■ 움직이는 랩 패널(Wrap Panel)을 사용하는 방법을 보여준다.
▶ AnimatedWrapPanel.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Controls.Primitives; using System.Windows.Media; using System.Windows.Media.Animation; namespace TestProject { /// <summary> /// 움직이는 랩 패널 /// </summary> public class AnimatedWrapPanel : Panel, IScrollInfo { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 무한 크기 /// </summary> private static Size _infiniteSize = new Size(double.PositiveInfinity, double.PositiveInfinity); #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 라인 크기 /// </summary> private const double LINE_SIZE = 16; /// <summary> /// 휠 크기 /// </summary> private const double WHEEL_SIZE = 3 * LINE_SIZE; /// <summary> /// 수평 스크롤 가능 여부 /// </summary> private bool canHorizontallyScroll; /// <summary> /// 수직 스크롤 가능 여부 /// </summary> private bool canVerticallyScroll; /// <summary> /// 스크롤 소유자 /// </summary> private ScrollViewer scrollOwner; /// <summary> /// 오프셋 벡터 /// </summary> private Vector offsetVector; /// <summary> /// 범위 크기 /// </summary> private Size extentSize; /// <summary> /// 뷰포트 크기 /// </summary> private Size viewportSize; /// <summary> /// 애니메이션 시간 범위 /// </summary> private TimeSpan animationTimeSpan = TimeSpan.FromMilliseconds(200); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 스크롤 소유자 - ScrollOwner /// <summary> /// 스크롤 소유자 /// </summary> public ScrollViewer ScrollOwner { get { return this.scrollOwner; } set { this.scrollOwner = value; } } #endregion #region 수평 스크롤 가능 여부 - CanHorizontallyScroll /// <summary> /// 수평 스크롤 가능 여부 /// </summary> public bool CanHorizontallyScroll { get { return this.canHorizontallyScroll; } set { this.canHorizontallyScroll = value; } } #endregion #region 수직 스크롤 가능 여부 - CanVerticallyScroll /// <summary> /// 수직 스크롤 가능 여부 /// </summary> public bool CanVerticallyScroll { get { return this.canVerticallyScroll; } set { this.canVerticallyScroll = value; } } #endregion #region 범위 너비 - ExtentWidth /// <summary> /// 범위 너비 /// </summary> public double ExtentWidth { get { return this.extentSize.Width; } } #endregion #region 범위 높이 - ExtentHeight /// <summary> /// 범위 높이 /// </summary> public double ExtentHeight { get { return this.extentSize.Height; } } #endregion #region 수평 오프셋 - HorizontalOffset /// <summary> /// 수평 오프셋 /// </summary> public double HorizontalOffset { get { return this.offsetVector.X; } } #endregion #region 수직 오프셋 - VerticalOffset /// <summary> /// 수직 오프셋 /// </summary> public double VerticalOffset { get { return this.offsetVector.Y; } } #endregion #region 뷰포트 너비 - ViewportWidth /// <summary> /// 뷰포트 너비 /// </summary> public double ViewportWidth { get { return this.viewportSize.Width; } } #endregion #region 뷰포트 높이 - ViewportHeight /// <summary> /// 뷰포트 높이 /// </summary> public double ViewportHeight { get { return this.viewportSize.Height; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 한 줄 왼쪽으로 이동하기 - LineLeft() /// <summary> /// 한 줄 왼쪽으로 이동하기 /// </summary> public void LineLeft() { SetHorizontalOffset(HorizontalOffset - LINE_SIZE); } #endregion #region 한 줄 위로 이동하기 - LineUp() /// <summary> /// 한 줄 위로 이동하기 /// </summary> public void LineUp() { SetVerticalOffset(VerticalOffset - LINE_SIZE); } #endregion #region 한 줄 오른쪽으로 이동하기 - LineRight() /// <summary> /// 한 줄 오른쪽으로 이동하기 /// </summary> public void LineRight() { SetHorizontalOffset(HorizontalOffset + LINE_SIZE); } #endregion #region 한 줄 아래로 이동하기 - LineDown() /// <summary> /// 한 줄 아래로 이동하기 /// </summary> public void LineDown() { SetVerticalOffset(VerticalOffset + LINE_SIZE); } #endregion #region 마우스 휠 왼쪽으로 이동하기 - MouseWheelLeft() /// <summary> /// 마우스 휠 왼쪽으로 이동하기 /// </summary> public void MouseWheelLeft() { SetHorizontalOffset(HorizontalOffset - WHEEL_SIZE); } #endregion #region 마우스 휠 위로 이동하기 - MouseWheelUp() /// <summary> /// 마우스 휠 위로 이동하기 /// </summary> public void MouseWheelUp() { SetVerticalOffset(VerticalOffset - WHEEL_SIZE); } #endregion #region 마우스 휠 오른쪽으로 이동하기 - MouseWheelRight() /// <summary> /// 마우스 휠 오른쪽으로 이동하기 /// </summary> public void MouseWheelRight() { SetHorizontalOffset(HorizontalOffset + WHEEL_SIZE); } #endregion #region 마우스 휠 아래로 이동하기 - MouseWheelDown() /// <summary> /// 마우스 휠 아래로 이동하기 /// </summary> public void MouseWheelDown() { SetVerticalOffset(VerticalOffset + WHEEL_SIZE); } #endregion #region 페이지 왼쪽으로 이동하기 - PageLeft() /// <summary> /// 페이지 왼쪽으로 이동하기 /// </summary> public void PageLeft() { SetHorizontalOffset(HorizontalOffset - ViewportWidth); } #endregion #region 페이지 위로 이동하기 - PageUp() /// <summary> /// 페이지 위로 이동하기 /// </summary> public void PageUp() { SetVerticalOffset(VerticalOffset - ViewportHeight); } #endregion #region 페이지 오른쪽으로 이동하기 - PageRight() /// <summary> /// 페이지 오른쪽으로 이동하기 /// </summary> public void PageRight() { SetHorizontalOffset(HorizontalOffset + ViewportWidth); } #endregion #region 페이지 아래로 이동하기 - PageDown() /// <summary> /// 페이지 아래로 이동하기 /// </summary> public void PageDown() { SetVerticalOffset(VerticalOffset + ViewportHeight); } #endregion #region 표시하기 - MakeVisible(visual, rectangle) /// <summary> /// 표시하기 /// </summary> /// <param name="visual">비주얼 객체</param> /// <param name="rectangle">사각형</param> /// <returns>사각형</returns> public Rect MakeVisible(Visual visual, Rect rectangle) { if(rectangle.IsEmpty || visual == null || visual == this || !base.IsAncestorOf(visual)) { return Rect.Empty; } rectangle = visual.TransformToAncestor(this).TransformBounds(rectangle); Rect viewRect = new Rect(HorizontalOffset, VerticalOffset, ViewportWidth, ViewportHeight); rectangle.X += viewRect.X; rectangle.Y += viewRect.Y; viewRect.X = CalculateNewScrollOffset(viewRect.Left, viewRect.Right , rectangle.Left, rectangle.Right ); viewRect.Y = CalculateNewScrollOffset(viewRect.Top , viewRect.Bottom, rectangle.Top , rectangle.Bottom); SetHorizontalOffset(viewRect.X); SetVerticalOffset(viewRect.Y); rectangle.Intersect(viewRect); rectangle.X -= viewRect.X; rectangle.Y -= viewRect.Y; return rectangle; } #endregion #region 수평 오프셋 설정하기 - SetHorizontalOffset(offset) /// <summary> /// 수평 오프셋 설정하기 /// </summary> /// <param name="offset">오프셋</param> public void SetHorizontalOffset(double offset) { offset = Math.Max(0, Math.Min(offset, ExtentWidth - ViewportWidth)); if(offset != this.offsetVector.Y) { this.offsetVector.X = offset; InvalidateArrange(); } } #endregion #region 수직 오프셋 설정하기 - SetVerticalOffset(offset) /// <summary> /// 수직 오프셋 설정하기 /// </summary> /// <param name="offset">오프셋</param> public void SetVerticalOffset(double offset) { offset = Math.Max(0, Math.Min(offset, ExtentHeight - ViewportHeight)); if(offset != this.offsetVector.Y) { this.offsetVector.Y = offset; InvalidateArrange(); } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 측정하기 (오버라이드) - MeasureOverride(availableSize) /// <summary> /// 측정하기 (오버라이드) /// </summary> /// <param name="availableSize">이용 가능한 크기</param> /// <returns>측정 크기</returns> protected override Size MeasureOverride(Size availableSize) { double currentX = 0; double currentY = 0; double currentLineHeight = 0; double maximumLineWidth = 0; foreach(UIElement child in Children) { child.Measure(_infiniteSize); if(currentX + child.DesiredSize.Width > availableSize.Width) { currentY += currentLineHeight; currentX = 0; currentLineHeight = 0; } currentX += child.DesiredSize.Width; if(child.DesiredSize.Height > currentLineHeight) { currentLineHeight = child.DesiredSize.Height; } if(currentX > maximumLineWidth) { maximumLineWidth = currentX; } } currentY += currentLineHeight; VerifyScrollData(availableSize, new Size(maximumLineWidth, currentY)); return this.viewportSize; } #endregion #region 배치하기 (오버라이드) - ArrangeOverride(finalSize) /// <summary> /// 배치하기 (오버라이드) /// </summary> /// <param name="finalSize">최종 크기</param> /// <returns>최종 크기</returns> protected override Size ArrangeOverride(Size finalSize) { if(Children == null || Children.Count == 0) { return finalSize; } TranslateTransform transform = null; double currentX = 0; double currentY = 0; double currentLineHeight = 0; double maximumLineWidth = 0; foreach(UIElement child in Children) { transform = child.RenderTransform as TranslateTransform; if(transform == null) { child.RenderTransformOrigin = new Point(0, 0); transform = new TranslateTransform(); child.RenderTransform = transform; } if(currentX + child.DesiredSize.Width > finalSize.Width) { currentY += currentLineHeight; currentX = 0; currentLineHeight = 0; } child.Arrange(new Rect(0, 0, child.DesiredSize.Width, child.DesiredSize.Height)); transform.BeginAnimation ( TranslateTransform.XProperty, new DoubleAnimation(currentX - HorizontalOffset, this.animationTimeSpan), HandoffBehavior.Compose ); transform.BeginAnimation ( TranslateTransform.YProperty, new DoubleAnimation(currentY - VerticalOffset, this.animationTimeSpan), HandoffBehavior.Compose ); currentX += child.DesiredSize.Width; if(child.DesiredSize.Height > currentLineHeight) { currentLineHeight = child.DesiredSize.Height; } if(currentX > maximumLineWidth) { maximumLineWidth = currentX; } } currentY += currentLineHeight; VerifyScrollData(finalSize, new Size(maximumLineWidth, currentY)); return finalSize; } #endregion #region 스크롤 데이터 검증하기 - VerifyScrollData(viewportSize, extentSize) /// <summary> /// 스크롤 데이터 검증하기 /// </summary> /// <param name="viewportSize">뷰포트 크기</param> /// <param name="extentSize">범위 크기</param> protected void VerifyScrollData(Size viewportSize, Size extentSize) { if(double.IsInfinity(viewportSize.Width)) { viewportSize.Width = extentSize.Width; } if(double.IsInfinity(viewportSize.Height)) { viewportSize.Height = extentSize.Height; } this.extentSize = extentSize; this.viewportSize = viewportSize; this.offsetVector.X = Math.Max(0, Math.Min(this.offsetVector.X, ExtentWidth - ViewportWidth )); this.offsetVector.Y = Math.Max(0, Math.Min(this.offsetVector.Y, ExtentHeight - ViewportHeight)); if(ScrollOwner != null) { ScrollOwner.InvalidateScrollInfo(); } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 신규 스크롤 오프셋 계산하기 - CalculateNewScrollOffset(topView, bottomView, topChild, bottomChild) /// <summary> /// 신규 스크롤 오프셋 계산하기 /// </summary> /// <param name="topView">위쪽 뷰</param> /// <param name="bottomView">아래쪽 뷰</param> /// <param name="topChild">위쪽 자식</param> /// <param name="bottomChild">아래쪽 자식</param> /// <returns>신규 스크롤 오프셋</returns> private static double CalculateNewScrollOffset(double topView, double bottomView, double topChild, double bottomChild) { bool offsetBottom = topChild < topView && bottomChild < bottomView; bool offsetTop = bottomChild > bottomView && topChild > topView; bool tooLarge = (bottomChild - topChild) > (bottomView - topView); if(!offsetBottom && !offsetTop) { return topView; } if((offsetBottom && !tooLarge) || (offsetTop && tooLarge)) { return topChild; } return (bottomChild - (bottomView - topView)); } #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:local="clr-namespace:TestProject" Width="800" Height="600" Title="움직이는 랩 패널(Wrap Panel) 사용하기" FontFamily="나눔고딕코딩" FontSize="16"> <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" CanContentScroll="True"> <local:AnimatedWrapPanel> <Image Margin="5" Width="200" Stretch="Uniform" Source="Image\Aquarium.jpg" /> <Image Margin="5" Width="100" Stretch="Uniform" Source="Image\Ascent.jpg" /> <Image Margin="5" Width="300" Stretch="Uniform" Source="Image\Autumn.jpg" /> <Image Margin="5" Width="150" Stretch="Uniform" Source="Image\Crystal.jpg" /> <Image Margin="5" Width="250" Stretch="Uniform" Source="Image\DaVinci.jpg" /> <Image Margin="5" Width="200" Stretch="Uniform" Source="Image\Follow.jpg" /> <Image Margin="5" Width="100" Stretch="Uniform" Source="Image\Friend.jpg" /> <Image Margin="5" Width="300" Stretch="Uniform" Source="Image\Home.jpg" /> <Image Margin="5" Width="100" Stretch="Uniform" Source="Image\MoonFlower.jpg" /> </local:AnimatedWrapPanel> </ScrollViewer> </Window> |
