static void add_char ( VGFont font, FT_Face face, FT_ULong c )
{
// Pango already provides us with the font index, not the glyph UNICODE
// point.
FT_Load_Glyph( face, c, FT_LOAD_DEFAULT );
FT_Outline *outline = &face->glyph->outline;
VGPath path;
path = vgCreatePath( VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
1.f, 0.f, 0, 0, VG_PATH_CAPABILITY_ALL );
// It could be a blank. If any character doesn't have a glyph, though,
// nothing is drawn by vgDrawGlyphs.
if ( outline->n_contours > 0 ) {
convert_outline( outline->points, outline->tags, outline->contours,
outline->n_contours, outline->n_points );
vgAppendPathData( path, segments_count, segments, coords );
}
VGfloat origin[] = { 0.f, 0.f };
VGfloat escapement[] = { float_from_26_6(face->glyph->advance.x),
float_from_26_6(face->glyph->advance.y) };
vgSetGlyphToPath( font, c, path, VG_TRUE, origin, escapement );
vgDestroyPath( path );
}
VCOS_STATUS_T vgft_font_convert_glyphs(VGFT_FONT_T *font, unsigned int char_height, unsigned int dpi_x, unsigned int dpi_y)
{
FT_UInt glyph_index;
FT_ULong ch;
if (FT_Set_Char_Size(font->ft_face, 0, char_height, dpi_x, dpi_y))
{
FT_Done_Face(font->ft_face);
vgDestroyFont(font->vg_font);
return VCOS_EINVAL;
}
ch = FT_Get_First_Char(font->ft_face, &glyph_index);
while (ch != 0)
{
if (FT_Load_Glyph(font->ft_face, glyph_index, FT_LOAD_DEFAULT)) {
FT_Done_Face(font->ft_face);
vgDestroyFont(font->vg_font);
return VCOS_ENOMEM;
}
VGPath vg_path;
FT_Outline *outline = &font->ft_face->glyph->outline;
if (outline->n_contours != 0) {
vg_path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
assert(vg_path != VG_INVALID_HANDLE);
convert_outline(outline->points, outline->tags, outline->contours, outline->n_contours, outline->n_points);
vgAppendPathData(vg_path, segments_count, segments, coords);
} else {
vg_path = VG_INVALID_HANDLE;
}
VGfloat origin[] = { 0.0f, 0.0f };
VGfloat escapement[] = { float_from_26_6(font->ft_face->glyph->advance.x), float_from_26_6(font->ft_face->glyph->advance.y) };
vgSetGlyphToPath(font->vg_font, glyph_index, vg_path, VG_FALSE, origin, escapement);
if (vg_path != VG_INVALID_HANDLE) {
vgDestroyPath(vg_path);
}
ch = FT_Get_Next_Char(font->ft_face, ch, &glyph_index);
}
return VCOS_SUCCESS;
}