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 static void fire_motion(MouseAction a, GQuark context, Client *c, guint state,
 118                         guint button, int cx, int cy, int cw, int ch,
 119                         int dx, int dy, gboolean final, Corner corner)
 120 {
 121     GSList *it;
 122     MouseBinding *b;
 123
 124     for (it = g_datalist_id_get_data(&bound_contexts, context);
 125          it != NULL; it = it->next) {
 126         b = it->data;
 127         if (b->state == state && b->button == button)
 128                 break;
 129     }
 130     /* if not bound, then nothing to do! */
 131     if (it == NULL) return;
 132
 133     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 134         b->action[a]->data.any.c = c;
 135
 136         if (b->action[a]->func == action_move) {
 137             b->action[a]->data.move.x = cx + dx;
 138             b->action[a]->data.move.y = cy + dy;
 139             b->action[a]->data.move.final = final;
 140         } else if (b->action[a]->func == action_resize) {
 141             b->action[a]->data.resize.corner = corner;
 142             switch (corner) {
 143             case Corner_TopLeft:
 144                 b->action[a]->data.resize.x = cw + dx;
 145                 b->action[a]->data.resize.y = ch + dy;
 146                 break;
 147             case Corner_TopRight:
 148                 b->action[a]->data.resize.x = cw - dx;
 149                 b->action[a]->data.resize.y = ch + dy;
 150                 break;
 151             case Corner_BottomLeft:
 152                 b->action[a]->data.resize.x = cw + dx;
 153                 b->action[a]->data.resize.y = ch - dy;
 154                 break;
 155             case Corner_BottomRight:
 156                 b->action[a]->data.resize.x = cw - dx;
 157                 b->action[a]->data.resize.y = ch - dy;
 158                 break;
 159             }
 160             b->action[a]->data.resize.final = final;
 161         }
 162         b->action[a]->func(&b->action[a]->data);
 163     }
 164 }
 165
 166 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 167 {
 168     if (x - cx < cw / 2) {
 169         if (y - cy < ch / 2)
 170             return Corner_BottomRight;
 171         else
 172             return Corner_TopRight;
 173     } else {
 174         if (y - cy < ch / 2)
 175             return Corner_BottomLeft;
 176         else
 177             return Corner_TopLeft;
 178     }
 179 }
 180
 181 static void event(ObEvent *e, void *foo)
 182 {
 183     static Time ltime;
 184     static int px, py, cx, cy, cw, ch, dx, dy;
 185     static guint button = 0, lbutton = 0;
 186     static gboolean drag = FALSE;
 187     static Corner corner = Corner_TopLeft;
 188     gboolean click = FALSE;
 189     gboolean dclick = FALSE;
 190     GQuark context;
 191
 192     switch (e->type) {
 193     case Event_Client_Mapped:
 194         grab_for_client(e->data.c.client, TRUE);
 195         break;
 196
 197     case Event_Client_Destroy:
 198         grab_for_client(e->data.c.client, FALSE);
 199         break;
 200
 201     case Event_X_ButtonPress:
 202         if (!button) {
 203             if (e->data.x.client != NULL) {
 204                 cx = e->data.x.client->frame->area.x;
 205                 cy = e->data.x.client->frame->area.y;
 206                 cw = e->data.x.client->frame->area.width;
 207                 ch = e->data.x.client->frame->area.height;
 208                 px = e->data.x.e->xbutton.x_root;
 209                 py = e->data.x.e->xbutton.y_root;
 210                 corner = pick_corner(px, py, cx, cy, cw, ch);
 211             }
 212             button = e->data.x.e->xbutton.button;
 213         }
 214         context = engine_get_context(e->data.x.client,
 215                                      e->data.x.e->xbutton.window);
 216
 217         fire_button(MouseAction_Press, context,
 218                     e->data.x.client, e->data.x.e->xbutton.state,
 219                     e->data.x.e->xbutton.button);
 220
 221         if (context == g_quark_try_string("client")) {
 222             /* Replay the event, so it goes to the client*/
 223             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 224             /* Fall through to the release case! */
 225         } else
 226             break;
 227
 228     case Event_X_ButtonRelease:
 229         context = engine_get_context(e->data.x.client,
 230                                      e->data.x.e->xbutton.window);
 231         if (e->data.x.e->xbutton.button == button) {
 232             /* end drags */
 233             if (drag) {
 234                 fire_motion(MouseAction_Motion, context,
 235                             e->data.x.client, e->data.x.e->xbutton.state,
 236                             e->data.x.e->xbutton.button,
 237                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 238                 drag = FALSE;
 239
 240                 lbutton = 0;
 241             } else {
 242                 /* clicks are only valid if its released over the window */
 243                 if (e->data.x.e->xbutton.x >= 0 &&
 244                     e->data.x.e->xbutton.y >= 0) {
 245                     int junk;
 246                     Window wjunk;
 247                     guint ujunk, w, h;
 248                     XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 249                                  &wjunk, &junk, &junk, &w, &h, &ujunk, &ujunk);
 250                     if (e->data.x.e->xbutton.x < (signed)w &&
 251                         e->data.x.e->xbutton.y < (signed)h) {
 252                         click =TRUE;
 253                         /* double clicks happen if there were 2 in a row! */
 254                         if (lbutton == button &&
 255                             e->data.x.e->xbutton.time - 300 <= ltime)
 256                             dclick = TRUE;
 257                     }
 258                     lbutton = button;
 259                 } else
 260                     lbutton = 0;
 261             }
 262
 263             button = 0;
 264             ltime = e->data.x.e->xbutton.time;
 265         }
 266         fire_button(MouseAction_Press, context,
 267                     e->data.x.client, e->data.x.e->xbutton.state,
 268                     e->data.x.e->xbutton.button);
 269         if (click)
 270             fire_button(MouseAction_Click, context,
 271                         e->data.x.client, e->data.x.e->xbutton.state,
 272                         e->data.x.e->xbutton.button);
 273         if (dclick)
 274             fire_button(MouseAction_DClick, context,
 275                         e->data.x.client, e->data.x.e->xbutton.state,
 276                         e->data.x.e->xbutton.button);
 277         break;
 278
 279     case Event_X_MotionNotify:
 280         if (button) {
 281             dx = e->data.x.e->xmotion.x_root - px;
 282             dy = e->data.x.e->xmotion.y_root - py;
 283             if (ABS(dx) >= drag_threshold || ABS(dy) >= drag_threshold)
 284                 drag = TRUE;
 285             if (drag) {
 286                 context = engine_get_context(e->data.x.client,
 287                                              e->data.x.e->xbutton.window);
 288                 fire_motion(MouseAction_Motion, context,
 289                             e->data.x.client, e->data.x.e->xmotion.state,
 290                             button, cx, cy, cw, ch, dx, dy, FALSE, corner);
 291             }
 292         }
 293         break;
 294
 295     default:
 296         g_assert_not_reached();
 297     }
 298 }
 299
 300 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 301                Action *action)
 302 {
 303     guint state, button;
 304     GQuark context;
 305     MouseBinding *b;
 306     GSList *it;
 307
 308     if (!translate_button(buttonstr, &state, &button)) {
 309         g_warning("invalid button '%s'", buttonstr);
 310         return FALSE;
 311     }
 312
 313     contextstr = g_ascii_strdown(contextstr, -1);
 314     context = g_quark_try_string(contextstr);
 315     if (!context) {
 316         g_warning("invalid context '%s'", contextstr);
 317         g_free(contextstr);
 318         return FALSE;
 319     }
 320     g_free(contextstr);
 321
 322     for (it = g_datalist_id_get_data(&bound_contexts, context);
 323          it != NULL; it = it->next){
 324         b = it->data;
 325         if (b->state == state && b->button == button) {
 326             /* already bound */
 327             if (b->action[mact] != NULL) {
 328                 g_warning("duplicate binding");
 329                 return FALSE;
 330             }
 331             b->action[mact] = action;
 332             return TRUE;
 333         }
 334     }
 335
 336     grab_all_clients(FALSE);
 337
 338     /* add the binding */
 339     b = g_new0(MouseBinding, 1);
 340     b->state = state;
 341     b->button = button;
 342     b->action[mact] = action;
 343     g_datalist_id_set_data(&bound_contexts, context,
 344         g_slist_append(g_datalist_id_get_data(&bound_contexts, context), b));
 345
 346     grab_all_clients(TRUE);
 347
 348     return TRUE;
 349 }
 350
 351 void plugin_startup()
 352 {
 353     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 354                       Event_X_ButtonPress | Event_X_ButtonRelease |
 355                       Event_X_MotionNotify, (EventHandler)event, NULL);
 356
 357     mouserc_parse();
 358 }
 359
 360 void plugin_shutdown()
 361 {
 362     dispatch_register(0, (EventHandler)event, NULL);
 363
 364     grab_all_clients(FALSE);
 365     g_datalist_foreach(&bound_contexts, foreach_clear, NULL);
 366 }