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109 lines
3.8 KiB
C++
109 lines
3.8 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 <array>
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#include <map>
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#include <memory>
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#include "flutter/shell/platform/common/client_wrapper/include/flutter/binary_messenger.h"
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#include "flutter/shell/platform/common/client_wrapper/include/flutter/method_channel.h"
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#include "flutter/shell/platform/common/geometry.h"
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#include "flutter/shell/platform/common/json_method_codec.h"
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#include "flutter/shell/platform/common/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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#include "flutter/shell/platform/windows/text_input_plugin_delegate.h"
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namespace flutter {
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class FlutterWindowsView;
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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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TextInputPluginDelegate* delegate);
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virtual ~TextInputPlugin();
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// |KeyboardHookHandler|
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bool KeyboardHook(FlutterWindowsView* view,
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int key,
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int scancode,
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int action,
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char32_t character,
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bool extended) override;
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// |KeyboardHookHandler|
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void TextHook(FlutterWindowsView* view, const std::u16string& text) override;
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// |KeyboardHookHandler|
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void ComposeBeginHook() override;
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// |KeyboardHookHandler|
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void ComposeEndHook() override;
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// |KeyboardHookHandler|
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void ComposeChangeHook(const std::u16string& text, int cursor_pos) 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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// Returns the composing rect, or if IME composing mode is not active, the
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// cursor rect in the PipelineOwner root coordinate system.
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Rect GetCursorRect() const;
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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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// The associated |TextInputPluginDelegate|.
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TextInputPluginDelegate* delegate_;
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// The active client id.
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int client_id_;
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// The active model. nullptr if not set.
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std::unique_ptr<TextInputModel> active_model_;
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// Keyboard type of the client. See available options:
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// https://api.flutter.dev/flutter/services/TextInputType-class.html
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std::string input_type_;
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// An action requested by the user on the input client. See available options:
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// https://api.flutter.dev/flutter/services/TextInputAction-class.html
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std::string input_action_;
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// The smallest rect, in local coordinates, of the text in the composing
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// range, or of the caret in the case where there is no current composing
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// range. This value is updated via `TextInput.setMarkedTextRect` messages
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// over the text input channel.
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Rect composing_rect_;
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// A 4x4 matrix that maps from `EditableText` local coordinates to the
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// coordinate system of `PipelineOwner.rootNode`.
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std::array<std::array<double, 4>, 4> editabletext_transform_ = {
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0.0, 0.0, 0.0, 0.0, //
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0.0, 0.0, 0.0, 0.0, //
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0.0, 0.0, 0.0, 0.0, //
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0.0, 0.0, 0.0, 0.0};
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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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