titlebar.c

   1 /*
   2  * titlebar.c - titlebar management
   3  *
   4  * Copyright © 2008 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
  30 extern awesome_t globalconf;
  31
  32 /** Get a client by its titlebar.
  33  * \param titlebar The titlebar.
  34  * \return A client.
  35  */
  36 client_t *
  37 client_getbytitlebar(wibox_t *titlebar)
  38 {
  39     client_t *c;
  40
  41     for(c = globalconf.clients; c; c = c->next)
  42         if(c->titlebar == titlebar)
  43             return c;
  44
  45     return NULL;
  46 }
  47
  48 /** Get a client by its titlebar window.
  49  * \param win The window.
  50  * \return A client.
  51  */
  52 client_t *
  53 client_getbytitlebarwin(xcb_window_t win)
  54 {
  55     client_t *c;
  56
  57     for(c = globalconf.clients; c; c = c->next)
  58         if(c->titlebar && c->titlebar->sw.window == win)
  59             return c;
  60
  61     return NULL;
  62 }
  63
  64 /** Move a titlebar out of the viewport.
  65  * \param titlebar The titlebar.
  66  */
  67 void
  68 titlebar_ban(wibox_t *titlebar)
  69 {
  70     /* Do it manually because client geometry remains unchanged. */
  71     if(titlebar)
  72     {
  73         simple_window_t *sw = &titlebar->sw;
  74
  75         if(sw->window)
  76         {
  77             uint32_t request[] = { - sw->geometry.width, - sw->geometry.height };
  78             /* Move the titlebar to the same place as the window. */
  79             xcb_configure_window(globalconf.connection, sw->window,
  80                                  XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y,
  81                                  request);
  82         }
  83     }
  84 }
  85
  86 /** Get titlebar area.
  87  * \param c The client
  88  * \param geometry The client geometry including borders, excluding titlebars.
  89  * \param res Pointer to area of titlebar, must be allocated already.
  90  */
  91 void
  92 titlebar_geometry_compute(client_t *c, area_t geometry, area_t *res)
  93 {
  94     int height, width, x_offset = 0, y_offset = 0;
  95
  96     switch(c->titlebar->position)
  97     {
  98       default:
  99         return;
 100       case Top:
 101         width = MAX(1, geometry.width);
 102         switch(c->titlebar->align)
 103         {
 104           default:
 105             break;
 106           case AlignRight:
 107             x_offset = geometry.width - width;
 108             break;
 109           case AlignCenter:
 110             x_offset = (geometry.width - width) / 2;
 111             break;
 112         }
 113         res->x = geometry.x + x_offset;
 114         res->y = geometry.y - c->titlebar->sw.geometry.height;
 115         res->width = width;
 116         res->height = c->titlebar->sw.geometry.height;
 117         break;
 118       case Bottom:
 119         width = MAX(1, geometry.width);
 120         switch(c->titlebar->align)
 121         {
 122           default:
 123             break;
 124           case AlignRight:
 125             x_offset = geometry.width - width;
 126             break;
 127           case AlignCenter:
 128             x_offset = (geometry.width - width) / 2;
 129             break;
 130         }
 131         res->x = geometry.x + x_offset;
 132         res->y = geometry.y + geometry.height;
 133         res->width = width;
 134         res->height = c->titlebar->sw.geometry.height;
 135         break;
 136       case Left:
 137         height = MAX(1, geometry.height);
 138         switch(c->titlebar->align)
 139         {
 140           default:
 141             break;
 142           case AlignRight:
 143             y_offset = geometry.height - height;
 144             break;
 145           case AlignCenter:
 146             y_offset = (geometry.height - height) / 2;
 147             break;
 148         }
 149         res->x = geometry.x - c->titlebar->sw.geometry.width;
 150         res->y = geometry.y + y_offset;
 151         res->width = c->titlebar->sw.geometry.width;
 152         res->height = height;
 153         break;
 154       case Right:
 155         height = MAX(1, geometry.height);
 156         switch(c->titlebar->align)
 157         {
 158           default:
 159             break;
 160           case AlignRight:
 161             y_offset = geometry.height - height;
 162             break;
 163           case AlignCenter:
 164             y_offset = (geometry.height - height) / 2;
 165             break;
 166         }
 167         res->x = geometry.x + geometry.width;
 168         res->y = geometry.y + y_offset;
 169         res->width = c->titlebar->sw.geometry.width;
 170         res->height = height;
 171         break;
 172     }
 173 }
 174
 175 /** Detach a wibox titlebar from its client.
 176  * \param c The client.
 177  */
 178 void
 179 titlebar_client_detach(client_t *c)
 180 {
 181     /* If client has a titlebar, kick it out. */
 182     if(c && c->titlebar)
 183     {
 184         simplewindow_wipe(&c->titlebar->sw);
 185         c->titlebar->type = WIBOX_TYPE_NORMAL;
 186         c->titlebar->screen = SCREEN_UNDEF;
 187         wibox_unref(&c->titlebar);
 188         c->titlebar = NULL;
 189         client_need_arrange(c);
 190         client_stack();
 191     }
 192 }
 193
 194 /** Attach a wibox to a client as its titlebar.
 195  * \param c The client.
 196  * \param t The wibox/titlebar.
 197  */
 198 void
 199 titlebar_client_attach(client_t *c, wibox_t *t)
 200 {
 201     titlebar_client_detach(c);
 202
 203     if(c && t)
 204     {
 205         area_t wingeom;
 206         /* Get geometry prior to any titlebar changes. */
 207         area_t curgeom = titlebar_geometry_remove(c->titlebar, 0, c->geometry);
 208
 209         /* check if titlebar is already on a client */
 210         titlebar_client_detach(client_getbytitlebar(t));
 211
 212         c->titlebar = wibox_ref(&t);
 213         t->type = WIBOX_TYPE_TITLEBAR;
 214         t->screen = c->screen;
 215
 216         switch(t->position)
 217         {
 218           case Floating:
 219             t->position = Top;
 220           case Top:
 221           case Bottom:
 222             if(!t->sw.geometry.height)
 223                 t->sw.geometry.height = 1.5 * globalconf.font->height;
 224             break;
 225           case Left:
 226           case Right:
 227             if(!t->sw.geometry.width)
 228                 t->sw.geometry.width = 1.5 * globalconf.font->height;
 229             break;
 230         }
 231
 232         /* Client geometry without titlebar, but including borders, since that is always consistent. */
 233         titlebar_geometry_compute(c, curgeom, &wingeom);
 234
 235         simplewindow_init(&t->sw, c->phys_screen,
 236                           wingeom, 0, t->sw.orientation,
 237                           &t->sw.ctx.fg, &t->sw.ctx.bg);
 238         simplewindow_border_color_set(&t->sw, &t->sw.border.color);
 239
 240         t->need_update = true;
 241
 242         /* Call update geometry. This will move the wibox to the right place,
 243          * which might be the same as `wingeom', but then it will ban the
 244          * titlebar if needed. */
 245         titlebar_update_geometry(c);
 246
 247         if(t->isvisible)
 248             xcb_map_window(globalconf.connection, t->sw.window);
 249
 250         client_need_arrange(c);
 251         client_stack();
 252     }
 253 }
 254
 255 /** Map or unmap a titlebar wibox.
 256  * \param t The wibox/titlebar.
 257  * \param visible The new state of the titlebar.
 258  */
 259 void
 260 titlebar_set_visible(wibox_t *t, bool visible)
 261 {
 262     if (visible != t->isvisible)
 263     {
 264         /* The price of (un)mapping something small like a titlebar is pretty cheap.
 265          * It would complicate matters if this rare case was treated like clients.
 266          * Clients are moved out of the viewport when banned.
 267          */
 268         if ((t->isvisible = visible))
 269             xcb_map_window(globalconf.connection, t->sw.window);
 270         else
 271             xcb_unmap_window(globalconf.connection, t->sw.window);
 272
 273         globalconf.screens[t->screen].need_arrange = true;
 274         client_stack();
 275     }
 276 }
 277
 278 /** Titlebar newindex.
 279  * \param L The Lua VM state.
 280  * \param titlebar The wibox titlebar.
 281  * \param tok The attribute token.
 282  * \return The number of elements pushed on stack.
 283  */
 284 int
 285 luaA_titlebar_newindex(lua_State *L, wibox_t *titlebar, awesome_token_t tok)
 286 {
 287     client_t *c = NULL;
 288
 289     switch(tok)
 290     {
 291         position_t position;
 292         int i;
 293         size_t len;
 294         const char *buf;
 295
 296       case A_TK_ALIGN:
 297         if((buf = luaL_checklstring(L, 3, &len)))
 298             titlebar->align = draw_align_fromstr(buf, len);
 299         else
 300             return 0;
 301         break;
 302       case A_TK_BORDER_WIDTH:
 303         if((i = luaL_checknumber(L, 3)) >= 0)
 304             simplewindow_border_width_set(&titlebar->sw, i);
 305         else
 306             return 0;
 307         break;
 308       case A_TK_BORDER_COLOR:
 309         if((buf = luaL_checklstring(L, 3, &len)))
 310             if(xcolor_init_reply(xcolor_init_unchecked(&titlebar->sw.border.color, buf, len)))
 311                 simplewindow_border_color_set(&titlebar->sw, &titlebar->sw.border.color);
 312         return 0;
 313       case A_TK_POSITION:
 314         buf = luaL_checklstring(L, 3, &len);
 315         position = position_fromstr(buf, len);
 316         if(position != titlebar->position)
 317         {
 318             switch(position)
 319             {
 320               case Left:
 321                 switch(titlebar->position)
 322                 {
 323                     int tmp;
 324                   case Left:
 325                   case Right:
 326                     break;
 327                   case Top:
 328                   case Bottom:
 329                   case Floating:
 330                     tmp = titlebar->sw.geometry.width;
 331                     titlebar->sw.geometry.width = titlebar->sw.geometry.height;
 332                     titlebar->sw.geometry.height = tmp;
 333                     break;
 334                 }
 335                 simplewindow_orientation_set(&titlebar->sw, North);
 336                 break;
 337               case Right:
 338                 switch(titlebar->position)
 339                 {
 340                     int tmp;
 341                   case Left:
 342                   case Right:
 343                     break;
 344                   case Top:
 345                   case Bottom:
 346                   case Floating:
 347                     tmp = titlebar->sw.geometry.width;
 348                     titlebar->sw.geometry.width = titlebar->sw.geometry.height;
 349                     titlebar->sw.geometry.height = tmp;
 350                     break;
 351                 }
 352                 simplewindow_orientation_set(&titlebar->sw, South);
 353                 break;
 354               case Top:
 355               case Bottom:
 356               case Floating:
 357                 switch(titlebar->position)
 358                 {
 359                     int tmp;
 360                   case Left:
 361                   case Right:
 362                     tmp = titlebar->sw.geometry.width;
 363                     titlebar->sw.geometry.width = titlebar->sw.geometry.height;
 364                     titlebar->sw.geometry.height = tmp;
 365                     break;
 366                   case Top:
 367                   case Bottom:
 368                   case Floating:
 369                     break;
 370                 }
 371                 simplewindow_orientation_set(&titlebar->sw, East);
 372                 break;
 373             }
 374             titlebar->position = position;
 375             if((c = client_getbytitlebar(titlebar)))
 376             {
 377                 titlebar_update_geometry(c);
 378                 /* call geometry hook for client because some like to
 379                  * set titlebar width in that hook, which make sense */
 380                 hooks_property(c, "geometry");
 381             }
 382         }
 383         break;
 384       default:
 385         return 0;
 386     }
 387
 388     if((c || (c = client_getbytitlebar(titlebar))))
 389         client_need_arrange(c);
 390
 391     return 0;
 392 }
 393
 394 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80