mpv/libvo/geometry.c

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/*
* copyright (C) 2002 Mark Zealey <mark@zealos.org>
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include "geometry.h"
#include "mp_msg.h"
/* A string of the form [WxH][+X+Y] or xpos[%]:ypos[%] */
char *vo_geometry;
// set when either width or height is changed
int geometry_wh_changed;
int geometry_xy_changed;
// xpos,ypos: position of the left upper corner
// widw,widh: width and height of the window
// scrw,scrh: width and height of the current screen
int geometry(int *xpos, int *ypos, int *widw, int *widh, int scrw, int scrh)
{
if(vo_geometry != NULL) {
char xsign[2], ysign[2], dummy[2];
int width, height, xoff, yoff, xper, yper;
int i;
int ok = 0;
for (i = 0; !ok && i < 9; i++) {
width = height = xoff = yoff = xper = yper = INT_MIN;
strcpy(xsign, "+");
strcpy(ysign, "+");
switch (i) {
case 0:
ok = sscanf(vo_geometry, "%ix%i%1[+-]%i%1[+-]%i%c",
&width, &height, xsign, &xoff, ysign,
&yoff, dummy) == 6;
break;
case 1:
ok = sscanf(vo_geometry, "%ix%i%c", &width, &height, dummy) == 2;
break;
case 2:
ok = sscanf(vo_geometry, "%1[+-]%i%1[+-]%i%c",
xsign, &xoff, ysign, &yoff, dummy) == 4;
break;
case 3:
ok = sscanf(vo_geometry, "%i%%:%i%1[%]%c", &xper, &yper, dummy, dummy) == 3;
break;
case 4:
ok = sscanf(vo_geometry, "%i:%i%1[%]%c", &xoff, &yper, dummy, dummy) == 3;
break;
case 5:
ok = sscanf(vo_geometry, "%i%%:%i%c", &xper, &yoff, dummy) == 2;
break;
case 6:
ok = sscanf(vo_geometry, "%i:%i%c", &xoff, &yoff, dummy) == 2;
break;
case 7:
ok = sscanf(vo_geometry, "%i%1[%]%c", &xper, dummy, dummy) == 2;
break;
case 8:
ok = sscanf(vo_geometry, "%i%c", &xoff, dummy) == 1;
break;
}
}
if (!ok) {
mp_msg(MSGT_VO, MSGL_ERR,
"-geometry must be in [WxH][[+-]X[+-]Y] | [X[%%]:[Y[%%]]] format, incorrect (%s)\n", vo_geometry);
return 0;
}
mp_msg(MSGT_VO, MSGL_V,"geometry window parameter: widw: %i,"
" widh: %i, scrw: %i, scrh: %i\n",*widw, *widh, scrw, scrh);
mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
"height: %i, xoff: %s%i, yoff: %s%i, xper: %i, yper: %i\n",
width, height, xsign, xoff, ysign, yoff, xper, yper);
if (width > 0 && widw) *widw = width;
if (height > 0 && widh) *widh = height;
if(xoff != INT_MIN && xsign[0] == '-') xoff = scrw - *widw - xoff;
if(yoff != INT_MIN && ysign[0] == '-') yoff = scrh - *widh - yoff;
if(xper >= 0 && xper <= 100) xoff = (scrw - *widw) * ((float)xper / 100.0);
if(yper >= 0 && yper <= 100) yoff = (scrh - *widh) * ((float)yper / 100.0);
mp_msg(MSGT_VO, MSGL_V,"geometry set to width: %i,"
"height: %i, xoff: %i, yoff: %i, xper: %i, yper: %i\n",
width, height, xoff, yoff, xper, yper);
if (xoff != INT_MIN && xpos) *xpos = xoff;
if (yoff != INT_MIN && ypos) *ypos = yoff;
geometry_wh_changed = width > 0 || height > 0;
geometry_xy_changed = xoff != INT_MIN || yoff != INT_MIN;
}
return 1;
}