freetype: init harfbuzz binding
This commit is contained in:
Ali Chraghi
Stephen Gutekanst
parent
04a0a79ef6
commit
82e1990009
18 changed files with 111 additions and 31 deletions
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@ -1,413 +0,0 @@
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const std = @import("std");
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const c = @import("c.zig");
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const utils = @import("utils.zig");
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const intToError = @import("error.zig").intToError;
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const Error = @import("error.zig").Error;
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const GlyphSlot = @import("freetype.zig").GlyphSlot;
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const LoadFlags = @import("freetype.zig").LoadFlags;
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const FaceFlags = @import("freetype.zig").FaceFlags;
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const StyleFlags = @import("freetype.zig").StyleFlags;
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const FSType = @import("freetype.zig").FSType;
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const OpenArgs = @import("freetype.zig").OpenArgs;
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const KerningMode = @import("freetype.zig").KerningMode;
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const Encoding = @import("freetype.zig").Encoding;
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const CharMap = @import("freetype.zig").CharMap;
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const Size = @import("freetype.zig").Size;
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const SizeRequest = @import("freetype.zig").SizeRequest;
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const BitmapSize = @import("freetype.zig").BitmapSize;
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const Matrix = @import("types.zig").Matrix;
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const BBox = @import("types.zig").BBox;
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const Vector = @import("image.zig").Vector;
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const RootTransform = @import("color.zig").RootTransform;
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const PaintFormat = @import("color.zig").PaintFormat;
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const Color = @import("color.zig").Color;
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const ClipBox = @import("color.zig").ClipBox;
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const OpaquePaint = @import("color.zig").OpaquePaint;
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const Paint = @import("color.zig").Paint;
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const PaletteData = @import("color.zig").PaletteData;
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const GlyphLayersIterator = @import("color.zig").GlyphLayersIterator;
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const Face = @This();
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pub const CharmapIterator = struct {
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face: Face,
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index: u32,
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charcode: u32,
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pub fn init(face: Face) CharmapIterator {
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var i: u32 = 0;
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const cc = c.FT_Get_First_Char(face.handle, &i);
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return .{
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.face = face,
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.index = i,
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.charcode = @intCast(u32, cc),
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};
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}
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pub fn next(self: *CharmapIterator) ?u32 {
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self.charcode = @intCast(u32, c.FT_Get_Next_Char(self.face.handle, self.charcode, &self.index));
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return if (self.index != 0)
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self.charcode
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else
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null;
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}
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};
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handle: c.FT_Face,
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pub fn deinit(self: Face) void {
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intToError(c.FT_Done_Face(self.handle)) catch |err| {
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std.log.err("mach/freetype: Failed to destroy Face: {}", .{err});
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};
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}
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pub fn attachFile(self: Face, path: []const u8) Error!void {
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return self.attachStream(.{
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.flags = .{ .path = true },
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.data = .{ .path = path },
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});
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}
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pub fn attachMemory(self: Face, bytes: []const u8) Error!void {
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return self.attachStream(.{
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.flags = .{ .memory = true },
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.data = .{ .memory = bytes },
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});
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}
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pub fn attachStream(self: Face, args: OpenArgs) Error!void {
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return intToError(c.FT_Attach_Stream(self.handle, &args.cast()));
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}
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pub fn loadGlyph(self: Face, index: u32, flags: LoadFlags) Error!void {
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return intToError(c.FT_Load_Glyph(self.handle, index, flags.cast()));
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}
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pub fn loadChar(self: Face, char: u32, flags: LoadFlags) Error!void {
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return intToError(c.FT_Load_Char(self.handle, char, flags.cast()));
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}
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pub fn setCharSize(self: Face, pt_width: i32, pt_height: i32, horz_resolution: u16, vert_resolution: u16) Error!void {
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return intToError(c.FT_Set_Char_Size(self.handle, pt_width, pt_height, horz_resolution, vert_resolution));
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}
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pub fn setPixelSizes(self: Face, pixel_width: u32, pixel_height: u32) Error!void {
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return intToError(c.FT_Set_Pixel_Sizes(self.handle, pixel_width, pixel_height));
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}
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pub fn requestSize(self: Face, req: SizeRequest) Error!void {
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var req_mut = req;
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return intToError(c.FT_Request_Size(self.handle, &req_mut));
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}
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pub fn selectSize(self: Face, strike_index: i32) Error!void {
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return intToError(c.FT_Select_Size(self.handle, strike_index));
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}
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pub fn setTransform(self: Face, matrix: ?Matrix, delta: ?Vector) Error!void {
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var matrix_mut = matrix;
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var delta_mut = delta;
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return c.FT_Set_Transform(self.handle, if (matrix_mut) |*m| m else null, if (delta_mut) |*d| d else null);
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}
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pub fn getTransform(self: Face) std.meta.Tuple(&.{ Matrix, Vector }) {
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var matrix: Matrix = undefined;
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var delta: Vector = undefined;
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c.FT_Get_Transform(self.handle, &matrix, &delta);
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return .{ matrix, delta };
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}
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pub fn getCharIndex(self: Face, char: u32) ?u32 {
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const i = c.FT_Get_Char_Index(self.handle, char);
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return if (i == 0) null else i;
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}
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pub fn getNameIndex(self: Face, name: [:0]const u8) ?u32 {
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const i = c.FT_Get_Name_Index(self.handle, name);
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return if (i == 0) null else i;
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}
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pub fn getKerning(self: Face, left_char_index: u32, right_char_index: u32, mode: KerningMode) Error!Vector {
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var kerning: Vector = undefined;
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try intToError(c.FT_Get_Kerning(self.handle, left_char_index, right_char_index, @enumToInt(mode), &kerning));
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return kerning;
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}
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pub fn getTrackKerning(self: Face, point_size: i32, degree: i32) Error!i32 {
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var kerning: i32 = 0;
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try intToError(c.FT_Get_Track_Kerning(self.handle, point_size, degree, &@intCast(c_long, kerning)));
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return kerning;
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}
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pub fn getGlyphName(self: Face, index: u32) Error![]const u8 {
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var name_buf: [30]u8 = undefined;
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try intToError(c.FT_Get_Glyph_Name(self.handle, index, &name_buf, 30));
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return std.mem.sliceTo(&name_buf, 0);
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}
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pub fn getPostscriptName(self: Face) ?[:0]const u8 {
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return if (c.FT_Get_Postscript_Name(self.handle)) |face_name|
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std.mem.span(face_name)
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else
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null;
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}
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pub fn getCharmapIterator(self: Face) CharmapIterator {
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return CharmapIterator.init(self);
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}
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pub fn selectCharmap(self: Face, encoding: Encoding) Error!void {
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return intToError(c.FT_Select_Charmap(self.handle, @enumToInt(encoding)));
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}
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pub fn setCharmap(self: Face, char_map: *CharMap) Error!void {
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return intToError(c.FT_Set_Charmap(self.handle, char_map));
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}
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pub fn getFSTypeFlags(self: Face) FSType {
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return FSType.from(@intCast(u10, c.FT_Get_FSType_Flags(self.handle)));
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}
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pub fn getCharVariantIndex(self: Face, char: u32, variant_selector: u32) ?u32 {
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return switch (c.FT_Face_GetCharVariantIndex(self.handle, char, variant_selector)) {
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0 => null,
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else => |i| i,
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};
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}
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pub fn getCharVariantIsDefault(self: Face, char: u32, variant_selector: u32) ?bool {
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return switch (c.FT_Face_GetCharVariantIsDefault(self.handle, char, variant_selector)) {
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-1 => null,
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0 => false,
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1 => true,
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else => unreachable,
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};
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}
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pub fn getVariantSelectors(self: Face) ?[]u32 {
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return if (c.FT_Face_GetVariantSelectors(self.handle)) |chars|
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@ptrCast([]u32, std.mem.sliceTo(chars, 0))
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else
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null;
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}
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pub fn getVariantsOfChar(self: Face, char: u32) ?[]u32 {
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return if (c.FT_Face_GetVariantsOfChar(self.handle, char)) |variants|
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@ptrCast([]u32, std.mem.sliceTo(variants, 0))
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else
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null;
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}
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pub fn getCharsOfVariant(self: Face, variant_selector: u32) ?[]u32 {
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return if (c.FT_Face_GetCharsOfVariant(self.handle, variant_selector)) |chars|
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@ptrCast([]u32, std.mem.sliceTo(chars, 0))
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else
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null;
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}
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pub fn getPaletteData(self: Face) Error!PaletteData {
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var p: c.FT_Palette_Data = undefined;
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try intToError(c.FT_Palette_Data_Get(self.handle, &p));
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return PaletteData{ .handle = p };
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}
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fn selectPalette(self: Face, index: u16) Error!?[]const Color {
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var color: [*:0]Color = undefined;
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try intToError(c.FT_Palette_Select(self.handle, index, &color));
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const pd = try getPaletteData();
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return self.color[0..pd.numPaletteEntries()];
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}
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pub fn setPaletteForegroundColor(self: Face, color: Color) Error!void {
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try intToError(c.FT_Palette_Set_Foreground_Color(self.handle, color));
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}
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pub fn getGlyphLayersIterator(self: Face, glyph_index: u32) GlyphLayersIterator {
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return GlyphLayersIterator.init(self, glyph_index);
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}
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pub fn getColorGlyphPaint(self: Face, base_glyph: u32, root_transform: RootTransform) ?Paint {
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var opaque_paint: OpaquePaint = undefined;
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if (c.FT_Get_Color_Glyph_Paint(self.handle, base_glyph, @enumToInt(root_transform), &opaque_paint) == 0)
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return null;
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return self.getPaint(opaque_paint);
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}
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pub fn getColorGlyphClibBox(self: Face, base_glyph: u32) ?ClipBox {
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var clib_box: ClipBox = undefined;
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if (c.FT_Get_Color_Glyph_ClipBox(self.handle, base_glyph, &clib_box) == 0)
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return null;
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return clib_box;
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}
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pub fn getPaint(self: Face, opaque_paint: OpaquePaint) ?Paint {
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var p: c.FT_COLR_Paint = undefined;
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if (c.FT_Get_Paint(self.handle, opaque_paint, &p) == 0)
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return null;
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return switch (@intToEnum(PaintFormat, p.format)) {
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.color_layers => Paint{ .color_layers = p.u.colr_layers },
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.glyph => Paint{ .glyph = p.u.glyph },
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.solid => Paint{ .solid = p.u.solid },
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.linear_gradient => Paint{ .linear_gradient = p.u.linear_gradient },
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.radial_gradient => Paint{ .radial_gradient = p.u.radial_gradient },
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.sweep_gradient => Paint{ .sweep_gradient = p.u.sweep_gradient },
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.transform => Paint{ .transform = p.u.transform },
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.translate => Paint{ .translate = p.u.translate },
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.scale => Paint{ .scale = p.u.scale },
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.rotate => Paint{ .rotate = p.u.rotate },
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.skew => Paint{ .skew = p.u.skew },
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.composite => Paint{ .composite = p.u.composite },
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.color_glyph => Paint{ .color_glyph = p.u.colr_glyph },
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};
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}
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pub fn newSize(self: Face) Error!Size {
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var s: c.FT_Size = undefined;
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try intToError(c.FT_New_Size(self.handle, &s));
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return Size{ .handle = s };
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}
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pub fn numFaces(self: Face) u32 {
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return @intCast(u32, self.handle.*.num_faces);
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}
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pub fn faceIndex(self: Face) u32 {
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return @intCast(u32, self.handle.*.face_index);
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}
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pub fn faceFlags(self: Face) FaceFlags {
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return FaceFlags.from(@intCast(u19, self.handle.*.face_flags));
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}
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pub fn styleFlags(self: Face) StyleFlags {
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return StyleFlags.from(@intCast(u2, self.handle.*.style_flags));
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}
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pub fn numGlyphs(self: Face) u32 {
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return @intCast(u32, self.handle.*.num_glyphs);
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}
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pub fn familyName(self: Face) ?[:0]const u8 {
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return if (self.handle.*.family_name) |family|
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std.mem.span(family)
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else
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null;
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}
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pub fn styleName(self: Face) ?[:0]const u8 {
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return if (self.handle.*.style_name) |style_name|
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std.mem.span(style_name)
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else
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null;
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}
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pub fn numFixedSizes(self: Face) u32 {
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return @intCast(u32, self.handle.*.num_fixed_sizes);
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}
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pub fn availableSizes(self: Face) ?BitmapSize {
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return if (self.handle.*.available_sizes != null)
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self.handle.*.available_sizes.*
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else
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null;
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}
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pub fn numCharmaps(self: Face) u32 {
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return @intCast(u32, self.handle.*.num_charmaps);
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}
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pub fn charmaps(self: Face) []const CharMap {
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return @ptrCast([]const CharMap, self.handle.*.charmaps[0..self.numCharmaps()]);
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}
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pub fn bbox(self: Face) BBox {
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return self.handle.*.bbox;
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}
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pub fn unitsPerEM(self: Face) u16 {
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return self.handle.*.units_per_EM;
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}
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pub fn ascender(self: Face) i16 {
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return self.handle.*.ascender;
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}
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pub fn descender(self: Face) i16 {
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return self.handle.*.descender;
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}
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pub fn height(self: Face) i16 {
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return self.handle.*.height;
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}
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pub fn maxAdvanceWidth(self: Face) i16 {
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return self.handle.*.max_advance_width;
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}
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pub fn maxAdvanceHeight(self: Face) i16 {
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return self.handle.*.max_advance_height;
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}
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pub fn underlinePosition(self: Face) i16 {
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return self.handle.*.underline_position;
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}
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pub fn underlineThickness(self: Face) i16 {
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return self.handle.*.underline_thickness;
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}
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pub fn glyph(self: Face) GlyphSlot {
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return .{ .handle = self.handle.*.glyph };
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}
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pub fn size(self: Face) Size {
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return Size{ .handle = self.handle.*.size };
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}
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pub fn charmap(self: Face) CharMap {
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return self.handle.*.charmap.*;
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}
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pub fn hasHorizontal(self: Face) bool {
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return c.FT_HAS_HORIZONTAL(self.handle);
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}
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pub fn hasVertical(self: Face) bool {
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return c.FT_HAS_VERTICAL(self.handle);
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}
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pub fn hasKerning(self: Face) bool {
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return c.FT_HAS_KERNING(self.handle);
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}
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pub fn hasFixedSizes(self: Face) bool {
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return c.FT_HAS_FIXED_SIZES(self.handle);
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}
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pub fn hasGlyphNames(self: Face) bool {
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return c.FT_HAS_GLYPH_NAMES(self.handle);
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}
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pub fn hasColor(self: Face) bool {
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return c.FT_HAS_COLOR(self.handle);
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}
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pub fn isScalable(self: Face) bool {
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return c.FT_IS_SCALABLE(self.handle);
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}
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pub fn isSfnt(self: Face) bool {
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return c.FT_IS_SFNT(self.handle);
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}
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pub fn isFixedWidth(self: Face) bool {
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return c.FT_IS_FIXED_WIDTH(self.handle);
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}
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pub fn isCidKeyed(self: Face) bool {
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return c.FT_IS_CID_KEYED(self.handle);
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}
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pub fn isTricky(self: Face) bool {
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return c.FT_IS_TRICKY(self.handle);
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}
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