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WPF控件库：文字按钮的封装

2024-07-04 18:04:24   225人阅读

需求：封装按钮，按钮上面只显示文字。在鼠标移上去、鼠标点击按钮、以及将按钮设为不可用时按钮的背景色和前景色需要发生变化

实现：继承Button类，封装如下6个属性：

#region 依赖属性
/// <summary>
/// 当鼠标移到按钮上时，按钮的前景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MouserOverForegroundProperty =
    DependencyProperty.Register ( "MouserOverForeground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.Black ) );

/// <summary>
/// 鼠标移到按钮上时，按钮的背景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MouseOverBackgroundProperty =
    DependencyProperty.Register ( "MouseOverBackground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.White ) );

/// <summary>
/// 当鼠标按下时，按钮的前景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MousedownForegroundProperty =
    DependencyProperty.Register ( "MousedownForeground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.Black ) );

/// <summary>
/// 当鼠标按下时，按钮的背景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MousedownBackgroundProperty =
    DependencyProperty.Register ( "MousedownBackground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.White ) );

/// <summary>
/// 当按钮不可用时，按钮的前景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty DisabledForegroundProperty =
    DependencyProperty.Register ( " DisabledForeground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.Black ) );

/// <summary>
/// 当按钮不可用时，按钮的背景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty DisabledBackgroundProperty =
    DependencyProperty.Register ( "DisabledBackground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.White ) );
#endregion

然后更改按钮的样式，样式封装在资源字典中：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:Zmy.Wpf.Controls">
    <Style x:Key="TextButtonStyle" TargetType="{x:Type local:TextButton}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:TextButton}">
                    <Border x:Name="buttonBorder"
                            Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding Foreground}">
                        <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource Self}, Path=MouserOverForeground}"/>
                <Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=MouseOverBackground}"/>
            </Trigger>

            <Trigger Property="IsPressed" Value="True">
                <Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource Self}, Path=MousedownForeground}"/>
                <Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=MousedownBackground}"/>
            </Trigger>

            <Trigger Property="IsEnabled" Value="False">
                <Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource Self}, Path=DisabledForeground}"/>
                <Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=DisabledBackground}"/>
            </Trigger>
        </Style.Triggers>
    </Style>
</ResourceDictionary>

然后在TextButton的构造函数中设置按钮的样式：

#region 构造函数
public TextButton() : base()
{
    //获取资源文件信息
    ResourceDictionary rd = new ResourceDictionary();
    rd.Source = new Uri ( "/Zmy.Wpf.Controls;component/Style.xaml", UriKind.Relative );
    this.Resources.MergedDictionaries.Add ( rd );
    //设置样式
    this.Style = this.FindResource ( "TextButtonStyle" ) as Style;
}
#endregion

这样整个文字按钮就封装好了，调用起来非常简单：

        <controls:TextButton Content="测试按钮" Width="300" Height="50"
                             MouserOverForeground="Yellow" MouseOverBackground="Blue" MousedownBackground="Green" MousedownForeground="Blue"/>

        <controls:TextButton Content="测试按钮" Width="300" Height="50" IsEnabled="False"
                             DisabledForeground="Yellow" DisabledBackground="Blue" Margin="0,100,0,0"/>

 

 源代码下载：http://download.csdn.net/detail/lyclovezmy/7356125

不要积分。

对应的图片按钮封装：http://www.cnblogs.com/DoNetCoder/p/3732310.html


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