Silverlight button 图片切换样式

2023-11-18 15:25:46

之前一直做WPF现在开始接触Slilverlight感触很多。

今天做一个Button要求

有两个图片，button默认有一个图片，鼠标over时用另一个图片，

用wpf做的时候写一个template很简单，但silverlight和wpf写起来不一样

记录一下。大概思路是两个image鼠标MouseOver的时候一个Visible一个Collapsed

写的是一个自定义控件，代码和皮肤分离，很简单的一个demo

代码下载：ImageButtonTest.rar

先写一个继承自button的imagebutton类

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Net;
 5 using System.Windows;
 6 using System.Windows.Controls;
 7 using System.Windows.Documents;
 8 using System.Windows.Input;
 9 using System.Windows.Media;
10 using System.Windows.Media.Animation;
11 using System.Windows.Shapes;
12 
13 namespace ImageButtonTest
14 {
15     /// <summary>
16     /// build by lp
17     /// </summary>
18     public class MyImageButton : Button
19     {
20         
21         public static readonly DependencyProperty ImageNormalProperty =
22             DependencyProperty.Register("ImageNormal",
23                                         typeof(ImageSource),
24                                         typeof(MyImageButton),
25                                         new PropertyMetadata(null));
26 
27         public static readonly DependencyProperty ImageHoverProperty =
28             DependencyProperty.Register("ImageHover",
29                                         typeof(ImageSource),
30                                         typeof(MyImageButton),
31                                         new PropertyMetadata(null));
32         //鼠标移到上面
33         public ImageSource ImageHover
34         {
35             get { return (ImageSource)GetValue(ImageHoverProperty); }
36             set { SetValue(ImageHoverProperty, value); }
37         }
38         //默认图片
39         public ImageSource ImageNormal
40         {
41             get { return (ImageSource)GetValue(ImageNormalProperty); }
42             set { SetValue(ImageNormalProperty, value); }
43         }
44         
45         public MyImageButton()
46         {
47             this.DefaultStyleKey = typeof(MyImageButton);
48         }
49     }
50 }

一个是鼠标移到上面的imageSource一个是默认的source

看一下它的样式用sotryboard控制

鼠标MouseOver的时候一个Visible一个Collapsed

 1 <ResourceDictionary
 2     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4     xmlns:local="clr-namespace:ImageButtonTest" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d">
 5 
 6 
 7     <Style TargetType="local:MyImageButton">
 8         <Setter Property="Template">
 9             <Setter.Value>
10                 <ControlTemplate TargetType="local:MyImageButton">
11                     <Grid Background="{TemplateBinding Background}">
12                         <VisualStateManager.VisualStateGroups>
13                             <VisualStateGroup x:Name="CommonStates">
14                                 
15                                 <VisualState x:Name="Normal"/>
16                                 <VisualState x:Name="MouseOver">
17                                     <Storyboard>
18                                         <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="mouseOverImage">
19                                             <DiscreteObjectKeyFrame KeyTime="0">
20                                                 <DiscreteObjectKeyFrame.Value>
21                                                     <Visibility>Visible</Visibility>
22                                                 </DiscreteObjectKeyFrame.Value>
23                                             </DiscreteObjectKeyFrame>
24                                         </ObjectAnimationUsingKeyFrames>
25                                         <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="normalImage">
26                                             <DiscreteObjectKeyFrame KeyTime="0">
27                                                 <DiscreteObjectKeyFrame.Value>
28                                                     <Visibility>Collapsed</Visibility>
29                                                 </DiscreteObjectKeyFrame.Value>
30                                             </DiscreteObjectKeyFrame>
31                                         </ObjectAnimationUsingKeyFrames>
32                                     </Storyboard>
33                                 </VisualState>
34                                 <VisualState x:Name="Pressed"/>
35                                 <VisualState x:Name="Disabled"/>
36                             </VisualStateGroup>
37                         </VisualStateManager.VisualStateGroups>
38                         <Image x:Name="normalImage" Source="{TemplateBinding ImageNormal}" Stretch="Fill"/>
39                         <Image x:Name="mouseOverImage" Source="{TemplateBinding ImageHover}" Stretch="Fill" Visibility="Collapsed"/>
40                     </Grid>
41                 </ControlTemplate>
42             </Setter.Value>
43         </Setter>
44     </Style>
45 </ResourceDictionary>

这样就可以用了

我们在页面上调用一下

<UserControl
    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:ImageButtonTest" x:Class="ImageButtonTest.MainPage"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">
        <local:MyImageButton   Margin="0" ImageHover="Images/全屏鼠标移上.png" ImageNormal="Images/全屏.png" Width="100" Height="100" HorizontalAlignment="Center" VerticalAlignment="Center">            
        </local:MyImageButton>
    </Grid>
</UserControl>

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