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/****************************************************************************/
/* */
/* The FreeType project -- a free and portable quality TrueType renderer. */
/* */
/* Copyright 1996-2000, 2003, 2004, 2005, 2006 by */
/* D. Turner, R.Wilhelm, and W. Lemberg */
/* */
/* */
/* FTView - a simple font viewer. */
/* */
/* This is a new version using the MiGS graphics subsystem for */
/* blitting and display. */
/* */
/* Press F1 when running this program to have a list of key-bindings */
/* */
/****************************************************************************/
#include <freetype/config/ftheader.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "ftcommon.h"
#include <math.h>
/* the following header shouldn't be used in normal programs */
#include FT_SYNTHESIS_H
#define MAXPTSIZE 500 /* dtp */
#ifdef CEIL
#undef CEIL
#endif
#define CEIL( x ) ( ( (x) + 63 ) >> 6 )
#define INIT_SIZE( size, start_x, start_y, step_x, step_y, x, y ) \
do { \
start_x = 4; \
start_y = CEIL( size->metrics.height ); \
step_x = CEIL( size->metrics.max_advance ); \
step_y = CEIL( size->metrics.height ) + 4; \
\
x = start_x; \
y = start_y; \
} while ( 0 )
#define X_TOO_LONG( x, size, bitmap) \
( ( x ) + ( ( size )->metrics.max_advance >> 6 ) > bitmap->width )
#define Y_TOO_LONG( y, size, bitmap) \
( ( y ) >= bitmap->rows )
grBitmap *bit;
static struct status_
{
FT_Encoding encoding;
int res;
int ptsize; /* current point size */
int font_index;
int Num; /* current first index */
int Fail;
} status = { FT_ENCODING_NONE, 72, 24, 0, 0, 0 };
static FTDemo_Handle* handle;
static FT_Error
Render_All( int num_indices,
int first_index )
{
int start_x, start_y, step_x, step_y, x, y;
int i;
FT_Size size;
error = FTDemo_Get_Size(handle, &size);
if ( error )
{
/* probably a non-existent bitmap font size */
return error;
}
INIT_SIZE( size, start_x, start_y, step_x, step_y, x, y );
i = first_index;
while ( i < num_indices )
{
int gindex;
if ( handle->encoding == FT_ENCODING_NONE )
gindex = i;
else
gindex = FTDemo_Get_Index( handle, i );
error = FTDemo_Draw_Index( handle, bit, gindex, &x, &y );
if ( error )
status.Fail++;
else if ( X_TOO_LONG( x, size, bit ) )
{
x = start_x;
y += step_y;
if ( Y_TOO_LONG( y, size, bit ) )
break;
}
i++;
}
return FT_Err_Ok;
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** REST OF THE APPLICATION/PROGRAM *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
static void
event_font_change()
{
int num_indices;
status.font_index = 0;
status.Num = 0;
FTDemo_Set_Current_Font(handle, handle->fonts[status.font_index]);
FTDemo_Set_Current_Pointsize(handle, status.ptsize, status.res);
FTDemo_Update_Current_Flags(handle);
num_indices = handle->current_font->num_indices;
if(status.Num >= num_indices)
status.Num = num_indices - 1;
}
int
main( int argc,
char* argv[] )
{
if(argc != 3)
exit(1);
/* Initialize engine */
handle = FTDemo_New(status.encoding);
FTDemo_Install_Font(handle, argv[1]);
if(handle->num_fonts == 0)
PanicZ( "could not find/open any font file" );
bit = FTDemo_Display_New();
if(!bit)
PanicZ( "could not allocate display surface" );
status.Fail = 0;
event_font_change();
FTDemo_Update_Current_Flags(handle);
FTDemo_Display_Clear(bit);
Render_All(handle->current_font->num_indices, status.Num);
FILE *f = fopen(argv[2], "wb");
fprintf(f, "P6\n%d %d\n255\n", bit->width, bit->rows);
fwrite(bit->buffer, bit->width * bit->rows * 3, 1, f);
fclose(f);
FTDemo_Display_Done(bit);
FTDemo_Done(handle);
return 0;
}
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