plugins/mouse/mouse.c

   1 #include "kernel/openbox.h"
   2 #include "kernel/dispatch.h"
   3 #include "kernel/action.h"
   4 #include "kernel/event.h"
   5 #include "kernel/client.h"
   6 #include "kernel/prop.h"
   7 #include "kernel/grab.h"
   8 #include "kernel/frame.h"
   9 #include "parser/parse.h"
  10 #include "translate.h"
  11 #include "mouse.h"
  12 #include <glib.h>
  13
  14 static int threshold;
  15 static int dclicktime;
  16 /*
  17
  18 <context name="Titlebar">
  19   <mousebind button="Left" action="Press">
  20     <action name="Raise"></action>
  21   </mousebind>
  22 </context>
  23
  24 */
  25
  26 static void parse_xml(xmlDocPtr doc, xmlNodePtr node, void *d)
  27 {
  28     xmlNodePtr n, nbut, nact;
  29     char *buttonstr;
  30     char *contextstr;
  31     MouseAction mact;
  32     Action *action;
  33
  34     node = node->xmlChildrenNode;
  35
  36     if ((n = parse_find_node("dragThreshold", node)))
  37         threshold = parse_int(doc, n);
  38     if ((n = parse_find_node("doubleClickTime", node)))
  39         dclicktime = parse_int(doc, n);
  40
  41     n = parse_find_node("context", node);
  42     while (n) {
  43         if (!parse_attr_string("name", n, &contextstr))
  44             goto next_n;
  45         nbut = parse_find_node("mousebind", n->xmlChildrenNode);
  46         while (nbut) {
  47             if (!parse_attr_string("button", nbut, &buttonstr))
  48                 goto next_nbut;
  49             if (parse_attr_contains("press", nbut, "action"))
  50                 mact = MouseAction_Press;
  51             else if (parse_attr_contains("release", nbut, "action"))
  52                 mact = MouseAction_Release;
  53             else if (parse_attr_contains("click", nbut, "action"))
  54                 mact = MouseAction_Click;
  55             else if (parse_attr_contains("doubleclick", nbut,"action"))
  56                 mact = MouseAction_DClick;
  57             else if (parse_attr_contains("drag", nbut, "action"))
  58                 mact = MouseAction_Motion;
  59             else
  60                 goto next_nbut;
  61             nact = parse_find_node("action", nbut->xmlChildrenNode);
  62             while (nact) {
  63                 if ((action = action_parse(doc, nact))) {
  64                     /* validate that its okay for a mouse binding*/
  65                     if (mact == MouseAction_Motion) {
  66                         if (action->func != action_moveresize ||
  67                             action->data.moveresize.corner ==
  68                             prop_atoms.net_wm_moveresize_move_keyboard ||
  69                             action->data.moveresize.corner ==
  70                             prop_atoms.net_wm_moveresize_size_keyboard) {
  71                             action_free(action);
  72                             action = NULL;
  73                         }
  74                     } else {
  75                         if (action->func == action_moveresize &&
  76                             action->data.moveresize.corner !=
  77                             prop_atoms.net_wm_moveresize_move_keyboard &&
  78                             action->data.moveresize.corner !=
  79                             prop_atoms.net_wm_moveresize_size_keyboard) {
  80                             action_free(action);
  81                             action = NULL;
  82                         }
  83                     }
  84                     if (action)
  85                         mbind(buttonstr, contextstr, mact, action);
  86                 }
  87                 nact = parse_find_node("action", nact->next);
  88             }
  89             g_free(buttonstr);
  90         next_nbut:
  91             nbut = parse_find_node("mousebind", nbut->next);
  92         }
  93         g_free(contextstr);
  94     next_n:
  95         n = parse_find_node("context", n->next);
  96     }
  97 }
  98
  99 void plugin_setup_config()
 100 {
 101     threshold = 3;
 102     dclicktime = 200;
 103     parse_register("mouse", parse_xml, NULL);
 104 }
 105
 106 /* Array of GSList*s of PointerBinding*s. */
 107 static GSList *bound_contexts[OB_FRAME_NUM_CONTEXTS];
 108
 109 static void grab_for_client(ObClient *client, gboolean grab)
 110 {
 111     int i;
 112     GSList *it;
 113
 114     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
 115         for (it = bound_contexts[i]; it != NULL; it = it->next) {
 116             /* grab/ungrab the button */
 117             MouseBinding *b = it->data;
 118             Window win;
 119             int mode;
 120             unsigned int mask;
 121
 122             if (i == OB_FRAME_CONTEXT_FRAME) {
 123                 win = client->frame->window;
 124                 mode = GrabModeAsync;
 125                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 126             } else if (i == OB_FRAME_CONTEXT_CLIENT) {
 127                 win = client->frame->plate;
 128                 mode = GrabModeSync; /* this is handled in event */
 129                 mask = ButtonPressMask; /* can't catch more than this with Sync
 130                                            mode the release event is
 131                                            manufactured in event() */
 132             } else continue;
 133
 134             if (grab)
 135                 grab_button_full(b->button, b->state, win, mask, mode, None);
 136             else
 137                 ungrab_button(b->button, b->state, win);
 138         }
 139 }
 140
 141 static void grab_all_clients(gboolean grab)
 142 {
 143     GList *it;
 144
 145     for (it = client_list; it != NULL; it = it->next)
 146         grab_for_client(it->data, grab);
 147 }
 148
 149 static void clearall()
 150 {
 151     int i;
 152     GSList *it;
 153
 154     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
 155         for (it = bound_contexts[i]; it != NULL; it = it->next) {
 156             int j;
 157
 158             MouseBinding *b = it->data;
 159             for (j = 0; j < NUM_MOUSEACTION; ++j) {
 160                 GSList *it;
 161                 for (it = b->actions[j]; it; it = it->next) {
 162                     action_free(it->data);
 163                 }
 164                 g_slist_free(b->actions[j]);
 165             }
 166             g_free(b);
 167         }
 168         g_slist_free(bound_contexts[i]);
 169     }
 170 }
 171
 172 static void fire_button(MouseAction a, ObFrameContext context,
 173                         ObClient *c, guint state,
 174                         guint button, int x, int y)
 175 {
 176     GSList *it;
 177     MouseBinding *b;
 178
 179     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 180         b = it->data;
 181         if (b->state == state && b->button == button)
 182             break;
 183     }
 184     /* if not bound, then nothing to do! */
 185     if (it == NULL) return;
 186
 187     for (it = b->actions[a]; it; it = it->next) {
 188         Action *act = it->data;
 189         if (act->func != NULL) {
 190             act->data.any.c = c;
 191
 192             g_assert(act->func != action_moveresize);
 193
 194             if (act->func == action_showmenu) {
 195                 act->data.showmenu.x = x;
 196                 act->data.showmenu.y = y;
 197             }
 198
 199             act->func(&act->data);
 200         }
 201     }
 202 }
 203
 204 static void fire_motion(MouseAction a, ObFrameContext context, ObClient *c,
 205                         guint state, guint button, int x_root, int y_root,
 206                         guint32 corner)
 207 {
 208     GSList *it;
 209     MouseBinding *b;
 210
 211     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 212         b = it->data;
 213         if (b->state == state && b->button == button)
 214                 break;
 215     }
 216     /* if not bound, then nothing to do! */
 217     if (it == NULL) return;
 218
 219     for (it = b->actions[a]; it; it = it->next) {
 220         Action *act = it->data;
 221         if (act->func != NULL) {
 222             act->data.any.c = c;
 223
 224             if (act->func == action_moveresize) {
 225                 act->data.moveresize.x = x_root;
 226                 act->data.moveresize.y = y_root;
 227                 act->data.moveresize.button = button;
 228                 if (!(act->data.moveresize.corner ==
 229                       prop_atoms.net_wm_moveresize_move ||
 230                       act->data.moveresize.corner ==
 231                       prop_atoms.net_wm_moveresize_move_keyboard ||
 232                       act->data.moveresize.corner ==
 233                       prop_atoms.net_wm_moveresize_size_keyboard))
 234                     act->data.moveresize.corner = corner;
 235             } else
 236                 g_assert_not_reached();
 237
 238             act->func(&act->data);
 239         }
 240     }
 241 }
 242
 243 static guint32 pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 244 {
 245     if (x - cx < cw / 2) {
 246         if (y - cy < ch / 2)
 247             return prop_atoms.net_wm_moveresize_size_topleft;
 248         else
 249             return prop_atoms.net_wm_moveresize_size_bottomleft;
 250     } else {
 251         if (y - cy < ch / 2)
 252             return prop_atoms.net_wm_moveresize_size_topright;
 253         else
 254             return prop_atoms.net_wm_moveresize_size_bottomright;
 255     }
 256 }
 257
 258 static void event(ObEvent *e, void *foo)
 259 {
 260     static Time ltime;
 261     static guint button = 0, state = 0, lbutton = 0;
 262     static int px, py;
 263     gboolean click = FALSE;
 264     gboolean dclick = FALSE;
 265     ObFrameContext context;
 266
 267     switch (e->type) {
 268     case Event_Client_Mapped:
 269         grab_for_client(e->data.c.client, TRUE);
 270         break;
 271
 272     case Event_Client_Destroy:
 273         grab_for_client(e->data.c.client, FALSE);
 274         break;
 275
 276     case Event_X_ButtonPress:
 277         context = frame_context(e->data.x.client,
 278                                 e->data.x.e->xbutton.window);
 279
 280         px = e->data.x.e->xbutton.x_root;
 281         py = e->data.x.e->xbutton.y_root;
 282         button = e->data.x.e->xbutton.button;
 283         state = e->data.x.e->xbutton.state;
 284
 285         fire_button(MouseAction_Press, context,
 286                     e->data.x.client, e->data.x.e->xbutton.state,
 287                     e->data.x.e->xbutton.button,
 288                     e->data.x.e->xbutton.x_root, e->data.x.e->xbutton.y_root);
 289
 290         if (context == OB_FRAME_CONTEXT_CLIENT) {
 291             /* Replay the event, so it goes to the client*/
 292             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 293             /* Fall through to the release case! */
 294         } else
 295             break;
 296
 297     case Event_X_ButtonRelease:
 298         context = frame_context(e->data.x.client,
 299                                 e->data.x.e->xbutton.window);
 300         if (e->data.x.e->xbutton.button == button) {
 301             /* clicks are only valid if its released over the window */
 302             int junk1, junk2;
 303             Window wjunk;
 304             guint ujunk, b, w, h;
 305             XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 306                          &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 307             if (e->data.x.e->xbutton.x >= (signed)-b &&
 308                 e->data.x.e->xbutton.y >= (signed)-b &&
 309                 e->data.x.e->xbutton.x < (signed)(w+b) &&
 310                 e->data.x.e->xbutton.y < (signed)(h+b)) {
 311                 click = TRUE;
 312                 /* double clicks happen if there were 2 in a row! */
 313                 if (lbutton == button &&
 314                     e->data.x.e->xbutton.time - dclicktime <= ltime) {
 315                     dclick = TRUE;
 316                     lbutton = 0;
 317                 } else
 318                     lbutton = button;
 319             } else
 320                 lbutton = 0;
 321
 322             button = 0;
 323             state = 0;
 324             ltime = e->data.x.e->xbutton.time;
 325         }
 326         fire_button(MouseAction_Release, context,
 327                     e->data.x.client, e->data.x.e->xbutton.state,
 328                     e->data.x.e->xbutton.button,
 329                     e->data.x.e->xbutton.x_root, e->data.x.e->xbutton.y_root);
 330         if (click)
 331             fire_button(MouseAction_Click, context,
 332                         e->data.x.client, e->data.x.e->xbutton.state,
 333                         e->data.x.e->xbutton.button,
 334                         e->data.x.e->xbutton.x_root,
 335                         e->data.x.e->xbutton.y_root);
 336         if (dclick)
 337             fire_button(MouseAction_DClick, context,
 338                         e->data.x.client, e->data.x.e->xbutton.state,
 339                         e->data.x.e->xbutton.button,
 340                         e->data.x.e->xbutton.x_root,
 341                         e->data.x.e->xbutton.y_root);
 342         break;
 343
 344     case Event_X_MotionNotify:
 345         if (button) {
 346             if (ABS(e->data.x.e->xmotion.x_root - px) >= threshold ||
 347                 ABS(e->data.x.e->xmotion.y_root - py) >= threshold) {
 348                 guint32 corner;
 349
 350                 context = frame_context(e->data.x.client,
 351                                         e->data.x.e->xmotion.window);
 352
 353                 /* You can't drag on buttons */
 354                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 355                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 356                     context == OB_FRAME_CONTEXT_SHADE ||
 357                     context == OB_FRAME_CONTEXT_ICONIFY ||
 358                     context == OB_FRAME_CONTEXT_ICON ||
 359                     context == OB_FRAME_CONTEXT_CLOSE)
 360                     break;
 361
 362                 if (!e->data.x.client)
 363                     corner = prop_atoms.net_wm_moveresize_size_bottomright;
 364                 else
 365                     corner =
 366                         pick_corner(e->data.x.e->xmotion.x_root,
 367                                     e->data.x.e->xmotion.y_root,
 368                                     e->data.x.client->frame->area.x,
 369                                     e->data.x.client->frame->area.y,
 370                                     /* use the client size because the frame
 371                                        can be differently sized (shaded
 372                                        windows) and we want this based on the
 373                                        clients size */
 374                                     e->data.x.client->area.width +
 375                                     e->data.x.client->frame->size.left +
 376                                     e->data.x.client->frame->size.right,
 377                                     e->data.x.client->area.height +
 378                                     e->data.x.client->frame->size.top +
 379                                     e->data.x.client->frame->size.bottom);
 380                 fire_motion(MouseAction_Motion, context,
 381                             e->data.x.client, state, button,
 382                             e->data.x.e->xmotion.x_root,
 383                             e->data.x.e->xmotion.y_root, corner);
 384                 button = 0;
 385                 state = 0;
 386             }
 387         }
 388         break;
 389
 390     default:
 391         g_assert_not_reached();
 392     }
 393 }
 394
 395 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 396                Action *action)
 397 {
 398     guint state, button;
 399     ObFrameContext context;
 400     MouseBinding *b;
 401     GSList *it;
 402
 403     if (!translate_button(buttonstr, &state, &button)) {
 404         g_warning("invalid button '%s'", buttonstr);
 405         return FALSE;
 406     }
 407
 408     contextstr = g_ascii_strdown(contextstr, -1);
 409     context = frame_context_from_string(contextstr);
 410     if (!context) {
 411         g_warning("invalid context '%s'", contextstr);
 412         g_free(contextstr);
 413         return FALSE;
 414     }
 415     g_free(contextstr);
 416
 417     for (it = bound_contexts[context]; it != NULL; it = it->next){
 418         b = it->data;
 419         if (b->state == state && b->button == button) {
 420             b->actions[mact] = g_slist_append(b->actions[mact], action);
 421             return TRUE;
 422         }
 423     }
 424
 425     grab_all_clients(FALSE);
 426
 427     /* add the binding */
 428     b = g_new0(MouseBinding, 1);
 429     b->state = state;
 430     b->button = button;
 431     b->actions[mact] = g_slist_append(NULL, action);
 432     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 433
 434     grab_all_clients(TRUE);
 435
 436     return TRUE;
 437 }
 438
 439 void plugin_startup()
 440 {
 441     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 442                       Event_X_ButtonPress | Event_X_ButtonRelease |
 443                       Event_X_MotionNotify, (EventHandler)event, NULL);
 444 }
 445
 446 void plugin_shutdown()
 447 {
 448     dispatch_register(0, (EventHandler)event, NULL);
 449
 450     grab_all_clients(FALSE);
 451     clearall();
 452 }