libvo/geometry.c

   1 /*
   2  * copyright (C) 2002 Mark Zealey <mark@zealos.org>
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer 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  * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <limits.h>
  24 #include "geometry.h"
  25 #include "mp_msg.h"
  26
  27 /* A string of the form [WxH][+X+Y] or xpos[%]:ypos[%] */
  28 char *vo_geometry = NULL;
  29 // set when either width or height is changed
  30 int geometry_wh_changed = 0;
  31 int geometry_xy_changed = 0;
  32
  33 #define RESET_GEOMETRY width = height = xoff = yoff = xper = yper = -1;
  34
  35 // xpos,ypos: position of the left upper corner
  36 // widw,widh: width and height of the window
  37 // scrw,scrh: width and height of the current screen
  38 int geometry(int *xpos, int *ypos, int *widw, int *widh, int scrw, int scrh)
  39 {
  40         int width, height, xoff, yoff, xper, yper;
  41
  42         width = height = xoff = yoff = xper = yper = INT_MIN;
  43
  44         if(vo_geometry != NULL) {
  45                 if(sscanf(vo_geometry, "%ix%i+%i+%i", &width, &height, &xoff, &yoff) != 4 )
  46                 {
  47                  RESET_GEOMETRY
  48                  if(sscanf(vo_geometry, "%ix%i", &width, &height) != 2)
  49                  {
  50                   RESET_GEOMETRY
  51                   if(sscanf(vo_geometry, "+%i+%i", &xoff, &yoff) != 2)
  52                   {
  53                    char percent[2];
  54                    RESET_GEOMETRY
  55                    if(sscanf(vo_geometry, "%i%%:%i%1[%]", &xper, &yper, percent) != 3)
  56                    {
  57                     RESET_GEOMETRY
  58                     if(sscanf(vo_geometry, "%i:%i%1[%]", &xoff, &yper, percent) != 3)
  59                     {
  60                      RESET_GEOMETRY
  61                      if(sscanf(vo_geometry, "%i%%:%i", &xper, &yoff) != 2)
  62                      {
  63                      RESET_GEOMETRY
  64                      if(sscanf(vo_geometry, "%i:%i", &xoff, &yoff) != 2)
  65                      {
  66                       RESET_GEOMETRY
  67                       if(sscanf(vo_geometry, "%i%1[%]", &xper, percent) != 2)
  68                       {
  69                         mp_msg(MSGT_VO, MSGL_ERR,
  70                             "-geometry must be in [WxH][+X+Y] | [X[%%]:[Y[%%]]] format, incorrect (%s)\n", vo_geometry);
  71                         return 0;
  72                       }
  73                      }
  74                     }
  75                    }
  76                   }
  77                  }
  78                 }
  79                }
  80
  81                 mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
  82                   "height: %i, xoff: %i, yoff: %i, xper: %i, yper: %i\n",
  83                   width, height, xoff, yoff, xper, yper);
  84
  85                 if(xper >= 0 && xper <= 100) xoff = (scrw - *widw) * ((float)xper / 100.0);
  86                 if(yper >= 0 && yper <= 100) yoff = (scrh - *widh) * ((float)yper / 100.0);
  87
  88                 mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
  89                   "height: %i, xoff: %i, yoff: %i, xper: %i, yper: %i\n",
  90                   width, height, xoff, yoff, xper, yper);
  91                 mp_msg(MSGT_VO, MSGL_V,"geometry window parameter: widw: %i,"
  92                   " widh: %i, scrw: %i, scrh: %i\n",*widw, *widh, scrw, scrh);
  93
  94                 if (xoff != INT_MIN && xpos) *xpos = xoff;
  95                 if (yoff != INT_MIN && ypos) *ypos = yoff;
  96                 if (width  > 0 && widw) *widw = width;
  97                 if (height > 0 && widh) *widh = height;
  98
  99                 if (width > 0 || height > 0)
 100                     geometry_wh_changed = 1;
 101                 if (xoff != INT_MIN || yoff != INT_MIN)
 102                     geometry_xy_changed = 1;
 103         }
 104         return 1;
 105 }
 106
 107 #undef RESET_GEOMETRY