| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <optional> |
| #include <unordered_set> |
| #include <vector> |
| |
| #include "flutter/fml/macros.h" |
| #include "impeller/geometry/size.h" |
| #include "impeller/typographer/font.h" |
| #include "impeller/typographer/glyph.h" |
| |
| namespace impeller { |
| |
| //------------------------------------------------------------------------------ |
| /// @brief A font along with a glyph in that font. Used in glyph atlases as |
| /// keys. |
| /// |
| struct FontGlyphPair { |
| struct Hash; |
| struct Equal; |
| |
| using Set = std::unordered_set<FontGlyphPair, Hash, Equal>; |
| using Vector = std::vector<FontGlyphPair>; |
| |
| Font font; |
| Glyph glyph; |
| |
| struct Hash { |
| std::size_t operator()(const FontGlyphPair& p) const { |
| return fml::HashCombine(p.font.GetHash(), p.glyph); |
| } |
| }; |
| struct Equal { |
| bool operator()(const FontGlyphPair& lhs, const FontGlyphPair& rhs) const { |
| return lhs.font.IsEqual(rhs.font) && lhs.glyph.index == rhs.glyph.index; |
| } |
| }; |
| }; |
| |
| } // namespace impeller |