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                 if (b->action[j] != NULL)
 101                     action_free(b->action[j]);
 102             g_free(b);
 103         }
 104         g_slist_free(bound_contexts[i]);
 105     }
 106 }
 107
 108 static void fire_button(MouseAction a, Context context, Client *c, guint state,
 109                         guint button, int x, int y)
 110 {
 111     GSList *it;
 112     MouseBinding *b;
 113
 114     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 115         b = it->data;
 116         if (b->state == state && b->button == button)
 117             break;
 118     }
 119     /* if not bound, then nothing to do! */
 120     if (it == NULL) return;
 121
 122     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 123         b->action[a]->data.any.c = c;
 124
 125         g_assert(b->action[a]->func != action_moveresize);
 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 static void fire_motion(MouseAction a, Context context, Client *c,
 137                         guint state, guint button, int x_root, int y_root,
 138                         guint32 corner)
 139 {
 140     GSList *it;
 141     MouseBinding *b;
 142
 143     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 144         b = it->data;
 145         if (b->state == state && b->button == button)
 146                 break;
 147     }
 148     /* if not bound, then nothing to do! */
 149     if (it == NULL) return;
 150
 151     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 152         b->action[a]->data.any.c = c;
 153
 154         if (b->action[a]->func == action_moveresize) {
 155             b->action[a]->data.moveresize.x = x_root;
 156             b->action[a]->data.moveresize.y = y_root;
 157             b->action[a]->data.moveresize.button = button;
 158             if (!(b->action[a]->data.moveresize.corner ==
 159                   prop_atoms.net_wm_moveresize_move ||
 160                   b->action[a]->data.moveresize.corner ==
 161                   prop_atoms.net_wm_moveresize_move_keyboard ||
 162                   b->action[a]->data.moveresize.corner ==
 163                   prop_atoms.net_wm_moveresize_size_keyboard))
 164                 b->action[a]->data.moveresize.corner = corner;
 165         } else
 166             g_assert_not_reached();
 167
 168         b->action[a]->func(&b->action[a]->data);
 169     }
 170 }
 171
 172 static guint32 pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 173 {
 174     if (x - cx < cw / 2) {
 175         if (y - cy < ch / 2)
 176             return prop_atoms.net_wm_moveresize_size_topleft;
 177         else
 178             return prop_atoms.net_wm_moveresize_size_bottomleft;
 179     } else {
 180         if (y - cy < ch / 2)
 181             return prop_atoms.net_wm_moveresize_size_topright;
 182         else
 183             return prop_atoms.net_wm_moveresize_size_bottomright;
 184     }
 185 }
 186
 187 static void event(ObEvent *e, void *foo)
 188 {
 189     static Time ltime;
 190     static guint button = 0, state = 0, lbutton = 0;
 191     static int px, py;
 192     gboolean click = FALSE;
 193     gboolean dclick = FALSE;
 194     Context context;
 195
 196     switch (e->type) {
 197     case Event_Client_Mapped:
 198         grab_for_client(e->data.c.client, TRUE);
 199         break;
 200
 201     case Event_Client_Destroy:
 202         grab_for_client(e->data.c.client, FALSE);
 203         break;
 204
 205     case Event_X_ButtonPress:
 206         context = frame_context(e->data.x.client,
 207                                 e->data.x.e->xbutton.window);
 208
 209         if (!button) {
 210             px = e->data.x.e->xbutton.x_root;
 211             py = e->data.x.e->xbutton.y_root;
 212             button = e->data.x.e->xbutton.button;
 213             state = e->data.x.e->xbutton.state;
 214         }
 215
 216         fire_button(MouseAction_Press, context,
 217                     e->data.x.client, e->data.x.e->xbutton.state,
 218                     e->data.x.e->xbutton.button,
 219                     e->data.x.e->xbutton.x_root, e->data.x.e->xbutton.y_root);
 220
 221         if (context == Context_Client) {
 222             /* Replay the event, so it goes to the client*/
 223             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 224             /* Fall through to the release case! */
 225         } else
 226             break;
 227
 228     case Event_X_ButtonRelease:
 229         context = frame_context(e->data.x.client,
 230                                 e->data.x.e->xbutton.window);
 231         if (e->data.x.e->xbutton.button == button) {
 232             /* clicks are only valid if its released over the window */
 233             int junk;
 234             Window wjunk;
 235             guint ujunk, b, w, h;
 236             XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 237                          &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 238             if (e->data.x.e->xbutton.x >= (signed)-b &&
 239                 e->data.x.e->xbutton.y >= (signed)-b &&
 240                 e->data.x.e->xbutton.x < (signed)(w+b) &&
 241                 e->data.x.e->xbutton.y < (signed)(h+b)) {
 242                 click = TRUE;
 243                 /* double clicks happen if there were 2 in a row! */
 244                 if (lbutton == button &&
 245                     e->data.x.e->xbutton.time - dclicktime <= ltime) {
 246                     dclick = TRUE;
 247                     lbutton = 0;
 248                 } else
 249                     lbutton = button;
 250             } else
 251                 lbutton = 0;
 252
 253             button = 0;
 254             state = 0;
 255             ltime = e->data.x.e->xbutton.time;
 256         }
 257         fire_button(MouseAction_Release, context,
 258                     e->data.x.client, e->data.x.e->xbutton.state,
 259                     e->data.x.e->xbutton.button,
 260                     e->data.x.e->xbutton.x_root, e->data.x.e->xbutton.y_root);
 261         if (click)
 262             fire_button(MouseAction_Click, context,
 263                         e->data.x.client, e->data.x.e->xbutton.state,
 264                         e->data.x.e->xbutton.button,
 265                         e->data.x.e->xbutton.x_root,
 266                         e->data.x.e->xbutton.y_root);
 267         if (dclick)
 268             fire_button(MouseAction_DClick, context,
 269                         e->data.x.client, e->data.x.e->xbutton.state,
 270                         e->data.x.e->xbutton.button,
 271                         e->data.x.e->xbutton.x_root,
 272                         e->data.x.e->xbutton.y_root);
 273         break;
 274
 275     case Event_X_MotionNotify:
 276         if (button) {
 277             if (ABS(e->data.x.e->xmotion.x_root - px) >= threshold ||
 278                 ABS(e->data.x.e->xmotion.y_root - py) >= threshold) {
 279                 guint32 corner;
 280
 281                 if (!e->data.x.client)
 282                     corner = prop_atoms.net_wm_moveresize_size_bottomright;
 283                 else
 284                     corner =
 285                         pick_corner(e->data.x.e->xmotion.x_root,
 286                                     e->data.x.e->xmotion.y_root,
 287                                     e->data.x.client->frame->area.x,
 288                                     e->data.x.client->frame->area.y,
 289                                     /* use the client size because the frame
 290                                        can be differently sized (shaded
 291                                        windows) and we want this based on the
 292                                        clients size */
 293                                     e->data.x.client->area.width +
 294                                     e->data.x.client->frame->size.left +
 295                                     e->data.x.client->frame->size.right,
 296                                     e->data.x.client->area.height +
 297                                     e->data.x.client->frame->size.top +
 298                                     e->data.x.client->frame->size.bottom);
 299                 context = frame_context(e->data.x.client,
 300                                         e->data.x.e->xmotion.window);
 301                 fire_motion(MouseAction_Motion, context,
 302                             e->data.x.client, state, button,
 303                             e->data.x.e->xmotion.x_root,
 304                             e->data.x.e->xmotion.y_root, corner);
 305                 button = 0;
 306                 state = 0;
 307             }
 308         }
 309         break;
 310
 311     default:
 312         g_assert_not_reached();
 313     }
 314 }
 315
 316 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 317                Action *action)
 318 {
 319     guint state, button;
 320     Context context;
 321     MouseBinding *b;
 322     GSList *it;
 323
 324     if (!translate_button(buttonstr, &state, &button)) {
 325         g_warning("invalid button '%s'", buttonstr);
 326         return FALSE;
 327     }
 328
 329     contextstr = g_ascii_strdown(contextstr, -1);
 330     context = frame_context_from_string(contextstr);
 331     if (!context) {
 332         g_warning("invalid context '%s'", contextstr);
 333         g_free(contextstr);
 334         return FALSE;
 335     }
 336     g_free(contextstr);
 337
 338     for (it = bound_contexts[context]; it != NULL; it = it->next){
 339         b = it->data;
 340         if (b->state == state && b->button == button) {
 341             /* already bound */
 342             if (b->action[mact] != NULL) {
 343                 g_warning("duplicate binding");
 344                 return FALSE;
 345             }
 346             b->action[mact] = action;
 347             return TRUE;
 348         }
 349     }
 350
 351     grab_all_clients(FALSE);
 352
 353     /* add the binding */
 354     b = g_new0(MouseBinding, 1);
 355     b->state = state;
 356     b->button = button;
 357     b->action[mact] = action;
 358     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 359
 360     grab_all_clients(TRUE);
 361
 362     return TRUE;
 363 }
 364
 365 void plugin_startup()
 366 {
 367     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 368                       Event_X_ButtonPress | Event_X_ButtonRelease |
 369                       Event_X_MotionNotify, (EventHandler)event, NULL);
 370 }
 371
 372 void plugin_shutdown()
 373 {
 374     dispatch_register(0, (EventHandler)event, NULL);
 375
 376     grab_all_clients(FALSE);
 377     clearall();
 378 }