1 // ============================================================================
2 // Artsoft Retro-Game Library
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
7 // http://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 Error(ERR_EXIT, "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_RADIO_BUTTON:
243 BlitBitmapOnBackground(gd->bitmap, drawto,
244 gd->x, gd->y, gi->width, gi->height,
247 if (gi->deco.design.bitmap)
249 // make sure that decoration does not overlap gadget border
250 int deco_x = gi->deco.x + (pressed ? gi->deco.xshift : 0);
251 int deco_y = gi->deco.y + (pressed ? gi->deco.yshift : 0);
252 int deco_width = MIN(gi->deco.width, gi->width - deco_x);
253 int deco_height = MIN(gi->deco.height, gi->height - deco_y);
256 BlitBitmapMasked(gi->deco.design.bitmap, drawto,
257 gi->deco.design.x, gi->deco.design.y,
258 deco_width, deco_height,
259 gi->x + deco_x, gi->y + deco_y);
261 BlitBitmap(gi->deco.design.bitmap, drawto,
262 gi->deco.design.x, gi->deco.design.y,
263 deco_width, deco_height,
264 gi->x + deco_x, gi->y + deco_y);
269 case GD_TYPE_TEXT_BUTTON:
272 int font_nr = (gi->active ? gi->font_active : gi->font);
273 int font_width = getFontWidth(font_nr);
274 int border_x = gi->border.xsize;
275 int border_y = gi->border.ysize;
276 int text_size = strlen(gi->textbutton.value);
277 int text_start = (gi->width - text_size * font_width) / 2;
279 // left part of gadget
280 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
281 border_x, gi->height, gi->x, gi->y);
283 // middle part of gadget
284 for (i=0; i < gi->textbutton.size; i++)
285 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
286 font_width, gi->height,
287 gi->x + border_x + i * font_width, gi->y);
289 // right part of gadget
290 BlitBitmapOnBackground(gd->bitmap, drawto,
291 gd->x + gi->border.width - border_x, gd->y,
292 border_x, gi->height,
293 gi->x + gi->width - border_x, gi->y);
297 gi->x + text_start + (pressed ? gi->deco.xshift : 0),
298 gi->y + border_y + (pressed ? gi->deco.yshift : 0),
299 gi->textbutton.value, font_nr, BLIT_MASKED);
303 case GD_TYPE_TEXT_INPUT_ALPHANUMERIC:
304 case GD_TYPE_TEXT_INPUT_NUMERIC:
308 char cursor_string[2];
309 char text[MAX_GADGET_TEXTSIZE + 1];
310 int font_nr = (pressed ? gi->font_active : gi->font);
311 int font_width = getFontWidth(font_nr);
312 int border_x = gi->border.xsize;
313 int border_y = gi->border.ysize;
315 // left part of gadget
316 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
317 border_x, gi->height, gi->x, gi->y);
319 // middle part of gadget
320 for (i=0; i < gi->textinput.size + 1; i++)
321 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
322 font_width, gi->height,
323 gi->x + border_x + i * font_width, gi->y);
325 // right part of gadget
326 BlitBitmapOnBackground(gd->bitmap, drawto,
327 gd->x + gi->border.width - border_x, gd->y,
328 border_x, gi->height,
329 gi->x + gi->width - border_x, gi->y);
332 strcpy(text, gi->textinput.value);
337 gi->x + border_x, gi->y + border_y, text,
338 font_nr, BLIT_MASKED);
340 cursor_letter = gi->textinput.value[gi->textinput.cursor_position];
341 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
342 cursor_string[1] = '\0';
344 // draw cursor, if active
348 gi->textinput.cursor_position * font_width,
349 gi->y + border_y, cursor_string,
350 font_nr, BLIT_INVERSE);
354 case GD_TYPE_TEXT_AREA:
358 char cursor_string[2];
359 int font_nr = (pressed ? gi->font_active : gi->font);
360 int font_width = getFontWidth(font_nr);
361 int font_height = getFontHeight(font_nr);
362 int border_x = gi->border.xsize;
363 int border_y = gi->border.ysize;
364 int gd_height = 2 * border_y + font_height;
366 // top left part of gadget border
367 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
368 border_x, border_y, gi->x, gi->y);
370 // top middle part of gadget border
371 for (i=0; i < gi->textarea.xsize; i++)
372 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
373 font_width, border_y,
374 gi->x + border_x + i * font_width, gi->y);
376 // top right part of gadget border
377 BlitBitmapOnBackground(gd->bitmap, drawto,
378 gd->x + gi->border.width - border_x, gd->y,
380 gi->x + gi->width - border_x, gi->y);
382 // left and right part of gadget border for each row
383 for (i=0; i < gi->textarea.ysize; i++)
385 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
386 border_x, font_height,
387 gi->x, gi->y + border_y + i * font_height);
388 BlitBitmapOnBackground(gd->bitmap, drawto,
389 gd->x + gi->border.width - border_x,
391 border_x, font_height,
392 gi->x + gi->width - border_x,
393 gi->y + border_y + i * font_height);
396 // bottom left part of gadget border
397 BlitBitmapOnBackground(gd->bitmap, drawto,
398 gd->x, gd->y + gd_height - border_y,
400 gi->x, gi->y + gi->height - border_y);
402 // bottom middle part of gadget border
403 for (i=0; i < gi->textarea.xsize; i++)
404 BlitBitmapOnBackground(gd->bitmap, drawto,
406 gd->y + gd_height - border_y,
407 font_width, border_y,
408 gi->x + border_x + i * font_width,
409 gi->y + gi->height - border_y);
411 // bottom right part of gadget border
412 BlitBitmapOnBackground(gd->bitmap, drawto,
413 gd->x + gi->border.width - border_x,
414 gd->y + gd_height - border_y,
416 gi->x + gi->width - border_x,
417 gi->y + gi->height - border_y);
419 ClearRectangleOnBackground(drawto,
422 gi->width - 2 * border_x,
423 gi->height - 2 * border_y);
426 DrawTextBuffer(gi->x + border_x, gi->y + border_y, gi->textarea.value,
427 font_nr, gi->textarea.xsize, -1, gi->textarea.ysize, 0,
428 BLIT_ON_BACKGROUND, FALSE, FALSE, FALSE);
430 cursor_letter = gi->textarea.value[gi->textarea.cursor_position];
431 cursor_string[0] = (cursor_letter != '\0' ? cursor_letter : ' ');
432 cursor_string[1] = '\0';
434 // draw cursor, if active
437 gi->x + border_x + gi->textarea.cursor_x * font_width,
438 gi->y + border_y + gi->textarea.cursor_y * font_height,
440 font_nr, BLIT_INVERSE);
444 case GD_TYPE_SELECTBOX:
447 char text[MAX_GADGET_TEXTSIZE + 1];
448 int font_nr_default = (pressed ? gi->font_active : gi->font);
449 int font_nr = font_nr_default;
450 int font_width = getFontWidth(font_nr);
451 int font_height = getFontHeight(font_nr);
452 int border_x = gi->border.xsize;
453 int border_y = gi->border.ysize;
454 int button = gi->border.xsize_selectbutton;
455 int width_inner = gi->border.width - button - 2 * border_x;
456 int box_width = gi->selectbox.width;
457 int box_height = gi->selectbox.height;
459 // left part of gadget
460 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
461 border_x, gi->height, gi->x, gi->y);
463 // middle part of gadget
464 for (i=0; i < gi->selectbox.size; i++)
465 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
466 font_width, gi->height,
467 gi->x + border_x + i * font_width, gi->y);
469 // button part of gadget
470 BlitBitmapOnBackground(gd->bitmap, drawto,
471 gd->x + border_x + width_inner, gd->y,
473 gi->x + gi->width - border_x - button, gi->y);
475 // right part of gadget
476 BlitBitmapOnBackground(gd->bitmap, drawto,
477 gd->x + gi->border.width - border_x, gd->y,
478 border_x, gi->height,
479 gi->x + gi->width - border_x, gi->y);
482 strncpy(text, gi->selectbox.options[gi->selectbox.index].text,
484 text[gi->selectbox.size] = '\0';
487 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
488 gi->font_unselectable);
491 DrawTextExt(drawto, gi->x + border_x, gi->y + border_y, text,
492 font_nr, BLIT_MASKED);
496 if (!gi->selectbox.open)
498 gi->selectbox.open = TRUE;
499 gi->selectbox.stay_open = FALSE;
500 gi->selectbox.current_index = gi->selectbox.index;
502 // save background under selectbox
503 BlitBitmap(drawto, gfx.field_save_buffer,
504 gi->selectbox.x, gi->selectbox.y,
505 gi->selectbox.width, gi->selectbox.height,
506 gi->selectbox.x, gi->selectbox.y);
509 // draw open selectbox
511 // top left part of gadget border
512 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y,
514 gi->selectbox.x, gi->selectbox.y);
516 // top middle part of gadget border
517 for (i=0; i < gi->selectbox.size; i++)
518 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x + border_x, gd->y,
519 font_width, border_y,
520 gi->selectbox.x + border_x + i * font_width,
523 // top button part of gadget border
524 BlitBitmapOnBackground(gd->bitmap, drawto,
525 gd->x + border_x + width_inner, gd->y,
527 gi->selectbox.x + box_width -border_x -button,
530 // top right part of gadget border
531 BlitBitmapOnBackground(gd->bitmap, drawto,
532 gd->x + gi->border.width - border_x, gd->y,
534 gi->selectbox.x + box_width - border_x,
537 // left and right part of gadget border for each row
538 for (i=0; i < gi->selectbox.num_values; i++)
540 BlitBitmapOnBackground(gd->bitmap, drawto, gd->x, gd->y + border_y,
541 border_x, font_height,
543 gi->selectbox.y + border_y + i*font_height);
544 BlitBitmapOnBackground(gd->bitmap, drawto,
545 gd->x + gi->border.width - border_x,
547 border_x, font_height,
548 gi->selectbox.x + box_width - border_x,
549 gi->selectbox.y + border_y + i*font_height);
552 // bottom left part of gadget border
553 BlitBitmapOnBackground(gd->bitmap, drawto,
554 gd->x, gd->y + gi->height - border_y,
557 gi->selectbox.y + box_height - border_y);
559 // bottom middle part of gadget border
560 for (i=0; i < gi->selectbox.size; i++)
561 BlitBitmapOnBackground(gd->bitmap, drawto,
563 gd->y + gi->height - border_y,
564 font_width, border_y,
565 gi->selectbox.x + border_x + i * font_width,
566 gi->selectbox.y + box_height - border_y);
568 // bottom button part of gadget border
569 BlitBitmapOnBackground(gd->bitmap, drawto,
570 gd->x + border_x + width_inner,
571 gd->y + gi->height - border_y,
573 gi->selectbox.x + box_width -border_x -button,
574 gi->selectbox.y + box_height - border_y);
576 // bottom right part of gadget border
577 BlitBitmapOnBackground(gd->bitmap, drawto,
578 gd->x + gi->border.width - border_x,
579 gd->y + gi->height - border_y,
581 gi->selectbox.x + box_width - border_x,
582 gi->selectbox.y + box_height - border_y);
584 ClearRectangleOnBackground(drawto,
585 gi->selectbox.x + border_x,
586 gi->selectbox.y + border_y,
587 gi->selectbox.width - 2 * border_x,
588 gi->selectbox.height - 2 * border_y);
590 // selectbox text values
591 for (i=0; i < gi->selectbox.num_values; i++)
593 int mask_mode = BLIT_MASKED;
595 strncpy(text, gi->selectbox.options[i].text, gi->selectbox.size);
596 text[gi->selectbox.size] = '\0';
598 font_nr = (OPTION_TEXT_SELECTABLE(gi, text) ? font_nr_default :
599 gi->font_unselectable);
601 if (i == gi->selectbox.current_index &&
602 OPTION_TEXT_SELECTABLE(gi, text))
604 FillRectangle(drawto,
605 gi->selectbox.x + border_x,
606 gi->selectbox.y + border_y + i * font_height,
607 gi->selectbox.width - 2 * border_x, font_height,
608 gi->selectbox.inverse_color);
610 // prevent use of cursor graphic by drawing at least two chars
612 text[gi->selectbox.size] = '\0';
614 mask_mode = BLIT_INVERSE;
618 gi->selectbox.x + border_x,
619 gi->selectbox.y + border_y + i * font_height, text,
623 redraw_selectbox = TRUE;
625 else if (gi->selectbox.open)
627 gi->selectbox.open = FALSE;
629 // restore background under selectbox
630 BlitBitmap(gfx.field_save_buffer, drawto,
631 gi->selectbox.x, gi->selectbox.y,
632 gi->selectbox.width, gi->selectbox.height,
633 gi->selectbox.x, gi->selectbox.y);
635 // redraw closed selectbox
636 DrawGadget(gi, FALSE, FALSE);
638 redraw_selectbox = TRUE;
643 case GD_TYPE_SCROLLBAR_VERTICAL:
647 int ypos = gi->y + gi->scrollbar.position;
648 int design_full = gi->width;
649 int design_body = design_full - 2 * gi->border.ysize;
650 int size_full = gi->scrollbar.size;
651 int size_body = size_full - 2 * gi->border.ysize;
652 int num_steps = size_body / design_body;
653 int step_size_remain = size_body - num_steps * design_body;
655 // clear scrollbar area
656 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
657 gi->width, gi->height);
659 // upper part of gadget
660 BlitBitmapOnBackground(gd->bitmap, drawto,
662 gi->width, gi->border.ysize,
665 // middle part of gadget
666 for (i=0; i < num_steps; i++)
667 BlitBitmapOnBackground(gd->bitmap, drawto,
668 gd->x, gd->y + gi->border.ysize,
669 gi->width, design_body,
671 ypos + gi->border.ysize + i * design_body);
673 // remaining middle part of gadget
674 if (step_size_remain > 0)
675 BlitBitmapOnBackground(gd->bitmap, drawto,
676 gd->x, gd->y + gi->border.ysize,
677 gi->width, step_size_remain,
679 ypos + gi->border.ysize
680 + num_steps * design_body);
682 // lower part of gadget
683 BlitBitmapOnBackground(gd->bitmap, drawto,
684 gd->x, gd->y + design_full - gi->border.ysize,
685 gi->width, gi->border.ysize,
686 xpos, ypos + size_full - gi->border.ysize);
690 case GD_TYPE_SCROLLBAR_HORIZONTAL:
693 int xpos = gi->x + gi->scrollbar.position;
695 int design_full = gi->height;
696 int design_body = design_full - 2 * gi->border.xsize;
697 int size_full = gi->scrollbar.size;
698 int size_body = size_full - 2 * gi->border.xsize;
699 int num_steps = size_body / design_body;
700 int step_size_remain = size_body - num_steps * design_body;
702 // clear scrollbar area
703 ClearRectangleOnBackground(backbuffer, gi->x, gi->y,
704 gi->width, gi->height);
706 // left part of gadget
707 BlitBitmapOnBackground(gd->bitmap, drawto,
709 gi->border.xsize, gi->height,
712 // middle part of gadget
713 for (i=0; i < num_steps; i++)
714 BlitBitmapOnBackground(gd->bitmap, drawto,
715 gd->x + gi->border.xsize, gd->y,
716 design_body, gi->height,
717 xpos + gi->border.xsize + i * design_body,
720 // remaining middle part of gadget
721 if (step_size_remain > 0)
722 BlitBitmapOnBackground(gd->bitmap, drawto,
723 gd->x + gi->border.xsize, gd->y,
724 step_size_remain, gi->height,
725 xpos + gi->border.xsize
726 + num_steps * design_body,
729 // right part of gadget
730 BlitBitmapOnBackground(gd->bitmap, drawto,
731 gd->x + design_full - gi->border.xsize, gd->y,
732 gi->border.xsize, gi->height,
733 xpos + size_full - gi->border.xsize, ypos);
741 // do not use direct gadget drawing anymore; this worked as a speed-up once,
742 // but would slow things down a lot now the screen is always fully redrawn
747 BlitBitmap(drawto, window,
748 gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
750 if (gi->type == GD_TYPE_SELECTBOX && redraw_selectbox)
751 BlitBitmap(drawto, window,
752 gi->selectbox.x, gi->selectbox.y,
753 gi->selectbox.width, gi->selectbox.height,
754 gi->selectbox.x, gi->selectbox.y);
761 redraw_mask |= (IN_GFX_FIELD_FULL(x, y) ? REDRAW_FIELD :
762 IN_GFX_DOOR_1(x, y) ? REDRAW_DOOR_1 :
763 IN_GFX_DOOR_2(x, y) ? REDRAW_DOOR_2 :
764 IN_GFX_DOOR_3(x, y) ? REDRAW_DOOR_3 : REDRAW_ALL);
768 static void SetGadgetPosition_OverlayTouchButton(struct GadgetInfo *gi)
774 gi->x += video.screen_width;
776 gi->y += video.screen_height;
778 gi->x -= video.screen_xoffset;
779 gi->y -= video.screen_yoffset;
782 void SetGadgetsPosition_OverlayTouchButtons(void)
784 struct GadgetInfo *gi;
786 if (gadget_list_first_entry == NULL)
789 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
790 if (gi->overlay_touch_button)
791 SetGadgetPosition_OverlayTouchButton(gi);
794 static void DrawGadget_OverlayTouchButton(struct GadgetInfo *gi)
796 struct GadgetDesign *gd;
797 int state = (gi->state ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
799 if (gi == NULL || gi->deactivated)
802 gd = (!gi->active ? &gi->alt_design[state] :
803 gi->checked ? &gi->alt_design[state] : &gi->design[state]);
805 int x = gi->x + video.screen_xoffset;
806 int y = gi->y + video.screen_yoffset;
807 int alpha = gi->overlay_touch_button_alpha;
808 int alpha_max = SDL_ALPHA_OPAQUE;
809 int alpha_step = ALPHA_FADING_STEPSIZE(alpha_max);
813 if (alpha < alpha_max)
814 alpha = MIN(alpha + alpha_step, alpha_max);
818 alpha = MAX(0, alpha - alpha_step);
821 gi->overlay_touch_button_alpha = alpha;
828 case GD_TYPE_NORMAL_BUTTON:
829 case GD_TYPE_CHECK_BUTTON:
830 case GD_TYPE_RADIO_BUTTON:
831 SDL_SetTextureAlphaMod(gd->bitmap->texture_masked, alpha);
832 SDL_SetTextureBlendMode(gd->bitmap->texture_masked, SDL_BLENDMODE_BLEND);
834 BlitToScreenMasked(gd->bitmap, gd->x, gd->y, gi->width, gi->height, x, y);
842 void DrawGadgets_OverlayTouchButtons(void)
844 struct GadgetInfo *gi;
846 if (gadget_list_first_entry == NULL)
849 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
850 if (gi->overlay_touch_button)
851 DrawGadget_OverlayTouchButton(gi);
854 boolean CheckPosition_OverlayTouchButtons(int mx, int my, int button)
856 struct GadgetInfo *gi = getGadgetInfoFromMousePosition(mx, my, button);
858 return (gi != NULL && gi->overlay_touch_button);
861 static int get_minimal_size_for_numeric_input(int minmax_value)
863 int min_size = 1; // value needs at least one digit
866 // add number of digits needed for absolute value
867 for (i = 10; i <= ABS(minmax_value); i *= 10)
870 // if min/max value is negative, add one digit for minus sign
871 if (minmax_value < 0)
877 static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
881 if (gi == NULL || gi->deactivated)
884 while (tag != GDI_END)
889 gi->image_id = va_arg(ap, int);
893 gi->custom_id = va_arg(ap, int);
896 case GDI_CUSTOM_TYPE_ID:
897 gi->custom_type_id = va_arg(ap, int);
902 int max_textsize = MAX_INFO_TEXTSIZE;
903 char *text = va_arg(ap, char *);
906 strncpy(gi->info_text, text, max_textsize);
910 gi->info_text[max_textsize] = '\0';
915 gi->x = gi->orig_x = va_arg(ap, int);
919 gi->y = gi->orig_y = va_arg(ap, int);
923 gi->width = va_arg(ap, int);
927 gi->height = va_arg(ap, int);
931 gi->type = va_arg(ap, unsigned int);
935 gi->state = va_arg(ap, unsigned int);
939 gi->active = (boolean)va_arg(ap, int);
942 case GDI_DIRECT_DRAW:
943 gi->direct_draw = (boolean)va_arg(ap, int);
946 case GDI_OVERLAY_TOUCH_BUTTON:
947 gi->overlay_touch_button = (boolean)va_arg(ap, int);
948 if (gi->overlay_touch_button)
949 SetGadgetPosition_OverlayTouchButton(gi);
952 case GDI_CALLBACK_ACTION_ALWAYS:
953 gi->callback_action_always = (boolean)va_arg(ap, int);
957 gi->checked = (boolean)va_arg(ap, int);
961 gi->radio_nr = va_arg(ap, unsigned int);
964 case GDI_NUMBER_VALUE:
965 gi->textinput.number_value = va_arg(ap, int);
966 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
967 strcpy(gi->textinput.last_value, gi->textinput.value);
968 gi->textinput.cursor_position = strlen(gi->textinput.value);
972 gi->textinput.number_min = va_arg(ap, int);
973 if (gi->textinput.number_value < gi->textinput.number_min)
975 gi->textinput.number_value = gi->textinput.number_min;
976 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
977 strcpy(gi->textinput.last_value, gi->textinput.value);
982 gi->textinput.number_max = va_arg(ap, int);
983 if (gi->textinput.number_value > gi->textinput.number_max)
985 gi->textinput.number_value = gi->textinput.number_max;
986 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
987 strcpy(gi->textinput.last_value, gi->textinput.value);
993 int max_textsize = MAX_GADGET_TEXTSIZE;
995 if (gi->textinput.size)
996 max_textsize = MIN(gi->textinput.size, MAX_GADGET_TEXTSIZE);
998 strncpy(gi->textinput.value, va_arg(ap, char *), max_textsize);
999 strcpy(gi->textinput.last_value, gi->textinput.value);
1001 gi->textinput.value[max_textsize] = '\0';
1002 gi->textinput.cursor_position = strlen(gi->textinput.value);
1004 // same tag also used for other gadget definitions
1005 strcpy(gi->textbutton.value, gi->textinput.value);
1006 strcpy(gi->textarea.value, gi->textinput.value);
1007 strcpy(gi->textarea.last_value, gi->textinput.value);
1013 int tag_value = va_arg(ap, int);
1014 int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE);
1016 gi->textinput.size = max_textsize;
1017 gi->textinput.value[max_textsize] = '\0';
1018 strcpy(gi->textinput.last_value, gi->textinput.value);
1020 // same tag also used for other gadget definitions
1022 gi->textarea.size = max_textsize;
1023 gi->textarea.value[max_textsize] = '\0';
1024 strcpy(gi->textarea.last_value, gi->textinput.value);
1026 gi->textbutton.size = max_textsize;
1027 gi->textbutton.value[max_textsize] = '\0';
1029 gi->selectbox.size = gi->textinput.size;
1034 gi->font = va_arg(ap, int);
1035 if (gi->font_active == 0)
1036 gi->font_active = gi->font;
1037 if (gi->font_unselectable == 0)
1038 gi->font_unselectable = gi->font;
1041 case GDI_TEXT_FONT_ACTIVE:
1042 gi->font_active = va_arg(ap, int);
1045 case GDI_TEXT_FONT_UNSELECTABLE:
1046 gi->font_unselectable = va_arg(ap, int);
1049 case GDI_SELECTBOX_OPTIONS:
1050 gi->selectbox.options = va_arg(ap, struct ValueTextInfo *);
1053 case GDI_SELECTBOX_INDEX:
1054 gi->selectbox.index = va_arg(ap, int);
1057 case GDI_SELECTBOX_CHAR_UNSELECTABLE:
1058 gi->selectbox.char_unselectable = (char)va_arg(ap, int);
1061 case GDI_DESIGN_UNPRESSED:
1062 gi->design[GD_BUTTON_UNPRESSED].bitmap = va_arg(ap, Bitmap *);
1063 gi->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
1064 gi->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
1067 case GDI_DESIGN_PRESSED:
1068 gi->design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
1069 gi->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
1070 gi->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
1073 case GDI_ALT_DESIGN_UNPRESSED:
1074 gi->alt_design[GD_BUTTON_UNPRESSED].bitmap= va_arg(ap, Bitmap *);
1075 gi->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
1076 gi->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
1079 case GDI_ALT_DESIGN_PRESSED:
1080 gi->alt_design[GD_BUTTON_PRESSED].bitmap = va_arg(ap, Bitmap *);
1081 gi->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
1082 gi->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
1085 case GDI_BORDER_SIZE:
1086 gi->border.xsize = va_arg(ap, int);
1087 gi->border.ysize = va_arg(ap, int);
1090 case GDI_BORDER_SIZE_SELECTBUTTON:
1091 gi->border.xsize_selectbutton = va_arg(ap, int);
1094 case GDI_DESIGN_WIDTH:
1095 gi->border.width = va_arg(ap, int);
1098 case GDI_DECORATION_DESIGN:
1099 gi->deco.design.bitmap = va_arg(ap, Bitmap *);
1100 gi->deco.design.x = va_arg(ap, int);
1101 gi->deco.design.y = va_arg(ap, int);
1104 case GDI_DECORATION_POSITION:
1105 gi->deco.x = va_arg(ap, int);
1106 gi->deco.y = va_arg(ap, int);
1109 case GDI_DECORATION_SIZE:
1110 gi->deco.width = va_arg(ap, int);
1111 gi->deco.height = va_arg(ap, int);
1114 case GDI_DECORATION_SHIFTING:
1115 gi->deco.xshift = va_arg(ap, int);
1116 gi->deco.yshift = va_arg(ap, int);
1119 case GDI_DECORATION_MASKED:
1120 gi->deco.masked = (boolean)va_arg(ap, int);
1123 case GDI_EVENT_MASK:
1124 gi->event_mask = va_arg(ap, unsigned int);
1128 gi->drawing.area_xsize = va_arg(ap, int);
1129 gi->drawing.area_ysize = va_arg(ap, int);
1131 // determine dependent values for drawing area gadget, if needed
1132 if (gi->drawing.item_xsize != 0 && gi->drawing.item_ysize != 0)
1134 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1135 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1137 else if (gi->width != 0 && gi->height != 0)
1139 gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
1140 gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
1143 // same tag also used for other gadget definitions
1144 gi->textarea.xsize = gi->drawing.area_xsize;
1145 gi->textarea.ysize = gi->drawing.area_ysize;
1147 if (gi->type & GD_TYPE_TEXT_AREA) // force recalculation
1156 gi->drawing.item_xsize = va_arg(ap, int);
1157 gi->drawing.item_ysize = va_arg(ap, int);
1159 // determine dependent values for drawing area gadget, if needed
1160 if (gi->drawing.area_xsize != 0 && gi->drawing.area_ysize != 0)
1162 gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
1163 gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
1165 else if (gi->width != 0 && gi->height != 0)
1167 gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
1168 gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
1172 case GDI_SCROLLBAR_ITEMS_MAX:
1173 gi->scrollbar.items_max = va_arg(ap, int);
1176 case GDI_SCROLLBAR_ITEMS_VISIBLE:
1177 gi->scrollbar.items_visible = va_arg(ap, int);
1180 case GDI_SCROLLBAR_ITEM_POSITION:
1181 gi->scrollbar.item_position = va_arg(ap, int);
1184 case GDI_WHEEL_AREA_X:
1185 gi->wheelarea.x = va_arg(ap, int);
1188 case GDI_WHEEL_AREA_Y:
1189 gi->wheelarea.y = va_arg(ap, int);
1192 case GDI_WHEEL_AREA_WIDTH:
1193 gi->wheelarea.width = va_arg(ap, int);
1196 case GDI_WHEEL_AREA_HEIGHT:
1197 gi->wheelarea.height = va_arg(ap, int);
1200 case GDI_CALLBACK_INFO:
1201 gi->callback_info = va_arg(ap, gadget_function);
1204 case GDI_CALLBACK_ACTION:
1205 gi->callback_action = va_arg(ap, gadget_function);
1209 Error(ERR_EXIT, "HandleGadgetTags(): unknown tag %d", tag);
1212 tag = va_arg(ap, int); // read next tag
1215 gi->deactivated = FALSE;
1217 // check if gadget has undefined bitmaps
1218 if (gi->type != GD_TYPE_DRAWING_AREA &&
1219 (gi->design[GD_BUTTON_UNPRESSED].bitmap == NULL ||
1220 gi->design[GD_BUTTON_PRESSED].bitmap == NULL))
1221 gi->deactivated = TRUE;
1223 // check if gadget is placed off-screen (and is no overlay touch button)
1224 if ((gi->x < 0 || gi->y < 0) && !gi->overlay_touch_button)
1225 gi->deactivated = TRUE;
1227 // adjust gadget values in relation to other gadget values
1229 if (gi->type & GD_TYPE_TEXT_INPUT)
1231 int font_nr = gi->font_active;
1232 int font_width = getFontWidth(font_nr);
1233 int font_height = getFontHeight(font_nr);
1234 int border_xsize = gi->border.xsize;
1235 int border_ysize = gi->border.ysize;
1237 if (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC)
1239 int number_min = gi->textinput.number_min;
1240 int number_max = gi->textinput.number_max;
1241 int min_size_min = get_minimal_size_for_numeric_input(number_min);
1242 int min_size_max = get_minimal_size_for_numeric_input(number_max);
1243 int min_size = MAX(min_size_min, min_size_max);
1245 // expand gadget text input size, if maximal value is too large
1246 if (gi->textinput.size < min_size)
1247 gi->textinput.size = min_size;
1250 gi->width = 2 * border_xsize + (gi->textinput.size + 1) * font_width;
1251 gi->height = 2 * border_ysize + font_height;
1254 if (gi->type & GD_TYPE_SELECTBOX)
1256 int font_nr = gi->font_active;
1257 int font_width = getFontWidth(font_nr);
1258 int font_height = getFontHeight(font_nr);
1259 int border_xsize = gi->border.xsize;
1260 int border_ysize = gi->border.ysize;
1261 int button_size = gi->border.xsize_selectbutton;
1262 int bottom_screen_border = gfx.sy + gfx.sysize - font_height;
1266 gi->width = 2 * border_xsize + gi->textinput.size*font_width +button_size;
1267 gi->height = 2 * border_ysize + font_height;
1269 if (gi->selectbox.options == NULL)
1270 Error(ERR_EXIT, "selectbox gadget incomplete (missing options array)");
1272 gi->selectbox.num_values = 0;
1273 while (gi->selectbox.options[gi->selectbox.num_values].text != NULL)
1274 gi->selectbox.num_values++;
1276 // calculate values for open selectbox
1277 gi->selectbox.width = gi->width;
1278 gi->selectbox.height =
1279 2 * border_ysize + gi->selectbox.num_values * font_height;
1281 gi->selectbox.x = gi->x;
1282 gi->selectbox.y = gi->y + gi->height;
1283 if (gi->selectbox.y + gi->selectbox.height > bottom_screen_border)
1284 gi->selectbox.y = gi->y - gi->selectbox.height;
1285 if (gi->selectbox.y < 0)
1286 gi->selectbox.y = bottom_screen_border - gi->selectbox.height;
1288 getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
1289 src_x += font_width / 2;
1290 src_y += font_height / 2;
1292 // there may be esoteric cases with missing or too small font bitmap
1293 if (src_bitmap != NULL &&
1294 src_x < src_bitmap->width && src_y < src_bitmap->height)
1295 gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
1297 // always start with closed selectbox
1298 gi->selectbox.open = FALSE;
1301 if (gi->type & GD_TYPE_TEXT_INPUT_NUMERIC)
1303 struct GadgetTextInput *text = &gi->textinput;
1304 int value = text->number_value;
1306 text->number_value = (value < text->number_min ? text->number_min :
1307 value > text->number_max ? text->number_max :
1310 sprintf(text->value, "%d", text->number_value);
1313 if (gi->type & GD_TYPE_TEXT_BUTTON)
1315 int font_nr = gi->font_active;
1316 int font_width = getFontWidth(font_nr);
1317 int font_height = getFontHeight(font_nr);
1318 int border_xsize = gi->border.xsize;
1319 int border_ysize = gi->border.ysize;
1321 gi->width = 2 * border_xsize + gi->textbutton.size * font_width;
1322 gi->height = 2 * border_ysize + font_height;
1325 if (gi->type & GD_TYPE_SCROLLBAR)
1327 struct GadgetScrollbar *gs = &gi->scrollbar;
1328 int scrollbar_size_cmp;
1330 if (gi->width == 0 || gi->height == 0 ||
1331 gs->items_max == 0 || gs->items_visible == 0)
1332 Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
1334 // calculate internal scrollbar values
1335 gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1336 gi->width : gi->height);
1337 gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
1338 gi->height : gi->width);
1340 scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
1341 gs->size = MAX(scrollbar_size_cmp, gs->size_min);
1342 gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
1344 gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
1345 gs->position_max = gs->size_max - gs->size;
1346 gs->correction = gs->size_max / gs->items_max / 2;
1348 // finetuning for maximal right/bottom position
1349 if (gs->item_position == gs->items_max - gs->items_visible)
1350 gs->position = gs->position_max;
1353 if (gi->type & GD_TYPE_TEXT_AREA)
1355 int font_nr = gi->font_active;
1356 int font_width = getFontWidth(font_nr);
1357 int font_height = getFontHeight(font_nr);
1358 int border_xsize = gi->border.xsize;
1359 int border_ysize = gi->border.ysize;
1361 if (gi->width == 0 || gi->height == 0)
1363 gi->width = 2 * border_xsize + gi->textarea.xsize * font_width;
1364 gi->height = 2 * border_ysize + gi->textarea.ysize * font_height;
1368 gi->textarea.xsize = (gi->width - 2 * border_xsize) / font_width;
1369 gi->textarea.ysize = (gi->height - 2 * border_ysize) / font_height;
1374 void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
1378 va_start(ap, first_tag);
1379 HandleGadgetTags(gi, first_tag, ap);
1385 void RedrawGadget(struct GadgetInfo *gi)
1387 if (gi == NULL || gi->deactivated)
1391 DrawGadget(gi, gi->state, gi->direct_draw);
1394 struct GadgetInfo *CreateGadget(int first_tag, ...)
1396 struct GadgetInfo *new_gadget = checked_calloc(sizeof(struct GadgetInfo));
1399 // always start with reliable default values
1400 new_gadget->id = getNewGadgetID();
1401 new_gadget->image_id = -1;
1402 new_gadget->callback_info = default_callback_info;
1403 new_gadget->callback_action = default_callback_action;
1404 new_gadget->active = TRUE;
1405 new_gadget->direct_draw = TRUE;
1406 new_gadget->overlay_touch_button = FALSE;
1407 new_gadget->overlay_touch_button_alpha = 0;
1409 new_gadget->next = NULL;
1411 va_start(ap, first_tag);
1412 HandleGadgetTags(new_gadget, first_tag, ap);
1415 // insert new gadget into global gadget list
1416 if (gadget_list_last_entry)
1418 gadget_list_last_entry->next = new_gadget;
1419 gadget_list_last_entry = gadget_list_last_entry->next;
1422 gadget_list_first_entry = gadget_list_last_entry = new_gadget;
1427 void FreeGadget(struct GadgetInfo *gi)
1429 struct GadgetInfo *gi_previous = gadget_list_first_entry;
1434 // prevent "last_info_gi" from pointing to memory that will be freed
1435 if (last_info_gi == gi)
1436 last_info_gi = NULL;
1438 while (gi_previous != NULL && gi_previous->next != gi)
1439 gi_previous = gi_previous->next;
1441 if (gi == gadget_list_first_entry)
1442 gadget_list_first_entry = gi->next;
1444 if (gi == gadget_list_last_entry)
1445 gadget_list_last_entry = gi_previous;
1447 if (gi_previous != NULL)
1448 gi_previous->next = gi->next;
1453 static void CheckRangeOfNumericInputGadget(struct GadgetInfo *gi)
1455 if (gi->type != GD_TYPE_TEXT_INPUT_NUMERIC)
1458 gi->textinput.number_value = atoi(gi->textinput.value);
1460 if (gi->textinput.number_value < gi->textinput.number_min)
1461 gi->textinput.number_value = gi->textinput.number_min;
1462 if (gi->textinput.number_value > gi->textinput.number_max)
1463 gi->textinput.number_value = gi->textinput.number_max;
1465 sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
1467 if (gi->textinput.cursor_position < 0)
1468 gi->textinput.cursor_position = 0;
1469 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1470 gi->textinput.cursor_position = strlen(gi->textinput.value);
1473 // global pointer to gadget actually in use (when mouse button pressed)
1474 static struct GadgetInfo *last_gi = NULL;
1476 static void MapGadgetExt(struct GadgetInfo *gi, boolean redraw)
1478 if (gi == NULL || gi->deactivated || gi->mapped)
1484 DrawGadget(gi, DG_UNPRESSED, DG_BUFFERED);
1487 void MapGadget(struct GadgetInfo *gi)
1489 MapGadgetExt(gi, TRUE);
1492 void UnmapGadget(struct GadgetInfo *gi)
1494 if (gi == NULL || gi->deactivated || !gi->mapped)
1503 #define MAX_NUM_GADGETS 1024
1504 #define MULTIMAP_UNMAP (1 << 0)
1505 #define MULTIMAP_REMAP (1 << 1)
1506 #define MULTIMAP_REDRAW (1 << 2)
1507 #define MULTIMAP_PLAYFIELD (1 << 3)
1508 #define MULTIMAP_DOOR_1 (1 << 4)
1509 #define MULTIMAP_DOOR_2 (1 << 5)
1510 #define MULTIMAP_DOOR_3 (1 << 6)
1511 #define MULTIMAP_ALL (MULTIMAP_PLAYFIELD | \
1516 static void MultiMapGadgets(int mode)
1518 struct GadgetInfo *gi = gadget_list_first_entry;
1519 static boolean map_state[MAX_NUM_GADGETS];
1527 if ((mode & MULTIMAP_PLAYFIELD && IN_GFX_FIELD_FULL(x, y)) ||
1528 (mode & MULTIMAP_DOOR_1 && IN_GFX_DOOR_1(x, y)) ||
1529 (mode & MULTIMAP_DOOR_2 && IN_GFX_DOOR_2(x, y)) ||
1530 (mode & MULTIMAP_DOOR_3 && IN_GFX_DOOR_3(x, y)) ||
1531 (mode & MULTIMAP_ALL) == MULTIMAP_ALL)
1533 if (mode & MULTIMAP_UNMAP)
1535 map_state[map_count++ % MAX_NUM_GADGETS] = gi->mapped;
1540 if (map_state[map_count++ % MAX_NUM_GADGETS])
1541 MapGadgetExt(gi, (mode & MULTIMAP_REDRAW));
1549 void UnmapAllGadgets(void)
1551 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_UNMAP);
1554 void RemapAllGadgets(void)
1556 MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
1559 boolean anyTextInputGadgetActive(void)
1561 return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
1564 boolean anyTextAreaGadgetActive(void)
1566 return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
1569 boolean anySelectboxGadgetActive(void)
1571 return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
1574 boolean anyScrollbarGadgetActive(void)
1576 return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
1579 boolean anyTextGadgetActive(void)
1581 return (anyTextInputGadgetActive() ||
1582 anyTextAreaGadgetActive() ||
1583 anySelectboxGadgetActive());
1586 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
1588 return (gi != NULL &&
1589 gi->type & GD_TYPE_SELECTBOX &&
1590 mx >= gi->x && mx < gi->x + gi->width &&
1591 my >= gi->y && my < gi->y + gi->height);
1594 static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
1596 return (gi != NULL &&
1597 gi->type & GD_TYPE_SELECTBOX &&
1598 mx >= gi->selectbox.x && mx < gi->selectbox.x + gi->selectbox.width &&
1599 my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
1602 void ClickOnGadget(struct GadgetInfo *gi, int button)
1604 if (gi == NULL || gi->deactivated || !gi->mapped)
1607 // simulate releasing mouse button over last gadget, if still pressed
1609 HandleGadgets(-1, -1, 0);
1614 // set cursor position to the end of the text for text input gadgets
1615 if (gi->type & GD_TYPE_TEXT_INPUT)
1616 x = gi->x + gi->width - 1;
1618 // simulate pressing mouse button over specified gadget
1619 HandleGadgets(x, y, button);
1621 // simulate releasing mouse button over specified gadget
1622 HandleGadgets(x, y, 0);
1625 boolean HandleGadgets(int mx, int my, int button)
1627 static unsigned int pressed_delay = 0;
1628 static unsigned int pressed_delay_value = GADGET_FRAME_DELAY;
1629 static int last_button = 0;
1630 static int last_mx = 0, last_my = 0;
1631 static int pressed_mx = 0, pressed_my = 0;
1632 static boolean keep_selectbox_open = FALSE;
1633 static boolean gadget_stopped = FALSE;
1634 int scrollbar_mouse_pos = 0;
1635 struct GadgetInfo *new_gi, *gi;
1636 boolean press_event;
1637 boolean release_event;
1638 boolean mouse_moving;
1639 boolean mouse_inside_select_line;
1640 boolean mouse_inside_select_area;
1641 boolean mouse_released_where_pressed;
1642 boolean gadget_pressed;
1643 boolean gadget_pressed_repeated;
1644 boolean gadget_pressed_off_borders;
1645 boolean gadget_pressed_inside_select_line;
1646 boolean gadget_pressed_delay_reached;
1647 boolean gadget_moving;
1648 boolean gadget_moving_inside;
1649 boolean gadget_moving_off_borders;
1650 boolean gadget_draggable;
1651 boolean gadget_dragging;
1652 boolean gadget_released;
1653 boolean gadget_released_inside;
1654 boolean gadget_released_inside_select_area;
1655 boolean gadget_released_off_borders;
1656 boolean changed_position = FALSE;
1658 // check if there are any gadgets defined
1659 if (gadget_list_first_entry == NULL)
1662 // simulated release of mouse button over last gadget
1663 if (mx == -1 && my == -1 && button == 0)
1669 // check which gadget is under the mouse pointer
1670 new_gi = getGadgetInfoFromMousePosition(mx, my, button);
1672 // check if button state has changed since last invocation
1673 press_event = (button != 0 && last_button == 0);
1674 release_event = (button == 0 && last_button != 0);
1675 last_button = button;
1677 // check if mouse has been moved since last invocation
1678 mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
1682 if (press_event && new_gi != last_gi)
1688 mouse_released_where_pressed =
1689 (release_event && mx == pressed_mx && my == pressed_my);
1691 mouse_inside_select_line = insideSelectboxLine(new_gi, mx, my);
1692 mouse_inside_select_area = insideSelectboxArea(new_gi, mx, my);
1694 gadget_pressed_off_borders = (press_event && new_gi != last_gi);
1696 gadget_pressed_inside_select_line =
1697 (press_event && new_gi != NULL &&
1698 new_gi->type & GD_TYPE_SELECTBOX && new_gi->selectbox.open &&
1699 insideSelectboxLine(new_gi, mx, my));
1701 // if mouse button pressed outside text or selectbox gadget, deactivate it
1702 if (anyTextGadgetActive() &&
1703 (gadget_pressed_off_borders ||
1704 (gadget_pressed_inside_select_line && !mouse_inside_select_area)))
1706 struct GadgetInfo *gi = last_gi;
1707 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_LEAVING) != 0);
1709 // check if text gadget has changed its value
1710 if (gi->type & GD_TYPE_TEXT_INPUT)
1712 CheckRangeOfNumericInputGadget(gi);
1714 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
1715 strcpy(gi->textinput.last_value, gi->textinput.value);
1717 gadget_changed = FALSE;
1720 // selectbox does not change its value when closed by clicking outside
1721 if (gi->type & GD_TYPE_SELECTBOX)
1722 gadget_changed = FALSE;
1724 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
1726 gi->event.type = GD_EVENT_TEXT_LEAVING;
1728 if (!(gi->type & GD_TYPE_SELECTBOX))
1729 DoGadgetCallbackAction(gi, gadget_changed);
1733 if (gadget_pressed_inside_select_line)
1740 (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
1741 gadget_pressed_repeated =
1742 (button != 0 && last_gi != NULL && new_gi == last_gi);
1744 gadget_pressed_delay_reached =
1745 DelayReached(&pressed_delay, pressed_delay_value);
1747 gadget_released = (release_event && last_gi != NULL);
1748 gadget_released_inside = (gadget_released && new_gi == last_gi);
1749 gadget_released_off_borders = (gadget_released && new_gi != last_gi);
1751 gadget_moving = (button != 0 && last_gi != NULL && mouse_moving);
1752 gadget_moving_inside = (gadget_moving && new_gi == last_gi);
1753 gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
1755 // when handling selectbox, set additional state values
1756 if (gadget_released_inside && (last_gi->type & GD_TYPE_SELECTBOX))
1757 gadget_released_inside_select_area = insideSelectboxArea(last_gi, mx, my);
1759 gadget_released_inside_select_area = FALSE;
1761 // setting state for handling over-large selectbox
1762 if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
1763 keep_selectbox_open = FALSE;
1765 // if new gadget pressed, store this gadget
1769 // 'gi' is actually handled gadget
1772 // if gadget is scrollbar, choose mouse position value
1773 if (gi && gi->type & GD_TYPE_SCROLLBAR)
1774 scrollbar_mouse_pos =
1775 (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
1777 // if mouse button released, no gadget needs to be handled anymore
1778 if (gadget_released)
1780 if (gi->type & GD_TYPE_SELECTBOX &&
1781 (keep_selectbox_open ||
1782 mouse_released_where_pressed ||
1783 !gadget_released_inside_select_area ||
1784 !CURRENT_OPTION_SELECTABLE(gi))) // selectbox stays open
1786 gi->selectbox.stay_open = TRUE;
1790 else if (!(gi->type & GD_TYPE_TEXT_INPUT ||
1791 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
1795 // modify event position values even if no gadget is pressed
1796 if (button == 0 && !release_event)
1799 // if new gadget or if no gadget was pressed, release stopped processing
1800 if (gadget_pressed || new_gi == NULL)
1801 gadget_stopped = FALSE;
1803 // if gadget was stopped while being handled, stop gadget processing here
1809 int last_x = gi->event.x;
1810 int last_y = gi->event.y;
1811 int last_mx = gi->event.mx;
1812 int last_my = gi->event.my;
1814 gi->event.x = gi->event.mx = mx - gi->x;
1815 gi->event.y = gi->event.my = my - gi->y;
1817 if (gi->type == GD_TYPE_DRAWING_AREA)
1819 gi->event.x /= gi->drawing.item_xsize;
1820 gi->event.y /= gi->drawing.item_ysize;
1822 if (last_x != gi->event.x || last_y != gi->event.y ||
1823 ((last_mx != gi->event.mx || last_my != gi->event.my) &&
1824 gi->event_mask & GD_EVENT_PIXEL_PRECISE))
1825 changed_position = TRUE;
1827 else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
1829 int old_cursor_position = gi->textinput.cursor_position;
1831 // if mouse button pressed inside activated text gadget, set cursor
1832 gi->textinput.cursor_position =
1833 (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1835 if (gi->textinput.cursor_position < 0)
1836 gi->textinput.cursor_position = 0;
1837 else if (gi->textinput.cursor_position > strlen(gi->textinput.value))
1838 gi->textinput.cursor_position = strlen(gi->textinput.value);
1840 if (gi->textinput.cursor_position != old_cursor_position)
1841 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1844 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1846 else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
1848 int old_cursor_position = gi->textarea.cursor_position;
1849 int x = (mx - gi->x - gi->border.xsize) / getFontWidth(gi->font);
1850 int y = (my - gi->y - gi->border.ysize) / getFontHeight(gi->font);
1852 x = (x < 0 ? 0 : x >= gi->textarea.xsize ? gi->textarea.xsize - 1 : x);
1853 y = (y < 0 ? 0 : y >= gi->textarea.ysize ? gi->textarea.ysize - 1 : y);
1855 setTextAreaCursorXY(gi, x, y);
1857 if (gi->textarea.cursor_position != old_cursor_position)
1858 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1861 StartTextInput(gi->x, gi->y, gi->width, gi->height);
1863 else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
1864 !keep_selectbox_open)
1866 int old_index = gi->selectbox.current_index;
1868 // if mouse moving inside activated selectbox, select value
1869 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
1870 gi->selectbox.current_index =
1871 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
1873 if (gi->selectbox.current_index < 0)
1874 gi->selectbox.current_index = 0;
1875 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
1876 gi->selectbox.current_index = gi->selectbox.num_values - 1;
1878 if (gi->selectbox.current_index != old_index)
1879 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
1883 // handle gadget popup info text
1884 if (last_info_gi != new_gi ||
1885 (new_gi && new_gi->type == GD_TYPE_DRAWING_AREA && changed_position))
1887 if (new_gi != NULL && (button == 0 || new_gi == last_gi))
1889 new_gi->event.type = GD_EVENT_INFO_ENTERING;
1890 new_gi->callback_info(new_gi);
1892 else if (last_info_gi != NULL && last_info_gi->mapped)
1894 last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
1895 last_info_gi->callback_info(last_info_gi);
1898 last_info_gi = new_gi;
1901 gadget_draggable = (gi && gi->type & GD_TYPE_SCROLLBAR);
1903 // reset drag position for newly pressed scrollbar to "not dragging"
1904 if (gadget_pressed && gadget_draggable)
1905 gi->scrollbar.drag_position = -1;
1907 gadget_dragging = (gadget_draggable && gi->scrollbar.drag_position != -1);
1909 // clicking next to a scrollbar to move it is not considered "moving"
1910 if (gadget_draggable && !gadget_dragging)
1911 gadget_moving = FALSE;
1913 // when leaving scrollbar area when jump-scrolling, stop gadget processing
1914 if (gadget_draggable && !gadget_dragging && gadget_moving_off_borders)
1915 gadget_stopped = TRUE;
1917 if ((gadget_pressed) ||
1918 (gadget_pressed_repeated && gadget_pressed_delay_reached))
1920 if (gadget_pressed) // gadget pressed the first time
1922 // initialize delay counter
1923 DelayReached(&pressed_delay, 0);
1925 // start gadget delay with longer delay after first click on gadget
1926 pressed_delay_value = GADGET_FRAME_DELAY_FIRST;
1928 else // gadget hold pressed for some time
1930 // after first repeated gadget click, continue with shorter delay value
1931 pressed_delay_value = GADGET_FRAME_DELAY;
1934 if (gi->type & GD_TYPE_SCROLLBAR && !gadget_dragging)
1936 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
1937 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
1938 int slider_start = gpos + gi->scrollbar.position;
1939 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
1940 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
1942 if (IS_WHEEL_BUTTON(button) || !inside_slider)
1944 // click scrollbar one scrollbar length up/left or down/right
1946 struct GadgetScrollbar *gs = &gi->scrollbar;
1947 int old_item_position = gs->item_position;
1948 int item_steps = gs->items_visible - 1;
1949 int item_direction = (mpos < gpos + gi->scrollbar.position ? -1 : +1);
1951 if (IS_WHEEL_BUTTON(button))
1953 boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
1955 item_steps = (scroll_single_step ? 1 : wheel_steps);
1956 item_direction = (button == MB_WHEEL_UP ||
1957 button == MB_WHEEL_LEFT ? -1 : +1);
1960 changed_position = FALSE;
1962 gs->item_position += item_steps * item_direction;
1964 if (gs->item_position < 0)
1965 gs->item_position = 0;
1966 else if (gs->item_position > gs->items_max - gs->items_visible)
1967 gs->item_position = gs->items_max - gs->items_visible;
1969 if (old_item_position != gs->item_position)
1971 gi->event.item_position = gs->item_position;
1972 changed_position = TRUE;
1975 ModifyGadget(gi, GDI_SCROLLBAR_ITEM_POSITION, gs->item_position,
1978 gi->state = GD_BUTTON_UNPRESSED;
1979 gi->event.type = GD_EVENT_MOVING;
1980 gi->event.off_borders = FALSE;
1982 if (gi->event_mask & GD_EVENT_MOVING)
1983 DoGadgetCallbackAction(gi, changed_position);
1989 // don't handle this scrollbar anymore when mouse position reached
1990 if (gadget_pressed_repeated)
1992 gadget_stopped = TRUE;
2002 PlayGadgetSoundActivating();
2004 if (gi->type == GD_TYPE_CHECK_BUTTON)
2006 gi->checked = !gi->checked;
2008 else if (gi->type == GD_TYPE_RADIO_BUTTON)
2010 struct GadgetInfo *rgi = gadget_list_first_entry;
2015 rgi->type == GD_TYPE_RADIO_BUTTON &&
2016 rgi->radio_nr == gi->radio_nr &&
2019 rgi->checked = FALSE;
2020 DrawGadget(rgi, DG_UNPRESSED, rgi->direct_draw);
2028 else if (gi->type & GD_TYPE_SCROLLBAR)
2030 int mpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx : my);
2031 int gpos = (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? gi->x : gi->y);
2032 int slider_start = gpos + gi->scrollbar.position;
2033 int slider_end = gpos + gi->scrollbar.position + gi->scrollbar.size - 1;
2034 boolean inside_slider = (mpos >= slider_start && mpos <= slider_end);
2036 if (!IS_WHEEL_BUTTON(button) && inside_slider)
2038 // start dragging scrollbar
2039 gi->scrollbar.drag_position =
2040 scrollbar_mouse_pos - gi->scrollbar.position;
2043 else if (gi->type & GD_TYPE_SELECTBOX)
2045 // keep selectbox open in case of over-large selectbox
2046 keep_selectbox_open = (mouse_inside_select_line &&
2047 mouse_inside_select_area);
2050 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2052 gi->state = GD_BUTTON_PRESSED;
2053 gi->event.type = GD_EVENT_PRESSED;
2054 gi->event.button = button;
2055 gi->event.off_borders = FALSE;
2057 if (gi->event_mask & GD_EVENT_PRESSED)
2058 gi->callback_action(gi);
2061 if (gadget_pressed_repeated)
2063 gi->event.type = GD_EVENT_PRESSED;
2065 if (gi->event_mask & GD_EVENT_REPEATED && gadget_pressed_delay_reached)
2066 gi->callback_action(gi);
2071 if (gi->type & GD_TYPE_BUTTON)
2073 if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
2074 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2075 else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
2076 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2078 else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
2080 int old_index = gi->selectbox.current_index;
2082 // if mouse moving inside activated selectbox, select value
2083 if (my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height)
2084 gi->selectbox.current_index =
2085 (my - gi->selectbox.y - gi->border.ysize) / getFontHeight(gi->font);
2087 if (gi->selectbox.current_index < 0)
2088 gi->selectbox.current_index = 0;
2089 else if (gi->selectbox.current_index > gi->selectbox.num_values - 1)
2090 gi->selectbox.current_index = gi->selectbox.num_values - 1;
2092 if (gi->selectbox.current_index != old_index)
2093 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2095 else if (gi->type & GD_TYPE_SCROLLBAR)
2097 struct GadgetScrollbar *gs = &gi->scrollbar;
2098 int old_item_position = gs->item_position;
2100 gs->position = scrollbar_mouse_pos - gs->drag_position;
2102 // make sure to always precisely reach end positions when dragging
2103 if (gs->position <= 0)
2106 gs->item_position = 0;
2108 else if (gs->position >= gs->position_max)
2110 gs->position = gs->position_max;
2111 gs->item_position = gs->items_max - gs->items_visible;
2116 gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
2119 if (gs->item_position < 0)
2120 gs->item_position = 0;
2121 if (gs->item_position > gs->items_max - 1)
2122 gs->item_position = gs->items_max - 1;
2124 if (old_item_position != gs->item_position)
2126 gi->event.item_position = gs->item_position;
2127 changed_position = TRUE;
2130 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2133 gi->state = (gadget_moving_inside || gadget_draggable ?
2134 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
2135 gi->event.type = GD_EVENT_MOVING;
2136 gi->event.off_borders = gadget_moving_off_borders;
2138 if (gi->event_mask & GD_EVENT_MOVING &&
2139 (gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
2140 DoGadgetCallbackAction(gi, changed_position);
2143 if (gadget_released_inside)
2145 boolean deactivate_gadget = TRUE;
2146 boolean gadget_changed = TRUE;
2148 if (gi->type & GD_TYPE_SELECTBOX)
2150 if (keep_selectbox_open ||
2151 mouse_released_where_pressed ||
2152 !gadget_released_inside_select_area ||
2153 !CURRENT_OPTION_SELECTABLE(gi)) // selectbox stays open
2155 deactivate_gadget = FALSE;
2156 gadget_changed = FALSE;
2158 else if (gi->selectbox.index != gi->selectbox.current_index)
2159 gi->selectbox.index = gi->selectbox.current_index;
2161 gadget_changed = FALSE;
2164 if (deactivate_gadget &&
2165 !(gi->type & GD_TYPE_TEXT_INPUT ||
2166 gi->type & GD_TYPE_TEXT_AREA)) // text input stays open
2167 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2169 gi->state = GD_BUTTON_UNPRESSED;
2170 gi->event.type = GD_EVENT_RELEASED;
2172 if ((gi->event_mask & GD_EVENT_RELEASED))
2173 DoGadgetCallbackAction(gi, gadget_changed);
2176 if (gadget_released_off_borders)
2178 if (gi->type & GD_TYPE_SCROLLBAR)
2179 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2181 gi->state = GD_BUTTON_UNPRESSED;
2182 gi->event.type = GD_EVENT_RELEASED;
2184 if (gi->event_mask & GD_EVENT_RELEASED &&
2185 gi->event_mask & GD_EVENT_OFF_BORDERS)
2186 gi->callback_action(gi);
2189 // handle gadgets unmapped/mapped between pressing and releasing
2190 if (release_event && !gadget_released && new_gi)
2191 new_gi->state = GD_BUTTON_UNPRESSED;
2193 return (gadget_pressed || gadget_pressed_repeated ||
2194 gadget_released || gadget_moving);
2197 static void insertCharIntoTextArea(struct GadgetInfo *gi, char c)
2199 char text[MAX_GADGET_TEXTSIZE + 1];
2200 int cursor_position = gi->textarea.cursor_position;
2202 if (strlen(gi->textarea.value) >= MAX_GADGET_TEXTSIZE) // no space left
2205 strcpy(text, gi->textarea.value);
2206 strcpy(&gi->textarea.value[cursor_position + 1], &text[cursor_position]);
2207 gi->textarea.value[cursor_position] = c;
2209 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2212 boolean HandleGadgetsKeyInput(Key key)
2214 struct GadgetInfo *gi = last_gi;
2216 if (gi == NULL || gi->deactivated || !gi->mapped ||
2217 !(gi->type & GD_TYPE_TEXT_INPUT ||
2218 gi->type & GD_TYPE_TEXT_AREA ||
2219 gi->type & GD_TYPE_SELECTBOX))
2222 if (key == KSYM_Escape)
2224 if (anyTextGadgetActive())
2226 // restore previous text (before activating text gadget)
2227 if (gi->type & GD_TYPE_TEXT_INPUT)
2228 strcpy(gi->textinput.value, gi->textinput.last_value);
2230 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2237 else if (key == KSYM_Return) // valid for both text input and selectbox
2239 boolean gadget_changed = ((gi->event_mask & GD_EVENT_TEXT_RETURN) != 0);
2241 if (gi->type & GD_TYPE_TEXT_INPUT)
2243 CheckRangeOfNumericInputGadget(gi);
2245 if (!strEqual(gi->textinput.last_value, gi->textinput.value))
2246 strcpy(gi->textinput.last_value, gi->textinput.value);
2248 gadget_changed = FALSE;
2252 else if (gi->type & GD_TYPE_SELECTBOX)
2254 if (gi->selectbox.index != gi->selectbox.current_index)
2255 gi->selectbox.index = gi->selectbox.current_index;
2257 gadget_changed = FALSE;
2260 if (gi->type & GD_TYPE_TEXT_AREA)
2262 insertCharIntoTextArea(gi, '\n');
2264 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2268 DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
2270 gi->event.type = GD_EVENT_TEXT_RETURN;
2275 DoGadgetCallbackAction(gi, gadget_changed);
2277 else if (gi->type & GD_TYPE_TEXT_INPUT) // only valid for text input
2279 char text[MAX_GADGET_TEXTSIZE + 1];
2280 int text_length = strlen(gi->textinput.value);
2281 int cursor_pos = gi->textinput.cursor_position;
2282 char letter = getCharFromKey(key);
2283 boolean legal_letter = (gi->type == GD_TYPE_TEXT_INPUT_NUMERIC ?
2284 letter >= '0' && letter <= '9' :
2287 if (legal_letter && text_length < gi->textinput.size)
2289 strcpy(text, gi->textinput.value);
2290 strcpy(&gi->textinput.value[cursor_pos + 1], &text[cursor_pos]);
2291 gi->textinput.value[cursor_pos] = letter;
2292 gi->textinput.cursor_position++;
2294 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2296 else if (key == KSYM_Left && cursor_pos > 0)
2298 gi->textinput.cursor_position--;
2300 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2302 else if (key == KSYM_Right && cursor_pos < text_length)
2304 gi->textinput.cursor_position++;
2306 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2308 else if (key == KSYM_BackSpace && cursor_pos > 0)
2310 strcpy(text, gi->textinput.value);
2311 strcpy(&gi->textinput.value[cursor_pos - 1], &text[cursor_pos]);
2312 gi->textinput.cursor_position--;
2314 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2316 else if (key == KSYM_Delete && cursor_pos < text_length)
2318 strcpy(text, gi->textinput.value);
2319 strcpy(&gi->textinput.value[cursor_pos], &text[cursor_pos + 1]);
2321 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2324 else if (gi->type & GD_TYPE_TEXT_AREA) // only valid for text area
2326 char text[MAX_GADGET_TEXTSIZE + 1];
2327 int text_length = strlen(gi->textarea.value);
2328 int area_ysize = gi->textarea.ysize;
2329 int cursor_x_pref = gi->textarea.cursor_x_preferred;
2330 int cursor_y = gi->textarea.cursor_y;
2331 int cursor_pos = gi->textarea.cursor_position;
2332 char letter = getCharFromKey(key);
2333 boolean legal_letter = (letter != 0);
2337 insertCharIntoTextArea(gi, letter);
2339 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2341 else if (key == KSYM_Left && cursor_pos > 0)
2343 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2345 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2347 else if (key == KSYM_Right && cursor_pos < text_length)
2349 setTextAreaCursorPosition(gi, gi->textarea.cursor_position + 1);
2351 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2353 else if (key == KSYM_Up && cursor_y > 0)
2355 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y - 1);
2356 gi->textarea.cursor_x_preferred = cursor_x_pref;
2358 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2360 else if (key == KSYM_Down && cursor_y < area_ysize - 1)
2362 setTextAreaCursorXY(gi, cursor_x_pref, cursor_y + 1);
2363 gi->textarea.cursor_x_preferred = cursor_x_pref;
2365 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2367 else if (key == KSYM_BackSpace && cursor_pos > 0)
2369 strcpy(text, gi->textarea.value);
2370 strcpy(&gi->textarea.value[cursor_pos - 1], &text[cursor_pos]);
2372 setTextAreaCursorPosition(gi, gi->textarea.cursor_position - 1);
2374 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2376 else if (key == KSYM_Delete && cursor_pos < text_length)
2378 strcpy(text, gi->textarea.value);
2379 strcpy(&gi->textarea.value[cursor_pos], &text[cursor_pos + 1]);
2381 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2384 else if (gi->type & GD_TYPE_SELECTBOX) // only valid for selectbox
2386 int index = gi->selectbox.current_index;
2387 int num_values = gi->selectbox.num_values;
2389 if (key == KSYM_Up && index > 0)
2391 gi->selectbox.current_index--;
2393 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2395 else if (key == KSYM_Down && index < num_values - 1)
2397 gi->selectbox.current_index++;
2399 DrawGadget(gi, DG_PRESSED, gi->direct_draw);
2406 void DumpGadgetIdentifiers(void)
2408 struct GadgetInfo *gi;
2410 Print("Gadgets on current screen:\n");
2412 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2414 if (gi->mapped && gi->image_id != -1)
2416 char *token = getTokenFromImageID(gi->image_id);
2417 char *prefix = "gfx.";
2419 if (strPrefix(token, prefix))
2420 token = &token[strlen(prefix)];
2422 Print("- '%s'\n", token);
2429 boolean DoGadgetAction(int image_id)
2431 struct GadgetInfo *gi;
2433 for (gi = gadget_list_first_entry; gi != NULL; gi = gi->next)
2435 if (gi->mapped && gi->image_id == image_id)
2437 gi->callback_action(gi);