| 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, 2008, 2009 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of the Lucid Widget Library. |
| 7 | |
| 8 | The Lucid Widget Library is free software; you can redistribute it and/or |
| 9 | modify it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 1, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | The Lucid Widget Library is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs; see the file COPYING. If not, write to |
| 20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 21 | Boston, 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 | |
| 44 | void |
| 45 | x_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 | \f/* 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 | |
| 73 | static void |
| 74 | highlight_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 | |
| 86 | static void |
| 87 | enter_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 | |
| 95 | static void |
| 96 | leave_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 | |
| 105 | static void |
| 106 | pre_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 | |
| 123 | static void |
| 124 | pick_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 | \f/* creation functions */ |
| 150 | |
| 151 | static Widget |
| 152 | xlw_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 | |
| 179 | static Widget |
| 180 | xlw_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 | |
| 207 | widget_creation_entry |
| 208 | xlw_creation_table [] = |
| 209 | { |
| 210 | {"menubar", xlw_create_menubar}, |
| 211 | {"popup", xlw_create_popup_menu}, |
| 212 | {NULL, NULL} |
| 213 | }; |
| 214 | |
| 215 | Boolean |
| 216 | lw_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 | |
| 229 | void |
| 230 | #ifdef PROTOTYPES |
| 231 | xlw_update_one_widget (widget_instance* instance, Widget widget, |
| 232 | widget_value* val, Boolean deep_p) |
| 233 | #else |
| 234 | xlw_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 | |
| 250 | void |
| 251 | xlw_update_one_value (instance, widget, val) |
| 252 | widget_instance* instance; |
| 253 | Widget widget; |
| 254 | widget_value* val; |
| 255 | { |
| 256 | return; |
| 257 | } |
| 258 | |
| 259 | void |
| 260 | #ifdef PROTOTYPES |
| 261 | xlw_pop_instance (widget_instance* instance, Boolean up) |
| 262 | #else |
| 263 | xlw_pop_instance (instance, up) |
| 264 | widget_instance* instance; |
| 265 | Boolean up; |
| 266 | #endif |
| 267 | { |
| 268 | } |
| 269 | |
| 270 | void |
| 271 | xlw_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 | \f/* Destruction of instances */ |
| 305 | void |
| 306 | xlw_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) */ |