screen.c

   1 /*
   2  * screen.c - screen management
   3  *
   4  * Copyright © 2007 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 "util.h"
  23 #include "screen.h"
  24 #include "tag.h"
  25 #include "layout.h"
  26
  27 extern Client *sel, *clients;
  28
  29 /** Get screens info
  30  * \param disp Display ref
  31  * \param screen Screen number
  32  * \param statusbar statusbar
  33  * \param screen_number int pointer filled with number of screens
  34  * \return ScreenInfo struct array with all screens info
  35  */
  36 ScreenInfo *
  37 get_screen_info(Display *disp, int screen, Statusbar *statusbar, int *screen_number)
  38 {
  39     int i, fake_screen_number = 0;
  40     ScreenInfo *si;
  41
  42     if(XineramaIsActive(disp))
  43     {
  44         si = XineramaQueryScreens(disp, screen_number);
  45         fake_screen_number = *screen_number;
  46     }
  47     else
  48     {
  49         /* emulate Xinerama info but only fill the screen we want */
  50         *screen_number =  1;
  51         si = p_new(ScreenInfo, screen + 1);
  52         si[screen].width = DisplayWidth(disp, screen);
  53         si[screen].height = DisplayHeight(disp, screen);
  54         si[screen].x_org = 0;
  55         si[screen].y_org = 0;
  56         fake_screen_number = screen + 1;
  57     }
  58
  59     if(statusbar)
  60         for(i = 0; i < fake_screen_number; i++)
  61         {
  62             if(statusbar->position == BarTop
  63                || statusbar->position == BarBot)
  64                 si[i].height -= statusbar->height;
  65             if(statusbar->position == BarTop)
  66                 si[i].y_org += statusbar->height;
  67         }
  68
  69     return si;
  70 }
  71
  72 /** Get display info
  73  * \param disp Display ref
  74  * \param screen Screen number
  75  * \param statusbar the statusbar
  76  * \return ScreenInfo struct pointer with all display info
  77  */
  78 ScreenInfo *
  79 get_display_info(Display *disp, int screen, Statusbar statusbar)
  80 {
  81     ScreenInfo *si;
  82
  83     si = p_new(ScreenInfo, 1);
  84
  85     si->x_org = 0;
  86     si->y_org = statusbar.position == BarTop ? statusbar.height : 0;
  87     si->width = DisplayWidth(disp, screen);
  88     si->height = DisplayHeight(disp, screen) -
  89         ((statusbar.position == BarTop || statusbar.position == BarBot) ? statusbar.height : 0);
  90
  91     return si;
  92 }
  93
  94 /** Return the Xinerama screen number where the window is placed
  95  * \param disp Display ref
  96  * \param x x coordinate of the window
  97  * \param y y coordinate of the window
  98  * \return screen number or -1 on no match
  99  */
 100 int
 101 get_screen_bycoord(Display *disp, int x, int y)
 102 {
 103     ScreenInfo *si;
 104     int screen_number, i;
 105
 106     /* don't waste our time */
 107     if(!XineramaIsActive(disp))
 108         return 0;
 109
 110     si = get_screen_info(disp, 0, NULL, &screen_number);
 111
 112     for(i = 0; i < screen_number; i++)
 113         if(x >= si[i].x_org && x <= si[i].x_org + si[i].width
 114            && y >= si[i].y_org && y <= si[i].x_org + si[i].height)
 115         {
 116             XFree(si);
 117             return i;
 118         }
 119
 120     XFree(si);
 121     return -1;
 122 }
 123
 124 void
 125 uicb_focusnextscreen(Display *disp,
 126                      DC *drawcontext,
 127                      awesome_config * awesomeconf,
 128                      const char *arg __attribute__ ((unused)))
 129 {
 130     Client *c;
 131     int next_screen = awesomeconf->screen + 1 >= ScreenCount(disp) ? 0 : awesomeconf->screen + 1;
 132
 133     for(c = clients; c && !isvisible(c, next_screen, awesomeconf[next_screen - awesomeconf->screen].tags, awesomeconf[next_screen - awesomeconf->screen].ntags); c = c->next);
 134     if(c)
 135     {
 136         focus(c->display, &drawcontext[next_screen - awesomeconf->screen], c, True, &awesomeconf[next_screen - awesomeconf->screen]);
 137         restack(c->display, &drawcontext[next_screen - awesomeconf->screen], &awesomeconf[next_screen - awesomeconf->screen]);
 138     }
 139 }
 140
 141 void
 142 uicb_focusprevscreen(Display *disp,
 143                      DC *drawcontext,
 144                      awesome_config * awesomeconf,
 145                      const char *arg __attribute__ ((unused)))
 146 {
 147     Client *c;
 148     int prev_screen = awesomeconf->screen - 1 < 0 ? ScreenCount(disp) - 1 : awesomeconf->screen - 1;
 149
 150     for(c = clients; c && !isvisible(c, prev_screen, awesomeconf[prev_screen - awesomeconf->screen].tags, awesomeconf[prev_screen - awesomeconf->screen].ntags); c = c->next);
 151     if(c)
 152     {
 153         focus(c->display, &drawcontext[prev_screen - awesomeconf->screen], c, True, &awesomeconf[prev_screen - awesomeconf->screen]);
 154         restack(c->display, &drawcontext[prev_screen - awesomeconf->screen], &awesomeconf[prev_screen - awesomeconf->screen]);
 155     }
 156 }