WPF开发经验-实现自带触控键盘的TextBox

一引入

项目有个新需求，当点击或触碰TextBox时，基于TextBox的相对位置，弹出一个自定义的Keyboard，如下图所示：

二 KeyboardControl

先实现一个自定义的KeyboardControl，它继承自Window。

Xaml代码如下：

<Window x:Class="WpfApp1.KeyboardControl"

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

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

        xmlns:local="clr-namespace:WpfApp1" AllowsTransparency="True" WindowStyle="None"

        ResizeMode="NoResize" Background="Transparent" Height="290" Width="668">

    <FrameworkElement.Resources>

        <ResourceDictionary>

            <Style TargetType="{x:Type Button}" x:Key="btnNum">

                <Setter Property="Width" Value="50"/>

                <Setter Property="Height" Value="50"/>

                <Setter Property="Margin" Value="0 0 5 5"/>

                <Setter Property="HorizontalContentAlignment" Value="Center" />

                <Setter Property="VerticalContentAlignment" Value="Center" />

                <Setter Property="Cursor" Value="Hand"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type Button}">

                            <Border Name="border" BorderBrush="#FF474747" BorderThickness="1" CornerRadius="6">

                                <Border.Background>

                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

                                        <GradientStop Color="#FFCCCCCC" />

                                        <GradientStop Color="WhiteSmoke" Offset="0.5" />

                                        <GradientStop Color="#FFCCCCCC" Offset="1" />

                                    </LinearGradientBrush>

                                </Border.Background>

                                <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"

                                    TextElement.Foreground="#333333" TextElement.FontSize="18" />

                            </Border>

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <Style TargetType="{x:Type Button}" x:Key="btnFunc">

                <Setter Property="HorizontalContentAlignment" Value="Center" />

                <Setter Property="VerticalContentAlignment" Value="Center" />

                <Setter Property="Width" Value="50"/>

                <Setter Property="Height" Value="50"/>

                <Setter Property="Margin" Value="0 0 5 5"/>

                <Setter Property="Foreground" Value="#333333"/>

                <Setter Property="Cursor" Value="Hand"/>

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate TargetType="{x:Type Button}">

                            <Border

                                Name="border"

                                BorderBrush="#FF565656"

                                BorderThickness="1"

                                CornerRadius="6"  Background="Orange">

                                <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"

                                    TextElement.Foreground="White" TextElement.FontSize="18" />

                            </Border>

                        </ControlTemplate>

                    </Setter.Value>

                </Setter>

            </Style>

            <local:CapsConverter x:Key="CapsConverter"/>

        </ResourceDictionary>

    </FrameworkElement.Resources>

    <Border Background="Gray" CornerRadius="6" BorderThickness="1" BorderBrush="#333333">

        <StackPanel Margin="5 10 5 5" >

            <Grid>

                <TextBox Name="tbValue" FontSize="28" Height="40"

                    Background="Transparent" BorderBrush="Silver" BorderThickness="1"

                    Foreground="White" HorizontalContentAlignment="Right"

                    SelectionChanged="tbValue_TextChanged"

                    TextChanged="tbValue_TextChanged" />

            </Grid>

            <WrapPanel  Orientation="Vertical" >

                <WrapPanel Margin="0 10 0 0">

                    <Button Content="1" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="2" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="3" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="4" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="5" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="6" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="7" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="8" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="9" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="0" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="-" Click="Button_Click"  Style="{StaticResource btnNum}" />

                    <Button Content="Del" Click="DELButton_Click"   Style="{StaticResource btnFunc}"  Margin="0 0 0 5"/>

                </WrapPanel>

                <WrapPanel Margin="25 0 0 0">

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=q}"

                            Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=w}"

                            Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=e}"

                            Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=r}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=t}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=y}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=u}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=i}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=o}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=p}"

                             Click="Button_Click"/>

                    <Button Content="Clear" Click="ClearButton_Click"  Style="{StaticResource btnFunc}"  />

                </WrapPanel>

                <WrapPanel Margin="45 0 0 0">

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=a}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=s}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=d}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=f}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=g}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=h}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=j}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=k}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=l}"

                             Click="Button_Click"/>

                    <Button Content="." Click="Button_Click"  Style="{StaticResource btnNum}" />

                </WrapPanel>

                <WrapPanel Margin="70 0 0 0">

                    <Button Content="A/a" Click="CapsButton_Click"  Style="{StaticResource btnFunc}"  />

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=z}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=x}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=c}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=v}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=b}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=n}"

                             Click="Button_Click"/>

                    <Button Style="{StaticResource btnNum}" Content="{Binding Path=Caps,RelativeSource={RelativeSource AncestorType={x:Type local:KeyboardControl}},Converter={StaticResource CapsConverter},ConverterParameter=m}"

                             Click="Button_Click"/>

                    <Button Content="Cancel" Click="CancelButton_Click" IsCancel="True" Style="{StaticResource btnFunc}" Width="70"  />

                    <Button Content="OK" Click="OKButton_Click" IsDefault="True" Style="{StaticResource btnFunc}" Width="70"  Margin="0 0 0 5"/>

                </WrapPanel>

            </WrapPanel>

        </StackPanel>

    </Border>

</Window>

后台代码如下：

public partial class KeyboardControl : Window

{

    private int TextIndex { get; set; }

    public string TextStr { get; private set; }//通过该属性，访问Keyboard的文本

    public KeyboardControl(string inputStr)//构造方式传入初始文本

    {

        InitializeComponent();

        TextStr = inputStr;

        tbValue.Text = inputStr;

        tbValue.Focus();

        tbValue.CaretIndex = inputStr.Length;

    }

    public static readonly DependencyProperty CapsProperty = DependencyProperty.Register(

       "Caps", typeof(bool), typeof(KeyboardControl), new PropertyMetadata(default(bool)));

    public bool Caps

    {

        get { return (bool)GetValue(CapsProperty); }

        set { SetValue(CapsProperty, value); }

    }

    private void Button_Click(object sender, RoutedEventArgs e)

    {

        Button button = (Button)sender;

        if (TextIndex == 0)

        {

            tbValue.Text += (string)button.Content;

        }

        else

        {

            tbValue.Text = tbValue.Text.Insert(TextIndex, (string)button.Content);

        }

    }

    private void tbValue_TextChanged(object sender, RoutedEventArgs e)

    {

        TextBox textBox = (TextBox)sender;

        TextIndex = textBox.CaretIndex;

    }

    private void ClearButton_Click(object sender, RoutedEventArgs e)

    {

        tbValue.Text = "";

    }

    private void DELButton_Click(object sender, RoutedEventArgs e)

    {

        if (tbValue.Text.Length > 0)

        {

            if (TextIndex == 0 && tbValue.Text.Length >= 1)

            {

                tbValue.Text = tbValue.Text.Remove(tbValue.Text.Length - 1, 1);

            }

            else if (TextIndex > 0)

            {

                tbValue.Text = tbValue.Text.Remove(TextIndex - 1, 1);

            }

        }

    }

    private void OKButton_Click(object sender, RoutedEventArgs e)

    {

        TextStr = tbValue.Text;

        DialogResult = true;

        Close();

    }

    private void CancelButton_Click(object sender, RoutedEventArgs e)

    {

        DialogResult = false;

        Close();

    }

    private void CapsButton_Click(object sender, RoutedEventArgs e)

    {

        Caps = !Caps;

    }

}

Xaml代码中用到了一个大小写的转换类：

public class CapsConverter : IValueConverter

{

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

    {

        if (parameter == null)

        {

            return "";

        }

        if (value == null)

        {

            return parameter.ToString();

        }

        if (value is bool b)

        {

            return b ? parameter.ToString().ToUpper() : parameter.ToString().ToLower();

        }

        else

        {

            return parameter.ToString();

        }

    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

    {

        throw new NotImplementedException();

    }

}

三 TouchTextBox

定义一个TouchTextBox的分部类。

public partial class TouchTextBox

{

    private Control hostControl;

    //OnClick方法调用时，通过Window.ShowDialog方法，打开KeyboardControl

    public void OnClick(object sender, MouseButtonEventArgs e)

    {

        if (sender is TextBox textBox)

        {

            hostControl = textBox;

            //计算KeyboardControl的位置，弹出KeyboardControl

            var text = Show(textBox.Text, textBox);

            //KeyboardControl关闭后，获取其文本值，赋值给TextBox

            if (!string.IsNullOrEmpty(text))

            {

                textBox.Text = text;

            }

            else

            {

                textBox.Text = string.Empty;

            }

        }

    }

    private string Show(string initValue, object sender = null)

    {

        var keyboard = new KeyboardControl(initValue);

        SetPosition(keyboard);

        bool result = keyboard.ShowDialog().Value;

        if (result)

        {

            return keyboard.TextStr;

        }

        else

        {

            return string.Empty;

        }

    }

    private void SetPosition(Window window)

    {

        Point point = hostControl.PointFromScreen(new Point(0.0, 0.0));

        double width = SystemParameters.WorkArea.Width;

        double height = SystemParameters.WorkArea.Height;

        if (-point.Y + hostControl.ActualHeight + 5.0 + window.Height < height)

        {

            window.Top = -point.Y + hostControl.ActualHeight + 5.0;

        }

        else

        {

            window.Top = -point.Y - window.Height - 5.0;

        }

        if (-point.X + window.Width < width)

        {

            window.Left = -point.X;

        }

        else

        {

            window.Left = -point.X - (window.Width - hostControl.ActualWidth);

        }

    }

}

添加一个名为TouchTextBox的资源字典。

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

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

                    x:Class="WpfApp1.TouchTextBox">

    <Style x:Key="TouchTextBox" TargetType="{x:Type TextBox}">

        <EventSetter Event="PreviewMouseLeftButtonDown" Handler="OnClick" />

    </Style>

</ResourceDictionary>

四效果展示

在App.Xaml中引入TouchTextBox.Xaml资源。

<Application x:Class="WpfApp1.App"

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

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

             xmlns:local="clr-namespace:WpfApp1"

             StartupUri="MainWindow.xaml">

    <Application.Resources>

        <ResourceDictionary>

            <ResourceDictionary.MergedDictionaries>

                <ResourceDictionary Source="/WpfApp1;component/TouchTextBox.xaml" />

            </ResourceDictionary.MergedDictionaries>

        </ResourceDictionary>

    </Application.Resources>

</Application>

MainWindow界面代码：

<Window x:Class="WpfApp1.MainWindow"

        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"

        Title="MainWindow" Height="800" Width="1200">

    <StackPanel>

        <TextBox Text="Pop up the keyboard after touching" Width="400" HorizontalAlignment="Left" 
　　　　　　　　　　FontSize="18" Margin="20,20"

                 Style="{StaticResource TouchTextBox}"/>

    </StackPanel>

</Window>

设置TextBox的Style为TouchTextBox，则该TextBox实现了自带触控键盘的效果。

以上。

WPF开发经验-实现自带触控键盘的TextBox的更多相关文章

WPF开发随笔收录-带递增递减按钮TextBox
一.前言今天分享一下如何实现带递增递减按钮的TextBox控件二.正文 1.之前的博客分享了一篇自定义XamlIcon控件的文章,这次就直接在那个项目的基础上实现今天这个自定义控件 2.首先添加两 ...
C# WPF 解压缩7zip文件带进度条 sevenzipsharp
vs2013附件 :http://download.csdn.net/detail/u012663700/7427461 C# WPF 解压缩7zip文件带进度条 sevenzipsharp W ...
忘带U盘了？？别急！一行python代码即可搞定文件传输
近日发现了python一个很有趣的功能,今天在这里给大伙儿做一下分享需求前提 1.想要拷贝电脑的文件到另一台电脑但是又没有U盘2.手机上想获取到存储在电脑的文件3.忘带U盘- 您也太丢三落四了吧,但 ...
wpf企业应用之带选项框的TreeView
wpf里面实现层次绑定主要使用HierarchicalDataTemplate,这里主要谈一谈带checkbox的treeview,具体效果见 wpf企业级开发中的几种常见业务场景. 先来看一下我的控 ...
WPF开发经验-实现Win10虚拟触摸键盘
一引入项目有个需求,需要实现纯触控操作进行键盘输入.项目部署在Win10系统上,考虑有两种方案来实现. 通过调用Win10自带的触摸键盘来实现: 通过WPF实现一个触摸键盘来实现: 二调用Win ...
WPF开发经验
UpdateSourceTrigger 0.在一个项目中在用到绑定的时候一直有一个问题,虽然设置了Mode=TwoWay,界面的值修改了,但是后天绑定的值没有变化.最终发现了问题,在于UpdateSo ...
基于<MediaElement>的WPF视频播放器（带部分特效）【2】
一.前言上回说到需要做放视频的使用向导,这两天公司里的老司机一直帮我答疑解惑,让这个任务变得挺顺的,真心感谢他们! 这次与[1]中的不同之处在于: (1)播放和暂停按钮集成在<Me ...
菜鸟学开店—自带U盘的打印机
本文旨在提供最简单.便宜.有效的解决方案,解决普通用户最困扰的问题.今天提供普通用户一个低价的小票打印机驱动安装解决方案相信很多用户都碰到过这种情况,电脑的重装了系统,打印机的驱动没有备份,要用打印 ...
WPF 重写微调自带的样式，ListView、DataGrid、TreeView等所有控件的默认样式
不知道各位在开发中有没有遇到这样的窘迫,开发一个UI,设计给出的效果图和自带的样式的区别很大,然后有的样式通过属性是修改不了的,比如TreeView的子项TreeViewItem,想完全透明背景色就做 ...

随机推荐

qbxt数学五一Day4
目录 1. 随机试验 2. 概率 1. 平凡 2. 条件概率 3. 期望习题 1 2 3 4 1. 随机试验定义: 不能预先确知结果试验之前可以预测所有可能结果或范围可以在相同条件下重复实验 ...
在Mac Os(苹果)上用手机抓包软件Charles抓取微信小程序中的高清无水印视频
原文转载自「刘悦的技术博客」https://v3u.cn/a_id_118 手机抓包是一名测试工程师常备的技能,比如我想查看一个接口请求的参数.返回值,还有移动设备上的http请求.https请求,这 ...
Javaweb-文件上传和邮件发送
1.文件上传新建空项目准备工作在maven仓库里下载commons io 和 commons fileupload两个jar包实用类介绍文件上传注意事项为保证服务器安全,上传文件应该放在外 ...
GitHub 主页美化设置教程
GitHub profile设置教程早些时候逛GitHub,就发现别人的主页特别的精美,当时没有空研究,前几天得空给安排了一下先看一下成品贴一个github上一个男人的主页下面这个是我的果然 ...
学习nginx的一点记录
一.nginx定义 Nginx是一款轻量级的.高性能的,具备HTTP.反向代理.负载均衡的web服务器,同时还提供IMAP/POP3/SMTP服务,其特点是占用内存少,并发能力强. 二.nginx基本 ...
CentOS7桥接模式上不了外网的配置
电脑VM10装了CentOS7后用NAT模式可以上网,但我想要的是桥接模式,因为我要用Xshell5进行远程访问.所以要 ifconfig 找到ip .那么为什么桥接模式上不了外网呢? 首先参考了 h ...
linux-0.11分析：init文件 main.c的第一个初始化函数mem_int 第四篇随笔
init文件夹 mian.c 参考 [github这个博主的厉害][ https://github.com/sunym1993/flash-linux0.11-talk ] 首先先看看这个mian. ...
浅拷贝工具类，快速将实体类属性值复制给VO
/** * 浅拷贝的工具类 */ public class PropertiesUtil { /** * 两个类,属性名一样的元素,复制成员. */ public static void copy(O ...
ss 显示unix 域的socket 缓冲区不正确
一个unix 域socket,平时我们用ss -auxp 来查看是否有数据在内核没有到用户态, [root@localhost unix]# ss -auxp |grep -i server.o u_ ...
Spring源码-入门
一.测试类 public class Main { public static void main(String[] args) { ApplicationContext applicationCon ...

WPF开发经验-实现自带触控键盘的TextBox

一 引入

二 KeyboardControl

三 TouchTextBox

四 效果展示

WPF开发经验-实现自带触控键盘的TextBox的更多相关文章

随机推荐

热门专题

一引入

四效果展示