From 5300e78e2a72578fed911884a0beda922f749d55 Mon Sep 17 00:00:00 2001
From: jonteohr <jonathan.ohrstrom@saabgroup.com>
Date: Mon, 22 Apr 2024 14:51:31 +0200
Subject: [PATCH] Added the TyperLabel control

---
 ExampleApp/MainWindow.xaml           | 42 +++++++------
 ExampleApp/MainWindow.xaml.cs        | 67 +-------------------
 GradientTheme/Controls/TyperLabel.cs | 94 ++++++++++++++++++++++++++++
 3 files changed, 117 insertions(+), 86 deletions(-)
 create mode 100644 GradientTheme/Controls/TyperLabel.cs

diff --git a/ExampleApp/MainWindow.xaml b/ExampleApp/MainWindow.xaml
index 5f86be5..59ed0ab 100644
--- a/ExampleApp/MainWindow.xaml
+++ b/ExampleApp/MainWindow.xaml
@@ -3,6 +3,8 @@
         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"
+        xmlns:controls="clr-namespace:GradientTheme.Controls;assembly=GradientTheme"
+        xmlns:sys="clr-namespace:System;assembly=mscorlib"
         mc:Ignorable="d"
         Title="MyApp" Height="450" Width="800"
         MouseDown="MainWindow_OnMouseDown"
@@ -47,31 +49,31 @@
                 </Grid>
                 <!-- .Toolbar Grid -->
                 
-                <!-- ContentGrid -->
+                <!-- Title header -->
                 <Grid Grid.Row="1">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="10*" />
+                        <ColumnDefinition Width="70*" />
+                        <ColumnDefinition Width="20*" />
+                    </Grid.ColumnDefinitions>
                     <Grid.RowDefinitions>
-                        <RowDefinition Height="10*" />
-                        <RowDefinition Height="60*" />
-                        <RowDefinition Height="30*" />
+                        <RowDefinition Height="*" />
+                        <RowDefinition Height="*" />
                     </Grid.RowDefinitions>
-                    <!-- Title header -->
-                    <Grid Grid.Row="1">
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="10*" />
-                            <ColumnDefinition Width="70*" />
-                            <ColumnDefinition Width="20*" />
-                        </Grid.ColumnDefinitions>
-                        <Grid.RowDefinitions>
-                            <RowDefinition Height="*" />
-                            <RowDefinition Height="*" />
-                        </Grid.RowDefinitions>
-                        
-                        <Label Grid.Column="1" Content="{Binding Path=WindowTitle}" Name="TitleLabel" Style="{DynamicResource TitleStyle}" />
-                        <Label Grid.Row="1" Grid.Column="1" Content="A nice subdescription" Style="{DynamicResource SubheaderStyle}" />
-                    </Grid>
                     
+                    <controls:TyperLabel Grid.Row="0" Grid.Column="1" Style="{DynamicResource TitleStyle}" >
+                        <!-- Important that we supply at least one title, if not we will crash! -->
+                        <controls:TyperLabel.Titles>
+                            <x:Array Type="{x:Type sys:String}">
+                                <sys:String>One Title</sys:String>
+                                <sys:String>Another Title</sys:String>
+                                <sys:String>Great Title</sys:String>
+                            </x:Array>
+                        </controls:TyperLabel.Titles>
+                    </controls:TyperLabel>
+                    
+                    <Label Grid.Row="1" Grid.Column="1" Content="A nice subdescription" Style="{DynamicResource SubheaderStyle}" />
                 </Grid>
-            
             </Grid>
         </DockPanel>
     </Border>
diff --git a/ExampleApp/MainWindow.xaml.cs b/ExampleApp/MainWindow.xaml.cs
index 4cc0ace..c62083f 100644
--- a/ExampleApp/MainWindow.xaml.cs
+++ b/ExampleApp/MainWindow.xaml.cs
@@ -21,65 +21,11 @@ public partial class MainWindow : Window
     [DllImport("user32.dll")]
     private static extern IntPtr GetForegroundWindow();
 
-    private int m_typeSpeed = 150;
-    private int m_timerspeed = 3;
-    private bool m_typing;
-    
-    public string WindowTitle { get; private set; }
-    private string[] Titles = 
-        [
-            "A nice app",
-            "App title",
-            "Cool title",
-            "Useful stuff!",
-            "This title changes",
-            "Captivating title",
-            "Lorem ipsum"
-        ];
-
     public MainWindow()
     {
-        WindowTitle = GetRandomTitle();
-        
         InitializeComponent();
-        DataContext = this;
         
-        var timer = new Timer();
-        timer.Interval = m_timerspeed * 1000;
-        timer.AutoReset = true;
-        timer.Elapsed += TimerOnElapsed;
-        timer.Enabled = true;
-        timer.Start();
-    }
-
-    private void TimerOnElapsed(object? sender, ElapsedEventArgs e)
-    {
-        while (!m_typing)
-        {
-            m_typing = true;
-            for (var i = WindowTitle.Length - 1; i < WindowTitle.Length; i--)
-            {
-                if (i < 0)
-                    break;
-            
-                WindowTitle = WindowTitle.Remove(i);
-                SafeThreadInvoker(() => TitleLabel.Content = WindowTitle);
-                Thread.Sleep(m_typeSpeed);
-            }
-
-            WindowTitle = GetRandomTitle();
-
-            for (var i = 0; i <= WindowTitle.Length; i++)
-            {
-                var tmp = WindowTitle.Substring(0, i);
-                SafeThreadInvoker(() => TitleLabel.Content = tmp);
-                Thread.Sleep(m_typeSpeed);
-            }
-
-            break;
-        }
-        
-        m_typing = false;
+        DataContext = this;
     }
 
     private void CloseBtn_OnClick(object sender, RoutedEventArgs e)
@@ -108,15 +54,4 @@ private void SafeThreadInvoker(Action a)
         else
             a();
     }
-
-    private string GetRandomTitle()
-    {
-        var rand = new Random();
-
-        var generated = Titles[rand.Next(0, Titles.Length)];
-        while (generated == WindowTitle)
-            generated = Titles[rand.Next(0, Titles.Length)];
-
-        return generated;
-    }
 }
\ No newline at end of file
diff --git a/GradientTheme/Controls/TyperLabel.cs b/GradientTheme/Controls/TyperLabel.cs
new file mode 100644
index 0000000..602ce25
--- /dev/null
+++ b/GradientTheme/Controls/TyperLabel.cs
@@ -0,0 +1,94 @@
+using System.Timers;
+using Timer = System.Timers.Timer;
+using System.Windows.Controls;
+using System.Windows.Data;
+
+namespace GradientTheme.Controls;
+
+public class TyperLabel : Label
+{
+    private const int TypeSpeed = 150;
+    private const int TimerSpeed = 3;
+    private bool m_typing;
+    private string WindowTitle { get; set; }
+    private string m_lastTitle;
+    
+    private string[] m_titles;
+    public string[] Titles
+    {
+        get => m_titles;
+        set
+        {
+            m_titles = value;
+            Content = WindowTitle = GetRandomTitle();
+        }
+    }
+    
+    public TyperLabel()
+    {
+        var binding = new Binding("WindowTitle");
+        BindingOperations.SetBinding(this, TyperLabel.ContentProperty, binding);
+        
+        var timer = new Timer();
+        timer.Interval = TimerSpeed * 1000;
+        timer.AutoReset = true;
+        timer.Elapsed += TimerOnElapsed;
+        timer.Enabled = true;
+        timer.Start();
+    }
+    
+    private void TimerOnElapsed(object? sender, ElapsedEventArgs e)
+    {
+        while (!m_typing)
+        {
+            m_typing = true;
+
+            m_lastTitle = WindowTitle;
+            
+            for (var i = WindowTitle.Length - 1; i < WindowTitle.Length; i--)
+            {
+                if (i < 0)
+                    break;
+        
+                WindowTitle = WindowTitle.Remove(i);
+                SafeThreadInvoker(() => Content = WindowTitle);
+                Thread.Sleep(TypeSpeed);
+            }
+
+            WindowTitle = GetRandomTitle();
+
+            for (var i = 0; i <= WindowTitle.Length; i++)
+            {
+                var tmp = WindowTitle.Substring(0, i);
+                SafeThreadInvoker(() => Content = tmp);
+                Thread.Sleep(TypeSpeed);
+            }
+
+            break;
+        }
+        
+        m_typing = false;
+    }
+    
+    private void SafeThreadInvoker(Action a)
+    {
+        if (!CheckAccess())
+            Dispatcher.Invoke(a);
+        else
+            a();
+    }
+    
+    private string GetRandomTitle()
+    {
+        var rand = new Random();
+
+        string generated;
+        do
+        {
+            generated = Titles[rand.Next(0, Titles.Length)];
+        }
+        while (generated == m_lastTitle);
+
+        return generated;
+    }
+}
\ No newline at end of file