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;
  29 // set when either width or height is changed
  30 int geometry_wh_changed;
  31 int geometry_xy_changed;
  32
  33 // xpos,ypos: position of the left upper corner
  34 // widw,widh: width and height of the window
  35 // scrw,scrh: width and height of the current screen
  36 int geometry(int *xpos, int *ypos, int *widw, int *widh, int scrw, int scrh)
  37 {
  38         if(vo_geometry != NULL) {
  39             char xsign[2], ysign[2], dummy[2];
  40             int width, height, xoff, yoff, xper, yper;
  41             int i;
  42             int ok = 0;
  43             for (i = 0; !ok && i < 9; i++) {
  44                 width = height = xoff = yoff = xper = yper = INT_MIN;
  45                 strcpy(xsign, "+");
  46                 strcpy(ysign, "+");
  47                 switch (i) {
  48                 case 0:
  49                     ok = sscanf(vo_geometry, "%ix%i%1[+-]%i%1[+-]%i%c",
  50                                 &width, &height, xsign, &xoff, ysign,
  51                                 &yoff, dummy) == 6;
  52                     break;
  53                 case 1:
  54                     ok = sscanf(vo_geometry, "%ix%i%c", &width, &height, dummy) == 2;
  55                     break;
  56                 case 2:
  57                     ok = sscanf(vo_geometry, "%1[+-]%i%1[+-]%i%c",
  58                                 xsign, &xoff, ysign, &yoff, dummy) == 4;
  59                     break;
  60                 case 3:
  61                     ok = sscanf(vo_geometry, "%i%%:%i%1[%]%c", &xper, &yper, dummy, dummy) == 3;
  62                     break;
  63                 case 4:
  64                     ok = sscanf(vo_geometry, "%i:%i%1[%]%c", &xoff, &yper, dummy, dummy) == 3;
  65                     break;
  66                 case 5:
  67                     ok = sscanf(vo_geometry, "%i%%:%i%c", &xper, &yoff, dummy) == 2;
  68                     break;
  69                 case 6:
  70                     ok = sscanf(vo_geometry, "%i:%i%c", &xoff, &yoff, dummy) == 2;
  71                     break;
  72                 case 7:
  73                     ok = sscanf(vo_geometry, "%i%1[%]%c", &xper, dummy, dummy) == 2;
  74                     break;
  75                 case 8:
  76                     ok = sscanf(vo_geometry, "%i%c", &xoff, dummy) == 1;
  77                     break;
  78                 }
  79             }
  80                       if (!ok) {
  81                         mp_msg(MSGT_VO, MSGL_ERR,
  82                             "-geometry must be in [WxH][[+-]X[+-]Y] | [X[%%]:[Y[%%]]] format, incorrect (%s)\n", vo_geometry);
  83                         return 0;
  84                       }
  85
  86                 mp_msg(MSGT_VO, MSGL_V,"geometry window parameter: widw: %i,"
  87                   " widh: %i, scrw: %i, scrh: %i\n",*widw, *widh, scrw, scrh);
  88
  89                 mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
  90                   "height: %i, xoff: %s%i, yoff: %s%i, xper: %i, yper: %i\n",
  91                   width, height, xsign, xoff, ysign, yoff, xper, yper);
  92
  93                 if (width  > 0 && widw) *widw = width;
  94                 if (height > 0 && widh) *widh = height;
  95
  96                 if(xoff != INT_MIN && xsign[0] == '-') xoff = scrw - *widw - xoff;
  97                 if(yoff != INT_MIN && ysign[0] == '-') yoff = scrh - *widh - yoff;
  98                 if(xper >= 0 && xper <= 100) xoff = (scrw - *widw) * ((float)xper / 100.0);
  99                 if(yper >= 0 && yper <= 100) yoff = (scrh - *widh) * ((float)yper / 100.0);
 100
 101                 mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
 102                   "height: %i, xoff: %i, yoff: %i, xper: %i, yper: %i\n",
 103                   width, height, xoff, yoff, xper, yper);
 104
 105                 if (xoff != INT_MIN && xpos) *xpos = xoff;
 106                 if (yoff != INT_MIN && ypos) *ypos = yoff;
 107
 108                 geometry_wh_changed = width > 0 || height > 0;
 109                 geometry_xy_changed = xoff != INT_MIN || yoff != INT_MIN;
 110         }
 111         return 1;
 112 }