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        Ben 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 <glib.h>
  32
  33 typedef struct {
  34     guint state;
  35     guint button;
  36     GSList *actions[OB_NUM_MOUSE_ACTIONS]; /* lists of Action pointers */
  37 } ObMouseBinding;
  38
  39 #define FRAME_CONTEXT(co, cl) ((cl && cl->type != OB_CLIENT_TYPE_DESKTOP) ? \
  40                                co == OB_FRAME_CONTEXT_FRAME : FALSE)
  41 #define CLIENT_CONTEXT(co, cl) ((cl && cl->type == OB_CLIENT_TYPE_DESKTOP) ? \
  42                                 co == OB_FRAME_CONTEXT_DESKTOP : \
  43                                 co == OB_FRAME_CONTEXT_CLIENT)
  44
  45 /* Array of GSList*s of ObMouseBinding*s. */
  46 static GSList *bound_contexts[OB_FRAME_NUM_CONTEXTS];
  47
  48 ObFrameContext mouse_button_frame_context(ObFrameContext context,
  49                                           guint button)
  50 {
  51     GSList *it;
  52     ObFrameContext x = context;
  53
  54     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
  55         ObMouseBinding *b = it->data;
  56
  57         if (b->button == button)
  58             return context;
  59     }
  60
  61     switch (context) {
  62     case OB_FRAME_CONTEXT_NONE:
  63     case OB_FRAME_CONTEXT_DESKTOP:
  64     case OB_FRAME_CONTEXT_CLIENT:
  65     case OB_FRAME_CONTEXT_TITLEBAR:
  66     case OB_FRAME_CONTEXT_HANDLE:
  67     case OB_FRAME_CONTEXT_FRAME:
  68     case OB_FRAME_CONTEXT_MOVE_RESIZE:
  69         break;
  70     case OB_FRAME_CONTEXT_BLCORNER:
  71     case OB_FRAME_CONTEXT_BRCORNER:
  72         x = OB_FRAME_CONTEXT_HANDLE;
  73         break;
  74     case OB_FRAME_CONTEXT_TLCORNER:
  75     case OB_FRAME_CONTEXT_TRCORNER:
  76     case OB_FRAME_CONTEXT_MAXIMIZE:
  77     case OB_FRAME_CONTEXT_ALLDESKTOPS:
  78     case OB_FRAME_CONTEXT_SHADE:
  79     case OB_FRAME_CONTEXT_ICONIFY:
  80     case OB_FRAME_CONTEXT_ICON:
  81     case OB_FRAME_CONTEXT_CLOSE:
  82         x = OB_FRAME_CONTEXT_TITLEBAR;
  83         break;
  84     case OB_FRAME_NUM_CONTEXTS:
  85         g_assert_not_reached();
  86     }
  87
  88     return x;
  89 }
  90
  91 void mouse_grab_for_client(ObClient *client, gboolean grab)
  92 {
  93     gint i;
  94     GSList *it;
  95
  96     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
  97         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
  98             /* grab/ungrab the button */
  99             ObMouseBinding *b = it->data;
 100             Window win;
 101             gint mode;
 102             guint mask;
 103
 104             if (FRAME_CONTEXT(i, client)) {
 105                 win = client->frame->window;
 106                 mode = GrabModeAsync;
 107                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 108             } else if (CLIENT_CONTEXT(i, client)) {
 109                 win = client->frame->plate;
 110                 mode = GrabModeSync; /* this is handled in event */
 111                 mask = ButtonPressMask; /* can't catch more than this with Sync
 112                                            mode the release event is
 113                                            manufactured in event() */
 114             } else continue;
 115
 116             if (grab)
 117                 grab_button_full(b->button, b->state, win, mask, mode,
 118                                  OB_CURSOR_NONE);
 119             else
 120                 ungrab_button(b->button, b->state, win);
 121         }
 122 }
 123
 124 static void grab_all_clients(gboolean grab)
 125 {
 126     GList *it;
 127
 128     for (it = client_list; it; it = g_list_next(it))
 129         mouse_grab_for_client(it->data, grab);
 130 }
 131
 132 void mouse_unbind_all()
 133 {
 134     gint i;
 135     GSList *it;
 136
 137     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
 138         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 139             ObMouseBinding *b = it->data;
 140             gint j;
 141
 142             for (j = 0; j < OB_NUM_MOUSE_ACTIONS; ++j) {
 143                 GSList *it;
 144
 145                 for (it = b->actions[j]; it; it = g_slist_next(it))
 146                     action_unref(it->data);
 147                 g_slist_free(b->actions[j]);
 148             }
 149             g_free(b);
 150         }
 151         g_slist_free(bound_contexts[i]);
 152         bound_contexts[i] = NULL;
 153     }
 154 }
 155
 156 static gboolean fire_binding(ObMouseAction a, ObFrameContext context,
 157                              ObClient *c, guint state,
 158                              guint button, gint x, gint y)
 159 {
 160     GSList *it;
 161     ObMouseBinding *b;
 162
 163     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 164         b = it->data;
 165         if (b->state == state && b->button == button)
 166             break;
 167     }
 168     /* if not bound, then nothing to do! */
 169     if (it == NULL) return FALSE;
 170
 171     action_run_mouse(b->actions[a], c, context, state, button, x, y);
 172     return TRUE;
 173 }
 174
 175 void mouse_event(ObClient *client, XEvent *e)
 176 {
 177     static Time ltime;
 178     static guint button = 0, state = 0, lbutton = 0;
 179     static Window lwindow = None;
 180     static gint px, py;
 181
 182     ObFrameContext context;
 183     gboolean click = FALSE;
 184     gboolean dclick = FALSE;
 185
 186     switch (e->type) {
 187     case ButtonPress:
 188         context = frame_context(client, e->xany.window);
 189         context = mouse_button_frame_context(context, e->xbutton.button);
 190
 191         px = e->xbutton.x_root;
 192         py = e->xbutton.y_root;
 193         button = e->xbutton.button;
 194         state = e->xbutton.state;
 195
 196         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 197                      client, e->xbutton.state,
 198                      e->xbutton.button,
 199                      e->xbutton.x_root, e->xbutton.y_root);
 200
 201         if (CLIENT_CONTEXT(context, client)) {
 202             /* Replay the event, so it goes to the client*/
 203             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 204             /* Fall through to the release case! */
 205         } else
 206             break;
 207
 208     case ButtonRelease:
 209         context = frame_context(client, e->xany.window);
 210         context = mouse_button_frame_context(context, e->xbutton.button);
 211
 212         if (e->xbutton.button == button) {
 213             /* clicks are only valid if its released over the window */
 214             gint junk1, junk2;
 215             Window wjunk;
 216             guint ujunk, b, w, h;
 217             /* this can cause errors to occur when the window closes */
 218             xerror_set_ignore(TRUE);
 219             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 220                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 221             xerror_set_ignore(FALSE);
 222             if (junk1) {
 223                 if (e->xbutton.x >= (signed)-b &&
 224                     e->xbutton.y >= (signed)-b &&
 225                     e->xbutton.x < (signed)(w+b) &&
 226                     e->xbutton.y < (signed)(h+b)) {
 227                     click = TRUE;
 228                     /* double clicks happen if there were 2 in a row! */
 229                     if (lbutton == button &&
 230                         lwindow == e->xbutton.window &&
 231                         e->xbutton.time - config_mouse_dclicktime <=
 232                         ltime) {
 233                         dclick = TRUE;
 234                         lbutton = 0;
 235                     } else {
 236                         lbutton = button;
 237                         lwindow = e->xbutton.window;
 238                     }
 239                 } else {
 240                     lbutton = 0;
 241                     lwindow = None;
 242                 }
 243             }
 244
 245             button = 0;
 246             state = 0;
 247             ltime = e->xbutton.time;
 248         }
 249         fire_binding(OB_MOUSE_ACTION_RELEASE, context,
 250                      client, e->xbutton.state,
 251                      e->xbutton.button,
 252                      e->xbutton.x_root, e->xbutton.y_root);
 253         if (click)
 254             fire_binding(OB_MOUSE_ACTION_CLICK, context,
 255                          client, e->xbutton.state,
 256                          e->xbutton.button,
 257                          e->xbutton.x_root,
 258                          e->xbutton.y_root);
 259         if (dclick)
 260             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 261                          client, e->xbutton.state,
 262                          e->xbutton.button,
 263                          e->xbutton.x_root,
 264                          e->xbutton.y_root);
 265         break;
 266
 267     case MotionNotify:
 268         if (button) {
 269             context = frame_context(client, e->xany.window);
 270             context = mouse_button_frame_context(context, button);
 271
 272             if (ABS(e->xmotion.x_root - px) >=
 273                 config_mouse_threshold ||
 274                 ABS(e->xmotion.y_root - py) >=
 275                 config_mouse_threshold) {
 276
 277                 /* You can't drag on buttons */
 278                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 279                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 280                     context == OB_FRAME_CONTEXT_SHADE ||
 281                     context == OB_FRAME_CONTEXT_ICONIFY ||
 282                     context == OB_FRAME_CONTEXT_ICON ||
 283                     context == OB_FRAME_CONTEXT_CLOSE)
 284                     break;
 285
 286                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 287                              client, state, button, px, py);
 288                 button = 0;
 289                 state = 0;
 290             }
 291         }
 292         break;
 293
 294     default:
 295         g_assert_not_reached();
 296     }
 297 }
 298
 299 gboolean mouse_bind(const gchar *buttonstr, const gchar *contextstr,
 300                     ObMouseAction mact, ObAction *action)
 301 {
 302     guint state, button;
 303     ObFrameContext context;
 304     ObMouseBinding *b;
 305     GSList *it;
 306
 307     if (!translate_button(buttonstr, &state, &button)) {
 308         g_warning("invalid button '%s'", buttonstr);
 309         return FALSE;
 310     }
 311
 312     context = frame_context_from_string(contextstr);
 313     if (!context) {
 314         g_warning("invalid context '%s'", contextstr);
 315         return FALSE;
 316     }
 317
 318     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 319         b = it->data;
 320         if (b->state == state && b->button == button) {
 321             b->actions[mact] = g_slist_append(b->actions[mact], action);
 322             return TRUE;
 323         }
 324     }
 325
 326     /* when there are no modifiers in the binding, then the action cannot
 327        be interactive */
 328     if (!state && action->data.any.interactive) {
 329         action->data.any.interactive = FALSE;
 330         action->data.inter.final = TRUE;
 331     }
 332
 333     /* add the binding */
 334     b = g_new0(ObMouseBinding, 1);
 335     b->state = state;
 336     b->button = button;
 337     b->actions[mact] = g_slist_append(NULL, action);
 338     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 339
 340     return TRUE;
 341 }
 342
 343 void mouse_startup(gboolean reconfig)
 344 {
 345     grab_all_clients(TRUE);
 346 }
 347
 348 void mouse_shutdown(gboolean reconfig)
 349 {
 350     grab_all_clients(FALSE);
 351     mouse_unbind_all();
 352 }