86 lines
2.8 KiB
Zig
86 lines
2.8 KiB
Zig
const std = @import("std");
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const c = @import("c.zig");
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const BitmapGlyph = @import("BitmapGlyph.zig");
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const Stroker = @import("Stroker.zig");
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const types = @import("types.zig");
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const Error = @import("error.zig").Error;
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const intToError = @import("error.zig").intToError;
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const Glyph = @This();
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pub const BBoxMode = enum(u2) {
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// https://freetype.org/freetype2/docs/reference/ft2-glyph_management.html#ft_glyph_bbox_mode
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// both `unscaled` and `subpixel` constants are set to 0
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unscaled_or_subpixels = c.FT_GLYPH_BBOX_UNSCALED,
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gridfit = c.FT_GLYPH_BBOX_GRIDFIT,
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truncate = c.FT_GLYPH_BBOX_TRUNCATE,
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pixels = c.FT_GLYPH_BBOX_PIXELS,
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};
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pub const GlyphMetrics = c.FT_Glyph_Metrics;
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pub const GlyphFormat = enum(u32) {
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none = c.FT_GLYPH_FORMAT_NONE,
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composite = c.FT_GLYPH_FORMAT_COMPOSITE,
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bitmap = c.FT_GLYPH_FORMAT_BITMAP,
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outline = c.FT_GLYPH_FORMAT_OUTLINE,
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plotter = c.FT_GLYPH_FORMAT_PLOTTER,
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svg = c.FT_GLYPH_FORMAT_SVG,
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};
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handle: c.FT_Glyph,
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pub fn init(handle: c.FT_Glyph) Glyph {
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return Glyph{ .handle = handle };
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}
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pub fn deinit(self: Glyph) void {
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c.FT_Done_Glyph(self.handle);
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}
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pub fn clone(self: Glyph) Error!Glyph {
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var res = std.mem.zeroes(c.FT_Glyph);
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try intToError(c.FT_Glyph_Copy(self.handle, &res));
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return Glyph.init(res);
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}
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pub fn transform(self: Glyph, matrix: ?types.Matrix, delta: ?types.Vector) Error!void {
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var m = matrix orelse std.mem.zeroes(types.Matrix);
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var d = delta orelse std.mem.zeroes(types.Vector);
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try intToError(c.FT_Glyph_Transform(self.handle, @ptrCast(*c.FT_Matrix, &m), @ptrCast(*c.FT_Vector, &d)));
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}
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pub fn getCBox(self: Glyph, bbox_mode: BBoxMode) types.BBox {
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var res = std.mem.zeroes(types.BBox);
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c.FT_Glyph_Get_CBox(self.handle, @enumToInt(bbox_mode), @ptrCast(*c.FT_BBox, &res));
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return res;
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}
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pub fn toBitmap(self: Glyph, render_mode: types.RenderMode, origin: ?types.Vector) Error!BitmapGlyph {
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var res = self.handle;
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var o = origin orelse std.mem.zeroes(types.Vector);
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try intToError(c.FT_Glyph_To_Bitmap(&res, @enumToInt(render_mode), @ptrCast(*c.FT_Vector, &o), 0));
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return BitmapGlyph.init(@ptrCast(c.FT_BitmapGlyph, self.handle));
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}
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pub fn stroke(self: Glyph, stroker: Stroker) Error!Glyph {
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var res = self.handle;
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try intToError(c.FT_Glyph_Stroke(&res, stroker.handle, 0));
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return Glyph.init(res);
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}
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pub fn strokeBorder(self: Glyph, stroker: Stroker, inside: bool) Error!Glyph {
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var res = self.handle;
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try intToError(c.FT_Glyph_StrokeBorder(&res, stroker.handle, if (inside) 1 else 0, 0));
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return Glyph.init(res);
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}
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pub fn format(self: Glyph) GlyphFormat {
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return @intToEnum(GlyphFormat, self.handle.*.format);
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}
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pub fn advanceX(self: Glyph) isize {
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return self.handle.*.advance.x;
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}
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pub fn advanceY(self: Glyph) isize {
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return self.handle.*.advance.y;
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}
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