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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.
65 lines
2.2 KiB
C++
65 lines
2.2 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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#ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_TEXT_INPUT_PLUGIN_H_
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#define FLUTTER_SHELL_PLATFORM_WINDOWS_TEXT_INPUT_PLUGIN_H_
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#include <map>
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#include <memory>
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#include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/binary_messenger.h"
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#include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/method_channel.h"
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#include "flutter/shell/platform/common/cpp/text_input_model.h"
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#include "flutter/shell/platform/windows/keyboard_hook_handler.h"
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#include "flutter/shell/platform/windows/public/flutter_windows.h"
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namespace flutter {
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class Win32FlutterWindow;
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// Implements a text input plugin.
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//
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// Specifically handles window events within windows.
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class TextInputPlugin : public KeyboardHookHandler {
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public:
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explicit TextInputPlugin(flutter::BinaryMessenger* messenger);
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virtual ~TextInputPlugin();
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// |KeyboardHookHandler|
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void 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) override;
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// |KeyboardHookHandler|
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void CharHook(Win32FlutterWindow* window, char32_t code_point) override;
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private:
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// Sends the current state of the given model to the Flutter engine.
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void SendStateUpdate(const TextInputModel& model);
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// Sends an action triggered by the Enter key to the Flutter engine.
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void EnterPressed(TextInputModel* model);
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// Called when a method is called on |channel_|;
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void HandleMethodCall(
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const flutter::MethodCall<rapidjson::Document>& method_call,
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std::unique_ptr<flutter::MethodResult<rapidjson::Document>> result);
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// The MethodChannel used for communication with the Flutter engine.
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std::unique_ptr<flutter::MethodChannel<rapidjson::Document>> channel_;
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// Mapping of client IDs to text input models.
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std::map<int, std::unique_ptr<TextInputModel>> input_models_;
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// The active model. nullptr if not set.
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TextInputModel* active_model_;
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};
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} // namespace flutter
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#endif // FLUTTER_SHELL_PLATFORM_WINDOWS_TEXT_INPUT_PLUGIN_H_
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