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 {
  53     GSList *it;
  54     ObFrameContext x = context;
  55
  56     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
  57         ObMouseBinding *b = it->data;
  58
  59         if (b->button == button)
  60             return context;
  61     }
  62
  63     switch (context) {
  64     case OB_FRAME_CONTEXT_NONE:
  65     case OB_FRAME_CONTEXT_DESKTOP:
  66     case OB_FRAME_CONTEXT_CLIENT:
  67     case OB_FRAME_CONTEXT_TITLEBAR:
  68     case OB_FRAME_CONTEXT_FRAME:
  69     case OB_FRAME_CONTEXT_MOVE_RESIZE:
  70     case OB_FRAME_CONTEXT_LEFT:
  71     case OB_FRAME_CONTEXT_RIGHT:
  72         break;
  73     case OB_FRAME_CONTEXT_BOTTOM:
  74     case OB_FRAME_CONTEXT_BLCORNER:
  75     case OB_FRAME_CONTEXT_BRCORNER:
  76         x = OB_FRAME_CONTEXT_BOTTOM;
  77         break;
  78     case OB_FRAME_CONTEXT_TLCORNER:
  79     case OB_FRAME_CONTEXT_TRCORNER:
  80     case OB_FRAME_CONTEXT_TOP:
  81     case OB_FRAME_CONTEXT_MAXIMIZE:
  82     case OB_FRAME_CONTEXT_ALLDESKTOPS:
  83     case OB_FRAME_CONTEXT_SHADE:
  84     case OB_FRAME_CONTEXT_ICONIFY:
  85     case OB_FRAME_CONTEXT_ICON:
  86     case OB_FRAME_CONTEXT_CLOSE:
  87         x = OB_FRAME_CONTEXT_TITLEBAR;
  88         break;
  89     case OB_FRAME_NUM_CONTEXTS:
  90         g_assert_not_reached();
  91     }
  92
  93     return x;
  94 }
  95
  96 void mouse_grab_for_client(ObClient *client, gboolean grab)
  97 {
  98     gint i;
  99     GSList *it;
 100
 101     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
 102         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 103             /* grab/ungrab the button */
 104             ObMouseBinding *b = it->data;
 105             Window win;
 106             gint mode;
 107             guint mask;
 108
 109             if (FRAME_CONTEXT(i, client)) {
 110                 win = client->frame->window;
 111                 mode = GrabModeAsync;
 112                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 113             } else if (CLIENT_CONTEXT(i, client)) {
 114                 win = client->frame->plate;
 115                 mode = GrabModeSync; /* this is handled in event */
 116                 mask = ButtonPressMask; /* can't catch more than this with Sync
 117                                            mode the release event is
 118                                            manufactured in event() */
 119             } else continue;
 120
 121             if (grab)
 122                 grab_button_full(b->button, b->state, win, mask, mode,
 123                                  OB_CURSOR_NONE);
 124             else
 125                 ungrab_button(b->button, b->state, win);
 126         }
 127 }
 128
 129 static void grab_all_clients(gboolean grab)
 130 {
 131     GList *it;
 132
 133     for (it = client_list; it; it = g_list_next(it))
 134         mouse_grab_for_client(it->data, grab);
 135 }
 136
 137 void mouse_unbind_all()
 138 {
 139     gint i;
 140     GSList *it;
 141
 142     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
 143         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 144             ObMouseBinding *b = it->data;
 145             gint j;
 146
 147             for (j = 0; j < OB_NUM_MOUSE_ACTIONS; ++j) {
 148                 GSList *it;
 149
 150                 for (it = b->actions[j]; it; it = g_slist_next(it))
 151                     action_unref(it->data);
 152                 g_slist_free(b->actions[j]);
 153             }
 154             g_free(b);
 155         }
 156         g_slist_free(bound_contexts[i]);
 157         bound_contexts[i] = NULL;
 158     }
 159 }
 160
 161 static gboolean fire_binding(ObMouseAction a, ObFrameContext context,
 162                              ObClient *c, guint state,
 163                              guint button, gint x, gint y, Time time)
 164 {
 165     GSList *it;
 166     ObMouseBinding *b;
 167
 168     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 169         b = it->data;
 170         if (b->state == state && b->button == button)
 171             break;
 172     }
 173     /* if not bound, then nothing to do! */
 174     if (it == NULL) return FALSE;
 175
 176     action_run_mouse(b->actions[a], c, context, state, button, x, y, time);
 177     return TRUE;
 178 }
 179
 180 void mouse_event(ObClient *client, XEvent *e)
 181 {
 182     static Time ltime;
 183     static guint button = 0, state = 0, lbutton = 0;
 184     static Window lwindow = None;
 185     static gint px, py, pwx = -1, pwy = -1;
 186
 187     ObFrameContext context;
 188     gboolean click = FALSE;
 189     gboolean dclick = FALSE;
 190
 191     switch (e->type) {
 192     case ButtonPress:
 193         context = frame_context(client, e->xbutton.window,
 194                                 e->xbutton.x, e->xbutton.y);
 195         context = mouse_button_frame_context(context, e->xbutton.button);
 196
 197         px = e->xbutton.x_root;
 198         py = e->xbutton.y_root;
 199         if (!button) pwx = e->xbutton.x;
 200         if (!button) pwy = e->xbutton.y;
 201         button = e->xbutton.button;
 202         state = e->xbutton.state;
 203
 204         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 205                      client, e->xbutton.state,
 206                      e->xbutton.button,
 207                      e->xbutton.x_root, e->xbutton.y_root,
 208                      e->xbutton.time);
 209
 210         /* if the bindings grab the pointer, there won't be a ButtonRelease
 211            event for us */
 212         if (grab_on_pointer())
 213             button = 0;
 214
 215         if (CLIENT_CONTEXT(context, client)) {
 216             /* Replay the event, so it goes to the client*/
 217             XAllowEvents(ob_display, ReplayPointer, event_curtime);
 218             /* Fall through to the release case! */
 219         } else
 220             break;
 221
 222     case ButtonRelease:
 223         /* use where the press occured in the window */
 224         context = frame_context(client, e->xbutton.window, pwx, pwy);
 225         context = mouse_button_frame_context(context, e->xbutton.button);
 226
 227         if (e->xbutton.button == button)
 228             pwx = pwy = -1;
 229
 230         if (e->xbutton.button == button) {
 231             /* clicks are only valid if its released over the window */
 232             gint junk1, junk2;
 233             Window wjunk;
 234             guint ujunk, b, w, h;
 235             /* this can cause errors to occur when the window closes */
 236             xerror_set_ignore(TRUE);
 237             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 238                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 239             xerror_set_ignore(FALSE);
 240             if (junk1) {
 241                 if (e->xbutton.x >= (signed)-b &&
 242                     e->xbutton.y >= (signed)-b &&
 243                     e->xbutton.x < (signed)(w+b) &&
 244                     e->xbutton.y < (signed)(h+b)) {
 245                     click = TRUE;
 246                     /* double clicks happen if there were 2 in a row! */
 247                     if (lbutton == button &&
 248                         lwindow == e->xbutton.window &&
 249                         e->xbutton.time - config_mouse_dclicktime <=
 250                         ltime) {
 251                         dclick = TRUE;
 252                         lbutton = 0;
 253                     } else {
 254                         lbutton = button;
 255                         lwindow = e->xbutton.window;
 256                     }
 257                 } else {
 258                     lbutton = 0;
 259                     lwindow = None;
 260                 }
 261             }
 262
 263             button = 0;
 264             state = 0;
 265             ltime = e->xbutton.time;
 266         }
 267         fire_binding(OB_MOUSE_ACTION_RELEASE, context,
 268                      client, e->xbutton.state,
 269                      e->xbutton.button,
 270                      e->xbutton.x_root,
 271                      e->xbutton.y_root,
 272                      e->xbutton.time);
 273         if (click)
 274             fire_binding(OB_MOUSE_ACTION_CLICK, context,
 275                          client, e->xbutton.state,
 276                          e->xbutton.button,
 277                          e->xbutton.x_root,
 278                          e->xbutton.y_root,
 279                          e->xbutton.time);
 280         if (dclick)
 281             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 282                          client, e->xbutton.state,
 283                          e->xbutton.button,
 284                          e->xbutton.x_root,
 285                          e->xbutton.y_root,
 286                          e->xbutton.time);
 287         break;
 288
 289     case MotionNotify:
 290         if (button) {
 291             context = frame_context(client, e->xmotion.window, pwx, pwy);
 292             context = mouse_button_frame_context(context, button);
 293
 294             if (ABS(e->xmotion.x_root - px) >= config_mouse_threshold ||
 295                 ABS(e->xmotion.y_root - py) >= config_mouse_threshold) {
 296
 297                 /* You can't drag on buttons */
 298                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 299                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 300                     context == OB_FRAME_CONTEXT_SHADE ||
 301                     context == OB_FRAME_CONTEXT_ICONIFY ||
 302                     context == OB_FRAME_CONTEXT_ICON ||
 303                     context == OB_FRAME_CONTEXT_CLOSE)
 304                     break;
 305
 306                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 307                              client, state, button, px, py, e->xmotion.time);
 308                 button = 0;
 309                 state = 0;
 310             }
 311         }
 312         break;
 313
 314     default:
 315         g_assert_not_reached();
 316     }
 317 }
 318
 319 gboolean mouse_bind(const gchar *buttonstr, const gchar *contextstr,
 320                     ObMouseAction mact, ObAction *action)
 321 {
 322     guint state, button;
 323     ObFrameContext context;
 324     ObMouseBinding *b;
 325     GSList *it;
 326
 327     if (!translate_button(buttonstr, &state, &button)) {
 328         g_message(_("Invalid button '%s' in mouse binding"), buttonstr);
 329         return FALSE;
 330     }
 331
 332     context = frame_context_from_string(contextstr);
 333     if (!context) {
 334         g_message(_("Invalid context '%s' in mouse binding"), contextstr);
 335         return FALSE;
 336     }
 337
 338     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 339         b = it->data;
 340         if (b->state == state && b->button == button) {
 341             b->actions[mact] = g_slist_append(b->actions[mact], action);
 342             return TRUE;
 343         }
 344     }
 345
 346     /* when there are no modifiers in the binding, then the action cannot
 347        be interactive */
 348     if (!state && action->data.any.interactive) {
 349         action->data.any.interactive = FALSE;
 350         action->data.inter.final = TRUE;
 351     }
 352
 353     /* add the binding */
 354     b = g_new0(ObMouseBinding, 1);
 355     b->state = state;
 356     b->button = button;
 357     b->actions[mact] = g_slist_append(NULL, action);
 358     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 359
 360     return TRUE;
 361 }
 362
 363 void mouse_startup(gboolean reconfig)
 364 {
 365     grab_all_clients(TRUE);
 366 }
 367
 368 void mouse_shutdown(gboolean reconfig)
 369 {
 370     grab_all_clients(FALSE);
 371     mouse_unbind_all();
 372 }