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) 2003        Ben Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "openbox.h"
  20 #include "config.h"
  21 #include "xerror.h"
  22 #include "action.h"
  23 #include "event.h"
  24 #include "client.h"
  25 #include "prop.h"
  26 #include "grab.h"
  27 #include "frame.h"
  28 #include "translate.h"
  29 #include "mouse.h"
  30 #include <glib.h>
  31
  32 typedef struct {
  33     guint state;
  34     guint button;
  35     GSList *actions[OB_NUM_MOUSE_ACTIONS]; /* lists of Action pointers */
  36 } ObMouseBinding;
  37
  38 #define FRAME_CONTEXT(co, cl) ((cl && cl->type != OB_CLIENT_TYPE_DESKTOP) ? \
  39                                co == OB_FRAME_CONTEXT_FRAME : FALSE)
  40 #define CLIENT_CONTEXT(co, cl) ((cl && cl->type == OB_CLIENT_TYPE_DESKTOP) ? \
  41                                 co == OB_FRAME_CONTEXT_DESKTOP : \
  42                                 co == OB_FRAME_CONTEXT_CLIENT)
  43
  44 /* Array of GSList*s of ObMouseBinding*s. */
  45 static GSList *bound_contexts[OB_FRAME_NUM_CONTEXTS];
  46
  47 ObFrameContext mouse_button_frame_context(ObFrameContext context,
  48                                           guint button)
  49 {
  50     GSList *it;
  51     ObFrameContext x = context;
  52
  53     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
  54         ObMouseBinding *b = it->data;
  55
  56         if (b->button == button)
  57             return context;
  58     }
  59
  60     switch (context) {
  61     case OB_FRAME_CONTEXT_NONE:
  62     case OB_FRAME_CONTEXT_DESKTOP:
  63     case OB_FRAME_CONTEXT_CLIENT:
  64     case OB_FRAME_CONTEXT_TITLEBAR:
  65     case OB_FRAME_CONTEXT_HANDLE:
  66     case OB_FRAME_CONTEXT_FRAME:
  67     case OB_FRAME_CONTEXT_MOVE_RESIZE:
  68         break;
  69     case OB_FRAME_CONTEXT_BLCORNER:
  70     case OB_FRAME_CONTEXT_BRCORNER:
  71         x = OB_FRAME_CONTEXT_HANDLE;
  72         break;
  73     case OB_FRAME_CONTEXT_TLCORNER:
  74     case OB_FRAME_CONTEXT_TRCORNER:
  75     case OB_FRAME_CONTEXT_MAXIMIZE:
  76     case OB_FRAME_CONTEXT_ALLDESKTOPS:
  77     case OB_FRAME_CONTEXT_SHADE:
  78     case OB_FRAME_CONTEXT_ICONIFY:
  79     case OB_FRAME_CONTEXT_ICON:
  80     case OB_FRAME_CONTEXT_CLOSE:
  81         x = OB_FRAME_CONTEXT_TITLEBAR;
  82         break;
  83     case OB_FRAME_NUM_CONTEXTS:
  84         g_assert_not_reached();
  85     }
  86
  87     return x;
  88 }
  89
  90 void mouse_grab_for_client(ObClient *client, gboolean grab)
  91 {
  92     gint i;
  93     GSList *it;
  94
  95     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
  96         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
  97             /* grab/ungrab the button */
  98             ObMouseBinding *b = it->data;
  99             Window win;
 100             gint mode;
 101             guint mask;
 102
 103             if (FRAME_CONTEXT(i, client)) {
 104                 win = client->frame->window;
 105                 mode = GrabModeAsync;
 106                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
 107             } else if (CLIENT_CONTEXT(i, client)) {
 108                 win = client->frame->plate;
 109                 mode = GrabModeSync; /* this is handled in event */
 110                 mask = ButtonPressMask; /* can't catch more than this with Sync
 111                                            mode the release event is
 112                                            manufactured in event() */
 113             } else continue;
 114
 115             if (grab)
 116                 grab_button_full(b->button, b->state, win, mask, mode,
 117                                  OB_CURSOR_NONE);
 118             else
 119                 ungrab_button(b->button, b->state, win);
 120         }
 121 }
 122
 123 static void grab_all_clients(gboolean grab)
 124 {
 125     GList *it;
 126
 127     for (it = client_list; it; it = g_list_next(it))
 128         mouse_grab_for_client(it->data, grab);
 129 }
 130
 131 void mouse_unbind_all()
 132 {
 133     gint i;
 134     GSList *it;
 135
 136     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
 137         for (it = bound_contexts[i]; it; it = g_slist_next(it)) {
 138             ObMouseBinding *b = it->data;
 139             gint j;
 140
 141             for (j = 0; j < OB_NUM_MOUSE_ACTIONS; ++j) {
 142                 GSList *it;
 143
 144                 for (it = b->actions[j]; it; it = g_slist_next(it))
 145                     action_unref(it->data);
 146                 g_slist_free(b->actions[j]);
 147             }
 148             g_free(b);
 149         }
 150         g_slist_free(bound_contexts[i]);
 151         bound_contexts[i] = NULL;
 152     }
 153 }
 154
 155 static gboolean fire_binding(ObMouseAction a, ObFrameContext context,
 156                              ObClient *c, guint state,
 157                              guint button, gint x, gint y)
 158 {
 159     GSList *it;
 160     ObMouseBinding *b;
 161
 162     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 163         b = it->data;
 164         if (b->state == state && b->button == button)
 165             break;
 166     }
 167     /* if not bound, then nothing to do! */
 168     if (it == NULL) return FALSE;
 169
 170     action_run_mouse(b->actions[a], c, context, state, button, x, y);
 171     return TRUE;
 172 }
 173
 174 void mouse_event(ObClient *client, XEvent *e)
 175 {
 176     static Time ltime;
 177     static guint button = 0, state = 0, lbutton = 0;
 178     static Window lwindow = None;
 179     static gint px, py;
 180
 181     ObFrameContext context;
 182     gboolean click = FALSE;
 183     gboolean dclick = FALSE;
 184
 185     switch (e->type) {
 186     case ButtonPress:
 187         context = frame_context(client, e->xany.window);
 188         context = mouse_button_frame_context(context, e->xbutton.button);
 189
 190         px = e->xbutton.x_root;
 191         py = e->xbutton.y_root;
 192         button = e->xbutton.button;
 193         state = e->xbutton.state;
 194
 195         fire_binding(OB_MOUSE_ACTION_PRESS, context,
 196                      client, e->xbutton.state,
 197                      e->xbutton.button,
 198                      e->xbutton.x_root, e->xbutton.y_root);
 199
 200         if (CLIENT_CONTEXT(context, client)) {
 201             /* Replay the event, so it goes to the client*/
 202             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 203             /* Fall through to the release case! */
 204         } else
 205             break;
 206
 207     case ButtonRelease:
 208         context = frame_context(client, e->xany.window);
 209         context = mouse_button_frame_context(context, e->xbutton.button);
 210
 211         if (e->xbutton.button == button) {
 212             /* clicks are only valid if its released over the window */
 213             gint junk1, junk2;
 214             Window wjunk;
 215             guint ujunk, b, w, h;
 216             /* this can cause errors to occur when the window closes */
 217             xerror_set_ignore(TRUE);
 218             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 219                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 220             xerror_set_ignore(FALSE);
 221             if (junk1) {
 222                 if (e->xbutton.x >= (signed)-b &&
 223                     e->xbutton.y >= (signed)-b &&
 224                     e->xbutton.x < (signed)(w+b) &&
 225                     e->xbutton.y < (signed)(h+b)) {
 226                     click = TRUE;
 227                     /* double clicks happen if there were 2 in a row! */
 228                     if (lbutton == button &&
 229                         lwindow == e->xbutton.window &&
 230                         e->xbutton.time - config_mouse_dclicktime <=
 231                         ltime) {
 232                         dclick = TRUE;
 233                         lbutton = 0;
 234                     } else {
 235                         lbutton = button;
 236                         lwindow = e->xbutton.window;
 237                     }
 238                 } else {
 239                     lbutton = 0;
 240                     lwindow = None;
 241                 }
 242             }
 243
 244             button = 0;
 245             state = 0;
 246             ltime = e->xbutton.time;
 247         }
 248         fire_binding(OB_MOUSE_ACTION_RELEASE, context,
 249                      client, e->xbutton.state,
 250                      e->xbutton.button,
 251                      e->xbutton.x_root, e->xbutton.y_root);
 252         if (click)
 253             fire_binding(OB_MOUSE_ACTION_CLICK, context,
 254                          client, e->xbutton.state,
 255                          e->xbutton.button,
 256                          e->xbutton.x_root,
 257                          e->xbutton.y_root);
 258         if (dclick)
 259             fire_binding(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 260                          client, e->xbutton.state,
 261                          e->xbutton.button,
 262                          e->xbutton.x_root,
 263                          e->xbutton.y_root);
 264         break;
 265
 266     case MotionNotify:
 267         if (button) {
 268             context = frame_context(client, e->xany.window);
 269             context = mouse_button_frame_context(context, button);
 270
 271             if (ABS(e->xmotion.x_root - px) >=
 272                 config_mouse_threshold ||
 273                 ABS(e->xmotion.y_root - py) >=
 274                 config_mouse_threshold) {
 275
 276                 /* You can't drag on buttons */
 277                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 278                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 279                     context == OB_FRAME_CONTEXT_SHADE ||
 280                     context == OB_FRAME_CONTEXT_ICONIFY ||
 281                     context == OB_FRAME_CONTEXT_ICON ||
 282                     context == OB_FRAME_CONTEXT_CLOSE)
 283                     break;
 284
 285                 fire_binding(OB_MOUSE_ACTION_MOTION, context,
 286                              client, state, button, px, py);
 287                 button = 0;
 288                 state = 0;
 289             }
 290         }
 291         break;
 292
 293     default:
 294         g_assert_not_reached();
 295     }
 296 }
 297
 298 gboolean mouse_bind(const gchar *buttonstr, const gchar *contextstr,
 299                     ObMouseAction mact, ObAction *action)
 300 {
 301     guint state, button;
 302     ObFrameContext context;
 303     ObMouseBinding *b;
 304     GSList *it;
 305
 306     if (!translate_button(buttonstr, &state, &button)) {
 307         g_warning("invalid button '%s'", buttonstr);
 308         return FALSE;
 309     }
 310
 311     context = frame_context_from_string(contextstr);
 312     if (!context) {
 313         g_warning("invalid context '%s'", contextstr);
 314         return FALSE;
 315     }
 316
 317     for (it = bound_contexts[context]; it; it = g_slist_next(it)) {
 318         b = it->data;
 319         if (b->state == state && b->button == button) {
 320             b->actions[mact] = g_slist_append(b->actions[mact], action);
 321             return TRUE;
 322         }
 323     }
 324
 325     /* when there are no modifiers in the binding, then the action cannot
 326        be interactive */
 327     if (!state && action->data.any.interactive) {
 328         action->data.any.interactive = FALSE;
 329         action->data.inter.final = TRUE;
 330     }
 331
 332     /* add the binding */
 333     b = g_new0(ObMouseBinding, 1);
 334     b->state = state;
 335     b->button = button;
 336     b->actions[mact] = g_slist_append(NULL, action);
 337     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 338
 339     return TRUE;
 340 }
 341
 342 void mouse_startup(gboolean reconfig)
 343 {
 344     grab_all_clients(TRUE);
 345 }
 346
 347 void mouse_shutdown(gboolean reconfig)
 348 {
 349     grab_all_clients(FALSE);
 350     mouse_unbind_all();
 351 }