// Copyright 2015 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "ui/gfx/font_fallback.h" #include #include #include "base/strings/string_piece.h" #include "base/strings/utf_string_conversions.h" #include "base/trace_event/trace_event.h" #include "build/build_config.h" #include "third_party/abseil-cpp/absl/types/optional.h" #include "ui/gfx/font.h" #include "ui/gfx/font_fallback_skia_impl.h" #include "ui/gfx/font_render_params.h" #include "ui/gfx/platform_font.h" namespace gfx { std::vector GetFallbackFonts(const Font& font) { return std::vector(); } bool GetFallbackFont(const Font& font, const std::string& locale, base::StringPiece16 text, Font* result) { TRACE_EVENT0("fonts", "gfx::GetFallbackFont"); if (text.empty()) return false; sk_sp fallback_typeface = GetSkiaFallbackTypeface(font, locale, text); if (!fallback_typeface) return false; // Fallback needs to keep the exact SkTypeface, as re-matching the font using // family name and styling information loses access to the underlying platform // font handles and is not guaranteed to result in the correct typeface, see // https://crbug.com/1003829 *result = Font(PlatformFont::CreateFromSkTypeface( std::move(fallback_typeface), font.GetFontSize(), absl::nullopt)); return true; } } // namespace gfx