个人网站的主题,asp网站源码使用,ocin wordpress主题,wordpress自动关键词前一篇文章中简要讲解了圆角按钮、圆形按钮的使用，以及在windows.resource和app.resource中设置圆角或圆形按钮的样式。
这篇主要讲解Polygon（多边形）、Ellipse（椭圆）、Path(路径)这三个内容。
Polygon
我们先看一下的源码：
namespace System.Windows.Shapes { pu…前一篇文章中简要讲解了圆角按钮、圆形按钮的使用，以及在windows.resource和app.resource中设置圆角或圆形按钮的样式。
这篇主要讲解Polygon（多边形）、Ellipse（椭圆）、Path(路径)这三个内容。
Polygon
我们先看一下的源码：
namespace System.Windows.Shapes { public sealed class Polygon : Shape { public static readonly DependencyProperty PointsProperty = DependencyProperty.Register("Points", typeof(PointCollection), typeof(Polygon), new FrameworkPropertyMetadata((object)new FreezableDefaultValueFactory((Freezable)PointCollection.get_Empty()), FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsRender)); public static readonly DependencyProperty FillRuleProperty = DependencyProperty.Register("FillRule", typeof(FillRule), typeof(Polygon), (PropertyMetadata)new FrameworkPropertyMetadata(FillRule.EvenOdd, FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsRender), (ValidateValueCallback)ValidateEnums.IsFillRuleValid); private Geometry _polygonGeometry; public PointCollection Points { get { return (PointCollection)GetValue(PointsProperty); } set { SetValue(PointsProperty, value); } } public FillRule FillRule { get { return (FillRule)GetValue(FillRuleProperty); } set { SetValue(FillRuleProperty, value); } } protected override Geometry DefiningGeometry = _polygonGeometry; internal override void CacheDefiningGeometry() { PointCollection points = Points; PathFigure pathFigure = new PathFigure(); if (points == null) { _polygonGeometry = Geometry.Empty; return; } if (points.Count 0) { pathFigure.StartPoint = points[0]; if (points.Count 1) { Point[] array = new Point[points.Count - 1]; for (int i = 1; i points.Count; i++) { array[i - 1] = points[i]; } pathFigure.Segments.Add(new PolyLineSegment(array, isStroked: true)); } pathFigure.IsClosed = true; } PathGeometry pathGeometry = new PathGeometry(); pathGeometry.Figures.Add(pathFigure); pathGeometry.FillRule = FillRule; _polygonGeometry = pathGeometry; } }
}
从源码的信息可以看到Polygon是继承自Shape的类，可用的属性只有PointsProperty、FillRuleProperty两个属性；PointsProperty是PointCollection的Point集合，而Point实质就是一个二维坐标集合，因此在Polygon的使用中Points的中的数据必须是2N个。用法如下：
Polygon Points="100,400 200,370 180,470" Fill="#4EB1B6" /!--多边形--
效果图： Ellipse
源码如下：
namespace System.Windows.Shapes { public sealed class Ellipse : Shape { private Rect _rect = Rect.Empty; public override Geometry RenderedGeometry = DefiningGeometry; public override Transform GeometryTransform = Transform.Identity; protected override Geometry DefiningGeometry { get { if (_rect.IsEmpty) { return Geometry.Empty; } return new EllipseGeometry(_rect); } } internal override int EffectiveValuesInitialSize = 13; static Ellipse() { Shape.StretchProperty.OverrideMetadata(typeof(Ellipse), new FrameworkPropertyMetadata(Stretch.Fill)); } protected override Size MeasureOverride(Size constraint) { if (base.Stretch == Stretch.UniformToFill) { double width = constraint.Width; double height = constraint.Height; if (double.IsInfinity(width) double.IsInfinity(height)) { return GetNaturalSize(); } width = ((!double.IsInfinity(width) !double.IsInfinity(height)) ? Math.Max(width, height) : Math.Min(width, height)); return new Size(width, width); } return GetNaturalSize(); } protected override Size ArrangeOverride(Size finalSize) { double strokeThickness = GetStrokeThickness(); double num = strokeThickness / 2.0; _rect = new Rect(num, num, Math.Max(0.0, finalSize.Width - strokeThickness), Math.Max(0.0, finalSize.Height - strokeThickness)); switch (base.Stretch) { case Stretch.None: { double num4 = (_rect.Width = (_rect.Height = 0.0)); break; } case Stretch.Uniform: if (_rect.Width _rect.Height)
