稳扎稳打Silverlight(41) - 3.0Tip/Trick之GPU 加速, Out-Of-Browser, 应用程序库缓存, 合并 ResourceDictionary, 应用程序扩展服务, Silverlight 插件对象

[索引页]
[源码下载]

稳扎稳打Silverlight(41) - 3.0Tip/Trick之GPU 加速,Out-Of-browser,应用程序库缓存,合并 ResourceDictionary,应用程序扩展服务,Silverlight 插件对象

作者： webabcd

介绍
Silverlight 3.0 提示和技巧系列

GPU 加速 - 对 GPU 加速的支持
Out-Of-browser - 浏览器外运行，即支持脱离浏览器运行
应用程序库缓存 - 将 dll(zip) 缓存到客户端浏览器中
合并 ResourceDictionary - 整合不同位置的 ResourceDictionary
应用程序扩展服务 - 通过扩展 Application 来提供附加服务
Silverlight 插件对象的新增功能 - 在 Silverlight 3.0 中 Silverlight 插件对象的新增功能

在线DEMO
http://www.cnblogs.com/webabcd/archive/2009/08/04/1538238.html

示例
1、如何实现 GPU 加速
GPU.xaml

< navigation:Page x:Class ="Silverlight30.Tip.GPU"

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"

mc:Ignorable ="d"

xmlns:navigation ="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"

d:DesignWidth ="640" d:DesignHeight ="480"

Title ="GPU Page" >

< Grid x:Name ="LayoutRoot" >

< Grid.Resources >

< Storyboard x:Name ="ani" AutoReverse ="True" RepeatBehavior ="Forever" >

< DoubleAnimation Storyboard.TargetName ="st" Storyboard.TargetProperty ="ScaleX"

From ="1" To ="3" Duration ="0:0:3" />

< DoubleAnimation Storyboard.TargetName ="st" Storyboard.TargetProperty ="ScaleY"

From ="1" To ="3" Duration ="0:0:3" />

< DoubleAnimation Storyboard.TargetName ="rt" Storyboard.TargetProperty ="Angle"

From ="0" To ="360" Duration ="0:0:3" />

< DoubleAnimation Storyboard.TargetName ="mediaElement" Storyboard.TargetProperty ="Opacity"

From ="1" To ="0.3" Duration ="0:0:3" />

</ Storyboard >

</ Grid.Resources >

< MediaElement x:Name ="mediaElement" Source ="/Resource/Demo.mp4" Width ="320" Height ="240"

Autoplay ="True" MediaEnded ="mediaElement_MediaEnded" RenderTransformOrigin ="0.5,0.5" >

< MediaElement.RenderTransform >

< TransformGroup >

< ScaleTransform x:Name ="st" ScaleX ="1" ScaleY ="1" />

< RotateTransform x:Name ="rt" Angle ="0" />

</ TransformGroup >

</ MediaElement.RenderTransform >

<!--

CacheMode - 缓存类型，用于 GPU 加速，当前只支持 BitmapCache（用 cpu 呈现 UIElement 一次，其结果位图会被缓存到 GPU，然后通过 GPU 处理）

可被 GPU 加速的有: Scale, Rotate, Opacity, 矩形的Clip

CacheMode.RenderAtScale - 位图缓存相对于当前呈现的 UIElement 的放大倍数。由于需要缓存为位图，而对于 Silverlight 的矢量图形来讲，则可以设置此属性以尽可能避免失真（当然，此值设置得越高，GPU 的负担也会越重）

-->

< MediaElement.CacheMode >

< BitmapCache RenderAtScale ="1" />

</ MediaElement.CacheMode >

</ MediaElement >

< Image Source ="/Resource/logo.jpg" Width ="160" Height ="120" />

</ Grid >

</ navigation:Page >

GPU.xaml.cs

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;

using System.Windows.Navigation;

namespace Silverlight30.Tip

{

public partial class GPU : Page

{

public GPU()

{

InitializeComponent();

this.Loaded += new RoutedEventHandler(GPU_Loaded);

}

void GPU_Loaded(object sender, RoutedEventArgs e)

{

ani.Begin();

}

private void mediaElement_MediaEnded(object sender, RoutedEventArgs e)

{

// 重播

mediaElement.Stop();

mediaElement.Play();

}

GPUTestPage.html（宿主页）

< div id ="silverlightControlHost" >

< object data ="data:application/x-silverlight-2," type ="application/x-silverlight-2"

width ="100%" height ="100%" >

< param name ="source" value ="ClientBin/Silverlight30.xap" />

< param name ="onError" value ="onSilverlightError" />

< param name ="background" value ="white" />

< param name ="minRuntimeVersion" value ="3.0.40624.0" />

< param name ="autoUpgrade" value ="true" />

< param name ="enableGPUacceleration" value ="true" />

<!--

如果该属性为 true 则：

本身的颜色代表被缓存的对象

红色代表未被缓存的对象

绿色代表被自动缓存的对象。如果某对象在被缓存对象的上面，那么该对象会被自动缓存

-->

< param name ="enableCacheVisualization" value ="true" />

<!--

显示的信息在 Silverlight 程序的左上角以黑底白字做显示：

第一个参数：帧率（FPS）

第二个参数：GPU 的内存的使用情况。单位：KB

-->

< param name ="enableFramerateCounter" value ="true" />

< a href ="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40624.0" style ="text-decoration: none" >

< img src ="http://go.microsoft.com/fwlink/?LinkId=108181" alt ="Get Microsoft Silverlight"

style ="border-style: none" />

</ a >

</ object >

< iframe id ="_sl_historyFrame" style ="visibility: hidden; height: 0px; width: 0px;

border: 0px" ></ iframe >

</ div >

2、Out-Of-browser（对浏览器外运行的支持）
OutOfbrowser.xaml

< navigation:Page x:Class ="Silverlight30.Tip.OutOfbrowser"

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"

mc:Ignorable ="d"

xmlns:navigation ="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"

d:DesignWidth ="640" d:DesignHeight ="480"

Title ="OutOfbrowser Page" >

< Grid x:Name ="LayoutRoot" >

< Button x:Name ="button" Click ="button_Click" Width ="100" Height ="30" />

</ Grid >

</ navigation:Page >

OutOfbrowser.xaml.cs

* Application.InstallStateChanged - 浏览器外运行的相关状态发生改变时所触发的事件

* Application.InstallState - 浏览器外运行的相关状态 [System.Windows.InstallState 枚举]

* notinstalled - 在浏览器中运行

* Installing - 安装到桌面中

* Installed - 在浏览器外运行

* InstallFailed - 安装到桌面的过程中发生错误

* Application.IsRunningOutOfbrowser - 当前程序是否是从浏览器外启动的

* Application.Install() - 安装 Silverlight 程序到浏览器外（卸载只能通过右键菜单的方式卸载）

* Application.CheckAndDownloadUpdateAsync, Application.CheckAndDownloadUpdateCompleted - 一对异步方法/事件，用于更新浏览器外运行的 Silverlight 程序（从服务器上下载新的版本）

* 注：在 Silverlight 项目上单击右键 -> 属性 -> Out-of-browser Settings 可以对“浏览器外运行”的相关参数做设置（也可以手动修改 Properties/OutOfbrowserSettings.xml）

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;

using System.Windows.Navigation;

namespace Silverlight30.Tip

{

public partial class OutOfbrowser : Page

{

public OutOfbrowser()

{

InitializeComponent();

this.Loaded += new RoutedEventHandler(OutOfbrowser_Loaded);

}

void OutOfbrowser_Loaded(object sender, RoutedEventArgs e)

{

InitButton();

App.Current.InstallStateChanged += new EventHandler(Current_InstallStateChanged);

}

void Current_InstallStateChanged(object sender, EventArgs e)

{

InitButton();

}

private void InitButton()

{

if (App.Current.IsRunningOutOfbrowser)

{

button.Content = "卸载";

}

else

{

button.Content = "安装";

}

private void button_Click(object sender, RoutedEventArgs e)

{

if (!App.Current.IsRunningOutOfbrowser && App.Current.InstallState == InstallState.notinstalled)

{

App.Current.Install();

}

else

{

MessageBox.Show("请右键卸载");

}

3、应用程序库缓存的说明
ApplicationLibraryCaching.xaml

< navigation:Page x:Class ="Silverlight30.Tip.ApplicationLibraryCaching"

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"

mc:Ignorable ="d"

xmlns:navigation ="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"

d:DesignWidth ="640" d:DesignHeight ="480"

Title ="ApplicationLibraryCaching Page" >

< Grid x:Name ="LayoutRoot" >

< TextBlock >

< Run >

应用程序缓存 - 将 dll 缓存到客户端浏览器中

</ Run >

< LineBreak />

< Run >

启用“应用程序缓存” - 在 Silverlight 项目上单击右键 -> 属性 -> 勾选“ Reduce XAP size by using application library caching”复选框

</ Run >

< LineBreak />

< Run >

“应用程序缓存”不能和“脱离浏览器支持”共同使用

</ Run >

< LineBreak />

< Run >

启用应用程序缓存后，可被缓存的 dll 的属性 copy Local 会被设置为 true

</ Run >

< LineBreak />

< Run >

启用应用程序缓存后，所有可被缓存的 dll 会单独生成一个 zip 包

</ Run >

< LineBreak />

< Run >

AppManifest.xml 会增加相应的 ExternalParts。例： < Deployment.ExternalParts >< ExtensionPart Source= " System.Xml.Linq.zip " / >< /Deployment.ExternalParts >

</ Run >

</ TextBlock >

</ Grid >

</ navigation:Page >

4、合并 ResourceDictionary 的演示
App.xaml（在此处合并不同位置的 ResourceDictionary）

< Application xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml"

x:Class ="Silverlight30.App"

< Application.Resources >

<!--

以 xaml 方式整合外部 ResourceDictionary

-->

< ResourceDictionary >

< ResourceDictionary.MergedDictionaries >

< ResourceDictionary Source ="Style/ButtonStyle1.xaml" />

< ResourceDictionary Source ="Style/ButtonStyle2.xaml" />

</ ResourceDictionary.MergedDictionaries >

</ ResourceDictionary >

<!--

以 cs 方式整合外部 ResourceDictionary

ResourceDictionary dict = System.Windows.Markup.XamlReader.Load(xaml) as ResourceDictionary;

Resources.MergedDictionaries.Add(dict);

-->

</ Application.Resources >

</ Application >

5、应用程序扩展服务的 Demo
App.xaml（注册服务）

< Application xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml"

x:Class ="Silverlight30.App"

xmlns:svc ="clr-namespace:Silverlight30.Tip"

<!--

以 xaml 方式注册扩展服务

-->

< Application.ApplicationLifetimeObjects >

< svc:MyExtensionService />

</ Application.ApplicationLifetimeObjects >

<!--

以 cs 方式注册扩展服务（在 App 的构造函数中）

ApplicationLifetimeObjects.Add(new Silverlight30.Tip.MyExtensionService());

-->

</ Application >

MyExtensionService.cs

* 自定义扩展服务需要实现 Iapplicationservice 接口或 IApplicationLifetimeAware 接口

* Iapplicationservice 接口需要实现 StartService() 方法（Application.Startup 事件之前调用）和 StopService() 方法（Application.Exit 事件之后调用）

* IApplicationLifetimeAware 接口需要实现的方法有 Starting(), Started(), Exiting(), Exited() 其分别在 Application.Startup 事件的之前和之后调用，以及 Application.Exit 事件的之前和之后调用

using System;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Ink;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

namespace Silverlight30.Tip

{

public class MyExtensionService : Iapplicationservice

{

public static MyExtensionService Current { get; set; }

public string ExtensionInfo { get; set; }

public void StartService(applicationserviceContext context)

{

Current = this;

ExtensionInfo = "abc xyz";

}

public void StopService()

{

}

ApplicationExtensionServices.xaml.cs

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;

using System.Windows.Navigation;

namespace Silverlight30.Tip

{

public partial class ApplicationExtensionServices : Page

{

public ApplicationExtensionServices()

{

InitializeComponent();

this.Loaded += new RoutedEventHandler(ApplicationExtensionServices_Loaded);

}

void ApplicationExtensionServices_Loaded(object sender, RoutedEventArgs e)

{

// 调用自定义的扩展服务

MessageBox.Show(MyExtensionService.Current.ExtensionInfo);

}

6、Silverlight 插件对象的新增功能的简要说明
Plugin.xaml

< navigation:Page x:Class ="Silverlight30.Tip.Plugin"

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"

mc:Ignorable ="d"

xmlns:navigation ="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"

d:DesignWidth ="640" d:DesignHeight ="480"

Title ="Plugin Page" >

< Grid x:Name ="LayoutRoot" >

< TextBlock >

< Run >

AllowHtmlPopupWindow - 是否允许使用 HtmlPage.PopupWindow 弹出新窗口

</ Run >

< LineBreak />

< Run >

EnabledAutoZoom - 是否自动调整大小以适应浏览器的缩放

</ Run >

< LineBreak />

< Run >

Enablednavigation - 是否可以使用 HyperlinkButton 导航到外部链接

</ Run >

< LineBreak />

< Run >

Application.Current.Host.Settings, Application.Current.Host.Content - 可对插件的一些属性和一些事件做设置

</ Run >

< LineBreak />

< Run >

EnableGPUacceleration, EnableCacheVisualization, EnableFramerateCounter - 参见 GPUTestPage.html 中的说明

</ Run >

</ TextBlock >

</ Grid >

</ navigation:Page >

OK
[源码下载]

稳扎稳打Silverlight(41) - 3.0Tip/Trick之GPU 加速, Out-Of-Browser, 应用程序库缓存, 合并 ResourceDictionary, 应用程序扩展服务, Silverlight 插件对象

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