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