titlebar.c

   1 /*
   2  * titlebar.c - titlebar management
   3  *
   4  * Copyright © 2008-2009 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <xcb/xcb.h>
  23
  24 #include "titlebar.h"
  25 #include "client.h"
  26 #include "widget.h"
  27 #include "wibox.h"
  28 #include "screen.h"
  29 #include "luaa.h"
  30
  31 /** Get a client by its titlebar.
  32  * \param titlebar The titlebar.
  33  * \return A client.
  34  */
  35 client_t *
  36 client_getbytitlebar(wibox_t *titlebar)
  37 {
  38     foreach(c, globalconf.clients)
  39         if((*c)->titlebar == titlebar)
  40             return *c;
  41
  42     return NULL;
  43 }
  44
  45 /** Get a client by its titlebar window.
  46  * \param win The window.
  47  * \return A client.
  48  */
  49 client_t *
  50 client_getbytitlebarwin(xcb_window_t win)
  51 {
  52     foreach(c, globalconf.clients)
  53         if((*c)->titlebar && (*c)->titlebar->window == win)
  54             return *c;
  55
  56     return NULL;
  57 }
  58
  59 /** Move a titlebar out of the viewport.
  60  * \param titlebar The titlebar.
  61  */
  62 void
  63 titlebar_ban(wibox_t *titlebar)
  64 {
  65     /* Do it manually because client geometry remains unchanged. */
  66     if(titlebar && !titlebar->isbanned)
  67     {
  68         client_t *c;
  69
  70         if(titlebar->window)
  71             xcb_unmap_window(globalconf.connection, titlebar->window);
  72
  73         /* Remove titlebar geometry from client. */
  74         if((c = client_getbytitlebar(titlebar)))
  75             c->geometry = titlebar_geometry_remove(titlebar, 0, c->geometry);
  76
  77         titlebar->isbanned = true;
  78     }
  79 }
  80
  81 /** Move a titlebar on top of its client.
  82  * \param titlebar The titlebar.
  83  */
  84 void
  85 titlebar_unban(wibox_t *titlebar)
  86 {
  87     /* Do this manually because the system doesn't know we moved the toolbar.
  88      * Note that !visible titlebars are unmapped and for fullscreen it'll
  89      * end up offscreen anyway. */
  90     if(titlebar && titlebar->isbanned)
  91     {
  92         client_t *c;
  93
  94         if(titlebar->window)
  95             xcb_map_window(globalconf.connection, titlebar->window);
  96
  97         titlebar->isbanned = false;
  98
  99         /* Add titlebar geometry from client. */
 100         if((c = client_getbytitlebar(titlebar)))
 101             c->geometry = titlebar_geometry_add(titlebar, 0, c->geometry);
 102     }
 103 }
 104
 105 /** Get titlebar area.
 106  * \param c The client
 107  * \param geometry The client geometry including borders, excluding titlebars.
 108  * \param res Pointer to area of titlebar, must be allocated already.
 109  */
 110 void
 111 titlebar_geometry_compute(client_t *c, area_t geometry, area_t *res)
 112 {
 113     int height, width, x_offset = 0, y_offset = 0;
 114
 115     switch(c->titlebar->position)
 116     {
 117       default:
 118         return;
 119       case Top:
 120         width = MAX(1, geometry.width);
 121         switch(c->titlebar->align)
 122         {
 123           default:
 124             break;
 125           case AlignRight:
 126             x_offset = geometry.width - width;
 127             break;
 128           case AlignCenter:
 129             x_offset = (geometry.width - width) / 2;
 130             break;
 131         }
 132         res->x = geometry.x + x_offset;
 133         res->y = geometry.y - c->titlebar->geometry.height;
 134         res->width = width;
 135         res->height = c->titlebar->geometry.height;
 136         break;
 137       case Bottom:
 138         width = MAX(1, geometry.width);
 139         switch(c->titlebar->align)
 140         {
 141           default:
 142             break;
 143           case AlignRight:
 144             x_offset = geometry.width - width;
 145             break;
 146           case AlignCenter:
 147             x_offset = (geometry.width - width) / 2;
 148             break;
 149         }
 150         res->x = geometry.x + x_offset;
 151         res->y = geometry.y + geometry.height;
 152         res->width = width;
 153         res->height = c->titlebar->geometry.height;
 154         break;
 155       case Left:
 156         height = MAX(1, geometry.height);
 157         switch(c->titlebar->align)
 158         {
 159           default:
 160             break;
 161           case AlignRight:
 162             y_offset = geometry.height - height;
 163             break;
 164           case AlignCenter:
 165             y_offset = (geometry.height - height) / 2;
 166             break;
 167         }
 168         res->x = geometry.x - c->titlebar->geometry.width;
 169         res->y = geometry.y + y_offset;
 170         res->width = c->titlebar->geometry.width;
 171         res->height = height;
 172         break;
 173       case Right:
 174         height = MAX(1, geometry.height);
 175         switch(c->titlebar->align)
 176         {
 177           default:
 178             break;
 179           case AlignRight:
 180             y_offset = geometry.height - height;
 181             break;
 182           case AlignCenter:
 183             y_offset = (geometry.height - height) / 2;
 184             break;
 185         }
 186         res->x = geometry.x + geometry.width;
 187         res->y = geometry.y + y_offset;
 188         res->width = c->titlebar->geometry.width;
 189         res->height = height;
 190         break;
 191     }
 192 }
 193
 194 /** Detach a wibox titlebar from its client.
 195  * \param c The client.
 196  */
 197 void
 198 titlebar_client_detach(client_t *c)
 199 {
 200     /* If client has a titlebar, kick it out. */
 201     if(c && c->titlebar)
 202     {
 203         /* Update client geometry to exclude the titlebar. */
 204         c->geometry = titlebar_geometry_remove(c->titlebar, 0, c->geometry);
 205         wibox_wipe(c->titlebar);
 206         c->titlebar->type = WIBOX_TYPE_NORMAL;
 207         c->titlebar->screen = NULL;
 208
 209         luaA_object_unref(globalconf.L, c->titlebar);
 210         c->titlebar = NULL;
 211
 212         hook_property(c, "titlebar");
 213         luaA_object_push(globalconf.L, c);
 214         luaA_object_emit_signal(globalconf.L, -1, "property::titlebar", 0);
 215         lua_pop(globalconf.L, 1);
 216         client_stack();
 217     }
 218 }
 219
 220 /** Attach a wibox to a client as its titlebar.
 221  * \param c The client.
 222  */
 223 void
 224 titlebar_client_attach(client_t *c)
 225 {
 226     /* check if we can register the object */
 227     wibox_t *t = luaA_object_ref_class(globalconf.L, -1, &wibox_class);
 228
 229     titlebar_client_detach(c);
 230
 231     /* check if titlebar is already on a client */
 232     titlebar_client_detach(client_getbytitlebar(t));
 233
 234     /* check if client already has a titlebar. */
 235     titlebar_client_detach(c);
 236
 237     /* set the object as new client's titlebar */
 238     c->titlebar = t;
 239
 240     t->type = WIBOX_TYPE_TITLEBAR;
 241     t->screen = c->screen;
 242
 243     switch(t->position)
 244     {
 245       case Top:
 246       case Bottom:
 247         if(!t->geometry.height)
 248             t->geometry.height = 1.5 * globalconf.font->height;
 249         break;
 250       case Left:
 251       case Right:
 252         if(!t->geometry.width)
 253             t->geometry.width = 1.5 * globalconf.font->height;
 254         break;
 255     }
 256
 257     /* Update client geometry to include the titlebar. */
 258     c->geometry = titlebar_geometry_add(c->titlebar, 0, c->geometry);
 259
 260     /* Client geometry without titlebar, but including borders, since that is always consistent. */
 261     titlebar_geometry_compute(c, titlebar_geometry_remove(c->titlebar, 0, c->geometry), &t->geometry);
 262
 263     wibox_init(t, c->phys_screen);
 264
 265     t->need_update = true;
 266
 267     /* Call update geometry. This will move the wibox to the right place,
 268      * which might be the same as `wingeom', but then it will ban the
 269      * titlebar if needed. */
 270     titlebar_update_geometry(c);
 271
 272     xcb_map_window(globalconf.connection, t->window);
 273
 274     hook_property(c, "titlebar");
 275
 276     luaA_object_push(globalconf.L, c);
 277     luaA_object_emit_signal(globalconf.L, -1, "property::titlebar", 0);
 278     lua_pop(globalconf.L, 1);
 279     client_stack();
 280 }
 281
 282 /** Map or unmap a titlebar wibox.
 283  * \param t The wibox/titlebar.
 284  * \param visible The new state of the titlebar.
 285  */
 286 void
 287 titlebar_set_visible(wibox_t *t, bool visible)
 288 {
 289     if(visible != t->visible)
 290     {
 291         if((t->visible = visible))
 292             titlebar_unban(t);
 293         else
 294             titlebar_ban(t);
 295
 296         hook_property(t, "visible");
 297         client_stack();
 298     }
 299 }
 300
 301 int
 302 luaA_titlebar_set_position(lua_State *L, int udx)
 303 {
 304     wibox_t *titlebar = luaA_checkudata(L, udx, &wibox_class);
 305     size_t len;
 306     const char *buf = luaL_checklstring(L, -1, &len);
 307     position_t position = position_fromstr(buf, len);
 308     if(position != titlebar->position)
 309     {
 310         switch(position)
 311         {
 312           case Left:
 313             switch(titlebar->position)
 314             {
 315                 int tmp;
 316               case Left:
 317               case Right:
 318                 break;
 319               case Top:
 320               case Bottom:
 321                 tmp = titlebar->geometry.width;
 322                 titlebar->geometry.width = titlebar->geometry.height;
 323                 titlebar->geometry.height = tmp;
 324                 break;
 325             }
 326             wibox_set_orientation(L, udx, North);
 327             break;
 328           case Right:
 329             switch(titlebar->position)
 330             {
 331                 int tmp;
 332               case Left:
 333               case Right:
 334                 break;
 335               case Top:
 336               case Bottom:
 337                 tmp = titlebar->geometry.width;
 338                 titlebar->geometry.width = titlebar->geometry.height;
 339                 titlebar->geometry.height = tmp;
 340                 break;
 341             }
 342             wibox_set_orientation(L, udx, South);
 343             break;
 344           case Top:
 345           case Bottom:
 346             switch(titlebar->position)
 347             {
 348                 int tmp;
 349               case Left:
 350               case Right:
 351                 tmp = titlebar->geometry.width;
 352                 titlebar->geometry.width = titlebar->geometry.height;
 353                 titlebar->geometry.height = tmp;
 354                 break;
 355               case Top:
 356               case Bottom:
 357                 break;
 358             }
 359             wibox_set_orientation(L, udx, East);
 360             break;
 361         }
 362         titlebar->position = position;
 363         client_t *c;
 364         if((c = client_getbytitlebar(titlebar)))
 365         {
 366             titlebar_update_geometry(c);
 367             /* call geometry hook for client because some like to
 368              * set titlebar width in that hook, which make sense */
 369             hook_property(c, "geometry");
 370         }
 371     }
 372     return 0;
 373 }
 374
 375 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80