标签:vat 标签 ini windows shadow sof ted col aci
原文:从头实现一个WPF条形图
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有没有这种场景:开源控件库或者收费的控件库,条形图或者柱状图都非常强大,但我的业务就是不符合,就是要自己设计呢?本文通过简单的实现一个条形图功能,以后类似的统计图可以在这上面进行修改,原理是类似的。
小编使用.Net Core 3.1创建的WPF工程,创建名称为“BarChart”的解决方案后,添加名称为”Bar“的WPF用户控件,这个控件就是上图中的单个柱子,下面是Bar.xaml代码
1 <UserControl x:Class="BarChart.Bar" 2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 5 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 6 mc:Ignorable="d" 7 MinHeight="20" Width="Auto" Loaded="UserControl_Loaded"> 8 <Grid SizeChanged="Grid_SizeChanged"> 9 <Grid Background="{Binding Background,ElementName=border}" Opacity="0.3"/> 10 <Border x:Name="border" Background="{Binding Color}" VerticalAlignment="Bottom" Height="{Binding BarHeight}"/> 11 <TextBlock VerticalAlignment="Center" Margin="3" HorizontalAlignment="Center" Text="{Binding Value}" FontSize="20"> 12 <TextBlock.Effect> 13 <DropShadowEffect BlurRadius="1" ShadowDepth="0" Color="White"/> 14 </TextBlock.Effect> 15 </TextBlock> 16 </Grid> 17 </UserControl>
Bar.xaml.cs代码,主要是绑定前景色及背景色,及柱子百分比值。
1 using System.ComponentModel; 2 using System.Windows; 3 using System.Windows.Controls; 4 using System.Windows.Media; 5 6 namespace BarChart 7 { 8 /// <summary> 9 /// BarChart.xaml 的交互逻辑 10 /// </summary> 11 public partial class Bar : UserControl, INotifyPropertyChanged 12 { 13 public event PropertyChangedEventHandler PropertyChanged; 14 private void NotifyPropertyChanged(string info) 15 { 16 if (PropertyChanged != null) 17 { 18 PropertyChanged(this, new PropertyChangedEventArgs(info)); 19 } 20 } 21 22 private double _value; 23 public double Value 24 { 25 get { return _value; } 26 set 27 { 28 _value = value; 29 UpdateBarHeight(); 30 NotifyPropertyChanged("Value"); 31 } 32 } 33 34 private double maxValue; 35 public double MaxValue 36 { 37 get { return maxValue; } 38 set 39 { 40 maxValue = value; 41 UpdateBarHeight(); 42 NotifyPropertyChanged("MaxValue"); 43 } 44 } 45 46 private double barHeight; 47 public double BarHeight 48 { 49 get { return barHeight; } 50 set 51 { 52 barHeight = value; 53 NotifyPropertyChanged("BarHeight"); 54 } 55 } 56 57 private Brush color; 58 public Brush Color 59 { 60 get { return color; } 61 set 62 { 63 color = value; 64 NotifyPropertyChanged("Color"); 65 } 66 } 67 68 private void UpdateBarHeight() 69 { 70 if (maxValue > 0) 71 { 72 var percent = (_value * 100) / maxValue; 73 BarHeight = (percent * this.ActualHeight) / 100; 74 } 75 } 76 77 public Bar() 78 { 79 InitializeComponent(); 80 81 this.DataContext = this; 82 color = Brushes.Black; 83 } 84 85 86 private void UserControl_Loaded(object sender, RoutedEventArgs e) 87 { 88 UpdateBarHeight(); 89 } 90 91 private void Grid_SizeChanged(object sender, SizeChangedEventArgs e) 92 { 93 UpdateBarHeight(); 94 } 95 } 96 }
主窗体MainWindow.xaml,添加显示的业务数据,目前只是展示了进度值,其他标签只要你看懂了代码,很好加的,比如每根柱子,上面颜色显示一种意义名称、下面显示另一种意义名称。
1 <Window x:Class="BarChart.MainWindow" 2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 5 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 6 xmlns:local="clr-namespace:BarChart" 7 mc:Ignorable="d" 8 Background="#FF252525" FontFamily="Nontserrrat" 9 Title="MainWindow" Height="600" Width="1080" WindowStyle="None" ResizeMode="NoResize" WindowStartupLocation="CenterScreen"> 10 <Grid> 11 <Grid.RowDefinitions> 12 <RowDefinition Height="70"/> 13 <RowDefinition Height="*"/> 14 </Grid.RowDefinitions> 15 16 <Border BorderBrush="Gray" BorderThickness="0 0 0 1"> 17 <TextBlock Text="Dotnet9.com" VerticalAlignment="Center" Margin="15" 18 Foreground="White" FontSize="24"/> 19 </Border> 20 21 <Border Grid.Row="1" Width="500" Height="300" VerticalAlignment="Top" 22 HorizontalAlignment="Left" Margin="20" Background="White" 23 BorderBrush="Gray" CornerRadius="12"> 24 <Grid> 25 <TextBlock Text="自定义条形图" Margin="10" FontSize="15"/> 26 <StackPanel Orientation="Horizontal" Height="200" VerticalAlignment="Bottom"> 27 <local:Bar Background="#FF4455AA" Color="#FF88AA55" MaxValue="100" Value="80" Margin="5"/> 28 <local:Bar Background="#FF4335AA" Color="#FF883355" MaxValue="100" Value="26" Margin="5"/> 29 <local:Bar Background="#F26455AA" Color="#FF88A355" MaxValue="100" Value="49" Margin="5"/> 30 <local:Bar Background="#FF4423AA" Color="#FF88A115" MaxValue="100" Value="23" Margin="5"/> 31 <local:Bar Background="#FF4415AA" Color="#FF887955" MaxValue="100" Value="97" Margin="5"/> 32 <local:Bar Background="#FF44513A" Color="#FF896A55" MaxValue="100" Value="68" Margin="5"/> 33 </StackPanel> 34 </Grid> 35 </Border> 36 </Grid> 37 </Window>
参考:
Design com WPF : https://www.youtube.com/watch?v=3Rz9YrwrznQ
文章中代码已经全部贴出,小编这里还是建议:能使用开源的控件库还是使用开源控件库吧,自己定义确实有点麻烦。
本文只是给个例子,方便自定义扩展。
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标签:vat 标签 ini windows shadow sof ted col aci
原文地址:https://www.cnblogs.com/lonelyxmas/p/12075162.html