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             }
 231
 232             /* clicks are only valid if its released over the window */
 233             if (e->data.x.e->xbutton.x >= 0 && e->data.x.e->xbutton.y >= 0) {
 234                 int junk;
 235                 Window wjunk;
 236                 guint ujunk, w, h;
 237                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 238                              &wjunk, &junk, &junk, &w, &h, &ujunk, &ujunk);
 239                 if (e->data.x.e->xbutton.x < (signed)w &&
 240                     e->data.x.e->xbutton.y < (signed)h) {
 241                     click =TRUE;
 242                     /* double clicks happen if there were 2 in a row! */
 243                     if (lbutton == button &&
 244                         e->data.x.e->xbutton.time - 300 <= ltime)
 245                         dclick = TRUE;
 246                 }
 247                 lbutton = button;
 248             } else
 249                 lbutton = 0;
 250
 251             button = 0;
 252             ltime = e->data.x.e->xbutton.time;
 253         }
 254         fire_button(MouseAction_Press,
 255                     engine_get_context(e->data.x.client,
 256                                        e->data.x.e->xbutton.window),
 257                     e->data.x.client, e->data.x.e->xbutton.state,
 258                     e->data.x.e->xbutton.button);
 259         if (click)
 260             fire_button(MouseAction_Click,
 261                         engine_get_context(e->data.x.client,
 262                                            e->data.x.e->xbutton.window),
 263                         e->data.x.client, e->data.x.e->xbutton.state,
 264                         e->data.x.e->xbutton.button);
 265         if (dclick)
 266             fire_button(MouseAction_DClick,
 267                         engine_get_context(e->data.x.client,
 268                                            e->data.x.e->xbutton.window),
 269                         e->data.x.client, e->data.x.e->xbutton.state,
 270                         e->data.x.e->xbutton.button);
 271         break;
 272
 273     case Event_X_MotionNotify:
 274         if (button) {
 275             drag = TRUE;
 276             dx = e->data.x.e->xmotion.x_root - px;
 277             dy = e->data.x.e->xmotion.y_root - py;
 278             fire_motion(MouseAction_Motion,
 279                         engine_get_context(e->data.x.client,
 280                                            e->data.x.e->xbutton.window),
 281                         e->data.x.client, e->data.x.e->xmotion.state,
 282                         button, cx, cy, cw, ch, dx, dy, FALSE, corner);
 283         }
 284         break;
 285
 286     default:
 287         g_assert_not_reached();
 288     }
 289 }
 290
 291 static gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 292                       Action *action)
 293 {
 294     guint state, button;
 295     GQuark context;
 296     MouseBinding *b;
 297     GSList *it;
 298     guint i;
 299
 300     if (!translate_button(buttonstr, &state, &button)) {
 301         g_warning("invalid button");
 302         return FALSE;
 303     }
 304
 305     context = g_quark_try_string(contextstr);
 306     if (!context) {
 307         g_warning("invalid context");
 308         return FALSE;
 309     }
 310
 311     for (it = g_datalist_id_get_data(&bound_contexts, context);
 312          it != NULL; it = it->next){
 313         b = it->data;
 314         if (b->state == state && b->button == button) {
 315             /* already bound */
 316             if (b->action[mact] != NULL) {
 317                 g_warning("duplicate binding");
 318                 return FALSE;
 319             }
 320             b->action[mact] = action;
 321             return TRUE;
 322         }
 323     }
 324
 325     grab_all_clients(FALSE);
 326
 327     /* add the binding */
 328     b = g_new(MouseBinding, 1);
 329     b->state = state;
 330     b->button = button;
 331     for (i = 0; i < NUM_MOUSEACTION; ++i)
 332         b->action[i] = NULL;
 333     b->action[mact] = action;
 334     g_datalist_id_set_data(&bound_contexts, context,
 335         g_slist_append(g_datalist_id_get_data(&bound_contexts, context), b));
 336
 337     grab_all_clients(TRUE);
 338
 339     return TRUE;
 340 }
 341
 342 static void binddef()
 343 {
 344     Action *a;
 345
 346     /* When creating an Action struct, all of the data elements in the
 347        appropriate struct need to be set, except the Client*, which will be set
 348        at call-time when then action function is used.
 349
 350        For action_move and action_resize, the 'x', 'y', and 'final' data
 351        elements should not be set, as they are set at call-time.
 352     */
 353
 354     a = action_new(action_move);
 355     mbind("1", "titlebar", MouseAction_Motion, a);
 356     a = action_new(action_move);
 357     mbind("1", "handle", MouseAction_Motion, a);
 358     a = action_new(action_move);
 359     mbind("A-1", "frame", MouseAction_Motion, a);
 360
 361     a = action_new(action_resize);
 362     mbind("1", "blcorner", MouseAction_Motion, a);
 363     a = action_new(action_resize);
 364     mbind("1", "brcorner", MouseAction_Motion, a);
 365     a = action_new(action_resize);
 366     mbind("A-3", "frame", MouseAction_Motion, a);
 367 }
 368
 369 void plugin_startup()
 370 {
 371     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 372                       Event_X_ButtonPress | Event_X_ButtonRelease |
 373                       Event_X_MotionNotify, (EventHandler)event, NULL);
 374
 375     /* XXX parse a config */
 376     binddef();
 377 }
 378
 379 void plugin_shutdown()
 380 {
 381     dispatch_register(0, (EventHandler)event, NULL);
 382
 383     grab_all_clients(FALSE);
 384     g_datalist_foreach(&bound_contexts, foreach_clear, NULL);
 385 }