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_BOTTOM:
  75     case OB_FRAME_CONTEXT_BLCORNER:
  76     case OB_FRAME_CONTEXT_BRCORNER:
  77         x = OB_FRAME_CONTEXT_BOTTOM;
  78         break;
  79     case OB_FRAME_CONTEXT_TLCORNER:
  80     case OB_FRAME_CONTEXT_TRCORNER:
  81     case OB_FRAME_CONTEXT_TOP:
  82     case OB_FRAME_CONTEXT_MAXIMIZE:
  83     case OB_FRAME_CONTEXT_ALLDESKTOPS:
  84     case OB_FRAME_CONTEXT_SHADE:
  85     case OB_FRAME_CONTEXT_ICONIFY:
  86     case OB_FRAME_CONTEXT_ICON:
  87     case OB_FRAME_CONTEXT_CLOSE:
  88         x = OB_FRAME_CONTEXT_TITLEBAR;
  89         break;
  90     case OB_FRAME_NUM_CONTEXTS:
  91         g_assert_not_reached();
  92     }
  93
  94     /* allow for multiple levels of fall-through */
  95     if (x != context)
  96         return mouse_button_frame_context(x, button, state);
  97     else
  98         return x;
  99 }
 100
 101 void mouse_grab_for_client(ObClient *client, gboolean grab)
 102 {
 103     gint i;
 104     GSList *it;
 105
 106     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
 107         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 108             /* grab/ungrab the button */
 109             ObMouseBinding *b = it->data;
 110             Window win;
 111             gint mode;
 112             guint mask;
 113
 114             if (FRAME_CONTEXT(i, client)) {
 115                 win = client->frame->window;
 116                 mode = GrabModeAsync;
 117                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 118             } else if (CLIENT_CONTEXT(i, client)) {
 119                 win = client->frame->plate;
 120                 mode = GrabModeSync; /* this is handled in event */
 121                 mask = ButtonPressMask; /* can't catch more than this with Sync
 122                                            mode the release event is
 123                                            manufactured in event() */
 124             } else continue;
 125
 126             if (grab)
 127                 grab_button_full(b->button, b->state, win, mask, mode,
 128                                  OB_CURSOR_NONE);
 129             else
 130                 ungrab_button(b->button, b->state, win);
 131         }
 132 }
 133
 134 static void grab_all_clients(gboolean grab)
 135 {
 136     GList *it;
 137
 138     for (it = client_list; it; it = g_list_next(it))
 139         mouse_grab_for_client(it->data, grab);
 140 }
 141
 142 void mouse_unbind_all()
 143 {
 144     gint i;
 145     GSList *it;
 146
 147     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
 148         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 149             ObMouseBinding *b = it->data;
 150             gint j;
 151
 152             for (j = 0; j < OB_NUM_MOUSE_ACTIONS; ++j) {
 153                 GSList *it;
 154
 155                 for (it = b->actions[j]; it; it = g_slist_next(it))
 156                     action_unref(it->data);
 157                 g_slist_free(b->actions[j]);
 158             }
 159             g_free(b);
 160         }
 161         g_slist_free(bound_contexts[i]);
 162         bound_contexts[i] = NULL;
 163     }
 164 }
 165
 166 static gboolean fire_binding(ObMouseAction a, ObFrameContext context,
 167                              ObClient *c, guint state,
 168                              guint button, gint x, gint y, Time time)
 169 {
 170     GSList *it;
 171     ObMouseBinding *b;
 172
 173     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 174         b = it->data;
 175         if (b->state == state && b->button == button)
 176             break;
 177     }
 178     /* if not bound, then nothing to do! */
 179     if (it == NULL) return FALSE;
 180
 181     action_run_mouse(b->actions[a], c, context, state, button, x, y, time);
 182     return TRUE;
 183 }
 184
 185 void mouse_event(ObClient *client, XEvent *e)
 186 {
 187     static Time ltime;
 188     static guint button = 0, state = 0, lbutton = 0;
 189     static Window lwindow = None;
 190     static gint px, py, pwx = -1, pwy = -1;
 191
 192     ObFrameContext context;
 193     gboolean click = FALSE;
 194     gboolean dclick = FALSE;
 195
 196     switch (e->type) {
 197     case ButtonPress:
 198         context = frame_context(client, e->xbutton.window,
 199                                 e->xbutton.x, e->xbutton.y);
 200         context = mouse_button_frame_context(context, e->xbutton.button,
 201                                              e->xbutton.state);
 202
 203         px = e->xbutton.x_root;
 204         py = e->xbutton.y_root;
 205         if (!button) pwx = e->xbutton.x;
 206         if (!button) pwy = e->xbutton.y;
 207         button = e->xbutton.button;
 208         state = e->xbutton.state;
 209
 210         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 211                      client, e->xbutton.state,
 212                      e->xbutton.button,
 213                      e->xbutton.x_root, e->xbutton.y_root,
 214                      e->xbutton.time);
 215
 216         /* if the bindings grab the pointer, there won't be a ButtonRelease
 217            event for us */
 218         if (grab_on_pointer())
 219             button = 0;
 220
 221         if (CLIENT_CONTEXT(context, client)) {
 222             /* Replay the event, so it goes to the client*/
 223             XAllowEvents(ob_display, ReplayPointer, event_curtime);
 224             /* Fall through to the release case! */
 225         } else
 226             break;
 227
 228     case ButtonRelease:
 229         /* use where the press occured in the window */
 230         context = frame_context(client, e->xbutton.window, pwx, pwy);
 231         context = mouse_button_frame_context(context, e->xbutton.button,
 232                                              e->xbutton.state);
 233
 234         if (e->xbutton.button == button)
 235             pwx = pwy = -1;
 236
 237         if (e->xbutton.button == button) {
 238             /* clicks are only valid if its released over the window */
 239             gint junk1, junk2;
 240             Window wjunk;
 241             guint ujunk, b, w, h;
 242             /* this can cause errors to occur when the window closes */
 243             xerror_set_ignore(TRUE);
 244             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 245                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 246             xerror_set_ignore(FALSE);
 247             if (junk1) {
 248                 if (e->xbutton.x >= (signed)-b &&
 249                     e->xbutton.y >= (signed)-b &&
 250                     e->xbutton.x < (signed)(w+b) &&
 251                     e->xbutton.y < (signed)(h+b)) {
 252                     click = TRUE;
 253                     /* double clicks happen if there were 2 in a row! */
 254                     if (lbutton == button &&
 255                         lwindow == e->xbutton.window &&
 256                         e->xbutton.time - config_mouse_dclicktime <=
 257                         ltime) {
 258                         dclick = TRUE;
 259                         lbutton = 0;
 260                     } else {
 261                         lbutton = button;
 262                         lwindow = e->xbutton.window;
 263                     }
 264                 } else {
 265                     lbutton = 0;
 266                     lwindow = None;
 267                 }
 268             }
 269
 270             button = 0;
 271             state = 0;
 272             ltime = e->xbutton.time;
 273         }
 274         fire_binding(OB_MOUSE_ACTION_RELEASE, 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 (click)
 281             fire_binding(OB_MOUSE_ACTION_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         if (dclick)
 288             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 289                          client, e->xbutton.state,
 290                          e->xbutton.button,
 291                          e->xbutton.x_root,
 292                          e->xbutton.y_root,
 293                          e->xbutton.time);
 294         break;
 295
 296     case MotionNotify:
 297         if (button) {
 298             context = frame_context(client, e->xmotion.window, pwx, pwy);
 299             context = mouse_button_frame_context(context, button, state);
 300
 301             if (ABS(e->xmotion.x_root - px) >= config_mouse_threshold ||
 302                 ABS(e->xmotion.y_root - py) >= config_mouse_threshold) {
 303
 304                 /* You can't drag on buttons */
 305                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 306                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 307                     context == OB_FRAME_CONTEXT_SHADE ||
 308                     context == OB_FRAME_CONTEXT_ICONIFY ||
 309                     context == OB_FRAME_CONTEXT_ICON ||
 310                     context == OB_FRAME_CONTEXT_CLOSE)
 311                     break;
 312
 313                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 314                              client, state, button, px, py, e->xmotion.time);
 315                 button = 0;
 316                 state = 0;
 317             }
 318         }
 319         break;
 320
 321     default:
 322         g_assert_not_reached();
 323     }
 324 }
 325
 326 gboolean mouse_bind(const gchar *buttonstr, const gchar *contextstr,
 327                     ObMouseAction mact, ObAction *action)
 328 {
 329     guint state, button;
 330     ObFrameContext context;
 331     ObMouseBinding *b;
 332     GSList *it;
 333
 334     if (!translate_button(buttonstr, &state, &button)) {
 335         g_message(_("Invalid button '%s' in mouse binding"), buttonstr);
 336         return FALSE;
 337     }
 338
 339     context = frame_context_from_string(contextstr);
 340     if (!context) {
 341         g_message(_("Invalid context '%s' in mouse binding"), contextstr);
 342         return FALSE;
 343     }
 344
 345     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 346         b = it->data;
 347         if (b->state == state && b->button == button) {
 348             b->actions[mact] = g_slist_append(b->actions[mact], action);
 349             return TRUE;
 350         }
 351     }
 352
 353     /* when there are no modifiers in the binding, then the action cannot
 354        be interactive */
 355     if (!state && action->data.any.interactive) {
 356         action->data.any.interactive = FALSE;
 357         action->data.inter.final = TRUE;
 358     }
 359
 360     /* add the binding */
 361     b = g_new0(ObMouseBinding, 1);
 362     b->state = state;
 363     b->button = button;
 364     b->actions[mact] = g_slist_append(NULL, action);
 365     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 366
 367     return TRUE;
 368 }
 369
 370 void mouse_startup(gboolean reconfig)
 371 {
 372     grab_all_clients(TRUE);
 373 }
 374
 375 void mouse_shutdown(gboolean reconfig)
 376 {
 377     grab_all_clients(FALSE);
 378     mouse_unbind_all();
 379 }