[C#/WINUI3/.NET6] RichEditBox 클래스 : 커스텀 에디터 만들기

■ RichEditBox 클래스를 사용해 커스텀 에디터를 만드는 방법을 보여준다.

▶ MainPage.xaml


<?xml version="1.0" encoding="utf-8"?>
<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Grid Margin="10">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="10"   />
            <RowDefinition Height="*"    />
            <RowDefinition Height="10"   />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <StackPanel Grid.Row="0"
            HorizontalAlignment="Left"
            Orientation="Horizontal">
            <Button Name="openFileButton"
                ToolTipService.ToolTip="Open file">
                <Button.Content>
                    <FontIcon Glyph="&#xe8e5;"/>
                </Button.Content>
            </Button>
            <Button Name="saveFileButton"
                Margin="5 0 0 0"
                ToolTipService.ToolTip="Save file">
                <Button.Content>
                    <FontIcon Glyph="&#xe74e;"/>
                </Button.Content>
            </Button>
        </StackPanel>
        <StackPanel Grid.Row="0"
            HorizontalAlignment="Right"
            Orientation="Horizontal">
            <Button Name="boldButton"
                ToolTipService.ToolTip="Bold">
                <Button.Content>
                    <FontIcon Glyph="&#xe8dd;"/>
                </Button.Content>
            </Button>
            <Button Name="italicButton"
                Margin="5 0 0 0"
                ToolTipService.ToolTip="Italic">
                <Button.Content>
                    <FontIcon Glyph="&#xe8db;"/>
                </Button.Content>
            </Button>
            <DropDownButton Name="fontColorButton"
                Margin="5 0 0 0"
                BorderThickness="0"
                ToolTipService.ToolTip="Font color"
                Background="Transparent">
                <SymbolIcon Symbol="FontColor" />
                <DropDownButton.Flyout>
                    <Flyout Placement="Bottom">
                        <VariableSizedWrapGrid
                            Orientation="Horizontal"
                            MaximumRowsOrColumns="3">
                            <VariableSizedWrapGrid.Resources>
                                <Style TargetType="Rectangle">
                                    <Setter Property="Width"  Value="32"  />
                                    <Setter Property="Height" Value="32" />
                                </Style>
                                <Style TargetType="Button">
                                    <Setter Property="Margin"    Value="5" />
                                    <Setter Property="MinWidth"  Value="0" />
                                    <Setter Property="MinHeight" Value="0" />
                                    <Setter Property="Padding"   Value="0" />
                                </Style>
                            </VariableSizedWrapGrid.Resources>
                            <Button Name="redColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Red" />
                                </Button.Content>
                            </Button>
                            <Button Name="orangeColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Orange" />
                                </Button.Content>
                            </Button>
                            <Button Name="yellowColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Yellow" />
                                </Button.Content>
                            </Button>
                            <Button Name="greenColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Green" />
                                </Button.Content>
                            </Button>
                            <Button Name="blueColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Blue" />
                                </Button.Content>
                            </Button>
                            <Button Name="indigoColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Indigo" />
                                </Button.Content>
                            </Button>
                            <Button Name="violetColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Violet" />
                                </Button.Content>
                            </Button>
                            <Button Name="grayColorButton">
                                <Button.Content>
                                    <Rectangle Fill="Gray" />
                                </Button.Content>
                            </Button>
                        </VariableSizedWrapGrid>
                    </Flyout>
                </DropDownButton.Flyout>
            </DropDownButton>
        </StackPanel>
        <RichEditBox Name="richEditBox" Grid.Row="2" />
        <StackPanel Name="findStackPanel" Grid.Row="4"
            Orientation="Horizontal">
            <TextBlock
                VerticalAlignment="Center"
                Text="Find" />
            <TextBox Name="findTextBox"
                Margin="10 0 0 0"
                Width="150"
                PlaceholderText="Enter search text"
                GotFocus="{x:Bind SetFindTextBoxHighlight}"
                TextChanged="{x:Bind SetFindTextBoxHighlight}"
                LostFocus="{x:Bind ClearFindTextBoxHighlight}" />
        </StackPanel>
    </Grid>
</Page>

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

<?xml version="1.0" encoding="utf-8"?>

<Page x:Class="TestProject.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"

FontFamily="나눔고딕코딩"

FontSize="16">

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<StackPanel Grid.Row="0"

HorizontalAlignment="Left"

Orientation="Horizontal">

<Button Name="openFileButton"

ToolTipService.ToolTip="Open file">

<Button.Content>

</Button.Content>

</Button>

<Button Name="saveFileButton"

Margin="5 0 0 0"

ToolTipService.ToolTip="Save file">

<Button.Content>

</Button.Content>

</Button>

</StackPanel>

<StackPanel Grid.Row="0"

HorizontalAlignment="Right"

Orientation="Horizontal">

<Button Name="boldButton"

ToolTipService.ToolTip="Bold">

<Button.Content>

</Button.Content>

</Button>

<Button Name="italicButton"

Margin="5 0 0 0"

ToolTipService.ToolTip="Italic">

<Button.Content>

</Button.Content>

</Button>

<DropDownButton Name="fontColorButton"

Margin="5 0 0 0"

BorderThickness="0"

ToolTipService.ToolTip="Font color"

Background="Transparent">

<DropDownButton.Flyout>

<VariableSizedWrapGrid

Orientation="Horizontal"

MaximumRowsOrColumns="3">

<VariableSizedWrapGrid.Resources>

</Style>

</Style>

</VariableSizedWrapGrid.Resources>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

<Button.Content>

</Button.Content>

</Button>

</VariableSizedWrapGrid>

</Flyout>

</DropDownButton.Flyout>

</DropDownButton>

</StackPanel>

<StackPanel Name="findStackPanel" Grid.Row="4"

Orientation="Horizontal">

<TextBlock

VerticalAlignment="Center"

Text="Find" />

<TextBox Name="findTextBox"

Margin="10 0 0 0"

Width="150"

PlaceholderText="Enter search text"

GotFocus="{x:Bind SetFindTextBoxHighlight}"

TextChanged="{x:Bind SetFindTextBoxHighlight}"

LostFocus="{x:Bind ClearFindTextBoxHighlight}" />

</StackPanel>

</Grid>

</Page>

▶ MainPage.xaml.cs


using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;

using Windows.Storage;
using Windows.Storage.Pickers;
using Windows.Storage.Provider;
using Windows.Storage.Streams;
using Windows.UI;
using Windows.UI.Popups;

using WinRT.Interop;

using Microsoft.UI;
using Microsoft.UI.Text;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Shapes;

namespace TestProject
{
    /// <summary>
    /// 메인 페이지
    /// </summary>
    public sealed partial class MainPage : Page
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Import
        ////////////////////////////////////////////////////////////////////////////////////////// Static
        //////////////////////////////////////////////////////////////////////////////// Private

        #region 활성 윈도우 구하기 - GetActiveWindow()

        /// <summary>
        /// 활성 윈도우 구하기
        /// </summary>
        /// <returns></returns>
        [DllImport("user32", ExactSpelling = true, CharSet = CharSet.Auto, PreserveSig = true, SetLastError = false)]
        private static extern IntPtr GetActiveWindow();

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// 현재 색상
        /// </summary>
        private Color currentColor = Colors.Green;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainPage()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainPage()
        {
            InitializeComponent();

            this.openFileButton.Click    += openFileButton_Click;
            this.saveFileButton.Click    += saveFileButton_Click;
            this.boldButton.Click        += boldButton_Click;
            this.italicButton.Click      += italicButton_Click;
            this.redColorButton.Click    += colorButton_Click;
            this.orangeColorButton.Click += colorButton_Click;
            this.yellowColorButton.Click += colorButton_Click;
            this.greenColorButton.Click  += colorButton_Click;
            this.blueColorButton.Click   += colorButton_Click;
            this.indigoColorButton.Click += colorButton_Click;
            this.violetColorButton.Click += colorButton_Click;
            this.grayColorButton.Click   += colorButton_Click;
            this.richEditBox.GotFocus    += richEditBox_GotFocus;
            this.richEditBox.TextChanged += richEditBox_TextChanged;

            this.richEditBox.Document.GetDefaultCharacterFormat().ForegroundColor = Colors.Green;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private
        //////////////////////////////////////////////////////////////////////////////// Event

        #region Open file 버튼 클릭시 처리하기 - openFileButton_Click(sender, e)

        /// <summary>
        /// Open file 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private async void openFileButton_Click(object sender, RoutedEventArgs e)
        {
            FileOpenPicker fileOpenPicker = new FileOpenPicker();

            fileOpenPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;

            fileOpenPicker.FileTypeFilter.Add(".rtf");

            if(Window.Current == null)
            {
                IntPtr windowHandle = GetActiveWindow();

                InitializeWithWindow.Initialize(fileOpenPicker, windowHandle);
            }

            StorageFile storageFile = await fileOpenPicker.PickSingleFileAsync();

            if(storageFile != null)
            {
                using(IRandomAccessStream stream = await storageFile.OpenAsync(FileAccessMode.Read))
                {
                    this.richEditBox.Document.LoadFromStream(TextSetOptions.FormatRtf, stream);
                }
            }
        }

        #endregion
        #region Save file 버튼 클릭시 처리하기 - saveFileButton_Click(sender, e)

        /// <summary>
        /// Save file 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private async void saveFileButton_Click(object sender, RoutedEventArgs e)
        {
            FileSavePicker fileSavePicker = new FileSavePicker
            {
                SuggestedStartLocation = PickerLocationId.DocumentsLibrary
            };

            fileSavePicker.FileTypeChoices.Add("Rich Text", new List<string>() { ".rtf" });

            fileSavePicker.SuggestedFileName = "New Document";

            if(Window.Current == null)
            {
                IntPtr windowHandle = GetActiveWindow();

                InitializeWithWindow.Initialize(fileSavePicker, windowHandle);
            }

            StorageFile storageFile = await fileSavePicker.PickSaveFileAsync();

            if(storageFile != null)
            {
                CachedFileManager.DeferUpdates(storageFile);

                using(IRandomAccessStream stream = await storageFile.OpenAsync(FileAccessMode.ReadWrite))
                {
                    this.richEditBox.Document.SaveToStream(TextGetOptions.FormatRtf, stream);
                }

                FileUpdateStatus status = await CachedFileManager.CompleteUpdatesAsync(storageFile);

                if(status != FileUpdateStatus.Complete)
                {
                    MessageDialog messageDialog = new MessageDialog("File " + storageFile.Name + " couldn't be saved.");

                    await messageDialog.ShowAsync();
                }
            }
        }

        #endregion
        #region Bold 버튼 클릭시 처리하기 - boldButton_Click(sender, e)

        /// <summary>
        /// Bold 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void boldButton_Click(object sender, RoutedEventArgs e)
        {
            this.richEditBox.Document.Selection.CharacterFormat.Bold = FormatEffect.Toggle;
        }

        #endregion
        #region Italic 버튼 클릭시 처리하기 - italicButton_Click(sender, e)

        /// <summary>
        /// Italic 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void italicButton_Click(object sender, RoutedEventArgs e)
        {
            this.richEditBox.Document.Selection.CharacterFormat.Italic = FormatEffect.Toggle;
        }

        #endregion
        #region 색상 버튼 클릭시 처리하기 - colorButton_Click(sender, e)

        /// <summary>
        /// 색상 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void colorButton_Click(object sender, RoutedEventArgs e)
        {
            Button button = sender as Button;

            Rectangle rectangle = button.Content as Rectangle;

            Color color = (rectangle.Fill as SolidColorBrush).Color;

            this.richEditBox.Document.Selection.CharacterFormat.ForegroundColor = color;

            this.fontColorButton.Flyout.Hide();

            this.richEditBox.Focus(FocusState.Keyboard);

            this.currentColor = color;
        }

        #endregion
        #region 리치 에디트 박스 포커스 획득시 처리하기 - richEditBox_GotFocus(sender, e)

        /// <summary>
        /// 리치 에디트 박스 포커스 획득시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void richEditBox_GotFocus(object sender, RoutedEventArgs e)
        {
            this.richEditBox.Document.GetText(TextGetOptions.UseCrlf, out _);

            ITextRange textRange = richEditBox.Document.GetRange(0, TextConstants.MaxUnitCount);

            SolidColorBrush backgroundBrush = App.Current.Resources["TextControlBackgroundFocused"] as SolidColorBrush;

            if(backgroundBrush != null)
            {
                textRange.CharacterFormat.BackgroundColor = backgroundBrush.Color;
            }
        }

        #endregion
        #region 리치 에디트 박스 텍스트 변경시 처리하기 - richEditBox_TextChanged(sender, e)

        /// <summary>
        /// 리치 에디트 박스 텍스트 변경시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void richEditBox_TextChanged(object sender, RoutedEventArgs e)
        {
            if(this.richEditBox.Document.Selection.CharacterFormat.ForegroundColor != this.currentColor)
            {
                this.richEditBox.Document.Selection.CharacterFormat.ForegroundColor = this.currentColor;
            }
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////// Function

        #region Find 텍스트 박스 하이라이트 설정하기 - SetFindTextBoxHighlight()

        /// <summary>
        /// Find 텍스트 박스 하이라이트 설정하기
        /// </summary>
        private void SetFindTextBoxHighlight()
        {
            ClearFindTextBoxHighlight();

            Color highlightBackgroundColor = (Color)App.Current.Resources["SystemColorHighlightColor"    ];
            Color highlightForegroundColor = (Color)App.Current.Resources["SystemColorHighlightTextColor"];

            string textToFind = this.findTextBox.Text;

            if(textToFind != null)
            {
                ITextRange textRange = this.richEditBox.Document.GetRange(0, 0);

                while(textRange.FindText(textToFind, TextConstants.MaxUnitCount, FindOptions.None) > 0)
                {
                    textRange.CharacterFormat.BackgroundColor = highlightBackgroundColor;
                    textRange.CharacterFormat.ForegroundColor = highlightForegroundColor;
                }
            }
        }

        #endregion
        #region Find 텍스트 박스 하이라이트 지우기 - ClearFindTextBoxHighlight()

        /// <summary>
        /// Find 텍스트 박스 하이라이트 지우기
        /// </summary>
        private void ClearFindTextBoxHighlight()
        {
            ITextRange textRange = this.richEditBox.Document.GetRange(0, TextConstants.MaxUnitCount);

            SolidColorBrush defaultBackgroundBrush = this.richEditBox.Background as SolidColorBrush;
            SolidColorBrush defaultForegroundBrush = this.richEditBox.Foreground as SolidColorBrush;

            textRange.CharacterFormat.BackgroundColor = defaultBackgroundBrush.Color;
            textRange.CharacterFormat.ForegroundColor = defaultForegroundBrush.Color;
        }

        #endregion
    }
}

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

using System;

using System.Collections.Generic;

using System.Runtime.InteropServices;

using Windows.Storage;

using Windows.Storage.Pickers;

using Windows.Storage.Provider;

using Windows.Storage.Streams;

using Windows.UI;

using Windows.UI.Popups;

using WinRT.Interop;

using Microsoft.UI;

using Microsoft.UI.Text;

using Microsoft.UI.Xaml;

using Microsoft.UI.Xaml.Controls;

using Microsoft.UI.Xaml.Media;

using Microsoft.UI.Xaml.Shapes;

namespace TestProject

{

/// <summary>

/// 메인 페이지

/// </summary>

public sealed partial class MainPage : Page

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Import

////////////////////////////////////////////////////////////////////////////////////////// Static

//////////////////////////////////////////////////////////////////////////////// Private

#region 활성 윈도우 구하기 - GetActiveWindow()

/// <summary>

/// 활성 윈도우 구하기

/// </summary>

/// <returns></returns>

[DllImport("user32", ExactSpelling = true, CharSet = CharSet.Auto, PreserveSig = true, SetLastError = false)]

private static extern IntPtr GetActiveWindow();

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Field

////////////////////////////////////////////////////////////////////////////////////////// Private

#region Field

/// <summary>

/// 현재 색상

/// </summary>

private Color currentColor = Colors.Green;

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainPage()

/// <summary>

/// 생성자

/// </summary>

public MainPage()

{

InitializeComponent();

this.openFileButton.Click += openFileButton_Click;

this.saveFileButton.Click += saveFileButton_Click;

this.boldButton.Click += boldButton_Click;

this.italicButton.Click += italicButton_Click;

this.redColorButton.Click += colorButton_Click;

this.orangeColorButton.Click += colorButton_Click;

this.yellowColorButton.Click += colorButton_Click;

this.greenColorButton.Click += colorButton_Click;

this.blueColorButton.Click += colorButton_Click;

this.indigoColorButton.Click += colorButton_Click;

this.violetColorButton.Click += colorButton_Click;

this.grayColorButton.Click += colorButton_Click;

this.richEditBox.GotFocus += richEditBox_GotFocus;

this.richEditBox.TextChanged += richEditBox_TextChanged;

this.richEditBox.Document.GetDefaultCharacterFormat().ForegroundColor = Colors.Green;

}

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Private

//////////////////////////////////////////////////////////////////////////////// Event

#region Open file 버튼 클릭시 처리하기 - openFileButton_Click(sender, e)

/// <summary>

/// Open file 버튼 클릭시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private async void openFileButton_Click(object sender, RoutedEventArgs e)

{

FileOpenPicker fileOpenPicker = new FileOpenPicker();

fileOpenPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;

fileOpenPicker.FileTypeFilter.Add(".rtf");

if(Window.Current == null)

{

IntPtr windowHandle = GetActiveWindow();

InitializeWithWindow.Initialize(fileOpenPicker, windowHandle);

}

StorageFile storageFile = await fileOpenPicker.PickSingleFileAsync();

if(storageFile != null)

{

using(IRandomAccessStream stream = await storageFile.OpenAsync(FileAccessMode.Read))

{

this.richEditBox.Document.LoadFromStream(TextSetOptions.FormatRtf, stream);

}

#endregion

#region Save file 버튼 클릭시 처리하기 - saveFileButton_Click(sender, e)

/// <summary>

/// Save file 버튼 클릭시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private async void saveFileButton_Click(object sender, RoutedEventArgs e)

{

FileSavePicker fileSavePicker = new FileSavePicker

{

SuggestedStartLocation = PickerLocationId.DocumentsLibrary

};

fileSavePicker.FileTypeChoices.Add("Rich Text", new List<string>() { ".rtf" });

fileSavePicker.SuggestedFileName = "New Document";

if(Window.Current == null)

{

IntPtr windowHandle = GetActiveWindow();

InitializeWithWindow.Initialize(fileSavePicker, windowHandle);

}

StorageFile storageFile = await fileSavePicker.PickSaveFileAsync();

if(storageFile != null)

{

CachedFileManager.DeferUpdates(storageFile);

using(IRandomAccessStream stream = await storageFile.OpenAsync(FileAccessMode.ReadWrite))

{

this.richEditBox.Document.SaveToStream(TextGetOptions.FormatRtf, stream);

}

FileUpdateStatus status = await CachedFileManager.CompleteUpdatesAsync(storageFile);

if(status != FileUpdateStatus.Complete)

{

MessageDialog messageDialog = new MessageDialog("File " + storageFile.Name + " couldn't be saved.");

await messageDialog.ShowAsync();

}

#endregion

#region Bold 버튼 클릭시 처리하기 - boldButton_Click(sender, e)

/// <summary>

/// Bold 버튼 클릭시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void boldButton_Click(object sender, RoutedEventArgs e)

{

this.richEditBox.Document.Selection.CharacterFormat.Bold = FormatEffect.Toggle;

}

#endregion

#region Italic 버튼 클릭시 처리하기 - italicButton_Click(sender, e)

/// <summary>

/// Italic 버튼 클릭시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void italicButton_Click(object sender, RoutedEventArgs e)

{

this.richEditBox.Document.Selection.CharacterFormat.Italic = FormatEffect.Toggle;

}

#endregion

#region 색상 버튼 클릭시 처리하기 - colorButton_Click(sender, e)

/// <summary>

/// 색상 버튼 클릭시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void colorButton_Click(object sender, RoutedEventArgs e)

{

Button button = sender as Button;

Rectangle rectangle = button.Content as Rectangle;

Color color = (rectangle.Fill as SolidColorBrush).Color;

this.richEditBox.Document.Selection.CharacterFormat.ForegroundColor = color;

this.fontColorButton.Flyout.Hide();

this.richEditBox.Focus(FocusState.Keyboard);

this.currentColor = color;

}

#endregion

#region 리치 에디트 박스 포커스 획득시 처리하기 - richEditBox_GotFocus(sender, e)

/// <summary>

/// 리치 에디트 박스 포커스 획득시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void richEditBox_GotFocus(object sender, RoutedEventArgs e)

{

this.richEditBox.Document.GetText(TextGetOptions.UseCrlf, out _);

ITextRange textRange = richEditBox.Document.GetRange(0, TextConstants.MaxUnitCount);

SolidColorBrush backgroundBrush = App.Current.Resources["TextControlBackgroundFocused"] as SolidColorBrush;

if(backgroundBrush != null)

{

textRange.CharacterFormat.BackgroundColor = backgroundBrush.Color;

}

#endregion

#region 리치 에디트 박스 텍스트 변경시 처리하기 - richEditBox_TextChanged(sender, e)

/// <summary>

/// 리치 에디트 박스 텍스트 변경시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void richEditBox_TextChanged(object sender, RoutedEventArgs e)

{

if(this.richEditBox.Document.Selection.CharacterFormat.ForegroundColor != this.currentColor)

{

this.richEditBox.Document.Selection.CharacterFormat.ForegroundColor = this.currentColor;

}

#endregion

//////////////////////////////////////////////////////////////////////////////// Function

#region Find 텍스트 박스 하이라이트 설정하기 - SetFindTextBoxHighlight()

/// <summary>

/// Find 텍스트 박스 하이라이트 설정하기

/// </summary>

private void SetFindTextBoxHighlight()

{

ClearFindTextBoxHighlight();

Color highlightBackgroundColor = (Color)App.Current.Resources["SystemColorHighlightColor" ];

Color highlightForegroundColor = (Color)App.Current.Resources["SystemColorHighlightTextColor"];

string textToFind = this.findTextBox.Text;

if(textToFind != null)

{

ITextRange textRange = this.richEditBox.Document.GetRange(0, 0);

while(textRange.FindText(textToFind, TextConstants.MaxUnitCount, FindOptions.None) > 0)

{

textRange.CharacterFormat.BackgroundColor = highlightBackgroundColor;

textRange.CharacterFormat.ForegroundColor = highlightForegroundColor;

}

#endregion

#region Find 텍스트 박스 하이라이트 지우기 - ClearFindTextBoxHighlight()

/// <summary>

/// Find 텍스트 박스 하이라이트 지우기

/// </summary>

private void ClearFindTextBoxHighlight()

{

ITextRange textRange = this.richEditBox.Document.GetRange(0, TextConstants.MaxUnitCount);

SolidColorBrush defaultBackgroundBrush = this.richEditBox.Background as SolidColorBrush;

SolidColorBrush defaultForegroundBrush = this.richEditBox.Foreground as SolidColorBrush;

textRange.CharacterFormat.BackgroundColor = defaultBackgroundBrush.Color;

textRange.CharacterFormat.ForegroundColor = defaultForegroundBrush.Color;

}

#endregion

}

TestProject.zip