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