Dogcows Code - chaz/openbox/blob - 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/frame.h"
   7 #include "../../kernel/grab.h"
   8 #include "../../kernel/engine.h"
   9 #include "../../kernel/config.h"
  10 #include "translate.h"
  11 #include "mouse.h"
  12 #include "mouserc_parse.h"
  13 #include <glib.h>
  14
  15 void plugin_setup_config()
  16 {
  17     config_def_set(config_def_new("mouse.dragThreshold", Config_Integer,
  18                                   "Drag Threshold",
  19                                   "The drag threshold in pixels before a Drag "
  20                                   "event starts."));
  21     config_def_set(config_def_new("mouse.doubleClickTime", Config_Integer,
  22                                   "Double Click Interval",
  23                                   "The amount of time (in milliseconds) in "
  24                                   "which two clicks must occur to cause a "
  25                                   "DoubleClick event."));
  26 }
  27
  28 /* GData of GSList*s of PointerBinding*s. */
  29 static GData *bound_contexts;
  30
  31 struct foreach_grab_temp {
  32     Client *client;
  33     gboolean grab;
  34 };
  35
  36 static void foreach_grab(GQuark key, gpointer data, gpointer user_data)
  37 {
  38     struct foreach_grab_temp *d = user_data;
  39     GSList *it;
  40     for (it = data; it != NULL; it = it->next) {
  41         /* grab/ungrab the button */
  42         MouseBinding *b = it->data;
  43         Window win;
  44         int mode;
  45         unsigned int mask;
  46
  47         if (key == g_quark_try_string("frame")) {
  48             win = d->client->frame->window;
  49             mode = GrabModeAsync;
  50             mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  51         } else if (key == g_quark_try_string("client")) {
  52             win = d->client->frame->plate;
  53             mode = GrabModeSync; /* this is handled in event */
  54             mask = ButtonPressMask; /* can't catch more than this with Sync
  55                                        mode the release event is manufactured
  56                                        in event */
  57         } else return;
  58
  59         if (d->grab)
  60             grab_button(b->button, b->state, win, mask, mode);
  61         else
  62             ungrab_button(b->button, b->state, win);
  63     }
  64 }
  65
  66 static void grab_for_client(Client *client, gboolean grab)
  67 {
  68     struct foreach_grab_temp bt;
  69     bt.client = client;
  70     bt.grab = grab;
  71     g_datalist_foreach(&bound_contexts, foreach_grab, &bt);
  72 }
  73
  74 static void grab_all_clients(gboolean grab)
  75 {
  76     GSList *it;
  77
  78     for (it = client_list; it != NULL; it = it->next)
  79         grab_for_client(it->data, grab);
  80 }
  81
  82 static void foreach_clear(GQuark key, gpointer data, gpointer user_data)
  83 {
  84     GSList *it;
  85     user_data = user_data;
  86     for (it = data; it != NULL; it = it->next) {
  87         int i;
  88
  89         MouseBinding *b = it->data;
  90         for (i = 0; i < NUM_MOUSEACTION; ++i)
  91             if (b->action[i] != NULL)
  92                 action_free(b->action[i]);
  93         g_free(b);
  94     }
  95     g_slist_free(data);
  96 }
  97
  98 static void fire_button(MouseAction a, GQuark context, Client *c, guint state,
  99                         guint button)
 100 {
 101     GSList *it;
 102     MouseBinding *b;
 103
 104     for (it = g_datalist_id_get_data(&bound_contexts, context);
 105          it != NULL; it = it->next) {
 106         b = it->data;
 107         if (b->state == state && b->button == button)
 108             break;
 109     }
 110     /* if not bound, then nothing to do! */
 111     if (it == NULL) return;
 112
 113     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 114         b->action[a]->data.any.c = c;
 115
 116         g_assert(!(b->action[a]->func == action_move ||
 117                    b->action[a]->func == action_resize));
 118
 119         b->action[a]->func(&b->action[a]->data);
 120     }
 121 }
 122
 123 /* corner should be the opposite corner of the window in which the pointer
 124    clicked, Corner_TopLeft if a good default if there is no client
 125    Returns True or False for if a binding existed for the action or not.
 126 */
 127 static gboolean fire_motion(MouseAction a, GQuark context, Client *c,
 128                             guint state, guint button, int cx, int cy,
 129                             int cw, int ch, int dx, int dy,
 130                             gboolean final, Corner corner)
 131 {
 132     GSList *it;
 133     MouseBinding *b;
 134
 135     for (it = g_datalist_id_get_data(&bound_contexts, context);
 136          it != NULL; it = it->next) {
 137         b = it->data;
 138         if (b->state == state && b->button == button)
 139                 break;
 140     }
 141     /* if not bound, then nothing to do! */
 142     if (it == NULL) return FALSE;
 143
 144     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 145         b->action[a]->data.any.c = c;
 146
 147         if (b->action[a]->func == action_move) {
 148             b->action[a]->data.move.x = cx + dx;
 149             b->action[a]->data.move.y = cy + dy;
 150             b->action[a]->data.move.final = final;
 151         } else if (b->action[a]->func == action_resize) {
 152             b->action[a]->data.resize.corner = corner;
 153             switch (corner) {
 154             case Corner_TopLeft:
 155                 b->action[a]->data.resize.x = cw + dx;
 156                 b->action[a]->data.resize.y = ch + dy;
 157                 break;
 158             case Corner_TopRight:
 159                 b->action[a]->data.resize.x = cw - dx;
 160                 b->action[a]->data.resize.y = ch + dy;
 161                 break;
 162             case Corner_BottomLeft:
 163                 b->action[a]->data.resize.x = cw + dx;
 164                 b->action[a]->data.resize.y = ch - dy;
 165                 break;
 166             case Corner_BottomRight:
 167                 b->action[a]->data.resize.x = cw - dx;
 168                 b->action[a]->data.resize.y = ch - dy;
 169                 break;
 170             }
 171             b->action[a]->data.resize.final = final;
 172         }
 173         b->action[a]->func(&b->action[a]->data);
 174         return TRUE;
 175     }
 176     return FALSE;
 177 }
 178
 179 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 180 {
 181     if (x - cx < cw / 2) {
 182         if (y - cy < ch / 2)
 183             return Corner_BottomRight;
 184         else
 185             return Corner_TopRight;
 186     } else {
 187         if (y - cy < ch / 2)
 188             return Corner_BottomLeft;
 189         else
 190             return Corner_TopLeft;
 191     }
 192 }
 193
 194 static void event(ObEvent *e, void *foo)
 195 {
 196     static Time ltime;
 197     static int px, py, cx, cy, cw, ch, dx, dy;
 198     static guint button = 0, lbutton = 0;
 199     static gboolean drag = FALSE, drag_used = FALSE;
 200     static Corner corner = Corner_TopLeft;
 201     ConfigValue doubleclicktime;
 202     ConfigValue dragthreshold;
 203     gboolean click = FALSE;
 204     gboolean dclick = FALSE;
 205     GQuark context;
 206
 207     if (!config_get("mouse.dragThreshold", Config_Integer, &dragthreshold))
 208         dragthreshold.integer = 3; /* default */
 209     if (!config_get("mouse.doubleClickTime", Config_Integer, &doubleclicktime))
 210         doubleclicktime.integer = 200; /* default */
 211
 212     switch (e->type) {
 213     case Event_Client_Mapped:
 214         grab_for_client(e->data.c.client, TRUE);
 215         break;
 216
 217     case Event_Client_Destroy:
 218         grab_for_client(e->data.c.client, FALSE);
 219         break;
 220
 221     case Event_X_ButtonPress:
 222         if (!button) {
 223             if (e->data.x.client != NULL) {
 224                 cx = e->data.x.client->frame->area.x;
 225                 cy = e->data.x.client->frame->area.y;
 226                 /* use the client size because the frame can be differently
 227                    sized (shaded windows) and we want this based on the clients
 228                    size */
 229                 cw = e->data.x.client->area.width +
 230                     e->data.x.client->frame->size.left +
 231                     e->data.x.client->frame->size.right;
 232                 ch = e->data.x.client->area.height +
 233                     e->data.x.client->frame->size.top +
 234                     e->data.x.client->frame->size.bottom;
 235                 px = e->data.x.e->xbutton.x_root;
 236                 py = e->data.x.e->xbutton.y_root;
 237                 corner = pick_corner(px, py, cx, cy, cw, ch);
 238             }
 239             button = e->data.x.e->xbutton.button;
 240         }
 241         context = engine_get_context(e->data.x.client,
 242                                      e->data.x.e->xbutton.window);
 243
 244         fire_button(MouseAction_Press, context,
 245                     e->data.x.client, e->data.x.e->xbutton.state,
 246                     e->data.x.e->xbutton.button);
 247
 248         if (context == g_quark_try_string("client")) {
 249             /* Replay the event, so it goes to the client*/
 250             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 251             /* Fall through to the release case! */
 252         } else
 253             break;
 254
 255     case Event_X_ButtonRelease:
 256         context = engine_get_context(e->data.x.client,
 257                                      e->data.x.e->xbutton.window);
 258         if (e->data.x.e->xbutton.button == button) {
 259             /* end drags */
 260             if (drag_used) {
 261                 fire_motion(MouseAction_Motion, context,
 262                             e->data.x.client, e->data.x.e->xbutton.state,
 263                             e->data.x.e->xbutton.button,
 264                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 265                 drag = drag_used = FALSE;
 266
 267                 lbutton = 0;
 268             } else {
 269                 /* clicks are only valid if its released over the window */
 270                 int junk;
 271                 Window wjunk;
 272                 guint ujunk, b, w, h;
 273                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 274                              &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 275                 if (e->data.x.e->xbutton.x >= (signed)-b &&
 276                     e->data.x.e->xbutton.y >= (signed)-b &&
 277                     e->data.x.e->xbutton.x < (signed)(w+b) &&
 278                     e->data.x.e->xbutton.y < (signed)(h+b)) {
 279                     click = TRUE;
 280                     /* double clicks happen if there were 2 in a row! */
 281                     if (lbutton == button &&
 282                         e->data.x.e->xbutton.time - doubleclicktime.integer <=
 283                         ltime) {
 284                         dclick = TRUE;
 285                         lbutton = 0;
 286                     } else
 287                         lbutton = button;
 288                 } else
 289                     lbutton = 0;
 290             }
 291
 292             button = 0;
 293             ltime = e->data.x.e->xbutton.time;
 294         }
 295         fire_button(MouseAction_Release, context,
 296                     e->data.x.client, e->data.x.e->xbutton.state,
 297                     e->data.x.e->xbutton.button);
 298         if (click)
 299             fire_button(MouseAction_Click, context,
 300                         e->data.x.client, e->data.x.e->xbutton.state,
 301                         e->data.x.e->xbutton.button);
 302         if (dclick)
 303             fire_button(MouseAction_DClick, context,
 304                         e->data.x.client, e->data.x.e->xbutton.state,
 305                         e->data.x.e->xbutton.button);
 306         break;
 307
 308     case Event_X_MotionNotify:
 309         if (button) {
 310             dx = e->data.x.e->xmotion.x_root - px;
 311             dy = e->data.x.e->xmotion.y_root - py;
 312             if (!drag &&
 313                 (ABS(dx) >= dragthreshold.integer ||
 314                  ABS(dy) >= dragthreshold.integer))
 315                 drag = TRUE;
 316             if (drag) {
 317                 context = engine_get_context(e->data.x.client,
 318                                              e->data.x.e->xbutton.window);
 319                 drag_used = fire_motion(MouseAction_Motion, context,
 320                                         e->data.x.client,
 321                                         e->data.x.e->xmotion.state,
 322                                         button, cx, cy, cw, ch, dx, dy,
 323                                         FALSE, corner);
 324             }
 325         }
 326         break;
 327
 328     default:
 329         g_assert_not_reached();
 330     }
 331 }
 332
 333 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 334                Action *action)
 335 {
 336     guint state, button;
 337     GQuark context;
 338     MouseBinding *b;
 339     GSList *it;
 340
 341     if (!translate_button(buttonstr, &state, &button)) {
 342         g_warning("invalid button '%s'", buttonstr);
 343         return FALSE;
 344     }
 345
 346     contextstr = g_ascii_strdown(contextstr, -1);
 347     context = g_quark_try_string(contextstr);
 348     if (!context) {
 349         g_warning("invalid context '%s'", contextstr);
 350         g_free(contextstr);
 351         return FALSE;
 352     }
 353     g_free(contextstr);
 354
 355     for (it = g_datalist_id_get_data(&bound_contexts, context);
 356          it != NULL; it = it->next){
 357         b = it->data;
 358         if (b->state == state && b->button == button) {
 359             /* already bound */
 360             if (b->action[mact] != NULL) {
 361                 g_warning("duplicate binding");
 362                 return FALSE;
 363             }
 364             b->action[mact] = action;
 365             return TRUE;
 366         }
 367     }
 368
 369     grab_all_clients(FALSE);
 370
 371     /* add the binding */
 372     b = g_new0(MouseBinding, 1);
 373     b->state = state;
 374     b->button = button;
 375     b->action[mact] = action;
 376     g_datalist_id_set_data(&bound_contexts, context,
 377         g_slist_append(g_datalist_id_get_data(&bound_contexts, context), b));
 378
 379     grab_all_clients(TRUE);
 380
 381     return TRUE;
 382 }
 383
 384 void plugin_startup()
 385 {
 386     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 387                       Event_X_ButtonPress | Event_X_ButtonRelease |
 388                       Event_X_MotionNotify, (EventHandler)event, NULL);
 389
 390     mouserc_parse();
 391 }
 392
 393 void plugin_shutdown()
 394 {
 395     dispatch_register(0, (EventHandler)event, NULL);
 396
 397     grab_all_clients(FALSE);
 398     g_datalist_foreach(&bound_contexts, foreach_clear, NULL);
 399 }