| 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 | Alongalong with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* Created by devin@lucid.com */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | |
| 24 | #include <sys/types.h> |
| 25 | #include <X11/Xos.h> |
| 26 | #include <X11/IntrinsicP.h> |
| 27 | #include <X11/ObjectP.h> |
| 28 | #include <X11/StringDefs.h> |
| 29 | #include <X11/cursorfont.h> |
| 30 | #include <X11/bitmaps/gray> |
| 31 | #include "xlwmenuP.h" |
| 32 | |
| 33 | static int pointer_grabbed; |
| 34 | static XEvent menu_post_event; |
| 35 | |
| 36 | XFontStruct *xlwmenu_default_font; |
| 37 | |
| 38 | static char |
| 39 | xlwMenuTranslations [] = |
| 40 | "<BtnDown>: start()\n\ |
| 41 | <Motion>: drag()\n\ |
| 42 | <BtnUp>: select()\n\ |
| 43 | "; |
| 44 | |
| 45 | #define offset(field) XtOffset(XlwMenuWidget, field) |
| 46 | static XtResource |
| 47 | xlwMenuResources[] = |
| 48 | { |
| 49 | {XtNfont, XtCFont, XtRFontStruct, sizeof(XFontStruct *), |
| 50 | offset(menu.font),XtRString, "XtDefaultFont"}, |
| 51 | {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel), |
| 52 | offset(menu.foreground), XtRString, "XtDefaultForeground"}, |
| 53 | {XtNbuttonForeground, XtCButtonForeground, XtRPixel, sizeof(Pixel), |
| 54 | offset(menu.button_foreground), XtRString, "XtDefaultForeground"}, |
| 55 | {XtNmargin, XtCMargin, XtRDimension, sizeof(Dimension), |
| 56 | offset(menu.margin), XtRImmediate, (XtPointer)0}, |
| 57 | {XtNhorizontalSpacing, XtCMargin, XtRDimension, sizeof(Dimension), |
| 58 | offset(menu.horizontal_spacing), XtRImmediate, (XtPointer)3}, |
| 59 | {XtNverticalSpacing, XtCMargin, XtRDimension, sizeof(Dimension), |
| 60 | offset(menu.vertical_spacing), XtRImmediate, (XtPointer)1}, |
| 61 | {XtNarrowSpacing, XtCMargin, XtRDimension, sizeof(Dimension), |
| 62 | offset(menu.arrow_spacing), XtRImmediate, (XtPointer)10}, |
| 63 | |
| 64 | {XmNshadowThickness, XmCShadowThickness, XtRDimension, |
| 65 | sizeof (Dimension), offset (menu.shadow_thickness), |
| 66 | XtRImmediate, (XtPointer) 2}, |
| 67 | {XmNtopShadowColor, XmCTopShadowColor, XtRPixel, sizeof (Pixel), |
| 68 | offset (menu.top_shadow_color), XtRImmediate, (XtPointer)-1}, |
| 69 | {XmNbottomShadowColor, XmCBottomShadowColor, XtRPixel, sizeof (Pixel), |
| 70 | offset (menu.bottom_shadow_color), XtRImmediate, (XtPointer)-1}, |
| 71 | {XmNtopShadowPixmap, XmCTopShadowPixmap, XtRPixmap, sizeof (Pixmap), |
| 72 | offset (menu.top_shadow_pixmap), XtRImmediate, (XtPointer)None}, |
| 73 | {XmNbottomShadowPixmap, XmCBottomShadowPixmap, XtRPixmap, sizeof (Pixmap), |
| 74 | offset (menu.bottom_shadow_pixmap), XtRImmediate, (XtPointer)None}, |
| 75 | |
| 76 | {XtNopen, XtCCallback, XtRCallback, sizeof(XtPointer), |
| 77 | offset(menu.open), XtRCallback, (XtPointer)NULL}, |
| 78 | {XtNselect, XtCCallback, XtRCallback, sizeof(XtPointer), |
| 79 | offset(menu.select), XtRCallback, (XtPointer)NULL}, |
| 80 | {XtNmenu, XtCMenu, XtRPointer, sizeof(XtPointer), |
| 81 | offset(menu.contents), XtRImmediate, (XtPointer)NULL}, |
| 82 | {XtNcursor, XtCCursor, XtRCursor, sizeof(Cursor), |
| 83 | offset(menu.cursor_shape), XtRString, (XtPointer)"right_ptr"}, |
| 84 | {XtNhorizontal, XtCHorizontal, XtRInt, sizeof(int), |
| 85 | offset(menu.horizontal), XtRImmediate, (XtPointer)True}, |
| 86 | }; |
| 87 | #undef offset |
| 88 | |
| 89 | static Boolean XlwMenuSetValues(); |
| 90 | static void XlwMenuRealize(); |
| 91 | static void XlwMenuRedisplay(); |
| 92 | static void XlwMenuResize(); |
| 93 | static void XlwMenuInitialize(); |
| 94 | static void XlwMenuRedisplay(); |
| 95 | static void XlwMenuDestroy(); |
| 96 | static void XlwMenuClassInitialize(); |
| 97 | static void Start(); |
| 98 | static void Drag(); |
| 99 | static void Select(); |
| 100 | |
| 101 | static XtActionsRec |
| 102 | xlwMenuActionsList [] = |
| 103 | { |
| 104 | {"start", Start}, |
| 105 | {"drag", Drag}, |
| 106 | {"select", Select}, |
| 107 | }; |
| 108 | |
| 109 | #define SuperClass ((CoreWidgetClass)&coreClassRec) |
| 110 | |
| 111 | XlwMenuClassRec xlwMenuClassRec = |
| 112 | { |
| 113 | { /* CoreClass fields initialization */ |
| 114 | (WidgetClass) SuperClass, /* superclass */ |
| 115 | "XlwMenu", /* class_name */ |
| 116 | sizeof(XlwMenuRec), /* size */ |
| 117 | XlwMenuClassInitialize, /* class_initialize */ |
| 118 | NULL, /* class_part_initialize */ |
| 119 | FALSE, /* class_inited */ |
| 120 | XlwMenuInitialize, /* initialize */ |
| 121 | NULL, /* initialize_hook */ |
| 122 | XlwMenuRealize, /* realize */ |
| 123 | xlwMenuActionsList, /* actions */ |
| 124 | XtNumber(xlwMenuActionsList), /* num_actions */ |
| 125 | xlwMenuResources, /* resources */ |
| 126 | XtNumber(xlwMenuResources), /* resource_count */ |
| 127 | NULLQUARK, /* xrm_class */ |
| 128 | TRUE, /* compress_motion */ |
| 129 | TRUE, /* compress_exposure */ |
| 130 | TRUE, /* compress_enterleave */ |
| 131 | FALSE, /* visible_interest */ |
| 132 | XlwMenuDestroy, /* destroy */ |
| 133 | XlwMenuResize, /* resize */ |
| 134 | XlwMenuRedisplay, /* expose */ |
| 135 | XlwMenuSetValues, /* set_values */ |
| 136 | NULL, /* set_values_hook */ |
| 137 | XtInheritSetValuesAlmost, /* set_values_almost */ |
| 138 | NULL, /* get_values_hook */ |
| 139 | NULL, /* accept_focus */ |
| 140 | XtVersion, /* version */ |
| 141 | NULL, /* callback_private */ |
| 142 | xlwMenuTranslations, /* tm_table */ |
| 143 | XtInheritQueryGeometry, /* query_geometry */ |
| 144 | XtInheritDisplayAccelerator, /* display_accelerator */ |
| 145 | NULL /* extension */ |
| 146 | }, /* XlwMenuClass fields initialization */ |
| 147 | { |
| 148 | 0 /* dummy */ |
| 149 | }, |
| 150 | }; |
| 151 | |
| 152 | WidgetClass xlwMenuWidgetClass = (WidgetClass) &xlwMenuClassRec; |
| 153 | |
| 154 | int submenu_destroyed; |
| 155 | |
| 156 | static int next_release_must_exit; |
| 157 | |
| 158 | \f/* Utilities */ |
| 159 | static void |
| 160 | push_new_stack (mw, val) |
| 161 | XlwMenuWidget mw; |
| 162 | widget_value* val; |
| 163 | { |
| 164 | if (!mw->menu.new_stack) |
| 165 | { |
| 166 | mw->menu.new_stack_length = 10; |
| 167 | mw->menu.new_stack = |
| 168 | (widget_value**)XtCalloc (mw->menu.new_stack_length, |
| 169 | sizeof (widget_value*)); |
| 170 | } |
| 171 | else if (mw->menu.new_depth == mw->menu.new_stack_length) |
| 172 | { |
| 173 | mw->menu.new_stack_length *= 2; |
| 174 | mw->menu.new_stack = |
| 175 | (widget_value**)XtRealloc ((char*)mw->menu.new_stack, |
| 176 | mw->menu.new_stack_length * sizeof (widget_value*)); |
| 177 | } |
| 178 | mw->menu.new_stack [mw->menu.new_depth++] = val; |
| 179 | } |
| 180 | |
| 181 | static void |
| 182 | pop_new_stack_if_no_contents (mw) |
| 183 | XlwMenuWidget mw; |
| 184 | { |
| 185 | if (mw->menu.new_depth) |
| 186 | { |
| 187 | if (!mw->menu.new_stack [mw->menu.new_depth - 1]->contents) |
| 188 | mw->menu.new_depth -= 1; |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | static void |
| 193 | make_old_stack_space (mw, n) |
| 194 | XlwMenuWidget mw; |
| 195 | int n; |
| 196 | { |
| 197 | if (!mw->menu.old_stack) |
| 198 | { |
| 199 | mw->menu.old_stack_length = 10; |
| 200 | mw->menu.old_stack = |
| 201 | (widget_value**)XtCalloc (mw->menu.old_stack_length, |
| 202 | sizeof (widget_value*)); |
| 203 | } |
| 204 | else if (mw->menu.old_stack_length < n) |
| 205 | { |
| 206 | mw->menu.old_stack_length *= 2; |
| 207 | mw->menu.old_stack = |
| 208 | (widget_value**)XtRealloc ((char*)mw->menu.old_stack, |
| 209 | mw->menu.old_stack_length * sizeof (widget_value*)); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | \f/* Size code */ |
| 214 | static Boolean |
| 215 | all_dashes_p (s) |
| 216 | char *s; |
| 217 | { |
| 218 | char* p; |
| 219 | for (p = s; *p == '-'; p++); |
| 220 | return !*p; |
| 221 | } |
| 222 | |
| 223 | int |
| 224 | string_width (mw, s) |
| 225 | XlwMenuWidget mw; |
| 226 | char *s; |
| 227 | { |
| 228 | XCharStruct xcs; |
| 229 | int drop; |
| 230 | |
| 231 | XTextExtents (mw->menu.font, s, strlen (s), &drop, &drop, &drop, &xcs); |
| 232 | return xcs.width; |
| 233 | } |
| 234 | |
| 235 | static int |
| 236 | arrow_width (mw) |
| 237 | XlwMenuWidget mw; |
| 238 | { |
| 239 | return mw->menu.font->ascent / 2 | 1; |
| 240 | } |
| 241 | |
| 242 | static XtResource |
| 243 | nameResource[] = |
| 244 | { |
| 245 | {"labelString", "LabelString", XtRString, sizeof(String), |
| 246 | 0, XtRImmediate, 0}, |
| 247 | }; |
| 248 | |
| 249 | static char* |
| 250 | resource_widget_value (mw, val) |
| 251 | XlwMenuWidget mw; |
| 252 | widget_value *val; |
| 253 | { |
| 254 | if (!val->toolkit_data) |
| 255 | { |
| 256 | char* resourced_name = NULL; |
| 257 | char* complete_name; |
| 258 | XtGetSubresources ((Widget) mw, |
| 259 | (XtPointer) &resourced_name, |
| 260 | val->name, val->name, |
| 261 | nameResource, 1, NULL, 0); |
| 262 | if (!resourced_name) |
| 263 | resourced_name = val->name; |
| 264 | if (!val->value) |
| 265 | { |
| 266 | complete_name = (char *) XtMalloc (strlen (resourced_name) + 1); |
| 267 | strcpy (complete_name, resourced_name); |
| 268 | } |
| 269 | else |
| 270 | { |
| 271 | int complete_length = |
| 272 | strlen (resourced_name) + strlen (val->value) + 2; |
| 273 | complete_name = XtMalloc (complete_length); |
| 274 | *complete_name = 0; |
| 275 | strcat (complete_name, resourced_name); |
| 276 | strcat (complete_name, " "); |
| 277 | strcat (complete_name, val->value); |
| 278 | } |
| 279 | |
| 280 | val->toolkit_data = complete_name; |
| 281 | val->free_toolkit_data = True; |
| 282 | } |
| 283 | return (char*)val->toolkit_data; |
| 284 | } |
| 285 | |
| 286 | /* Returns the sizes of an item */ |
| 287 | static void |
| 288 | size_menu_item (mw, val, horizontal_p, label_width, rest_width, height) |
| 289 | XlwMenuWidget mw; |
| 290 | widget_value* val; |
| 291 | int horizontal_p; |
| 292 | int* label_width; |
| 293 | int* rest_width; |
| 294 | int* height; |
| 295 | { |
| 296 | if (all_dashes_p (val->name)) |
| 297 | { |
| 298 | *height = 2; |
| 299 | *label_width = 1; |
| 300 | *rest_width = 0; |
| 301 | } |
| 302 | else |
| 303 | { |
| 304 | *height = |
| 305 | mw->menu.font->ascent + mw->menu.font->descent |
| 306 | + 2 * mw->menu.vertical_spacing + 2 * mw->menu.shadow_thickness; |
| 307 | |
| 308 | *label_width = |
| 309 | string_width (mw, resource_widget_value (mw, val)) |
| 310 | + mw->menu.horizontal_spacing + mw->menu.shadow_thickness; |
| 311 | |
| 312 | *rest_width = mw->menu.horizontal_spacing + mw->menu.shadow_thickness; |
| 313 | if (!horizontal_p) |
| 314 | { |
| 315 | if (val->contents) |
| 316 | *rest_width += arrow_width (mw) + mw->menu.arrow_spacing; |
| 317 | else if (val->key) |
| 318 | *rest_width += |
| 319 | string_width (mw, val->key) + mw->menu.arrow_spacing; |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | static void |
| 325 | size_menu (mw, level) |
| 326 | XlwMenuWidget mw; |
| 327 | int level; |
| 328 | { |
| 329 | int label_width = 0; |
| 330 | int rest_width = 0; |
| 331 | int max_rest_width = 0; |
| 332 | int height = 0; |
| 333 | int horizontal_p = mw->menu.horizontal && (level == 0); |
| 334 | widget_value* val; |
| 335 | window_state* ws; |
| 336 | |
| 337 | if (level >= mw->menu.old_depth) |
| 338 | abort (); |
| 339 | |
| 340 | ws = &mw->menu.windows [level]; |
| 341 | ws->width = 0; |
| 342 | ws->height = 0; |
| 343 | ws->label_width = 0; |
| 344 | |
| 345 | for (val = mw->menu.old_stack [level]->contents; val; val = val->next) |
| 346 | { |
| 347 | size_menu_item (mw, val, horizontal_p, &label_width, &rest_width, |
| 348 | &height); |
| 349 | if (horizontal_p) |
| 350 | { |
| 351 | ws->width += label_width + rest_width; |
| 352 | if (height > ws->height) |
| 353 | ws->height = height; |
| 354 | } |
| 355 | else |
| 356 | { |
| 357 | if (label_width > ws->label_width) |
| 358 | ws->label_width = label_width; |
| 359 | if (rest_width > max_rest_width) |
| 360 | max_rest_width = rest_width; |
| 361 | ws->height += height; |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | if (horizontal_p) |
| 366 | ws->label_width = 0; |
| 367 | else |
| 368 | ws->width = ws->label_width + max_rest_width; |
| 369 | |
| 370 | ws->width += 2 * mw->menu.shadow_thickness; |
| 371 | ws->height += 2 * mw->menu.shadow_thickness; |
| 372 | } |
| 373 | |
| 374 | |
| 375 | \f/* Display code */ |
| 376 | static void |
| 377 | draw_arrow (mw, window, gc, x, y, width) |
| 378 | XlwMenuWidget mw; |
| 379 | Window window; |
| 380 | GC gc; |
| 381 | int x; |
| 382 | int y; |
| 383 | int width; |
| 384 | { |
| 385 | XPoint points [3]; |
| 386 | points [0].x = x; |
| 387 | points [0].y = y + mw->menu.font->ascent; |
| 388 | points [1].x = x; |
| 389 | points [1].y = y; |
| 390 | points [2].x = x + width; |
| 391 | points [2].y = y + mw->menu.font->ascent / 2; |
| 392 | |
| 393 | XFillPolygon (XtDisplay (mw), window, gc, points, 3, Convex, |
| 394 | CoordModeOrigin); |
| 395 | } |
| 396 | |
| 397 | static void |
| 398 | draw_shadow_rectangle (mw, window, x, y, width, height, erase_p) |
| 399 | XlwMenuWidget mw; |
| 400 | Window window; |
| 401 | int x; |
| 402 | int y; |
| 403 | int width; |
| 404 | int height; |
| 405 | int erase_p; |
| 406 | { |
| 407 | Display *dpy = XtDisplay (mw); |
| 408 | GC top_gc = !erase_p ? mw->menu.shadow_top_gc : mw->menu.background_gc; |
| 409 | GC bottom_gc = !erase_p ? mw->menu.shadow_bottom_gc : mw->menu.background_gc; |
| 410 | int thickness = mw->menu.shadow_thickness; |
| 411 | XPoint points [4]; |
| 412 | points [0].x = x; |
| 413 | points [0].y = y; |
| 414 | points [1].x = x + width; |
| 415 | points [1].y = y; |
| 416 | points [2].x = x + width - thickness; |
| 417 | points [2].y = y + thickness; |
| 418 | points [3].x = x; |
| 419 | points [3].y = y + thickness; |
| 420 | XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin); |
| 421 | points [0].x = x; |
| 422 | points [0].y = y + thickness; |
| 423 | points [1].x = x; |
| 424 | points [1].y = y + height; |
| 425 | points [2].x = x + thickness; |
| 426 | points [2].y = y + height - thickness; |
| 427 | points [3].x = x + thickness; |
| 428 | points [3].y = y + thickness; |
| 429 | XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin); |
| 430 | points [0].x = x + width; |
| 431 | points [0].y = y; |
| 432 | points [1].x = x + width - thickness; |
| 433 | points [1].y = y + thickness; |
| 434 | points [2].x = x + width - thickness; |
| 435 | points [2].y = y + height - thickness; |
| 436 | points [3].x = x + width; |
| 437 | points [3].y = y + height - thickness; |
| 438 | XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin); |
| 439 | points [0].x = x; |
| 440 | points [0].y = y + height; |
| 441 | points [1].x = x + width; |
| 442 | points [1].y = y + height; |
| 443 | points [2].x = x + width; |
| 444 | points [2].y = y + height - thickness; |
| 445 | points [3].x = x + thickness; |
| 446 | points [3].y = y + height - thickness; |
| 447 | XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin); |
| 448 | } |
| 449 | |
| 450 | |
| 451 | /* Display the menu item and increment where.x and where.y to show how large |
| 452 | ** the menu item was. |
| 453 | */ |
| 454 | static void |
| 455 | display_menu_item (mw, val, ws, where, highlighted_p, horizontal_p, just_compute_p) |
| 456 | XlwMenuWidget mw; |
| 457 | widget_value* val; |
| 458 | window_state* ws; |
| 459 | XPoint* where; |
| 460 | Boolean highlighted_p; |
| 461 | Boolean horizontal_p; |
| 462 | Boolean just_compute_p; |
| 463 | { |
| 464 | GC deco_gc; |
| 465 | GC text_gc; |
| 466 | int font_ascent = mw->menu.font->ascent; |
| 467 | int font_descent = mw->menu.font->descent; |
| 468 | int shadow = mw->menu.shadow_thickness; |
| 469 | int separator_p = all_dashes_p (val->name); |
| 470 | int h_spacing = mw->menu.horizontal_spacing; |
| 471 | int v_spacing = mw->menu.vertical_spacing; |
| 472 | int label_width; |
| 473 | int rest_width; |
| 474 | int height; |
| 475 | int width; |
| 476 | int button_p; |
| 477 | |
| 478 | /* compute the sizes of the item */ |
| 479 | size_menu_item (mw, val, horizontal_p, &label_width, &rest_width, &height); |
| 480 | |
| 481 | if (horizontal_p) |
| 482 | width = label_width + rest_width; |
| 483 | else |
| 484 | { |
| 485 | label_width = ws->label_width; |
| 486 | width = ws->width - 2 * shadow; |
| 487 | } |
| 488 | |
| 489 | /* see if it should be a button in the menubar */ |
| 490 | button_p = horizontal_p && val->call_data; |
| 491 | |
| 492 | /* Only highlight an enabled item that has a callback. */ |
| 493 | if (highlighted_p) |
| 494 | if (!val->enabled || !(val->call_data || val->contents)) |
| 495 | highlighted_p = 0; |
| 496 | |
| 497 | /* do the drawing. */ |
| 498 | if (!just_compute_p) |
| 499 | { |
| 500 | /* Add the shadow border of the containing menu */ |
| 501 | int x = where->x + shadow; |
| 502 | int y = where->y + shadow; |
| 503 | |
| 504 | /* pick the foreground and background GC. */ |
| 505 | if (val->enabled) |
| 506 | text_gc = button_p ? mw->menu.button_gc : mw->menu.foreground_gc; |
| 507 | else |
| 508 | text_gc = |
| 509 | button_p ? mw->menu.inactive_button_gc : mw->menu.inactive_gc; |
| 510 | deco_gc = mw->menu.foreground_gc; |
| 511 | |
| 512 | if (separator_p) |
| 513 | { |
| 514 | XDrawLine (XtDisplay (mw), ws->window, mw->menu.shadow_bottom_gc, |
| 515 | x, y, x + width, y); |
| 516 | XDrawLine (XtDisplay (mw), ws->window, mw->menu.shadow_top_gc, |
| 517 | x, y + 1, x + width, y + 1); |
| 518 | } |
| 519 | else |
| 520 | { |
| 521 | int x_offset = x + h_spacing + shadow; |
| 522 | char* display_string = resource_widget_value (mw, val); |
| 523 | draw_shadow_rectangle (mw, ws->window, x, y, width, height, True); |
| 524 | |
| 525 | /* Deal with centering a menu title. */ |
| 526 | if (!horizontal_p && !val->contents && !val->call_data) |
| 527 | { |
| 528 | int l = string_width (mw, display_string); |
| 529 | |
| 530 | if (width > l) |
| 531 | x_offset = (width - l) >> 1; |
| 532 | } |
| 533 | XDrawString (XtDisplay (mw), ws->window, text_gc, x_offset, |
| 534 | y + v_spacing + shadow + font_ascent, |
| 535 | display_string, strlen (display_string)); |
| 536 | |
| 537 | if (!horizontal_p) |
| 538 | { |
| 539 | if (val->contents) |
| 540 | { |
| 541 | int a_w = arrow_width (mw); |
| 542 | draw_arrow (mw, ws->window, deco_gc, |
| 543 | x + width - arrow_width (mw) |
| 544 | - mw->menu.horizontal_spacing |
| 545 | - mw->menu.shadow_thickness, |
| 546 | y + v_spacing + shadow, a_w); |
| 547 | } |
| 548 | else if (val->key) |
| 549 | { |
| 550 | XDrawString (XtDisplay (mw), ws->window, text_gc, |
| 551 | x + label_width + mw->menu.arrow_spacing, |
| 552 | y + v_spacing + shadow + font_ascent, |
| 553 | val->key, strlen (val->key)); |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | else if (button_p) |
| 558 | { |
| 559 | #if 1 |
| 560 | XDrawRectangle (XtDisplay (mw), ws->window, deco_gc, |
| 561 | x + shadow, y + shadow, |
| 562 | label_width + h_spacing - 1, |
| 563 | font_ascent + font_descent + 2 * v_spacing - 1); |
| 564 | draw_shadow_rectangle (mw, ws->window, x, y, width, height, |
| 565 | False); |
| 566 | #else |
| 567 | highlighted_p = True; |
| 568 | #endif |
| 569 | } |
| 570 | else |
| 571 | { |
| 572 | XDrawRectangle (XtDisplay (mw), ws->window, |
| 573 | mw->menu.background_gc, |
| 574 | x + shadow, y + shadow, |
| 575 | label_width + h_spacing - 1, |
| 576 | font_ascent + font_descent + 2 * v_spacing - 1); |
| 577 | draw_shadow_rectangle (mw, ws->window, x, y, width, height, |
| 578 | True); |
| 579 | } |
| 580 | |
| 581 | if (highlighted_p) |
| 582 | draw_shadow_rectangle (mw, ws->window, x, y, width, height, False); |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | where->x += width; |
| 587 | where->y += height; |
| 588 | } |
| 589 | |
| 590 | static void |
| 591 | display_menu (mw, level, just_compute_p, highlighted_pos, hit, hit_return, |
| 592 | this, that) |
| 593 | XlwMenuWidget mw; |
| 594 | int level; |
| 595 | Boolean just_compute_p; |
| 596 | XPoint* highlighted_pos; |
| 597 | XPoint* hit; |
| 598 | widget_value** hit_return; |
| 599 | widget_value* this; |
| 600 | widget_value* that; |
| 601 | { |
| 602 | widget_value* val; |
| 603 | widget_value* following_item; |
| 604 | window_state* ws; |
| 605 | XPoint where; |
| 606 | int horizontal_p = mw->menu.horizontal && (level == 0); |
| 607 | int highlighted_p; |
| 608 | int just_compute_this_one_p; |
| 609 | |
| 610 | if (level >= mw->menu.old_depth) |
| 611 | abort (); |
| 612 | |
| 613 | if (level < mw->menu.old_depth - 1) |
| 614 | following_item = mw->menu.old_stack [level + 1]; |
| 615 | else |
| 616 | following_item = NULL; |
| 617 | |
| 618 | if (hit) |
| 619 | *hit_return = NULL; |
| 620 | |
| 621 | where.x = 0; |
| 622 | where.y = 0; |
| 623 | |
| 624 | ws = &mw->menu.windows [level]; |
| 625 | for (val = mw->menu.old_stack [level]->contents; val; val = val->next) |
| 626 | { |
| 627 | highlighted_p = val == following_item; |
| 628 | if (highlighted_p && highlighted_pos) |
| 629 | { |
| 630 | if (horizontal_p) |
| 631 | highlighted_pos->x = where.x; |
| 632 | else |
| 633 | highlighted_pos->y = where.y; |
| 634 | } |
| 635 | |
| 636 | just_compute_this_one_p = |
| 637 | just_compute_p || ((this || that) && val != this && val != that); |
| 638 | |
| 639 | display_menu_item (mw, val, ws, &where, highlighted_p, horizontal_p, |
| 640 | just_compute_this_one_p); |
| 641 | |
| 642 | if (highlighted_p && highlighted_pos) |
| 643 | { |
| 644 | if (horizontal_p) |
| 645 | highlighted_pos->y = where.y; |
| 646 | else |
| 647 | highlighted_pos->x = where.x; |
| 648 | } |
| 649 | |
| 650 | if (hit |
| 651 | && !*hit_return |
| 652 | && (horizontal_p ? hit->x < where.x : hit->y < where.y) |
| 653 | && !all_dashes_p (val->name)) |
| 654 | *hit_return = val; |
| 655 | |
| 656 | if (horizontal_p) |
| 657 | where.y = 0; |
| 658 | else |
| 659 | where.x = 0; |
| 660 | } |
| 661 | |
| 662 | if (!just_compute_p) |
| 663 | draw_shadow_rectangle (mw, ws->window, 0, 0, ws->width, ws->height, False); |
| 664 | } |
| 665 | |
| 666 | \f/* Motion code */ |
| 667 | static void |
| 668 | set_new_state (mw, val, level) |
| 669 | XlwMenuWidget mw; |
| 670 | widget_value* val; |
| 671 | int level; |
| 672 | { |
| 673 | int i; |
| 674 | |
| 675 | mw->menu.new_depth = 0; |
| 676 | for (i = 0; i < level; i++) |
| 677 | push_new_stack (mw, mw->menu.old_stack [i]); |
| 678 | push_new_stack (mw, val); |
| 679 | } |
| 680 | |
| 681 | static void |
| 682 | make_windows_if_needed (mw, n) |
| 683 | XlwMenuWidget mw; |
| 684 | int n; |
| 685 | { |
| 686 | int i; |
| 687 | int start_at; |
| 688 | XSetWindowAttributes xswa; |
| 689 | int mask; |
| 690 | Window root = RootWindowOfScreen (DefaultScreenOfDisplay (XtDisplay (mw))); |
| 691 | window_state* windows; |
| 692 | |
| 693 | if (mw->menu.windows_length >= n) |
| 694 | return; |
| 695 | |
| 696 | xswa.save_under = True; |
| 697 | xswa.override_redirect = True; |
| 698 | xswa.background_pixel = mw->core.background_pixel; |
| 699 | xswa.border_pixel = mw->core.border_pixel; |
| 700 | xswa.event_mask = |
| 701 | ExposureMask | PointerMotionMask | PointerMotionHintMask |
| 702 | | ButtonReleaseMask | ButtonPressMask; |
| 703 | xswa.cursor = mw->menu.cursor_shape; |
| 704 | mask = CWSaveUnder | CWOverrideRedirect | CWBackPixel | CWBorderPixel |
| 705 | | CWEventMask | CWCursor; |
| 706 | |
| 707 | if (!mw->menu.windows) |
| 708 | { |
| 709 | mw->menu.windows = |
| 710 | (window_state*)XtMalloc (n * sizeof (window_state)); |
| 711 | start_at = 0; |
| 712 | } |
| 713 | else |
| 714 | { |
| 715 | mw->menu.windows = |
| 716 | (window_state*)XtRealloc ((char*)mw->menu.windows, |
| 717 | n * sizeof (window_state)); |
| 718 | start_at = mw->menu.windows_length; |
| 719 | } |
| 720 | mw->menu.windows_length = n; |
| 721 | |
| 722 | windows = mw->menu.windows; |
| 723 | |
| 724 | for (i = start_at; i < n; i++) |
| 725 | { |
| 726 | windows [i].x = 0; |
| 727 | windows [i].y = 0; |
| 728 | windows [i].width = 1; |
| 729 | windows [i].height = 1; |
| 730 | windows [i].window = |
| 731 | XCreateWindow (XtDisplay (mw), root, 0, 0, 1, 1, |
| 732 | 0, 0, CopyFromParent, CopyFromParent, mask, &xswa); |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | /* Make the window fit in the screen */ |
| 737 | static void |
| 738 | fit_to_screen (mw, ws, previous_ws, horizontal_p) |
| 739 | XlwMenuWidget mw; |
| 740 | window_state* ws; |
| 741 | window_state* previous_ws; |
| 742 | Boolean horizontal_p; |
| 743 | { |
| 744 | int screen_width = WidthOfScreen (XtScreen (mw)); |
| 745 | int screen_height = HeightOfScreen (XtScreen (mw)); |
| 746 | |
| 747 | if (ws->x < 0) |
| 748 | ws->x = 0; |
| 749 | else if (ws->x + ws->width > screen_width) |
| 750 | { |
| 751 | if (!horizontal_p) |
| 752 | ws->x = previous_ws->x - ws->width; |
| 753 | else |
| 754 | ws->x = screen_width - ws->width; |
| 755 | if (ws->x < 0) |
| 756 | ws->x = 0; |
| 757 | } |
| 758 | if (ws->y < 0) |
| 759 | ws->y = 0; |
| 760 | else if (ws->y + ws->height > screen_height) |
| 761 | { |
| 762 | if (horizontal_p) |
| 763 | ws->y = previous_ws->y - ws->height; |
| 764 | else |
| 765 | ws->y = screen_height - ws->height; |
| 766 | if (ws->y < 0) |
| 767 | ws->y = 0; |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | /* Updates old_stack from new_stack and redisplays. */ |
| 772 | static void |
| 773 | remap_menubar (mw) |
| 774 | XlwMenuWidget mw; |
| 775 | { |
| 776 | int i; |
| 777 | int last_same; |
| 778 | XPoint selection_position; |
| 779 | int old_depth = mw->menu.old_depth; |
| 780 | int new_depth = mw->menu.new_depth; |
| 781 | widget_value** old_stack; |
| 782 | widget_value** new_stack; |
| 783 | window_state* windows; |
| 784 | widget_value* old_selection; |
| 785 | widget_value* new_selection; |
| 786 | |
| 787 | /* Check that enough windows and old_stack are ready. */ |
| 788 | make_windows_if_needed (mw, new_depth); |
| 789 | make_old_stack_space (mw, new_depth); |
| 790 | windows = mw->menu.windows; |
| 791 | old_stack = mw->menu.old_stack; |
| 792 | new_stack = mw->menu.new_stack; |
| 793 | |
| 794 | /* compute the last identical different entry */ |
| 795 | for (i = 1; i < old_depth && i < new_depth; i++) |
| 796 | if (old_stack [i] != new_stack [i]) |
| 797 | break; |
| 798 | last_same = i - 1; |
| 799 | |
| 800 | /* Memorize the previously selected item to be able to refresh it */ |
| 801 | old_selection = last_same + 1 < old_depth ? old_stack [last_same + 1] : NULL; |
| 802 | if (old_selection && !old_selection->enabled) |
| 803 | old_selection = NULL; |
| 804 | new_selection = last_same + 1 < new_depth ? new_stack [last_same + 1] : NULL; |
| 805 | if (new_selection && !new_selection->enabled) |
| 806 | new_selection = NULL; |
| 807 | |
| 808 | /* updates old_state from new_state. It has to be done now because |
| 809 | display_menu (called below) uses the old_stack to know what to display. */ |
| 810 | for (i = last_same + 1; i < new_depth; i++) |
| 811 | old_stack [i] = new_stack [i]; |
| 812 | mw->menu.old_depth = new_depth; |
| 813 | |
| 814 | /* refresh the last seletion */ |
| 815 | selection_position.x = 0; |
| 816 | selection_position.y = 0; |
| 817 | display_menu (mw, last_same, new_selection == old_selection, |
| 818 | &selection_position, NULL, NULL, old_selection, new_selection); |
| 819 | |
| 820 | /* Now popup the new menus */ |
| 821 | for (i = last_same + 1; i < new_depth && new_stack [i]->contents; i++) |
| 822 | { |
| 823 | window_state* previous_ws = &windows [i - 1]; |
| 824 | window_state* ws = &windows [i]; |
| 825 | |
| 826 | ws->x = |
| 827 | previous_ws->x + selection_position.x + mw->menu.shadow_thickness; |
| 828 | if (!mw->menu.horizontal || i > 1) |
| 829 | ws->x += mw->menu.shadow_thickness; |
| 830 | ws->y = |
| 831 | previous_ws->y + selection_position.y + mw->menu.shadow_thickness; |
| 832 | |
| 833 | size_menu (mw, i); |
| 834 | |
| 835 | fit_to_screen (mw, ws, previous_ws, mw->menu.horizontal && i == 1); |
| 836 | |
| 837 | XClearWindow (XtDisplay (mw), ws->window); |
| 838 | XMoveResizeWindow (XtDisplay (mw), ws->window, ws->x, ws->y, |
| 839 | ws->width, ws->height); |
| 840 | XMapRaised (XtDisplay (mw), ws->window); |
| 841 | display_menu (mw, i, False, &selection_position, NULL, NULL, NULL, NULL); |
| 842 | } |
| 843 | |
| 844 | /* unmap the menus that popped down */ |
| 845 | for (i = new_depth - 1; i < old_depth; i++) |
| 846 | if (i >= new_depth || !new_stack [i]->contents) |
| 847 | XUnmapWindow (XtDisplay (mw), windows [i].window); |
| 848 | } |
| 849 | |
| 850 | static Boolean |
| 851 | motion_event_is_in_menu (mw, ev, level, relative_pos) |
| 852 | XlwMenuWidget mw; |
| 853 | XMotionEvent* ev; |
| 854 | int level; |
| 855 | XPoint* relative_pos; |
| 856 | { |
| 857 | window_state* ws = &mw->menu.windows [level]; |
| 858 | int x = level == 0 ? ws->x : ws->x + mw->menu.shadow_thickness; |
| 859 | int y = level == 0 ? ws->y : ws->y + mw->menu.shadow_thickness; |
| 860 | relative_pos->x = ev->x_root - x; |
| 861 | relative_pos->y = ev->y_root - y; |
| 862 | return (x < ev->x_root && ev->x_root < x + ws->width |
| 863 | && y < ev->y_root && ev->y_root < y + ws->height); |
| 864 | } |
| 865 | |
| 866 | static Boolean |
| 867 | map_event_to_widget_value (mw, ev, val, level) |
| 868 | XlwMenuWidget mw; |
| 869 | XMotionEvent* ev; |
| 870 | widget_value** val; |
| 871 | int* level; |
| 872 | { |
| 873 | int i; |
| 874 | XPoint relative_pos; |
| 875 | window_state* ws; |
| 876 | |
| 877 | *val = NULL; |
| 878 | |
| 879 | /* Find the window */ |
| 880 | for (i = mw->menu.old_depth - 1; i >= 0; i--) |
| 881 | { |
| 882 | ws = &mw->menu.windows [i]; |
| 883 | if (ws && motion_event_is_in_menu (mw, ev, i, &relative_pos)) |
| 884 | { |
| 885 | display_menu (mw, i, True, NULL, &relative_pos, val, NULL, NULL); |
| 886 | |
| 887 | if (*val) |
| 888 | { |
| 889 | *level = i + 1; |
| 890 | return True; |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | return False; |
| 895 | } |
| 896 | |
| 897 | \f/* Procedures */ |
| 898 | static void |
| 899 | make_drawing_gcs (mw) |
| 900 | XlwMenuWidget mw; |
| 901 | { |
| 902 | XGCValues xgcv; |
| 903 | |
| 904 | xgcv.font = mw->menu.font->fid; |
| 905 | xgcv.foreground = mw->menu.foreground; |
| 906 | xgcv.background = mw->core.background_pixel; |
| 907 | mw->menu.foreground_gc = XtGetGC ((Widget)mw, |
| 908 | GCFont | GCForeground | GCBackground, |
| 909 | &xgcv); |
| 910 | |
| 911 | xgcv.font = mw->menu.font->fid; |
| 912 | xgcv.foreground = mw->menu.button_foreground; |
| 913 | xgcv.background = mw->core.background_pixel; |
| 914 | mw->menu.button_gc = XtGetGC ((Widget)mw, |
| 915 | GCFont | GCForeground | GCBackground, |
| 916 | &xgcv); |
| 917 | |
| 918 | xgcv.font = mw->menu.font->fid; |
| 919 | xgcv.foreground = mw->menu.foreground; |
| 920 | xgcv.background = mw->core.background_pixel; |
| 921 | xgcv.fill_style = FillStippled; |
| 922 | xgcv.stipple = mw->menu.gray_pixmap; |
| 923 | mw->menu.inactive_gc = XtGetGC ((Widget)mw, |
| 924 | (GCFont | GCForeground | GCBackground |
| 925 | | GCFillStyle | GCStipple), &xgcv); |
| 926 | |
| 927 | xgcv.font = mw->menu.font->fid; |
| 928 | xgcv.foreground = mw->menu.button_foreground; |
| 929 | xgcv.background = mw->core.background_pixel; |
| 930 | xgcv.fill_style = FillStippled; |
| 931 | xgcv.stipple = mw->menu.gray_pixmap; |
| 932 | mw->menu.inactive_button_gc = XtGetGC ((Widget)mw, |
| 933 | (GCFont | GCForeground | GCBackground |
| 934 | | GCFillStyle | GCStipple), &xgcv); |
| 935 | |
| 936 | xgcv.font = mw->menu.font->fid; |
| 937 | xgcv.foreground = mw->core.background_pixel; |
| 938 | xgcv.background = mw->menu.foreground; |
| 939 | mw->menu.background_gc = XtGetGC ((Widget)mw, |
| 940 | GCFont | GCForeground | GCBackground, |
| 941 | &xgcv); |
| 942 | } |
| 943 | |
| 944 | static void |
| 945 | release_drawing_gcs (mw) |
| 946 | XlwMenuWidget mw; |
| 947 | { |
| 948 | XtReleaseGC ((Widget) mw, mw->menu.foreground_gc); |
| 949 | XtReleaseGC ((Widget) mw, mw->menu.button_gc); |
| 950 | XtReleaseGC ((Widget) mw, mw->menu.inactive_gc); |
| 951 | XtReleaseGC ((Widget) mw, mw->menu.inactive_button_gc); |
| 952 | XtReleaseGC ((Widget) mw, mw->menu.background_gc); |
| 953 | /* let's get some segvs if we try to use these... */ |
| 954 | mw->menu.foreground_gc = (GC) -1; |
| 955 | mw->menu.button_gc = (GC) -1; |
| 956 | mw->menu.inactive_gc = (GC) -1; |
| 957 | mw->menu.inactive_button_gc = (GC) -1; |
| 958 | mw->menu.background_gc = (GC) -1; |
| 959 | } |
| 960 | |
| 961 | #define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \ |
| 962 | ? ((unsigned long) (x)) : ((unsigned long) (y))) |
| 963 | |
| 964 | static void |
| 965 | make_shadow_gcs (mw) |
| 966 | XlwMenuWidget mw; |
| 967 | { |
| 968 | XGCValues xgcv; |
| 969 | unsigned long pm = 0; |
| 970 | Display *dpy = XtDisplay ((Widget) mw); |
| 971 | Colormap cmap = DefaultColormapOfScreen (XtScreen ((Widget) mw)); |
| 972 | XColor topc, botc; |
| 973 | int top_frobbed = 0, bottom_frobbed = 0; |
| 974 | |
| 975 | if (mw->menu.top_shadow_color == -1) |
| 976 | mw->menu.top_shadow_color = mw->core.background_pixel; |
| 977 | if (mw->menu.bottom_shadow_color == -1) |
| 978 | mw->menu.bottom_shadow_color = mw->menu.foreground; |
| 979 | |
| 980 | if (mw->menu.top_shadow_color == mw->core.background_pixel || |
| 981 | mw->menu.top_shadow_color == mw->menu.foreground) |
| 982 | { |
| 983 | topc.pixel = mw->core.background_pixel; |
| 984 | XQueryColor (dpy, cmap, &topc); |
| 985 | /* don't overflow/wrap! */ |
| 986 | topc.red = MINL (65535, topc.red * 1.2); |
| 987 | topc.green = MINL (65535, topc.green * 1.2); |
| 988 | topc.blue = MINL (65535, topc.blue * 1.2); |
| 989 | if (XAllocColor (dpy, cmap, &topc)) |
| 990 | { |
| 991 | mw->menu.top_shadow_color = topc.pixel; |
| 992 | top_frobbed = 1; |
| 993 | } |
| 994 | } |
| 995 | if (mw->menu.bottom_shadow_color == mw->menu.foreground || |
| 996 | mw->menu.bottom_shadow_color == mw->core.background_pixel) |
| 997 | { |
| 998 | botc.pixel = mw->core.background_pixel; |
| 999 | XQueryColor (dpy, cmap, &botc); |
| 1000 | botc.red *= 0.6; |
| 1001 | botc.green *= 0.6; |
| 1002 | botc.blue *= 0.6; |
| 1003 | if (XAllocColor (dpy, cmap, &botc)) |
| 1004 | { |
| 1005 | mw->menu.bottom_shadow_color = botc.pixel; |
| 1006 | bottom_frobbed = 1; |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | if (top_frobbed && bottom_frobbed) |
| 1011 | { |
| 1012 | int top_avg = ((topc.red / 3) + (topc.green / 3) + (topc.blue / 3)); |
| 1013 | int bot_avg = ((botc.red / 3) + (botc.green / 3) + (botc.blue / 3)); |
| 1014 | if (bot_avg > top_avg) |
| 1015 | { |
| 1016 | Pixel tmp = mw->menu.top_shadow_color; |
| 1017 | mw->menu.top_shadow_color = mw->menu.bottom_shadow_color; |
| 1018 | mw->menu.bottom_shadow_color = tmp; |
| 1019 | } |
| 1020 | else if (topc.pixel == botc.pixel) |
| 1021 | { |
| 1022 | if (botc.pixel == mw->menu.foreground) |
| 1023 | mw->menu.top_shadow_color = mw->core.background_pixel; |
| 1024 | else |
| 1025 | mw->menu.bottom_shadow_color = mw->menu.foreground; |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | if (!mw->menu.top_shadow_pixmap && |
| 1030 | mw->menu.top_shadow_color == mw->core.background_pixel) |
| 1031 | { |
| 1032 | mw->menu.top_shadow_pixmap = mw->menu.gray_pixmap; |
| 1033 | mw->menu.top_shadow_color = mw->menu.foreground; |
| 1034 | } |
| 1035 | if (!mw->menu.bottom_shadow_pixmap && |
| 1036 | mw->menu.bottom_shadow_color == mw->core.background_pixel) |
| 1037 | { |
| 1038 | mw->menu.bottom_shadow_pixmap = mw->menu.gray_pixmap; |
| 1039 | mw->menu.bottom_shadow_color = mw->menu.foreground; |
| 1040 | } |
| 1041 | |
| 1042 | xgcv.fill_style = FillStippled; |
| 1043 | xgcv.foreground = mw->menu.top_shadow_color; |
| 1044 | xgcv.stipple = mw->menu.top_shadow_pixmap; |
| 1045 | pm = (xgcv.stipple ? GCStipple|GCFillStyle : 0); |
| 1046 | mw->menu.shadow_top_gc = XtGetGC ((Widget)mw, GCForeground | pm, &xgcv); |
| 1047 | |
| 1048 | xgcv.foreground = mw->menu.bottom_shadow_color; |
| 1049 | xgcv.stipple = mw->menu.bottom_shadow_pixmap; |
| 1050 | pm = (xgcv.stipple ? GCStipple|GCFillStyle : 0); |
| 1051 | mw->menu.shadow_bottom_gc = XtGetGC ((Widget)mw, GCForeground | pm, &xgcv); |
| 1052 | } |
| 1053 | |
| 1054 | |
| 1055 | static void |
| 1056 | release_shadow_gcs (mw) |
| 1057 | XlwMenuWidget mw; |
| 1058 | { |
| 1059 | XtReleaseGC ((Widget) mw, mw->menu.shadow_top_gc); |
| 1060 | XtReleaseGC ((Widget) mw, mw->menu.shadow_bottom_gc); |
| 1061 | } |
| 1062 | |
| 1063 | static void |
| 1064 | XlwMenuInitialize (request, mw, args, num_args) |
| 1065 | Widget request; |
| 1066 | XlwMenuWidget mw; |
| 1067 | ArgList args; |
| 1068 | Cardinal *num_args; |
| 1069 | { |
| 1070 | /* Get the GCs and the widget size */ |
| 1071 | XSetWindowAttributes xswa; |
| 1072 | int mask; |
| 1073 | |
| 1074 | Window window = RootWindowOfScreen (DefaultScreenOfDisplay (XtDisplay (mw))); |
| 1075 | Display* display = XtDisplay (mw); |
| 1076 | |
| 1077 | #if 0 |
| 1078 | widget_value *tem = (widget_value *) XtMalloc (sizeof (widget_value)); |
| 1079 | |
| 1080 | /* _XtCreate is freeing the object that was passed to us, |
| 1081 | so make a copy that we will actually keep. */ |
| 1082 | lwlib_bcopy (mw->menu.contents, tem, sizeof (widget_value)); |
| 1083 | mw->menu.contents = tem; |
| 1084 | #endif |
| 1085 | |
| 1086 | /* mw->menu.cursor = XCreateFontCursor (display, mw->menu.cursor_shape); */ |
| 1087 | mw->menu.cursor = mw->menu.cursor_shape; |
| 1088 | |
| 1089 | mw->menu.gray_pixmap = XCreatePixmapFromBitmapData (display, window, |
| 1090 | gray_bits, gray_width, |
| 1091 | gray_height, 1, 0, 1); |
| 1092 | |
| 1093 | /* I don't understand why this ends up 0 sometimes, |
| 1094 | but it does. This kludge works around it. |
| 1095 | Can anyone find a real fix? -- rms. */ |
| 1096 | if (mw->menu.font == 0) |
| 1097 | mw->menu.font = xlwmenu_default_font; |
| 1098 | |
| 1099 | make_drawing_gcs (mw); |
| 1100 | make_shadow_gcs (mw); |
| 1101 | |
| 1102 | xswa.background_pixel = mw->core.background_pixel; |
| 1103 | xswa.border_pixel = mw->core.border_pixel; |
| 1104 | mask = CWBackPixel | CWBorderPixel; |
| 1105 | |
| 1106 | mw->menu.popped_up = False; |
| 1107 | |
| 1108 | mw->menu.old_depth = 1; |
| 1109 | mw->menu.old_stack = (widget_value**)XtMalloc (sizeof (widget_value*)); |
| 1110 | mw->menu.old_stack_length = 1; |
| 1111 | mw->menu.old_stack [0] = mw->menu.contents; |
| 1112 | |
| 1113 | mw->menu.new_depth = 0; |
| 1114 | mw->menu.new_stack = 0; |
| 1115 | mw->menu.new_stack_length = 0; |
| 1116 | push_new_stack (mw, mw->menu.contents); |
| 1117 | |
| 1118 | mw->menu.windows = (window_state*)XtMalloc (sizeof (window_state)); |
| 1119 | mw->menu.windows_length = 1; |
| 1120 | mw->menu.windows [0].x = 0; |
| 1121 | mw->menu.windows [0].y = 0; |
| 1122 | mw->menu.windows [0].width = 0; |
| 1123 | mw->menu.windows [0].height = 0; |
| 1124 | size_menu (mw, 0); |
| 1125 | |
| 1126 | mw->core.width = mw->menu.windows [0].width; |
| 1127 | mw->core.height = mw->menu.windows [0].height; |
| 1128 | } |
| 1129 | |
| 1130 | static void |
| 1131 | XlwMenuClassInitialize () |
| 1132 | { |
| 1133 | } |
| 1134 | |
| 1135 | static void |
| 1136 | XlwMenuRealize (w, valueMask, attributes) |
| 1137 | Widget w; |
| 1138 | Mask *valueMask; |
| 1139 | XSetWindowAttributes *attributes; |
| 1140 | { |
| 1141 | XlwMenuWidget mw = (XlwMenuWidget)w; |
| 1142 | XSetWindowAttributes xswa; |
| 1143 | int mask; |
| 1144 | |
| 1145 | (*xlwMenuWidgetClass->core_class.superclass->core_class.realize) |
| 1146 | (w, valueMask, attributes); |
| 1147 | |
| 1148 | xswa.save_under = True; |
| 1149 | xswa.cursor = mw->menu.cursor_shape; |
| 1150 | mask = CWSaveUnder | CWCursor; |
| 1151 | XChangeWindowAttributes (XtDisplay (w), XtWindow (w), mask, &xswa); |
| 1152 | |
| 1153 | mw->menu.windows [0].window = XtWindow (w); |
| 1154 | mw->menu.windows [0].x = w->core.x; |
| 1155 | mw->menu.windows [0].y = w->core.y; |
| 1156 | mw->menu.windows [0].width = w->core.width; |
| 1157 | mw->menu.windows [0].height = w->core.height; |
| 1158 | } |
| 1159 | |
| 1160 | /* Only the toplevel menubar/popup is a widget so it's the only one that |
| 1161 | receives expose events through Xt. So we repaint all the other panes |
| 1162 | when receiving an Expose event. */ |
| 1163 | static void |
| 1164 | XlwMenuRedisplay (w, ev, region) |
| 1165 | Widget w; |
| 1166 | XEvent* ev; |
| 1167 | Region region; |
| 1168 | { |
| 1169 | XlwMenuWidget mw = (XlwMenuWidget)w; |
| 1170 | int i; |
| 1171 | |
| 1172 | /* If we have a depth beyond 1, it's because a submenu was displayed. |
| 1173 | If the submenu has been destroyed, set the depth back to 1. */ |
| 1174 | if (submenu_destroyed) |
| 1175 | { |
| 1176 | mw->menu.old_depth = 1; |
| 1177 | submenu_destroyed = 0; |
| 1178 | } |
| 1179 | |
| 1180 | for (i = 0; i < mw->menu.old_depth; i++) |
| 1181 | display_menu (mw, i, False, NULL, NULL, NULL, NULL, NULL); |
| 1182 | } |
| 1183 | |
| 1184 | static void |
| 1185 | XlwMenuDestroy (w) |
| 1186 | Widget w; |
| 1187 | { |
| 1188 | int i; |
| 1189 | XlwMenuWidget mw = (XlwMenuWidget) w; |
| 1190 | |
| 1191 | if (pointer_grabbed) |
| 1192 | XtUngrabPointer ((Widget)w, CurrentTime); |
| 1193 | pointer_grabbed = 0; |
| 1194 | |
| 1195 | submenu_destroyed = 1; |
| 1196 | |
| 1197 | release_drawing_gcs (mw); |
| 1198 | release_shadow_gcs (mw); |
| 1199 | |
| 1200 | /* this doesn't come from the resource db but is created explicitly |
| 1201 | so we must free it ourselves. */ |
| 1202 | XFreePixmap (XtDisplay (mw), mw->menu.gray_pixmap); |
| 1203 | mw->menu.gray_pixmap = (Pixmap) -1; |
| 1204 | |
| 1205 | #if 0 |
| 1206 | /* Do free mw->menu.contents because nowadays we copy it |
| 1207 | during initialization. */ |
| 1208 | XtFree (mw->menu.contents); |
| 1209 | #endif |
| 1210 | |
| 1211 | /* Don't free mw->menu.contents because that comes from our creator. |
| 1212 | The `*_stack' elements are just pointers into `contents' so leave |
| 1213 | that alone too. But free the stacks themselves. */ |
| 1214 | if (mw->menu.old_stack) XtFree ((char *) mw->menu.old_stack); |
| 1215 | if (mw->menu.new_stack) XtFree ((char *) mw->menu.new_stack); |
| 1216 | |
| 1217 | /* Remember, you can't free anything that came from the resource |
| 1218 | database. This includes: |
| 1219 | mw->menu.cursor |
| 1220 | mw->menu.top_shadow_pixmap |
| 1221 | mw->menu.bottom_shadow_pixmap |
| 1222 | mw->menu.font |
| 1223 | Also the color cells of top_shadow_color, bottom_shadow_color, |
| 1224 | foreground, and button_foreground will never be freed until this |
| 1225 | client exits. Nice, eh? |
| 1226 | */ |
| 1227 | |
| 1228 | /* start from 1 because the one in slot 0 is w->core.window */ |
| 1229 | for (i = 1; i < mw->menu.windows_length; i++) |
| 1230 | XDestroyWindow (XtDisplay (mw), mw->menu.windows [i].window); |
| 1231 | if (mw->menu.windows) |
| 1232 | XtFree ((char *) mw->menu.windows); |
| 1233 | } |
| 1234 | |
| 1235 | static Boolean |
| 1236 | XlwMenuSetValues (current, request, new) |
| 1237 | Widget current; |
| 1238 | Widget request; |
| 1239 | Widget new; |
| 1240 | { |
| 1241 | XlwMenuWidget oldmw = (XlwMenuWidget)current; |
| 1242 | XlwMenuWidget newmw = (XlwMenuWidget)new; |
| 1243 | Boolean redisplay = False; |
| 1244 | int i; |
| 1245 | |
| 1246 | if (newmw->menu.contents |
| 1247 | && newmw->menu.contents->contents |
| 1248 | && newmw->menu.contents->contents->change >= VISIBLE_CHANGE) |
| 1249 | redisplay = True; |
| 1250 | |
| 1251 | if (newmw->core.background_pixel != oldmw->core.background_pixel |
| 1252 | || newmw->menu.foreground != oldmw->menu.foreground |
| 1253 | || newmw->menu.font != oldmw->menu.font) |
| 1254 | { |
| 1255 | release_drawing_gcs (newmw); |
| 1256 | make_drawing_gcs (newmw); |
| 1257 | redisplay = True; |
| 1258 | |
| 1259 | for (i = 0; i < oldmw->menu.windows_length; i++) |
| 1260 | { |
| 1261 | XSetWindowBackground (XtDisplay (oldmw), |
| 1262 | oldmw->menu.windows [i].window, |
| 1263 | newmw->core.background_pixel); |
| 1264 | /* clear windows and generate expose events */ |
| 1265 | XClearArea (XtDisplay (oldmw), oldmw->menu.windows[i].window, |
| 1266 | 0, 0, 0, 0, True); |
| 1267 | } |
| 1268 | } |
| 1269 | |
| 1270 | return redisplay; |
| 1271 | } |
| 1272 | |
| 1273 | static void |
| 1274 | XlwMenuResize (w) |
| 1275 | Widget w; |
| 1276 | { |
| 1277 | XlwMenuWidget mw = (XlwMenuWidget)w; |
| 1278 | |
| 1279 | if (mw->menu.popped_up) |
| 1280 | { |
| 1281 | /* Don't allow the popup menu to resize itself. */ |
| 1282 | mw->core.width = mw->menu.windows [0].width; |
| 1283 | mw->core.height = mw->menu.windows [0].height; |
| 1284 | mw->core.parent->core.width = mw->core.width ; |
| 1285 | mw->core.parent->core.height = mw->core.height ; |
| 1286 | } |
| 1287 | else |
| 1288 | { |
| 1289 | mw->menu.windows [0].width = mw->core.width; |
| 1290 | mw->menu.windows [0].height = mw->core.height; |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | \f/* Action procedures */ |
| 1295 | static void |
| 1296 | handle_single_motion_event (mw, ev) |
| 1297 | XlwMenuWidget mw; |
| 1298 | XMotionEvent* ev; |
| 1299 | { |
| 1300 | widget_value* val; |
| 1301 | int level; |
| 1302 | |
| 1303 | if (!map_event_to_widget_value (mw, ev, &val, &level)) |
| 1304 | pop_new_stack_if_no_contents (mw); |
| 1305 | else |
| 1306 | set_new_state (mw, val, level); |
| 1307 | remap_menubar (mw); |
| 1308 | |
| 1309 | /* Sync with the display. Makes it feel better on X terms. */ |
| 1310 | XSync (XtDisplay (mw), False); |
| 1311 | } |
| 1312 | |
| 1313 | static void |
| 1314 | handle_motion_event (mw, ev) |
| 1315 | XlwMenuWidget mw; |
| 1316 | XMotionEvent* ev; |
| 1317 | { |
| 1318 | int x = ev->x_root; |
| 1319 | int y = ev->y_root; |
| 1320 | int state = ev->state; |
| 1321 | |
| 1322 | handle_single_motion_event (mw, ev); |
| 1323 | |
| 1324 | /* allow motion events to be generated again */ |
| 1325 | if (ev->is_hint |
| 1326 | && XQueryPointer (XtDisplay (mw), ev->window, |
| 1327 | &ev->root, &ev->subwindow, |
| 1328 | &ev->x_root, &ev->y_root, |
| 1329 | &ev->x, &ev->y, |
| 1330 | &ev->state) |
| 1331 | && ev->state == state |
| 1332 | && (ev->x_root != x || ev->y_root != y)) |
| 1333 | handle_single_motion_event (mw, ev); |
| 1334 | } |
| 1335 | |
| 1336 | static void |
| 1337 | Start (w, ev, params, num_params) |
| 1338 | Widget w; |
| 1339 | XEvent *ev; |
| 1340 | String *params; |
| 1341 | Cardinal *num_params; |
| 1342 | { |
| 1343 | XlwMenuWidget mw = (XlwMenuWidget)w; |
| 1344 | |
| 1345 | if (!mw->menu.popped_up) |
| 1346 | { |
| 1347 | menu_post_event = *ev; |
| 1348 | pop_up_menu (mw, ev); |
| 1349 | } |
| 1350 | else |
| 1351 | { |
| 1352 | /* If we push a button while the menu is posted semipermanently, |
| 1353 | releasing the button should always pop the menu down. */ |
| 1354 | next_release_must_exit = 1; |
| 1355 | |
| 1356 | /* notes the absolute position of the menubar window */ |
| 1357 | mw->menu.windows [0].x = ev->xmotion.x_root - ev->xmotion.x; |
| 1358 | mw->menu.windows [0].y = ev->xmotion.y_root - ev->xmotion.y; |
| 1359 | |
| 1360 | /* handles the down like a move, slots are compatible */ |
| 1361 | handle_motion_event (mw, &ev->xmotion); |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | static void |
| 1366 | Drag (w, ev, params, num_params) |
| 1367 | Widget w; |
| 1368 | XEvent *ev; |
| 1369 | String *params; |
| 1370 | Cardinal *num_params; |
| 1371 | { |
| 1372 | XlwMenuWidget mw = (XlwMenuWidget)w; |
| 1373 | handle_motion_event (mw, &ev->xmotion); |
| 1374 | } |
| 1375 | |
| 1376 | static void |
| 1377 | Select (w, ev, params, num_params) |
| 1378 | Widget w; |
| 1379 | XEvent *ev; |
| 1380 | String *params; |
| 1381 | Cardinal *num_params; |
| 1382 | { |
| 1383 | XlwMenuWidget mw = (XlwMenuWidget)w; |
| 1384 | widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1]; |
| 1385 | |
| 1386 | /* If user releases the button quickly, without selecting anything, |
| 1387 | after the initial down-click that brought the menu up, |
| 1388 | do nothing. */ |
| 1389 | if ((selected_item == 0 |
| 1390 | || ((widget_value *) selected_item)->call_data == 0) |
| 1391 | && !next_release_must_exit |
| 1392 | && (ev->xbutton.time - menu_post_event.xbutton.time |
| 1393 | < XtGetMultiClickTime (XtDisplay (w)))) |
| 1394 | return; |
| 1395 | |
| 1396 | /* pop down everything. */ |
| 1397 | mw->menu.new_depth = 1; |
| 1398 | remap_menubar (mw); |
| 1399 | |
| 1400 | if (mw->menu.popped_up) |
| 1401 | { |
| 1402 | mw->menu.popped_up = False; |
| 1403 | XtUngrabPointer ((Widget)mw, ev->xmotion.time); |
| 1404 | if (XtIsShell (XtParent ((Widget) mw))) |
| 1405 | XtPopdown (XtParent ((Widget) mw)); |
| 1406 | else |
| 1407 | { |
| 1408 | XtRemoveGrab ((Widget) mw); |
| 1409 | display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL); |
| 1410 | } |
| 1411 | } |
| 1412 | |
| 1413 | /* callback */ |
| 1414 | XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)selected_item); |
| 1415 | } |
| 1416 | |
| 1417 | |
| 1418 | \f/* Special code to pop-up a menu */ |
| 1419 | void |
| 1420 | pop_up_menu (mw, event) |
| 1421 | XlwMenuWidget mw; |
| 1422 | XButtonPressedEvent* event; |
| 1423 | { |
| 1424 | int x = event->x_root; |
| 1425 | int y = event->y_root; |
| 1426 | int w; |
| 1427 | int h; |
| 1428 | int borderwidth = mw->menu.shadow_thickness; |
| 1429 | Screen* screen = XtScreen (mw); |
| 1430 | Display *display = XtDisplay (mw); |
| 1431 | |
| 1432 | next_release_must_exit = 0; |
| 1433 | |
| 1434 | XtCallCallbackList ((Widget)mw, mw->menu.open, NULL); |
| 1435 | |
| 1436 | if (XtIsShell (XtParent ((Widget)mw))) |
| 1437 | size_menu (mw, 0); |
| 1438 | |
| 1439 | w = mw->menu.windows [0].width; |
| 1440 | h = mw->menu.windows [0].height; |
| 1441 | |
| 1442 | x -= borderwidth; |
| 1443 | y -= borderwidth; |
| 1444 | if (x < borderwidth) |
| 1445 | x = borderwidth; |
| 1446 | if (x + w + 2 * borderwidth > WidthOfScreen (screen)) |
| 1447 | x = WidthOfScreen (screen) - w - 2 * borderwidth; |
| 1448 | if (y < borderwidth) |
| 1449 | y = borderwidth; |
| 1450 | if (y + h + 2 * borderwidth> HeightOfScreen (screen)) |
| 1451 | y = HeightOfScreen (screen) - h - 2 * borderwidth; |
| 1452 | |
| 1453 | mw->menu.popped_up = True; |
| 1454 | if (XtIsShell (XtParent ((Widget)mw))) |
| 1455 | { |
| 1456 | XtConfigureWidget (XtParent ((Widget)mw), x, y, w, h, |
| 1457 | XtParent ((Widget)mw)->core.border_width); |
| 1458 | XtPopup (XtParent ((Widget)mw), XtGrabExclusive); |
| 1459 | display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL); |
| 1460 | mw->menu.windows [0].x = x + borderwidth; |
| 1461 | mw->menu.windows [0].y = y + borderwidth; |
| 1462 | } |
| 1463 | else |
| 1464 | { |
| 1465 | XEvent *ev = (XEvent *) event; |
| 1466 | |
| 1467 | XtAddGrab ((Widget) mw, True, True); |
| 1468 | |
| 1469 | /* notes the absolute position of the menubar window */ |
| 1470 | mw->menu.windows [0].x = ev->xmotion.x_root - ev->xmotion.x; |
| 1471 | mw->menu.windows [0].y = ev->xmotion.y_root - ev->xmotion.y; |
| 1472 | } |
| 1473 | |
| 1474 | #ifdef emacs |
| 1475 | x_catch_errors (display); |
| 1476 | #endif |
| 1477 | XtGrabPointer ((Widget)mw, False, |
| 1478 | (PointerMotionMask |
| 1479 | | PointerMotionHintMask |
| 1480 | | ButtonReleaseMask |
| 1481 | | ButtonPressMask), |
| 1482 | GrabModeAsync, GrabModeAsync, None, |
| 1483 | mw->menu.cursor_shape, |
| 1484 | event->time); |
| 1485 | pointer_grabbed = 1; |
| 1486 | #ifdef emacs |
| 1487 | if (x_had_errors_p (display)) |
| 1488 | { |
| 1489 | pointer_grabbed = 0; |
| 1490 | XtUngrabPointer ((Widget)mw, event->time); |
| 1491 | } |
| 1492 | x_uncatch_errors (display); |
| 1493 | #endif |
| 1494 | |
| 1495 | handle_motion_event (mw, (XMotionEvent*)event); |
| 1496 | } |