renati/castle
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

media: update stbtt bindings

Browse Source
This commit is contained in:
Szymon Nowakowski
2026-09-19 22:50:28 +02:00
parent ff87d58319
commit af8d725e0c
1 changed files with 39 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
packages/media/src/stbtt.zig
View File

@@ -137,19 +137,30 @@ pub const Font = opaque {
stbtt.allocator.destroy(info);
}
pub fn findGlyphIndex(self: *const Font, codepoint: u21) ?u32 {
pub fn findGlyphIndex(self: *const Font, codepoint: u21) ?u16 {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
const res = import.stbtt_FindGlyphIndex(info, codepoint);
return if (res != 0) @intCast(res) else null;
}
pub fn getGlyphBox(self: *const Font, glyph: u32) ?GlyphBox {
pub fn getGlyphMetrics(self: *const Font, glyph: u16) GlyphMetrics {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
var advance_width: c_int = undefined;
var left_side_bearing: c_int = undefined;
import.stbtt_GetGlyphHMetrics(info, glyph, &advance_width, &left_side_bearing);
return .{
.advance_width = @intCast(advance_width),
.left_side_bearing = @intCast(left_side_bearing),
};
}
pub fn getGlyphBox(self: *const Font, glyph: u16) ?GlyphBox {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
var x0: c_int = undefined;
var y0: c_int = undefined;
var x1: c_int = undefined;
var y1: c_int = undefined;
const res = import.stbtt_GetGlyphBox(info, @intCast(glyph), &x0, &y0, &x1, &y1);
const res = import.stbtt_GetGlyphBox(info, glyph, &x0, &y0, &x1, &y1);
return if (res != 0) .{
.x_min = @intCast(x0),
.y_min = @intCast(y0),
@@ -158,6 +169,26 @@ pub const Font = opaque {
} else null;
}
pub fn isGlyphEmpty(self: *const Font, glyph: u16) bool {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
const res = import.stbtt_IsGlyphEmpty(info, glyph);
return res != 0;
}
pub fn getGlyphShape(self: *const Font, glyph: u16) []import.stbtt_vertex {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
var vertices_ptr: [*]import.stbtt_vertex = undefined;
const vertices_len = @as(usize, @intCast(import.stbtt_GetGlyphShape(info, glyph, &vertices_ptr)));
return if (vertices_len == 0) &.{} else vertices_ptr[0..vertices_len];
}
pub fn freeShape(self: *const Font, vertices: []import.stbtt_vertex) void {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
if (vertices.len > 0) {
import.stbtt_FreeShape(info, vertices.ptr);
}
}
pub fn unitsPerEm(self: *const Font) u16 {
const info = @as(*const import.stbtt_fontinfo, @ptrCast(@alignCast(self)));
const res = import.stbtt_UnitsPerEm(info);
@@ -193,6 +224,11 @@ pub const GlyphBox = struct {
y_max: i16,
};
pub const GlyphMetrics = struct {
advance_width: i16,
left_side_bearing: i16,
};
// --- MALLOC INTERFACE --------------------------------------------------------
export fn castle_media_stbtt_malloc(self: *Self, size: usize) callconv(.c) VoidPtr {