using System.Linq; using System.Windows; using System.Windows.Input; using System.Windows.Media; namespace ImageZoomPanning { /// <summary> /// MainWindow.xaml에 대한 상호 작용 논리 /// </summary> public partial class MainWindow : Window { /// <summary> /// 원본 포인트입니다. /// </summary> private Point origin; /// <summary> /// 시작 포인트입니다. /// </summary> private Point start; /// <summary> /// 생성자입니다. /// </summary> public MainWindow() { InitializeComponent(); TransformGroup transformGroup = new TransformGroup(); ScaleTransform scaleTransform = new ScaleTransform(); transformGroup.Children.Add(scaleTransform); TranslateTransform translateTransform = new TranslateTransform(); transformGroup.Children.Add(translateTransform); image.RenderTransform = transformGroup; image.MouseWheel += image_MouseWheel; image.MouseLeftButtonDown += image_MouseLeftButtonDown; image.MouseLeftButtonUp += image_MouseLeftButtonUp; image.MouseMove += image_MouseMove; } /// <summary> /// 마우스 휠 움직임에 따라 Zoon In/Out 합니다. /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void image_MouseWheel(object sender, MouseWheelEventArgs e) { var transform = (ScaleTransform)((TransformGroup)image.RenderTransform).Children.First(c => c is ScaleTransform); double zoom = e.Delta > 0 ? .2 : -.2; transform.ScaleX += zoom; transform.ScaleY += zoom; } /// <summary> /// 좌클릭에 따라 패닝을 시작합니다. /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { image.CaptureMouse(); var translateTransform = (TranslateTransform)((TransformGroup)image.RenderTransform).Children.First(c => c is TranslateTransform); start = e.GetPosition(border); origin = new Point(translateTransform.X, translateTransform.Y); } /// <summary> /// 마우스 우버튼 놓을때 패닝되던 이미지가 멈춥니다 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void image_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) { image.ReleaseMouseCapture(); } /// <summary> /// 마우스 움직임에 따라 이미지가 패닝됩니다. /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void image_MouseMove(object sender, MouseEventArgs e) { if (!image.IsMouseCaptured) return; var translateTransform = (TranslateTransform)((TransformGroup)image.RenderTransform).Children.First(c => c is TranslateTransform); Vector v = start - e.GetPosition(border); translateTransform.X = origin.X - v.X; translateTransform.Y = origin.Y - v.Y; } } } | 
