ft_outline_glyph_init( FT_Glyph outline_glyph,
FT_GlyphSlot slot )
{
FT_OutlineGlyph glyph = (FT_OutlineGlyph)outline_glyph;
FT_Error error = FT_Err_Ok;
FT_Library library = FT_GLYPH( glyph )->library;
FT_Outline* source = &slot->outline;
FT_Outline* target = &glyph->outline;
/* check format in glyph slot */
if ( slot->format != FT_GLYPH_FORMAT_OUTLINE )
{
error = FT_Err_Invalid_Glyph_Format;
goto Exit;
}
/* allocate new outline */
error = FT_Outline_New( library, source->n_points, source->n_contours,
&glyph->outline );
if ( error )
goto Exit;
FT_Outline_Copy( source, target );
Exit:
return error;
}
PyObject *
Py_Outline_cnew(FT_Outline *outline)
{
Py_Outline *self;
self = (Py_Outline *)(&Py_Outline_Type)->tp_alloc(&Py_Outline_Type, 0);
if (self == NULL) {
return NULL;
}
self->points = NULL;
self->codes = NULL;
self->inited = 0;
if (ftpy_exc(
FT_Outline_New(get_ft_library(),
outline->n_points,
outline->n_contours,
&self->x))) {
Py_DECREF(self);
return NULL;
}
self->inited = 1;
if (ftpy_exc(
FT_Outline_Copy(outline, &self->x))) {
Py_DECREF(self);
return NULL;
}
self->base.owner = NULL;
return (PyObject *)self;
}
static
FT_Error ft_outline_glyph_copy( FT_OutlineGlyph source,
FT_OutlineGlyph target )
{
FT_Error error;
FT_Library library = FT_GLYPH( source )->library;
error = FT_Outline_New( library, source->outline.n_points,
source->outline.n_contours, &target->outline );
if ( !error )
FT_Outline_Copy( &source->outline, &target->outline );
return error;
}
FT_Error ft_OutlineStroke( FT_Library library,
FT_Outline *Outline,
int Thickness )
{
FT_Error err = 0;
FT_Outline OutlineReversed;
FT_Outline OutlineFattened;
FT_Outline OutlineStroke;
if ( Outline == NULL ) {
goto failure;
}
err = FT_Outline_New( library,
Outline->n_points,
Outline->n_contours,
&OutlineReversed );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_New( library,
Outline->n_points,
Outline->n_contours,
&OutlineFattened );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Copy( Outline, &OutlineReversed );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Copy( Outline, &OutlineFattened );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_New( library,
Outline->n_points * 2,
Outline->n_contours * 2,
&OutlineStroke );
if ( err != 0 ) {
goto failure;
}
/* Perform fattening operation */
err = FT_Outline_Embolden( &OutlineFattened, Thickness << 1 );
if ( err != 0 ) {
goto failure;
}
/* Perform reversal operation */
ft_OutlineReverse( Outline,
&OutlineReversed );
FT_Outline_Translate( &OutlineReversed, Thickness, Thickness );
/* Merge outlines */
ft_OutlineMerge( &OutlineFattened,
&OutlineReversed,
&OutlineStroke );
/* delete temporary and input outline */
err = FT_Outline_Done( library, &OutlineReversed );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Done( library, &OutlineFattened );
if ( err != 0 ) {
goto failure;
}
err = FT_Outline_Done( library, Outline );
if ( err != 0 ) {
goto failure;
}
/* finally copy the outline - its not clear from ft docs if this
does the right thing but i _think_ its correct */
memcpy( Outline, &OutlineStroke, sizeof( FT_Outline ) );
return 0;
failure:
return err;
}
