以下の組み合わせ全てで再現しました。
MS-IME+Win7 x86/x64 , MS-IME+Win8.1 x64 , MS-IME+Win10 x64
ATOK2017(体験版)+Win10 x64
変換中の状態で、入力行の行頭にカーソルが移動できないんですかね
とりあえず改行コードにゼロ幅スペースをくっつけて、行頭にも移動するように見せかけてみる。(言語不明なのでC#)
<Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:app="clr-namespace:WpfApplication1"
Title="MainWindow" Height="350" Width="525">
<StackPanel>
<TextBlock Text="未対策"/>
<TextBox x:Name="textBox1" Height="100" AcceptsReturn="true" Margin="5"
app:TextBoxTool.AppendZeroWidthReturn="false"/>
<TextBlock Text="ゼロ幅スペース付き"/>
<TextBox x:Name="textBox2" Height="100" AcceptsReturn="true" Margin="5"
app:TextBoxTool.AppendZeroWidthReturn="true"/>
</StackPanel>
</Window>
using System;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
namespace WpfApplication1
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
class TextBoxTool
{
#region 添付プロパティ
public static bool GetAppendZeroWidthReturn(DependencyObject obj)
{
return (bool)obj.GetValue(AppendZeroWidthReturnProperty);
}
public static void SetAppendZeroWidthReturn(DependencyObject obj, bool value)
{
obj.SetValue(AppendZeroWidthReturnProperty, value);
}
/// <summary>改行コードにゼロ幅を付加するか指定する</summary>
public static readonly DependencyProperty AppendZeroWidthReturnProperty
= DependencyProperty.RegisterAttached
("AppendZeroWidthReturn"
, typeof(bool)
, typeof(TextBoxTool)
, new UIPropertyMetadata(default(bool), new PropertyChangedCallback(OnAppendZeroWidthReturnPropertyChanged)));
private static void OnAppendZeroWidthReturnPropertyChanged(DependencyObject dpo, DependencyPropertyChangedEventArgs e)
{
TextBox target = dpo as TextBox;
if (target != null)
{
bool newValue = (bool)e.NewValue;
bool oldValue = (bool)e.OldValue;
if (oldValue)
{
target.PreviewKeyDown -= TextBox_PreviewKeyDown;
target.CommandBindings.Remove(cbPaste);
target.CommandBindings.Remove(cbCopy);
TextCompositionManager.RemoveTextInputStartHandler(target, TextBox_TextInputStart);
TextCompositionManager.RemovePreviewTextInputHandler(target, TextBox_PreviewTextInput);
}
if (newValue)
{
target.PreviewKeyDown += TextBox_PreviewKeyDown;
target.CommandBindings.Add(cbPaste);
target.CommandBindings.Add(cbCopy);
TextCompositionManager.AddTextInputStartHandler(target, TextBox_TextInputStart);
TextCompositionManager.AddPreviewTextInputHandler(target, TextBox_PreviewTextInput);
}
}
}
static void TextBox_TextInputStart(object sender, TextCompositionEventArgs e)
{
var txb = (TextBox)sender;
SetComposition(txb, e.TextComposition);
System.Diagnostics.Debug.WriteLine(GetComposition(txb));
}
static void TextBox_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
var txb = (TextBox)sender;
SetComposition(txb, null);
System.Diagnostics.Debug.WriteLine(GetComposition(txb));
}
#endregion
private static TextComposition GetComposition(DependencyObject obj)
{
return (TextComposition)obj.GetValue(CompositionProperty);
}
private static void SetComposition(DependencyObject obj, TextComposition value)
{
obj.SetValue(CompositionProperty, value);
}
private static readonly DependencyProperty CompositionProperty
= DependencyProperty.RegisterAttached("Composition", typeof(TextComposition), typeof(TextBoxTool), new UIPropertyMetadata(default(TextComposition)));
///// <summary>ゼロ幅スペース</summary>
//#if DEBUG
// public const char ZEROWIDTH = '#';
//#else
public const char ZEROWIDTH = (char)0x200B;
//#endif
/// <summary>通常の改行コードの後ろにゼロ幅スペース(2行目以降の行頭にゼロ幅スペースを埋め込む)</summary>
public static readonly string NewLineZero = System.Environment.NewLine + ZEROWIDTH;
public static readonly int NewLineZeroLength = NewLineZero.Length;
private static System.Reflection.PropertyInfo piTextSelectionInternal;
private static System.Reflection.PropertyInfo piAnchorPosition;
static TextBoxTool()
{
piTextSelectionInternal = typeof(TextBox).GetProperty("TextSelectionInternal", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.FlattenHierarchy);
piAnchorPosition = typeof(System.Windows.Documents.TextSelection).GetProperty("AnchorPosition", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);
}
/// <summary>範囲選択のアンカー位置を取得</summary>
public static TextPointer GetAnchorPointer(TextBox txb)
{
if (piTextSelectionInternal != null && piAnchorPosition != null)
{
var sel = piTextSelectionInternal.GetValue(txb) as System.Windows.Documents.TextSelection;
if (sel != null)
{
var anchor = piAnchorPosition.GetValue(sel) as System.Windows.Documents.TextPointer;
return anchor;
}
}
return null;
}
/// <summary>ペーストコマンド</summary>
private static CommandBinding cbPaste = new System.Windows.Input.CommandBinding(ApplicationCommands.Paste, (s, e) =>
{
var t = (TextBox)s;
ExpandNewline(t);
var text = Clipboard.GetText().Replace(System.Environment.NewLine, NewLineZero);
t.SelectedText = text;
e.Handled = true;
});
/// <summary>コピーコマンド</summary>
private static CommandBinding cbCopy = new System.Windows.Input.CommandBinding(ApplicationCommands.Copy, (s, e) =>
{
var t = (TextBox)s;
var text = t.SelectedText.Replace(ZEROWIDTH.ToString(), string.Empty);
Clipboard.SetText(text);
e.Handled = true;
});
/// <summary>改行コードの選択をゼロ幅スペースまで広げる</summary>
/// <param name="t"></param>
private static void ExpandNewline(TextBox t)
{
if (t.SelectedText.Length > 0 && t.SelectedText[0] == ZEROWIDTH)
{
t.SelectionStart++;
t.SelectionLength--;
}
if (t.SelectedText.EndsWith(System.Environment.NewLine))
{
var x = GetTailNext(t);
if (x.Length > 0 && x[0] == ZEROWIDTH)
{
t.SelectionLength++;
}
}
}
/// <summary>選択範囲の次の文字</summary>
private static string GetTailNext(TextBox txb)
{
int p = txb.SelectionStart + txb.SelectionLength;
int len = Math.Max(0, Math.Min(System.Environment.NewLine.Length + 1, txb.Text.Length - p));
return txb.Text.Substring(p, len);
}
private static void TextBox_PreviewKeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
var txb = (TextBox)sender;
if (!txb.AcceptsReturn)
{
return;
}
switch (e.Key)
{
case System.Windows.Input.Key.Return:
{
ExpandNewline(txb);
var comp = GetComposition(txb);
if (Keyboard.Modifiers == ModifierKeys.Shift && comp != null && InputMethod.GetIsInputMethodEnabled(txb))
{
//IME入力途中でShit+Enter
InputMethod.SetIsInputMethodEnabled(txb, false);
InputMethod.SetIsInputMethodEnabled(txb, true);
}
int p = txb.SelectionStart;
txb.SelectedText = NewLineZero;
txb.Select(p + NewLineZeroLength, 0);
e.Handled = true;
}
break;
case System.Windows.Input.Key.Back:
{
ExpandNewline(txb);
if (txb.SelectionStart < NewLineZeroLength)
{
return;
}
if (txb.Text.Substring(txb.SelectionStart - NewLineZeroLength, NewLineZeroLength) == NewLineZero)
{
int p = txb.SelectionStart;
if (p == txb.Text.Length)
{
txb.Text = txb.Text.Substring(0, p - NewLineZeroLength);
}
else
{
txb.Text = txb.Text.Substring(0, p - NewLineZeroLength) + txb.Text.Substring(p);
}
txb.Select(p - NewLineZeroLength, 0);
e.Handled = true;
}
}
break;
case System.Windows.Input.Key.Delete:
{
if (txb.SelectionLength > 0)
{
ExpandNewline(txb);
}
else
{
string tail = GetTailNext(txb);
if (tail.StartsWith(System.Environment.NewLine))
{
txb.SelectionLength = System.Environment.NewLine.Length;
tail = GetTailNext(txb);
if (tail.Length > 0 && tail[0] == ZEROWIDTH)
{
txb.SelectionLength++;
}
}
}
}
break;
case Key.Left:
{
if (txb.SelectionStart > 0 && txb.SelectionLength > 0)
{
var pAnchor = GetAnchorPointer(txb);
if (pAnchor != null)
{
var pCaret = pAnchor.DocumentStart.GetPositionAtOffset(txb.CaretIndex);
if (pCaret.CompareTo(pAnchor) < 0)
{
var list = System.Environment.NewLine.Skip(1).ToList();
list.Add(ZEROWIDTH);
//行頭に向かって範囲拡張の場合
do
{
EditingCommands.SelectLeftByCharacter.Execute(null, txb);
} while (txb.SelectionStart > 0 && list.Contains(txb.SelectedText[0]));
e.Handled = true;
}
}
}
}
break;
default:
ExpandNewline(txb);
break;
}
}
}
}
個別に明示されていない限りgekkaがフォーラムに投稿したコードにはフォーラム使用条件に基づき「MICROSOFT LIMITED PUBLIC LICENSE」が適用されます。(かなり自由に使ってOK!)
