public/fidl/fuchsia.fonts/font_provider.fidl

// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library fuchsia.fonts;

using fuchsia.mem;

enum FontSlant {
  UPRIGHT = 1;
  ITALIC = 2;
};

struct FontRequest {
  // For example, "Roboto".
  string family;

  // For example, 400 is normal, 700 is bold.
  uint32 weight = 400;

  // Numeric values matching OS/2 & Windows Metrics usWidthClass table.
  // https://www.microsoft.com/typography/otspec/os2.htm
  // For example, 5 is normal.
  uint32 width = 5;

  FontSlant slant = UPRIGHT;
};

struct FontData {
  fuchsia.mem.Buffer buffer;
};

struct FontResponse {
  FontData data;
};

[Discoverable]
interface FontProvider {
  1: GetFont(FontRequest @request) -> (FontResponse? response);
};