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/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                 cw = e->data.x.client->frame->area.width;
 212                 ch = e->data.x.client->frame->area.height;
 213                 px = e->data.x.e->xbutton.x_root;
 214                 py = e->data.x.e->xbutton.y_root;
 215                 corner = pick_corner(px, py, cx, cy, cw, ch);
 216             }
 217             button = e->data.x.e->xbutton.button;
 218         }
 219         context = engine_get_context(e->data.x.client,
 220                                      e->data.x.e->xbutton.window);
 221
 222         fire_button(MouseAction_Press, context,
 223                     e->data.x.client, e->data.x.e->xbutton.state,
 224                     e->data.x.e->xbutton.button);
 225
 226         if (context == g_quark_try_string("client")) {
 227             /* Replay the event, so it goes to the client*/
 228             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 229             /* Fall through to the release case! */
 230         } else
 231             break;
 232
 233     case Event_X_ButtonRelease:
 234         context = engine_get_context(e->data.x.client,
 235                                      e->data.x.e->xbutton.window);
 236         if (e->data.x.e->xbutton.button == button) {
 237             /* end drags */
 238             if (drag_used) {
 239                 fire_motion(MouseAction_Motion, context,
 240                             e->data.x.client, e->data.x.e->xbutton.state,
 241                             e->data.x.e->xbutton.button,
 242                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 243                 drag = FALSE;
 244
 245                 lbutton = 0;
 246             } else {
 247                 /* clicks are only valid if its released over the window */
 248                 int junk;
 249                 Window wjunk;
 250                 guint ujunk, b, w, h;
 251                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 252                              &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 253                 if (e->data.x.e->xbutton.x >= (signed)-b &&
 254                     e->data.x.e->xbutton.y >= (signed)-b &&
 255                     e->data.x.e->xbutton.x < (signed)(w+b) &&
 256                     e->data.x.e->xbutton.y < (signed)(h+b)) {
 257                     click =TRUE;
 258                     /* double clicks happen if there were 2 in a row! */
 259                     if (lbutton == button &&
 260                         e->data.x.e->xbutton.time - 300 <= ltime) {
 261                         dclick = TRUE;
 262                         lbutton = 0;
 263                     } else
 264                         lbutton = button;
 265                 } else
 266                     lbutton = 0;
 267             }
 268
 269             button = 0;
 270             ltime = e->data.x.e->xbutton.time;
 271         }
 272         fire_button(MouseAction_Release, context,
 273                     e->data.x.client, e->data.x.e->xbutton.state,
 274                     e->data.x.e->xbutton.button);
 275         if (click)
 276             fire_button(MouseAction_Click, context,
 277                         e->data.x.client, e->data.x.e->xbutton.state,
 278                         e->data.x.e->xbutton.button);
 279         if (dclick)
 280             fire_button(MouseAction_DClick, context,
 281                         e->data.x.client, e->data.x.e->xbutton.state,
 282                         e->data.x.e->xbutton.button);
 283         break;
 284
 285     case Event_X_MotionNotify:
 286         if (button) {
 287             dx = e->data.x.e->xmotion.x_root - px;
 288             dy = e->data.x.e->xmotion.y_root - py;
 289             if (!drag &&
 290                 (ABS(dx) >= drag_threshold || ABS(dy) >= drag_threshold))
 291                 drag = TRUE;
 292             if (drag) {
 293                 context = engine_get_context(e->data.x.client,
 294                                              e->data.x.e->xbutton.window);
 295                 drag_used = fire_motion(MouseAction_Motion, context,
 296                                         e->data.x.client,
 297                                         e->data.x.e->xmotion.state,
 298                                         button, cx, cy, cw, ch, dx, dy,
 299                                         FALSE, corner);
 300             }
 301         }
 302         break;
 303
 304     default:
 305         g_assert_not_reached();
 306     }
 307 }
 308
 309 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 310                Action *action)
 311 {
 312     guint state, button;
 313     GQuark context;
 314     MouseBinding *b;
 315     GSList *it;
 316
 317     if (!translate_button(buttonstr, &state, &button)) {
 318         g_warning("invalid button '%s'", buttonstr);
 319         return FALSE;
 320     }
 321
 322     contextstr = g_ascii_strdown(contextstr, -1);
 323     context = g_quark_try_string(contextstr);
 324     if (!context) {
 325         g_warning("invalid context '%s'", contextstr);
 326         g_free(contextstr);
 327         return FALSE;
 328     }
 329     g_free(contextstr);
 330
 331     for (it = g_datalist_id_get_data(&bound_contexts, context);
 332          it != NULL; it = it->next){
 333         b = it->data;
 334         if (b->state == state && b->button == button) {
 335             /* already bound */
 336             if (b->action[mact] != NULL) {
 337                 g_warning("duplicate binding");
 338                 return FALSE;
 339             }
 340             b->action[mact] = action;
 341             return TRUE;
 342         }
 343     }
 344
 345     grab_all_clients(FALSE);
 346
 347     /* add the binding */
 348     b = g_new0(MouseBinding, 1);
 349     b->state = state;
 350     b->button = button;
 351     b->action[mact] = action;
 352     g_datalist_id_set_data(&bound_contexts, context,
 353         g_slist_append(g_datalist_id_get_data(&bound_contexts, context), b));
 354
 355     grab_all_clients(TRUE);
 356
 357     return TRUE;
 358 }
 359
 360 void plugin_startup()
 361 {
 362     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 363                       Event_X_ButtonPress | Event_X_ButtonRelease |
 364                       Event_X_MotionNotify, (EventHandler)event, NULL);
 365
 366     mouserc_parse();
 367 }
 368
 369 void plugin_shutdown()
 370 {
 371     dispatch_register(0, (EventHandler)event, NULL);
 372
 373     grab_all_clients(FALSE);
 374     g_datalist_foreach(&bound_contexts, foreach_clear, NULL);
 375 }