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,
  57                                  OB_CURSOR_NONE);
  58             else
  59                 ungrab_button(b->button, b->state, win);
  60         }
  61 }
  62
  63 static void grab_all_clients(gboolean grab)
  64 {
  65     GList *it;
  66
  67     for (it = client_list; it != NULL; it = it->next)
  68         mouse_grab_for_client(it->data, grab);
  69 }
  70
  71 static void clearall()
  72 {
  73     int i;
  74     GSList *it;
  75
  76     for(i = 0; i < OB_FRAME_NUM_CONTEXTS; ++i) {
  77         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  78             int j;
  79
  80             ObMouseBinding *b = it->data;
  81             for (j = 0; j < OB_MOUSE_NUM_ACTIONS; ++j) {
  82                 GSList *it;
  83                 for (it = b->actions[j]; it; it = it->next) {
  84                     action_free(it->data);
  85                 }
  86                 g_slist_free(b->actions[j]);
  87             }
  88             g_free(b);
  89         }
  90         g_slist_free(bound_contexts[i]);
  91         bound_contexts[i] = NULL;
  92     }
  93 }
  94
  95 static gboolean fire_button(ObMouseAction a, ObFrameContext context,
  96                             ObClient *c, guint state,
  97                             guint button, int x, int y)
  98 {
  99     GSList *it;
 100     ObMouseBinding *b;
 101
 102     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 103         b = it->data;
 104         if (b->state == state && b->button == button)
 105             break;
 106     }
 107     /* if not bound, then nothing to do! */
 108     if (it == NULL) return FALSE;
 109
 110     for (it = b->actions[a]; it; it = it->next) {
 111         ObAction *act = it->data;
 112         if (act->func != NULL) {
 113             act->data.any.c = c;
 114
 115             g_assert(act->func != action_moveresize);
 116
 117             if (act->func == action_showmenu) {
 118                 act->data.showmenu.x = x;
 119                 act->data.showmenu.y = y;
 120             }
 121
 122             if (act->data.any.interactive) {
 123                 act->data.inter.cancel = FALSE;
 124                 act->data.inter.final = FALSE;
 125                 keyboard_interactive_grab(state, c, context, act);
 126             }
 127
 128             act->func(&act->data);
 129         }
 130     }
 131     return TRUE;
 132 }
 133
 134 static gboolean fire_motion(ObMouseAction a, ObFrameContext context,
 135                             ObClient *c, guint state, guint button,
 136                             int x_root, int y_root, guint32 corner)
 137 {
 138     GSList *it;
 139     ObMouseBinding *b;
 140
 141     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 142         b = it->data;
 143         if (b->state == state && b->button == button)
 144                 break;
 145     }
 146     /* if not bound, then nothing to do! */
 147     if (it == NULL) return FALSE;
 148
 149     for (it = b->actions[a]; it; it = it->next) {
 150         ObAction *act = it->data;
 151         if (act->func != NULL) {
 152             act->data.any.c = c;
 153
 154             if (act->func == action_moveresize) {
 155                 act->data.moveresize.x = x_root;
 156                 act->data.moveresize.y = y_root;
 157                 act->data.moveresize.button = button;
 158                 if (!(act->data.moveresize.corner ==
 159                       prop_atoms.net_wm_moveresize_move ||
 160                       act->data.moveresize.corner ==
 161                       prop_atoms.net_wm_moveresize_move_keyboard ||
 162                       act->data.moveresize.corner ==
 163                       prop_atoms.net_wm_moveresize_size_keyboard))
 164                     act->data.moveresize.corner = corner;
 165             } else
 166                 g_assert_not_reached();
 167
 168             act->func(&act->data);
 169         }
 170     }
 171     return TRUE;
 172 }
 173
 174 static guint32 pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 175 {
 176     if (x - cx < cw / 2) {
 177         if (y - cy < ch / 2)
 178             return prop_atoms.net_wm_moveresize_size_topleft;
 179         else
 180             return prop_atoms.net_wm_moveresize_size_bottomleft;
 181     } else {
 182         if (y - cy < ch / 2)
 183             return prop_atoms.net_wm_moveresize_size_topright;
 184         else
 185             return prop_atoms.net_wm_moveresize_size_bottomright;
 186     }
 187 }
 188
 189 void mouse_event(ObClient *client, ObFrameContext context, XEvent *e)
 190 {
 191     static Time ltime;
 192     static guint button = 0, state = 0, lbutton = 0;
 193
 194     static Window lwindow = None;
 195     static int px, py;
 196     gboolean click = FALSE;
 197     gboolean dclick = FALSE;
 198
 199     switch (e->type) {
 200     case ButtonPress:
 201         px = e->xbutton.x_root;
 202         py = e->xbutton.y_root;
 203         button = e->xbutton.button;
 204         state = e->xbutton.state;
 205
 206         fire_button(OB_MOUSE_ACTION_PRESS, context,
 207                     client, e->xbutton.state,
 208                     e->xbutton.button,
 209                     e->xbutton.x_root, e->xbutton.y_root);
 210
 211         if (CLIENT_CONTEXT(context, client)) {
 212             /* Replay the event, so it goes to the client*/
 213             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 214             /* Fall through to the release case! */
 215         } else
 216             break;
 217
 218     case ButtonRelease:
 219         if (e->xbutton.button == button) {
 220             /* clicks are only valid if its released over the window */
 221             int junk1, junk2;
 222             Window wjunk;
 223             guint ujunk, b, w, h;
 224             xerror_set_ignore(TRUE);
 225             junk1 = XGetGeometry(ob_display, e->xbutton.window,
 226                                  &wjunk, &junk1, &junk2, &w, &h, &b, &ujunk);
 227             xerror_set_ignore(FALSE);
 228             if (junk1) {
 229                 if (e->xbutton.x >= (signed)-b &&
 230                     e->xbutton.y >= (signed)-b &&
 231                     e->xbutton.x < (signed)(w+b) &&
 232                     e->xbutton.y < (signed)(h+b)) {
 233                     click = TRUE;
 234                     /* double clicks happen if there were 2 in a row! */
 235                     if (lbutton == button &&
 236                         lwindow == e->xbutton.window &&
 237                         e->xbutton.time - config_mouse_dclicktime <=
 238                         ltime) {
 239                         dclick = TRUE;
 240                         lbutton = 0;
 241                     } else {
 242                         lbutton = button;
 243                         lwindow = e->xbutton.window;
 244                     }
 245                 } else {
 246                     lbutton = 0;
 247                     lwindow = None;
 248                 }
 249             }
 250
 251             button = 0;
 252             state = 0;
 253             ltime = e->xbutton.time;
 254         }
 255         fire_button(OB_MOUSE_ACTION_RELEASE, context,
 256                     client, e->xbutton.state,
 257                     e->xbutton.button,
 258                     e->xbutton.x_root, e->xbutton.y_root);
 259         if (click)
 260             fire_button(OB_MOUSE_ACTION_CLICK, context,
 261                         client, e->xbutton.state,
 262                         e->xbutton.button,
 263                         e->xbutton.x_root,
 264                         e->xbutton.y_root);
 265         if (dclick)
 266             fire_button(OB_MOUSE_ACTION_DOUBLE_CLICK, context,
 267                         client, e->xbutton.state,
 268                         e->xbutton.button,
 269                         e->xbutton.x_root,
 270                         e->xbutton.y_root);
 271         break;
 272
 273     case MotionNotify:
 274         if (button) {
 275             if (ABS(e->xmotion.x_root - px) >=
 276                 config_mouse_threshold ||
 277                 ABS(e->xmotion.y_root - py) >=
 278                 config_mouse_threshold) {
 279                 guint32 corner;
 280
 281                 /* You can't drag on buttons */
 282                 if (context == OB_FRAME_CONTEXT_MAXIMIZE ||
 283                     context == OB_FRAME_CONTEXT_ALLDESKTOPS ||
 284                     context == OB_FRAME_CONTEXT_SHADE ||
 285                     context == OB_FRAME_CONTEXT_ICONIFY ||
 286                     context == OB_FRAME_CONTEXT_ICON ||
 287                     context == OB_FRAME_CONTEXT_CLOSE)
 288                     break;
 289
 290                 if (!client)
 291                     corner = prop_atoms.net_wm_moveresize_size_bottomright;
 292                 else
 293                     corner =
 294                         pick_corner(e->xmotion.x_root,
 295                                     e->xmotion.y_root,
 296                                     client->frame->area.x,
 297                                     client->frame->area.y,
 298                                     /* use the client size because the frame
 299                                        can be differently sized (shaded
 300                                        windows) and we want this based on the
 301                                        clients size */
 302                                     client->area.width +
 303                                     client->frame->size.left +
 304                                     client->frame->size.right,
 305                                     client->area.height +
 306                                     client->frame->size.top +
 307                                     client->frame->size.bottom);
 308                 fire_motion(OB_MOUSE_ACTION_MOTION, context,
 309                             client, state, button, px, py, corner);
 310                 button = 0;
 311                 state = 0;
 312             }
 313         }
 314         break;
 315
 316     default:
 317         g_assert_not_reached();
 318     }
 319 }
 320
 321 gboolean mouse_bind(char *buttonstr, char *contextstr, ObMouseAction mact,
 322                     ObAction *action)
 323 {
 324     guint state, button;
 325     ObFrameContext context;
 326     ObMouseBinding *b;
 327     GSList *it;
 328
 329     if (!translate_button(buttonstr, &state, &button)) {
 330         g_warning("invalid button '%s'", buttonstr);
 331         return FALSE;
 332     }
 333
 334     contextstr = g_ascii_strdown(contextstr, -1);
 335     context = frame_context_from_string(contextstr);
 336     if (!context) {
 337         g_warning("invalid context '%s'", contextstr);
 338         g_free(contextstr);
 339         return FALSE;
 340     }
 341     g_free(contextstr);
 342
 343     for (it = bound_contexts[context]; it != NULL; it = it->next){
 344         b = it->data;
 345         if (b->state == state && b->button == button) {
 346             b->actions[mact] = g_slist_append(b->actions[mact], action);
 347             return TRUE;
 348         }
 349     }
 350
 351     grab_all_clients(FALSE);
 352
 353     /* when there are no modifiers in the binding, then the action cannot
 354        be interactive */
 355     if (!state && action->data.any.interactive) {
 356         action->data.any.interactive = FALSE;
 357         action->data.inter.final = TRUE;
 358     }
 359
 360     /* add the binding */
 361     b = g_new0(ObMouseBinding, 1);
 362     b->state = state;
 363     b->button = button;
 364     b->actions[mact] = g_slist_append(NULL, action);
 365     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 366
 367     grab_all_clients(TRUE);
 368
 369     return TRUE;
 370 }
 371
 372 void mouse_startup(gboolean reconfig)
 373 {
 374 }
 375
 376 void mouse_shutdown(gboolean reconfig)
 377 {
 378     grab_all_clients(FALSE);
 379     clearall();
 380 }