■ 마우스를 사용해 엘리먼트를 이동/회전/확대/축소하는 방법을 보여준다.
▶ MousePoint.cs
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using System.Windows; namespace TestProject { /// <summary> /// 마우스 포인트 /// </summary> public struct MousePoint { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region 키 - Key /// <summary> /// 키 /// </summary> public int Key; #endregion #region 포인트 - Point /// <summary> /// 포인트 /// </summary> public Point Point; #endregion } } |
▶ MouseAdorner.cs
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using System.Collections.Generic; using System.Windows; using System.Windows.Documents; using System.Windows.Media; namespace TestProject { /// <summary> /// 마우스 어도너 /// </summary> public class MouseAdorner : Adorner { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 마우스 포인트 딕셔너리 /// </summary> private Dictionary<int, MousePoint> mousePointDictionary; /// <summary> /// 스트로크 펜 /// </summary> private Pen strokePen = new Pen(Brushes.Gray, 1); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MouseAdorner(element) /// <summary> /// 생성자 /// </summary> /// <param name="element">엘리먼트</param> public MouseAdorner(UIElement element) : base(element) { this.mousePointDictionary = new Dictionary<int, MousePoint>(); AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(element); adornerLayer.Add(this); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 객체 추가하기 - AddObject(mousePoint) /// <summary> /// 객체 추가하기 /// </summary> /// <param name="mousePoint">마우스 포인트</param> public void AddObject(MousePoint mousePoint) { this.mousePointDictionary[mousePoint.Key] = mousePoint; InvalidateVisual(); } #endregion #region 객체 제거하기 - RemoveObject(key) /// <summary> /// 객체 제거하기 /// </summary> /// <param name="key">키</param> public void RemoveObject(int key) { if(this.mousePointDictionary.ContainsKey(key)) { this.mousePointDictionary.Remove(key); InvalidateVisual(); } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 렌더링시 처리하기 - OnRender(drawingContext) /// <summary> /// 렌더링시 처리하기 /// </summary> /// <param name="drawingContext">드로잉 컨텍스트</param> protected override void OnRender(DrawingContext drawingContext) { foreach(MousePoint mousePoint in this.mousePointDictionary.Values) { if(mousePoint.Key == 0) { drawingContext.DrawEllipse ( Brushes.Tomato, this.strokePen, new Point(mousePoint.Point.X, mousePoint.Point.Y), 10.0, 10.0 ); } else { drawingContext.DrawEllipse ( Brushes.Turquoise, this.strokePen, new Point(mousePoint.Point.X, mousePoint.Point.Y), 10.0, 10.0 ); } } IsHitTestVisible = false; base.OnRender(drawingContext); } #endregion } } |
▶ Transform.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Input; using System.Windows.Media; namespace TestProject { /// <summary> /// 변환 /// </summary> public class Transform { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 마우스 어도너 /// </summary> private static MouseAdorner _mouseAdorner = null; /// <summary> /// 첫번째 마우스 포인트 /// </summary> private static MousePoint _firstMousePoint; /// <summary> /// 두번째 마우스 포인트 /// </summary> private static MousePoint _secondMousePoint; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 윈도우 /// </summary> private Window window; /// <summary> /// 엘리먼트 /// </summary> private FrameworkElement element; /// <summary> /// 변환 그룹 /// </summary> private TransformGroup transformGroup = new TransformGroup(); /// <summary> /// 회전 변환 /// </summary> private RotateTransform rotateTransform = new RotateTransform(); /// <summary> /// 스케일 변환 /// </summary> private ScaleTransform scaleTransform = new ScaleTransform(); /// <summary> /// 이동 변환 /// </summary> private TranslateTransform translateTransform = new TranslateTransform(); /// <summary> /// 드래그 여부 /// </summary> private bool isDragging = false; /// <summary> /// 스케일 여부 /// </summary> private bool isScaling = false; /// <summary> /// 회전 여부 /// </summary> private bool isRotating = false; /// <summary> /// 첫번째 길이 /// </summary> private double firstLength; /// <summary> /// 첫번째 각도 /// </summary> private double firstAngle; /// <summary> /// 역변환 첫번째 위치 /// </summary> private Point inverseFirstPoint; /// <summary> /// 첫번째 위치 /// </summary> private Point firstPoint; /// <summary> /// 변환 여부 /// </summary> private bool isTransformation = false; /// <summary> /// 이전 Z 인덱스 /// </summary> private int previousZIndex; /// <summary> /// 드래그 가능 여부 /// </summary> public bool canDrag = false; /// <summary> /// 스케일 가능 여부 /// </summary> public bool canScale = false; /// <summary> /// 회전 가능 여부 /// </summary> public bool canRotate = false; /// <summary> /// 위치 표시 여부 /// </summary> public bool showPosition = false; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - Transform(window, element) /// <summary> /// 생성자 /// </summary> /// <param name="window">윈도우</param> /// <param name="element">엘리먼트</param> public Transform(Window window, FrameworkElement element) { this.window = window; this.element = element; this.element.PreviewMouseDown += element_PreviewMouseDown; this.element.PreviewMouseUp += element_PreviewMouseUp; this.element.MouseLeave += element_MouseLeave; this.transformGroup.Children.Add(this.rotateTransform ); this.transformGroup.Children.Add(this.scaleTransform ); this.transformGroup.Children.Add(this.translateTransform); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 엘리먼트 PREVIEW 마우스 DOWN 처리하기 - element_PreviewMouseDown(sender, e) /// <summary> /// 엘리먼트 PREVIEW 마우스 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void element_PreviewMouseDown(object sender, MouseButtonEventArgs e) { if(e.LeftButton == MouseButtonState.Pressed && e.RightButton == MouseButtonState.Pressed && (this.canScale || this.canRotate)) { this.isTransformation = !this.isTransformation; this.window.PreviewMouseMove -= window_DragPreviewMouseMove; if(this.isTransformation) { this.firstPoint = e.GetPosition(this.window); this.window.PreviewMouseMove += window_TransformPreviewMouseMove; } } else { if(this.canDrag && e.LeftButton == MouseButtonState.Pressed || e.RightButton == MouseButtonState.Pressed) { if(!this.isTransformation) { this.firstPoint = e.GetPosition(this.window); this.window.PreviewMouseMove += window_DragPreviewMouseMove; this.previousZIndex = Canvas.GetZIndex(this.element); Canvas.SetZIndex(this.element, 20); } } } if(this.showPosition) { if(!this.isTransformation) { ChangePosition(_firstMousePoint, e.GetPosition(this.window)); } } } #endregion #region 엘리먼트 PREVIEW 마우스 UP 처리하기 - element_PreviewMouseUp(sender, e) /// <summary> /// 엘리먼트 PREVIEW 마우스 UP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void element_PreviewMouseUp(object sender, MouseButtonEventArgs e) { if(e.LeftButton == MouseButtonState.Released && e.RightButton == MouseButtonState.Released) { if(!this.isTransformation) { Canvas.SetZIndex(this.element, this.previousZIndex); } if(this.canDrag) { this.window.PreviewMouseMove -= window_DragPreviewMouseMove; this.isDragging = false; } if (this.canScale || this.canRotate) { if(!this.isTransformation) { this.window.PreviewMouseMove -= window_TransformPreviewMouseMove; } this.isRotating = this.isScaling = false; } if(this.showPosition) { if(!this.isTransformation) { _mouseAdorner.RemoveObject(_firstMousePoint.Key ); _mouseAdorner.RemoveObject(_secondMousePoint.Key); } else { _mouseAdorner.RemoveObject(_secondMousePoint.Key); } } } } #endregion #region 엘리먼트 마우스 이탈시 처리하기 - element_MouseLeave(sender, e) /// <summary> /// 엘리먼트 마우스 이탈시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void element_MouseLeave(object sender, MouseEventArgs e) { if(e.LeftButton == MouseButtonState.Released && e.RightButton == MouseButtonState.Released) { this.window.PreviewMouseMove -= window_DragPreviewMouseMove; this.window.PreviewMouseMove -= window_TransformPreviewMouseMove; Canvas.SetZIndex(this.element, this.previousZIndex); this.isTransformation = this.isDragging = this.isRotating = this.isScaling = false; if(this.showPosition) { if (_mouseAdorner != null) { _mouseAdorner.RemoveObject(_firstMousePoint.Key ); _mouseAdorner.RemoveObject(_secondMousePoint.Key); } } } } #endregion #region 윈도우 드래그 PREVIEW 마우스 이동시 처리하기 - window_DragPreviewMouseMove(sender, e) /// <summary> /// 윈도우 드래그 PREVIEW 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void window_DragPreviewMouseMove(object sender, MouseEventArgs e) { if(e.LeftButton == MouseButtonState.Pressed || e.RightButton == MouseButtonState.Pressed) { Point currentPoint = e.GetPosition(this.window); if(this.showPosition) { ChangePosition(_firstMousePoint, currentPoint); } Drag(currentPoint); } } #endregion #region 윈도우 변환 PREVIEW 마우스 이동시 처리하기 - window_TransformPreviewMouseMove(sender, e) /// <summary> /// 윈도우 변환 PREVIEW 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void window_TransformPreviewMouseMove(object sender, MouseEventArgs e) { if(e.LeftButton == MouseButtonState.Pressed || e.RightButton == MouseButtonState.Pressed) { Point currentPoint = e.GetPosition(this.window); Point distanceVector = new Point((currentPoint.X - this.firstPoint.X), (this.firstPoint.Y - currentPoint.Y)); double currentLength = Math.Sqrt(distanceVector.X * distanceVector.X + distanceVector.Y * distanceVector.Y); double currentAngle = Math.Atan2(distanceVector.Y, distanceVector.X) * 180 / Math.PI; if(this.showPosition) { ChangePosition(_secondMousePoint, currentPoint); } if(this.canScale) { if(!this.isScaling) { this.firstLength = currentLength / this.scaleTransform.ScaleX; this.isScaling = true; } if(this.firstLength > 0) { double scale = currentLength / this.firstLength; this.scaleTransform.ScaleX = scale; this.scaleTransform.ScaleY = scale; } } if(this.canRotate) { if(!this.isRotating) { this.firstAngle = currentAngle + this.rotateTransform.Angle; this.isRotating = true; } double finalAngle = (this.firstAngle - currentAngle + 360) % 360; this.rotateTransform.Angle = finalAngle; } Drag(this.firstPoint); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 드래그하기 - Drag(point) /// <summary> /// 드래그하기 /// </summary> /// <param name="point">포인트</param> private void Drag(Point point) { if(!this.isDragging) { this.inverseFirstPoint = this.element.TransformToVisual(this.window).Inverse.Transform(this.firstPoint); this.isDragging = true; } Point translatePoint = this.element.TranslatePoint(this.inverseFirstPoint, this.window); Point differencePoint = new Point(point.X - translatePoint.X, point.Y - translatePoint.Y); this.translateTransform.X += differencePoint.X; this.translateTransform.Y += differencePoint.Y; this.element.RenderTransform = this.transformGroup; } #endregion #region 위치 변경하기 - ChangePosition(mousePoint, point) /// <summary> /// 위치 변경하기 /// </summary> /// <param name="mousePoint">마우스 포인트</param> /// <param name="point">포인트</param> private void ChangePosition(MousePoint mousePoint, Point point) { if(_mouseAdorner == null) { _mouseAdorner = new MouseAdorner((UIElement)this.window.Content); _firstMousePoint.Key = 0; _secondMousePoint.Key = 1; } mousePoint.Point = point; _mouseAdorner.AddObject(mousePoint); } #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" Width="800" Height="600" Title="마우스를 사용해 엘리먼트 이동/회전/확대/축소하기" FontFamily="나눔고딕코딩" FontSize="16"> <Canvas Background="DarkGray"> <Grid Name="grid" Canvas.Left="20" Canvas.Top="20" Height="150" Width="150" Background="Black" /> <Image Name="image1" Canvas.Left="180" Canvas.Top="170" Width="300" Height="200" Stretch="Fill" Source="IMAGE/sample1.png" /> <Button Name="button" Canvas.Left="390" Canvas.Top="60" Height="100" Width="100"> <Button.Background> <LinearGradientBrush StartPoint="0.5 0" EndPoint="0.5 1"> <GradientStop Offset="0" Color="#ffffffff" /> <GradientStop Offset="0.9" Color="#ff68e5db" /> </LinearGradientBrush> </Button.Background> </Button> <Border Name="border" Canvas.Left="500" Canvas.Top="60" Width="200" BorderThickness="2 2 2 2" BorderBrush="#ffffee00"> <Image Name="image2" Width="Auto" Height="Auto" Stretch="Fill" Source="IMAGE/sample2.png" /> </Border> </Canvas> </Window> |
▶ MainWindow.xaml.cs
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using System.Windows; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 변환 /// </summary> private Transform transform; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); Loaded += Window_Loaded; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #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) { this.transform = new Transform(this, this.button); this.transform.canDrag = true; this.transform.canScale = true; this.transform.canRotate = true; this.transform.showPosition = true; this.transform = new Transform(this, this.border); this.transform.canDrag = true; this.transform.canScale = true; this.transform.canRotate = true; this.transform.showPosition = true; this.transform = new Transform(this, this.image1); this.transform.canDrag = true; this.transform.canScale = true; this.transform.canRotate = true; this.transform.showPosition = true; this.transform = new Transform(this, this.grid); this.transform.canDrag = true; this.transform.canScale = true; this.transform.canRotate = true; this.transform.showPosition = true; } #endregion } } |
