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38d545ee17
Significantly improves the behavior of non-ASCII text input on Windows. Correctly processes incoming character events as UTF-16, and for now uses UTF-32 for the text model so that the existing index-based logic will work much more often. Future work is still needed, but this will handle far more cases correctly.
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/windows/key_event_handler.h"
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#include <windows.h>
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#include <iostream>
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#include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/json_message_codec.h"
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static constexpr char kChannelName[] = "flutter/keyevent";
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static constexpr char kKeyCodeKey[] = "keyCode";
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static constexpr char kKeyMapKey[] = "keymap";
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static constexpr char kTypeKey[] = "type";
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static constexpr char kAndroidKeyMap[] = "android";
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static constexpr char kKeyUp[] = "keyup";
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static constexpr char kKeyDown[] = "keydown";
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namespace flutter {
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KeyEventHandler::KeyEventHandler(flutter::BinaryMessenger* messenger)
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: channel_(
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std::make_unique<flutter::BasicMessageChannel<rapidjson::Document>>(
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messenger,
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kChannelName,
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&flutter::JsonMessageCodec::GetInstance())) {}
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KeyEventHandler::~KeyEventHandler() = default;
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void KeyEventHandler::CharHook(Win32FlutterWindow* window,
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char32_t code_point) {}
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void KeyEventHandler::KeyboardHook(Win32FlutterWindow* window,
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int key,
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int scancode,
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int action,
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int mods) {
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// TODO: Translate to a cross-platform key code system rather than passing
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// the native key code.
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rapidjson::Document event(rapidjson::kObjectType);
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auto& allocator = event.GetAllocator();
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event.AddMember(kKeyCodeKey, key, allocator);
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event.AddMember(kKeyMapKey, kAndroidKeyMap, allocator);
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switch (action) {
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case WM_KEYDOWN:
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event.AddMember(kTypeKey, kKeyDown, allocator);
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break;
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case WM_KEYUP:
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event.AddMember(kTypeKey, kKeyUp, allocator);
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break;
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default:
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std::cerr << "Unknown key event action: " << action << std::endl;
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return;
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}
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channel_->Send(event);
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}
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} // namespace flutter
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