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 "kernel/parse.h"
  10 #include "kernel/frame.h"
  11 #include "translate.h"
  12 #include "mouse.h"
  13 #include "mouseparse.h"
  14 #include <glib.h>
  15
  16 static int threshold;
  17 static int dclicktime;
  18
  19 static void parse_assign(char *name, ParseToken *value)
  20 {
  21     if (!g_ascii_strcasecmp(name, "dragthreshold")) {
  22         if (value->type != TOKEN_INTEGER)
  23             yyerror("invalid value");
  24         else {
  25             if (value->data.integer >= 0)
  26                 threshold = value->data.integer;
  27         }
  28     } else if (!g_ascii_strcasecmp(name, "doubleclicktime")) {
  29         if (value->type != TOKEN_INTEGER)
  30             yyerror("invalid value");
  31         else {
  32             if (value->data.integer >= 0)
  33                 dclicktime = value->data.integer;
  34         }
  35     } else
  36         yyerror("invalid option");
  37     parse_free_token(value);
  38 }
  39
  40 void plugin_setup_config()
  41 {
  42     threshold = 3;
  43     dclicktime = 200;
  44     parse_reg_section("mouse", mouseparse, parse_assign);
  45 }
  46
  47 /* Array of GSList*s of PointerBinding*s. */
  48 static GSList *bound_contexts[NUM_CONTEXTS];
  49
  50 static void grab_for_client(Client *client, gboolean grab)
  51 {
  52     int i;
  53     GSList *it;
  54
  55     for (i = 0; i < NUM_CONTEXTS; ++i)
  56         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  57             /* grab/ungrab the button */
  58             MouseBinding *b = it->data;
  59             Window win;
  60             int mode;
  61             unsigned int mask;
  62
  63             if (i == Context_Frame) {
  64                 win = client->frame->window;
  65                 mode = GrabModeAsync;
  66                 mask = ButtonPressMask | ButtonMotionMask | ButtonReleaseMask;
  67             } else if (i == Context_Client) {
  68                 win = client->frame->plate;
  69                 mode = GrabModeSync; /* this is handled in event */
  70                 mask = ButtonPressMask; /* can't catch more than this with Sync
  71                                            mode the release event is
  72                                            manufactured in event() */
  73             } else continue;
  74
  75             if (grab)
  76                 grab_button(b->button, b->state, win, mask, mode);
  77             else
  78                 ungrab_button(b->button, b->state, win);
  79         }
  80 }
  81
  82 static void grab_all_clients(gboolean grab)
  83 {
  84     GList *it;
  85
  86     for (it = client_list; it != NULL; it = it->next)
  87         grab_for_client(it->data, grab);
  88 }
  89
  90 static void clearall()
  91 {
  92     int i;
  93     GSList *it;
  94
  95     for(i = 0; i < NUM_CONTEXTS; ++i) {
  96         for (it = bound_contexts[i]; it != NULL; it = it->next) {
  97             int j;
  98
  99             MouseBinding *b = it->data;
 100             for (j = 0; j < NUM_MOUSEACTION; ++j)
 101                 if (b->action[j] != NULL)
 102                     action_free(b->action[j]);
 103             g_free(b);
 104         }
 105         g_slist_free(bound_contexts[i]);
 106     }
 107 }
 108
 109 static void fire_button(MouseAction a, Context context, Client *c, guint state,
 110                         guint button)
 111 {
 112     GSList *it;
 113     MouseBinding *b;
 114
 115     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 116         b = it->data;
 117         if (b->state == state && b->button == button)
 118             break;
 119     }
 120     /* if not bound, then nothing to do! */
 121     if (it == NULL) return;
 122
 123     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 124         b->action[a]->data.any.c = c;
 125
 126         g_assert(!(b->action[a]->func == action_move ||
 127                    b->action[a]->func == action_resize));
 128
 129         b->action[a]->func(&b->action[a]->data);
 130     }
 131 }
 132
 133 /* corner should be the opposite corner of the window in which the pointer
 134    clicked, Corner_TopLeft if a good default if there is no client
 135    Returns True or False for if a binding existed for the action or not.
 136 */
 137 static gboolean fire_motion(MouseAction a, Context context, Client *c,
 138                             guint state, guint button, int cx, int cy,
 139                             int cw, int ch, int dx, int dy,
 140                             gboolean final, Corner corner)
 141 {
 142     GSList *it;
 143     MouseBinding *b;
 144
 145     for (it = bound_contexts[context]; it != NULL; it = it->next) {
 146         b = it->data;
 147         if (b->state == state && b->button == button)
 148                 break;
 149     }
 150     /* if not bound, then nothing to do! */
 151     if (it == NULL) return FALSE;
 152
 153     if (b->action[a] != NULL && b->action[a]->func != NULL) {
 154         b->action[a]->data.any.c = c;
 155
 156         if (b->action[a]->func == action_move) {
 157             b->action[a]->data.move.x = cx + dx;
 158             b->action[a]->data.move.y = cy + dy;
 159             b->action[a]->data.move.final = final;
 160         } else if (b->action[a]->func == action_resize) {
 161             b->action[a]->data.resize.corner = corner;
 162             switch (corner) {
 163             case Corner_TopLeft:
 164                 b->action[a]->data.resize.x = cw + dx;
 165                 b->action[a]->data.resize.y = ch + dy;
 166                 break;
 167             case Corner_TopRight:
 168                 b->action[a]->data.resize.x = cw - dx;
 169                 b->action[a]->data.resize.y = ch + dy;
 170                 break;
 171             case Corner_BottomLeft:
 172                 b->action[a]->data.resize.x = cw + dx;
 173                 b->action[a]->data.resize.y = ch - dy;
 174                 break;
 175             case Corner_BottomRight:
 176                 b->action[a]->data.resize.x = cw - dx;
 177                 b->action[a]->data.resize.y = ch - dy;
 178                 break;
 179             }
 180             b->action[a]->data.resize.final = final;
 181         }
 182         b->action[a]->func(&b->action[a]->data);
 183         return TRUE;
 184     }
 185     return FALSE;
 186 }
 187
 188 static Corner pick_corner(int x, int y, int cx, int cy, int cw, int ch)
 189 {
 190     if (x - cx < cw / 2) {
 191         if (y - cy < ch / 2)
 192             return Corner_BottomRight;
 193         else
 194             return Corner_TopRight;
 195     } else {
 196         if (y - cy < ch / 2)
 197             return Corner_BottomLeft;
 198         else
 199             return Corner_TopLeft;
 200     }
 201 }
 202
 203 static void event(ObEvent *e, void *foo)
 204 {
 205     static Time ltime;
 206     static int px, py, cx, cy, cw, ch, dx, dy;
 207     static guint button = 0, lbutton = 0;
 208     static gboolean drag = FALSE, drag_used = FALSE;
 209     static Corner corner = Corner_TopLeft;
 210     gboolean click = FALSE;
 211     gboolean dclick = FALSE;
 212     Context context;
 213
 214     switch (e->type) {
 215     case Event_Client_Mapped:
 216         grab_for_client(e->data.c.client, TRUE);
 217         break;
 218
 219     case Event_Client_Destroy:
 220         grab_for_client(e->data.c.client, FALSE);
 221         break;
 222
 223     case Event_X_ButtonPress:
 224         if (!button) {
 225             if (e->data.x.client != NULL) {
 226                 cx = e->data.x.client->frame->area.x;
 227                 cy = e->data.x.client->frame->area.y;
 228                 /* use the client size because the frame can be differently
 229                    sized (shaded windows) and we want this based on the clients
 230                    size */
 231                 cw = e->data.x.client->area.width +
 232                     e->data.x.client->frame->size.left +
 233                     e->data.x.client->frame->size.right;
 234                 ch = e->data.x.client->area.height +
 235                     e->data.x.client->frame->size.top +
 236                     e->data.x.client->frame->size.bottom;
 237                 px = e->data.x.e->xbutton.x_root;
 238                 py = e->data.x.e->xbutton.y_root;
 239                 corner = pick_corner(px, py, cx, cy, cw, ch);
 240             }
 241             button = e->data.x.e->xbutton.button;
 242         }
 243         context = engine_get_context(e->data.x.client,
 244                                      e->data.x.e->xbutton.window);
 245
 246         fire_button(MouseAction_Press, context,
 247                     e->data.x.client, e->data.x.e->xbutton.state,
 248                     e->data.x.e->xbutton.button);
 249
 250         if (context == Context_Client) {
 251             /* Replay the event, so it goes to the client*/
 252             XAllowEvents(ob_display, ReplayPointer, event_lasttime);
 253             /* Fall through to the release case! */
 254         } else
 255             break;
 256
 257     case Event_X_ButtonRelease:
 258         context = engine_get_context(e->data.x.client,
 259                                      e->data.x.e->xbutton.window);
 260         if (e->data.x.e->xbutton.button == button) {
 261             /* end drags */
 262             if (drag_used) {
 263                 fire_motion(MouseAction_Motion, context,
 264                             e->data.x.client, e->data.x.e->xbutton.state,
 265                             e->data.x.e->xbutton.button,
 266                             cx, cy, cw, ch, dx, dy, TRUE, corner);
 267                 drag = drag_used = FALSE;
 268
 269                 lbutton = 0;
 270             } else {
 271                 /* clicks are only valid if its released over the window */
 272                 int junk;
 273                 Window wjunk;
 274                 guint ujunk, b, w, h;
 275                 XGetGeometry(ob_display, e->data.x.e->xbutton.window,
 276                              &wjunk, &junk, &junk, &w, &h, &b, &ujunk);
 277                 if (e->data.x.e->xbutton.x >= (signed)-b &&
 278                     e->data.x.e->xbutton.y >= (signed)-b &&
 279                     e->data.x.e->xbutton.x < (signed)(w+b) &&
 280                     e->data.x.e->xbutton.y < (signed)(h+b)) {
 281                     click = TRUE;
 282                     /* double clicks happen if there were 2 in a row! */
 283                     if (lbutton == button &&
 284                         e->data.x.e->xbutton.time - dclicktime <= ltime) {
 285                         dclick = TRUE;
 286                         lbutton = 0;
 287                     } else
 288                         lbutton = button;
 289                 } else
 290                     lbutton = 0;
 291             }
 292
 293             button = 0;
 294             ltime = e->data.x.e->xbutton.time;
 295         }
 296         fire_button(MouseAction_Release, context,
 297                     e->data.x.client, e->data.x.e->xbutton.state,
 298                     e->data.x.e->xbutton.button);
 299         if (click)
 300             fire_button(MouseAction_Click, context,
 301                         e->data.x.client, e->data.x.e->xbutton.state,
 302                         e->data.x.e->xbutton.button);
 303         if (dclick)
 304             fire_button(MouseAction_DClick, context,
 305                         e->data.x.client, e->data.x.e->xbutton.state,
 306                         e->data.x.e->xbutton.button);
 307         break;
 308
 309     case Event_X_MotionNotify:
 310         if (button) {
 311             dx = e->data.x.e->xmotion.x_root - px;
 312             dy = e->data.x.e->xmotion.y_root - py;
 313             if (!drag &&
 314                 (ABS(dx) >= threshold || ABS(dy) >= threshold))
 315                 drag = TRUE;
 316             if (drag) {
 317                 context = engine_get_context(e->data.x.client,
 318                                              e->data.x.e->xbutton.window);
 319                 drag_used = fire_motion(MouseAction_Motion, context,
 320                                         e->data.x.client,
 321                                         e->data.x.e->xmotion.state,
 322                                         button, cx, cy, cw, ch, dx, dy,
 323                                         FALSE, corner);
 324             }
 325         }
 326         break;
 327
 328     default:
 329         g_assert_not_reached();
 330     }
 331 }
 332
 333 gboolean mbind(char *buttonstr, char *contextstr, MouseAction mact,
 334                Action *action)
 335 {
 336     guint state, button;
 337     Context context;
 338     MouseBinding *b;
 339     GSList *it;
 340
 341     if (!translate_button(buttonstr, &state, &button)) {
 342         g_warning("invalid button '%s'", buttonstr);
 343         return FALSE;
 344     }
 345
 346     contextstr = g_ascii_strdown(contextstr, -1);
 347     context = frame_context_from_string(contextstr);
 348     if (!context) {
 349         g_warning("invalid context '%s'", contextstr);
 350         g_free(contextstr);
 351         return FALSE;
 352     }
 353     g_free(contextstr);
 354
 355     for (it = bound_contexts[context]; it != NULL; it = it->next){
 356         b = it->data;
 357         if (b->state == state && b->button == button) {
 358             /* already bound */
 359             if (b->action[mact] != NULL) {
 360                 g_warning("duplicate binding");
 361                 return FALSE;
 362             }
 363             b->action[mact] = action;
 364             return TRUE;
 365         }
 366     }
 367
 368     grab_all_clients(FALSE);
 369
 370     /* add the binding */
 371     b = g_new0(MouseBinding, 1);
 372     b->state = state;
 373     b->button = button;
 374     b->action[mact] = action;
 375     bound_contexts[context] = g_slist_append(bound_contexts[context], b);
 376
 377     grab_all_clients(TRUE);
 378
 379     return TRUE;
 380 }
 381
 382 void plugin_startup()
 383 {
 384     dispatch_register(Event_Client_Mapped | Event_Client_Destroy |
 385                       Event_X_ButtonPress | Event_X_ButtonRelease |
 386                       Event_X_MotionNotify, (EventHandler)event, NULL);
 387 }
 388
 389 void plugin_shutdown()
 390 {
 391     dispatch_register(0, (EventHandler)event, NULL);
 392
 393     grab_all_clients(FALSE);
 394     clearall();
 395 }