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Silverlightbutton圖片切換樣式實例代碼

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>

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