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In the past, FTXUI switched from std::string to std::wstring to support fullwidth characters. The reasons was that fullwidth characters can be stored inside a single wchar_t. Then FTXUI added support for combining characters. A single glygh doesn't even fit a wchar_t. Instead, a glyph can be arbitrary large. The usage of wstring doesn't really fit the new model and have several drawbacks: 1. It doesn't simplify the implementation of FTXUI, because of combining characters. 2. It reduces drawing performance by 2x. 3. It increase Screen's memory allocation by 2x. This patch converts FTXUI to use std::string internally. It now exposes std::string based API. The std::wstring API remains, but is now deprecated. Tests and examples haven't been update to show the breakage is limited. They will be updated in a second set of patches. Bug: https://github.com/ArthurSonzogni/FTXUI/issues/153 Co-authored-by: Tushar Maheshwari <tushar27192@gmail.com>
28 lines
719 B
C++
28 lines
719 B
C++
#ifndef FTXUI_SCREEN_STRING_HPP
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#define FTXUI_SCREEN_STRING_HPP
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#include <string>
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#include <vector>
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namespace ftxui {
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std::string to_string(const std::wstring& s);
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std::wstring to_wstring(const std::string& s);
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template <typename T>
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std::wstring to_wstring(T s) {
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return to_wstring(std::to_string(s));
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}
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int wchar_width(wchar_t);
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int wstring_width(const std::wstring&);
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int string_width(const std::string&);
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std::vector<std::string> Utf8ToGlyphs(const std::string& input);
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} // namespace ftxui
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#endif /* end of include guard: FTXUI_SCREEN_STRING_HPP */
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// Copyright 2020 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSE file.
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