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             action_free(b->action[i]);
  82         g_free(b);
  83     }
  84     g_slist_free(data);
  85 }
  86
  87 static void fire_button(MouseAction a, GQuark context, Client *c, guint state,
  88                         guint button)
  89 {
  90     GSList *it;
  91     MouseBinding *b;
  92
  93     for (it = g_datalist_id_get_data(&bound_contexts, context);
  94          it != NULL; it = it->next) {
  95         b = it->data;
  96         if (b->state == state && b->button == button)
  97             break;
  98     }
  99     /* if not bound, then nothing to do! */
 100     if (it == NULL) return;
 101
 102     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 103         b->action[a]->data.any.c = c;
 104
 105         g_assert(!(b->action[a]->func == action_move ||
 106                    b->action[a]->func == action_resize));
 107
 108         b->action[a]->func(&b->action[a]->data);
 109     }
 110 }
 111
 112 /* corner should be the opposite corner of the window in which the pointer
 113    clicked, Corner_TopLeft if a good default if there is no client */
 114 static void fire_motion(MouseAction a, GQuark context, Client *c, guint state,
 115                         guint button, int cx, int cy, int cw, int ch,
 116                         int dx, int dy, gboolean final, Corner corner)
 117 {
 118     GSList *it;
 119     MouseBinding *b;
 120
 121     for (it = g_datalist_id_get_data(&bound_contexts, context);
 122          it != NULL; it = it->next) {
 123         b = it->data;
 124         if (b->state == state && b->button == button)
 125                 break;
 126     }
 127     /* if not bound, then nothing to do! */
 128     if (it == NULL) return;
 129
 130     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 131         b->action[a]->data.any.c = c;
 132
 133         if (b->action[a]->func == action_move) {
 134             b->action[a]->data.move.x = cx + dx;
 135             b->action[a]->data.move.y = cy + dy;
 136             b->action[a]->data.move.final = final;
 137         } else if (b->action[a]->func == action_resize) {
 138             b->action[a]->data.resize.corner = corner;
 139             switch (corner) {
 140             case Corner_TopLeft:
 141                 b->action[a]->data.resize.x = cw + dx;
 142                 b->action[a]->data.resize.y = ch + dy;
 143                 break;
 144             case Corner_TopRight:
 145                 b->action[a]->data.resize.x = cw - dx;
 146                 b->action[a]->data.resize.y = ch + dy;
 147                 break;
 148             case Corner_BottomLeft:
 149                 b->action[a]->data.resize.x = cw + dx;
 150                 b->action[a]->data.resize.y = ch - dy;
 151                 break;
 152             case Corner_BottomRight:
 153                 b->action[a]->data.resize.x = cw - dx;
 154                 b->action[a]->data.resize.y = ch - dy;
 155                 break;
 156             }
 157             b->action[a]->data.resize.final = final;
 158         }
 159         b->action[a]->func(&b->action[a]->data);
 160     }
 161 }
 162
 163 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 164 {
 165     if (x - cx < cw / 2) {
 166         if (y - cy < ch / 2)
 167             return Corner_BottomRight;
 168         else
 169             return Corner_TopRight;
 170     } else {
 171         if (y - cy < ch / 2)
 172             return Corner_BottomLeft;
 173         else
 174             return Corner_TopLeft;
 175     }
 176 }
 177
 178 static void event(ObEvent *e, void *foo)
 179 {
 180     static Time ltime;
 181     static int px, py, cx, cy, cw, ch, dx, dy;
 182     static guint button = 0, lbutton = 0;
 183     static gboolean drag = FALSE;
 184     static Corner corner = Corner_TopLeft;
 185     gboolean click = FALSE;
 186     gboolean dclick = FALSE;
 187
 188     switch (e->type) {
 189     case Event_Client_Mapped:
 190         grab_for_client(e->data.c.client, TRUE);
 191         break;
 192
 193     case Event_Client_Destroy:
 194         grab_for_client(e->data.c.client, FALSE);
 195         break;
 196
 197     case Event_X_ButtonPress:
 198         if (!button) {
 199             if (e->data.x.client == NULL)
 200                 corner = Corner_TopLeft;
 201             else {
 202                 cx = e->data.x.client->frame->area.x;
 203                 cy = e->data.x.client->frame->area.y;
 204                 cw = e->data.x.client->frame->area.width;
 205                 ch = e->data.x.client->frame->area.height;
 206                 px = e->data.x.e->xbutton.x_root;
 207                 py = e->data.x.e->xbutton.y_root;
 208                 corner = pick_corner(px, py, cx, cy, cw, ch);
 209                 button = e->data.x.e->xbutton.button;
 210             }
 211         }
 212         fire_button(MouseAction_Press,
 213                     engine_get_context(e->data.x.client,
 214                                        e->data.x.e->xbutton.window),
 215                     e->data.x.client, e->data.x.e->xbutton.state,
 216                     e->data.x.e->xbutton.button);
 217         break;
 218
 219     case Event_X_ButtonRelease:
 220         if (e->data.x.e->xbutton.button == button) {
 221             /* end drags */
 222             if (drag) {
 223                 fire_motion(MouseAction_Motion,
 224                             engine_get_context(e->data.x.client,
 225                                                e->data.x.e->xbutton.window),
 226                             e->data.x.client, e->data.x.e->xbutton.state,
 227                             e->data.x.e->xbutton.button,
 228                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 229             }
 230
 231             /* clicks are only valid if its released over the window */
 232             if (e->data.x.e->xbutton.x >= 0 && e->data.x.e->xbutton.y >= 0) {
 233                 int junk;
 234                 Window wjunk;
 235                 guint ujunk, w, h;
 236                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 237                              &wjunk, &junk, &junk, &w, &h, &ujunk, &ujunk);
 238                 if (e->data.x.e->xbutton.x < (signed)w &&
 239                     e->data.x.e->xbutton.y < (signed)h) {
 240                     click =TRUE;
 241                     /* double clicks happen if there were 2 in a row! */
 242                     if (lbutton == button &&
 243                         e->data.x.e->xbutton.time - 300 <= ltime)
 244                         dclick = TRUE;
 245                 }
 246                 lbutton = button;
 247             } else
 248                 lbutton = 0;
 249
 250             button = 0;
 251             ltime = e->data.x.e->xbutton.time;
 252         }
 253         fire_button(MouseAction_Press,
 254                     engine_get_context(e->data.x.client,
 255                                        e->data.x.e->xbutton.window),
 256                     e->data.x.client, e->data.x.e->xbutton.state,
 257                     e->data.x.e->xbutton.button);
 258         if (click)
 259             fire_button(MouseAction_Click,
 260                         engine_get_context(e->data.x.client,
 261                                            e->data.x.e->xbutton.window),
 262                         e->data.x.client, e->data.x.e->xbutton.state,
 263                         e->data.x.e->xbutton.button);
 264         if (dclick)
 265             fire_button(MouseAction_DClick,
 266                         engine_get_context(e->data.x.client,
 267                                            e->data.x.e->xbutton.window),
 268                         e->data.x.client, e->data.x.e->xbutton.state,
 269                         e->data.x.e->xbutton.button);
 270         break;
 271
 272     case Event_X_MotionNotify:
 273         if (button) {
 274             drag = TRUE;
 275             dx = e->data.x.e->xmotion.x_root - px;
 276             dy = e->data.x.e->xmotion.y_root - py;
 277             fire_motion(MouseAction_Motion,
 278                         engine_get_context(e->data.x.client,
 279                                            e->data.x.e->xbutton.window),
 280                         e->data.x.client, e->data.x.e->xmotion.state,
 281                         button, cx, cy, cw, ch, dx, dy, FALSE, corner);
 282         }
 283         break;
 284
 285     default:
 286         g_assert_not_reached();
 287     }
 288 }
 289
 290 static gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 291                       Action *action)
 292 {
 293     guint state, button;
 294     GQuark context;
 295     MouseBinding *b;
 296     GSList *it;
 297     guint i;
 298
 299     if (!translate_button(buttonstr, &state, &button)) {
 300         g_warning("invalid button");
 301         return FALSE;
 302     }
 303
 304     context = g_quark_try_string(contextstr);
 305     if (!context) {
 306         g_warning("invalid context");
 307         return FALSE;
 308     }
 309
 310     for (it = g_datalist_id_get_data(&bound_contexts, context);
 311          it != NULL; it = it->next){
 312         b = it->data;
 313         if (b->state == state && b->button == button) {
 314             /* already bound */
 315             if (b->action[mact] != NULL) {
 316                 g_warning("duplicate binding");
 317                 return FALSE;
 318             }
 319             b->action[mact] = action;
 320             return TRUE;
 321         }
 322     }
 323
 324     grab_all_clients(FALSE);
 325
 326     /* add the binding */
 327     b = g_new(MouseBinding, 1);
 328     b->state = state;
 329     b->button = button;
 330     for (i = 0; i < NUM_MOUSEACTION; ++i)
 331         if (i != mact)
 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 }