Dogcows Code - chaz/openbox/blob - openbox/mouse.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    mouse.c for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "openbox.h"
  21 #include "config.h"
  22 #include "xerror.h"
  23 #include "actions.h"
  24 #include "event.h"
  25 #include "client.h"
  26 #include "prop.h"
  27 #include "grab.h"
  28 #include "frame.h"
  29 #include "translate.h"
  30 #include "mouse.h"
  31 #include "gettext.h"
  32
  33 #include <glib.h>
  34
  35 typedef struct {
  36     guint state;
  37     guint button;
  38     GSList *actions[OB_NUM_MOUSE_ACTIONS]; /* lists of Action pointers */
  39 } ObMouseBinding;
  40
  41 #define FRAME_CONTEXT(co, cl) ((cl && cl->type != OB_CLIENT_TYPE_DESKTOP) ? \
  42                                co == OB_FRAME_CONTEXT_FRAME : FALSE)
  43 #define CLIENT_CONTEXT(co, cl) ((cl && cl->type == OB_CLIENT_TYPE_DESKTOP) ? \
  44                                 co == OB_FRAME_CONTEXT_DESKTOP : \
  45                                 co == OB_FRAME_CONTEXT_CLIENT)
  46
  47 /* Array of GSList*s of ObMouseBinding*s. */
  48 static GSList *bound_contexts[OB_FRAME_NUM_CONTEXTS];
  49
  50 ObFrameContext mouse_button_frame_context(ObFrameContext context,
  51                                           guint button,
  52                                           guint state)
  53 {
  54     GSList *it;
  55     ObFrameContext x = context;
  56
  57     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
  58         ObMouseBinding *b = it->data;
  59
  60         if (b->button == button && b->state == state)
  61             return context;
  62     }
  63
  64     switch (context) {
  65     case OB_FRAME_CONTEXT_NONE:
  66     case OB_FRAME_CONTEXT_DESKTOP:
  67     case OB_FRAME_CONTEXT_CLIENT:
  68     case OB_FRAME_CONTEXT_TITLEBAR:
  69     case OB_FRAME_CONTEXT_FRAME:
  70     case OB_FRAME_CONTEXT_MOVE_RESIZE:
  71     case OB_FRAME_CONTEXT_LEFT:
  72     case OB_FRAME_CONTEXT_RIGHT:
  73         break;
  74     case OB_FRAME_CONTEXT_ROOT:
  75         x = OB_FRAME_CONTEXT_DESKTOP;
  76         break;
  77     case OB_FRAME_CONTEXT_BOTTOM:
  78     case OB_FRAME_CONTEXT_BLCORNER:
  79     case OB_FRAME_CONTEXT_BRCORNER:
  80         x = OB_FRAME_CONTEXT_BOTTOM;
  81         break;
  82     case OB_FRAME_CONTEXT_TLCORNER:
  83     case OB_FRAME_CONTEXT_TRCORNER:
  84     case OB_FRAME_CONTEXT_TOP:
  85     case OB_FRAME_CONTEXT_MAXIMIZE:
  86     case OB_FRAME_CONTEXT_ALLDESKTOPS:
  87     case OB_FRAME_CONTEXT_SHADE:
  88     case OB_FRAME_CONTEXT_ICONIFY:
  89     case OB_FRAME_CONTEXT_ICON:
  90     case OB_FRAME_CONTEXT_CLOSE:
  91         x = OB_FRAME_CONTEXT_TITLEBAR;
  92         break;
  93     case OB_FRAME_NUM_CONTEXTS:
  94         g_assert_not_reached();
  95     }
  96
  97     /* allow for multiple levels of fall-through */
  98     if (x != context)
  99         return mouse_button_frame_context(x, button, state);
 100     else
 101         return x;
 102 }
 103
 104 void mouse_grab_for_client(ObClient *client, gboolean grab)
 105 {
 106     gint i;
 107     GSList *it;
 108
 109     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
 110         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 111             /* grab/ungrab the button */
 112             ObMouseBinding *b = it->data;
 113             Window win;
 114             gint mode;
 115             guint mask;
 116
 117             if (FRAME_CONTEXT(i, client)) {
 118                 win = client->frame->window;
 119                 mode = GrabModeAsync;
 120                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 121             } else if (CLIENT_CONTEXT(i, client)) {
 122                 win = client->window;
 123                 mode = GrabModeSync; /* this is handled in event */
 124                 mask = ButtonPressMask; /* can't catch more than this with Sync
 125                                            mode the release event is
 126                                            manufactured in event() */
 127             } else continue;
 128
 129             if (grab)
 130                 grab_button_full(b->button, b->state, win, mask, mode,
 131                                  OB_CURSOR_NONE);
 132             else
 133                 ungrab_button(b->button, b->state, win);
 134         }
 135 }
 136
 137 static void grab_all_clients(gboolean grab)
 138 {
 139     GList *it;
 140
 141     for (it = client_list; it; it = g_list_next(it))
 142         mouse_grab_for_client(it->data, grab);
 143 }
 144
 145 void mouse_unbind_all(void)
 146 {
 147     gint i;
 148     GSList *it;
 149
 150     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
 151         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 152             ObMouseBinding *b = it->data;
 153             gint j;
 154
 155             for (j = 0; j < OB_NUM_MOUSE_ACTIONS; ++j) {
 156                 GSList *jt;
 157
 158                 for (jt = b->actions[j]; jt; jt = g_slist_next(jt))
 159                     actions_act_unref(jt->data);
 160                 g_slist_free(b->actions[j]);
 161             }
 162             g_free(b);
 163         }
 164         g_slist_free(bound_contexts[i]);
 165         bound_contexts[i] = NULL;
 166     }
 167 }
 168
 169 static ObUserAction mouse_action_to_user_action(ObMouseAction a)
 170 {
 171     switch (a) {
 172     case OB_MOUSE_ACTION_PRESS: return OB_USER_ACTION_MOUSE_PRESS;
 173     case OB_MOUSE_ACTION_RELEASE: return OB_USER_ACTION_MOUSE_RELEASE;
 174     case OB_MOUSE_ACTION_CLICK: return OB_USER_ACTION_MOUSE_CLICK;
 175     case OB_MOUSE_ACTION_DOUBLE_CLICK:
 176         return OB_USER_ACTION_MOUSE_DOUBLE_CLICK;
 177     case OB_MOUSE_ACTION_MOTION: return OB_USER_ACTION_MOUSE_MOTION;
 178     default:
 179         g_assert_not_reached();
 180     }
 181 }
 182
 183 static gboolean fire_binding(ObMouseAction a, ObFrameContext context,
 184                              ObClient *c, guint state,
 185                              guint button, gint x, gint y)
 186 {
 187     GSList *it;
 188     ObMouseBinding *b;
 189
 190     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 191         b = it->data;
 192         if (b->state == state && b->button == button)
 193             break;
 194     }
 195     /* if not bound, then nothing to do! */
 196     if (it == NULL) return FALSE;
 197
 198     actions_run_acts(b->actions[a], mouse_action_to_user_action(a),
 199                      state, x, y, button, context, c);
 200     return TRUE;
 201 }
 202
 203 void mouse_event(ObClient *client, XEvent *e)
 204 {
 205     static Time ltime;
 206     static guint button = 0, state = 0, lbutton = 0;
 207     static Window lwindow = None;
 208     static gint px, py, pwx = -1, pwy = -1;
 209
 210     ObFrameContext context;
 211     gboolean click = FALSE;
 212     gboolean dclick = FALSE;
 213
 214     switch (e->type) {
 215     case ButtonPress:
 216         context = frame_context(client, e->xbutton.window,
 217                                 e->xbutton.x, e->xbutton.y);
 218         context = mouse_button_frame_context(context, e->xbutton.button,
 219                                              e->xbutton.state);
 220
 221         px = e->xbutton.x_root;
 222         py = e->xbutton.y_root;
 223         if (!button) pwx = e->xbutton.x;
 224         if (!button) pwy = e->xbutton.y;
 225         button = e->xbutton.button;
 226         state = e->xbutton.state;
 227
 228         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 229                      client, e->xbutton.state,
 230                      e->xbutton.button,
 231                      e->xbutton.x_root, e->xbutton.y_root);
 232
 233         /* if the bindings grab the pointer, there won't be a ButtonRelease
 234            event for us */
 235         if (grab_on_pointer())
 236             button = 0;
 237
 238         if (CLIENT_CONTEXT(context, client)) {
 239             /* Replay the event, so it goes to the client*/
 240             XAllowEvents(ob_display, ReplayPointer, event_curtime);
 241             /* Fall through to the release case! */
 242         } else
 243             break;
 244
 245     case ButtonRelease:
 246         /* use where the press occured in the window */
 247         context = frame_context(client, e->xbutton.window, pwx, pwy);
 248         context = mouse_button_frame_context(context, e->xbutton.button,
 249                                              e->xbutton.state);
 250
 251         if (e->xbutton.button == button)
 252             pwx = pwy = -1;
 253
 254         if (e->xbutton.button == button) {
 255             /* clicks are only valid if its released over the window */
 256             gint junk1, junk2;
 257             Window wjunk;
 258             guint ujunk, b, w, h;
 259             /* this can cause errors to occur when the window closes */
 260             xerror_set_ignore(TRUE);
 261             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 262                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 263             xerror_set_ignore(FALSE);
 264             if (junk1) {
 265                 if (e->xbutton.x >= (signed)-b &&
 266                     e->xbutton.y >= (signed)-b &&
 267                     e->xbutton.x < (signed)(w+b) &&
 268                     e->xbutton.y < (signed)(h+b)) {
 269                     click = TRUE;
 270                     /* double clicks happen if there were 2 in a row! */
 271                     if (lbutton == button &&
 272                         lwindow == e->xbutton.window &&
 273                         e->xbutton.time - config_mouse_dclicktime <=
 274                         ltime) {
 275                         dclick = TRUE;
 276                         lbutton = 0;
 277                     } else {
 278                         lbutton = button;
 279                         lwindow = e->xbutton.window;
 280                     }
 281                 } else {
 282                     lbutton = 0;
 283                     lwindow = None;
 284                 }
 285             }
 286
 287             button = 0;
 288             state = 0;
 289             ltime = e->xbutton.time;
 290         }
 291         fire_binding(OB_MOUSE_ACTION_RELEASE, context,
 292                      client, e->xbutton.state,
 293                      e->xbutton.button,
 294                      e->xbutton.x_root,
 295                      e->xbutton.y_root);
 296         if (click)
 297             fire_binding(OB_MOUSE_ACTION_CLICK, context,
 298                          client, e->xbutton.state,
 299                          e->xbutton.button,
 300                          e->xbutton.x_root,
 301                          e->xbutton.y_root);
 302         if (dclick)
 303             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 304                          client, e->xbutton.state,
 305                          e->xbutton.button,
 306                          e->xbutton.x_root,
 307                          e->xbutton.y_root);
 308         break;
 309
 310     case MotionNotify:
 311         if (button) {
 312             context = frame_context(client, e->xmotion.window, pwx, pwy);
 313             context = mouse_button_frame_context(context, button, state);
 314
 315             if (ABS(e->xmotion.x_root - px) >= config_mouse_threshold ||
 316                 ABS(e->xmotion.y_root - py) >= config_mouse_threshold) {
 317
 318                 /* You can't drag on buttons */
 319                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 320                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 321                     context == OB_FRAME_CONTEXT_SHADE ||
 322                     context == OB_FRAME_CONTEXT_ICONIFY ||
 323                     context == OB_FRAME_CONTEXT_ICON ||
 324                     context == OB_FRAME_CONTEXT_CLOSE)
 325                     break;
 326
 327                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 328                              client, state, button, px, py);
 329                 button = 0;
 330                 state = 0;
 331             }
 332         }
 333         break;
 334
 335     default:
 336         g_assert_not_reached();
 337     }
 338 }
 339
 340 gboolean mouse_bind(const gchar *buttonstr, const gchar *contextstr,
 341                     ObMouseAction mact, ObActionsAct *action)
 342 {
 343     guint state, button;
 344     ObFrameContext context;
 345     ObMouseBinding *b;
 346     GSList *it;
 347
 348     if (!translate_button(buttonstr, &state, &button)) {
 349         g_message(_("Invalid button '%s' in mouse binding"), buttonstr);
 350         return FALSE;
 351     }
 352
 353     context = frame_context_from_string(contextstr);
 354     if (!context) {
 355         g_message(_("Invalid context '%s' in mouse binding"), contextstr);
 356         return FALSE;
 357     }
 358
 359     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 360         b = it->data;
 361         if (b->state == state && b->button == button) {
 362             b->actions[mact] = g_slist_append(b->actions[mact], action);
 363             return TRUE;
 364         }
 365     }
 366
 367     /* add the binding */
 368     b = g_new0(ObMouseBinding, 1);
 369     b->state = state;
 370     b->button = button;
 371     b->actions[mact] = g_slist_append(NULL, action);
 372     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 373
 374     return TRUE;
 375 }
 376
 377 void mouse_startup(gboolean reconfig)
 378 {
 379     grab_all_clients(TRUE);
 380 }
 381
 382 void mouse_shutdown(gboolean reconfig)
 383 {
 384     grab_all_clients(FALSE);
 385     mouse_unbind_all();
 386 }