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#ifndef lint
static char SccsId[] = "%W% %G%";
#endif
/* Module: Bitmap.c
* Subroutine: btn_ByteToBitmap() returns: unsigned char *
* Subroutine: btn_WriteBitmaps() returns: void
* Copyright: 1989 Smithsonian Astrophysical Observatory
* You may do anything you like with this file except remove
* this copyright. The Smithsonian Astrophysical Observatory
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
* Modified: {0} Michael VanHilst initial version 9 May 1989
* {n} <who> -- <does what> -- <when>
*/
#include <stdio.h>
#define ROW_WIDTH 12
/*
* Subroutine: btn_ByteToBitmap
* Purpose: given a Z image return a bitmap image
*/
unsigned char *btn_ByteToBitmap ( image, width, height, byte_width )
char *image;
int width, height;
int *byte_width;
{
unsigned char *bitmap, *map;
int wdth, row;
int line_bit, byte_end;
unsigned char bit;
char *btn_Alloc();
/* allocate the bitmap */
wdth = (width + 7) / 8;
bitmap = (unsigned char *)btn_Alloc(wdth * height, 1, "bitmap");
/* make bitmap one row at a time */
for( row = 0; row < height; row++ ) {
map = bitmap + (row * wdth);
line_bit = 0;
byte_end = 8;
/* go through one line */
while( line_bit < width ) {
bit = 1;
if( byte_end > width )
byte_end = width;
/* go through one byte */
while( line_bit < byte_end ) {
if( *image != 0 )
*map |= bit;
image++;
line_bit++;
bit = bit << 1;
}
/* advance to next byte */
byte_end += 8;
map++;
}
}
/* set byte width and return bitmap */
*byte_width = wdth;
return( bitmap );
}
/*
* Subroutine: btn_WriteBitmaps
* Purpose: write bitmap as array declaration in the file
*/
void
btn_WriteBitmaps ( file, title, ext, icon, mask, width, height, byte_width )
FILE *file;
char *title;
char *ext;
unsigned char *icon;
unsigned char *mask;
int width, height;
int byte_width;
{
int byte, row_end, map_end;
(void)fprintf(file, "#define %s_%s_width %d\n", title, ext, width);
(void)fprintf(file, "#define %s_%s_height %d\n", title, ext, height);
(void)fprintf(file, "static char %s_%s_label[] = {\n", title, ext);
map_end = byte_width * height;
row_end = ROW_WIDTH;
byte = 0;
while( byte < map_end ) {
(void)fprintf(file, " 0x%02x", icon[byte]);
if( row_end > map_end )
row_end = map_end;
while( ++byte < row_end )
(void)fprintf(file, ", 0x%02x", icon[byte]);
if( byte == map_end )
(void)fprintf(file, " };\n");
else
(void)fprintf(file,",\n");
row_end += ROW_WIDTH;
}
if( mask != NULL ) {
(void)fprintf(file, "static char %s_%s_mask[] = {\n", title, ext);
row_end = ROW_WIDTH;
byte = 0;
while( byte < map_end ) {
(void)fprintf(file, " 0x%02x", mask[byte]);
if( row_end > map_end )
row_end = map_end;
while( ++byte < row_end )
(void)fprintf(file, ", 0x%02x", mask[byte]);
if( byte == map_end )
(void)fprintf(file, " };\n");
else
(void)fprintf(file,",\n");
row_end += ROW_WIDTH;
}
}
}
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