From add6e2ac430652a96ff6fd1a72824796064e259f Mon Sep 17 00:00:00 2001
From: sr55 <sr55.hb@outlook.com>
Date: Fri, 15 Dec 2017 21:33:57 +0000
Subject: [PATCH] WinGui: Mouse Wheel can scroll previews.

---
 .../Interfaces/IStaticPreviewViewModel.cs     |  3 +++
 .../Interfaces/ISummaryViewModel.cs           |  3 +++
 .../ViewModels/StaticPreviewViewModel.cs      | 22 +++++++++++++++++++
 .../ViewModels/SummaryViewModel.cs            | 10 +++++++++
 .../HandBrakeWPF/Views/StaticPreviewView.xaml |  6 +----
 .../Views/StaticPreviewView.xaml.cs           | 15 +++++++++++++
 win/CS/HandBrakeWPF/Views/SummaryView.xaml    |  3 ++-
 win/CS/HandBrakeWPF/Views/SummaryView.xaml.cs | 15 +++++++++++++
 8 files changed, 71 insertions(+), 6 deletions(-)

diff --git a/win/CS/HandBrakeWPF/ViewModels/Interfaces/IStaticPreviewViewModel.cs b/win/CS/HandBrakeWPF/ViewModels/Interfaces/IStaticPreviewViewModel.cs
index 919a62170..06a22ae01 100644
--- a/win/CS/HandBrakeWPF/ViewModels/Interfaces/IStaticPreviewViewModel.cs
+++ b/win/CS/HandBrakeWPF/ViewModels/Interfaces/IStaticPreviewViewModel.cs
@@ -33,5 +33,8 @@ namespace HandBrakeWPF.ViewModels.Interfaces
         /// Gets or sets a value indicating whether is open.
         /// </summary>
         bool IsOpen { get; set; }
+
+        void PreviousPreview();
+        void NextPreview();
     }
 }
diff --git a/win/CS/HandBrakeWPF/ViewModels/Interfaces/ISummaryViewModel.cs b/win/CS/HandBrakeWPF/ViewModels/Interfaces/ISummaryViewModel.cs
index 8ed5deb78..67d51a823 100644
--- a/win/CS/HandBrakeWPF/ViewModels/Interfaces/ISummaryViewModel.cs
+++ b/win/CS/HandBrakeWPF/ViewModels/Interfaces/ISummaryViewModel.cs
@@ -19,5 +19,8 @@ namespace HandBrakeWPF.ViewModels.Interfaces
         event EventHandler<OutputFormatChangedEventArgs> OutputFormatChanged;
         void SetContainer(OutputFormat container);
         void UpdateDisplayedInfo();
+
+        void PreviousPreview();
+        void NextPreview();
     }
 }
\ No newline at end of file
diff --git a/win/CS/HandBrakeWPF/ViewModels/StaticPreviewViewModel.cs b/win/CS/HandBrakeWPF/ViewModels/StaticPreviewViewModel.cs
index 7359d2fd6..6f5fc6e5d 100644
--- a/win/CS/HandBrakeWPF/ViewModels/StaticPreviewViewModel.cs
+++ b/win/CS/HandBrakeWPF/ViewModels/StaticPreviewViewModel.cs
@@ -426,6 +426,27 @@ namespace HandBrakeWPF.ViewModels
         /// </summary>
         public bool IsOpen { get; set; }
 
+        public void NextPreview()
+        {
+            int maxPreview = this.userSettingService.GetUserSetting<int>(UserSettingConstants.PreviewScanCount);
+            if ((this.SelectedPreviewImage + 1) == maxPreview)
+            {
+                return;
+            }
+
+            this.SelectedPreviewImage = this.SelectedPreviewImage + 1;
+        }
+
+        public void PreviousPreview()
+        {
+            if (this.SelectedPreviewImage < 1)
+            {
+                return;
+            }
+
+            this.SelectedPreviewImage = this.SelectedPreviewImage - 1;
+        }
+
         /// <summary>
         ///     The update preview frame.
         /// </summary>
@@ -667,6 +688,7 @@ namespace HandBrakeWPF.ViewModels
             this.encodeService.Start(((QueueTask)state).Task, ((QueueTask)state).Configuration);
             this.userSettingService.SetUserSetting(UserSettingConstants.LastPreviewDuration, this.Duration);
         }
+
         #endregion
 
         #region Event Handlers
diff --git a/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs b/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs
index a0e4b2a78..90676cc0e 100644
--- a/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs
+++ b/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs
@@ -358,6 +358,11 @@ namespace HandBrakeWPF.ViewModels
         public void NextPreview()
         {
             int maxPreview = this.userSettingService.GetUserSetting<int>(UserSettingConstants.PreviewScanCount);
+            if (this.selectedPreview == maxPreview)
+            {
+                return;
+            }
+
             this.selectedPreview = this.selectedPreview + 1;
             this.UpdatePreviewFrame();
             this.PreviewInfo = string.Format(ResourcesUI.SummaryView_PreviewInfo, this.selectedPreview, maxPreview);
@@ -369,6 +374,11 @@ namespace HandBrakeWPF.ViewModels
         public void PreviousPreview()
         {
             int maxPreview = this.userSettingService.GetUserSetting<int>(UserSettingConstants.PreviewScanCount);
+            if (this.selectedPreview <= 1)
+            {
+                return;
+            }
+
             this.selectedPreview = this.selectedPreview - 1;
             this.UpdatePreviewFrame();
             this.PreviewInfo = string.Format(ResourcesUI.SummaryView_PreviewInfo, this.selectedPreview, maxPreview);
diff --git a/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml b/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml
index 517ae13f9..c7eb5fb09 100644
--- a/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml
+++ b/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml
@@ -21,7 +21,7 @@
             <TextBlock Text="No Preview Available" VerticalAlignment="Center" Padding="60,60,60,60" FontWeight="Bold" FontSize="25" Foreground="DarkGray" />
         </StackPanel>
 
-        <Image Source="{Binding PreviewImage}" MaxWidth="{Binding Width}" MaxHeight="{Binding Height}" />
+        <Image Source="{Binding PreviewImage}" MaxWidth="{Binding Width}" MaxHeight="{Binding Height}" MouseWheel="PreviewImage_OnMouseWheel" />
 
 
         <Border BorderBrush="WhiteSmoke" BorderThickness="1,1,1,1" CornerRadius="8,8,8,8" Padding="8"
@@ -63,10 +63,6 @@
                     <ProgressBar MinHeight="5" Maximum="100" Minimum="0" Value="{Binding PercentageValue}" Grid.Column="0" Grid.ColumnSpan="2" />
                     <TextBlock Margin="5,0,0,0" Text="{Binding Percentage}" Grid.Column="2" HorizontalAlignment="Right" Foreground="White" />
                 </Grid>
-
-
-
-
             </Grid>
 
         </Border>
diff --git a/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml.cs b/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml.cs
index 8c2c55991..17ef64928 100644
--- a/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml.cs
+++ b/win/CS/HandBrakeWPF/Views/StaticPreviewView.xaml.cs
@@ -10,6 +10,9 @@
 namespace HandBrakeWPF.Views
 {
     using System.Windows;
+    using System.Windows.Input;
+
+    using HandBrakeWPF.ViewModels.Interfaces;
 
     /// <summary>
     /// Interaction logic for StaticPreviewView.xaml
@@ -23,5 +26,17 @@ namespace HandBrakeWPF.Views
         {
             InitializeComponent();
         }
+
+        private void PreviewImage_OnMouseWheel(object sender, MouseWheelEventArgs e)
+        {
+            if (e.Delta > 1)
+            {
+                ((IStaticPreviewViewModel)this.DataContext).NextPreview();
+            }
+            else
+            {
+                ((IStaticPreviewViewModel)this.DataContext).PreviousPreview();
+            }
+        }
     }
 }
diff --git a/win/CS/HandBrakeWPF/Views/SummaryView.xaml b/win/CS/HandBrakeWPF/Views/SummaryView.xaml
index e2d638554..cb3ed220b 100644
--- a/win/CS/HandBrakeWPF/Views/SummaryView.xaml
+++ b/win/CS/HandBrakeWPF/Views/SummaryView.xaml
@@ -118,7 +118,7 @@
                 </Grid.ColumnDefinitions>
 
                 <Image Source="{Binding PreviewImage}" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Margin="0,5,10,0" x:Name="previewImage" Panel.ZIndex="0" Grid.ColumnSpan="2"
-                       MaxWidth="{Binding MaxWidth}" MaxHeight="{Binding MaxHeight}" />
+                       MaxWidth="{Binding MaxWidth}" MaxHeight="{Binding MaxHeight}" MouseWheel="PreviewImage_OnMouseWheel" />
 
                 <Border Grid.Row="1" Grid.ColumnSpan="2" VerticalAlignment="Bottom" HorizontalAlignment="Center" Background="Transparent" Margin="0,5,0,5">
                     <TextBlock Text="{Binding PreviewInfo}" TextAlignment="Center" Visibility="{Binding IsPreviewInfoVisible, Converter={StaticResource boolToVisConverter}}" />
@@ -129,6 +129,7 @@
                         <ColumnDefinition Width="42" />
                         <ColumnDefinition Width="42" />
                     </Grid.ColumnDefinitions>
+                    
                     <Border BorderThickness="1,1,1,1" CornerRadius="4,0,0,4" VerticalAlignment="Center" HorizontalAlignment="Left" Grid.Column="0" cal:Message.Attach="[Event MouseDown] = [Action PreviousPreview]"
                             Visibility="{Binding IsPreviousPreviewControlVisible,Converter={StaticResource boolToVisConverter}}"
                             Background="Black" Opacity="0.5" Margin="0,0,0,0" >
diff --git a/win/CS/HandBrakeWPF/Views/SummaryView.xaml.cs b/win/CS/HandBrakeWPF/Views/SummaryView.xaml.cs
index e3c35b48e..8c21fc3da 100644
--- a/win/CS/HandBrakeWPF/Views/SummaryView.xaml.cs
+++ b/win/CS/HandBrakeWPF/Views/SummaryView.xaml.cs
@@ -10,6 +10,9 @@
 namespace HandBrakeWPF.Views
 {
     using System.Windows.Controls;
+    using System.Windows.Input;
+
+    using HandBrakeWPF.ViewModels.Interfaces;
 
     /// <summary>
     /// Interaction logic for SummaryView.xaml
@@ -20,5 +23,17 @@ namespace HandBrakeWPF.Views
         {
             this.InitializeComponent();
         }
+
+        private void PreviewImage_OnMouseWheel(object sender, MouseWheelEventArgs e)
+        {
+            if (e.Delta > 1)
+            {
+                ((ISummaryViewModel)this.DataContext).NextPreview();
+            }
+            else
+            {
+                ((ISummaryViewModel)this.DataContext).PreviousPreview();
+            }
+        }
     }
 }
-- 
2.40.0