af_face_globals_get_metrics( AF_FaceGlobals globals,
FT_UInt gindex,
AF_ScriptMetrics *ametrics )
{
AF_ScriptMetrics metrics = NULL;
FT_UInt gidx;
AF_ScriptClass clazz;
FT_Error error = AF_Err_Ok;
if ( gindex >= globals->glyph_count )
{
error = AF_Err_Invalid_Argument;
goto Exit;
}
gidx = globals->glyph_scripts[gindex];
clazz = af_script_classes[gidx];
metrics = globals->metrics[clazz->script];
if ( metrics == NULL )
{
/* create the global metrics object when needed */
FT_Memory memory = globals->face->memory;
if ( FT_ALLOC( metrics, clazz->script_metrics_size ) )
goto Exit;
metrics->clazz = clazz;
if ( clazz->script_metrics_init )
{
error = clazz->script_metrics_init( metrics, globals->face );
if ( error )
{
if ( clazz->script_metrics_done )
clazz->script_metrics_done( metrics );
FT_FREE( metrics );
goto Exit;
}
}
globals->metrics[clazz->script] = metrics;
}
Exit:
*ametrics = metrics;
return error;
}
af_face_globals_get_metrics( AF_FaceGlobals globals,
FT_UInt gindex,
FT_UInt options,
AF_ScriptMetrics *ametrics )
{
AF_ScriptMetrics metrics = NULL;
FT_UInt gidx;
AF_ScriptClass clazz;
FT_UInt script = options & 15;
const FT_Offset script_max = sizeof ( AF_SCRIPT_CLASSES_GET ) /
sizeof ( AF_SCRIPT_CLASSES_GET[0] );
FT_Error error = AF_Err_Ok;
if ( gindex >= (FT_ULong)globals->glyph_count )
{
error = AF_Err_Invalid_Argument;
goto Exit;
}
gidx = script;
if ( gidx == 0 || gidx + 1 >= script_max )
gidx = globals->glyph_scripts[gindex] & AF_SCRIPT_LIST_NONE;
clazz = AF_SCRIPT_CLASSES_GET[gidx];
if ( script == 0 )
script = clazz->script;
metrics = globals->metrics[clazz->script];
if ( metrics == NULL )
{
/* create the global metrics object when needed */
FT_Memory memory = globals->face->memory;
if ( FT_ALLOC( metrics, clazz->script_metrics_size ) )
goto Exit;
metrics->clazz = clazz;
if ( clazz->script_metrics_init )
{
error = clazz->script_metrics_init( metrics, globals->face );
if ( error )
{
if ( clazz->script_metrics_done )
clazz->script_metrics_done( metrics );
FT_FREE( metrics );
goto Exit;
}
}
globals->metrics[clazz->script] = metrics;
}
Exit:
*ametrics = metrics;
return error;
}