press_event && new_gi != NULL &&
1704 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1705 insideSelectboxLine(new_gi, mx, my));
1707 // if mouse button pressed outside text or selectbox gadget, deactivate it
1708 if (anyTextGadgetActive() &&
1709 (gadget_pressed_off_borders ||
1710 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1712 struct GadgetInfo *gi = last_gi;
1713 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
1715 // check if text input gadget has changed its value
1716 if (gi->type & GD_TYPE_TEXT_INPUT)
1718 CheckRangeOfNumericInputGadget(gi);
1720 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1721 strcpy(gi->textinput.last_value, gi->textinput.value);
1723 gadget_changed = FALSE;
1726 // check if text area gadget has changed its value
1727 if (gi->type & GD_TYPE_TEXT_AREA)
1729 if (!strEqual(gi->textarea.last_value, gi->textarea.value))
1730 strcpy(gi->textarea.last_value, gi->textarea.value);
1732 gadget_changed = FALSE;
1735 // selectbox does not change its value when closed by clicking outside
1736 if (gi->type & GD_TYPE_SELECTBOX)
1737 gadget_changed = FALSE;
1739 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1741 gi->event.type = GD_EVENT_TEXT_LEAVING;
1743 if (!(gi->type & GD_TYPE_SELECTBOX))
1744 DoGadgetCallbackAction(gi, gadget_changed);
1748 if (gadget_pressed_inside_select_line)
1755 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1756 gadget_pressed_repeated =
1757 (button != 0 && last_gi != NULL && new_gi == last_gi);
1759 gadget_pressed_delay_reached =
1760 DelayReached(&pressed_delay);
1762 gadget_released = (release_event && last_gi != NULL);
1763 gadget_released_inside = (gadget_released && new_gi == last_gi);
1764 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1766 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1767 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1768 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1770 // when handling selectbox, set additional state values
1771 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1772 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1774 gadget_released_inside_select_area = FALSE;
1776 // setting state for handling over-large selectbox
1777 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1778 keep_selectbox_open = FALSE;
1780 // if new gadget pressed, store this gadget
1784 // 'gi' is actually handled gadget
1787 // if gadget is scrollbar, choose mouse position value
1788 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1789 scrollbar_mouse_pos =
1790 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1792 // if mouse button released, no gadget needs to be handled anymore
1793 if (gadget_released)
1795 if (gi->type & GD_TYPE_SELECTBOX &&
1796 (keep_selectbox_open ||
1797 mouse_released_where_pressed ||
1798 !gadget_released_inside_select_area ||
1799 !CURRENT_OPTION_SELECTABLE(gi))) // selectbox stays open
1801 gi->selectbox.stay_open = TRUE;
1805 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1806 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
1810 // modify event position values even if no gadget is pressed
1811 if (button == 0 && !release_event)
1814 // if new gadget or if no gadget was pressed, release stopped processing
1815 if (gadget_pressed || new_gi == NULL)
1816 gadget_stopped = FALSE;
1818 // if gadget was stopped while being handled, stop gadget processing here
1824 int last_x = gi->event.x;
1825 int last_y = gi->event.y;
1826 int last_mx = gi->event.mx;
1827 int last_my = gi->event.my;
1829 gi->event.x = gi->event.mx = mx - gi->x;
1830 gi->event.y = gi->event.my = my - gi->y;
1832 if (gi->type == GD_TYPE_DRAWING_AREA)
1834 gi->event.x /= gi->drawing.item_xsize;
1835 gi->event.y /= gi->drawing.item_ysize;
1837 if (last_x != gi->event.x || last_y != gi->event.y ||
1838 ((last_mx != gi->event.mx || last_my != gi->event.my) &&
1839 gi->event_mask & GD_EVENT_PIXEL_PRECISE))
1840 changed_position = TRUE;
1842 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1844 int old_cursor_position = gi->textinput.cursor_position;
1846 // if mouse button pressed inside activated text gadget, set cursor
1847 gi->textinput.cursor_position =
1848 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1850 if (gi->textinput.cursor_position < 0)
1851 gi->textinput.cursor_position = 0;
1852 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1853 gi->textinput.cursor_position = strlen(gi->textinput.value);
1855 if (gi->textinput.cursor_position != old_cursor_position)
1856 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1859 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1861 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1863 int old_cursor_position = gi->textarea.cursor_position;
1864 int x = (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1865 int y = (my - gi->y - gi->border.ysize) / getFontHeight(gi->font);
1867 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1868 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1870 setTextAreaCursorXY(gi, x, y);
1872 if (gi->textarea.cursor_position != old_cursor_position)
1873 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1876 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1878 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1879 !keep_selectbox_open)
1881 int old_index = gi->selectbox.current_index;
1883 // if mouse moving inside activated selectbox, select value
1884 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1885 gi->selectbox.current_index =
1886 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1888 if (gi->selectbox.current_index < 0)
1889 gi->selectbox.current_index = 0;
1890 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1891 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1893 if (gi->selectbox.current_index != old_index)
1894 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1898 // handle gadget popup info text
1899 if (last_info_gi != new_gi ||
1900 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
1902 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
1904 new_gi->event.type = GD_EVENT_INFO_ENTERING;
1905 new_gi->callback_info(new_gi);
1907 else if (last_info_gi != NULL && last_info_gi->mapped)
1909 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
1910 last_info_gi->callback_info(last_info_gi);
1913 last_info_gi = new_gi;
1916 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
1918 // reset drag position for newly pressed scrollbar to "not dragging"
1919 if (gadget_pressed && gadget_draggable)
1920 gi->scrollbar.drag_position = -1;
1922 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
1924 // clicking next to a scrollbar to move it is not considered "moving"
1925 if (gadget_draggable && !gadget_dragging)
1926 gadget_moving = FALSE;
1928 // when leaving scrollbar area when jump-scrolling, stop gadget processing
1929 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
1930 gadget_stopped = TRUE;
1932 if ((gadget_pressed) ||
1933 (gadget_pressed_repeated && gadget_pressed_delay_reached))
1935 if (gadget_pressed) // gadget pressed the first time
1937 // initialize delay counter
1938 ResetDelayCounter(&pressed_delay);
1940 // start gadget delay with longer delay after first click on gadget
1941 pressed_delay.value = GADGET_FRAME_DELAY_FIRST;
1943 else // gadget hold pressed for some time
1945 // after first repeated gadget click, continue with shorter delay value
1946 pressed_delay.value = GADGET_FRAME_DELAY;
1949 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
1951 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1952 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1953 int slider_start = gpos + gi->scrollbar.position;
1954 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1955 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1957 if (IS_WHEEL_BUTTON(button) || !inside_slider)
1959 // click scrollbar one scrollbar length up/left or down/right
1961 struct GadgetScrollbar *gs = &gi->scrollbar;
1962 int old_item_position = gs->item_position;
1963 int item_steps = gs->items_visible - 1;
1964 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
1966 if (IS_WHEEL_BUTTON(button))
1968 boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
1970 item_steps = (scroll_single_step ? 1 : wheel_steps);
1971 item_direction = (button == MB_WHEEL_UP ||
1972 button == MB_WHEEL_LEFT ? -1 : +1);
1975 changed_position = FALSE;
1977 gs->item_position += item_steps * item_direction;
1979 if (gs->item_position < 0)
1980 gs->item_position = 0;
1981 else if (gs->item_position > gs->items_max - gs->items_visible)
1982 gs->item_position = gs->items_max - gs->items_visible;
1984 if (old_item_position != gs->item_position)
1986 gi->event.item_position = gs->item_position;
1987 changed_position = TRUE;
1990 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
1993 gi->state = GD_BUTTON_UNPRESSED;
1994 gi->event.type = GD_EVENT_MOVING;
1995 gi->event.off_borders = FALSE;
1997 if (gi->event_mask & GD_EVENT_MOVING)
1998 DoGadgetCallbackAction(gi, changed_position);
2004 // don't handle this scrollbar anymore when mouse position reached
2005 if (gadget_pressed_repeated)
2007 gadget_stopped = TRUE;
2017 PlayGadgetSoundActivating();
2019 if (gi->type == GD_TYPE_CHECK_BUTTON)
2021 gi->checked = !gi->checked;
2023 else if (gi->type == GD_TYPE_RADIO_BUTTON)
2025 struct GadgetInfo *rgi = gadget_list_first_entry;
2030 rgi->type == GD_TYPE_RADIO_BUTTON &&
2031 rgi->radio_nr == gi->radio_nr &&
2034 rgi->checked = FALSE;
2035 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
2043 else if (gi->type & GD_TYPE_SCROLLBAR)
2045 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
2046 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
2047 int slider_start = gpos + gi->scrollbar.position;
2048 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
2049 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
2051 if (!IS_WHEEL_BUTTON(button) && inside_slider)
2053 // start dragging scrollbar
2054 gi->scrollbar.drag_position =
2055 scrollbar_mouse_pos - gi->scrollbar.position;
2058 else if (gi->type & GD_TYPE_SELECTBOX)
2060 // keep selectbox open in case of over-large selectbox
2061 keep_selectbox_open = (mouse_inside_select_line &&
2062 mouse_inside_select_area);
2065 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2067 gi->state = GD_BUTTON_PRESSED;
2068 gi->event.type = GD_EVENT_PRESSED;
2069 gi->event.button = button;
2070 gi->event.off_borders = FALSE;
2072 if (gi->event_mask & GD_EVENT_PRESSED)
2073 gi->callback_action(gi);
2076 if (gadget_pressed_repeated)
2078 gi->event.type = GD_EVENT_PRESSED;
2080 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
2081 gi->callback_action(gi);
2086 if (gi->type & GD_TYPE_BUTTON)
2088 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
2089 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2090 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
2091 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2093 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
2095 int old_index = gi->selectbox.current_index;
2097 // if mouse moving inside activated selectbox, select value
2098 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
2099 gi->selectbox.current_index =
2100 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
2102 if (gi->selectbox.current_index < 0)
2103 gi->selectbox.current_index = 0;
2104 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
2105 gi->selectbox.current_index = gi->selectbox.num_values - 1;
2107 if (gi->selectbox.current_index != old_index)
2108 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2110 else if (gi->type & GD_TYPE_SCROLLBAR)
2112 struct GadgetScrollbar *gs = &gi->scrollbar;
2113 int old_item_position = gs->item_position;
2115 gs->position = scrollbar_mouse_pos - gs->drag_position;
2117 // make sure to always precisely reach end positions when dragging
2118 if (gs->position <= 0)
2121 gs->item_position = 0;
2123 else if (gs->position >= gs->position_max)
2125 gs->position = gs->position_max;
2126 gs->item_position = gs->items_max - gs->items_visible;
2131 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
2134 if (gs->item_position < 0)
2135 gs->item_position = 0;
2136 if (gs->item_position > gs->items_max - 1)
2137 gs->item_position = gs->items_max - 1;
2139 if (old_item_position != gs->item_position)
2141 gi->event.item_position = gs->item_position;
2142 changed_position = TRUE;
2145 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2148 gi->state = (gadget_moving_inside || gadget_draggable ?
2149 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
2150 gi->event.type = GD_EVENT_MOVING;
2151 gi->event.off_borders = gadget_moving_off_borders;
2153 if (gi->event_mask & GD_EVENT_MOVING &&
2154 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
2155 DoGadgetCallbackAction(gi, changed_position);
2158 if (gadget_released_inside)
2160 boolean deactivate_gadget = TRUE;
2161 boolean gadget_changed = TRUE;
2163 if (gi->type == GD_TYPE_CHECK_BUTTON_2)
2165 gi->checked = !gi->checked;
2167 else if (gi->type & GD_TYPE_SELECTBOX)
2169 if (keep_selectbox_open ||
2170 mouse_released_where_pressed ||
2171 !gadget_released_inside_select_area ||
2172 !CURRENT_OPTION_SELECTABLE(gi)) // selectbox stays open
2174 deactivate_gadget = FALSE;
2175 gadget_changed = FALSE;
2177 else if (gi->selectbox.index != gi->selectbox.current_index)
2178 gi->selectbox.index = gi->selectbox.current_index;
2180 gadget_changed = FALSE;
2183 if (deactivate_gadget &&
2184 !(gi->type & GD_TYPE_TEXT_INPUT ||
2185 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
2186 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2188 gi->state = GD_BUTTON_UNPRESSED;
2189 gi->event.type = GD_EVENT_RELEASED;
2191 if ((gi->event_mask & GD_EVENT_RELEASED))
2192 DoGadgetCallbackAction(gi, gadget_changed);
2195 if (gadget_released_off_borders)
2197 if (gi->type & GD_TYPE_SCROLLBAR)
2198 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2200 gi->state = GD_BUTTON_UNPRESSED;
2201 gi->event.type = GD_EVENT_RELEASED;
2203 if (gi->event_mask & GD_EVENT_RELEASED &&
2204 gi->event_mask & GD_EVENT_OFF_BORDERS)
2205 gi->callback_action(gi);
2208 // handle gadgets unmapped/mapped between pressing and releasing
2209 if (release_event && !gadget_released && new_gi)
2210 new_gi->state = GD_BUTTON_UNPRESSED;
2212 return (gadget_pressed || gadget_pressed_repeated ||
2213 gadget_released || gadget_moving);
2216 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
2218 char text[MAX_GADGET_TEXTSIZE + 1];
2219 int cursor_position = gi->textarea.cursor_position;
2221 if (strlen(gi->textarea.value) >= MAX_GADGET_TEXTSIZE) // no space left
2224 strcpy(text, gi->textarea.value);
2225 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
2226 gi->textarea.value[cursor_position] = c;
2228 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2231 boolean HandleGadgetsKeyInput(Key key)
2233 struct GadgetInfo *gi = last_gi;
2235 if (gi == NULL || gi->deactivated || !gi->mapped ||
2236 !(gi->type & GD_TYPE_TEXT_INPUT ||
2237 gi->type & GD_TYPE_TEXT_AREA ||
2238 gi->type & GD_TYPE_SELECTBOX))
2241 if (key == KSYM_Escape)
2243 if (anyTextGadgetActive())
2245 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
2247 // restore previous text (before activating text gadget)
2248 if (gi->type & GD_TYPE_TEXT_INPUT)
2250 strcpy(gi->textinput.value, gi->textinput.last_value);
2252 CheckRangeOfNumericInputGadget(gi);
2255 // store current text for text area gadgets when pressing "Escape" key
2256 if (gi->type & GD_TYPE_TEXT_AREA)
2258 if (!strEqual(gi->textarea.last_value, gi->textarea.value))
2259 strcpy(gi->textarea.last_value, gi->textarea.value);
2261 gadget_changed = FALSE;
2264 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2266 if (gi->type & GD_TYPE_TEXT_AREA)
2268 gi->event.type = GD_EVENT_TEXT_LEAVING;
2270 DoGadgetCallbackAction(gi, gadget_changed);
2278 else if (key == KSYM_Return) // valid for both text input and selectbox
2280 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_RETURN) != 0);
2282 if (gi->type & GD_TYPE_TEXT_INPUT)
2284 CheckRangeOfNumericInputGadget(gi);
2286 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2287 strcpy(gi->textinput.last_value, gi->textinput.value);
2289 gadget_changed = FALSE;
2293 else if (gi->type & GD_TYPE_SELECTBOX)
2295 if (gi->selectbox.index != gi->selectbox.current_index)
2296 gi->selectbox.index = gi->selectbox.current_index;
2298 gadget_changed = FALSE;
2301 if (gi->type & GD_TYPE_TEXT_AREA)
2303 insertCharIntoTextArea(gi, '\n');
2305 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2309 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2311 gi->event.type = GD_EVENT_TEXT_RETURN;
2316 DoGadgetCallbackAction(gi, gadget_changed);
2318 else if (gi->type & GD_TYPE_TEXT_INPUT) // only valid for text input
2320 char text[MAX_GADGET_TEXTSIZE + 1];
2321 int text_length = strlen(gi->textinput.value);
2322 int cursor_pos = gi->textinput.cursor_position;
2323 char letter = getCharFromKey(key);
2324 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2325 letter >= '0' && letter <= '9' :
2328 if (legal_letter && text_length < gi->textinput.size)
2330 strcpy(text, gi->textinput.value);
2331 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2332 gi->textinput.value[cursor_pos] = letter;
2333 gi->textinput.cursor_position++;
2335 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2337 else if (key == KSYM_Left && cursor_pos > 0)
2339 gi->textinput.cursor_position--;
2341 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2343 else if (key == KSYM_Right && cursor_pos < text_length)
2345 gi->textinput.cursor_position++;
2347 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2349 else if (key == KSYM_BackSpace && cursor_pos > 0)
2351 strcpy(text, gi->textinput.value);
2352 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2353 gi->textinput.cursor_position--;
2355 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2357 else if (key == KSYM_Delete && cursor_pos < text_length)
2359 strcpy(text, gi->textinput.value);
2360 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2362 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2364 else if (key == KSYM_Home && cursor_pos > 0)
2366 gi->textinput.cursor_position = 0;
2368 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2370 else if (key == KSYM_End && cursor_pos < text_length)
2372 gi->textinput.cursor_position = text_length;
2374 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2377 else if (gi->type & GD_TYPE_TEXT_AREA) // only valid for text area
2379 char text[MAX_GADGET_TEXTSIZE + 1];
2380 int text_length = strlen(gi->textarea.value);
2381 int area_ysize = gi->textarea.ysize;
2382 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2383 int cursor_x = gi->textarea.cursor_x;
2384 int cursor_y = gi->textarea.cursor_y;
2385 int cursor_pos = gi->textarea.cursor_position;
2386 char letter = getCharFromKey(key);
2387 boolean legal_letter = (letter != 0);
2391 insertCharIntoTextArea(gi, letter);
2393 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2395 else if (key == KSYM_Left && cursor_pos > 0)
2397 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2399 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2401 else if (key == KSYM_Right && cursor_pos < text_length)
2403 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2405 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2407 else if (key == KSYM_Up && cursor_y > 0)
2409 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2410 gi->textarea.cursor_x_preferred = cursor_x_pref;
2412 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2414 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2416 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2417 gi->textarea.cursor_x_preferred = cursor_x_pref;
2419 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2421 else if (key == KSYM_BackSpace && cursor_pos > 0)
2423 strcpy(text, gi->textarea.value);
2424 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2426 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2428 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2430 else if (key == KSYM_Delete && cursor_pos < text_length)
2432 strcpy(text, gi->textarea.value);
2433 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2435 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2437 else if (key == KSYM_Home && cursor_x > 0)
2439 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - cursor_x);
2441 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2443 else if (key == KSYM_End && cursor_pos < text_length)
2445 int last_cursor_pos = cursor_pos;
2447 while (gi->textarea.value[cursor_pos] != '\0' &&
2448 gi->textarea.value[cursor_pos] != '\n')
2451 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + cursor_pos -
2454 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2457 else if (gi->type & GD_TYPE_SELECTBOX) // only valid for selectbox
2459 int index = gi->selectbox.current_index;
2460 int num_values = gi->selectbox.num_values;
2462 if (key == KSYM_Up && index > 0)
2464 gi->selectbox.current_index--;
2466 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2468 else if (key == KSYM_Down && index < num_values - 1)
2470 gi->selectbox.current_index++;
2472 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2479 void DumpGadgetIdentifiers(void)
2481 struct GadgetInfo *gi;
2483 Print("Gadgets on current screen:\n");
2485 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2487 if (gi->mapped && gi->image_id != -1)
2489 char *token = getTokenFromImageID(gi->image_id);
2490 char *prefix = "gfx.";
2492 if (strPrefix(token, prefix))
2493 token = &token[strlen(prefix)];
2495 Print("- '%s'\n", token);
2502 boolean DoGadgetAction(int image_id)
2504 struct GadgetInfo *gi;
2506 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2508 if (gi->mapped && gi->image_id == image_id)
2510 gi->callback_action(gi);