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*** empty log message ***
[emacs.git] / lwlib / xlwmenu.c
blobb09f31a9fddb6bd66570d093d066af7f423cda9f
1 /* Implements a lightweight menubar widget.
2 Copyright (C) 1992 Lucid, Inc.
3
4 This file is part of the Lucid Widget Library.
5
6 The Lucid Widget Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 The Lucid Widget Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Created by devin@lucid.com */
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26
27 #include <stdio.h>
28
29 #include <sys/types.h>
30 #include <X11/Xos.h>
31 #include <X11/IntrinsicP.h>
32 #include <X11/ObjectP.h>
33 #include <X11/StringDefs.h>
34 #include <X11/cursorfont.h>
35 #include "xlwmenuP.h"
36
37 #ifdef emacs
38
39 /* Defined in xfns.c. When config.h defines `static' as empty, we get
40 redefinition errors when gray_bitmap is included more than once, so
41 we're referring to the one include in xfns.c here. */
42
43 extern int gray_bitmap_width;
44 extern int gray_bitmap_height;
45 extern unsigned char *gray_bitmap_bits;
46
47 /* Defined in xterm.c. */
48 extern int x_alloc_nearest_color_for_widget __P ((Widget, Colormap, XColor*));
49 extern int x_alloc_lighter_color_for_widget __P ((Widget, Display*, Colormap,
50 unsigned long *,
51 double, int));
52 extern int x_catch_errors __P ((Display*));
53 extern int x_uncatch_errors __P ((Display*, int));
54 extern int x_had_errors_p __P ((Display*));
55 extern int x_clear_errors __P ((Display*));
56 extern unsigned long x_copy_dpy_color __P ((Display *, Colormap,
57 unsigned long));
58
59 /* Defined in xfaces.c. */
60 extern void x_free_dpy_colors __P ((Display *, Screen *, Colormap,
61 unsigned long *pixels, int npixels));
62 #else /* not emacs */
63
64 #include <X11/bitmaps/gray>
65 #define gray_bitmap_width gray_width
66 #define gray_bitmap_height gray_height
67 #define gray_bitmap_bits gray_bits
68
69 #endif /* not emacs */
70
71 static int pointer_grabbed;
72 static XEvent menu_post_event;
73
74 XFontStruct *xlwmenu_default_font;
75
76 static char
77 xlwMenuTranslations [] =
78 "<BtnDown>: start()\n\
79 <Motion>: drag()\n\
80 <BtnUp>: select()\n\
81 <Key>Shift_L: nothing()\n\
82 <Key>Shift_R: nothing()\n\
83 <Key>Meta_L: nothing()\n\
84 <Key>Meta_R: nothing()\n\
85 <Key>Control_L: nothing()\n\
86 <Key>Control_R: nothing()\n\
87 <Key>Hyper_L: nothing()\n\
88 <Key>Hyper_R: nothing()\n\
89 <Key>Super_L: nothing()\n\
90 <Key>Super_R: nothing()\n\
91 <Key>Alt_L: nothing()\n\
92 <Key>Alt_R: nothing()\n\
93 <Key>Caps_Lock: nothing()\n\
94 <Key>Shift_Lock: nothing()\n\
95 <KeyUp>Shift_L: nothing()\n\
96 <KeyUp>Shift_R: nothing()\n\
97 <KeyUp>Meta_L: nothing()\n\
98 <KeyUp>Meta_R: nothing()\n\
99 <KeyUp>Control_L: nothing()\n\
100 <KeyUp>Control_R: nothing()\n\
101 <KeyUp>Hyper_L: nothing()\n\
102 <KeyUp>Hyper_R: nothing()\n\
103 <KeyUp>Super_L: nothing()\n\
104 <KeyUp>Super_R: nothing()\n\
105 <KeyUp>Alt_L: nothing()\n\
106 <KeyUp>Alt_R: nothing()\n\
107 <KeyUp>Caps_Lock: nothing()\n\
108 <KeyUp>Shift_Lock:nothing()\n\
109 <Key>: key()\n\
110 <KeyUp>: key()\n\
111 ";
112
113 #define offset(field) XtOffset(XlwMenuWidget, field)
114 static XtResource
115 xlwMenuResources[] =
116 {
117 {XtNfont, XtCFont, XtRFontStruct, sizeof(XFontStruct *),
118 offset(menu.font),XtRString, "XtDefaultFont"},
119 {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
120 offset(menu.foreground), XtRString, "XtDefaultForeground"},
121 {XtNbuttonForeground, XtCButtonForeground, XtRPixel, sizeof(Pixel),
122 offset(menu.button_foreground), XtRString, "XtDefaultForeground"},
123 {XtNmargin, XtCMargin, XtRDimension, sizeof(Dimension),
124 offset(menu.margin), XtRImmediate, (XtPointer) 4},
125 {XtNhorizontalSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
126 offset(menu.horizontal_spacing), XtRImmediate, (XtPointer)3},
127 {XtNverticalSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
128 offset(menu.vertical_spacing), XtRImmediate, (XtPointer)1},
129 {XtNarrowSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
130 offset(menu.arrow_spacing), XtRImmediate, (XtPointer)10},
131
132 {XmNshadowThickness, XmCShadowThickness, XtRDimension,
133 sizeof (Dimension), offset (menu.shadow_thickness),
134 XtRImmediate, (XtPointer) 2},
135 {XmNtopShadowColor, XmCTopShadowColor, XtRPixel, sizeof (Pixel),
136 offset (menu.top_shadow_color), XtRImmediate, (XtPointer)-1},
137 {XmNbottomShadowColor, XmCBottomShadowColor, XtRPixel, sizeof (Pixel),
138 offset (menu.bottom_shadow_color), XtRImmediate, (XtPointer)-1},
139 {XmNtopShadowPixmap, XmCTopShadowPixmap, XtRPixmap, sizeof (Pixmap),
140 offset (menu.top_shadow_pixmap), XtRImmediate, (XtPointer)None},
141 {XmNbottomShadowPixmap, XmCBottomShadowPixmap, XtRPixmap, sizeof (Pixmap),
142 offset (menu.bottom_shadow_pixmap), XtRImmediate, (XtPointer)None},
143
144 {XtNopen, XtCCallback, XtRCallback, sizeof(XtPointer),
145 offset(menu.open), XtRCallback, (XtPointer)NULL},
146 {XtNselect, XtCCallback, XtRCallback, sizeof(XtPointer),
147 offset(menu.select), XtRCallback, (XtPointer)NULL},
148 {XtNhighlightCallback, XtCCallback, XtRCallback, sizeof(XtPointer),
149 offset(menu.highlight), XtRCallback, (XtPointer)NULL},
150 {XtNmenu, XtCMenu, XtRPointer, sizeof(XtPointer),
151 offset(menu.contents), XtRImmediate, (XtPointer)NULL},
152 {XtNcursor, XtCCursor, XtRCursor, sizeof(Cursor),
153 offset(menu.cursor_shape), XtRString, (XtPointer)"right_ptr"},
154 {XtNhorizontal, XtCHorizontal, XtRInt, sizeof(int),
155 offset(menu.horizontal), XtRImmediate, (XtPointer)True},
156 };
157 #undef offset
158
159 static Boolean XlwMenuSetValues();
160 static void XlwMenuRealize();
161 static void XlwMenuRedisplay();
162 static void XlwMenuResize();
163 static void XlwMenuInitialize();
164 static void XlwMenuRedisplay();
165 static void XlwMenuDestroy();
166 static void XlwMenuClassInitialize();
167 static void Start();
168 static void Drag();
169 static void Select();
170 static void Key();
171 static void Nothing();
172 static int separator_height ();
173
174 static XtActionsRec
175 xlwMenuActionsList [] =
176 {
177 {"start", Start},
178 {"drag", Drag},
179 {"select", Select},
180 {"key", Key},
181 {"nothing", Nothing},
182 };
183
184 #define SuperClass ((CoreWidgetClass)&coreClassRec)
185
186 XlwMenuClassRec xlwMenuClassRec =
187 {
188 { /* CoreClass fields initialization */
189 (WidgetClass) SuperClass, /* superclass */
190 "XlwMenu", /* class_name */
191 sizeof(XlwMenuRec), /* size */
192 XlwMenuClassInitialize, /* class_initialize */
193 NULL, /* class_part_initialize */
194 FALSE, /* class_inited */
195 XlwMenuInitialize, /* initialize */
196 NULL, /* initialize_hook */
197 XlwMenuRealize, /* realize */
198 xlwMenuActionsList, /* actions */
199 XtNumber(xlwMenuActionsList), /* num_actions */
200 xlwMenuResources, /* resources */
201 XtNumber(xlwMenuResources), /* resource_count */
202 NULLQUARK, /* xrm_class */
203 TRUE, /* compress_motion */
204 TRUE, /* compress_exposure */
205 TRUE, /* compress_enterleave */
206 FALSE, /* visible_interest */
207 XlwMenuDestroy, /* destroy */
208 XlwMenuResize, /* resize */
209 XlwMenuRedisplay, /* expose */
210 XlwMenuSetValues, /* set_values */
211 NULL, /* set_values_hook */
212 XtInheritSetValuesAlmost, /* set_values_almost */
213 NULL, /* get_values_hook */
214 NULL, /* accept_focus */
215 XtVersion, /* version */
216 NULL, /* callback_private */
217 xlwMenuTranslations, /* tm_table */
218 XtInheritQueryGeometry, /* query_geometry */
219 XtInheritDisplayAccelerator, /* display_accelerator */
220 NULL /* extension */
221 }, /* XlwMenuClass fields initialization */
222 {
223 0 /* dummy */
224 },
225 };
226
227 WidgetClass xlwMenuWidgetClass = (WidgetClass) &xlwMenuClassRec;
228
229 int submenu_destroyed;
230
231 static int next_release_must_exit;
232
233 \f/* Utilities */
234
235
236 /* Like abort, but remove grabs from widget W before. */
237
238 static void
239 abort_gracefully (w)
240 Widget w;
241 {
242 if (XtIsShell (XtParent (w)))
243 XtRemoveGrab (w);
244 XtUngrabPointer (w, CurrentTime);
245 abort ();
246 }
247
248 static void
249 push_new_stack (mw, val)
250 XlwMenuWidget mw;
251 widget_value* val;
252 {
253 if (!mw->menu.new_stack)
254 {
255 mw->menu.new_stack_length = 10;
256 mw->menu.new_stack =
257 (widget_value**)XtCalloc (mw->menu.new_stack_length,
258 sizeof (widget_value*));
259 }
260 else if (mw->menu.new_depth == mw->menu.new_stack_length)
261 {
262 mw->menu.new_stack_length *= 2;
263 mw->menu.new_stack =
264 (widget_value**)XtRealloc ((char*)mw->menu.new_stack,
265 mw->menu.new_stack_length * sizeof (widget_value*));
266 }
267 mw->menu.new_stack [mw->menu.new_depth++] = val;
268 }
269
270 static void
271 pop_new_stack_if_no_contents (mw)
272 XlwMenuWidget mw;
273 {
274 if (mw->menu.new_depth)
275 {
276 if (!mw->menu.new_stack [mw->menu.new_depth - 1]->contents)
277 mw->menu.new_depth -= 1;
278 }
279 }
280
281 static void
282 make_old_stack_space (mw, n)
283 XlwMenuWidget mw;
284 int n;
285 {
286 if (!mw->menu.old_stack)
287 {
288 mw->menu.old_stack_length = 10;
289 mw->menu.old_stack =
290 (widget_value**)XtCalloc (mw->menu.old_stack_length,
291 sizeof (widget_value*));
292 }
293 else if (mw->menu.old_stack_length < n)
294 {
295 mw->menu.old_stack_length *= 2;
296 mw->menu.old_stack =
297 (widget_value**)XtRealloc ((char*)mw->menu.old_stack,
298 mw->menu.old_stack_length * sizeof (widget_value*));
299 }
300 }
301
302 \f/* Size code */
303 int
304 string_width (mw, s)
305 XlwMenuWidget mw;
306 char *s;
307 {
308 XCharStruct xcs;
309 int drop;
310
311 XTextExtents (mw->menu.font, s, strlen (s), &drop, &drop, &drop, &xcs);
312 return xcs.width;
313 }
314
315 static int
316 arrow_width (mw)
317 XlwMenuWidget mw;
318 {
319 return (mw->menu.font->ascent * 3/4) | 1;
320 }
321
322 /* Return the width of toggle buttons of widget MW. */
323
324 static int
325 toggle_button_width (mw)
326 XlwMenuWidget mw;
327 {
328 return ((mw->menu.font->ascent + mw->menu.font->descent) * 2 / 3) | 1;
329 }
330
331
332 /* Return the width of radio buttons of widget MW. */
333
334 static int
335 radio_button_width (mw)
336 XlwMenuWidget mw;
337 {
338 return toggle_button_width (mw) * 1.41;
339 }
340
341
342 static XtResource
343 nameResource[] =
344 {
345 {"labelString", "LabelString", XtRString, sizeof(String),
346 0, XtRImmediate, 0},
347 };
348
349 static char*
350 resource_widget_value (mw, val)
351 XlwMenuWidget mw;
352 widget_value *val;
353 {
354 if (!val->toolkit_data)
355 {
356 char* resourced_name = NULL;
357 char* complete_name;
358 XtGetSubresources ((Widget) mw,
359 (XtPointer) &resourced_name,
360 val->name, val->name,
361 nameResource, 1, NULL, 0);
362 if (!resourced_name)
363 resourced_name = val->name;
364 if (!val->value)
365 {
366 complete_name = (char *) XtMalloc (strlen (resourced_name) + 1);
367 strcpy (complete_name, resourced_name);
368 }
369 else
370 {
371 int complete_length =
372 strlen (resourced_name) + strlen (val->value) + 2;
373 complete_name = XtMalloc (complete_length);
374 *complete_name = 0;
375 strcat (complete_name, resourced_name);
376 strcat (complete_name, " ");
377 strcat (complete_name, val->value);
378 }
379
380 val->toolkit_data = complete_name;
381 val->free_toolkit_data = True;
382 }
383 return (char*)val->toolkit_data;
384 }
385
386 /* Returns the sizes of an item */
387 static void
388 size_menu_item (mw, val, horizontal_p, label_width, rest_width, button_width,
389 height)
390 XlwMenuWidget mw;
391 widget_value* val;
392 int horizontal_p;
393 int* label_width;
394 int* rest_width;
395 int* button_width;
396 int* height;
397 {
398 enum menu_separator separator;
399
400 if (lw_separator_p (val->name, &separator, 0))
401 {
402 *height = separator_height (separator);
403 *label_width = 1;
404 *rest_width = 0;
405 *button_width = 0;
406 }
407 else
408 {
409 *height =
410 mw->menu.font->ascent + mw->menu.font->descent
411 + 2 * mw->menu.vertical_spacing + 2 * mw->menu.shadow_thickness;
412
413 *label_width =
414 string_width (mw, resource_widget_value (mw, val))
415 + mw->menu.horizontal_spacing + mw->menu.shadow_thickness;
416
417 *rest_width = mw->menu.horizontal_spacing + mw->menu.shadow_thickness;
418 if (!horizontal_p)
419 {
420 if (val->contents)
421 /* Add width of the arrow displayed for submenus. */
422 *rest_width += arrow_width (mw) + mw->menu.arrow_spacing;
423 else if (val->key)
424 /* Add width of key equivalent string. */
425 *rest_width += (string_width (mw, val->key)
426 + mw->menu.arrow_spacing);
427
428 if (val->button_type == BUTTON_TYPE_TOGGLE)
429 *button_width = (toggle_button_width (mw)
430 + mw->menu.horizontal_spacing);
431 else if (val->button_type == BUTTON_TYPE_RADIO)
432 *button_width = (radio_button_width (mw)
433 + mw->menu.horizontal_spacing);
434 }
435 }
436 }
437
438 static void
439 size_menu (mw, level)
440 XlwMenuWidget mw;
441 int level;
442 {
443 unsigned int label_width = 0;
444 int rest_width = 0;
445 int button_width = 0;
446 int max_rest_width = 0;
447 int max_button_width = 0;
448 unsigned int height = 0;
449 int horizontal_p = mw->menu.horizontal && (level == 0);
450 widget_value* val;
451 window_state* ws;
452
453 if (level >= mw->menu.old_depth)
454 abort_gracefully ((Widget) mw);
455
456 ws = &mw->menu.windows [level];
457 ws->width = 0;
458 ws->height = 0;
459 ws->label_width = 0;
460 ws->button_width = 0;
461
462 for (val = mw->menu.old_stack [level]->contents; val; val = val->next)
463 {
464 size_menu_item (mw, val, horizontal_p, &label_width, &rest_width,
465 &button_width, &height);
466 if (horizontal_p)
467 {
468 ws->width += label_width + rest_width;
469 if (height > ws->height)
470 ws->height = height;
471 }
472 else
473 {
474 if (label_width > ws->label_width)
475 ws->label_width = label_width;
476 if (rest_width > max_rest_width)
477 max_rest_width = rest_width;
478 if (button_width > max_button_width)
479 max_button_width = button_width;
480 ws->height += height;
481 }
482 }
483
484 if (horizontal_p)
485 ws->label_width = ws->button_width = 0;
486 else
487 {
488 ws->width = ws->label_width + max_rest_width + max_button_width;
489 ws->button_width = max_button_width;
490 }
491
492 ws->width += 2 * mw->menu.shadow_thickness;
493 ws->height += 2 * mw->menu.shadow_thickness;
494
495 if (horizontal_p)
496 {
497 ws->width += 2 * mw->menu.margin;
498 ws->height += 2 * mw->menu.margin;
499 }
500 }
501
502
503 \f/* Display code */
504
505 static void
506 draw_arrow (mw, window, gc, x, y, width, down_p)
507 XlwMenuWidget mw;
508 Window window;
509 GC gc;
510 int x;
511 int y;
512 int width;
513 int down_p;
514 {
515 Display *dpy = XtDisplay (mw);
516 GC top_gc = mw->menu.shadow_top_gc;
517 GC bottom_gc = mw->menu.shadow_bottom_gc;
518 int thickness = mw->menu.shadow_thickness;
519 int height = width;
520 XPoint pt[10];
521 /* alpha = atan (0.5)
522 factor = (1 + sin (alpha)) / cos (alpha) */
523 double factor = 1.62;
524 int thickness2 = thickness * factor;
525
526 y += (mw->menu.font->ascent + mw->menu.font->descent - height) / 2;
527
528 if (down_p)
529 {
530 GC temp;
531 temp = top_gc;
532 top_gc = bottom_gc;
533 bottom_gc = temp;
534 }
535
536 pt[0].x = x;
537 pt[0].y = y + height;
538 pt[1].x = x + thickness;
539 pt[1].y = y + height - thickness2;
540 pt[2].x = x + thickness2;
541 pt[2].y = y + thickness2;
542 pt[3].x = x;
543 pt[3].y = y;
544 XFillPolygon (dpy, window, top_gc, pt, 4, Convex, CoordModeOrigin);
545
546 pt[0].x = x;
547 pt[0].y = y;
548 pt[1].x = x + thickness;
549 pt[1].y = y + thickness2;
550 pt[2].x = x + width - thickness2;
551 pt[2].y = y + height / 2;
552 pt[3].x = x + width;
553 pt[3].y = y + height / 2;
554 XFillPolygon (dpy, window, top_gc, pt, 4, Convex, CoordModeOrigin);
555
556 pt[0].x = x;
557 pt[0].y = y + height;
558 pt[1].x = x + thickness;
559 pt[1].y = y + height - thickness2;
560 pt[2].x = x + width - thickness2;
561 pt[2].y = y + height / 2;
562 pt[3].x = x + width;
563 pt[3].y = y + height / 2;
564 XFillPolygon (dpy, window, bottom_gc, pt, 4, Convex, CoordModeOrigin);
565 }
566
567
568
569 static void
570 draw_shadow_rectangle (mw, window, x, y, width, height, erase_p, down_p)
571 XlwMenuWidget mw;
572 Window window;
573 int x;
574 int y;
575 int width;
576 int height;
577 int erase_p;
578 int down_p;
579 {
580 Display *dpy = XtDisplay (mw);
581 GC top_gc = !erase_p ? mw->menu.shadow_top_gc : mw->menu.background_gc;
582 GC bottom_gc = !erase_p ? mw->menu.shadow_bottom_gc : mw->menu.background_gc;
583 int thickness = mw->menu.shadow_thickness;
584 XPoint points [4];
585
586 if (!erase_p && down_p)
587 {
588 GC temp;
589 temp = top_gc;
590 top_gc = bottom_gc;
591 bottom_gc = temp;
592 }
593
594 points [0].x = x;
595 points [0].y = y;
596 points [1].x = x + width;
597 points [1].y = y;
598 points [2].x = x + width - thickness;
599 points [2].y = y + thickness;
600 points [3].x = x;
601 points [3].y = y + thickness;
602 XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
603 points [0].x = x;
604 points [0].y = y + thickness;
605 points [1].x = x;
606 points [1].y = y + height;
607 points [2].x = x + thickness;
608 points [2].y = y + height - thickness;
609 points [3].x = x + thickness;
610 points [3].y = y + thickness;
611 XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
612 points [0].x = x + width;
613 points [0].y = y;
614 points [1].x = x + width - thickness;
615 points [1].y = y + thickness;
616 points [2].x = x + width - thickness;
617 points [2].y = y + height - thickness;
618 points [3].x = x + width;
619 points [3].y = y + height - thickness;
620 XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
621 points [0].x = x;
622 points [0].y = y + height;
623 points [1].x = x + width;
624 points [1].y = y + height;
625 points [2].x = x + width;
626 points [2].y = y + height - thickness;
627 points [3].x = x + thickness;
628 points [3].y = y + height - thickness;
629 XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
630 }
631
632
633 static void
634 draw_shadow_rhombus (mw, window, x, y, width, height, erase_p, down_p)
635 XlwMenuWidget mw;
636 Window window;
637 int x;
638 int y;
639 int width;
640 int height;
641 int erase_p;
642 int down_p;
643 {
644 Display *dpy = XtDisplay (mw);
645 GC top_gc = !erase_p ? mw->menu.shadow_top_gc : mw->menu.background_gc;
646 GC bottom_gc = !erase_p ? mw->menu.shadow_bottom_gc : mw->menu.background_gc;
647 int thickness = mw->menu.shadow_thickness;
648 XPoint points [4];
649
650 if (!erase_p && down_p)
651 {
652 GC temp;
653 temp = top_gc;
654 top_gc = bottom_gc;
655 bottom_gc = temp;
656 }
657
658 points [0].x = x;
659 points [0].y = y + height / 2;
660 points [1].x = x + thickness;
661 points [1].y = y + height / 2;
662 points [2].x = x + width / 2;
663 points [2].y = y + thickness;
664 points [3].x = x + width / 2;
665 points [3].y = y;
666 XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
667 points [0].x = x + width / 2;
668 points [0].y = y;
669 points [1].x = x + width / 2;
670 points [1].y = y + thickness;
671 points [2].x = x + width - thickness;
672 points [2].y = y + height / 2;
673 points [3].x = x + width;
674 points [3].y = y + height / 2;
675 XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
676 points [0].x = x;
677 points [0].y = y + height / 2;
678 points [1].x = x + thickness;
679 points [1].y = y + height / 2;
680 points [2].x = x + width / 2;
681 points [2].y = y + height - thickness;
682 points [3].x = x + width / 2;
683 points [3].y = y + height;
684 XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
685 points [0].x = x + width / 2;
686 points [0].y = y + height;
687 points [1].x = x + width / 2;
688 points [1].y = y + height - thickness;
689 points [2].x = x + width - thickness;
690 points [2].y = y + height / 2;
691 points [3].x = x + width;
692 points [3].y = y + height / 2;
693 XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
694 }
695
696
697 /* Draw a toggle button on widget MW, X window WINDOW. X/Y is the
698 top-left corner of the menu item. SELECTED_P non-zero means the
699 toggle button is selected. */
700
701 static void
702 draw_toggle (mw, window, x, y, selected_p)
703 XlwMenuWidget mw;
704 Window window;
705 int x, y, selected_p;
706 {
707 int width, height;
708
709 width = toggle_button_width (mw);
710 height = width;
711 x += mw->menu.horizontal_spacing;
712 y += (mw->menu.font->ascent - height) / 2;
713 draw_shadow_rectangle (mw, window, x, y, width, height, False, selected_p);
714 }
715
716
717 /* Draw a radio button on widget MW, X window WINDOW. X/Y is the
718 top-left corner of the menu item. SELECTED_P non-zero means the
719 toggle button is selected. */
720
721 static void
722 draw_radio (mw, window, x, y, selected_p)
723 XlwMenuWidget mw;
724 Window window;
725 int x, y, selected_p;
726 {
727 int width, height;
728
729 width = radio_button_width (mw);
730 height = width;
731 x += mw->menu.horizontal_spacing;
732 y += (mw->menu.font->ascent - height) / 2;
733 draw_shadow_rhombus (mw, window, x, y, width, height, False, selected_p);
734 }
735
736
737 /* Draw a menu separator on widget MW, X window WINDOW. X/Y is the
738 top-left corner of the menu item. WIDTH is the width of the
739 separator to draw. TYPE is the separator type. */
740
741 static void
742 draw_separator (mw, window, x, y, width, type)
743 XlwMenuWidget mw;
744 Window window;
745 int x, y, width;
746 enum menu_separator type;
747 {
748 Display *dpy = XtDisplay (mw);
749 XGCValues xgcv;
750
751 switch (type)
752 {
753 case SEPARATOR_NO_LINE:
754 break;
755
756 case SEPARATOR_SINGLE_LINE:
757 XDrawLine (dpy, window, mw->menu.foreground_gc,
758 x, y, x + width, y);
759 break;
760
761 case SEPARATOR_DOUBLE_LINE:
762 draw_separator (mw, window, x, y, width, SEPARATOR_SINGLE_LINE);
763 draw_separator (mw, window, x, y + 2, width, SEPARATOR_SINGLE_LINE);
764 break;
765
766 case SEPARATOR_SINGLE_DASHED_LINE:
767 xgcv.line_style = LineOnOffDash;
768 XChangeGC (dpy, mw->menu.foreground_gc, GCLineStyle, &xgcv);
769 XDrawLine (dpy, window, mw->menu.foreground_gc,
770 x, y, x + width, y);
771 xgcv.line_style = LineSolid;
772 XChangeGC (dpy, mw->menu.foreground_gc, GCLineStyle, &xgcv);
773 break;
774
775 case SEPARATOR_DOUBLE_DASHED_LINE:
776 draw_separator (mw, window, x, y, width,
777 SEPARATOR_SINGLE_DASHED_LINE);
778 draw_separator (mw, window, x, y + 2, width,
779 SEPARATOR_SINGLE_DASHED_LINE);
780 break;
781
782 case SEPARATOR_SHADOW_ETCHED_IN:
783 XDrawLine (dpy, window, mw->menu.shadow_bottom_gc,
784 x, y, x + width, y);
785 XDrawLine (dpy, window, mw->menu.shadow_top_gc,
786 x, y + 1, x + width, y + 1);
787 break;
788
789 case SEPARATOR_SHADOW_ETCHED_OUT:
790 XDrawLine (dpy, window, mw->menu.shadow_top_gc,
791 x, y, x + width, y);
792 XDrawLine (dpy, window, mw->menu.shadow_bottom_gc,
793 x, y + 1, x + width, y + 1);
794 break;
795
796 case SEPARATOR_SHADOW_ETCHED_IN_DASH:
797 xgcv.line_style = LineOnOffDash;
798 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
799 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
800 draw_separator (mw, window, x, y, SEPARATOR_SHADOW_ETCHED_IN);
801 xgcv.line_style = LineSolid;
802 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
803 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
804 break;
805
806 case SEPARATOR_SHADOW_ETCHED_OUT_DASH:
807 xgcv.line_style = LineOnOffDash;
808 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
809 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
810 draw_separator (mw, window, x, y, SEPARATOR_SHADOW_ETCHED_OUT);
811 xgcv.line_style = LineSolid;
812 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
813 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
814 break;
815
816 case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN:
817 draw_separator (mw, window, x, y, width, SEPARATOR_SHADOW_ETCHED_IN);
818 draw_separator (mw, window, x, y + 3, width, SEPARATOR_SHADOW_ETCHED_IN);
819 break;
820
821 case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT:
822 draw_separator (mw, window, x, y, width,
823 SEPARATOR_SHADOW_ETCHED_OUT);
824 draw_separator (mw, window, x, y + 3, width,
825 SEPARATOR_SHADOW_ETCHED_OUT);
826 break;
827
828 case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH:
829 xgcv.line_style = LineOnOffDash;
830 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
831 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
832 draw_separator (mw, window, x, y, width,
833 SEPARATOR_SHADOW_DOUBLE_ETCHED_IN);
834 xgcv.line_style = LineSolid;
835 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
836 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
837 break;
838
839 case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH:
840 xgcv.line_style = LineOnOffDash;
841 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
842 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
843 draw_separator (mw, window, x, y, width,
844 SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT);
845 xgcv.line_style = LineSolid;
846 XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
847 XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
848 break;
849
850 default:
851 abort ();
852 }
853 }
854
855
856 /* Return the pixel height of menu separator SEPARATOR. */
857
858 static int
859 separator_height (separator)
860 enum menu_separator separator;
861 {
862 switch (separator)
863 {
864 case SEPARATOR_NO_LINE:
865 return 2;
866
867 case SEPARATOR_SINGLE_LINE:
868 case SEPARATOR_SINGLE_DASHED_LINE:
869 return 1;
870
871 case SEPARATOR_DOUBLE_LINE:
872 case SEPARATOR_DOUBLE_DASHED_LINE:
873 return 3;
874
875 case SEPARATOR_SHADOW_ETCHED_IN:
876 case SEPARATOR_SHADOW_ETCHED_OUT:
877 case SEPARATOR_SHADOW_ETCHED_IN_DASH:
878 case SEPARATOR_SHADOW_ETCHED_OUT_DASH:
879 return 2;
880
881 case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN:
882 case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT:
883 case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH:
884 case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH:
885 return 5;
886
887 default:
888 abort ();
889 }
890 }
891
892
893 /* Display the menu item and increment where.x and where.y to show how large
894 the menu item was. */
895
896 static void
897 display_menu_item (mw, val, ws, where, highlighted_p, horizontal_p,
898 just_compute_p)
899 XlwMenuWidget mw;
900 widget_value* val;
901 window_state* ws;
902 XPoint* where;
903 Boolean highlighted_p;
904 Boolean horizontal_p;
905 Boolean just_compute_p;
906 {
907 GC deco_gc;
908 GC text_gc;
909 int font_ascent = mw->menu.font->ascent;
910 int font_descent = mw->menu.font->descent;
911 int shadow = mw->menu.shadow_thickness;
912 int margin = mw->menu.margin;
913 int h_spacing = mw->menu.horizontal_spacing;
914 int v_spacing = mw->menu.vertical_spacing;
915 int label_width;
916 int rest_width;
917 int button_width;
918 int height;
919 int width;
920 enum menu_separator separator;
921 int separator_p = lw_separator_p (val->name, &separator, 0);
922
923 /* compute the sizes of the item */
924 size_menu_item (mw, val, horizontal_p, &label_width, &rest_width,
925 &button_width, &height);
926
927 if (horizontal_p)
928 width = label_width + rest_width;
929 else
930 {
931 label_width = ws->label_width;
932 width = ws->width - 2 * shadow;
933 }
934
935 /* Only highlight an enabled item that has a callback. */
936 if (highlighted_p)
937 if (!val->enabled || !(val->call_data || val->contents))
938 highlighted_p = 0;
939
940 /* do the drawing. */
941 if (!just_compute_p)
942 {
943 /* Add the shadow border of the containing menu */
944 int x = where->x + shadow;
945 int y = where->y + shadow;
946
947 if (horizontal_p)
948 {
949 x += margin;
950 y += margin;
951 }
952
953 /* pick the foreground and background GC. */
954 if (val->enabled)
955 text_gc = mw->menu.foreground_gc;
956 else
957 text_gc = mw->menu.inactive_gc;
958 deco_gc = mw->menu.foreground_gc;
959
960 if (separator_p)
961 {
962 draw_separator (mw, ws->window, x, y, width, separator);
963 }
964 else
965 {
966 int x_offset = x + h_spacing + shadow;
967 char* display_string = resource_widget_value (mw, val);
968 draw_shadow_rectangle (mw, ws->window, x, y, width, height, True,
969 False);
970
971 /* Deal with centering a menu title. */
972 if (!horizontal_p && !val->contents && !val->call_data)
973 {
974 int l = string_width (mw, display_string);
975
976 if (width > l)
977 x_offset = (width - l) >> 1;
978 }
979 else if (!horizontal_p && ws->button_width)
980 x_offset += ws->button_width;
981
982
983 XDrawString (XtDisplay (mw), ws->window, text_gc, x_offset,
984 y + v_spacing + shadow + font_ascent,
985 display_string, strlen (display_string));
986
987 if (!horizontal_p)
988 {
989 if (val->button_type == BUTTON_TYPE_TOGGLE)
990 draw_toggle (mw, ws->window, x, y + v_spacing + shadow,
991 val->selected);
992 else if (val->button_type == BUTTON_TYPE_RADIO)
993 draw_radio (mw, ws->window, x, y + v_spacing + shadow,
994 val->selected);
995
996 if (val->contents)
997 {
998 int a_w = arrow_width (mw);
999 draw_arrow (mw, ws->window, deco_gc,
1000 x + width - a_w
1001 - mw->menu.horizontal_spacing
1002 - mw->menu.shadow_thickness,
1003 y + v_spacing + shadow, a_w,
1004 highlighted_p);
1005 }
1006 else if (val->key)
1007 {
1008 XDrawString (XtDisplay (mw), ws->window, text_gc,
1009 x + label_width + mw->menu.arrow_spacing,
1010 y + v_spacing + shadow + font_ascent,
1011 val->key, strlen (val->key));
1012 }
1013 }
1014 else
1015 {
1016 XDrawRectangle (XtDisplay (mw), ws->window,
1017 mw->menu.background_gc,
1018 x + shadow, y + shadow,
1019 label_width + h_spacing - 1,
1020 font_ascent + font_descent + 2 * v_spacing - 1);
1021 draw_shadow_rectangle (mw, ws->window, x, y, width, height,
1022 True, False);
1023 }
1024
1025 if (highlighted_p)
1026 draw_shadow_rectangle (mw, ws->window, x, y, width, height, False,
1027 False);
1028 }
1029 }
1030
1031 where->x += width;
1032 where->y += height;
1033 }
1034
1035 static void
1036 display_menu (mw, level, just_compute_p, highlighted_pos, hit, hit_return,
1037 this, that)
1038 XlwMenuWidget mw;
1039 int level;
1040 Boolean just_compute_p;
1041 XPoint* highlighted_pos;
1042 XPoint* hit;
1043 widget_value** hit_return;
1044 widget_value* this;
1045 widget_value* that;
1046 {
1047 widget_value* val;
1048 widget_value* following_item;
1049 window_state* ws;
1050 XPoint where;
1051 int horizontal_p = mw->menu.horizontal && (level == 0);
1052 int highlighted_p;
1053 int just_compute_this_one_p;
1054 /* This is set nonzero if the element containing HIGHLIGHTED_POS
1055 is disabled, so that we do not return any subsequent element either. */
1056 int no_return = 0;
1057 enum menu_separator separator;
1058
1059 if (level >= mw->menu.old_depth)
1060 abort_gracefully ((Widget) mw);
1061
1062 if (level < mw->menu.old_depth - 1)
1063 following_item = mw->menu.old_stack [level + 1];
1064 else
1065 following_item = NULL;
1066
1067 if (hit)
1068 *hit_return = NULL;
1069
1070 where.x = 0;
1071 where.y = 0;
1072
1073 ws = &mw->menu.windows [level];
1074 for (val = mw->menu.old_stack [level]->contents; val; val = val->next)
1075 {
1076 highlighted_p = val == following_item;
1077 if (highlighted_p && highlighted_pos)
1078 {
1079 if (horizontal_p)
1080 highlighted_pos->x = where.x;
1081 else
1082 highlighted_pos->y = where.y;
1083 }
1084
1085 just_compute_this_one_p =
1086 just_compute_p || ((this || that) && val != this && val != that);
1087
1088 display_menu_item (mw, val, ws, &where, highlighted_p, horizontal_p,
1089 just_compute_this_one_p);
1090
1091 if (highlighted_p && highlighted_pos)
1092 {
1093 if (horizontal_p)
1094 highlighted_pos->y = where.y;
1095 else
1096 highlighted_pos->x = where.x;
1097 }
1098
1099 if (hit
1100 && !*hit_return
1101 && (horizontal_p ? hit->x < where.x : hit->y < where.y)
1102 && !lw_separator_p (val->name, &separator, 0)
1103 && !no_return)
1104 {
1105 if (val->enabled)
1106 *hit_return = val;
1107 else
1108 no_return = 1;
1109 }
1110
1111 if (horizontal_p)
1112 where.y = 0;
1113 else
1114 where.x = 0;
1115 }
1116
1117 if (!just_compute_p)
1118 draw_shadow_rectangle (mw, ws->window, 0, 0, ws->width, ws->height,
1119 False, False);
1120 }
1121
1122 \f/* Motion code */
1123 static void
1124 set_new_state (mw, val, level)
1125 XlwMenuWidget mw;
1126 widget_value* val;
1127 int level;
1128 {
1129 int i;
1130
1131 mw->menu.new_depth = 0;
1132 for (i = 0; i < level; i++)
1133 push_new_stack (mw, mw->menu.old_stack [i]);
1134 push_new_stack (mw, val);
1135 }
1136
1137 static void
1138 make_windows_if_needed (mw, n)
1139 XlwMenuWidget mw;
1140 int n;
1141 {
1142 int i;
1143 int start_at;
1144 XSetWindowAttributes xswa;
1145 int mask;
1146 Window root = RootWindowOfScreen (DefaultScreenOfDisplay (XtDisplay (mw)));
1147 window_state* windows;
1148
1149 if (mw->menu.windows_length >= n)
1150 return;
1151
1152 xswa.save_under = True;
1153 xswa.override_redirect = True;
1154 xswa.background_pixel = mw->core.background_pixel;
1155 xswa.border_pixel = mw->core.border_pixel;
1156 xswa.event_mask =
1157 ExposureMask | PointerMotionMask | PointerMotionHintMask
1158 | ButtonReleaseMask | ButtonPressMask;
1159 xswa.cursor = mw->menu.cursor_shape;
1160 mask = CWSaveUnder | CWOverrideRedirect | CWBackPixel | CWBorderPixel
1161 | CWEventMask | CWCursor;
1162
1163 if (!mw->menu.windows)
1164 {
1165 mw->menu.windows =
1166 (window_state*)XtMalloc (n * sizeof (window_state));
1167 start_at = 0;
1168 }
1169 else
1170 {
1171 mw->menu.windows =
1172 (window_state*)XtRealloc ((char*)mw->menu.windows,
1173 n * sizeof (window_state));
1174 start_at = mw->menu.windows_length;
1175 }
1176 mw->menu.windows_length = n;
1177
1178 windows = mw->menu.windows;
1179
1180 for (i = start_at; i < n; i++)
1181 {
1182 windows [i].x = 0;
1183 windows [i].y = 0;
1184 windows [i].width = 1;
1185 windows [i].height = 1;
1186 windows [i].window =
1187 XCreateWindow (XtDisplay (mw), root, 0, 0, 1, 1,
1188 0, 0, CopyFromParent, CopyFromParent, mask, &xswa);
1189 }
1190 }
1191
1192 /* Make the window fit in the screen */
1193 static void
1194 fit_to_screen (mw, ws, previous_ws, horizontal_p)
1195 XlwMenuWidget mw;
1196 window_state* ws;
1197 window_state* previous_ws;
1198 Boolean horizontal_p;
1199 {
1200 unsigned int screen_width = WidthOfScreen (XtScreen (mw));
1201 unsigned int screen_height = HeightOfScreen (XtScreen (mw));
1202 /* 1 if we are unable to avoid an overlap between
1203 this menu and the parent menu in the X dimension. */
1204 int horizontal_overlap = 0;
1205
1206 if (ws->x < 0)
1207 ws->x = 0;
1208 else if (ws->x + ws->width > screen_width)
1209 {
1210 if (!horizontal_p)
1211 /* The addition of shadow-thickness for a sub-menu's position is
1212 to reflect a similar adjustment when the menu is displayed to
1213 the right of the invoking menu-item; it makes the sub-menu
1214 look more `attached' to the menu-item. */
1215 ws->x = previous_ws->x - ws->width + mw->menu.shadow_thickness;
1216 else
1217 ws->x = screen_width - ws->width;
1218 if (ws->x < 0)
1219 {
1220 ws->x = 0;
1221 horizontal_overlap = 1;
1222 }
1223 }
1224 /* If we overlap in X, try to avoid overlap in Y. */
1225 if (horizontal_overlap
1226 && ws->y < previous_ws->y + previous_ws->height
1227 && previous_ws->y < ws->y + ws->height)
1228 {
1229 /* Put this menu right below or right above PREVIOUS_WS
1230 if there's room. */
1231 if (previous_ws->y + previous_ws->height + ws->height < screen_height)
1232 ws->y = previous_ws->y + previous_ws->height;
1233 else if (previous_ws->y - ws->height > 0)
1234 ws->y = previous_ws->y - ws->height;
1235 }
1236
1237 if (ws->y < 0)
1238 ws->y = 0;
1239 else if (ws->y + ws->height > screen_height)
1240 {
1241 if (horizontal_p)
1242 ws->y = previous_ws->y - ws->height;
1243 else
1244 ws->y = screen_height - ws->height;
1245 if (ws->y < 0)
1246 ws->y = 0;
1247 }
1248 }
1249
1250 /* Updates old_stack from new_stack and redisplays. */
1251 static void
1252 remap_menubar (mw)
1253 XlwMenuWidget mw;
1254 {
1255 int i;
1256 int last_same;
1257 XPoint selection_position;
1258 int old_depth = mw->menu.old_depth;
1259 int new_depth = mw->menu.new_depth;
1260 widget_value** old_stack;
1261 widget_value** new_stack;
1262 window_state* windows;
1263 widget_value* old_selection;
1264 widget_value* new_selection;
1265
1266 /* Check that enough windows and old_stack are ready. */
1267 make_windows_if_needed (mw, new_depth);
1268 make_old_stack_space (mw, new_depth);
1269 windows = mw->menu.windows;
1270 old_stack = mw->menu.old_stack;
1271 new_stack = mw->menu.new_stack;
1272
1273 /* compute the last identical different entry */
1274 for (i = 1; i < old_depth && i < new_depth; i++)
1275 if (old_stack [i] != new_stack [i])
1276 break;
1277 last_same = i - 1;
1278
1279 /* Memorize the previously selected item to be able to refresh it */
1280 old_selection = last_same + 1 < old_depth ? old_stack [last_same + 1] : NULL;
1281 if (old_selection && !old_selection->enabled)
1282 old_selection = NULL;
1283 new_selection = last_same + 1 < new_depth ? new_stack [last_same + 1] : NULL;
1284 if (new_selection && !new_selection->enabled)
1285 new_selection = NULL;
1286
1287 /* Call callback when the hightlighted item changes. */
1288 if (old_selection || new_selection)
1289 XtCallCallbackList ((Widget)mw, mw->menu.highlight,
1290 (XtPointer) new_selection);
1291
1292 /* updates old_state from new_state. It has to be done now because
1293 display_menu (called below) uses the old_stack to know what to display. */
1294 for (i = last_same + 1; i < new_depth; i++)
1295 old_stack [i] = new_stack [i];
1296 mw->menu.old_depth = new_depth;
1297
1298 /* refresh the last selection */
1299 selection_position.x = 0;
1300 selection_position.y = 0;
1301 display_menu (mw, last_same, new_selection == old_selection,
1302 &selection_position, NULL, NULL, old_selection, new_selection);
1303
1304 /* Now place the new menus. */
1305 for (i = last_same + 1; i < new_depth && new_stack[i]->contents; i++)
1306 {
1307 window_state *previous_ws = &windows[i - 1];
1308 window_state *ws = &windows[i];
1309
1310 ws->x = (previous_ws->x + selection_position.x
1311 + mw->menu.shadow_thickness);
1312 if (mw->menu.horizontal && i == 1)
1313 ws->x += mw->menu.margin;
1314
1315 #if 0
1316 if (!mw->menu.horizontal || i > 1)
1317 ws->x += mw->menu.shadow_thickness;
1318 #endif
1319
1320 ws->y = (previous_ws->y + selection_position.y
1321 + mw->menu.shadow_thickness);
1322 if (mw->menu.horizontal && i == 1)
1323 ws->y += mw->menu.margin;
1324
1325 size_menu (mw, i);
1326
1327 fit_to_screen (mw, ws, previous_ws, mw->menu.horizontal && i == 1);
1328
1329 XClearWindow (XtDisplay (mw), ws->window);
1330 XMoveResizeWindow (XtDisplay (mw), ws->window, ws->x, ws->y,
1331 ws->width, ws->height);
1332 XMapRaised (XtDisplay (mw), ws->window);
1333 display_menu (mw, i, False, &selection_position, NULL, NULL, NULL, NULL);
1334 }
1335
1336 /* unmap the menus that popped down */
1337 for (i = new_depth - 1; i < old_depth; i++)
1338 if (i >= new_depth || !new_stack[i]->contents)
1339 XUnmapWindow (XtDisplay (mw), windows[i].window);
1340 }
1341
1342 static Boolean
1343 motion_event_is_in_menu (mw, ev, level, relative_pos)
1344 XlwMenuWidget mw;
1345 XMotionEvent* ev;
1346 int level;
1347 XPoint* relative_pos;
1348 {
1349 window_state* ws = &mw->menu.windows [level];
1350 int shadow = level == 0 ? 0 : mw->menu.shadow_thickness;
1351 int x = ws->x + shadow;
1352 int y = ws->y + shadow;
1353 relative_pos->x = ev->x_root - x;
1354 relative_pos->y = ev->y_root - y;
1355 return (x - shadow < ev->x_root && ev->x_root < x + ws->width
1356 && y - shadow < ev->y_root && ev->y_root < y + ws->height);
1357 }
1358
1359 static Boolean
1360 map_event_to_widget_value (mw, ev, val, level)
1361 XlwMenuWidget mw;
1362 XMotionEvent* ev;
1363 widget_value** val;
1364 int* level;
1365 {
1366 int i;
1367 XPoint relative_pos;
1368 window_state* ws;
1369
1370 *val = NULL;
1371
1372 /* Find the window */
1373 for (i = mw->menu.old_depth - 1; i >= 0; i--)
1374 {
1375 ws = &mw->menu.windows [i];
1376 if (ws && motion_event_is_in_menu (mw, ev, i, &relative_pos))
1377 {
1378 display_menu (mw, i, True, NULL, &relative_pos, val, NULL, NULL);
1379
1380 if (*val)
1381 {
1382 *level = i + 1;
1383 return True;
1384 }
1385 }
1386 }
1387 return False;
1388 }
1389
1390 \f/* Procedures */
1391 static void
1392 make_drawing_gcs (mw)
1393 XlwMenuWidget mw;
1394 {
1395 XGCValues xgcv;
1396
1397 xgcv.font = mw->menu.font->fid;
1398 xgcv.foreground = mw->menu.foreground;
1399 xgcv.background = mw->core.background_pixel;
1400 mw->menu.foreground_gc = XtGetGC ((Widget)mw,
1401 GCFont | GCForeground | GCBackground,
1402 &xgcv);
1403
1404 xgcv.font = mw->menu.font->fid;
1405 xgcv.foreground = mw->menu.button_foreground;
1406 xgcv.background = mw->core.background_pixel;
1407 mw->menu.button_gc = XtGetGC ((Widget)mw,
1408 GCFont | GCForeground | GCBackground,
1409 &xgcv);
1410
1411 xgcv.font = mw->menu.font->fid;
1412 xgcv.foreground = mw->menu.foreground;
1413 xgcv.background = mw->core.background_pixel;
1414 xgcv.fill_style = FillStippled;
1415 xgcv.stipple = mw->menu.gray_pixmap;
1416 mw->menu.inactive_gc = XtGetGC ((Widget)mw,
1417 (GCFont | GCForeground | GCBackground
1418 | GCFillStyle | GCStipple), &xgcv);
1419
1420 xgcv.font = mw->menu.font->fid;
1421 xgcv.foreground = mw->menu.button_foreground;
1422 xgcv.background = mw->core.background_pixel;
1423 xgcv.fill_style = FillStippled;
1424 xgcv.stipple = mw->menu.gray_pixmap;
1425 mw->menu.inactive_button_gc = XtGetGC ((Widget)mw,
1426 (GCFont | GCForeground | GCBackground
1427 | GCFillStyle | GCStipple), &xgcv);
1428
1429 xgcv.font = mw->menu.font->fid;
1430 xgcv.foreground = mw->core.background_pixel;
1431 xgcv.background = mw->menu.foreground;
1432 mw->menu.background_gc = XtGetGC ((Widget)mw,
1433 GCFont | GCForeground | GCBackground,
1434 &xgcv);
1435 }
1436
1437 static void
1438 release_drawing_gcs (mw)
1439 XlwMenuWidget mw;
1440 {
1441 XtReleaseGC ((Widget) mw, mw->menu.foreground_gc);
1442 XtReleaseGC ((Widget) mw, mw->menu.button_gc);
1443 XtReleaseGC ((Widget) mw, mw->menu.inactive_gc);
1444 XtReleaseGC ((Widget) mw, mw->menu.inactive_button_gc);
1445 XtReleaseGC ((Widget) mw, mw->menu.background_gc);
1446 /* let's get some segvs if we try to use these... */
1447 mw->menu.foreground_gc = (GC) -1;
1448 mw->menu.button_gc = (GC) -1;
1449 mw->menu.inactive_gc = (GC) -1;
1450 mw->menu.inactive_button_gc = (GC) -1;
1451 mw->menu.background_gc = (GC) -1;
1452 }
1453
1454 #define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \
1455 ? ((unsigned long) (x)) : ((unsigned long) (y)))
1456
1457 static void
1458 make_shadow_gcs (mw)
1459 XlwMenuWidget mw;
1460 {
1461 XGCValues xgcv;
1462 unsigned long pm = 0;
1463 Display *dpy = XtDisplay ((Widget) mw);
1464 Screen *screen = XtScreen ((Widget) mw);
1465 Colormap cmap = mw->core.colormap;
1466 XColor topc, botc;
1467 int top_frobbed = 0, bottom_frobbed = 0;
1468
1469 mw->menu.free_top_shadow_color_p = 0;
1470 mw->menu.free_bottom_shadow_color_p = 0;
1471
1472 if (mw->menu.top_shadow_color == -1)
1473 mw->menu.top_shadow_color = mw->core.background_pixel;
1474 else
1475 mw->menu.top_shadow_color = mw->menu.top_shadow_color;
1476
1477 if (mw->menu.bottom_shadow_color == -1)
1478 mw->menu.bottom_shadow_color = mw->menu.foreground;
1479 else
1480 mw->menu.bottom_shadow_color = mw->menu.bottom_shadow_color;
1481
1482 if (mw->menu.top_shadow_color == mw->core.background_pixel ||
1483 mw->menu.top_shadow_color == mw->menu.foreground)
1484 {
1485 topc.pixel = mw->core.background_pixel;
1486 #ifdef emacs
1487 if (x_alloc_lighter_color_for_widget ((Widget) mw, dpy, cmap,
1488 &topc.pixel,
1489 1.2, 0x8000))
1490 #else
1491 XQueryColor (dpy, cmap, &topc);
1492 /* don't overflow/wrap! */
1493 topc.red = MINL (65535, topc.red * 1.2);
1494 topc.green = MINL (65535, topc.green * 1.2);
1495 topc.blue = MINL (65535, topc.blue * 1.2);
1496 if (XAllocColor (dpy, cmap, &topc))
1497 #endif
1498 {
1499 mw->menu.top_shadow_color = topc.pixel;
1500 mw->menu.free_top_shadow_color_p = 1;
1501 top_frobbed = 1;
1502 }
1503 }
1504 if (mw->menu.bottom_shadow_color == mw->menu.foreground ||
1505 mw->menu.bottom_shadow_color == mw->core.background_pixel)
1506 {
1507 botc.pixel = mw->core.background_pixel;
1508 #ifdef emacs
1509 if (x_alloc_lighter_color_for_widget ((Widget) mw, dpy, cmap,
1510 &botc.pixel,
1511 0.6, 0x4000))
1512 #else
1513 XQueryColor (dpy, cmap, &botc);
1514 botc.red *= 0.6;
1515 botc.green *= 0.6;
1516 botc.blue *= 0.6;
1517 if (XAllocColor (dpy, cmap, &botc))
1518 #endif
1519 {
1520 mw->menu.bottom_shadow_color = botc.pixel;
1521 mw->menu.free_bottom_shadow_color_p = 1;
1522 bottom_frobbed = 1;
1523 }
1524 }
1525
1526 if (top_frobbed && bottom_frobbed)
1527 {
1528 if (topc.pixel == botc.pixel)
1529 {
1530 if (botc.pixel == mw->menu.foreground)
1531 {
1532 if (mw->menu.free_top_shadow_color_p)
1533 {
1534 x_free_dpy_colors (dpy, screen, cmap,
1535 &mw->menu.top_shadow_color, 1);
1536 mw->menu.free_top_shadow_color_p = 0;
1537 }
1538 mw->menu.top_shadow_color = mw->core.background_pixel;
1539 }
1540 else
1541 {
1542 if (mw->menu.free_bottom_shadow_color_p)
1543 {
1544 x_free_dpy_colors (dpy, screen, cmap,
1545 &mw->menu.bottom_shadow_color, 1);
1546 mw->menu.free_bottom_shadow_color_p = 0;
1547 }
1548 mw->menu.bottom_shadow_color = mw->menu.foreground;
1549 }
1550 }
1551 }
1552
1553 if (!mw->menu.top_shadow_pixmap &&
1554 mw->menu.top_shadow_color == mw->core.background_pixel)
1555 {
1556 mw->menu.top_shadow_pixmap = mw->menu.gray_pixmap;
1557 if (mw->menu.free_top_shadow_color_p)
1558 {
1559 x_free_dpy_colors (dpy, screen, cmap, &mw->menu.top_shadow_color, 1);
1560 mw->menu.free_top_shadow_color_p = 0;
1561 }
1562 mw->menu.top_shadow_color = mw->menu.foreground;
1563 }
1564 if (!mw->menu.bottom_shadow_pixmap &&
1565 mw->menu.bottom_shadow_color == mw->core.background_pixel)
1566 {
1567 mw->menu.bottom_shadow_pixmap = mw->menu.gray_pixmap;
1568 if (mw->menu.free_bottom_shadow_color_p)
1569 {
1570 x_free_dpy_colors (dpy, screen, cmap,
1571 &mw->menu.bottom_shadow_color, 1);
1572 mw->menu.free_bottom_shadow_color_p = 0;
1573 }
1574 mw->menu.bottom_shadow_color = mw->menu.foreground;
1575 }
1576
1577 xgcv.fill_style = FillStippled;
1578 xgcv.foreground = mw->menu.top_shadow_color;
1579 xgcv.stipple = mw->menu.top_shadow_pixmap;
1580 pm = (xgcv.stipple ? GCStipple|GCFillStyle : 0);
1581 mw->menu.shadow_top_gc = XtGetGC ((Widget)mw, GCForeground | pm, &xgcv);
1582
1583 xgcv.foreground = mw->menu.bottom_shadow_color;
1584 xgcv.stipple = mw->menu.bottom_shadow_pixmap;
1585 pm = (xgcv.stipple ? GCStipple|GCFillStyle : 0);
1586 mw->menu.shadow_bottom_gc = XtGetGC ((Widget)mw, GCForeground | pm, &xgcv);
1587 }
1588
1589
1590 static void
1591 release_shadow_gcs (mw)
1592 XlwMenuWidget mw;
1593 {
1594 Display *dpy = XtDisplay ((Widget) mw);
1595 Screen *screen = XtScreen ((Widget) mw);
1596 Colormap cmap = mw->core.colormap;
1597 Pixel px[2];
1598 int i = 0;
1599
1600 if (mw->menu.free_top_shadow_color_p)
1601 px[i++] = mw->menu.top_shadow_color;
1602 if (mw->menu.free_bottom_shadow_color_p)
1603 px[i++] = mw->menu.bottom_shadow_color;
1604 if (i > 0)
1605 x_free_dpy_colors (dpy, screen, cmap, px, i);
1606
1607 XtReleaseGC ((Widget) mw, mw->menu.shadow_top_gc);
1608 XtReleaseGC ((Widget) mw, mw->menu.shadow_bottom_gc);
1609 }
1610
1611 static void
1612 XlwMenuInitialize (request, mw, args, num_args)
1613 Widget request;
1614 XlwMenuWidget mw;
1615 ArgList args;
1616 Cardinal *num_args;
1617 {
1618 /* Get the GCs and the widget size */
1619 XSetWindowAttributes xswa;
1620 int mask;
1621
1622 Window window = RootWindowOfScreen (DefaultScreenOfDisplay (XtDisplay (mw)));
1623 Display* display = XtDisplay (mw);
1624
1625 #if 0
1626 widget_value *tem = (widget_value *) XtMalloc (sizeof (widget_value));
1627
1628 /* _XtCreate is freeing the object that was passed to us,
1629 so make a copy that we will actually keep. */
1630 lwlib_bcopy (mw->menu.contents, tem, sizeof (widget_value));
1631 mw->menu.contents = tem;
1632 #endif
1633
1634 /* mw->menu.cursor = XCreateFontCursor (display, mw->menu.cursor_shape); */
1635 mw->menu.cursor = mw->menu.cursor_shape;
1636
1637 mw->menu.gray_pixmap
1638 = XCreatePixmapFromBitmapData (display, window, gray_bitmap_bits,
1639 gray_bitmap_width, gray_bitmap_height,
1640 (unsigned long)1, (unsigned long)0, 1);
1641
1642 /* I don't understand why this ends up 0 sometimes,
1643 but it does. This kludge works around it.
1644 Can anyone find a real fix? -- rms. */
1645 if (mw->menu.font == 0)
1646 mw->menu.font = xlwmenu_default_font;
1647
1648 make_drawing_gcs (mw);
1649 make_shadow_gcs (mw);
1650
1651 xswa.background_pixel = mw->core.background_pixel;
1652 xswa.border_pixel = mw->core.border_pixel;
1653 mask = CWBackPixel | CWBorderPixel;
1654
1655 mw->menu.popped_up = False;
1656
1657 mw->menu.old_depth = 1;
1658 mw->menu.old_stack = (widget_value**)XtMalloc (sizeof (widget_value*));
1659 mw->menu.old_stack_length = 1;
1660 mw->menu.old_stack [0] = mw->menu.contents;
1661
1662 mw->menu.new_depth = 0;
1663 mw->menu.new_stack = 0;
1664 mw->menu.new_stack_length = 0;
1665 push_new_stack (mw, mw->menu.contents);
1666
1667 mw->menu.windows = (window_state*)XtMalloc (sizeof (window_state));
1668 mw->menu.windows_length = 1;
1669 mw->menu.windows [0].x = 0;
1670 mw->menu.windows [0].y = 0;
1671 mw->menu.windows [0].width = 0;
1672 mw->menu.windows [0].height = 0;
1673 size_menu (mw, 0);
1674
1675 mw->core.width = mw->menu.windows [0].width;
1676 mw->core.height = mw->menu.windows [0].height;
1677 }
1678
1679 static void
1680 XlwMenuClassInitialize ()
1681 {
1682 }
1683
1684 static void
1685 XlwMenuRealize (w, valueMask, attributes)
1686 Widget w;
1687 Mask *valueMask;
1688 XSetWindowAttributes *attributes;
1689 {
1690 XlwMenuWidget mw = (XlwMenuWidget)w;
1691 XSetWindowAttributes xswa;
1692 int mask;
1693
1694 (*xlwMenuWidgetClass->core_class.superclass->core_class.realize)
1695 (w, valueMask, attributes);
1696
1697 xswa.save_under = True;
1698 xswa.cursor = mw->menu.cursor_shape;
1699 mask = CWSaveUnder | CWCursor;
1700 XChangeWindowAttributes (XtDisplay (w), XtWindow (w), mask, &xswa);
1701
1702 mw->menu.windows [0].window = XtWindow (w);
1703 mw->menu.windows [0].x = w->core.x;
1704 mw->menu.windows [0].y = w->core.y;
1705 mw->menu.windows [0].width = w->core.width;
1706 mw->menu.windows [0].height = w->core.height;
1707 }
1708
1709 /* Only the toplevel menubar/popup is a widget so it's the only one that
1710 receives expose events through Xt. So we repaint all the other panes
1711 when receiving an Expose event. */
1712 static void
1713 XlwMenuRedisplay (w, ev, region)
1714 Widget w;
1715 XEvent* ev;
1716 Region region;
1717 {
1718 XlwMenuWidget mw = (XlwMenuWidget)w;
1719 int i;
1720
1721 /* If we have a depth beyond 1, it's because a submenu was displayed.
1722 If the submenu has been destroyed, set the depth back to 1. */
1723 if (submenu_destroyed)
1724 {
1725 mw->menu.old_depth = 1;
1726 submenu_destroyed = 0;
1727 }
1728
1729 for (i = 0; i < mw->menu.old_depth; i++)
1730 display_menu (mw, i, False, NULL, NULL, NULL, NULL, NULL);
1731 }
1732
1733 static void
1734 XlwMenuDestroy (w)
1735 Widget w;
1736 {
1737 int i;
1738 XlwMenuWidget mw = (XlwMenuWidget) w;
1739
1740 if (pointer_grabbed)
1741 XtUngrabPointer ((Widget)w, CurrentTime);
1742 pointer_grabbed = 0;
1743
1744 submenu_destroyed = 1;
1745
1746 release_drawing_gcs (mw);
1747 release_shadow_gcs (mw);
1748
1749 /* this doesn't come from the resource db but is created explicitly
1750 so we must free it ourselves. */
1751 XFreePixmap (XtDisplay (mw), mw->menu.gray_pixmap);
1752 mw->menu.gray_pixmap = (Pixmap) -1;
1753
1754 #if 0
1755 /* Do free mw->menu.contents because nowadays we copy it
1756 during initialization. */
1757 XtFree (mw->menu.contents);
1758 #endif
1759
1760 /* Don't free mw->menu.contents because that comes from our creator.
1761 The `*_stack' elements are just pointers into `contents' so leave
1762 that alone too. But free the stacks themselves. */
1763 if (mw->menu.old_stack) XtFree ((char *) mw->menu.old_stack);
1764 if (mw->menu.new_stack) XtFree ((char *) mw->menu.new_stack);
1765
1766 /* Remember, you can't free anything that came from the resource
1767 database. This includes:
1768 mw->menu.cursor
1769 mw->menu.top_shadow_pixmap
1770 mw->menu.bottom_shadow_pixmap
1771 mw->menu.font
1772 Also the color cells of top_shadow_color, bottom_shadow_color,
1773 foreground, and button_foreground will never be freed until this
1774 client exits. Nice, eh?
1775 */
1776
1777 /* start from 1 because the one in slot 0 is w->core.window */
1778 for (i = 1; i < mw->menu.windows_length; i++)
1779 XDestroyWindow (XtDisplay (mw), mw->menu.windows [i].window);
1780 if (mw->menu.windows)
1781 XtFree ((char *) mw->menu.windows);
1782 }
1783
1784 static Boolean
1785 XlwMenuSetValues (current, request, new)
1786 Widget current;
1787 Widget request;
1788 Widget new;
1789 {
1790 XlwMenuWidget oldmw = (XlwMenuWidget)current;
1791 XlwMenuWidget newmw = (XlwMenuWidget)new;
1792 Boolean redisplay = False;
1793 int i;
1794
1795 if (newmw->menu.contents
1796 && newmw->menu.contents->contents
1797 && newmw->menu.contents->contents->change >= VISIBLE_CHANGE)
1798 redisplay = True;
1799 /* Do redisplay if the contents are entirely eliminated. */
1800 if (newmw->menu.contents
1801 && newmw->menu.contents->contents == 0
1802 && newmw->menu.contents->change >= VISIBLE_CHANGE)
1803 redisplay = True;
1804
1805 if (newmw->core.background_pixel != oldmw->core.background_pixel
1806 || newmw->menu.foreground != oldmw->menu.foreground
1807 || newmw->menu.font != oldmw->menu.font)
1808 {
1809 release_drawing_gcs (newmw);
1810 make_drawing_gcs (newmw);
1811
1812 release_shadow_gcs (newmw);
1813 /* Cause the shadow colors to be recalculated. */
1814 newmw->menu.top_shadow_color = -1;
1815 newmw->menu.bottom_shadow_color = -1;
1816 make_shadow_gcs (newmw);
1817
1818 redisplay = True;
1819
1820 if (XtIsRealized (current))
1821 /* If the menu is currently displayed, change the display. */
1822 for (i = 0; i < oldmw->menu.windows_length; i++)
1823 {
1824 XSetWindowBackground (XtDisplay (oldmw),
1825 oldmw->menu.windows [i].window,
1826 newmw->core.background_pixel);
1827 /* clear windows and generate expose events */
1828 XClearArea (XtDisplay (oldmw), oldmw->menu.windows[i].window,
1829 0, 0, 0, 0, True);
1830 }
1831 }
1832
1833 return redisplay;
1834 }
1835
1836 static void
1837 XlwMenuResize (w)
1838 Widget w;
1839 {
1840 XlwMenuWidget mw = (XlwMenuWidget)w;
1841
1842 if (mw->menu.popped_up)
1843 {
1844 /* Don't allow the popup menu to resize itself. */
1845 mw->core.width = mw->menu.windows [0].width;
1846 mw->core.height = mw->menu.windows [0].height;
1847 mw->core.parent->core.width = mw->core.width ;
1848 mw->core.parent->core.height = mw->core.height ;
1849 }
1850 else
1851 {
1852 mw->menu.windows [0].width = mw->core.width;
1853 mw->menu.windows [0].height = mw->core.height;
1854 }
1855 }
1856
1857 \f/* Action procedures */
1858 static void
1859 handle_single_motion_event (mw, ev)
1860 XlwMenuWidget mw;
1861 XMotionEvent* ev;
1862 {
1863 widget_value* val;
1864 int level;
1865
1866 if (!map_event_to_widget_value (mw, ev, &val, &level))
1867 pop_new_stack_if_no_contents (mw);
1868 else
1869 set_new_state (mw, val, level);
1870 remap_menubar (mw);
1871
1872 /* Sync with the display. Makes it feel better on X terms. */
1873 XSync (XtDisplay (mw), False);
1874 }
1875
1876 static void
1877 handle_motion_event (mw, ev)
1878 XlwMenuWidget mw;
1879 XMotionEvent* ev;
1880 {
1881 int x = ev->x_root;
1882 int y = ev->y_root;
1883 int state = ev->state;
1884
1885 handle_single_motion_event (mw, ev);
1886
1887 /* allow motion events to be generated again */
1888 if (ev->is_hint
1889 && XQueryPointer (XtDisplay (mw), ev->window,
1890 &ev->root, &ev->subwindow,
1891 &ev->x_root, &ev->y_root,
1892 &ev->x, &ev->y,
1893 &ev->state)
1894 && ev->state == state
1895 && (ev->x_root != x || ev->y_root != y))
1896 handle_single_motion_event (mw, ev);
1897 }
1898
1899 static void
1900 Start (w, ev, params, num_params)
1901 Widget w;
1902 XEvent *ev;
1903 String *params;
1904 Cardinal *num_params;
1905 {
1906 XlwMenuWidget mw = (XlwMenuWidget)w;
1907
1908 if (!mw->menu.popped_up)
1909 {
1910 menu_post_event = *ev;
1911 pop_up_menu (mw, (XButtonPressedEvent*) ev);
1912 }
1913 else
1914 {
1915 /* If we push a button while the menu is posted semipermanently,
1916 releasing the button should always pop the menu down. */
1917 next_release_must_exit = 1;
1918
1919 /* notes the absolute position of the menubar window */
1920 mw->menu.windows [0].x = ev->xmotion.x_root - ev->xmotion.x;
1921 mw->menu.windows [0].y = ev->xmotion.y_root - ev->xmotion.y;
1922
1923 /* handles the down like a move, slots are compatible */
1924 handle_motion_event (mw, &ev->xmotion);
1925 }
1926 }
1927
1928 static void
1929 Drag (w, ev, params, num_params)
1930 Widget w;
1931 XEvent *ev;
1932 String *params;
1933 Cardinal *num_params;
1934 {
1935 XlwMenuWidget mw = (XlwMenuWidget)w;
1936 if (mw->menu.popped_up)
1937 handle_motion_event (mw, &ev->xmotion);
1938 }
1939
1940 /* Do nothing.
1941 This is how we handle presses and releases of modifier keys. */
1942 static void
1943 Nothing (w, ev, params, num_params)
1944 Widget w;
1945 XEvent *ev;
1946 String *params;
1947 Cardinal *num_params;
1948 {
1949 }
1950
1951 /* Handle key press and release events while menu is popped up.
1952 Our action is to get rid of the menu. */
1953 static void
1954 Key (w, ev, params, num_params)
1955 Widget w;
1956 XEvent *ev;
1957 String *params;
1958 Cardinal *num_params;
1959 {
1960 XlwMenuWidget mw = (XlwMenuWidget)w;
1961
1962 /* Pop down everything. */
1963 mw->menu.new_depth = 1;
1964 remap_menubar (mw);
1965
1966 if (mw->menu.popped_up)
1967 {
1968 mw->menu.popped_up = False;
1969 XtUngrabPointer ((Widget)mw, ev->xmotion.time);
1970 if (XtIsShell (XtParent ((Widget) mw)))
1971 XtPopdown (XtParent ((Widget) mw));
1972 else
1973 {
1974 XtRemoveGrab ((Widget) mw);
1975 display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL);
1976 }
1977 }
1978
1979 /* callback */
1980 XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)0);
1981 }
1982
1983 static void
1984 Select (w, ev, params, num_params)
1985 Widget w;
1986 XEvent *ev;
1987 String *params;
1988 Cardinal *num_params;
1989 {
1990 XlwMenuWidget mw = (XlwMenuWidget)w;
1991 widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
1992
1993 /* If user releases the button quickly, without selecting anything,
1994 after the initial down-click that brought the menu up,
1995 do nothing. */
1996 if ((selected_item == 0
1997 || ((widget_value *) selected_item)->call_data == 0)
1998 && !next_release_must_exit
1999 && (ev->xbutton.time - menu_post_event.xbutton.time
2000 < XtGetMultiClickTime (XtDisplay (w))))
2001 return;
2002
2003 /* pop down everything. */
2004 mw->menu.new_depth = 1;
2005 remap_menubar (mw);
2006
2007 if (mw->menu.popped_up)
2008 {
2009 mw->menu.popped_up = False;
2010 XtUngrabPointer ((Widget)mw, ev->xmotion.time);
2011 if (XtIsShell (XtParent ((Widget) mw)))
2012 XtPopdown (XtParent ((Widget) mw));
2013 else
2014 {
2015 XtRemoveGrab ((Widget) mw);
2016 display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL);
2017 }
2018 }
2019
2020 /* callback */
2021 XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)selected_item);
2022 }
2023
2024
2025 \f/* Special code to pop-up a menu */
2026 void
2027 pop_up_menu (mw, event)
2028 XlwMenuWidget mw;
2029 XButtonPressedEvent* event;
2030 {
2031 int x = event->x_root;
2032 int y = event->y_root;
2033 int w;
2034 int h;
2035 int borderwidth = mw->menu.shadow_thickness;
2036 Screen* screen = XtScreen (mw);
2037 Display *display = XtDisplay (mw);
2038 int count;
2039
2040 next_release_must_exit = 0;
2041
2042 XtCallCallbackList ((Widget)mw, mw->menu.open, NULL);
2043
2044 if (XtIsShell (XtParent ((Widget)mw)))
2045 size_menu (mw, 0);
2046
2047 w = mw->menu.windows [0].width;
2048 h = mw->menu.windows [0].height;
2049
2050 x -= borderwidth;
2051 y -= borderwidth;
2052 if (x < borderwidth)
2053 x = borderwidth;
2054 if (x + w + 2 * borderwidth > WidthOfScreen (screen))
2055 x = WidthOfScreen (screen) - w - 2 * borderwidth;
2056 if (y < borderwidth)
2057 y = borderwidth;
2058 if (y + h + 2 * borderwidth> HeightOfScreen (screen))
2059 y = HeightOfScreen (screen) - h - 2 * borderwidth;
2060
2061 mw->menu.popped_up = True;
2062 if (XtIsShell (XtParent ((Widget)mw)))
2063 {
2064 XtConfigureWidget (XtParent ((Widget)mw), x, y, w, h,
2065 XtParent ((Widget)mw)->core.border_width);
2066 XtPopup (XtParent ((Widget)mw), XtGrabExclusive);
2067 display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL);
2068 mw->menu.windows [0].x = x + borderwidth;
2069 mw->menu.windows [0].y = y + borderwidth;
2070 }
2071 else
2072 {
2073 XEvent *ev = (XEvent *) event;
2074
2075 XtAddGrab ((Widget) mw, True, True);
2076
2077 /* notes the absolute position of the menubar window */
2078 mw->menu.windows [0].x = ev->xmotion.x_root - ev->xmotion.x;
2079 mw->menu.windows [0].y = ev->xmotion.y_root - ev->xmotion.y;
2080 }
2081
2082 #ifdef emacs
2083 count = x_catch_errors (display);
2084 #endif
2085 XtGrabPointer ((Widget)mw, False,
2086 (PointerMotionMask
2087 | PointerMotionHintMask
2088 | ButtonReleaseMask
2089 | ButtonPressMask),
2090 GrabModeAsync, GrabModeAsync, None,
2091 mw->menu.cursor_shape,
2092 event->time);
2093 pointer_grabbed = 1;
2094 #ifdef emacs
2095 if (x_had_errors_p (display))
2096 {
2097 pointer_grabbed = 0;
2098 XtUngrabPointer ((Widget)mw, event->time);
2099 }
2100 x_uncatch_errors (display, count);
2101 #endif
2102
2103 handle_motion_event (mw, (XMotionEvent*)event);
2104 }
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