plugins/mouse/mouse.c

   1 #include "../../kernel/openbox.h"
   2 #include "../../kernel/dispatch.h"
   3 #include "../../kernel/action.h"
   4 #include "../../kernel/event.h"
   5 #include "../../kernel/client.h"
   6 #include "../../kernel/frame.h"
   7 #include "../../kernel/grab.h"
   8 #include "../../kernel/engine.h"
   9 #include "translate.h"
  10 #include "mouse.h"
  11 #include "mouserc_parse.h"
  12 #include <glib.h>
  13
  14 void plugin_setup_config()
  15 {
  16 }
  17
  18 static int drag_threshold = 3;
  19
  20 /* GData of GSList*s of PointerBinding*s. */
  21 static GData *bound_contexts;
  22
  23 struct foreach_grab_temp {
  24     Client *client;
  25     gboolean grab;
  26 };
  27
  28 static void foreach_grab(GQuark key, gpointer data, gpointer user_data)
  29 {
  30     struct foreach_grab_temp *d = user_data;
  31     GSList *it;
  32     for (it = data; it != NULL; it = it->next) {
  33         /* grab/ungrab the button */
  34         MouseBinding *b = it->data;
  35         Window win;
  36         int mode;
  37         unsigned int mask;
  38
  39         if (key == g_quark_try_string("frame")) {
  40             win = d->client->frame->window;
  41             mode = GrabModeAsync;
  42             mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  43         } else if (key == g_quark_try_string("client")) {
  44             win = d->client->frame->plate;
  45             mode = GrabModeSync; /* this is handled in event */
  46             mask = ButtonPressMask; /* can't catch more than this with Sync
  47                                        mode the release event is manufactured
  48                                        in event */
  49         } else return;
  50
  51         if (d->grab)
  52             grab_button(b->button, b->state, win, mask, mode);
  53         else
  54             ungrab_button(b->button, b->state, win);
  55     }
  56 }
  57
  58 static void grab_for_client(Client *client, gboolean grab)
  59 {
  60     struct foreach_grab_temp bt;
  61     bt.client = client;
  62     bt.grab = grab;
  63     g_datalist_foreach(&bound_contexts, foreach_grab, &bt);
  64 }
  65
  66 static void grab_all_clients(gboolean grab)
  67 {
  68     GSList *it;
  69
  70     for (it = client_list; it != NULL; it = it->next)
  71         grab_for_client(it->data, grab);
  72 }
  73
  74 static void foreach_clear(GQuark key, gpointer data, gpointer user_data)
  75 {
  76     GSList *it;
  77     user_data = user_data;
  78     for (it = data; it != NULL; it = it->next) {
  79         int i;
  80
  81         MouseBinding *b = it->data;
  82         for (i = 0; i < NUM_MOUSEACTION; ++i)
  83             if (b->action[i] != NULL)
  84                 action_free(b->action[i]);
  85         g_free(b);
  86     }
  87     g_slist_free(data);
  88 }
  89
  90 static void fire_button(MouseAction a, GQuark context, Client *c, guint state,
  91                         guint button)
  92 {
  93     GSList *it;
  94     MouseBinding *b;
  95
  96     for (it = g_datalist_id_get_data(&bound_contexts, context);
  97          it != NULL; it = it->next) {
  98         b = it->data;
  99         if (b->state == state && b->button == button)
 100             break;
 101     }
 102     /* if not bound, then nothing to do! */
 103     if (it == NULL) return;
 104
 105     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 106         b->action[a]->data.any.c = c;
 107
 108         g_assert(!(b->action[a]->func == action_move ||
 109                    b->action[a]->func == action_resize));
 110
 111         b->action[a]->func(&b->action[a]->data);
 112     }
 113 }
 114
 115 /* corner should be the opposite corner of the window in which the pointer
 116    clicked, Corner_TopLeft if a good default if there is no client
 117    Returns True or False for if a binding existed for the action or not.
 118 */
 119 static gboolean fire_motion(MouseAction a, GQuark context, Client *c,
 120                             guint state, guint button, int cx, int cy,
 121                             int cw, int ch, int dx, int dy,
 122                             gboolean final, Corner corner)
 123 {
 124     GSList *it;
 125     MouseBinding *b;
 126
 127     for (it = g_datalist_id_get_data(&bound_contexts, context);
 128          it != NULL; it = it->next) {
 129         b = it->data;
 130         if (b->state == state && b->button == button)
 131                 break;
 132     }
 133     /* if not bound, then nothing to do! */
 134     if (it == NULL) return FALSE;
 135
 136     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 137         b->action[a]->data.any.c = c;
 138
 139         if (b->action[a]->func == action_move) {
 140             b->action[a]->data.move.x = cx + dx;
 141             b->action[a]->data.move.y = cy + dy;
 142             b->action[a]->data.move.final = final;
 143         } else if (b->action[a]->func == action_resize) {
 144             b->action[a]->data.resize.corner = corner;
 145             switch (corner) {
 146             case Corner_TopLeft:
 147                 b->action[a]->data.resize.x = cw + dx;
 148                 b->action[a]->data.resize.y = ch + dy;
 149                 break;
 150             case Corner_TopRight:
 151                 b->action[a]->data.resize.x = cw - dx;
 152                 b->action[a]->data.resize.y = ch + dy;
 153                 break;
 154             case Corner_BottomLeft:
 155                 b->action[a]->data.resize.x = cw + dx;
 156                 b->action[a]->data.resize.y = ch - dy;
 157                 break;
 158             case Corner_BottomRight:
 159                 b->action[a]->data.resize.x = cw - dx;
 160                 b->action[a]->data.resize.y = ch - dy;
 161                 break;
 162             }
 163             b->action[a]->data.resize.final = final;
 164         }
 165         b->action[a]->func(&b->action[a]->data);
 166         return TRUE;
 167     }
 168     return FALSE;
 169 }
 170
 171 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 172 {
 173     if (x - cx < cw / 2) {
 174         if (y - cy < ch / 2)
 175             return Corner_BottomRight;
 176         else
 177             return Corner_TopRight;
 178     } else {
 179         if (y - cy < ch / 2)
 180             return Corner_BottomLeft;
 181         else
 182             return Corner_TopLeft;
 183     }
 184 }
 185
 186 static void event(ObEvent *e, void *foo)
 187 {
 188     static Time ltime;
 189     static int px, py, cx, cy, cw, ch, dx, dy;
 190     static guint button = 0, lbutton = 0;
 191     static gboolean drag = FALSE, drag_used = FALSE;
 192     static Corner corner = Corner_TopLeft;
 193     gboolean click = FALSE;
 194     gboolean dclick = FALSE;
 195     GQuark context;
 196
 197     switch (e->type) {
 198     case Event_Client_Mapped:
 199         grab_for_client(e->data.c.client, TRUE);
 200         break;
 201
 202     case Event_Client_Destroy:
 203         grab_for_client(e->data.c.client, FALSE);
 204         break;
 205
 206     case Event_X_ButtonPress:
 207         if (!button) {
 208             if (e->data.x.client != NULL) {
 209                 cx = e->data.x.client->frame->area.x;
 210                 cy = e->data.x.client->frame->area.y;
 211                 /* use the client size because the frame can be differently
 212                    sized (shaded windows) and we want this based on the clients
 213                    size */
 214                 cw = e->data.x.client->area.width +
 215                     e->data.x.client->frame->size.left +
 216                     e->data.x.client->frame->size.right;
 217                 ch = e->data.x.client->area.height +
 218                     e->data.x.client->frame->size.top +
 219                     e->data.x.client->frame->size.bottom;
 220                 px = e->data.x.e->xbutton.x_root;
 221                 py = e->data.x.e->xbutton.y_root;
 222                 corner = pick_corner(px, py, cx, cy, cw, ch);
 223             }
 224             button = e->data.x.e->xbutton.button;
 225         }
 226         context = engine_get_context(e->data.x.client,
 227                                      e->data.x.e->xbutton.window);
 228
 229         fire_button(MouseAction_Press, context,
 230                     e->data.x.client, e->data.x.e->xbutton.state,
 231                     e->data.x.e->xbutton.button);
 232
 233         if (context == g_quark_try_string("client")) {
 234             /* Replay the event, so it goes to the client*/
 235             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 236             /* Fall through to the release case! */
 237         } else
 238             break;
 239
 240     case Event_X_ButtonRelease:
 241         context = engine_get_context(e->data.x.client,
 242                                      e->data.x.e->xbutton.window);
 243         if (e->data.x.e->xbutton.button == button) {
 244             /* end drags */
 245             if (drag_used) {
 246                 fire_motion(MouseAction_Motion, context,
 247                             e->data.x.client, e->data.x.e->xbutton.state,
 248                             e->data.x.e->xbutton.button,
 249                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 250                 drag = drag_used = FALSE;
 251
 252                 lbutton = 0;
 253             } else {
 254                 /* clicks are only valid if its released over the window */
 255                 int junk;
 256                 Window wjunk;
 257                 guint ujunk, b, w, h;
 258                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 259                              &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 260                 if (e->data.x.e->xbutton.x >= (signed)-b &&
 261                     e->data.x.e->xbutton.y >= (signed)-b &&
 262                     e->data.x.e->xbutton.x < (signed)(w+b) &&
 263                     e->data.x.e->xbutton.y < (signed)(h+b)) {
 264                     click = TRUE;
 265                     /* double clicks happen if there were 2 in a row! */
 266                     if (lbutton == button &&
 267                         e->data.x.e->xbutton.time - 300 <= ltime) {
 268                         dclick = TRUE;
 269                         lbutton = 0;
 270                     } else
 271                         lbutton = button;
 272                 } else
 273                     lbutton = 0;
 274             }
 275
 276             button = 0;
 277             ltime = e->data.x.e->xbutton.time;
 278         }
 279         fire_button(MouseAction_Release, context,
 280                     e->data.x.client, e->data.x.e->xbutton.state,
 281                     e->data.x.e->xbutton.button);
 282         if (click)
 283             fire_button(MouseAction_Click, context,
 284                         e->data.x.client, e->data.x.e->xbutton.state,
 285                         e->data.x.e->xbutton.button);
 286         if (dclick)
 287             fire_button(MouseAction_DClick, context,
 288                         e->data.x.client, e->data.x.e->xbutton.state,
 289                         e->data.x.e->xbutton.button);
 290         break;
 291
 292     case Event_X_MotionNotify:
 293         if (button) {
 294             dx = e->data.x.e->xmotion.x_root - px;
 295             dy = e->data.x.e->xmotion.y_root - py;
 296             if (!drag &&
 297                 (ABS(dx) >= drag_threshold || ABS(dy) >= drag_threshold))
 298                 drag = TRUE;
 299             if (drag) {
 300                 context = engine_get_context(e->data.x.client,
 301                                              e->data.x.e->xbutton.window);
 302                 drag_used = fire_motion(MouseAction_Motion, context,
 303                                         e->data.x.client,
 304                                         e->data.x.e->xmotion.state,
 305                                         button, cx, cy, cw, ch, dx, dy,
 306                                         FALSE, corner);
 307             }
 308         }
 309         break;
 310
 311     default:
 312         g_assert_not_reached();
 313     }
 314 }
 315
 316 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 317                Action *action)
 318 {
 319     guint state, button;
 320     GQuark context;
 321     MouseBinding *b;
 322     GSList *it;
 323
 324     if (!translate_button(buttonstr, &state, &button)) {
 325         g_warning("invalid button '%s'", buttonstr);
 326         return FALSE;
 327     }
 328
 329     contextstr = g_ascii_strdown(contextstr, -1);
 330     context = g_quark_try_string(contextstr);
 331     if (!context) {
 332         g_warning("invalid context '%s'", contextstr);
 333         g_free(contextstr);
 334         return FALSE;
 335     }
 336     g_free(contextstr);
 337
 338     for (it = g_datalist_id_get_data(&bound_contexts, context);
 339          it != NULL; it = it->next){
 340         b = it->data;
 341         if (b->state == state && b->button == button) {
 342             /* already bound */
 343             if (b->action[mact] != NULL) {
 344                 g_warning("duplicate binding");
 345                 return FALSE;
 346             }
 347             b->action[mact] = action;
 348             return TRUE;
 349         }
 350     }
 351
 352     grab_all_clients(FALSE);
 353
 354     /* add the binding */
 355     b = g_new0(MouseBinding, 1);
 356     b->state = state;
 357     b->button = button;
 358     b->action[mact] = action;
 359     g_datalist_id_set_data(&bound_contexts, context,
 360         g_slist_append(g_datalist_id_get_data(&bound_contexts, context), b));
 361
 362     grab_all_clients(TRUE);
 363
 364     return TRUE;
 365 }
 366
 367 void plugin_startup()
 368 {
 369     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 370                       Event_X_ButtonPress | Event_X_ButtonRelease |
 371                       Event_X_MotionNotify, (EventHandler)event, NULL);
 372
 373     mouserc_parse();
 374 }
 375
 376 void plugin_shutdown()
 377 {
 378     dispatch_register(0, (EventHandler)event, NULL);
 379
 380     grab_all_clients(FALSE);
 381     g_datalist_foreach(&bound_contexts, foreach_clear, NULL);
 382 }