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         client_stack();
 214     }
 215 }
 216
 217 /** Attach a wibox to a client as its titlebar.
 218  * \param c The client.
 219  */
 220 void
 221 titlebar_client_attach(client_t *c)
 222 {
 223     /* check if we can register the object */
 224     wibox_t *t = luaA_object_ref(globalconf.L, -1);
 225
 226     titlebar_client_detach(c);
 227
 228     /* check if titlebar is already on a client */
 229     titlebar_client_detach(client_getbytitlebar(t));
 230
 231     /* check if client already has a titlebar. */
 232     titlebar_client_detach(c);
 233
 234     /* set the object as new client's titlebar */
 235     c->titlebar = t;
 236
 237     t->type = WIBOX_TYPE_TITLEBAR;
 238     t->screen = c->screen;
 239
 240     switch(t->position)
 241     {
 242       case Top:
 243       case Bottom:
 244         if(!t->geometry.height)
 245             t->geometry.height = 1.5 * globalconf.font->height;
 246         break;
 247       case Left:
 248       case Right:
 249         if(!t->geometry.width)
 250             t->geometry.width = 1.5 * globalconf.font->height;
 251         break;
 252     }
 253
 254     /* Update client geometry to include the titlebar. */
 255     c->geometry = titlebar_geometry_add(c->titlebar, 0, c->geometry);
 256
 257     /* Client geometry without titlebar, but including borders, since that is always consistent. */
 258     titlebar_geometry_compute(c, titlebar_geometry_remove(c->titlebar, 0, c->geometry), &t->geometry);
 259
 260     wibox_init(t, c->phys_screen);
 261
 262     t->need_update = true;
 263
 264     /* Call update geometry. This will move the wibox to the right place,
 265      * which might be the same as `wingeom', but then it will ban the
 266      * titlebar if needed. */
 267     titlebar_update_geometry(c);
 268
 269     xcb_map_window(globalconf.connection, t->window);
 270
 271     hook_property(c, "titlebar");
 272     client_stack();
 273 }
 274
 275 /** Map or unmap a titlebar wibox.
 276  * \param t The wibox/titlebar.
 277  * \param visible The new state of the titlebar.
 278  */
 279 void
 280 titlebar_set_visible(wibox_t *t, bool visible)
 281 {
 282     if(visible != t->visible)
 283     {
 284         if((t->visible = visible))
 285             titlebar_unban(t);
 286         else
 287             titlebar_ban(t);
 288
 289         hook_property(t, "visible");
 290         client_stack();
 291     }
 292 }
 293
 294 int
 295 luaA_titlebar_set_position(lua_State *L, int udx)
 296 {
 297     wibox_t *titlebar = luaA_checkudata(L, udx, &wibox_class);
 298     size_t len;
 299     const char *buf = luaL_checklstring(L, -1, &len);
 300     position_t position = position_fromstr(buf, len);
 301     if(position != titlebar->position)
 302     {
 303         switch(position)
 304         {
 305           case Left:
 306             switch(titlebar->position)
 307             {
 308                 int tmp;
 309               case Left:
 310               case Right:
 311                 break;
 312               case Top:
 313               case Bottom:
 314                 tmp = titlebar->geometry.width;
 315                 titlebar->geometry.width = titlebar->geometry.height;
 316                 titlebar->geometry.height = tmp;
 317                 break;
 318             }
 319             wibox_set_orientation(L, udx, North);
 320             break;
 321           case Right:
 322             switch(titlebar->position)
 323             {
 324                 int tmp;
 325               case Left:
 326               case Right:
 327                 break;
 328               case Top:
 329               case Bottom:
 330                 tmp = titlebar->geometry.width;
 331                 titlebar->geometry.width = titlebar->geometry.height;
 332                 titlebar->geometry.height = tmp;
 333                 break;
 334             }
 335             wibox_set_orientation(L, udx, South);
 336             break;
 337           case Top:
 338           case Bottom:
 339             switch(titlebar->position)
 340             {
 341                 int tmp;
 342               case Left:
 343               case Right:
 344                 tmp = titlebar->geometry.width;
 345                 titlebar->geometry.width = titlebar->geometry.height;
 346                 titlebar->geometry.height = tmp;
 347                 break;
 348               case Top:
 349               case Bottom:
 350                 break;
 351             }
 352             wibox_set_orientation(L, udx, East);
 353             break;
 354         }
 355         titlebar->position = position;
 356         client_t *c;
 357         if((c = client_getbytitlebar(titlebar)))
 358         {
 359             titlebar_update_geometry(c);
 360             /* call geometry hook for client because some like to
 361              * set titlebar width in that hook, which make sense */
 362             hook_property(c, "geometry");
 363         }
 364     }
 365     return 0;
 366 }
 367
 368 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80