■ 원 위에 문자를 그리는 방법을 보여준다.
▶ 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="원 위에 문자 그리기" FontFamily="나눔고딕코딩" FontSize="16" Loaded="Window_Loaded"> <Grid Background="LightGreen"> <Grid.RowDefinitions> <RowDefinition Height="30" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="50" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Label Name="zoomLabel" Grid.Row="0" Grid.Column="0" HorizontalAlignment="Center" VerticalAlignment="Center" Content="100%" /> <Slider Name="slider" Grid.Row="1" Grid.Column="0" Margin="0 0 0 5" HorizontalAlignment="Center" Orientation="Vertical" Minimum="25" Maximum="500" Value="100" SmallChange="25" LargeChange="25" TickFrequency="25" TickPlacement="BottomRight" IsSnapToTickEnabled="True" ValueChanged="slider_ValueChanged" /> <ScrollViewer Name="scvGraph" Grid.Row="0" Grid.Column="1" Grid.RowSpan="2" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto"> <Canvas Name="canvas" HorizontalAlignment="Center" VerticalAlignment="Center" Width="400" Height="400" Background="White" /> </ScrollViewer> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Shapes; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #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) { double width = this.canvas.ActualWidth; double height = this.canvas.ActualHeight; double centerX = width / 2; double centerY = height / 2; for(int radius = 200; radius > 0; radius -= 50) { byte blue = (byte)(radius / 2 + 155); byte red = (byte)(blue / 2); byte green = (byte)(blue / 2); Ellipse ellipse = new Ellipse(); ellipse.Fill = new SolidColorBrush(Color.FromArgb(255, red, green, blue)); ellipse.Stroke = Brushes.Black; ellipse.StrokeThickness = 3; Canvas.SetLeft(ellipse, centerX - radius); Canvas.SetTop (ellipse, centerY - radius); ellipse.Width = 2 * radius; ellipse.Height = 2 * radius; this.canvas.Children.Add(ellipse); } double fontSize = 10; for(int radius = 25; radius < 200; radius += 50) { const double ANGLE_COUNT = 6; double deltaTheta = 360 / ANGLE_COUNT; double theta = deltaTheta / 2; for(int i = 0; i < ANGLE_COUNT; i++) { double angle = 90 - theta; double radians = (angle - 90) / 180 * Math.PI; double x = centerX + radius * Math.Cos(radians); double y = centerY + radius * Math.Sin(radians); string text = ((int)theta).ToString(); DrawText ( this.canvas, text, new Point(x, y), angle, fontSize, HorizontalAlignment.Center, VerticalAlignment.Center ); theta += deltaTheta; } fontSize += 3; } } #endregion #region 슬라이더 값 변경시 처리하기 - slider_ValueChanged(sender, e) /// <summary> /// 슬라이더 값 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e) { if(!IsInitialized) { return; } this.zoomLabel.Content = slider.Value + "%"; double scale = (double)(slider.Value / 100.0); this.canvas.LayoutTransform = new ScaleTransform(scale, scale); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 텍스트 그리기 - DrawText(canvas, text, location, angle, fontSize, horizontalAlignment, verticalAlignment) /// <summary> /// 텍스트 그리기 /// </summary> /// <param name="canvas">캔버스</param> /// <param name="text">텍스트</param> /// <param name="location">위치</param> /// <param name="angle">각도</param> /// <param name="fontSize">폰트 크기</param> /// <param name="horizontalAlignment">수평 정렬</param> /// <param name="verticalAlignment">수직 정렬</param> private void DrawText(Canvas canvas, string text, Point location, double angle, double fontSize, HorizontalAlignment horizontalAlignment, VerticalAlignment verticalAlignment) { Label label = new Label(); label.Content = text; label.FontSize = fontSize; canvas.Children.Add(label); if(angle != 0) { label.LayoutTransform = new RotateTransform(angle); } label.Measure(new Size(double.MaxValue, double.MaxValue)); double x = location.X; if(horizontalAlignment == HorizontalAlignment.Center) { x -= label.DesiredSize.Width / 2; } else if(horizontalAlignment == HorizontalAlignment.Right) { x -= label.DesiredSize.Width; } Canvas.SetLeft(label, x); double y = location.Y; if(verticalAlignment == VerticalAlignment.Center) { y -= label.DesiredSize.Height / 2; } else if(verticalAlignment == VerticalAlignment.Bottom) { y -= label.DesiredSize.Height; } Canvas.SetTop(label, y); } #endregion } } |
