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)
 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         b->action[a]->func(&b->action[a]->data);
 128     }
 129 }
 130
 131 /* corner should be the opposite corner of the window in which the pointer
 132    clicked, Corner_TopLeft if a good default if there is no client
 133    Returns True or False for if a binding existed for the action or not.
 134 */
 135 static gboolean fire_motion(MouseAction a, Context context, Client *c,
 136                             guint state, guint button, int cx, int cy,
 137                             int cw, int ch, int dx, int dy,
 138                             gboolean final, Corner 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 FALSE;
 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_move) {
 155             b->action[a]->data.move.x = cx + dx;
 156             b->action[a]->data.move.y = cy + dy;
 157             b->action[a]->data.move.final = final;
 158         } else if (b->action[a]->func == action_resize) {
 159             b->action[a]->data.resize.corner = corner;
 160             switch (corner) {
 161             case Corner_TopLeft:
 162                 b->action[a]->data.resize.x = cw + dx;
 163                 b->action[a]->data.resize.y = ch + dy;
 164                 break;
 165             case Corner_TopRight:
 166                 b->action[a]->data.resize.x = cw - dx;
 167                 b->action[a]->data.resize.y = ch + dy;
 168                 break;
 169             case Corner_BottomLeft:
 170                 b->action[a]->data.resize.x = cw + dx;
 171                 b->action[a]->data.resize.y = ch - dy;
 172                 break;
 173             case Corner_BottomRight:
 174                 b->action[a]->data.resize.x = cw - dx;
 175                 b->action[a]->data.resize.y = ch - dy;
 176                 break;
 177             }
 178             b->action[a]->data.resize.final = final;
 179         } else
 180             g_assert_not_reached();
 181         b->action[a]->func(&b->action[a]->data);
 182         return TRUE;
 183     }
 184     return FALSE;
 185 }
 186
 187 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 188 {
 189     if (x - cx < cw / 2) {
 190         if (y - cy < ch / 2)
 191             return Corner_BottomRight;
 192         else
 193             return Corner_TopRight;
 194     } else {
 195         if (y - cy < ch / 2)
 196             return Corner_BottomLeft;
 197         else
 198             return Corner_TopLeft;
 199     }
 200 }
 201
 202 static void event(ObEvent *e, void *foo)
 203 {
 204     static Time ltime;
 205     static int px, py, cx, cy, cw, ch, dx, dy;
 206     static guint button = 0, state = 0, lbutton = 0;
 207     static gboolean drag = FALSE, drag_used = FALSE;
 208     static Corner corner = Corner_TopLeft;
 209     gboolean click = FALSE;
 210     gboolean dclick = FALSE;
 211     Context context;
 212
 213     switch (e->type) {
 214     case Event_Client_Mapped:
 215         grab_for_client(e->data.c.client, TRUE);
 216         break;
 217
 218     case Event_Client_Destroy:
 219         grab_for_client(e->data.c.client, FALSE);
 220         break;
 221
 222     case Event_X_ButtonPress:
 223         if (!button) {
 224             if (e->data.x.client != NULL) {
 225                 cx = e->data.x.client->frame->area.x;
 226                 cy = e->data.x.client->frame->area.y;
 227                 /* use the client size because the frame can be differently
 228                    sized (shaded windows) and we want this based on the clients
 229                    size */
 230                 cw = e->data.x.client->area.width +
 231                     e->data.x.client->frame->size.left +
 232                     e->data.x.client->frame->size.right;
 233                 ch = e->data.x.client->area.height +
 234                     e->data.x.client->frame->size.top +
 235                     e->data.x.client->frame->size.bottom;
 236                 px = e->data.x.e->xbutton.x_root;
 237                 py = e->data.x.e->xbutton.y_root;
 238                 corner = pick_corner(px, py, cx, cy, cw, ch);
 239             }
 240             button = e->data.x.e->xbutton.button;
 241             state = e->data.x.e->xbutton.state;
 242         }
 243         context = frame_context(e->data.x.client->frame,
 244                                 e->data.x.e->xbutton.window);
 245
 246         fire_button(MouseAction_Press, context,
 247                     e->data.x.client, e->data.x.e->xbutton.state,
 248                     e->data.x.e->xbutton.button);
 249
 250         if (context == Context_Client) {
 251             /* Replay the event, so it goes to the client*/
 252             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 253             /* Fall through to the release case! */
 254         } else
 255             break;
 256
 257     case Event_X_ButtonRelease:
 258         context = frame_context(e->data.x.client->frame,
 259                                 e->data.x.e->xbutton.window);
 260         if (e->data.x.e->xbutton.button == button) {
 261             /* end drags */
 262             if (drag_used) {
 263                 fire_motion(MouseAction_Motion, context,
 264                             e->data.x.client, state, button,
 265                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 266                 drag = drag_used = FALSE;
 267
 268                 lbutton = 0;
 269             } else {
 270                 /* clicks are only valid if its released over the window */
 271                 int junk;
 272                 Window wjunk;
 273                 guint ujunk, b, w, h;
 274                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 275                              &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 276                 if (e->data.x.e->xbutton.x >= (signed)-b &&
 277                     e->data.x.e->xbutton.y >= (signed)-b &&
 278                     e->data.x.e->xbutton.x < (signed)(w+b) &&
 279                     e->data.x.e->xbutton.y < (signed)(h+b)) {
 280                     click = TRUE;
 281                     /* double clicks happen if there were 2 in a row! */
 282                     if (lbutton == button &&
 283                         e->data.x.e->xbutton.time - dclicktime <= ltime) {
 284                         dclick = TRUE;
 285                         lbutton = 0;
 286                     } else
 287                         lbutton = button;
 288                 } else
 289                     lbutton = 0;
 290             }
 291
 292             button = 0;
 293             state = 0;
 294             ltime = e->data.x.e->xbutton.time;
 295         }
 296         fire_button(MouseAction_Release, context,
 297                     e->data.x.client, e->data.x.e->xbutton.state,
 298                     e->data.x.e->xbutton.button);
 299         if (click)
 300             fire_button(MouseAction_Click, context,
 301                         e->data.x.client, e->data.x.e->xbutton.state,
 302                         e->data.x.e->xbutton.button);
 303         if (dclick)
 304             fire_button(MouseAction_DClick, context,
 305                         e->data.x.client, e->data.x.e->xbutton.state,
 306                         e->data.x.e->xbutton.button);
 307         break;
 308
 309     case Event_X_MotionNotify:
 310         if (button) {
 311             dx = e->data.x.e->xmotion.x_root - px;
 312             dy = e->data.x.e->xmotion.y_root - py;
 313             if (!drag &&
 314                 (ABS(dx) >= threshold || ABS(dy) >= threshold))
 315                 drag = TRUE;
 316             if (drag) {
 317                 context = frame_context(e->data.x.client->frame,
 318                                         e->data.x.e->xbutton.window);
 319                 drag_used = fire_motion(MouseAction_Motion, context,
 320                                         e->data.x.client,
 321                                         state, button, cx, cy, cw, ch, dx, dy,
 322                                         FALSE, corner);
 323             }
 324         }
 325         break;
 326
 327     default:
 328         g_assert_not_reached();
 329     }
 330 }
 331
 332 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 333                Action *action)
 334 {
 335     guint state, button;
 336     Context context;
 337     MouseBinding *b;
 338     GSList *it;
 339
 340     if (!translate_button(buttonstr, &state, &button)) {
 341         g_warning("invalid button '%s'", buttonstr);
 342         return FALSE;
 343     }
 344
 345     contextstr = g_ascii_strdown(contextstr, -1);
 346     context = frame_context_from_string(contextstr);
 347     if (!context) {
 348         g_warning("invalid context '%s'", contextstr);
 349         g_free(contextstr);
 350         return FALSE;
 351     }
 352     g_free(contextstr);
 353
 354     for (it = bound_contexts[context]; it != NULL; it = it->next){
 355         b = it->data;
 356         if (b->state == state && b->button == button) {
 357             /* already bound */
 358             if (b->action[mact] != NULL) {
 359                 g_warning("duplicate binding");
 360                 return FALSE;
 361             }
 362             b->action[mact] = action;
 363             return TRUE;
 364         }
 365     }
 366
 367     grab_all_clients(FALSE);
 368
 369     /* add the binding */
 370     b = g_new0(MouseBinding, 1);
 371     b->state = state;
 372     b->button = button;
 373     b->action[mact] = action;
 374     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 375
 376     grab_all_clients(TRUE);
 377
 378     return TRUE;
 379 }
 380
 381 void plugin_startup()
 382 {
 383     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 384                       Event_X_ButtonPress | Event_X_ButtonRelease |
 385                       Event_X_MotionNotify, (EventHandler)event, NULL);
 386 }
 387
 388 void plugin_shutdown()
 389 {
 390     dispatch_register(0, (EventHandler)event, NULL);
 391
 392     grab_all_clients(FALSE);
 393     clearall();
 394 }