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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/resizable_label.zig
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@ -34,7 +34,7 @@ const CharVertices = struct {
};
face: ft.Face,
char_map: std.AutoHashMap(u8, CharVertices),
char_map: std.AutoHashMap(u21, CharVertices),
allocator: std.mem.Allocator,
tessellator: Tessellator,
white_texture: UVData,
@ -66,7 +66,7 @@ pub fn writer(label: *ResizableLabel, app: *App, position: Vec4, text_color: Vec
pub fn init(self: *ResizableLabel, lib: ft.Library, font_path: []const u8, face_index: i32, allocator: std.mem.Allocator, white_texture: UVData) !void {
self.* = ResizableLabel{
.face = try lib.newFace(font_path, face_index),
.char_map = std.AutoHashMap(u8, CharVertices).init(allocator),
.char_map = std.AutoHashMap(u21, CharVertices).init(allocator),
.allocator = allocator,
.tessellator = undefined,
.white_texture = white_texture,
@ -94,7 +94,11 @@ pub fn deinit(label: *ResizableLabel) void {
// FIXME: many useless allocations for the arraylists
fn write(ctx: WriterContext, bytes: []const u8) WriterError!usize {
var offset = Vec4{ 0, 0, 0, 0 };
for (bytes) |char| {
var c: usize = 0;
while (c < bytes.len) {
const len = std.unicode.utf8ByteSequenceLength(bytes[c]) catch unreachable;
const char = std.unicode.utf8Decode(bytes[c..(c + len)]) catch unreachable;
c += len;
switch (char) {
'\n' => {
offset[0] = 0;