screen.c

   1 /*
   2  * screen.c - screen management
   3  *
   4  * Copyright © 2007-2008 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 "screen.h"
  23 #include "tag.h"
  24 #include "focus.h"
  25 #include "client.h"
  26 #include "layouts/floating.h"
  27
  28 extern AwesomeConf globalconf;
  29
  30 /** Get screens info
  31  * \param screen Screen number
  32  * \param statusbar statusbar
  33  * \param padding Padding
  34  * \return area_t
  35  */
  36 area_t
  37 screen_get_area(int screen, Statusbar *statusbar, Padding *padding)
  38 {
  39     area_t area = globalconf.screens_info->geometry[screen];
  40     Statusbar *sb;
  41
  42     /* make padding corrections */
  43     if(padding)
  44     {
  45         area.x += padding->left;
  46         area.y += padding->top;
  47         area.width -= padding->left + padding->right;
  48         area.height -= padding->top + padding->bottom;
  49     }
  50
  51     for(sb = statusbar; sb; sb = sb->next)
  52         switch(sb->position)
  53         {
  54           case Top:
  55             area.y += sb->height;
  56           case Bottom:
  57             area.height -= sb->height;
  58             break;
  59           case Left:
  60             area.x += sb->height;
  61           case Right:
  62             area.width -= sb->height;
  63             break;
  64           default:
  65             break;
  66         }
  67
  68     return area;
  69 }
  70
  71 /** Get display info
  72  * \param screen Screen number
  73  * \param statusbar the statusbar
  74  * \param padding Padding
  75  * \return area_t
  76  */
  77 area_t
  78 get_display_area(int screen, Statusbar *statusbar, Padding *padding)
  79 {
  80     area_t area = { 0, 0, 0, 0, NULL, NULL };
  81     Statusbar *sb;
  82
  83     area.width = DisplayWidth(globalconf.display, screen);
  84     area.height = DisplayHeight(globalconf.display, screen);
  85
  86     for(sb = statusbar; sb; sb = sb->next)
  87     {
  88         area.y += sb->position == Top ? sb->height : 0;
  89         area.height -= (sb->position == Top || sb->position == Bottom) ? sb->height : 0;
  90     }
  91
  92     /* make padding corrections */
  93     if(padding)
  94     {
  95             area.x += padding->left;
  96             area.y += padding->top;
  97             area.width -= padding->left + padding->right;
  98             area.height -= padding->top + padding->bottom;
  99     }
 100     return area;
 101 }
 102
 103 /** This returns the real X screen number for a logical
 104  * screen if Xinerama is active.
 105  * \param screen the logical screen
 106  * \return the X screen
 107  */
 108 int
 109 screen_virttophys(int screen)
 110 {
 111     if(globalconf.screens_info->xinerama_is_active)
 112         return DefaultScreen(globalconf.display);
 113     return screen;
 114 }
 115
 116 /** Move a client to a virtual screen
 117  * \param c the client
 118  * \param new_screen The destinatiuon screen
 119  * \param doresize set to True if we also move the client to the new x and
 120  *        y of the new screen
 121  */
 122 void
 123 move_client_to_screen(Client *c, int new_screen, Bool doresize)
 124 {
 125     Tag *tag;
 126     int old_screen = c->screen;
 127     area_t from, to;
 128
 129     for(tag = globalconf.screens[old_screen].tags; tag; tag = tag->next)
 130         untag_client(c, tag);
 131
 132     c->screen = new_screen;
 133
 134     /* tag client with new screen tags */
 135     tag_client_with_current_selected(c);
 136
 137     /* resize the windows if it's floating */
 138     if(doresize && old_screen != c->screen)
 139     {
 140         area_t new_geometry, new_f_geometry;
 141         new_f_geometry = c->f_geometry;
 142
 143         to = screen_get_area(c->screen, NULL, NULL);
 144         from = screen_get_area(old_screen, NULL, NULL);
 145
 146         /* compute new coords in new screen */
 147         new_f_geometry.x = (c->f_geometry.x - from.x) + to.x;
 148         new_f_geometry.y = (c->f_geometry.y - from.y) + to.y;
 149
 150         /* check that new coords are still in the screen */
 151         if(new_f_geometry.width > to.width)
 152             new_f_geometry.width = to.width;
 153         if(new_f_geometry.height > to.height)
 154             new_f_geometry.height = to.height;
 155         if(new_f_geometry.x + new_f_geometry.width >= to.x + to.width)
 156             new_f_geometry.x = to.x + to.width - new_f_geometry.width - 2 * c->border;
 157         if(new_f_geometry.y + new_f_geometry.height >= to.y + to.height)
 158             new_f_geometry.y = to.y + to.height - new_f_geometry.height - 2 * c->border;
 159
 160         if(c->ismax)
 161         {
 162             new_geometry = c->geometry;
 163
 164             /* compute new coords in new screen */
 165             new_geometry.x = (c->geometry.x - from.x) + to.x;
 166             new_geometry.y = (c->geometry.y - from.y) + to.y;
 167
 168             /* check that new coords are still in the screen */
 169             if(new_geometry.width > to.width)
 170                 new_geometry.width = to.width;
 171             if(new_geometry.height > to.height)
 172                 new_geometry.height = to.height;
 173             if(new_geometry.x + new_geometry.width >= to.x + to.width)
 174                 new_geometry.x = to.x + to.width - new_geometry.width - 2 * c->border;
 175             if(new_geometry.y + new_geometry.height >= to.y + to.height)
 176                 new_geometry.y = to.y + to.height - new_geometry.height - 2 * c->border;
 177
 178             /* compute new coords for max in new screen */
 179             c->m_geometry.x = (c->m_geometry.x - from.x) + to.x;
 180             c->m_geometry.y = (c->m_geometry.y - from.y) + to.y;
 181
 182             /* check that new coords are still in the screen */
 183             if(c->m_geometry.width > to.width)
 184                 c->m_geometry.width = to.width;
 185             if(c->m_geometry.height > to.height)
 186                 c->m_geometry.height = to.height;
 187             if(c->m_geometry.x + c->m_geometry.width >= to.x + to.width)
 188                 c->m_geometry.x = to.x + to.width - c->m_geometry.width - 2 * c->border;
 189             if(c->m_geometry.y + c->m_geometry.height >= to.y + to.height)
 190                 c->m_geometry.y = to.y + to.height - c->m_geometry.height - 2 * c->border;
 191
 192             client_resize(c, new_geometry, False);
 193         }
 194         /* if floating, move to this new coords */
 195         else if(c->isfloating)
 196             client_resize(c, new_f_geometry, False);
 197         /* otherwise just register them */
 198         else
 199         {
 200             c->f_geometry = new_f_geometry;
 201             globalconf.screens[old_screen].need_arrange = True;
 202             globalconf.screens[c->screen].need_arrange = True;
 203         }
 204     }
 205 }
 206
 207 /** Move mouse pointer to x_org and y_xorg of specified screen
 208  * \param screen screen number
 209  */
 210 static void
 211 move_mouse_pointer_to_screen(int phys_screen)
 212 {
 213     if(globalconf.screens_info->xinerama_is_active)
 214     {
 215         area_t area = screen_get_area(phys_screen, NULL, NULL);
 216         XWarpPointer(globalconf.display,
 217                      None,
 218                      DefaultRootWindow(globalconf.display),
 219                      0, 0, 0, 0, area.x, area.y);
 220     }
 221     else
 222         XWarpPointer(globalconf.display,
 223                      None,
 224                      RootWindow(globalconf.display, phys_screen),
 225                      0, 0, 0, 0, 0, 0);
 226 }
 227
 228
 229 /** Switch focus to a specified screen
 230  * \param screen Screen ID
 231  * \param arg screen number
 232  * \ingroup ui_callback
 233  */
 234 void
 235 uicb_screen_focus(int screen, char *arg)
 236 {
 237     int new_screen;
 238
 239     if(arg)
 240         new_screen = compute_new_value_from_arg(arg, screen);
 241     else
 242         new_screen = screen + 1;
 243
 244     if (new_screen < 0)
 245         new_screen = globalconf.screens_info->nscreen - 1;
 246     if (new_screen > (globalconf.screens_info->nscreen - 1))
 247         new_screen = 0;
 248
 249     client_focus(NULL, new_screen, True);
 250
 251     move_mouse_pointer_to_screen(new_screen);
 252 }
 253
 254 /** Move client to a virtual screen (if Xinerama is active)
 255  * \param screen Screen ID
 256  * \param arg screen number
 257  * \ingroup ui_callback
 258  */
 259 void
 260 uicb_client_movetoscreen(int screen __attribute__ ((unused)), char *arg)
 261 {
 262     int new_screen, prev_screen;
 263     Client *sel = globalconf.focus->client;
 264
 265     if(!sel || !globalconf.screens_info->xinerama_is_active)
 266         return;
 267
 268     if(arg)
 269         new_screen = compute_new_value_from_arg(arg, sel->screen);
 270     else
 271         new_screen = sel->screen + 1;
 272
 273     if(new_screen >= globalconf.screens_info->nscreen)
 274         new_screen = 0;
 275     else if(new_screen < 0)
 276         new_screen = globalconf.screens_info->nscreen - 1;
 277
 278     prev_screen = sel->screen;
 279     move_client_to_screen(sel, new_screen, True);
 280     move_mouse_pointer_to_screen(new_screen);
 281     client_focus(sel, sel->screen, True);
 282 }
 283 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80