之前一直做WPF現在開始接觸Slilverlight感觸很多。
今天做一個Button要求
有兩個圖片,button默認有一個圖片,鼠標over時用另一個圖片,
用wpf做的時候寫一個template很簡單,但silverlight和wpf寫起來不一樣
記錄一下。大概思路是兩個image鼠標MouseOver的時候一個Visible一個Collapsed
寫的是一個自定義控件,代碼和皮膚分離,很簡單的一個demo
代碼下載:ImageButtonTest.rar
先寫一個繼承自button的imagebutton類
復制代碼 代碼如下:
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 ImageButtonTest
{
/// <summary>
/// build by lp
/// </summary>
public class MyImageButton : Button
{
public static readonly DependencyProperty ImageNormalProperty =
DependencyProperty.Register("ImageNormal",
typeof(ImageSource),
typeof(MyImageButton),
new PropertyMetadata(null));
public static readonly DependencyProperty ImageHoverProperty =
DependencyProperty.Register("ImageHover",
typeof(ImageSource),
typeof(MyImageButton),
new PropertyMetadata(null));
//鼠標移到上面
public ImageSource ImageHover
{
get { return (ImageSource)GetValue(ImageHoverProperty); }
set { SetValue(ImageHoverProperty, value); }
}
//默認圖片
public ImageSource ImageNormal
{
get { return (ImageSource)GetValue(ImageNormalProperty); }
set { SetValue(ImageNormalProperty, value); }
}
public MyImageButton()
{
this.DefaultStyleKey = typeof(MyImageButton);
}
}
}
一個是鼠標移到上面的imageSource一個是默認的source
看一下它的樣式 用sotryboard控制
鼠標MouseOver的時候一個Visible一個Collapsed
復制代碼 代碼如下:
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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">
<Style TargetType="local:MyImageButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="local:MyImageButton">
<Grid Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="mouseOverImage">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="normalImage">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed"/>
<VisualState x:Name="Disabled"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Image x:Name="normalImage" Source="{TemplateBinding ImageNormal}" Stretch="Fill"/>
<Image x:Name="mouseOverImage" Source="{TemplateBinding ImageHover}" Stretch="Fill" Visibility="Collapsed"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
這樣就可以用了
我們在頁面上調用一下
復制代碼 代碼如下:
<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/全屏鼠標移上.png" ImageNormal="Images/全屏.png" Width="100" Height="100" HorizontalAlignment="Center" VerticalAlignment="Center">
</local:MyImageButton>
</Grid>
</UserControl>