■ Visual 클래스의 PointToScreen 메소드를 사용해 부모 엘리먼트 기준 자식 엘리먼트의 상대적 위치를 구하는 방법을 보여준다.
▶ 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" Width="800" Height="600" Title="Visual 클래스 : PointToScreen 메소드를 사용해 부모 엘리먼트 기준 자식 엘리먼트의 상대적 위치 구하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid Background="Green"> <Canvas Name="canvas" Width="200" Height="200" Background="Blue"> <Rectangle Name="rectangle" Canvas.Left="10" Canvas.Top="10" Width="50" Height="50" Fill="Yellow" /> </Canvas> <TextBlock Name="textBlock" Margin="10" HorizontalAlignment="Center" VerticalAlignment="Bottom" /> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Media; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); Loaded += Window_Loaded; LocationChanged += Window_LocationChanged; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 윈도우 로드시 처리하기 - Window_Loaded(sender, e) /// <summary> /// 윈도우 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_Loaded(object sender, RoutedEventArgs e) { DisplayPoint(); } #endregion #region 윈도우 위치 변경시 처리하기 - Window_LocationChanged(sender, e) /// <summary> /// 윈도우 위치 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_LocationChanged(object sender, EventArgs e) { DisplayPoint(); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 상대적 위치 구하기 - GetRelativePoint(parent, child) /// <summary> /// 상대적 위치 구하기 /// </summary> /// <param name="parent">부모</param> /// <param name="child">자식</param> /// <returns>상대적 위치</returns> private Point GetRelativePoint(Visual parent, Visual child) { Point originPoint = new Point(0, 0); Point childPoint = child.PointToScreen (originPoint); Point parentPoint = parent.PointToScreen(originPoint); return new Point(childPoint.X - parentPoint.X, childPoint.Y - parentPoint.Y); } #endregion #region 포인트 표시하기 - DisplayPoint() /// <summary> /// 포인트 표시하기 /// </summary> private void DisplayPoint() { Point point = GetRelativePoint(this.canvas, this.rectangle); this.textBlock.Text = point.ToString(); } #endregion } } |
