1 using System;  2 using System.Net;  3 using System.Windows;  4 using System.Windows.Browser;  5 using System.Windows.Controls;  6 using System.Windows.Documents;  7 using System.Windows.Ink;  8 using System.Windows.Input;  9 using System.Windows.Media; 10 using System.Windows.Media.Animation; 11 using System.Windows.Shapes; 12  13 namespace TWSL.Common 14 { 15     /// <summary>   16     /// 浏览器屏幕信息类   17     /// </summary>   18     public class Browser 19     { 20         /// <summary>      21         /// During static instantiation, only the Netscape flag is checked      22         /// </summary>      23         static Browser() 24         { 25             _isNavigator = HtmlPage.BrowserInformation.Name.Contains("Netscape"); 26         } 27  28         /// <summary>      29         /// Flag indicating Navigator/Firefox/Safari or Internet Explorer      30         /// </summary>      31         private static bool _isNavigator; 32  33         /// <summary>      34         /// Provides quick access to the window.screen ScriptObject      35         /// </summary>      36         private static ScriptObject Screen 37         { 38             get 39             { 40                 ScriptObject screen = (ScriptObject)HtmlPage.Window.GetProperty("screen"); 41  42                 if (screen == null) 43                 { 44                     throw new InvalidOperationException(); 45                 } 46  47                 return screen; 48             } 49         } 50  51         /// <summary>      52         /// Gets the window object‘s client width      53         /// </summary>      54         public static double ClientWidth 55         { 56             get 57             { 58                 return _isNavigator ? (double)HtmlPage.Window.GetProperty("innerWidth") 59                     : (double)HtmlPage.Document.Body.GetProperty("clientWidth"); 60             } 61  62         } 63  64         /// <summary>      65         /// Gets the window object‘s client height      66         /// </summary>      67         public static double ClientHeight 68         { 69             get 70             { 71                 return _isNavigator ? (double)HtmlPage.Window.GetProperty("innerHeight") 72                     : (double)HtmlPage.Document.Body.GetProperty("clientHeight"); 73             } 74         } 75  76         /// <summary>      77         /// Gets the current horizontal scrolling offset      78         /// </summary>      79         public static double ScrollLeft 80         { 81             get 82             { 83                 return _isNavigator ? (double)HtmlPage.Window.GetProperty("pageXOffset") 84                     : (double)HtmlPage.Document.Body.GetProperty("scrollLeft"); 85             } 86         } 87  88         /// <summary>      89         /// Gets the current vertical scrolling offset      90         /// </summary>      91         public static double ScrollTop 92         { 93             get 94             { 95                 return _isNavigator ? (double)HtmlPage.Window.GetProperty("pageYOffset") 96                     : (double)HtmlPage.Document.Body.GetProperty("scrollHeight"); 97             } 98         } 99 100         /// <summary>     101         /// Gets the width of the entire display     102         /// </summary>     103         public static double ScreenWidth104         {105             get106             {107                 return (double)Screen.GetProperty("width");108             }109         }110 111         /// <summary>     112         /// Gets the height of the entire display     113         /// </summary>     114         public static double ScreenHeight115         {116             get117             {118                 return (double)Screen.GetProperty("height");119             }120         }121 122         /// <summary>     123         /// Gets the width of the available screen real estate, excluding the dock     124         /// or task bar     125         /// </summary>     126         public static double AvailableScreenWidth127         {128             get129             {130                 return (double)Screen.GetProperty("availWidth");131             }132         }133 134         /// <summary>     135         /// Gets the height of the available screen real estate, excluding the dock     136         /// or task bar     137         /// </summary>     138         public static double AvailableScreenHeight139         {140             get141             {142                 return (double)Screen.GetProperty("availHeight");143             }144         }145 146         /// <summary>     147         /// Gets the absolute left pixel position of the window in display coordinates     148         /// </summary>     149         public static double ScreenPositionLeft150         {151             get152             {153                 return _isNavigator ? (double)HtmlPage.Window.GetProperty("screenX")154                     : (double)HtmlPage.Window.GetProperty("screenLeft");155             }156         }157 158         /// <summary>     159         /// Gets the absolute top pixel position of the window in display coordinates     160         /// </summary>     161         public static double ScreenPositionTop162         {163             get164             {165                 return _isNavigator ? (double)HtmlPage.Window.GetProperty("screenY")166                     : (double)HtmlPage.Window.GetProperty("screenTop");167             }168         }169 170     }171 }