与众不同 windows phone 7.5 (sdk 7.1) 之输入: 捕获 UIElement 之外的触控操作; Silverlight 方式捕获手势操作; XNA 方式捕获手势操作; 多点触控




与众不同 windows phone (25) - Input(输入)之捕获 UIElement 之外的触控操作, Silverlight 方式捕获手势操作, XNA 方式捕获手势操作, 多点触控


作者:webabcd



介绍

与众不同 windows phone 7.5 (sdk 7.1) 之输入


  • 捕获 UIElement 之外的触控操作
  • Silverlight 方式捕获手势操作
  • XNA 方式捕获手势操作
  • 多点触控


示例

1、演示如何捕获 UIElement 之外的触控操作

OutsideCapture.xaml


<phone:PhoneApplicationPage      x:Class="Demo.Input.Touch.OutsideCapture"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"     FontFamily="{StaticResource PhoneFontFamilyNormal}"     FontSize="{StaticResource PhoneFontSizeNormal}"     Foreground="{StaticResource PhoneForegroundBrush}"     SupportedOrientations="Portrait" Orientation="Portrait"     mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"     shell:SystemTray.IsVisible="True">      <Grid x:Name="LayoutRoot" Background="Transparent">                  <Rectangle Name="rect" Width="100" Height="100" Fill="Red"                     MouseLeftButtonDown="rect_MouseLeftButtonDown"                     MouseLeftButtonUp="rect_MouseLeftButtonUp"                    MouseMove="rect_MouseMove" />          <TextBlock Name="lblMsg" VerticalAlignment="Top" TextWrapping="Wrap" Text="用手指触摸红色方块,然后将手指移除红色方块区域" />              </Grid>      </phone:PhoneApplicationPage>


OutsideCapture.xaml.cs


/*  * 演示如何在 UIElement 外响应 UIElement 上的触控事件  *   * UIElement - UI 元素  *     CaptureMouse() - 捕获外部触摸事件,这样即使触摸事件在 UIElement 之外也可以响应  *     ReleaseMouseCapture() - 取消外部触摸事件的捕获  *       * 注:  * 调用 UIElement 的 CaptureMouse() 方法需要满足以下条件  * 1、当前没有任何 UIElement 正在捕获中  * 2、必须在 UIElement 的 MouseLeftButtonDown 事件中调用 CaptureMouse() 方法  */  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 Microsoft.Phone.Controls;  namespace Demo.Input.Touch {     public partial class OutsideCapture : PhoneApplicationPage     {         public OutsideCapture()         {             InitializeComponent();         }          private void rect_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)         {             rect.CaptureMouse();              lblMsg.Text = "触摸点坐标为:" + e.GetPosition(LayoutRoot).ToString();         }          private void rect_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)         {             rect.ReleaseMouseCapture();         }          private void rect_MouseMove(object sender, MouseEventArgs e)         {             // 调用了 rect.CaptureMouse() 之后,即使触控移出 rect 也可以响应触控事件             lblMsg.Text = "触摸点坐标为:" + e.GetPosition(LayoutRoot).ToString();         }     } }


2、演示如何通过 Silverlight 捕获手势操作

ManipulationDemo.xaml


<phone:PhoneApplicationPage      x:Class="Demo.Input.Touch.ManipulationDemo"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"     FontFamily="{StaticResource PhoneFontFamilyNormal}"     FontSize="{StaticResource PhoneFontSizeNormal}"     Foreground="{StaticResource PhoneForegroundBrush}"     SupportedOrientations="Portrait" Orientation="Portrait"     mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"     shell:SystemTray.IsVisible="True">      <Grid x:Name="LayoutRoot" Background="Transparent">         <StackPanel Orientation="Vertical">                          <TextBlock Text="请随便做一些手势操作,以查看演示效果" />                          <TextBlock Name="lblMsg" />                      </StackPanel>     </Grid>  </phone:PhoneApplicationPage>


ManipulationDemo.xaml.cs


/*  * 演示如何在 Silverlight 下捕获手势操作  *   * UIElement - UI 元素  *     ManipulationStarted - 手势操作开始时触发的事件,即触摸屏幕时触发的事件(事件参数:ManipulationStartedEventArgs)  *     ManipulationDelta - 手势操作过程中触发的事件(事件参数:ManipulationDeltaEventArgs)  *     ManipulationCompleted - 手持操作完成时触发的事件(事件参数:ManipulationCompletedEventArgs)  *       *   * ManipulationStartedEventArgs  *     ManipulationContainer - 手势操作的容器,即坐标的参照物  *     ManipulationOrigin - 手势起始点坐标  *     Complete() - 停止捕获手势操作,即不会再触发 ManipulationDelta 事件  *   * ManipulationDeltaEventArgs  *     ManipulationContainer - 手势操作的容器,即坐标的参照物  *     ManipulationOrigin - 当前手势的中心点坐标  *     Complete() - 停止捕获手势操作,即不会再触发 ManipulationDelta 事件  *     DeltaManipulation.Scale - 最近一次缩放比的变化  *     DeltaManipulation.Translation - 最近一次位移的变化  *     CumulativeManipulation.Scale - 缩放比的累计的变化  *     CumulativeManipulation.Translation - 位移的累计的变化  *   * ManipulationCompletedEventArgs  *     ManipulationContainer - 手势操作的容器,即坐标的参照物  *     ManipulationOrigin - 当前手势的中心点坐标  *     TotalManipulation.Scale - 缩放比的总计变化  *     TotalManipulation.Translation - 位移的总计变化  *     IsInertial - 手势操作收尾时是否有惯性  *     FinalVelocities.LinearVelocity - 如果手势操作收尾时有惯性,则此属性会返回其线性速度  */  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 Microsoft.Phone.Controls;  namespace Demo.Input.Touch {     public partial class ManipulationDemo : PhoneApplicationPage     {         public ManipulationDemo()         {             InitializeComponent();                          // 注册相关手势事件             LayoutRoot.ManipulationStarted += new EventHandler<ManipulationStartedEventArgs>(LayoutRoot_ManipulationStarted);             LayoutRoot.ManipulationDelta += new EventHandler<ManipulationDeltaEventArgs>(LayoutRoot_ManipulationDelta);             LayoutRoot.ManipulationCompleted += new EventHandler<ManipulationCompletedEventArgs>(LayoutRoot_ManipulationCompleted);         }          void LayoutRoot_ManipulationStarted(object sender, ManipulationStartedEventArgs e)         {             lblMsg.Text = string.Format("手势起始点坐标 - x: {0},y: {1}", e.ManipulationOrigin.X, e.ManipulationOrigin.Y);         }          void LayoutRoot_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)         {             lblMsg.Text = string.Format("当前手势的中心点坐标 - x: {0},y: {1}", e.ManipulationOrigin.X, e.ManipulationOrigin.Y);             lblMsg.Text += Environment.NewLine;              lblMsg.Text += "缩放比最近的变化:" + e.DeltaManipulation.Scale.ToString();             lblMsg.Text += Environment.NewLine;             lblMsg.Text += "位移最近的变化" + e.DeltaManipulation.Translation.ToString();             lblMsg.Text += Environment.NewLine;              lblMsg.Text += "缩放比总共的变化:" + e.CumulativeManipulation.Scale.ToString();             lblMsg.Text += Environment.NewLine;             lblMsg.Text += "位移总共的变化:" + e.CumulativeManipulation.Translation.ToString();             lblMsg.Text += Environment.NewLine;         }          void LayoutRoot_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)         {             lblMsg.Text = string.Format("当前手势的中心点坐标 - x: {0},y: {1}", e.ManipulationOrigin.X, e.ManipulationOrigin.Y);             lblMsg.Text += Environment.NewLine;              lblMsg.Text += "缩放比总共的变化:" + e.TotalManipulation.Scale.ToString();             lblMsg.Text += Environment.NewLine;             lblMsg.Text += "位移总共的变化:" + e.TotalManipulation.Translation.ToString();             lblMsg.Text += Environment.NewLine;              lblMsg.Text += "手势操作收尾时是否有惯性:" + e.IsInertial.ToString();             lblMsg.Text += Environment.NewLine;              lblMsg.Text += "如果手势操作收尾时有惯性,其速度为:" + e.FinalVelocities.LinearVelocity.ToString();         }     } }


3、演示如何通过 XNA 捕获手势操作

XNAGesture.xaml


<phone:PhoneApplicationPage      x:Class="Demo.Input.Touch.XNAGesture"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"     FontFamily="{StaticResource PhoneFontFamilyNormal}"     FontSize="{StaticResource PhoneFontSizeNormal}"     Foreground="{StaticResource PhoneForegroundBrush}"     SupportedOrientations="Portrait" Orientation="Portrait"     mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"     shell:SystemTray.IsVisible="True">      <Grid x:Name="LayoutRoot" Background="Transparent">         <StackPanel Orientation="Vertical">              <TextBlock Text="请随便做一些手势操作,以查看演示效果" />              <TextBlock Name="lblMsg" TextWrapping="Wrap" />          </StackPanel>     </Grid>  </phone:PhoneApplicationPage>


XNAGesture.xaml.cs


/*  * 演示如何在 XNA 下捕获手势操作  *   * TouchPanel - 触摸面板  *     DisplayOrientation - 显示方向(Microsoft.Xna.Framework.DisplayOrientation 枚举)  *         Default, LandscapeLeft, LandscapeRight, Portrait  *     DisplayWidth - 宽  *     DisplayHeight - 高  *     IsGestureAvailable - 当前是否存在有效的手势操作  *     EnabledGestures - 指定需要捕获的手势操作类型(Microsoft.Xna.Framework.Input.Touch.GestureType 枚举)  *         None, Tap, DoubleTap, Hold, HorizontalDrag, VerticalDrag, FreeDrag, Pinch, Flick, DragComplete, PinchComplete  *     GetCapabilities() - 返回 TouchPanelCapabilities 类型对象  *     ReadGesture() - 返回 GestureSample 类型对象  *       *   * TouchPanelCapabilities - 触摸板的能力  *     IsConnected - 触摸板是否有效  *     MaximumTouchCount - 触摸板可以同时捕获的最大点数,即最大支持几点触摸  *       * GestureSample - 手势信息  *     GestureType - 手势操作类型  *     Position - 两点手势操作时,第一点的位置  *     Position2 - 两点手势操作时,第二点的位置  *     Delta - 两点手势操作时,第一点的位移的最近变化值  *     Delta2  - 两点手势操作时,第二点的位移的最近变化值  *     Timestamp - 此手势开始的时间戳(此值为系统自上次启动以来到此手势开始时所经过的时间)  */  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 Microsoft.Phone.Controls;  using Microsoft.Xna.Framework.Input.Touch;  namespace Demo.Input.Touch {     public partial class XNAGesture : PhoneApplicationPage     {         public XNAGesture()         {             InitializeComponent();              // 在手势操作完成后获取相关的手势信息             LayoutRoot.ManipulationCompleted += new EventHandler<ManipulationCompletedEventArgs>(LayoutRoot_ManipulationCompleted);              TouchPanelCapabilities tpc = TouchPanel.GetCapabilities();             lblMsg.Text = "触摸板是否有效:" + tpc.IsConnected;             lblMsg.Text += Environment.NewLine;             lblMsg.Text += "触摸板最大支持 " + tpc.MaximumTouchCount + " 点触摸";             lblMsg.Text += Environment.NewLine;              // 指定需要捕获的手势类型(只有指定的类型才能捕获到)             TouchPanel.EnabledGestures = GestureType.Tap | GestureType.DoubleTap | GestureType.Hold | GestureType.HorizontalDrag | GestureType.VerticalDrag | GestureType.FreeDrag | GestureType.Pinch | GestureType.Flick | GestureType.DragComplete | GestureType.PinchComplete;         }          // 当一次手势操作完成后,获取此次手势操作包含的全部手势信息         void LayoutRoot_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)         {             /*              * 由于一次手势操作可能会有多个手势信息,所以这里要一直输出手势信息直至没有有效的手势为止              * 这里的一次手势操作指的是手指按下到抬起后,这期间可能会有多个手势信息(比如一次手势操作可能会由多个水平移动、多个垂直移动等组成)              * 可以在每一帧当 TouchPanel.IsGestureAvailable 有效时都获取一下 TouchPanel.ReadGesture(),这样就可以即时获取到当前手势信息              */             while (TouchPanel.IsGestureAvailable)             {                 GestureSample gs = TouchPanel.ReadGesture();                  lblMsg.Text += gs.GestureType.ToString() + ",";             }         }     } }


4、演示如何响应多点触控

MutiTouch.xaml


<phone:PhoneApplicationPage      x:Class="Demo.Input.Touch.MutiTouch"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"     FontFamily="{StaticResource PhoneFontFamilyNormal}"     FontSize="{StaticResource PhoneFontSizeNormal}"     Foreground="{StaticResource PhoneForegroundBrush}"     SupportedOrientations="Portrait" Orientation="Portrait"     mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"     shell:SystemTray.IsVisible="True">      <Grid x:Name="LayoutRoot" Background="Transparent">         <StackPanel Orientation="Vertical">                          <TextBlock Text="请多点触摸此屏幕,以查看演示效果" />                          <TextBlock Name="lblMsg" />          </StackPanel>     </Grid>  </phone:PhoneApplicationPage>


MutiTouch.xaml.cs


/*  * 演示系统对多点触摸的支持  *   *   * TouchPanel - 触摸面板  *     GetState() - 返回触摸面板上,被触摸的所有点的状态(TouchCollection 类型)  *   * TouchCollection - 触摸点的集合(TouchLocation 的集合)  *   * TouchLocation - 触摸点  *     Position - 触摸点的坐标  *     State - 触摸点的状态(TouchLocationState 类型)  *       * TouchLocationState - 触摸点状态(Microsoft.Xna.Framework.Input.Touch.TouchLocationState 枚举)  *     Invalid - 无效  *     Released - 被释放  *     Pressed - 被触摸,即一个新的触摸点  *     Moved - 被触摸后移动  *       *   * 注:目前只支持 4 点触摸  */  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 Microsoft.Phone.Controls;  using System.Windows.Navigation; using Microsoft.Xna.Framework.Input.Touch;  namespace Demo.Input.Touch {     public partial class MutiTouch : PhoneApplicationPage     {         public MutiTouch()         {             InitializeComponent();         }          protected override void OnNavigatedTo(NavigationEventArgs e)         {             CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);         }          void CompositionTarget_Rendering(object sender, EventArgs e)         {             this.Dispatcher.BeginInvoke(delegate             {                 lblMsg.Text = "";             });              // 获取当前触摸点集合             TouchCollection touchLocations = TouchPanel.GetState();             for (int i = 0; i < touchLocations.Count; i++)             {                 TouchLocation touchLocation = touchLocations[i];                  float x = touchLocation.Position.X;                 float y = touchLocation.Position.Y;                  // 显示每个触摸点的坐标及状态                 this.Dispatcher.BeginInvoke(new InvokeUIWidthParameterDelegate(ShowMessage), i, x, y, touchLocation.State);             }         }          void ShowMessage(int i, float x, float y, TouchLocationState state)         {             lblMsg.Text += string.Format("触摸点{0}坐标 - X: {1},Y: {2},状态: {3}", i, x, y, state.ToString());             lblMsg.Text += Environment.NewLine;         }          private delegate void InvokeUIWidthParameterDelegate(int i, float x, float y, TouchLocationState state);     } }



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