一个简单的颜色拾取器

来源：互联网发布：大数据修炼系统123 编辑：程序博客网时间：2024/06/03 02:07

MainApp.xaml

    <Grid x:Name="LayoutRoot" Background="White">
        <Grid x:Name="layoutRoot" Background="White">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="260"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="120"/>
                <RowDefinition Height="120"/>
            </Grid.RowDefinitions>
            <Rectangle Grid.Row="0" Grid.Column="1" Name="PreviewColor" Fill="#FF6600" Margin="10" Stroke="#666666" StrokeThickness="2"/>
            <StackPanel Grid.Row="1" Grid.Column="1">
                <TextBlock FontSize="12">Color</TextBlock>
                <TextBox x:Name="HexColor" Width="160" Height="30" Text="#FF6600" Margin="10,5" FontSize="11"/>
                <Button x:Name="button" Content="提交" Click="button_Click"></Button>
            </StackPanel>
            <StackPanel Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" VerticalAlignment="Center">
                <TextBlock Text="Alpha" Margin="10,15,0,0"></TextBlock>
                <Slider x:Name="AlphaSlider" Margin="20,0,10,0" Maximum="255" Value="255"></Slider>
                <TextBlock Text="Red" Margin="10,15,0,0"></TextBlock>
                <Slider x:Name="RedSlider" Margin="20,0,10,0" Maximum="255" ValueChanged="RedSlider_ValueChanged" ></Slider>
                <TextBlock Text="Green" Margin="10,15,0,0"></TextBlock>
                <Slider x:Name="GreenSlider" Margin="20,0,10,0" Maximum="255" Value="102"></Slider>
                <TextBlock Text="Blue" Margin="10,15,0,0"></TextBlock>
                <Slider x:Name="BlueSlider" Margin="20,0,10,0" Maximum="255" Value="0"></Slider>
            </StackPanel>
        </Grid>
    </Grid>
</UserControl>

MainApp.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace SilverlightApplication1
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void RedSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            Color color = Color.FromArgb((byte)AlphaSlider.Value, (byte)RedSlider.Value, (byte)GreenSlider.Value, (byte)BlueSlider.Value);
            //Color color = Color.FromArgb(1, 1, 1, 1);
            PreviewColor.Fill = new SolidColorBrush(color);
            HexColor.Text = color.ToString(); ;
        }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            Color color = Color.FromArgb((byte)AlphaSlider.Value, (byte)RedSlider.Value, (byte)GreenSlider.Value, (byte)BlueSlider.Value);
           //Color color = Color.FromArgb(1, 1, 1, 1);
            PreviewColor.Fill = new SolidColorBrush(color);
            HexColor.Text =color.ToString();

}
}
}

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