[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
@H_301_12@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" />
<!-- enableGPUacceleration - 是否启用 GPU 加速 -->
< param name ="enableGPUacceleration" value ="true" />
<!-- enableCacheVisualization - 是否将缓存区域可视化 -->
<!--
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" />
<!-- enableFramerateCounter - 是否显示帧率的相关信息 -->
<!--
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" >
<!-- 安装/卸载按钮 -->
< 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 />
< 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 d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] 总结
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