Applied-Software/ghostty
5
0
Fork 0
mirror of https://github.com/ghostty-org/ghostty.git synced 2025-07-14 15:56:13 +03:00
Code Issues Packages Projects Releases Wiki Activity

font/freetype: CBDT/CBLC tables imply color

Browse Source
This commit is contained in:
Mitchell Hashimoto
2024-05-28 20:40:46 -07:00
parent 4daa49fe27
commit adaeffb2b5
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
pkg/freetype/face.zig
View File

@ -135,6 +135,15 @@ pub const Face = struct {
return buf;
}
/// Check whether a given SFNT table is available in a face.
pub fn hasSfntTable(self: Face, tag: Tag) bool {
const tag_u64: u64 = @intCast(@as(u32, @bitCast(tag)));
var len: c_ulong = 0;
const res = c.FT_Load_Sfnt_Table(self.handle, tag_u64, 0, null, &len);
_ = intToError(res) catch return false;
return len != 0;
}
/// Retrieve the font variation descriptor for a font.
pub fn getMMVar(self: Face) Error!*c.FT_MM_Var {
var result: *c.FT_MM_Var = undefined;

12
src/font/face/freetype.zig
View File

@ -216,6 +216,11 @@ pub const Face = struct {
// sbix table is always true for now
if (self.face.hasSBIX()) return true;
// CBDT/CBLC tables always imply colorized glyphs.
// These are used by Noto.
if (self.face.hasSfntTable(freetype.Tag.init("CBDT"))) return true;
if (self.face.hasSfntTable(freetype.Tag.init("CBLC"))) return true;
// Otherwise, load the glyph and see what format it is in.
self.face.loadGlyph(glyph_id, .{
.render = true,
@ -698,6 +703,13 @@ test "color emoji" {
_ = try ft_font.renderGlyph(alloc, &atlas, ft_font.glyphIndex('🥸').?, .{});
// Make sure this glyph has color
{
try testing.expect(ft_font.hasColor());
const glyph_id = ft_font.glyphIndex('🥸').?;
try testing.expect(ft_font.isColorGlyph(glyph_id));
}
// resize
{
const glyph = try ft_font.renderGlyph(alloc, &atlas, ft_font.glyphIndex('🥸').?, .{