Here is the sample code that I used.
Please change the value of inFileName[], when you run the program.
The output is generated in a output.txt file.
I observed it by enabling WORD-WRAP in the Notepad++ and then,
zooming out.
/* example1.c */
/* */
/* This small program shows how to print a string with the */
/* FreeType 2 library. */
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <string.h>
#include <math.h>
#include "ft2build.h"
#include FT_FREETYPE_H
#define WIDTH 640
#define HEIGHT 480
/* origin is the upper left corner */
unsigned char image[HEIGHT][WIDTH];
/* Replace this function with something useful. */
void
draw_bitmap( FT_Bitmap* bitmap,
FT_Int x,
FT_Int y)
{
FT_Int i, j, p, q;
FT_Int x_max = x + bitmap->width;
FT_Int y_max = y + bitmap->rows;
int val = 0;
for ( i = x, p = 0; i < x_max; i++, p++ )
{
for ( j = y, q = 0; j < y_max; j++, q++ )
{
if ( i < 0 || j < 0 ||
i >= WIDTH || j >= HEIGHT )
continue;
image[j][i] |= bitmap->buffer[q * bitmap->width + p];
if(bitmap->buffer[q * bitmap->width + p] > 0) {
val |= bitmap->buffer[q * bitmap->width + p];
}
}
}
}
void
show_image( void )
{
int i, j;
FILE *fp1 = fopen("Output.txt", "w");
for ( i = 0; i < HEIGHT; i++ )
{
for ( j = 0; j < WIDTH; j++ )
/* putchar( image[i][j] == 0 ? ' '
: image[i][j] < 128 ? '+'
: '*' );
putchar( '\n' );
*/
{
if(image[i][j] == 0)
fprintf(fp1, "%c", ' ');
else if (image[i][j] < 128)
fprintf(fp1, "%c", '+');
else
fprintf(fp1, "%c", '*');
}
fprintf(fp1, "%c", '\n');
}
fclose(fp1);
}
int main( int argc, char** argv )
{
FT_Library library;
FT_Face face;
FT_GlyphSlot slot;
FT_Matrix matrix; /* transformation matrix */
FT_Vector pen; /* untransformed origin */
FT_Error error;
char fontName[256];
char
inFileName[]="D:\\FREETYPE\\freetype-2.4.2\\freetype-2.4.2\\builds\\win32\\vc2005\\arial.ttf";
char text[] = "Font Experts";
double angle;
int target_height;
int n, num_chars;
num_chars = strlen( (char*)text );
angle = 0;//( 25.0 / 360 ) * 3.14159 * 2; /* use 25 degrees
*/
target_height = HEIGHT;
error = FT_Init_FreeType( &library ); /* initialize
library */
if(error)
{
fprintf ( stderr, "FT_Init_FreeType: failed" );
exit( 1 );
}
error = FT_New_Face( library, inFileName, 0, &face );/* create face
object
*/
if(error)
{
fprintf ( stderr, "FT_New_Face: failed" );
exit( 1 );
}
/* use 50pt at 100dpi */
error = FT_Set_Char_Size( face, 50 * 64, 0,
100, 0 ); /* set character size */
/* error handling omitted */
slot = face->glyph;
/* set up matrix */
matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
/* the pen position in 26.6 cartesian space coordinates; */
/* start at (300,200) relative to the upper left corner */
pen.x = 300 * 64;
pen.y = ( target_height - 200 ) * 64;
for ( n = 0; n < num_chars; n++ )
{
/* set transformation */
FT_Set_Transform( face, &matrix, &pen );
/* load glyph image into the slot (erase previous one) */
error = FT_Load_Char( face, text[n], FT_LOAD_RENDER );
if ( error )
continue; /* ignore errors */
/* now, draw to our target surface (convert position) */
draw_bitmap( &slot->bitmap,
slot->bitmap_left,
target_height - slot->bitmap_top );
/* increment pen position */
pen.x += slot->advance.x;
pen.y += slot->advance.y;
}
show_image();
FT_Done_Face ( face );
FT_Done_FreeType( library );
return 0;
}
/* EOF */
On Thu, Mar 7, 2013 at 11:10 AM, suzuki toshiya <
address@hidden> wrote:
Hi,
Could you post some sample source that you could display a blank
screen?
Regards,
mpsuzuki
Parth Kanungo wrote:
Hi all,
I used the sample code on the FreeType Documentation Page (PART-1). To
run
the code, when I used the libraries from GTK+ bundle, my output was
perfect.
However, when I created freetype.lib myself from the downloaded source
code
and used it, the output showed a blank screen.
To ensure that there was no version mismatch, I checked from the GTK
website (http://www.gtk.org/download/win32.php) and found that GTK+
bundle
currently uses freetype 2.4.2 version. Hence, I used that version of
freetype to build the freetype.lib. But, I still face the same issue.
Can anyone help me out here ?
Thanks a lot.
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--
Parth Kanungo
Software Engineer,
Samsung R&D Institute Delhi
Sector-62, Noida
"Life would be flat without dreams. I think it's really important to
dream
– and then to chase those dreams. I really believe in this because it's
this dreaming that makes me work so hard." - Sachin Tendulkar