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//! A library represents the shared state that the underlying font
//! library implementation(s) require per-process.
const std = @import("std");
const Allocator = std.mem.Allocator;
const builtin = @import("builtin");
const options = @import("main.zig").options;
const freetype = @import("freetype");
const font = @import("main.zig");
/// Library implementation for the compile options.
pub const Library = switch (options.backend) {
// Freetype requires a state library
.freetype,
.fontconfig_freetype,
.coretext_freetype,
=> FreetypeLibrary,
// Some backends such as CT and Canvas don't have a "library"
.coretext,
.coretext_harfbuzz,
.coretext_noshape,
.web_canvas,
=> NoopLibrary,
};
pub const FreetypeLibrary = struct {
lib: freetype.Library,
alloc: Allocator,
/// Mutex to be held any time the library is
/// being used to create or destroy a face.
mutex: *std.Thread.Mutex,
pub const InitError = freetype.Error || Allocator.Error;
pub fn init(alloc: Allocator) InitError!Library {
const lib = try freetype.Library.init();
errdefer lib.deinit();
const mutex = try alloc.create(std.Thread.Mutex);
mutex.* = .{};
return Library{ .lib = lib, .alloc = alloc, .mutex = mutex };
}
pub fn deinit(self: *Library) void {
self.alloc.destroy(self.mutex);
self.lib.deinit();
}
};
pub const NoopLibrary = struct {
pub const InitError = error{};
pub fn init(alloc: Allocator) InitError!Library {
_ = alloc;
return Library{};
}
pub fn deinit(self: *Library) void {
_ = self;
}
};
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