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wpf ListView圆角
网上找了 好久 没找到好的
自己实现了3种
1.用clip属性
2。用装饰器Adorner
3.修改模板
1。clip 就是画一个圆角矩形
但是这个在listview size 变化时 也要调用这个方法
代码如下：
1 using System; 2 using System.Windows; 3 using System.Windows.Media; 4 5 class ClipRadiusView 6 { 7 private static double DisX = 20; 8 private static double DisY = 20; 9 static Size XY=new Size(DisX,DisY);10 11 private static bool isLarge = false;12 private static bool isStroke = true;13 private static double angle = 150;14 15 private static int offx = 3;16 private static int offy = 2;17 18 static Point StartPoint = new Point(offx, DisY);19 static Point P1 = new Point(DisX, offy);20 21 22 public static void InitClip(FrameworkElement el)23 {24 double w = el.ActualWidth;25 double h = el.ActualHeight;26 if(w<DisX*2||h<DisY*2)27 return;28 29 30 PathFigure myFigure=new PathFigure();31 32 33 34 myFigure.StartPoint = StartPoint;35 36 ArcSegment a1=new ArcSegment(P1, XY, angle,isLarge,SweepDirection.Clockwise, isStroke);37 myFigure.Segments.Add(a1);38 39 Point p2 = new Point(w - DisX, offy);40 LineSegment l1 = new LineSegment(p2, true);41 myFigure.Segments.Add(l1);42 43 Point p3 = new Point(w, DisY);44 ArcSegment a2 = new ArcSegment(p3, XY, angle, isLarge, SweepDirection.Clockwise, isStroke);45 myFigure.Segments.Add(a2);46 47 Point p4 = new Point(w, h - DisY);48 LineSegment l2 = new LineSegment(p4, true);49 myFigure.Segments.Add(l2);50 51 Point p5 = new Point(w - DisX, h);52 ArcSegment a3 = new ArcSegment(p5, XY, angle, isLarge, SweepDirection.Clockwise, isStroke);53 myFigure.Segments.Add(a3);54 55 Point p6 = new Point(DisX, h);56 LineSegment l3 = new LineSegment(p6, true);57 myFigure.Segments.Add(l3);58 59 Point p7 = new Point(offx, h - DisY);60 ArcSegment a4 = new ArcSegment(p7, XY, angle, isLarge, SweepDirection.Clockwise, isStroke);61 myFigure.Segments.Add(a4);62 63 //Point p8 = new Point(offx, DisY);64 //LineSegment l4 = new LineSegment(p8, true);65 //myFigure.Segments.Add(l4);66 67 myFigure.IsClosed = true;68 PathGeometry pg = new PathGeometry();69 pg.Figures.Add(myFigure);70 el.ClipToBounds = true;71 el.Clip = pg;72 }73 }
2.装饰器Adorner
就是再四个角落画一个和背景色一样的圆角
这个 会随着尺寸变化而变化
using System.Windows;using System.Windows.Documents;using System.Windows.Media; class RadiusAdorner : Adorner { private Brush _backBrush = Brushes.White; private Pen renderPen; public RadiusAdorner(UIElement el, Brush pen) : base(el) { if (pen != null) _backBrush = pen; renderPen = new Pen(_backBrush, 0); } private static double DisX = 20; private static double DisY = 20; Size XY = new Size(DisX, DisY); private bool isLarge = false; private bool isStroke = true; private double angle = 90; private double penSize = 2; private Point _start; private PathGeometry _pg; private PathFigure _pf; private Point _start1; private Point _p1; private Point _p2; private LineSegment _line; private ArcSegment _arc; private Rect _adornedElementRect; protected override void OnRender(DrawingContext drawingContext) { _adornedElementRect = new Rect(this.AdornedElement.RenderSize); double w = _adornedElementRect.Width; double h = _adornedElementRect.Height; _start = new Point(_adornedElementRect.X, _adornedElementRect.Y); _pg = new PathGeometry(); _pf = new PathFigure(); //左上角 _start1 = _start; _pf = new PathFigure(); _pf.StartPoint = _start1; _p1 = new Point(_start1.X + DisX, _start1.Y); _line = new LineSegment(_p1, true); _pf.Segments.Add(_line); _p2 = new Point(_start1.X, _start1.Y + DisY); _arc = new ArcSegment(_p2, XY, angle, isLarge, SweepDirection.Counterclockwise, isStroke); _pf.Segments.Add(_arc); _pf.IsClosed = true; _pg.Figures.Add(_pf); ////顶部画一条线 //_start1 = new Point(_start.X, _start.Y + 2); ; //_pf=new PathFigure(); //_pf.StartPoint = _start1; //_p1=new Point(_start1.X+w,_start1.Y); //_line=new LineSegment(_p1,true); //_pf.Segments.Add(_line); //_pg.Figures.Add(_pf); //右上角 _start1 = new Point(_start.X + w, _start.Y); _pf = new PathFigure(); _pf.StartPoint = _start1; _p1 = new Point(_start1.X - DisX, _start1.Y); _line = new LineSegment(_p1, true); _pf.Segments.Add(_line); _p2 = new Point(_start1.X, _start1.Y + DisY); _arc = new ArcSegment(_p2, XY, angle, isLarge, SweepDirection.Clockwise, isStroke); _pf.Segments.Add(_arc); _pf.IsClosed = true; _pg.Figures.Add(_pf); //右下角 _start1 = new Point(_start.X + w, _start.Y + h); _pf = new PathFigure(); _pf.StartPoint = _start1; _p1 = new Point(_start1.X - DisX, _start1.Y); _line = new LineSegment(_p1, true); _pf.Segments.Add(_line); _p2 = new Point(_start1.X, _start1.Y - DisY); _arc = new ArcSegment(_p2, XY, angle, isLarge, SweepDirection.Counterclockwise, isStroke); _pf.Segments.Add(_arc); _pf.IsClosed = true; _pg.Figures.Add(_pf); //左下角 _start1 = new Point(_start.X, _start.Y + h); _pf = new PathFigure(); _pf.StartPoint = _start1; _p1 = new Point(_start1.X + DisX, _start1.Y); _line = new LineSegment(_p1, true); _pf.Segments.Add(_line); _p2 = new Point(_start1.X, _start1.Y - DisY); _arc = new ArcSegment(_p2, XY, angle, isLarge, SweepDirection.Clockwise, isStroke); _pf.Segments.Add(_arc); _pf.IsClosed = true; _pg.Figures.Add(_pf); drawingContext.DrawGeometry(renderPen.Brush, renderPen, _pg); } static Brush defaulBrushe=new SolidColorBrush(new Color{A = 255,R=137,G=181,B=233}); public static void AddRadiusAdorner(FrameworkElement el) { RadiusAdorner ra=new RadiusAdorner(el,defaulBrushe); AdornerLayer al = AdornerLayer.GetAdornerLayer(el); if (al != null) { al.Add(ra); } } }3 模板
就是修改ListView的默认Template 参考msdn listview样式里的 改
但是gridview的上面部分 不能切成圆角
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