6072ae7784
* fix(windows): 修复临时日语 R 模式无法输入长音符 * fix(server,windows): 临时日语策略每键只算一次，并去掉多余的帧 - Server 在 HandleImeKey 开头按本次按键所属客户端算一次策略，不再每个谓词都查活动客户端、加锁、构造 payload 再解析回来。 - 普通激活只补发 TemporaryJapanesePolicyChanged；整套输入模式状态（含语言栏刷新）仍只在 FocusRestored 时发送。 - 配置重载时输入方案变了由 ApplyConfiguredInputScheme 统一广播，不再重复广播策略。 - TSF 的 WaitForProtocolReady 不再清零策略：worker 管道先于 Main 注册，可能已收到本次连接的策略；断开时已有清零路径。 --------- Co-authored-by: ranly <ran618ly210805@qq.com> Co-authored-by: fanlusky <1730976608@qq.com>
91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
#pragma once
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#include <cstddef>
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#include <cstdint>
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// Shared TSF/Server classification of the display-only R prefix. The engine
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// receives the body without R. Policy is supplied by the Server after negotiation.
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namespace FanyImeTemporaryJapanese
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{
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using Policy = std::uint8_t;
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inline constexpr Policy Allowed = 1;
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inline constexpr Policy EnglishCandidates = 2;
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constexpr bool IsValidPayload(wchar_t ch)
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{
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return ch >= L'0' && ch <= L'3';
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}
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constexpr Policy FromPayload(wchar_t ch)
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{
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return IsValidPayload(ch) ? Policy(ch - L'0') : 0;
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}
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constexpr wchar_t ToPayload(Policy policy)
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{
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return wchar_t(L'0' + (policy & 3));
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}
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constexpr Policy ToggleEnglish(Policy policy)
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{
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return policy ^ EnglishCandidates;
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}
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constexpr Policy LeaveEnglish(Policy policy)
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{
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return policy & ~EnglishCandidates;
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}
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template <typename Char> constexpr bool IsMode(bool japanese, Policy policy, const Char *raw, std::size_t length)
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{
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return japanese || ((policy & Allowed) != 0 && (policy & EnglishCandidates) == 0 && raw != nullptr && length > 0 &&
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raw[0] == Char('R'));
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}
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// R is a display-only mode prefix. Caret positions in the romaji body start at 1.
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template <typename Char>
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constexpr std::size_t MinimumCaret(bool japanese, Policy policy, const Char *raw, std::size_t length)
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{
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return !japanese && IsMode(false, policy, raw, length) ? 1 : 0;
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}
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enum class KeyAction
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{
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None,
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LongVowel,
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Punctuation
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};
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// Virtual-key and modifier values are the existing Windows pipe contract values.
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// Decide before candidate paging, word-to-character conversion and punctuation commit.
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template <typename Char>
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constexpr KeyAction ClassifyKey(std::uint32_t key, std::uint32_t character, std::uint32_t modifiers, bool japanese,
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Policy policy, const Char *raw, std::size_t length, bool composition_active)
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{
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if ((modifiers & 6u) != 0 || (key != 0xBD && key != 0xBB) || !IsMode(japanese, policy, raw, length))
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return KeyAction::None;
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if (key == 0xBD && character == '-')
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return KeyAction::LongVowel;
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return length > 0 && composition_active ? KeyAction::Punctuation : KeyAction::None;
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}
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template <typename Char>
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constexpr std::size_t ClampCaret(bool japanese, Policy policy, const Char *raw, std::size_t length, std::size_t caret)
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{
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const auto minimum = MinimumCaret(japanese, policy, raw, length);
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return caret < minimum ? minimum : (caret > length ? length : caret);
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}
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template <typename Char>
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constexpr bool CanBackspace(bool japanese, Policy policy, const Char *raw, std::size_t length, std::size_t caret)
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{
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const auto minimum = MinimumCaret(japanese, policy, raw, length);
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return caret > 0 && caret <= length && !(caret == minimum && length > minimum);
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}
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template <typename Char>
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constexpr bool CanMoveCaret(bool japanese, Policy policy, const Char *raw, std::size_t length, std::int64_t next)
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{
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return next >= static_cast<std::int64_t>(MinimumCaret(japanese, policy, raw, length)) &&
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next <= static_cast<std::int64_t>(length);
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}
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template <typename Char> constexpr bool IsValidPolicyFrame(const Char *data, std::size_t capacity)
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{
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return data != nullptr && capacity >= 2 && IsValidPayload(data[0]) && data[1] == Char(0);
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}
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} // namespace FanyImeTemporaryJapanese
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