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/grab.h"
   7 #include "kernel/parse.h"
   8 #include "kernel/frame.h"
   9 #include "translate.h"
  10 #include "mouse.h"
  11 #include "mouseparse.h"
  12 #include <glib.h>
  13
  14 static int threshold;
  15 static int dclicktime;
  16
  17 static void parse_assign(char *name, ParseToken *value)
  18 {
  19     if (!g_ascii_strcasecmp(name, "dragthreshold")) {
  20         if (value->type != TOKEN_INTEGER)
  21             yyerror("invalid value");
  22         else {
  23             if (value->data.integer >= 0)
  24                 threshold = value->data.integer;
  25         }
  26     } else if (!g_ascii_strcasecmp(name, "doubleclicktime")) {
  27         if (value->type != TOKEN_INTEGER)
  28             yyerror("invalid value");
  29         else {
  30             if (value->data.integer >= 0)
  31                 dclicktime = value->data.integer;
  32         }
  33     } else
  34         yyerror("invalid option");
  35     parse_free_token(value);
  36 }
  37
  38 void plugin_setup_config()
  39 {
  40     threshold = 3;
  41     dclicktime = 200;
  42     parse_reg_section("mouse", mouseparse, parse_assign);
  43 }
  44
  45 /* Array of GSList*s of PointerBinding*s. */
  46 static GSList *bound_contexts[NUM_CONTEXTS];
  47
  48 static void grab_for_client(Client *client, gboolean grab)
  49 {
  50     int i;
  51     GSList *it;
  52
  53     for (i = 0; i < NUM_CONTEXTS; ++i)
  54         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  55             /* grab/ungrab the button */
  56             MouseBinding *b = it->data;
  57             Window win;
  58             int mode;
  59             unsigned int mask;
  60
  61             if (i == Context_Frame) {
  62                 win = client->frame->window;
  63                 mode = GrabModeAsync;
  64                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  65             } else if (i == Context_Client) {
  66                 win = client->frame->plate;
  67                 mode = GrabModeSync; /* this is handled in event */
  68                 mask = ButtonPressMask; /* can't catch more than this with Sync
  69                                            mode the release event is
  70                                            manufactured in event() */
  71             } else continue;
  72
  73             if (grab)
  74                 grab_button(b->button, b->state, win, mask, mode);
  75             else
  76                 ungrab_button(b->button, b->state, win);
  77         }
  78 }
  79
  80 static void grab_all_clients(gboolean grab)
  81 {
  82     GList *it;
  83
  84     for (it = client_list; it != NULL; it = it->next)
  85         grab_for_client(it->data, grab);
  86 }
  87
  88 static void clearall()
  89 {
  90     int i;
  91     GSList *it;
  92
  93     for(i = 0; i < NUM_CONTEXTS; ++i) {
  94         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  95             int j;
  96
  97             MouseBinding *b = it->data;
  98             for (j = 0; j < NUM_MOUSEACTION; ++j)
  99                 if (b->action[j] != NULL)
 100                     action_free(b->action[j]);
 101             g_free(b);
 102         }
 103         g_slist_free(bound_contexts[i]);
 104     }
 105 }
 106
 107 static void fire_button(MouseAction a, Context context, Client *c, guint state,
 108                         guint button, int x, int y)
 109 {
 110     GSList *it;
 111     MouseBinding *b;
 112
 113     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 114         b = it->data;
 115         if (b->state == state && b->button == button)
 116             break;
 117     }
 118     /* if not bound, then nothing to do! */
 119     if (it == NULL) return;
 120
 121     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 122         b->action[a]->data.any.c = c;
 123
 124         g_assert(!(b->action[a]->func == action_move ||
 125                    b->action[a]->func == action_resize));
 126
 127         if (b->action[a]->func == action_showmenu) {
 128             b->action[a]->data.showmenu.x = x;
 129             b->action[a]->data.showmenu.y = y;
 130         }
 131
 132         b->action[a]->func(&b->action[a]->data);
 133     }
 134 }
 135
 136 /* corner should be the opposite corner of the window in which the pointer
 137    clicked, Corner_TopLeft if a good default if there is no client
 138    Returns True or False for if a binding existed for the action or not.
 139 */
 140 static gboolean fire_motion(MouseAction a, Context context, Client *c,
 141                             guint state, guint button, int cx, int cy,
 142                             int cw, int ch, int dx, int dy,
 143                             gboolean final, Corner corner)
 144 {
 145     GSList *it;
 146     MouseBinding *b;
 147
 148     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 149         b = it->data;
 150         if (b->state == state && b->button == button)
 151                 break;
 152     }
 153     /* if not bound, then nothing to do! */
 154     if (it == NULL) return FALSE;
 155
 156     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 157         b->action[a]->data.any.c = c;
 158
 159         if (b->action[a]->func == action_move) {
 160             b->action[a]->data.move.x = cx + dx;
 161             b->action[a]->data.move.y = cy + dy;
 162             b->action[a]->data.move.final = final;
 163         } else if (b->action[a]->func == action_resize) {
 164             b->action[a]->data.resize.corner = corner;
 165             switch (corner) {
 166             case Corner_TopLeft:
 167                 b->action[a]->data.resize.x = cw + dx;
 168                 b->action[a]->data.resize.y = ch + dy;
 169                 break;
 170             case Corner_TopRight:
 171                 b->action[a]->data.resize.x = cw - dx;
 172                 b->action[a]->data.resize.y = ch + dy;
 173                 break;
 174             case Corner_BottomLeft:
 175                 b->action[a]->data.resize.x = cw + dx;
 176                 b->action[a]->data.resize.y = ch - dy;
 177                 break;
 178             case Corner_BottomRight:
 179                 b->action[a]->data.resize.x = cw - dx;
 180                 b->action[a]->data.resize.y = ch - dy;
 181                 break;
 182             }
 183             b->action[a]->data.resize.final = final;
 184         } else
 185             g_assert_not_reached();
 186         b->action[a]->func(&b->action[a]->data);
 187         return TRUE;
 188     }
 189     return FALSE;
 190 }
 191
 192 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 193 {
 194     if (x - cx < cw / 2) {
 195         if (y - cy < ch / 2)
 196             return Corner_BottomRight;
 197         else
 198             return Corner_TopRight;
 199     } else {
 200         if (y - cy < ch / 2)
 201             return Corner_BottomLeft;
 202         else
 203             return Corner_TopLeft;
 204     }
 205 }
 206
 207 static void event(ObEvent *e, void *foo)
 208 {
 209     static Time ltime;
 210     static int px, py, cx, cy, cw, ch, dx, dy;
 211     static guint button = 0, state = 0, lbutton = 0;
 212     static gboolean drag = FALSE, drag_used = FALSE;
 213     static Corner corner = Corner_TopLeft;
 214     gboolean click = FALSE;
 215     gboolean dclick = FALSE;
 216     Context context;
 217
 218     switch (e->type) {
 219     case Event_Client_Mapped:
 220         grab_for_client(e->data.c.client, TRUE);
 221         break;
 222
 223     case Event_Client_Destroy:
 224         grab_for_client(e->data.c.client, FALSE);
 225         break;
 226
 227     case Event_X_ButtonPress:
 228         if (!button) {
 229             if (e->data.x.client != NULL) {
 230                 cx = e->data.x.client->frame->area.x;
 231                 cy = e->data.x.client->frame->area.y;
 232                 /* use the client size because the frame can be differently
 233                    sized (shaded windows) and we want this based on the clients
 234                    size */
 235                 cw = e->data.x.client->area.width +
 236                     e->data.x.client->frame->size.left +
 237                     e->data.x.client->frame->size.right;
 238                 ch = e->data.x.client->area.height +
 239                     e->data.x.client->frame->size.top +
 240                     e->data.x.client->frame->size.bottom;
 241                 px = e->data.x.e->xbutton.x_root;
 242                 py = e->data.x.e->xbutton.y_root;
 243                 corner = pick_corner(px, py, cx, cy, cw, ch);
 244             }
 245             button = e->data.x.e->xbutton.button;
 246             state = e->data.x.e->xbutton.state;
 247         }
 248         context = frame_context(e->data.x.client,
 249                                 e->data.x.e->xbutton.window);
 250
 251         fire_button(MouseAction_Press, context,
 252                     e->data.x.client, e->data.x.e->xbutton.state,
 253                     e->data.x.e->xbutton.button,
 254                     e->data.x.e->xbutton.x_root, e->data.x.e->xbutton.y_root);
 255
 256         if (context == Context_Client) {
 257             /* Replay the event, so it goes to the client*/
 258             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 259             /* Fall through to the release case! */
 260         } else
 261             break;
 262
 263     case Event_X_ButtonRelease:
 264         context = frame_context(e->data.x.client,
 265                                 e->data.x.e->xbutton.window);
 266         if (e->data.x.e->xbutton.button == button) {
 267             /* end drags */
 268             if (drag_used) {
 269                 fire_motion(MouseAction_Motion, context,
 270                             e->data.x.client, state, button,
 271                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 272                 drag = drag_used = FALSE;
 273
 274                 lbutton = 0;
 275             } else {
 276                 /* clicks are only valid if its released over the window */
 277                 int junk;
 278                 Window wjunk;
 279                 guint ujunk, b, w, h;
 280                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 281                              &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 282                 if (e->data.x.e->xbutton.x >= (signed)-b &&
 283                     e->data.x.e->xbutton.y >= (signed)-b &&
 284                     e->data.x.e->xbutton.x < (signed)(w+b) &&
 285                     e->data.x.e->xbutton.y < (signed)(h+b)) {
 286                     click = TRUE;
 287                     /* double clicks happen if there were 2 in a row! */
 288                     if (lbutton == button &&
 289                         e->data.x.e->xbutton.time - dclicktime <= ltime) {
 290                         dclick = TRUE;
 291                         lbutton = 0;
 292                     } else
 293                         lbutton = button;
 294                 } else
 295                     lbutton = 0;
 296             }
 297
 298             button = 0;
 299             state = 0;
 300             ltime = e->data.x.e->xbutton.time;
 301         }
 302         fire_button(MouseAction_Release, context,
 303                     e->data.x.client, e->data.x.e->xbutton.state,
 304                     e->data.x.e->xbutton.button,
 305                     e->data.x.e->xbutton.x_root, e->data.x.e->xbutton.y_root);
 306         if (click)
 307             fire_button(MouseAction_Click, context,
 308                         e->data.x.client, e->data.x.e->xbutton.state,
 309                         e->data.x.e->xbutton.button,
 310                         e->data.x.e->xbutton.x_root,
 311                         e->data.x.e->xbutton.y_root);
 312         if (dclick)
 313             fire_button(MouseAction_DClick, context,
 314                         e->data.x.client, e->data.x.e->xbutton.state,
 315                         e->data.x.e->xbutton.button,
 316                         e->data.x.e->xbutton.x_root,
 317                         e->data.x.e->xbutton.y_root);
 318         break;
 319
 320     case Event_X_MotionNotify:
 321         if (button) {
 322             dx = e->data.x.e->xmotion.x_root - px;
 323             dy = e->data.x.e->xmotion.y_root - py;
 324             if (!drag &&
 325                 (ABS(dx) >= threshold || ABS(dy) >= threshold))
 326                 drag = TRUE;
 327             if (drag) {
 328                 context = frame_context(e->data.x.client,
 329                                         e->data.x.e->xbutton.window);
 330                 drag_used = fire_motion(MouseAction_Motion, context,
 331                                         e->data.x.client,
 332                                         state, button, cx, cy, cw, ch, dx, dy,
 333                                         FALSE, corner);
 334             }
 335         }
 336         break;
 337
 338     default:
 339         g_assert_not_reached();
 340     }
 341 }
 342
 343 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 344                Action *action)
 345 {
 346     guint state, button;
 347     Context context;
 348     MouseBinding *b;
 349     GSList *it;
 350
 351     if (!translate_button(buttonstr, &state, &button)) {
 352         g_warning("invalid button '%s'", buttonstr);
 353         return FALSE;
 354     }
 355
 356     contextstr = g_ascii_strdown(contextstr, -1);
 357     context = frame_context_from_string(contextstr);
 358     if (!context) {
 359         g_warning("invalid context '%s'", contextstr);
 360         g_free(contextstr);
 361         return FALSE;
 362     }
 363     g_free(contextstr);
 364
 365     for (it = bound_contexts[context]; it != NULL; it = it->next){
 366         b = it->data;
 367         if (b->state == state && b->button == button) {
 368             /* already bound */
 369             if (b->action[mact] != NULL) {
 370                 g_warning("duplicate binding");
 371                 return FALSE;
 372             }
 373             b->action[mact] = action;
 374             return TRUE;
 375         }
 376     }
 377
 378     grab_all_clients(FALSE);
 379
 380     /* add the binding */
 381     b = g_new0(MouseBinding, 1);
 382     b->state = state;
 383     b->button = button;
 384     b->action[mact] = action;
 385     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 386
 387     grab_all_clients(TRUE);
 388
 389     return TRUE;
 390 }
 391
 392 void plugin_startup()
 393 {
 394     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 395                       Event_X_ButtonPress | Event_X_ButtonRelease |
 396                       Event_X_MotionNotify, (EventHandler)event, NULL);
 397 }
 398
 399 void plugin_shutdown()
 400 {
 401     dispatch_register(0, (EventHandler)event, NULL);
 402
 403     grab_all_clients(FALSE);
 404     clearall();
 405 }