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     }
  91 }
  92
  93 static gboolean fire_button(ObMouseAction a, ObFrameContext context,
  94                             ObClient *c, guint state,
  95                             guint button, int x, int y)
  96 {
  97     GSList *it;
  98     ObMouseBinding *b;
  99
 100     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 101         b = it->data;
 102         if (b->state == state && b->button == button)
 103             break;
 104     }
 105     /* if not bound, then nothing to do! */
 106     if (it == NULL) return FALSE;
 107
 108     for (it = b->actions[a]; it; it = it->next) {
 109         ObAction *act = it->data;
 110         if (act->func != NULL) {
 111             act->data.any.c = c;
 112
 113             g_assert(act->func != action_moveresize);
 114
 115             if (act->func == action_showmenu) {
 116                 act->data.showmenu.x = x;
 117                 act->data.showmenu.y = y;
 118             }
 119
 120             if (act->data.any.interactive) {
 121                 act->data.inter.cancel = FALSE;
 122                 act->data.inter.final = FALSE;
 123                 keyboard_interactive_grab(state, c, context, act);
 124             }
 125
 126             act->func(&act->data);
 127         }
 128     }
 129     return TRUE;
 130 }
 131
 132 static gboolean fire_motion(ObMouseAction a, ObFrameContext context,
 133                             ObClient *c, guint state, guint button,
 134                             int x_root, int y_root, guint32 corner)
 135 {
 136     GSList *it;
 137     ObMouseBinding *b;
 138
 139     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 140         b = it->data;
 141         if (b->state == state && b->button == button)
 142                 break;
 143     }
 144     /* if not bound, then nothing to do! */
 145     if (it == NULL) return FALSE;
 146
 147     for (it = b->actions[a]; it; it = it->next) {
 148         ObAction *act = it->data;
 149         if (act->func != NULL) {
 150             act->data.any.c = c;
 151
 152             if (act->func == action_moveresize) {
 153                 act->data.moveresize.x = x_root;
 154                 act->data.moveresize.y = y_root;
 155                 act->data.moveresize.button = button;
 156                 if (!(act->data.moveresize.corner ==
 157                       prop_atoms.net_wm_moveresize_move ||
 158                       act->data.moveresize.corner ==
 159                       prop_atoms.net_wm_moveresize_move_keyboard ||
 160                       act->data.moveresize.corner ==
 161                       prop_atoms.net_wm_moveresize_size_keyboard))
 162                     act->data.moveresize.corner = corner;
 163             } else
 164                 g_assert_not_reached();
 165
 166             act->func(&act->data);
 167         }
 168     }
 169     return TRUE;
 170 }
 171
 172 static guint32 pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 173 {
 174     if (x - cx < cw / 2) {
 175         if (y - cy < ch / 2)
 176             return prop_atoms.net_wm_moveresize_size_topleft;
 177         else
 178             return prop_atoms.net_wm_moveresize_size_bottomleft;
 179     } else {
 180         if (y - cy < ch / 2)
 181             return prop_atoms.net_wm_moveresize_size_topright;
 182         else
 183             return prop_atoms.net_wm_moveresize_size_bottomright;
 184     }
 185 }
 186
 187 void mouse_event(ObClient *client, ObFrameContext context, XEvent *e)
 188 {
 189     static Time ltime;
 190     static guint button = 0, state = 0, lbutton = 0;
 191
 192     static Window lwindow = None;
 193     static int px, py;
 194     gboolean click = FALSE;
 195     gboolean dclick = FALSE;
 196
 197     switch (e->type) {
 198     case ButtonPress:
 199         px = e->xbutton.x_root;
 200         py = e->xbutton.y_root;
 201         button = e->xbutton.button;
 202         state = e->xbutton.state;
 203
 204         fire_button(OB_MOUSE_ACTION_PRESS, context,
 205                     client, e->xbutton.state,
 206                     e->xbutton.button,
 207                     e->xbutton.x_root, e->xbutton.y_root);
 208
 209         if (CLIENT_CONTEXT(context, client)) {
 210             /* Replay the event, so it goes to the client*/
 211             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 212             /* Fall through to the release case! */
 213         } else
 214             break;
 215
 216     case ButtonRelease:
 217         if (e->xbutton.button == button) {
 218             /* clicks are only valid if its released over the window */
 219             int junk1, junk2;
 220             Window wjunk;
 221             guint ujunk, b, w, h;
 222             xerror_set_ignore(TRUE);
 223             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 224                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 225             xerror_set_ignore(FALSE);
 226             if (junk1) {
 227                 if (e->xbutton.x >= (signed)-b &&
 228                     e->xbutton.y >= (signed)-b &&
 229                     e->xbutton.x < (signed)(w+b) &&
 230                     e->xbutton.y < (signed)(h+b)) {
 231                     click = TRUE;
 232                     /* double clicks happen if there were 2 in a row! */
 233                     if (lbutton == button &&
 234                         lwindow == e->xbutton.window &&
 235                         e->xbutton.time - config_mouse_dclicktime <=
 236                         ltime) {
 237                         dclick = TRUE;
 238                         lbutton = 0;
 239                     } else {
 240                         lbutton = button;
 241                         lwindow = e->xbutton.window;
 242                     }
 243                 } else {
 244                     lbutton = 0;
 245                     lwindow = None;
 246                 }
 247             }
 248
 249             button = 0;
 250             state = 0;
 251             ltime = e->xbutton.time;
 252         }
 253         fire_button(OB_MOUSE_ACTION_RELEASE, context,
 254                     client, e->xbutton.state,
 255                     e->xbutton.button,
 256                     e->xbutton.x_root, e->xbutton.y_root);
 257         if (click)
 258             fire_button(OB_MOUSE_ACTION_CLICK, context,
 259                         client, e->xbutton.state,
 260                         e->xbutton.button,
 261                         e->xbutton.x_root,
 262                         e->xbutton.y_root);
 263         if (dclick)
 264             fire_button(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 265                         client, e->xbutton.state,
 266                         e->xbutton.button,
 267                         e->xbutton.x_root,
 268                         e->xbutton.y_root);
 269         break;
 270
 271     case MotionNotify:
 272         if (button) {
 273             if (ABS(e->xmotion.x_root - px) >=
 274                 config_mouse_threshold ||
 275                 ABS(e->xmotion.y_root - py) >=
 276                 config_mouse_threshold) {
 277                 guint32 corner;
 278
 279                 /* You can't drag on buttons */
 280                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 281                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 282                     context == OB_FRAME_CONTEXT_SHADE ||
 283                     context == OB_FRAME_CONTEXT_ICONIFY ||
 284                     context == OB_FRAME_CONTEXT_ICON ||
 285                     context == OB_FRAME_CONTEXT_CLOSE)
 286                     break;
 287
 288                 if (!client)
 289                     corner = prop_atoms.net_wm_moveresize_size_bottomright;
 290                 else
 291                     corner =
 292                         pick_corner(e->xmotion.x_root,
 293                                     e->xmotion.y_root,
 294                                     client->frame->area.x,
 295                                     client->frame->area.y,
 296                                     /* use the client size because the frame
 297                                        can be differently sized (shaded
 298                                        windows) and we want this based on the
 299                                        clients size */
 300                                     client->area.width +
 301                                     client->frame->size.left +
 302                                     client->frame->size.right,
 303                                     client->area.height +
 304                                     client->frame->size.top +
 305                                     client->frame->size.bottom);
 306                 fire_motion(OB_MOUSE_ACTION_MOTION, context,
 307                             client, state, button, px, py, corner);
 308                 button = 0;
 309                 state = 0;
 310             }
 311         }
 312         break;
 313
 314     default:
 315         g_assert_not_reached();
 316     }
 317 }
 318
 319 gboolean mouse_bind(char *buttonstr, char *contextstr, ObMouseAction mact,
 320                     ObAction *action)
 321 {
 322     guint state, button;
 323     ObFrameContext context;
 324     ObMouseBinding *b;
 325     GSList *it;
 326
 327     if (!translate_button(buttonstr, &state, &button)) {
 328         g_warning("invalid button '%s'", buttonstr);
 329         return FALSE;
 330     }
 331
 332     contextstr = g_ascii_strdown(contextstr, -1);
 333     context = frame_context_from_string(contextstr);
 334     if (!context) {
 335         g_warning("invalid context '%s'", contextstr);
 336         g_free(contextstr);
 337         return FALSE;
 338     }
 339     g_free(contextstr);
 340
 341     for (it = bound_contexts[context]; it != NULL; it = it->next){
 342         b = it->data;
 343         if (b->state == state && b->button == button) {
 344             b->actions[mact] = g_slist_append(b->actions[mact], action);
 345             return TRUE;
 346         }
 347     }
 348
 349     grab_all_clients(FALSE);
 350
 351     /* when there are no modifiers in the binding, then the action cannot
 352        be interactive */
 353     if (!state && action->data.any.interactive) {
 354         action->data.any.interactive = FALSE;
 355         action->data.inter.final = TRUE;
 356     }
 357
 358     /* add the binding */
 359     b = g_new0(ObMouseBinding, 1);
 360     b->state = state;
 361     b->button = button;
 362     b->actions[mact] = g_slist_append(NULL, action);
 363     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 364
 365     grab_all_clients(TRUE);
 366
 367     return TRUE;
 368 }
 369
 370 void mouse_startup()
 371 {
 372 }
 373
 374 void mouse_shutdown()
 375 {
 376     grab_all_clients(FALSE);
 377     clearall();
 378 }