Merge pull request #2354 from onesounds/FixPreviewDragLine

Fix the issue resizable while preview turned off

Author: onesounds

Flow.Launcher/Converters/BoolToVisibilityConverter.cs

@@ -34,4 +34,38 @@ public object Convert(object value, System.Type targetType, object parameter, Cu
 
         public object ConvertBack(object value, System.Type targetType, object parameter, CultureInfo culture) => throw new System.InvalidOperationException();
     }
+
+    public class SplitterConverter : IValueConverter
+    /* Prevents the dragging part of the preview area from working when preview is turned off. */
+    {
+        public object Convert(object value, System.Type targetType, object parameter, CultureInfo culture)
+        {
+            if (parameter != null)
+            {
+                if (value is true)
+                {
+                    return 0;
+                }
+
+                else
+                {
+                    return 5;
+                }
+            }
+            else
+            {
+                if (value is true)
+                {
+                    return 5;
+                }
+
+                else
+                {
+                    return 0;
+                }
+            }
+        }
+
+        public object ConvertBack(object value, System.Type targetType, object parameter, CultureInfo culture) => throw new System.InvalidOperationException();
+    }
 }

Flow.Launcher/MainWindow.xaml

@@ -38,6 +38,7 @@
         <converters:QuerySuggestionBoxConverter x:Key="QuerySuggestionBoxConverter" />
         <converters:BorderClipConverter x:Key="BorderClipConverter" />
         <converters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
+        <converters:SplitterConverter x:Key="SplitterConverter" />
         <converters:BoolToIMEConversionModeConverter x:Key="BoolToIMEConversionModeConverter" />
         <converters:BoolToIMEStateConverter x:Key="BoolToIMEStateConverter" />
         <converters:StringToKeyBindingConverter x:Key="StringToKeyBindingConverter" />
@@ -398,7 +399,7 @@
                     </StackPanel>
                     <GridSplitter
                         Grid.Column="1"
-                        Width="5"
+                        Width="{Binding PreviewVisible, Converter={StaticResource SplitterConverter}}"
                         HorizontalAlignment="Center"
                         VerticalAlignment="Stretch"
                         Background="Transparent"