Dogcows Code - chaz/openbox/blob - plugins/mouse/mouse.c

   1 #include "../../kernel/openbox.h"
   2 #include "../../kernel/dispatch.h"
   3 #include "../../kernel/action.h"
   4 #include "../../kernel/client.h"
   5 #include "../../kernel/frame.h"
   6 #include "../../kernel/engine.h"
   7 #include "translate.h"
   8 #include "mouse.h"
   9 #include <glib.h>
  10
  11 /* GData of GSList*s of PointerBinding*s. */
  12 static GData *bound_contexts;
  13
  14 struct foreach_grab_temp {
  15     Client *client;
  16     gboolean grab;
  17 };
  18
  19 static void grab_button(Client *client, guint state, guint button,
  20                         GQuark context, gboolean grab)
  21 {
  22     Window win;
  23     int mode = GrabModeAsync;
  24     unsigned int mask;
  25
  26     if (context == g_quark_try_string("frame")) {
  27         win = client->frame->window;
  28         mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  29     } else if (context == g_quark_try_string("client")) {
  30         win = client->frame->plate;
  31         mode = GrabModeSync; /* this is handled in pointer_event */
  32         mask = ButtonPressMask; /* can't catch more than this with Sync mode
  33                                    the release event is manufactured in
  34                                    pointer_fire */
  35     } else return;
  36
  37     if (grab)
  38         /* XXX grab all lock keys */
  39         XGrabButton(ob_display, button, state, win, FALSE, mask, mode,
  40                     GrabModeAsync, None, None);
  41     else
  42         /* XXX ungrab all lock keys */
  43         XUngrabButton(ob_display, button, state, win);
  44 }
  45
  46 static void foreach_grab(GQuark key, gpointer data, gpointer user_data)
  47 {
  48     struct foreach_grab_temp *d = user_data;
  49     GSList *it;
  50     for (it = data; it != NULL; it = it->next) {
  51         MouseBinding *b = it->data;
  52         grab_button(d->client, b->state, b->button, key, d->grab);
  53     }
  54 }
  55
  56 static void grab_for_client(Client *client, gboolean grab)
  57 {
  58     struct foreach_grab_temp bt;
  59     bt.client = client;
  60     bt.grab = grab;
  61     g_datalist_foreach(&bound_contexts, foreach_grab, &bt);
  62 }
  63
  64 static void grab_all_clients(gboolean grab)
  65 {
  66     GSList *it;
  67
  68     for (it = client_list; it != NULL; it = it->next)
  69         grab_for_client(it->data, grab);
  70 }
  71
  72 static void foreach_clear(GQuark key, gpointer data, gpointer user_data)
  73 {
  74     GSList *it;
  75     user_data = user_data;
  76     for (it = data; it != NULL; it = it->next) {
  77         int i;
  78
  79         MouseBinding *b = it->data;
  80         for (i = 0; i < NUM_MOUSEACTION; ++i)
  81             if (b->action[i] != NULL)
  82                 action_free(b->action[i]);
  83         g_free(b);
  84     }
  85     g_slist_free(data);
  86 }
  87
  88 static void fire_button(MouseAction a, GQuark context, Client *c, guint state,
  89                         guint button)
  90 {
  91     GSList *it;
  92     MouseBinding *b;
  93
  94     for (it = g_datalist_id_get_data(&bound_contexts, context);
  95          it != NULL; it = it->next) {
  96         b = it->data;
  97         if (b->state == state && b->button == button)
  98             break;
  99     }
 100     /* if not bound, then nothing to do! */
 101     if (it == NULL) return;
 102
 103     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 104         b->action[a]->data.any.c = c;
 105
 106         g_assert(!(b->action[a]->func == action_move ||
 107                    b->action[a]->func == action_resize));
 108
 109         b->action[a]->func(&b->action[a]->data);
 110     }
 111 }
 112
 113 /* corner should be the opposite corner of the window in which the pointer
 114    clicked, Corner_TopLeft if a good default if there is no client */
 115 static void fire_motion(MouseAction a, GQuark context, Client *c, guint state,
 116                         guint button, int cx, int cy, int cw, int ch,
 117                         int dx, int dy, gboolean final, Corner corner)
 118 {
 119     GSList *it;
 120     MouseBinding *b;
 121
 122     for (it = g_datalist_id_get_data(&bound_contexts, context);
 123          it != NULL; it = it->next) {
 124         b = it->data;
 125         if (b->state == state && b->button == button)
 126                 break;
 127     }
 128     /* if not bound, then nothing to do! */
 129     if (it == NULL) return;
 130
 131     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 132         b->action[a]->data.any.c = c;
 133
 134         if (b->action[a]->func == action_move) {
 135             b->action[a]->data.move.x = cx + dx;
 136             b->action[a]->data.move.y = cy + dy;
 137             b->action[a]->data.move.final = final;
 138         } else if (b->action[a]->func == action_resize) {
 139             b->action[a]->data.resize.corner = corner;
 140             switch (corner) {
 141             case Corner_TopLeft:
 142                 b->action[a]->data.resize.x = cw + dx;
 143                 b->action[a]->data.resize.y = ch + dy;
 144                 break;
 145             case Corner_TopRight:
 146                 b->action[a]->data.resize.x = cw - dx;
 147                 b->action[a]->data.resize.y = ch + dy;
 148                 break;
 149             case Corner_BottomLeft:
 150                 b->action[a]->data.resize.x = cw + dx;
 151                 b->action[a]->data.resize.y = ch - dy;
 152                 break;
 153             case Corner_BottomRight:
 154                 b->action[a]->data.resize.x = cw - dx;
 155                 b->action[a]->data.resize.y = ch - dy;
 156                 break;
 157             }
 158             b->action[a]->data.resize.final = final;
 159         }
 160         b->action[a]->func(&b->action[a]->data);
 161     }
 162 }
 163
 164 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 165 {
 166     if (x - cx < cw / 2) {
 167         if (y - cy < ch / 2)
 168             return Corner_BottomRight;
 169         else
 170             return Corner_TopRight;
 171     } else {
 172         if (y - cy < ch / 2)
 173             return Corner_BottomLeft;
 174         else
 175             return Corner_TopLeft;
 176     }
 177 }
 178
 179 static void event(ObEvent *e, void *foo)
 180 {
 181     static Time ltime;
 182     static int px, py, cx, cy, cw, ch, dx, dy;
 183     static guint button = 0, lbutton = 0;
 184     static gboolean drag = FALSE;
 185     static Corner corner = Corner_TopLeft;
 186     gboolean click = FALSE;
 187     gboolean dclick = FALSE;
 188
 189     switch (e->type) {
 190     case Event_Client_Mapped:
 191         grab_for_client(e->data.c.client, TRUE);
 192         break;
 193
 194     case Event_Client_Destroy:
 195         grab_for_client(e->data.c.client, FALSE);
 196         break;
 197
 198     case Event_X_ButtonPress:
 199         if (!button) {
 200             if (e->data.x.client == NULL)
 201                 corner = Corner_TopLeft;
 202             else {
 203                 cx = e->data.x.client->frame->area.x;
 204                 cy = e->data.x.client->frame->area.y;
 205                 cw = e->data.x.client->frame->area.width;
 206                 ch = e->data.x.client->frame->area.height;
 207                 px = e->data.x.e->xbutton.x_root;
 208                 py = e->data.x.e->xbutton.y_root;
 209                 corner = pick_corner(px, py, cx, cy, cw, ch);
 210                 button = e->data.x.e->xbutton.button;
 211             }
 212         }
 213         fire_button(MouseAction_Press,
 214                     engine_get_context(e->data.x.client,
 215                                        e->data.x.e->xbutton.window),
 216                     e->data.x.client, e->data.x.e->xbutton.state,
 217                     e->data.x.e->xbutton.button);
 218         break;
 219
 220     case Event_X_ButtonRelease:
 221         if (e->data.x.e->xbutton.button == button) {
 222             /* end drags */
 223             if (drag) {
 224                 fire_motion(MouseAction_Motion,
 225                             engine_get_context(e->data.x.client,
 226                                                e->data.x.e->xbutton.window),
 227                             e->data.x.client, e->data.x.e->xbutton.state,
 228                             e->data.x.e->xbutton.button,
 229                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 230                 drag = FALSE;
 231             }
 232
 233             /* clicks are only valid if its released over the window */
 234             if (e->data.x.e->xbutton.x >= 0 && e->data.x.e->xbutton.y >= 0) {
 235                 int junk;
 236                 Window wjunk;
 237                 guint ujunk, w, h;
 238                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 239                              &wjunk, &junk, &junk, &w, &h, &ujunk, &ujunk);
 240                 if (e->data.x.e->xbutton.x < (signed)w &&
 241                     e->data.x.e->xbutton.y < (signed)h) {
 242                     click =TRUE;
 243                     /* double clicks happen if there were 2 in a row! */
 244                     if (lbutton == button &&
 245                         e->data.x.e->xbutton.time - 300 <= ltime)
 246                         dclick = TRUE;
 247                 }
 248                 lbutton = button;
 249             } else
 250                 lbutton = 0;
 251
 252             button = 0;
 253             ltime = e->data.x.e->xbutton.time;
 254         }
 255         fire_button(MouseAction_Press,
 256                     engine_get_context(e->data.x.client,
 257                                        e->data.x.e->xbutton.window),
 258                     e->data.x.client, e->data.x.e->xbutton.state,
 259                     e->data.x.e->xbutton.button);
 260         if (click)
 261             fire_button(MouseAction_Click,
 262                         engine_get_context(e->data.x.client,
 263                                            e->data.x.e->xbutton.window),
 264                         e->data.x.client, e->data.x.e->xbutton.state,
 265                         e->data.x.e->xbutton.button);
 266         if (dclick)
 267             fire_button(MouseAction_DClick,
 268                         engine_get_context(e->data.x.client,
 269                                            e->data.x.e->xbutton.window),
 270                         e->data.x.client, e->data.x.e->xbutton.state,
 271                         e->data.x.e->xbutton.button);
 272         break;
 273
 274     case Event_X_MotionNotify:
 275         if (button) {
 276             drag = TRUE;
 277             dx = e->data.x.e->xmotion.x_root - px;
 278             dy = e->data.x.e->xmotion.y_root - py;
 279             fire_motion(MouseAction_Motion,
 280                         engine_get_context(e->data.x.client,
 281                                            e->data.x.e->xbutton.window),
 282                         e->data.x.client, e->data.x.e->xmotion.state,
 283                         button, cx, cy, cw, ch, dx, dy, FALSE, corner);
 284         }
 285         break;
 286
 287     default:
 288         g_assert_not_reached();
 289     }
 290 }
 291
 292 static gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 293                       Action *action)
 294 {
 295     guint state, button;
 296     GQuark context;
 297     MouseBinding *b;
 298     GSList *it;
 299     guint i;
 300
 301     if (!translate_button(buttonstr, &state, &button)) {
 302         g_warning("invalid button");
 303         return FALSE;
 304     }
 305
 306     context = g_quark_try_string(contextstr);
 307     if (!context) {
 308         g_warning("invalid context");
 309         return FALSE;
 310     }
 311
 312     for (it = g_datalist_id_get_data(&bound_contexts, context);
 313          it != NULL; it = it->next){
 314         b = it->data;
 315         if (b->state == state && b->button == button) {
 316             /* already bound */
 317             if (b->action[mact] != NULL) {
 318                 g_warning("duplicate binding");
 319                 return FALSE;
 320             }
 321             b->action[mact] = action;
 322             return TRUE;
 323         }
 324     }
 325
 326     grab_all_clients(FALSE);
 327
 328     /* add the binding */
 329     b = g_new(MouseBinding, 1);
 330     b->state = state;
 331     b->button = button;
 332     for (i = 0; i < NUM_MOUSEACTION; ++i)
 333         b->action[i] = NULL;
 334     b->action[mact] = action;
 335     g_datalist_id_set_data(&bound_contexts, context,
 336         g_slist_append(g_datalist_id_get_data(&bound_contexts, context), b));
 337
 338     grab_all_clients(TRUE);
 339
 340     return TRUE;
 341 }
 342
 343 static void binddef()
 344 {
 345     Action *a;
 346
 347     /* When creating an Action struct, all of the data elements in the
 348        appropriate struct need to be set, except the Client*, which will be set
 349        at call-time when then action function is used.
 350
 351        For action_move and action_resize, the 'x', 'y', and 'final' data
 352        elements should not be set, as they are set at call-time.
 353     */
 354
 355     a = action_new(action_move);
 356     mbind("1", "titlebar", MouseAction_Motion, a);
 357     a = action_new(action_move);
 358     mbind("1", "handle", MouseAction_Motion, a);
 359     a = action_new(action_move);
 360     mbind("A-1", "frame", MouseAction_Motion, a);
 361
 362     a = action_new(action_resize);
 363     mbind("1", "blcorner", MouseAction_Motion, a);
 364     a = action_new(action_resize);
 365     mbind("1", "brcorner", MouseAction_Motion, a);
 366     a = action_new(action_resize);
 367     mbind("A-3", "frame", MouseAction_Motion, a);
 368 }
 369
 370 void plugin_startup()
 371 {
 372     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 373                       Event_X_ButtonPress | Event_X_ButtonRelease |
 374                       Event_X_MotionNotify, (EventHandler)event, NULL);
 375
 376     /* XXX parse a config */
 377     binddef();
 378 }
 379
 380 void plugin_shutdown()
 381 {
 382     dispatch_register(0, (EventHandler)event, NULL);
 383
 384     grab_all_clients(FALSE);
 385     g_datalist_foreach(&bound_contexts, foreach_clear, NULL);
 386 }