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 "geometry.h"
  24 #include "mp_msg.h"
  25
  26 /* A string of the form [WxH][+X+Y] or xpos[%]:ypos[%] */
  27 char *vo_geometry = NULL;
  28 // set when either width or height is changed
  29 int geometry_wh_changed = 0;
  30 int geometry_xy_changed = 0;
  31
  32 #define RESET_GEOMETRY width = height = xoff = yoff = xper = yper = -1;
  33
  34 // xpos,ypos: position of the left upper corner
  35 // widw,widh: width and height of the window
  36 // scrw,scrh: width and height of the current screen
  37 int geometry(int *xpos, int *ypos, int *widw, int *widh, int scrw, int scrh)
  38 {
  39         int width, height, xoff, yoff, xper, yper;
  40
  41         width = height = xoff = yoff = xper = yper = -1;
  42
  43         if(vo_geometry != NULL) {
  44                 if(sscanf(vo_geometry, "%ix%i+%i+%i", &width, &height, &xoff, &yoff) != 4 )
  45                 {
  46                  RESET_GEOMETRY
  47                  if(sscanf(vo_geometry, "%ix%i", &width, &height) != 2)
  48                  {
  49                   RESET_GEOMETRY
  50                   if(sscanf(vo_geometry, "+%i+%i", &xoff, &yoff) != 2)
  51                   {
  52                    char percent[2];
  53                    RESET_GEOMETRY
  54                    if(sscanf(vo_geometry, "%i%%:%i%1[%]", &xper, &yper, percent) != 3)
  55                    {
  56                     RESET_GEOMETRY
  57                     if(sscanf(vo_geometry, "%i:%i%1[%]", &xoff, &yper, percent) != 3)
  58                     {
  59                      RESET_GEOMETRY
  60                      if(sscanf(vo_geometry, "%i%%:%i", &xper, &yoff) != 2)
  61                      {
  62                      RESET_GEOMETRY
  63                      if(sscanf(vo_geometry, "%i:%i", &xoff, &yoff) != 2)
  64                      {
  65                       RESET_GEOMETRY
  66                       if(sscanf(vo_geometry, "%i%1[%]", &xper, percent) != 2)
  67                       {
  68                         mp_msg(MSGT_VO, MSGL_ERR,
  69                             "-geometry must be in [WxH][+X+Y] | [X[%%]:[Y[%%]]] format, incorrect (%s)\n", vo_geometry);
  70                         return 0;
  71                       }
  72                      }
  73                     }
  74                    }
  75                   }
  76                  }
  77                 }
  78                }
  79
  80                 mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
  81                   "height: %i, xoff: %i, yoff: %i, xper: %i, yper: %i\n",
  82                   width, height, xoff, yoff, xper, yper);
  83
  84                 if(xper >= 0 && xper <= 100) xoff = (scrw - *widw) * ((float)xper / 100.0);
  85                 if(yper >= 0 && yper <= 100) yoff = (scrh - *widh) * ((float)yper / 100.0);
  86
  87                 mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
  88                   "height: %i, xoff: %i, yoff: %i, xper: %i, yper: %i\n",
  89                   width, height, xoff, yoff, xper, yper);
  90                 mp_msg(MSGT_VO, MSGL_V,"geometry window parameter: widw: %i,"
  91                   " widh: %i, scrw: %i, scrh: %i\n",*widw, *widh, scrw, scrh);
  92
  93                 /* FIXME: better checking of bounds... */
  94                 if( width != -1 && (width < 0 || width > scrw))
  95                     width = (scrw < *widw) ? scrw : *widw;
  96                 if( height != -1 && (height < 0 || height > scrh))
  97                     height = (scrh < *widh) ? scrh : *widh;
  98                 if(xoff != -1 && (xoff < 0 || xoff + width > scrw)) xoff = 0;
  99                 if(yoff != -1 && (yoff < 0 || yoff + height > scrh)) yoff = 0;
 100
 101                 if(xoff != -1 && xpos) *xpos = xoff;
 102                 if(yoff != -1 && ypos) *ypos = yoff;
 103                 if(width != -1 && widw) *widw = width;
 104                 if(height != -1 && widh) *widh = height;
 105
 106                 if( width != -1 || height != -1)
 107                     geometry_wh_changed = 1;
 108                 if( xoff != -1 || yoff != -1)
 109                     geometry_xy_changed = 1;
 110         }
 111         return 1;
 112 }
 113
 114 #undef RESET_GEOMETRY