gui/skin/font.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdlib.h>
  20 #include <stdio.h>
  21 #include <stdarg.h>
  22 #include <string.h>
  23 #include <inttypes.h>
  24
  25 #include "gui/app.h"
  26 #include "skin.h"
  27 #include "font.h"
  28 #include "cut.h"
  29 #include "mp_msg.h"
  30 #include "libavutil/avstring.h"
  31
  32 int items;
  33
  34 bmpFont * Fonts[26] = { NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL };
  35
  36 int fntAddNewFont( char * name )
  37 {
  38  int id;
  39  int i;
  40
  41  for( id=0;id<26;id++ )
  42    if ( !Fonts[id] ) break;
  43
  44  if ( id == 25 ) return -2;
  45
  46  if ( ( Fonts[id]=calloc( 1,sizeof( bmpFont ) ) ) == NULL ) return -1;
  47
  48  av_strlcpy( Fonts[id]->name,name,128 ); // FIXME: as defined in font.h
  49  for ( i=0;i<256;i++ )
  50    Fonts[id]->Fnt[i].x=Fonts[id]->Fnt[i].y=Fonts[id]->Fnt[i].sx=Fonts[id]->Fnt[i].sy=-1;
  51
  52  return id;
  53 }
  54
  55 void fntFreeFont( void )
  56 {
  57  int i;
  58  for( i=0;i < 25;i++ )
  59   {
  60    if ( Fonts[i] )
  61     {
  62      if ( Fonts[i]->Bitmap.Image ) free( Fonts[i]->Bitmap.Image );
  63      free( Fonts[i] );
  64      Fonts[i]=NULL;
  65     }
  66   }
  67 }
  68
  69 int fntRead( char * path,char * fname )
  70 {
  71  FILE * f;
  72  unsigned char   tmp[512];
  73  unsigned char * ptmp;
  74  unsigned char   command[32];
  75  unsigned char   param[256];
  76  int             c,linenumber = 0;
  77  int             id = fntAddNewFont( fname );
  78
  79  if ( id < 0 ) return id;
  80
  81  av_strlcpy( tmp,path,sizeof( tmp ) );
  82  av_strlcat( tmp,fname,sizeof( tmp ) ); av_strlcat( tmp,".fnt",sizeof( tmp ) );
  83  if ( ( f=fopen( tmp,"rt" ) ) == NULL )
  84    { free( Fonts[id] ); return -3; }
  85
  86  while ( !feof( f ) )
  87   {
  88    fgets( tmp,255,f ); linenumber++;
  89
  90    c=tmp[ strlen( tmp ) - 1 ]; if ( ( c == '\n' )||( c == '\r' ) ) tmp[ strlen( tmp ) - 1 ]=0;
  91    c=tmp[ strlen( tmp ) - 1 ]; if ( ( c == '\n' )||( c == '\r' ) ) tmp[ strlen( tmp ) - 1 ]=0;
  92    for ( c=0;c < (int)strlen( tmp );c++ )
  93      if ( tmp[c] == ';' ) { tmp[c]=0; break; }
  94    if ( !tmp[0] ) continue;
  95    ptmp=trimleft( tmp );
  96    if ( !tmp[0] ) continue;
  97    ptmp=strswap( ptmp,'\t',' ' );
  98    ptmp=trim( ptmp );
  99    cutItem( ptmp,command,'=',0 ); cutItem( ptmp,param,'=',1 );
 100    if ( command[0] == '"' )
 101     {
 102      int i;
 103      cutItem( command,command,'"',1 );
 104      i=(int)command[0];
 105      cutItem( param,tmp,',',0 ); Fonts[id]->Fnt[i].x=atoi( tmp );
 106      cutItem( param,tmp,',',1 ); Fonts[id]->Fnt[i].y=atoi( tmp );
 107      cutItem( param,tmp,',',2 ); Fonts[id]->Fnt[i].sx=atoi( tmp );
 108      cutItem( param,tmp,',',3 ); Fonts[id]->Fnt[i].sy=atoi( tmp );
 109      mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[font]  char: '%s' params: %d,%d %dx%d\n",command,Fonts[id]->Fnt[i].x,Fonts[id]->Fnt[i].y,Fonts[id]->Fnt[i].sx,Fonts[id]->Fnt[i].sy );
 110     }
 111     else
 112      {
 113       if ( !strcmp( command,"image" ) )
 114        {
 115         av_strlcpy( tmp,path,sizeof( tmp )  ); av_strlcat( tmp,param,sizeof( tmp ) );
 116         mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[font] font imagefile: %s\n",tmp );
 117         if ( skinBPRead( tmp,&Fonts[id]->Bitmap ) ) return -4;
 118        }
 119      }
 120    }
 121
 122  return 0;
 123 }
 124
 125 int fntFindID( char * name )
 126 {
 127  int i;
 128  for ( i=0;i < 25;i++ )
 129    if ( Fonts[i] )
 130      if ( !strcmp( name,Fonts[i]->name ) ) return i;
 131  return -1;
 132 }
 133
 134 int fntTextWidth( int id,char * str )
 135 {
 136  int size = 0;
 137  int i;
 138
 139  if ( ( !Fonts[id] )||( !str[0] ) ) return 0;
 140
 141  for ( i=0;i < (int)strlen( str );i++ )
 142   {
 143    unsigned char c = (unsigned char)str[i];
 144    if ( Fonts[id]->Fnt[c].sx == -1 ) c = ' ';
 145    size+= Fonts[id]->Fnt[ c ].sx;
 146   }
 147  return size;
 148 }
 149
 150 int fntTextHeight( int id,char * str )
 151 {
 152  int max = 0,i;
 153
 154  if ( ( !Fonts[id] )||( !str[0] ) ) return 0;
 155
 156  for ( i=0;i < (int)strlen( str );i++ )
 157   {
 158    int h;
 159    unsigned char c = (unsigned char)str[i];
 160    if ( Fonts[id]->Fnt[c].sx == -1 ) c = ' ';
 161    h = Fonts[id]->Fnt[c].sy;
 162    if ( h > max ) max=h;
 163   }
 164  return max;
 165 }
 166
 167 txSample * fntRender( wItem * item,int px,const char * fmt,... )
 168 {
 169  va_list         ap;
 170  unsigned char   p[512];
 171  unsigned int    c;
 172  int             i, dx = 0, tw, fbw, iw, id, ofs;
 173  int             x,y,fh,fw,fyc,yc;
 174  uint32_t      * ibuf;
 175  uint32_t      * obuf;
 176
 177  va_start( ap,fmt );
 178  vsnprintf( p,512,fmt,ap );
 179  va_end( ap );
 180
 181  iw=item->width;
 182  id=item->fontid;
 183
 184  if ( ( !item )||
 185       ( !Fonts[id] )||
 186       ( !p[0] )||
 187       ( !fntTextWidth( id,p ) ) ) return NULL;
 188
 189  tw=fntTextWidth( id,p );
 190  fbw=Fonts[id]->Bitmap.Width;
 191
 192  if ( item->Bitmap.Image == NULL )
 193   {
 194    item->Bitmap.Height=item->height=fntTextHeight( id,p );
 195    item->Bitmap.Width=item->width=iw;
 196    item->Bitmap.ImageSize=item->height * iw * 4;
 197    if ( !item->Bitmap.ImageSize ) return NULL;
 198    item->Bitmap.BPP=32;
 199    item->Bitmap.Image=malloc( item->Bitmap.ImageSize );
 200   }
 201
 202  obuf=(uint32_t *)item->Bitmap.Image;
 203  ibuf=(uint32_t *)Fonts[id]->Bitmap.Image;
 204
 205  for ( i=0;i < item->Bitmap.ImageSize / 4;i++ ) obuf[i]=0xff00ff;
 206
 207  if ( tw <= iw )
 208   {
 209    switch ( item->align )
 210     {
 211      default:
 212      case fntAlignLeft:   dx=0; break;
 213      case fntAlignCenter: dx=( iw - fntTextWidth( id,p ) ) / 2; break;
 214      case fntAlignRight:  dx=iw - fntTextWidth( id,p ); break;
 215     }
 216
 217   } else dx+=px;
 218
 219  ofs=dx;
 220
 221  for ( i=0;i < (int)strlen( p );i++ )
 222   {
 223    c=(unsigned int)p[i];
 224    fw=Fonts[id]->Fnt[c].sx;
 225
 226    if ( fw == -1 ) { c=32; fw=Fonts[id]->Fnt[c].sx; }
 227
 228    fh=Fonts[id]->Fnt[c].sy;
 229    fyc=Fonts[id]->Fnt[c].y * fbw + Fonts[id]->Fnt[c].x;
 230    yc=dx;
 231
 232    if ( dx >= 0 )
 233     for ( y=0;y < fh;y++ )
 234      {
 235       for ( x=0; x < fw;x++ )
 236        if ( dx + x >= 0 && dx + x < iw ) obuf[yc + x]=ibuf[ fyc + x ];
 237       fyc+=fbw;
 238       yc+=iw;
 239      }
 240    dx+=fw;
 241   }
 242
 243  if ( ofs > 0 && tw > item->width )
 244   {
 245    dx=ofs;
 246    for ( i=(int)strlen( p );i > 0;i-- )
 247     {
 248      c=(unsigned int)p[i];
 249      fw=Fonts[id]->Fnt[c].sx;
 250
 251      if ( fw == -1 ) { c=32; fw=Fonts[id]->Fnt[c].sx; }
 252
 253      fh=Fonts[id]->Fnt[c].sy;
 254      fyc=Fonts[id]->Fnt[c].y * fbw + Fonts[id]->Fnt[c].x;
 255
 256      dx-=fw; yc=dx;
 257      if ( dx >= 0 )
 258       for ( y=0;y < fh;y++ )
 259        {
 260         for ( x=fw - 1;x >= 0;x-- )
 261          if ( dx + x >= 0 && dx + x < iw ) obuf[yc + x]=ibuf[fyc + x];
 262         fyc+=fbw;
 263         yc+=iw;
 264        }
 265     }
 266   }
 267
 268  return &item->Bitmap;
 269 }