[HarfBuzz] Simplifying the hb-shape.cc example

[Behdad Esfahbod]

Nevermind.

Lemme check your code.  It would be useful to include something like this in
an examples directory.  I agree that the module util/ code is not the best
example to get started anymore.

behdad

On 01/05/2012 04:57 PM, Behdad Esfahbod wrote:
> 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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