[HarfBuzz] Simplifying the hb-shape.cc example

[Behdad Esfahbod]

Hi Nicolas,

Can you attach a patch instead?

behdad

On 01/05/2012 04:44 PM, Nicolas Rougier wrote:
> 
> Hi,
> 
> I've been trying to simplify the hb-shape.c example from the util directory in order to remove any glib dependencies and come up with source below ( ~50 lines) but it does not seem to work (no ligature for fi):
> 
> $ hb-shape DejaVuSans.ttf "fi"
> <fi=0+1290>
> 
> $ main DejaVuSans.ttf "fi"
> <f=0+721|i=2+569>
> 
> 
> Did I do something wrong ?
> 
> 
> Nicolas
> 
> 
> main.cc
> ======
> 
> #include <stdio.h>
> #include <ft2build.h>
> #include FT_FREETYPE_H
> #include "hb-ft.h"
> 
> int main( int argc, char **argv )
> {
>     const char *text = "fi";
>     char glyph_name[30];
>     size_t i;
> 
>     FT_Library library;
>     FT_Face face;
>     FT_Init_FreeType( &library );
>     FT_New_Face( library, "./DejaVuSans.ttf", 0, &face );
>     FT_Set_Char_Size( face, (int)(32*64), 0, 72, 72 );
> 
>     hb_font_t * font = hb_ft_font_create( face, 0 );
>     hb_ft_font_set_funcs( font );
> 
>     hb_buffer_t * buffer = hb_buffer_create( );
>     hb_buffer_set_direction( buffer, HB_DIRECTION_LTR );
>     hb_buffer_add_utf8( buffer, text, strlen(text), 0, strlen(text) );
>     hb_shape( font, buffer, NULL, 0 );
>     unsigned int num_glyphs = hb_buffer_get_length (buffer);
>     hb_glyph_info_t* glyphs = hb_buffer_get_glyph_infos( buffer, 0 );
>     hb_glyph_position_t *pos = hb_buffer_get_glyph_positions( buffer, 0 );
>     hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
> 
>     for( i=0; i<num_glyphs; ++i )
>     {
>         if( i ) printf( "|" );
>         else    printf( "<" );
>         if (!FT_Get_Glyph_Name( face, glyphs[i].codepoint, glyph_name, sizeof (glyph_name) ))
>             printf( "%s", glyph_name );
>         else
>             printf( "%u", info->codepoint );
>         printf( "=%u", info->cluster );
>         if (pos->x_offset || pos->y_offset) {
>             printf("@");
>             if (pos->x_offset) printf ("%d", pos->x_offset);
>             if (pos->y_offset) printf (",%d", pos->y_offset);
>         }
>         if (pos->x_advance || pos->y_advance) {
>             printf ("+");
>             if (pos->x_advance) printf ("%d", pos->x_advance);
>             if (pos->y_advance) printf (",%d", pos->y_advance);
>         }
>         ++pos; ++info;
>     }
>     printf( ">\n" );
> 
>     hb_font_destroy(font);
>     FT_Done_Face( face );
>     FT_Done_FreeType( library );
> }
> 
> 
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