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Bug Behavior System.Windows.Media.Pen
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<Window | |
x:Class="WpfApp1.MainWindow" | |
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" | |
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" | |
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" | |
xmlns:local="clr-namespace:WpfApp1" | |
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" | |
Title="MainWindow" | |
Width="800" | |
Height="450" | |
mc:Ignorable="d"> | |
<Grid Name="theGrid"> | |
<Button | |
Width="100" | |
Height="40" | |
Click="Button_Click"> | |
Change Pattern | |
</Button> | |
<TextBlock Name="dashText" Width="300" d:Text="test" TextAlignment="Center" VerticalAlignment="Center" Margin="0,-70,0,0"/> | |
</Grid> | |
</Window> |
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using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.Text; | |
using System.Threading.Tasks; | |
using System.Windows; | |
using System.Windows.Controls; | |
using System.Windows.Data; | |
using System.Windows.Documents; | |
using System.Windows.Input; | |
using System.Windows.Media; | |
using System.Windows.Media.Imaging; | |
using System.Windows.Navigation; | |
using System.Windows.Shapes; | |
namespace WpfApp1 | |
{ | |
public class LineVisual : DrawingVisual | |
{ | |
} | |
public class LineElement : UIElement | |
{ | |
public static Pen Pen { get; set; } = new Pen(new SolidColorBrush(Colors.Black), 3); | |
private LineVisual LineVisual; | |
private LineGeometry lg { get; init; } | |
protected override Visual GetVisualChild(int index) => LineVisual; | |
protected override int VisualChildrenCount => 1; | |
public LineElement(Point start, Point end) | |
{ | |
lg = new LineGeometry(start, end); | |
LineVisual = new LineVisual(); | |
DrawingContext dc = LineVisual.RenderOpen(); | |
dc.DrawGeometry(null, Pen, lg); | |
dc.Close(); | |
} | |
} | |
/// <summary> | |
/// Interaction logic for MainWindow.xaml | |
/// </summary> | |
public partial class MainWindow : Window | |
{ | |
public MainWindow() | |
{ | |
InitializeComponent(); | |
} | |
private int _counter = 0; | |
private int Counter | |
{ | |
get | |
{ | |
return _counter; | |
} | |
set | |
{ | |
if(value == 5) | |
{ | |
_counter = 0; | |
} | |
else | |
{ | |
_counter = value; | |
} | |
} | |
} | |
private double Yval { get; set; } = 20; | |
private void Button_Click(object sender, RoutedEventArgs e) | |
{ | |
switch (Counter) | |
{ | |
case 0: | |
LineElement l1 = new LineElement(new Point(10, Yval), new Point(200, Yval)); | |
theGrid.Children.Add(l1); | |
LineElement.Pen.DashStyle = DashStyles.Solid; | |
dashText.Text = LineElement.Pen.DashStyle.Dashes.ToString(); | |
Yval += 20; | |
Counter++; | |
break; | |
case 1: | |
LineElement.Pen.DashStyle = DashStyles.Dash; | |
dashText.Text = LineElement.Pen.DashStyle.Dashes.ToString(); | |
LineElement l2 = new LineElement(new Point(10,Yval), new Point(200,Yval)); | |
theGrid.Children.Add(l2); | |
Yval += 20; | |
Counter++; | |
break; | |
case 2: | |
LineElement.Pen.DashStyle = DashStyles.Dot; | |
dashText.Text = LineElement.Pen.DashStyle.Dashes.ToString(); | |
LineElement l3 = new LineElement(new Point(10, Yval), new Point(200, Yval)); | |
theGrid.Children.Add(l3); | |
Yval += 20; | |
Counter++; | |
break; | |
case 3: | |
LineElement.Pen.DashStyle = DashStyles.DashDot; | |
dashText.Text = LineElement.Pen.DashStyle.Dashes.ToString(); | |
LineElement l4 = new LineElement(new Point(10, Yval), new Point(200, Yval)); | |
theGrid.Children.Add(l4); | |
Yval += 20; | |
Counter++; | |
break; | |
case 4: | |
LineElement.Pen.DashStyle = DashStyles.DashDotDot; | |
dashText.Text = LineElement.Pen.DashStyle.Dashes.ToString(); | |
LineElement l5 = new LineElement(new Point(10, Yval), new Point(200, Yval)); | |
theGrid.Children.Add(l5); | |
Yval += 20; | |
Counter++; | |
break; | |
default: | |
throw new ArgumentOutOfRangeException(); | |
} | |
} | |
} | |
} |
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