From 782f473f86a0acaee093363d67fa290332e3e013 Mon Sep 17 00:00:00 2001
From: Kemal Setya Adhi <dev.kemalsetyaa@gmail.com>
Date: Mon, 12 Sep 2022 15:53:38 +0700
Subject: [PATCH] Add an ability to pause Image Carousel when hovered

---
 .../XAMLs/MainApp/Pages/HomePage.xaml         | 31 +++++-----
 .../XAMLs/MainApp/Pages/HomePage.xaml.cs      | 60 ++++++++++---------
 2 files changed, 48 insertions(+), 43 deletions(-)

diff --git a/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml b/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml
index b8908b7da..57b7bfb7f 100644
--- a/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml
+++ b/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml
@@ -183,8 +183,11 @@
                                 Margin="0,148,0,0" Orientation="Vertical" HorizontalAlignment="Left">
                             <StackPanel HorizontalAlignment="Left">
                                 <FlipView x:Name="ImageCarousel" Shadow="{StaticResource SharedShadow}" Visibility="Collapsed"
-                            MaxWidth="414" Height="192" 
-                            CornerRadius="8" ItemsSource="{x:Bind MenuPanels.imageCarouselPanel}" HorizontalAlignment="Center">
+                                  MaxWidth="414" Height="192" 
+                                  CornerRadius="8" ItemsSource="{x:Bind MenuPanels.imageCarouselPanel}"
+                                  HorizontalAlignment="Center"
+                                  PointerEntered="CarouselStopScroll"
+                                  PointerExited="CarouselRestartScroll">
                                     <FlipView.ItemTemplate>
                                         <DataTemplate>
                                             <Image Source="{Binding Icon}" Tag="{Binding URL}" ToolTipService.ToolTip="{Binding Description}" PointerPressed="OpenImageLinkFromTag"/>
@@ -192,19 +195,19 @@
                                     </FlipView.ItemTemplate>
                                 </FlipView>
                                 <Grid x:Name="ImageCarouselPipsPager"
-                              Padding="4,4" Margin="10,-14,10,0" CornerRadius="8"
-                              Shadow="{StaticResource SharedShadow}"
-                              Background="{StaticResource CarouselPipsAcrylicBrush}"
-                              HorizontalAlignment="Right" Visibility="Collapsed"
-                              VerticalAlignment="Center">
+                                  Padding="4,4" Margin="10,-14,10,0" CornerRadius="8"
+                                  Shadow="{StaticResource SharedShadow}"
+                                  Background="{StaticResource CarouselPipsAcrylicBrush}"
+                                  HorizontalAlignment="Right" Visibility="Collapsed"
+                                  VerticalAlignment="Center">
                                     <PipsPager
-                                  Margin="0,0,0,0"
-                                  VerticalAlignment="Center"
-                                  PreviousButtonVisibility="Visible"
-                                  NextButtonVisibility="Visible"
-                                  NumberOfPages="{x:Bind MenuPanels.imageCarouselPanel.Count}"
-                                  SelectedPageIndex="{x:Bind Path=ImageCarousel.SelectedIndex, Mode=TwoWay}"
-                                  Orientation="Horizontal"/>
+                                      Margin="0,0,0,0"
+                                      VerticalAlignment="Center"
+                                      PreviousButtonVisibility="Visible"
+                                      NextButtonVisibility="Visible"
+                                      NumberOfPages="{x:Bind MenuPanels.imageCarouselPanel.Count}"
+                                      SelectedPageIndex="{x:Bind Path=ImageCarousel.SelectedIndex, Mode=TwoWay}"
+                                      Orientation="Horizontal"/>
                                 </Grid>
                             </StackPanel>
                             <Grid x:Name="PostPanel" Padding="8" Width="414" Visibility="Collapsed"
diff --git a/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml.cs b/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml.cs
index 9f2f2949d..221c134ec 100644
--- a/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml.cs
+++ b/CollapseLauncher/XAMLs/MainApp/Pages/HomePage.xaml.cs
@@ -67,8 +67,6 @@ public HomePage()
                     ImageCarousel.Translation += Shadow48;
                     ImageCarouselPipsPager.Translation += Shadow16;
                     PostPanel.Translation += Shadow16;
-
-                    Task.Run(() => StartCarouselAutoScroll(PageToken.Token));
                 }
 
                 if (!GetAppConfigValue("ShowEventsPanel").ToBool())
@@ -80,6 +78,7 @@ public HomePage()
 
                 CheckFailedDeltaPatchState();
                 CheckRunningGameInstance();
+                StartCarouselAutoScroll(PageToken.Token);
             }
             catch (Exception ex)
             {
@@ -88,43 +87,46 @@ public HomePage()
             }
         }
 
-        private async void TryLoadEventPanelImage()
+        private void TryLoadEventPanelImage()
         {
             if (regionNewsProp.eventPanel == null) return;
 
-            await Task.Run(() =>
-            {
-                DispatcherQueue.TryEnqueue(() =>
-                {
-                    ImageEventImgGrid.Visibility = Visibility.Visible;
-                    ImageEventImg.Source = new BitmapImage(new Uri(regionNewsProp.eventPanel.icon));
-                    ImageEventImg.Tag = regionNewsProp.eventPanel.url;
-                });
-            });
+            ImageEventImgGrid.Visibility = Visibility.Visible;
+            ImageEventImg.Source = new BitmapImage(new Uri(regionNewsProp.eventPanel.icon));
+            ImageEventImg.Tag = regionNewsProp.eventPanel.url;
         }
 
         public async void ResetLastTimeSpan() => await Task.Run(() => LastTimeSpan = Stopwatch.StartNew());
-        private void StartCarouselAutoScroll(CancellationToken token = new CancellationToken(), int delay = 5)
+        private async void StartCarouselAutoScroll(CancellationToken token = new CancellationToken(), int delay = 5)
         {
-            DispatcherQueue.TryEnqueue(async () =>
+            if (regionNewsProp.eventPanel == null) return;
+            try
             {
-                try
+                while (true)
                 {
-                    while (true)
-                    {
-                        await Task.Delay(delay * 1000, token);
-                        if (ImageCarousel.SelectedIndex != MenuPanels.imageCarouselPanel.Count - 1)
-                            ImageCarousel.SelectedIndex++;
-                        else
-                            for (int i = MenuPanels.imageCarouselPanel.Count; i > 0; i--)
-                            {
-                                ImageCarousel.SelectedIndex = i - 1;
-                                await Task.Delay(100, token);
-                            }
-                    }
+                    await Task.Delay(delay * 1000, token);
+                    if (ImageCarousel.SelectedIndex != MenuPanels.imageCarouselPanel.Count - 1)
+                        ImageCarousel.SelectedIndex++;
+                    else
+                        for (int i = MenuPanels.imageCarouselPanel.Count; i > 0; i--)
+                        {
+                            ImageCarousel.SelectedIndex = i - 1;
+                            await Task.Delay(100, token);
+                        }
                 }
-                catch (Exception) { }
-            });
+            }
+            catch (Exception) { }
+        }
+
+        private void CarouselStopScroll(object sender, PointerRoutedEventArgs e)
+        {
+            PageToken.Cancel();
+        }
+
+        private void CarouselRestartScroll(object sender, PointerRoutedEventArgs e)
+        {
+            PageToken = new CancellationTokenSource();
+            StartCarouselAutoScroll(PageToken.Token);
         }
 
         private void FadeInSocMedButton(object sender, PointerRoutedEventArgs e)