Windows的简单WPF文本时钟小工具-开课吧广场

这是WindowsPresentationFoundation（WPF）的简单的基于文本的时钟小工具，其中时间以一组突出显示的字符显示在静态字符网格上。

背景

你们中的许多人一定已经看到了许多基于文本的时钟的变体。因此，我认为如果以台式机小工具的形式拥有它，那就太好了。由于我只是WPF（以及C＃）的初学者，因此任何形式的建议都将受到欢迎。

使用代码

负责生成基于文本的当前时间的函数如下：

string TextTime = String.Empty; // for holding the text-time
static Dictionary<int, string> Mapping; // maps numbers with the corresponding text;
// e.g. 9 -> "NINE"

private string GetTextTime()
{
    TextTime = "IT IS ";
    Now = DateTime.Now;
    int sec = Now.Second;
    int min = Now.Minute;
    int hour = Now.Hour;

    if (min < 5)
        TextTime += GetStringValue(hour) + " OCLOCK";
    else if (min < 10)
        TextTime += "FIVE MINUTES PAST " + GetStringValue(hour);
    else if (min < 15)
        TextTime += "TEN MINUTES PAST " + GetStringValue(hour);
    else if (min < 20)
        TextTime += "A QUARTER PAST " + GetStringValue(hour);
    else if (min < 25)
        TextTime += "TWENTY MINUTES PAST " + GetStringValue(hour);
    else if (min < 30)
        TextTime += "TWENTY FIVE MINUTES PAST " + GetStringValue(hour);
    else if (min < 35)
        TextTime += "A HALF PAST " + GetStringValue(hour);
    else if (min < 40)
        TextTime += "TWENTY FIVE MINUTES TO " + GetStringValue(hour + 1);
    else if (min < 45)
        TextTime += "TWENTY MINUTES TO " + GetStringValue(hour + 1);
    else if (min < 50)
        TextTime += "A QUARTER TO " + GetStringValue(hour + 1);
    else if (min < 55)
        TextTime += "TEN MINUTES TO " + GetStringValue(hour + 1);
    else
        TextTime += "FIVE MINUTES TO " + GetStringValue(hour + 1);

    return TextTime;
}

private static string GetStringValue(int n)
{
    n = n % 12;
    string value = (Mapping.Where(m => m.Key == n)).ToList()[0].Value;
    return value;
}

然后，我有一个char序列用于生成字符网格。

static string CHAR_SEQUENCE = 
  "ITRISRAOTENTWENTYPHALFQUARTERFIVEMINUTESXTOBPASTHONETWOTHREEELEVENFOURFIVESIXSEVENQEIGHTNINE
   JTWELVETENPCOCLOCK";

下面是我用来在TextBlock其中添加包含字符的s的网格的XAML标记。我正在使用几个函数分别将CHAR_SEQUENCE字符串转换为2D字符数组，并TextBlock在XAML网格中添加每个包含一个字符作为其字符的sText财产。

<Grid HorizontalAlignment="Left" Margin="0,0,0,0" 
          Name="grdChars" VerticalAlignment="Top">
    <Grid.BitmapEffect>
        <DropShadowBitmapEffect></DropShadowBitmapEffect>
    </Grid.BitmapEffect>
</Grid>

private static void FillCharGrid() // for converting CHAR_SEQUENCE into a 2D array
{
    var charArr = CHAR_SEQUENCE.ToCharArray();
    int j = 0;
    for (int i = 0; i < charArr.Length; i++, j++)
    {
        char c = charArr[i];
        CharGrid[i / 11, j % 11] = c;
    }
}

private void RenderCharGrid() // Render chars in 2D as separate TextBlocks
{
    FillCharGrid();
    int topMargin = 20;
    for (int i = 0; i < CharGrid.GetLength(0); i++)
    {
        int leftMargin = 0;
        for (int j = 0; j < CharGrid.GetLength(1); j++)
        {
            TextBlock txt = new TextBlock();
            txt.Name = "lbl" + i.ToString() + j.ToString();
            txt.Text = CharGrid[i, j].ToString();
            txt.FontFamily = new System.Windows.Media.FontFamily("Tahoma");
            txt.Height = 30;
            txt.HorizontalAlignment = HorizontalAlignment.Left;
            txt.TextAlignment = TextAlignment.Center;
            txt.Margin = new Thickness(leftMargin, topMargin, 0, 0);
            txt.VerticalAlignment = VerticalAlignment.Top;
            txt.Width = 35;
            txt.Foreground = new SolidColorBrush(Colors.DarkGray);
            txt.Opacity = 2;

            leftMargin += 20;
            grdChars.Children.Add(txt);
        }
        topMargin += 20;
    }
}

以下是我用来突出显示GetTextTime()方法当前生成的文本中的字符的方法。

private void HighlightTextTime(string time)
{
    UIElementCollection elements = grdChars.Children;
    var timeArr = time.Split(new char[] { ' ' });
    bool toBreak = false;

    bool isFlattenedWRTFive = IsFlattenedWRTFive(time);
    bool isFlattenedWRTTen = IsFlattenedWRTTen(time);
    int currentFive = 0; int currentTen = 0;

    foreach (var str in timeArr)
    {
        var arr = str.ToCharArray();
        List<textblock> labels = new List<textblock>();
        for (int i = 0; i < grdChars.Children.Count; i++)
        {
            if (toBreak)
            {
                toBreak = false;
                break;
            }
            TextBlock txt = elements[i] as TextBlock;
            if (txt.Opacity == 2)
                continue;
            bool flag = false;
            List<textblock> Reds = new List<textblock>();
            if (txt.Text.ToUpper().Equals(str[0].ToString().ToUpper()))
            {
                for (int j = 0; j < str.Length; j++)
                {
                    TextBlock txt_succ = elements[i + j] as TextBlock;
                    if (!txt_succ.Text.ToUpper().Equals(str[j].ToString().ToUpper()))
                    {
                        flag = false;
                        Reds.Clear();
                        break;
                    }
                    else
                    {
                        flag = true;
                        Reds.Add(txt_succ);
                    }
                }
                if (flag)
                {
                    if (str.ToUpper().Equals("FIVE") && !isFlattenedWRTFive && currentFive == 0)
                    {
                        currentFive = 1;
                        continue;
                    }
                    if (str.ToUpper().Equals("TEN") && !isFlattenedWRTTen && currentTen == 0)
                    {
                        currentTen = 1;
                        continue;
                    }
                    for (int p = 0; p < Reds.Count; p++)
                    {
                        Reds[p].Foreground = new SolidColorBrush(Colors.Red);
                        Reds[p].Opacity = 2;
                    }
                    toBreak = true;
                }
            }
        }
    }
}

由于有两个字符集分别对应“五个”和“十个”，因此我对诸如ITISFIVEMINUTESTOFIVE或的时间略有ITISTENMINUTESTOTWELVE了解。首先是几分钟，然后是几个小时。因此，我写了一个简单的方法来确定当前文本时间是否相对于strings是平坦的，FIVE或者TEN因为它们可以表示分钟或小时，并且如果是几个小时，我只是跳过了第一char组，string而使用了后面的一组。我知道这根本不是解决此问题的好方法，但效果很好。这是一个示例方法，用于检查文本时间是否在wrtstring“TEN”上变平：

private bool IsFlattenedWRTTen(string time)
{
    time = time.ToUpper();
    var tenCount = CountSubStrings(time, "TEN");
    if ((tenCount == 2 || tenCount == 0))
        return true;
    if (time.Contains("MINUTES"))
        if (time.IndexOf("TEN") < time.IndexOf("MINUTES"))
            return true;
    return false;
}

正如您可能指出的那样，现在这是退出繁重的处理，因为它每秒都要执行一次。因此，我使用了一个stringCURRENT_TEXT_TIME用于存储当前文本时间的。每秒之后，当生成新的文本时间时，首先将它与this进行比较string，如果它们不同，则会刷新突出显示的字符，并突出显示新的文本时间。

因此，这里是构造函数和timer_Tick()事件处理程序。

public MainWindow()
{
    InitializeComponent();
    InitializeComponent();
    RenderCharGrid();
    // return;
    Mapping = new Dictionary<int,>();
    FillMapping();
    timer = new DispatcherTimer();
    timer.Interval = TimeSpan.FromSeconds(1);
    timer.Tick += new EventHandler(timer_Tick);
    timer.Start();
}

private void timer_Tick(object sender, EventArgs e)
{
    string time = GetTextTime();

    if (CURRENT_TEXT_TIME.ToUpper().Equals(time.ToUpper()))
        return;
    CURRENT_TEXT_TIME = time;
    ResetCharGrid();
    HighlightTextTime(time);
}

最后但并非最不重要的一点是，由于我们要创建桌面小工具样式的应用程序，因此我们必须设置XAML窗口的一些属性，关闭小工具的按钮，最后设置一个Window_MouseLeftButtonDown()启用拖动小工具的处理程序。以下是窗口的XAML代码，“关闭”按钮Click事件处理程序和鼠标单击处理程序。

<Window x:Class="TextClock.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="TextClock by 007" Height="248" Width="253" 
	AllowsTransparency="True" 
	WindowStartupLocation="CenterScreen"
	WindowStyle="None" 
	Opacity="0.8" 
	Background="Black"
    MouseLeftButtonDown="Window_MouseLeftButtonDown" 
	ShowInTaskbar="False">

......

</window>

private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    this.DragMove();
}

private void Button_Click(object sender, RoutedEventArgs e)
{
    this.Close();
}

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