■ UIElement 클래스의 MouseLeftButtonDown/MouseWheel/MouseMove/MouseUp 이벤트를 사용해 이동/회전/확대/축소를 처리하는 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="UIElement 클래스 : MouseLeftButtonDown/MouseWheel/MouseMove/MouseUp 이벤트를 사용해 이동/회전/확대/축소 처리하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid Margin="10"> <Canvas Background="Black"> <Image Name="image" Canvas.Left="50" Canvas.Top="50" Width="200" Height="130" Source="IMAGE/sample.jpg" /> </Canvas> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System.Windows; using System.Windows.Controls; using System.Windows.Input; using System.Windows.Media; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 첫번째 포인트 /// </summary> private Point firstPoint; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.image.MouseLeftButtonDown += image_MouseLeftButtonDown; this.image.MouseWheel += image_MouseWheel; this.image.MouseMove += image_MouseMove; this.image.MouseUp += image_MouseUp; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 이미지 마우스 왼쪽 버튼 DOWN 처리하기 - image_MouseLeftButtonDown(sender, e) /// <summary> /// 이미지 마우스 왼쪽 버튼 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { this.firstPoint = e.GetPosition(this); this.image.CaptureMouse(); } #endregion #region 이미지 마우스 WHEEL 처리하기 - image_MouseWheel(sender, e) /// <summary> /// 이미지 마우스 WHEEL 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void image_MouseWheel(object sender, MouseWheelEventArgs e) { Matrix matrix = this.image.RenderTransform.Value; Point mousePoint = e.GetPosition(this.image); if(e.RightButton == MouseButtonState.Pressed) { if(e.Delta > 0) { matrix.RotateAtPrepend(2, mousePoint.X, mousePoint.Y); } else { matrix.RotateAtPrepend(-2, mousePoint.X, mousePoint.Y); } } else { if(e.Delta > 0) { matrix.ScaleAtPrepend(1.15, 1.15, mousePoint.X, mousePoint.Y); } else { matrix.ScaleAtPrepend(1 / 1.15, 1 / 1.15, mousePoint.X, mousePoint.Y); } } MatrixTransform matrixTransform = new MatrixTransform(matrix); this.image.RenderTransform = matrixTransform; } #endregion #region 이미지 마우스 이동시 처리하기 - image_MouseMove(sender, e) /// <summary> /// 이미지 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void image_MouseMove(object sender, MouseEventArgs e) { if(e.LeftButton == MouseButtonState.Pressed) { Point mousePoint = e.GetPosition(this); Point deltaPoint = new Point(firstPoint.X - mousePoint.X, firstPoint.Y - mousePoint.Y); Canvas.SetLeft(this.image, Canvas.GetLeft(this.image) - deltaPoint.X); Canvas.SetTop (this.image, Canvas.GetTop (this.image) - deltaPoint.Y); this.firstPoint = mousePoint; } } #endregion #region 이미지 마우스 UP 처리하기 - image_MouseUp(sender, e) /// <summary> /// 이미지 마우스 UP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void image_MouseUp(object sender, MouseButtonEventArgs e) { this.image.ReleaseMouseCapture(); } #endregion } } |
