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/* Copyright (C) 2000-2011 by George Williams */
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "gimage.h"
#include "string.h"
static char *pixname(int i, int ncol) {
static char one[2], two[3];
char *usable = "!#$%&'()*+,-./0123456789;:<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~ ";
static int len=0;
if ( len==0 ) len = strlen(usable);
if ( ncol<len ) {
one[0]=usable[i];
return( one );
} else {
two[0] = usable[i/len];
two[1] = usable[i%len];
return( two );
}
}
int GImageWriteXpm(GImage *gi, char *filename) {
struct _GImage *base = gi->list_len==0?gi->u.image:gi->u.images[0];
FILE *file;
char stem[256];
char *pt; uint8 *scanline;
int i,j;
if ( base->image_type!=it_index )
return(false );
if (( pt = strrchr(filename,'/'))==NULL )
strcpy(stem,filename);
else
strcpy(stem,pt+1);
if ( (pt = strchr(stem,'.'))!=NULL )
*pt = '\0';
if ((file=fopen(filename,"w"))==NULL )
return(false);
fprintf(file,"/* XPM */\n" );
fprintf(file,"static char *%s[] =\n", stem );
fprintf(file,"{\n");
fprintf(file,"/* width height ncolors chars_per_pixel */\n");
fprintf(file,"\"%d %d %d %d\"\n", (int) base->width, (int) base->height, base->clut->clut_len,
base->clut->clut_len>95?2:1 );
fprintf(file,"/* colors */\n");
for ( i=0; i<base->clut->clut_len; ++i )
fprintf(file,"\"%s c #%06x\"\n", pixname(i,base->clut->clut_len),
(int) base->clut->clut[i]);
fprintf(file,"/* image */\n");
for ( i=0; i<base->height; ++i ) {
fprintf(file,"\"" );
scanline = base->data + i*base->bytes_per_line;
for ( j=0; j<base->width; ++j )
fprintf(file,"%s", pixname(*scanline++,base->clut->clut_len));
fprintf(file,"\"%s\n", i==base->height-1?"":"," );
}
fprintf(file,"};\n" );
fflush(file);
i = ferror(file);
fclose(file);
return( i );
}
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