WPF 的 style 定义 使用 继承 复用

style 样式

1. 如何定义一个 style 样式

	 <Button Content="样式" Width="100" Height="50">
	     <Button.Style>
	         <Style>
	             
	         </Style>
	     </Button.Style>
	 </Button>

2. 拥有的属性
   1. targetType = “” 针对什么类型生效
   2. setter 设置属性的值 property = “属性名称” value = “值”
   3. triggers 触发器，当命中后触发什么条件.
   4. multitriggers 多重条件触发器
   5. eventTriggers 事件触发器，内部都是动画。

   	<Button >
       <Button.Style>
           <Style TargetType="Button">
               <Style.Setters>
                   <Setter Property="Width" Value="100"></Setter>
                   <Setter Property="Height" Value="100"></Setter>
                   <Setter Property="Content" Value="不好"></Setter>
                   <Setter Property="Background" Value="#FFA500"></Setter>
               </Style.Setters>
               <Style.Triggers>
                   <!--当鼠标移动上时触发以下条件-->
                   <Trigger Property="IsMouseOver" Value="True">
                       <Setter Property="Content" Value="你好"></Setter>
                   </Trigger>
                   <MultiTrigger>
                       <MultiTrigger.Conditions>
                         <!--当鼠标移动上时并且发生点击的时候触发以下条件-->
                           <Condition Property="IsMouseOver" Value="True"></Condition>
                           <Condition Property="IsPressed" Value="True"></Condition>
                       </MultiTrigger.Conditions>
                       <MultiTrigger.Setters>
                           <Setter Property="Foreground" Value="Red"/>
                       </MultiTrigger.Setters>
                   </MultiTrigger>
                   <!--事件触发器,点击鼠标右键-->
   				<EventTrigger RoutedEvent="MouseRightButtonDown">
   				    <BeginStoryboard>
   				        <Storyboard>
   				            <!--在1秒钟的事件里,对属性值进行变更,这里是将宽高变成250-->
   				            <DoubleAnimation Duration="0:0:1" To="250" Storyboard.TargetProperty="Width"></DoubleAnimation>
   				            <DoubleAnimation Duration="0:0:1" To="250" Storyboard.TargetProperty="Height"></DoubleAnimation>
   				        </Storyboard>
   				    </BeginStoryboard>
   				</EventTrigger>
               </Style.Triggers>
           </Style>
       </Button.Style>
   </Button>
   

3. Style 的复用
   如何定义一个资源的使用。

   <Window x:Class="zhiyu.training.StyleWindow"
       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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
       xmlns:local="clr-namespace:zhiyu.training"
       mc:Ignorable="d"
       Title="StyleWindow" Height="450" Width="800"
       xmlns:sys ="clr-namespace:System;assembly=mscorlib">
   <Window.Resources>
       <!--如何定义一个int类型的变量-->
       <sys:Double x:Key="value">123</sys:Double>
   </Window.Resources>
   <Grid>
       <Button Width="{StaticResource value}" Height="30" Margin="10" HorizontalAlignment="Left">
           <Button.Style>
               <Style TargetType="Button">
               <!--在 style 中定义资源-->
                   <Style.Resources>
                       <SolidColorBrush Color="Green" x:Key="Brush"></SolidColorBrush>
                   </Style.Resources>
                   <!-- 引用资源 -->
                   <Setter Property="Background" Value="{StaticResource Brush}"></Setter>
               </Style>
           </Button.Style>
       </Button>
   </Grid>
   

如何复用一个 style

 	<Window x:Class="zhiyu.training.StyleWindow"
         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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:zhiyu.training"
         mc:Ignorable="d"
         Title="StyleWindow" Height="450" Width="800"
         xmlns:sys ="clr-namespace:System;assembly=mscorlib">
  <Window.Resources>
 		<!--如何定义一个int类型的变量-->
 		<sys:Double x:Key="value">123</sys:Double>
 		<Style TargetType="Button">
 		        <Style.Resources>
 		            <SolidColorBrush Color="Green" x:Key="Brush"></SolidColorBrush>
 		        </Style.Resources>
 		        <Setter Property="Background" Value="{StaticResource Brush}"></Setter>
 		 </Style>
 		
 		<Style TargetType="Button" x:Key="ab">
 		    <Style.Resources>
 		        <SolidColorBrush Color="Yellow" x:Key="Brush"></SolidColorBrush>
 		    </Style.Resources>
 		    <Setter Property="Background" Value="{StaticResource Brush}"></Setter>
 		</Style>
 	 </Window.Resources>
 	 <Grid>
 		  <!--全局风格-->
 		 <Button Width="{StaticResource value}" Height="30" Margin="10" HorizontalAlignment="Left"></Button>
 		 <!--使用ab风格-->
 		 <Canvas>
 		     <Button Style="{StaticResource ab}" Height="30" Width="200"  Canvas.Top="50"></Button>
 		 </Canvas>
 		 <!--什么风格都不用-->
 		 <Canvas>
 		     <Button Style="{x:Null}" Height="30" Width="200"  Canvas.Top="100"></Button>
 		 </Canvas>
 	 </Button>
 	 </Grid>
 </Window>

如何继承一个 Style BaseOn

 <Window.Resources>
   	
   	 <Style TargetType="Button" x:Key="baseOn">
   	     <Setter Property="Content" Value="你好"></Setter>
   	 </Style>
   	<!-- 使用 BaseOn 继承-->
   	 <Style TargetType="Button" x:Key="ab" BasedOn="{StaticResource baseOn}">
   	     <Style.Resources>
   	         <SolidColorBrush Color="Yellow" x:Key="Brush"></SolidColorBrush>
   	     </Style.Resources>
   	     <Setter Property="Background" Value="{StaticResource Brush}"></Setter>
   	 </Style>
   	 </Window.Resources>
<Grid>
<Canvas>
   <Button Style="{StaticResource ab}" Height="30" Width="200"  Canvas.Top="50"></Button>
</Canvas>
</Grid>