1/* The lwlib interface to "xlwmenu" menus. 2 Copyright (C) 1992 Lucid, Inc. 3 Copyright (C) 1994, 2000, 2001, 2002, 2003, 2004, 4 2005, 2006, 2007 Free Software Foundation, Inc. 5 6This file is part of the Lucid Widget Library. 7 8The Lucid Widget Library is free software; you can redistribute it and/or 9modify it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 1, or (at your option) 11any later version. 12 13The Lucid Widget Library is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GNU Emacs; see the file COPYING. If not, write to 20the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21Boston, MA 02110-1301, USA. */ 22 23#ifdef HAVE_CONFIG_H 24#include <config.h> 25#endif 26 27#include "lisp.h" 28 29#include "lwlib-Xlw.h" 30#include <X11/StringDefs.h> 31#include <X11/IntrinsicP.h> 32#include <X11/ObjectP.h> 33#include <X11/CompositeP.h> 34#include <X11/Shell.h> 35#include "xlwmenu.h" 36 37#if 0 38 39#include <stdio.h> 40 41/* Print the complete X resource name of widget WIDGET to stderr. 42 This is sometimes handy to have available. */ 43 44void 45x_print_complete_resource_name (widget) 46 Widget widget; 47{ 48 int i; 49 String names[100]; 50 51 for (i = 0; i < 100 && widget != NULL; ++i) 52 { 53 names[i] = XtName (widget); 54 widget = XtParent (widget); 55 } 56 57 for (--i; i >= 1; --i) 58 fprintf (stderr, "%s.", names[i]); 59 fprintf (stderr, "%s\n", names[0]); 60} 61 62#endif /* 0 */ 63 64 65/* Menu callbacks */ 66 67/* Callback XtNhighlightCallback for Lucid menus. W is the menu 68 widget, CLIENT_DATA contains a pointer to the widget_instance 69 for the menu, CALL_DATA contains a pointer to the widget_value 70 structure for the highlighted menu item. The latter may be null 71 if there isn't any highlighted menu item. */ 72 73static void 74highlight_hook (w, client_data, call_data) 75 Widget w; 76 XtPointer client_data; 77 XtPointer call_data; 78{ 79 widget_instance *instance = (widget_instance *) client_data; 80 81 if (instance->info->highlight_cb 82 && !w->core.being_destroyed) 83 instance->info->highlight_cb (w, instance->info->id, call_data); 84} 85 86static void 87enter_hook (w, client_data, call_data) 88 Widget w; 89 XtPointer client_data; 90 XtPointer call_data; 91{ 92 highlight_hook (w, client_data, call_data); 93} 94 95static void 96leave_hook (w, client_data, call_data) 97 Widget w; 98 XtPointer client_data; 99 XtPointer call_data; 100{ 101 highlight_hook (w, client_data, NULL); 102} 103 104 105static void 106pre_hook (w, client_data, call_data) 107 Widget w; 108 XtPointer client_data; 109 XtPointer call_data; 110{ 111 widget_instance* instance = (widget_instance*)client_data; 112 widget_value* val; 113 114 if (w->core.being_destroyed) 115 return; 116 117 val = lw_get_widget_value_for_widget (instance, w); 118 if (instance->info->pre_activate_cb) 119 instance->info->pre_activate_cb (w, instance->info->id, 120 val ? val->call_data : NULL); 121} 122 123static void 124pick_hook (w, client_data, call_data) 125 Widget w; 126 XtPointer client_data; 127 XtPointer call_data; 128{ 129 widget_instance* instance = (widget_instance*)client_data; 130 widget_value* contents_val = (widget_value*)call_data; 131 widget_value* widget_val; 132 XtPointer widget_arg; 133 134 if (w->core.being_destroyed) 135 return; 136 137 if (instance->info->selection_cb && contents_val && contents_val->enabled 138 && !contents_val->contents) 139 instance->info->selection_cb (w, instance->info->id, 140 contents_val->call_data); 141 142 widget_val = lw_get_widget_value_for_widget (instance, w); 143 widget_arg = widget_val ? widget_val->call_data : NULL; 144 if (instance->info->post_activate_cb) 145 instance->info->post_activate_cb (w, instance->info->id, widget_arg); 146 147} 148 149/* creation functions */ 150 151static Widget 152xlw_create_menubar (instance) 153 widget_instance* instance; 154{ 155 Widget widget; 156 Arg al[5]; 157 int ac = 0; 158 159 XtSetArg (al[ac], XtNmenu, instance->info->val); ac++; 160#ifdef emacs 161 XtSetArg (al[ac], XtNshowGrip, 0); ac++; 162 XtSetArg (al[ac], XtNresizeToPreferred, 1); ac++; 163 XtSetArg (al[ac], XtNallowResize, 1); ac++; 164#endif 165 166 /* This used to use XtVaCreateWidget, but an old Xt version 167 has a bug in XtVaCreateWidget that frees instance->info->name. */ 168 widget 169 = XtCreateWidget (instance->info->name, xlwMenuWidgetClass, 170 instance->parent, al, ac); 171 172 XtAddCallback (widget, XtNopen, pre_hook, (XtPointer)instance); 173 XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance); 174 XtAddCallback (widget, XtNleaveCallback, leave_hook, (XtPointer)instance); 175 XtAddCallback (widget, XtNenterCallback, enter_hook, (XtPointer)instance); 176 return widget; 177} 178 179static Widget 180xlw_create_popup_menu (instance) 181 widget_instance* instance; 182{ 183 Widget popup_shell 184 = XtCreatePopupShell (instance->info->name, overrideShellWidgetClass, 185 instance->parent, NULL, 0); 186 187 Widget widget; 188 Arg al[2]; 189 int ac = 0; 190 191 XtSetArg (al[ac], XtNmenu, instance->info->val); ac++; 192 XtSetArg (al[ac], XtNhorizontal, False); ac++; 193 194 /* This used to use XtVaManagedCreateWidget, but an old Xt version 195 has a bug in XtVaManagedCreateWidget that frees instance->info->name. */ 196 widget 197 = XtCreateManagedWidget ("popup", xlwMenuWidgetClass, 198 popup_shell, al, ac); 199 200 XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance); 201 XtAddCallback (widget, XtNleaveCallback, leave_hook, (XtPointer)instance); 202 XtAddCallback (widget, XtNenterCallback, enter_hook, (XtPointer)instance); 203 204 return popup_shell; 205} 206 207widget_creation_entry 208xlw_creation_table [] = 209{ 210 {"menubar", xlw_create_menubar}, 211 {"popup", xlw_create_popup_menu}, 212 {NULL, NULL} 213}; 214 215Boolean 216lw_lucid_widget_p (widget) 217 Widget widget; 218{ 219 WidgetClass the_class = XtClass (widget); 220 221 if (the_class == xlwMenuWidgetClass) 222 return True; 223 if (the_class == overrideShellWidgetClass) 224 return (XtClass (((CompositeWidget)widget)->composite.children [0]) 225 == xlwMenuWidgetClass); 226 return False; 227} 228 229void 230#ifdef PROTOTYPES 231xlw_update_one_widget (widget_instance* instance, Widget widget, 232 widget_value* val, Boolean deep_p) 233#else 234xlw_update_one_widget (instance, widget, val, deep_p) 235 widget_instance* instance; 236 Widget widget; 237 widget_value* val; 238 Boolean deep_p; 239#endif 240{ 241 Arg al[1]; 242 243 /* This used to use XtVaSetValues, but some old Xt versions 244 that have a bug in XtVaCreateWidget might have it here too. */ 245 XtSetArg (al[0], XtNmenu, instance->info->val); 246 247 XtSetValues (widget, al, 1); 248} 249 250void 251xlw_update_one_value (instance, widget, val) 252 widget_instance* instance; 253 Widget widget; 254 widget_value* val; 255{ 256 return; 257} 258 259void 260#ifdef PROTOTYPES 261xlw_pop_instance (widget_instance* instance, Boolean up) 262#else 263xlw_pop_instance (instance, up) 264 widget_instance* instance; 265 Boolean up; 266#endif 267{ 268} 269 270void 271xlw_popup_menu (widget, event) 272 Widget widget; 273 XEvent *event; 274{ 275 XlwMenuWidget mw; 276 277 if (!XtIsShell (widget)) 278 return; 279 280 mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0]; 281 282 if (event) 283 XtCallActionProc ((Widget) mw, "start", event, NULL, 0); 284 else 285 { 286 XEvent dummy; 287 XButtonPressedEvent *bd = &dummy.xbutton; 288 289 bd->type = ButtonPress; 290 bd->serial = 0; 291 bd->send_event = 0; 292 bd->display = XtDisplay (widget); 293 bd->window = XtWindow (XtParent (widget)); 294 bd->time = CurrentTime; 295 bd->button = 0; 296 XQueryPointer (bd->display, bd->window, &bd->root, 297 &bd->subwindow, &bd->x_root, &bd->y_root, 298 &bd->x, &bd->y, &bd->state); 299 300 XtCallActionProc ((Widget) mw, "start", &dummy, NULL, 0); 301 } 302} 303 304/* Destruction of instances */ 305void 306xlw_destroy_instance (instance) 307 widget_instance* instance; 308{ 309 if (instance->widget) 310 XtDestroyWidget (instance->widget); 311} 312 313/* arch-tag: 541e3912-477d-406e-9bf2-dbf2b7ff8c3b 314 (do not change this comment) */ 315