■ Behavior<T> 클래스에서 마우스를 사용해 색상 선택 동작을 만드는 방법을 보여준다.
▶ MouseColorSelectBehavior.cs
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using System.Windows; using System.Windows.Controls; using System.Windows.Input; using System.Windows.Interactivity; using System.Windows.Media; using System.Windows.Media.Imaging; namespace TestProject { /// <summary> /// 마우스 색상 선택 동작 /// </summary> public class MouseColorSelectBehavior : Behavior<Image> { //////////////////////////////////////////////////////////////////////////////////////////////////// Dependency Property ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 선택 색상 속성 - SelectedColorProperty /// <summary> /// 선택 색상 속성 /// </summary> public static readonly DependencyProperty SelectedColorProperty = DependencyProperty.Register ( "SelectedColor", typeof(Color), typeof(MouseColorSelectBehavior), new UIPropertyMetadata(Colors.White) ); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 선택 색상 - SelectedColor /// <summary> /// 선택 색상 /// </summary> public Color SelectedColor { get { return (Color)GetValue(SelectedColorProperty); } set { SetValue(SelectedColorProperty, value); } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 부착시 처리하기 - OnAttached() /// <summary> /// 부착시 처리하기 /// </summary> protected override void OnAttached() { base.OnAttached(); AssociatedObject.MouseDown += AssociatedObject_MouseDown; AssociatedObject.MouseMove += AssociatedObject_MouseMove; } #endregion #region 탈착시 처리하기 - OnDetaching() /// <summary> /// 탈착시 처리하기 /// </summary> protected override void OnDetaching() { base.OnDetaching(); AssociatedObject.MouseDown -= AssociatedObject_MouseDown; AssociatedObject.MouseMove -= AssociatedObject_MouseMove; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 결합 객체 마우스 DOWN 처리하기 - AssociatedObject_MouseDown(sender, e) /// <summary> /// 결합 객체 마우스 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void AssociatedObject_MouseDown(object sender, MouseButtonEventArgs e) { SetSelectedColor(); } #endregion #region 결합 객체 마우스 이동시 처리하기 - AssociatedObject_MouseMove(sender, e) /// <summary> /// 결합 객체 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void AssociatedObject_MouseMove(object sender, MouseEventArgs e) { if(e.LeftButton == MouseButtonState.Pressed) { SetSelectedColor(); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 선택 색상 설정하기 - SetSelectedColor() /// <summary> /// 선택 색상 설정하기 /// </summary> private void SetSelectedColor() { Point point = Mouse.GetPosition(AssociatedObject); RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap ( (int)AssociatedObject.ActualWidth, (int)AssociatedObject.ActualHeight, 96, 96, PixelFormats.Default ); renderTargetBitmap.Render(AssociatedObject); if((point.X <= renderTargetBitmap.PixelWidth) && (point.Y <= renderTargetBitmap.PixelHeight)) { CroppedBitmap croppedBitmap = new CroppedBitmap ( renderTargetBitmap, new Int32Rect((int)point.X, (int)point.Y, 1, 1) ); byte[] pixelByteArray = new byte[4]; croppedBitmap.CopyPixels(pixelByteArray, 4, 0); SelectedColor = Color.FromArgb(255, pixelByteArray[2], pixelByteArray[1], pixelByteArray[0]); } } #endregion } } |
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:local="clr-namespace:TestProject" Width="800" Height="600" Title="Behavior<T> 클래스 : 마우스를 사용해 색상 선택 동작 사용하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid> <Grid HorizontalAlignment="Center" VerticalAlignment="Center"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <ColumnDefinition Width="10" /> <ColumnDefinition Width="Auto" /> </Grid.ColumnDefinitions> <Image Grid.Column="0" Stretch="Fill" Width="500" Height="500" Source="IMAGE\sample.png"> <i:Interaction.Behaviors> <local:MouseColorSelectBehavior x:Name="behavior" /> </i:Interaction.Behaviors> </Image> <Rectangle Grid.Column="2" Margin="10" HorizontalAlignment="Right" VerticalAlignment="Bottom" Stroke="Black" StrokeThickness="1" Width="100" Height="100"> <Rectangle.Fill> <SolidColorBrush Color="{Binding ElementName=behavior, Path=SelectedColor}" /> </Rectangle.Fill> </Rectangle> </Grid> </Grid> </Window> |
