openbox/mouse.c

   1 #include "openbox.h"
   2 #include "config.h"
   3 #include "xerror.h"
   4 #include "action.h"
   5 #include "event.h"
   6 #include "client.h"
   7 #include "prop.h"
   8 #include "grab.h"
   9 #include "frame.h"
  10 #include "translate.h"
  11 #include "mouse.h"
  12 #include "keyboard.h"
  13 #include <glib.h>
  14
  15 typedef struct {
  16     guint state;
  17     guint button;
  18     GSList *actions[OB_MOUSE_NUM_ACTIONS]; /* lists of Action pointers */
  19 } ObMouseBinding;
  20
  21 #define FRAME_CONTEXT(co, cl) ((cl && cl->type != OB_CLIENT_TYPE_DESKTOP) ? \
  22                                co == OB_FRAME_CONTEXT_FRAME : FALSE)
  23 #define CLIENT_CONTEXT(co, cl) ((cl && cl->type == OB_CLIENT_TYPE_DESKTOP) ? \
  24                                 co == OB_FRAME_CONTEXT_DESKTOP : \
  25                                 co == OB_FRAME_CONTEXT_CLIENT)
  26
  27 /* Array of GSList*s of PointerBinding*s. */
  28 static GSList *bound_contexts[OB_FRAME_NUM_CONTEXTS];
  29
  30 void mouse_grab_for_client(ObClient *client, gboolean grab)
  31 {
  32     int i;
  33     GSList *it;
  34
  35     for (i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i)
  36         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  37             /* grab/ungrab the button */
  38             ObMouseBinding *b = it->data;
  39             Window win;
  40             int mode;
  41             unsigned int mask;
  42
  43             if (FRAME_CONTEXT(i, client)) {
  44                 win = client->frame->window;
  45                 mode = GrabModeAsync;
  46                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  47             } else if (CLIENT_CONTEXT(i, client)) {
  48                 win = client->frame->plate;
  49                 mode = GrabModeSync; /* this is handled in event */
  50                 mask = ButtonPressMask; /* can't catch more than this with Sync
  51                                            mode the release event is
  52                                            manufactured in event() */
  53             } else continue;
  54
  55             if (grab)
  56                 grab_button_full(b->button, b->state, win, mask, mode, None);
  57             else
  58                 ungrab_button(b->button, b->state, win);
  59         }
  60 }
  61
  62 static void grab_all_clients(gboolean grab)
  63 {
  64     GList *it;
  65
  66     for (it = client_list; it != NULL; it = it->next)
  67         mouse_grab_for_client(it->data, grab);
  68 }
  69
  70 static void clearall()
  71 {
  72     int i;
  73     GSList *it;
  74
  75     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
  76         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  77             int j;
  78
  79             ObMouseBinding *b = it->data;
  80             for (j = 0; j < OB_MOUSE_NUM_ACTIONS; ++j) {
  81                 GSList *it;
  82                 for (it = b->actions[j]; it; it = it->next) {
  83                     action_free(it->data);
  84                 }
  85                 g_slist_free(b->actions[j]);
  86             }
  87             g_free(b);
  88         }
  89         g_slist_free(bound_contexts[i]);
  90         bound_contexts[i] = NULL;
  91     }
  92 }
  93
  94 static gboolean fire_button(ObMouseAction a, ObFrameContext context,
  95                             ObClient *c, guint state,
  96                             guint button, int x, int y)
  97 {
  98     GSList *it;
  99     ObMouseBinding *b;
 100
 101     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 102         b = it->data;
 103         if (b->state == state && b->button == button)
 104             break;
 105     }
 106     /* if not bound, then nothing to do! */
 107     if (it == NULL) return FALSE;
 108
 109     for (it = b->actions[a]; it; it = it->next) {
 110         ObAction *act = it->data;
 111         if (act->func != NULL) {
 112             act->data.any.c = c;
 113
 114             g_assert(act->func != action_moveresize);
 115
 116             if (act->func == action_showmenu) {
 117                 act->data.showmenu.x = x;
 118                 act->data.showmenu.y = y;
 119             }
 120
 121             if (act->data.any.interactive) {
 122                 act->data.inter.cancel = FALSE;
 123                 act->data.inter.final = FALSE;
 124                 keyboard_interactive_grab(state, c, context, act);
 125             }
 126
 127             act->func(&act->data);
 128         }
 129     }
 130     return TRUE;
 131 }
 132
 133 static gboolean fire_motion(ObMouseAction a, ObFrameContext context,
 134                             ObClient *c, guint state, guint button,
 135                             int x_root, int y_root, guint32 corner)
 136 {
 137     GSList *it;
 138     ObMouseBinding *b;
 139
 140     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 141         b = it->data;
 142         if (b->state == state && b->button == button)
 143                 break;
 144     }
 145     /* if not bound, then nothing to do! */
 146     if (it == NULL) return FALSE;
 147
 148     for (it = b->actions[a]; it; it = it->next) {
 149         ObAction *act = it->data;
 150         if (act->func != NULL) {
 151             act->data.any.c = c;
 152
 153             if (act->func == action_moveresize) {
 154                 act->data.moveresize.x = x_root;
 155                 act->data.moveresize.y = y_root;
 156                 act->data.moveresize.button = button;
 157                 if (!(act->data.moveresize.corner ==
 158                       prop_atoms.net_wm_moveresize_move ||
 159                       act->data.moveresize.corner ==
 160                       prop_atoms.net_wm_moveresize_move_keyboard ||
 161                       act->data.moveresize.corner ==
 162                       prop_atoms.net_wm_moveresize_size_keyboard))
 163                     act->data.moveresize.corner = corner;
 164             } else
 165                 g_assert_not_reached();
 166
 167             act->func(&act->data);
 168         }
 169     }
 170     return TRUE;
 171 }
 172
 173 static guint32 pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 174 {
 175     if (x - cx < cw / 2) {
 176         if (y - cy < ch / 2)
 177             return prop_atoms.net_wm_moveresize_size_topleft;
 178         else
 179             return prop_atoms.net_wm_moveresize_size_bottomleft;
 180     } else {
 181         if (y - cy < ch / 2)
 182             return prop_atoms.net_wm_moveresize_size_topright;
 183         else
 184             return prop_atoms.net_wm_moveresize_size_bottomright;
 185     }
 186 }
 187
 188 void mouse_event(ObClient *client, ObFrameContext context, XEvent *e)
 189 {
 190     static Time ltime;
 191     static guint button = 0, state = 0, lbutton = 0;
 192
 193     static Window lwindow = None;
 194     static int px, py;
 195     gboolean click = FALSE;
 196     gboolean dclick = FALSE;
 197
 198     switch (e->type) {
 199     case ButtonPress:
 200         px = e->xbutton.x_root;
 201         py = e->xbutton.y_root;
 202         button = e->xbutton.button;
 203         state = e->xbutton.state;
 204
 205         fire_button(OB_MOUSE_ACTION_PRESS, context,
 206                     client, e->xbutton.state,
 207                     e->xbutton.button,
 208                     e->xbutton.x_root, e->xbutton.y_root);
 209
 210         if (CLIENT_CONTEXT(context, client)) {
 211             /* Replay the event, so it goes to the client*/
 212             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 213             /* Fall through to the release case! */
 214         } else
 215             break;
 216
 217     case ButtonRelease:
 218         if (e->xbutton.button == button) {
 219             /* clicks are only valid if its released over the window */
 220             int junk1, junk2;
 221             Window wjunk;
 222             guint ujunk, b, w, h;
 223             xerror_set_ignore(TRUE);
 224             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 225                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 226             xerror_set_ignore(FALSE);
 227             if (junk1) {
 228                 if (e->xbutton.x >= (signed)-b &&
 229                     e->xbutton.y >= (signed)-b &&
 230                     e->xbutton.x < (signed)(w+b) &&
 231                     e->xbutton.y < (signed)(h+b)) {
 232                     click = TRUE;
 233                     /* double clicks happen if there were 2 in a row! */
 234                     if (lbutton == button &&
 235                         lwindow == e->xbutton.window &&
 236                         e->xbutton.time - config_mouse_dclicktime <=
 237                         ltime) {
 238                         dclick = TRUE;
 239                         lbutton = 0;
 240                     } else {
 241                         lbutton = button;
 242                         lwindow = e->xbutton.window;
 243                     }
 244                 } else {
 245                     lbutton = 0;
 246                     lwindow = None;
 247                 }
 248             }
 249
 250             button = 0;
 251             state = 0;
 252             ltime = e->xbutton.time;
 253         }
 254         fire_button(OB_MOUSE_ACTION_RELEASE, context,
 255                     client, e->xbutton.state,
 256                     e->xbutton.button,
 257                     e->xbutton.x_root, e->xbutton.y_root);
 258         if (click)
 259             fire_button(OB_MOUSE_ACTION_CLICK, context,
 260                         client, e->xbutton.state,
 261                         e->xbutton.button,
 262                         e->xbutton.x_root,
 263                         e->xbutton.y_root);
 264         if (dclick)
 265             fire_button(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 266                         client, e->xbutton.state,
 267                         e->xbutton.button,
 268                         e->xbutton.x_root,
 269                         e->xbutton.y_root);
 270         break;
 271
 272     case MotionNotify:
 273         if (button) {
 274             if (ABS(e->xmotion.x_root - px) >=
 275                 config_mouse_threshold ||
 276                 ABS(e->xmotion.y_root - py) >=
 277                 config_mouse_threshold) {
 278                 guint32 corner;
 279
 280                 /* You can't drag on buttons */
 281                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 282                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 283                     context == OB_FRAME_CONTEXT_SHADE ||
 284                     context == OB_FRAME_CONTEXT_ICONIFY ||
 285                     context == OB_FRAME_CONTEXT_ICON ||
 286                     context == OB_FRAME_CONTEXT_CLOSE)
 287                     break;
 288
 289                 if (!client)
 290                     corner = prop_atoms.net_wm_moveresize_size_bottomright;
 291                 else
 292                     corner =
 293                         pick_corner(e->xmotion.x_root,
 294                                     e->xmotion.y_root,
 295                                     client->frame->area.x,
 296                                     client->frame->area.y,
 297                                     /* use the client size because the frame
 298                                        can be differently sized (shaded
 299                                        windows) and we want this based on the
 300                                        clients size */
 301                                     client->area.width +
 302                                     client->frame->size.left +
 303                                     client->frame->size.right,
 304                                     client->area.height +
 305                                     client->frame->size.top +
 306                                     client->frame->size.bottom);
 307                 fire_motion(OB_MOUSE_ACTION_MOTION, context,
 308                             client, state, button, px, py, corner);
 309                 button = 0;
 310                 state = 0;
 311             }
 312         }
 313         break;
 314
 315     default:
 316         g_assert_not_reached();
 317     }
 318 }
 319
 320 gboolean mouse_bind(char *buttonstr, char *contextstr, ObMouseAction mact,
 321                     ObAction *action)
 322 {
 323     guint state, button;
 324     ObFrameContext context;
 325     ObMouseBinding *b;
 326     GSList *it;
 327
 328     if (!translate_button(buttonstr, &state, &button)) {
 329         g_warning("invalid button '%s'", buttonstr);
 330         return FALSE;
 331     }
 332
 333     contextstr = g_ascii_strdown(contextstr, -1);
 334     context = frame_context_from_string(contextstr);
 335     if (!context) {
 336         g_warning("invalid context '%s'", contextstr);
 337         g_free(contextstr);
 338         return FALSE;
 339     }
 340     g_free(contextstr);
 341
 342     for (it = bound_contexts[context]; it != NULL; it = it->next){
 343         b = it->data;
 344         if (b->state == state && b->button == button) {
 345             b->actions[mact] = g_slist_append(b->actions[mact], action);
 346             return TRUE;
 347         }
 348     }
 349
 350     grab_all_clients(FALSE);
 351
 352     /* when there are no modifiers in the binding, then the action cannot
 353        be interactive */
 354     if (!state && action->data.any.interactive) {
 355         action->data.any.interactive = FALSE;
 356         action->data.inter.final = TRUE;
 357     }
 358
 359     /* add the binding */
 360     b = g_new0(ObMouseBinding, 1);
 361     b->state = state;
 362     b->button = button;
 363     b->actions[mact] = g_slist_append(NULL, action);
 364     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 365
 366     grab_all_clients(TRUE);
 367
 368     return TRUE;
 369 }
 370
 371 void mouse_startup(gboolean reconfig)
 372 {
 373 }
 374
 375 void mouse_shutdown(gboolean reconfig)
 376 {
 377     grab_all_clients(FALSE);
 378     clearall();
 379 }