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); } }
OK
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