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