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 "action.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()
 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 *it;
 157
 158                 for (it = b->actions[j]; it; it = g_slist_next(it))
 159                     action_unref(it->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 gboolean fire_binding(ObMouseAction a, ObFrameContext context,
 170                              ObClient *c, guint state,
 171                              guint button, gint x, gint y, Time time)
 172 {
 173     GSList *it;
 174     ObMouseBinding *b;
 175
 176     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 177         b = it->data;
 178         if (b->state == state && b->button == button)
 179             break;
 180     }
 181     /* if not bound, then nothing to do! */
 182     if (it == NULL) return FALSE;
 183
 184     action_run_mouse(b->actions[a], c, context, state, button, x, y, time);
 185     return TRUE;
 186 }
 187
 188 void mouse_event(ObClient *client, XEvent *e)
 189 {
 190     static Time ltime;
 191     static guint button = 0, state = 0, lbutton = 0;
 192     static Window lwindow = None;
 193     static gint px, py, pwx = -1, pwy = -1;
 194
 195     ObFrameContext context;
 196     gboolean click = FALSE;
 197     gboolean dclick = FALSE;
 198
 199     switch (e->type) {
 200     case ButtonPress:
 201         context = frame_context(client, e->xbutton.window,
 202                                 e->xbutton.x, e->xbutton.y);
 203         context = mouse_button_frame_context(context, e->xbutton.button,
 204                                              e->xbutton.state);
 205
 206         px = e->xbutton.x_root;
 207         py = e->xbutton.y_root;
 208         if (!button) pwx = e->xbutton.x;
 209         if (!button) pwy = e->xbutton.y;
 210         button = e->xbutton.button;
 211         state = e->xbutton.state;
 212
 213         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 214                      client, e->xbutton.state,
 215                      e->xbutton.button,
 216                      e->xbutton.x_root, e->xbutton.y_root,
 217                      e->xbutton.time);
 218
 219         /* if the bindings grab the pointer, there won't be a ButtonRelease
 220            event for us */
 221         if (grab_on_pointer())
 222             button = 0;
 223
 224         if (CLIENT_CONTEXT(context, client)) {
 225             /* Replay the event, so it goes to the client*/
 226             XAllowEvents(ob_display, ReplayPointer, event_curtime);
 227             /* Fall through to the release case! */
 228         } else
 229             break;
 230
 231     case ButtonRelease:
 232         /* use where the press occured in the window */
 233         context = frame_context(client, e->xbutton.window, pwx, pwy);
 234         context = mouse_button_frame_context(context, e->xbutton.button,
 235                                              e->xbutton.state);
 236
 237         if (e->xbutton.button == button)
 238             pwx = pwy = -1;
 239
 240         if (e->xbutton.button == button) {
 241             /* clicks are only valid if its released over the window */
 242             gint junk1, junk2;
 243             Window wjunk;
 244             guint ujunk, b, w, h;
 245             /* this can cause errors to occur when the window closes */
 246             xerror_set_ignore(TRUE);
 247             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 248                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 249             xerror_set_ignore(FALSE);
 250             if (junk1) {
 251                 if (e->xbutton.x >= (signed)-b &&
 252                     e->xbutton.y >= (signed)-b &&
 253                     e->xbutton.x < (signed)(w+b) &&
 254                     e->xbutton.y < (signed)(h+b)) {
 255                     click = TRUE;
 256                     /* double clicks happen if there were 2 in a row! */
 257                     if (lbutton == button &&
 258                         lwindow == e->xbutton.window &&
 259                         e->xbutton.time - config_mouse_dclicktime <=
 260                         ltime) {
 261                         dclick = TRUE;
 262                         lbutton = 0;
 263                     } else {
 264                         lbutton = button;
 265                         lwindow = e->xbutton.window;
 266                     }
 267                 } else {
 268                     lbutton = 0;
 269                     lwindow = None;
 270                 }
 271             }
 272
 273             button = 0;
 274             state = 0;
 275             ltime = e->xbutton.time;
 276         }
 277         fire_binding(OB_MOUSE_ACTION_RELEASE, context,
 278                      client, e->xbutton.state,
 279                      e->xbutton.button,
 280                      e->xbutton.x_root,
 281                      e->xbutton.y_root,
 282                      e->xbutton.time);
 283         if (click)
 284             fire_binding(OB_MOUSE_ACTION_CLICK, context,
 285                          client, e->xbutton.state,
 286                          e->xbutton.button,
 287                          e->xbutton.x_root,
 288                          e->xbutton.y_root,
 289                          e->xbutton.time);
 290         if (dclick)
 291             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 292                          client, e->xbutton.state,
 293                          e->xbutton.button,
 294                          e->xbutton.x_root,
 295                          e->xbutton.y_root,
 296                          e->xbutton.time);
 297         break;
 298
 299     case MotionNotify:
 300         if (button) {
 301             context = frame_context(client, e->xmotion.window, pwx, pwy);
 302             context = mouse_button_frame_context(context, button, state);
 303
 304             if (ABS(e->xmotion.x_root - px) >= config_mouse_threshold ||
 305                 ABS(e->xmotion.y_root - py) >= config_mouse_threshold) {
 306
 307                 /* You can't drag on buttons */
 308                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 309                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 310                     context == OB_FRAME_CONTEXT_SHADE ||
 311                     context == OB_FRAME_CONTEXT_ICONIFY ||
 312                     context == OB_FRAME_CONTEXT_ICON ||
 313                     context == OB_FRAME_CONTEXT_CLOSE)
 314                     break;
 315
 316                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 317                              client, state, button, px, py, e->xmotion.time);
 318                 button = 0;
 319                 state = 0;
 320             }
 321         }
 322         break;
 323
 324     default:
 325         g_assert_not_reached();
 326     }
 327 }
 328
 329 gboolean mouse_bind(const gchar *buttonstr, const gchar *contextstr,
 330                     ObMouseAction mact, ObAction *action)
 331 {
 332     guint state, button;
 333     ObFrameContext context;
 334     ObMouseBinding *b;
 335     GSList *it;
 336
 337     if (!translate_button(buttonstr, &state, &button)) {
 338         g_message(_("Invalid button '%s' in mouse binding"), buttonstr);
 339         return FALSE;
 340     }
 341
 342     context = frame_context_from_string(contextstr);
 343     if (!context) {
 344         g_message(_("Invalid context '%s' in mouse binding"), contextstr);
 345         return FALSE;
 346     }
 347
 348     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 349         b = it->data;
 350         if (b->state == state && b->button == button) {
 351             b->actions[mact] = g_slist_append(b->actions[mact], action);
 352             return TRUE;
 353         }
 354     }
 355
 356     /* when there are no modifiers in the binding, then the action cannot
 357        be interactive */
 358     if (!state && action->data.any.interactive) {
 359         action->data.any.interactive = FALSE;
 360         action->data.inter.final = TRUE;
 361     }
 362
 363     /* add the binding */
 364     b = g_new0(ObMouseBinding, 1);
 365     b->state = state;
 366     b->button = button;
 367     b->actions[mact] = g_slist_append(NULL, action);
 368     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 369
 370     return TRUE;
 371 }
 372
 373 void mouse_startup(gboolean reconfig)
 374 {
 375     grab_all_clients(TRUE);
 376 }
 377
 378 void mouse_shutdown(gboolean reconfig)
 379 {
 380     grab_all_clients(FALSE);
 381     mouse_unbind_all();
 382 }