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examples/gkurve: support for UTF32 characters

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This commit is contained in:
PiergiorgioZagaria 2022-06-05 18:05:15 +02:00 • committed by Stephen Gutekanst
parent 98138dd2fa
commit c1b3996b63
3 changed files with 18 additions and 9 deletions
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10
examples/gkurve/label.zig
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@ -21,7 +21,7 @@ const GlyphInfo = struct {
face: ft.Face,
size: i32,
char_map: std.AutoHashMap(u8, GlyphInfo),
char_map: std.AutoHashMap(u21, GlyphInfo),
allocator: std.mem.Allocator,
const WriterContext = struct {
@ -48,7 +48,7 @@ pub fn init(lib: ft.Library, font_path: []const u8, face_index: i32, char_size:
return Label{
.face = try lib.newFace(font_path, face_index),
.size = char_size,
.char_map = std.AutoHashMap(u8, GlyphInfo).init(allocator),
.char_map = std.AutoHashMap(u21, GlyphInfo).init(allocator),
.allocator = allocator,
};
}
@ -60,7 +60,11 @@ pub fn deinit(label: *Label) void {
fn write(ctx: WriterContext, bytes: []const u8) WriterError!usize {
var offset = Vec2{ 0, 0 };
for (bytes) |char| {
var j: usize = 0;
while (j < bytes.len) {
const len = std.unicode.utf8ByteSequenceLength(bytes[j]) catch unreachable;
const char = std.unicode.utf8Decode(bytes[j..(j + len)]) catch unreachable;
j += len;
switch (char) {
'\n' => {
offset[0] = 0;