From 620d384fa2f18d8a94c20a20a82075a2738c1433 Mon Sep 17 00:00:00 2001
From: VladiStep <vlad2001.21@mail.ru>
Date: Sat, 22 Apr 2023 15:56:42 +0300
Subject: [PATCH] Add a horizontal line as a preview for the top glyph border.

---
 .../EditGlyphRectangleWindow.xaml                | 13 ++++++++++++-
 .../EditGlyphRectangleWindow.xaml.cs             | 16 +++++++++++++++-
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml b/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml
index b3d9129c5..600c0eb8e 100644
--- a/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml
+++ b/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml
@@ -26,7 +26,7 @@
         <ScrollViewer Name="TextureScroll" Grid.Row="1" Margin="3"
                       HorizontalScrollBarVisibility="Visible" VerticalScrollBarVisibility="Visible"
                       PreviewMouseWheel="TextureScroll_MouseWheel" ScrollChanged="TextureScroll_ScrollChanged"
-                      PreviewKeyDown="TextureScroll_PreviewKeyDown">
+                      PreviewKeyDown="TextureScroll_PreviewKeyDown" PreviewKeyUp="TextureScroll_PreviewKeyUp">
             <ScrollViewer.Background>
                 <DynamicResource ResourceKey="{x:Static SystemColors.MenuBrushKey}"/>
             </ScrollViewer.Background>
@@ -162,6 +162,17 @@
                             </DataTemplate>
                         </ItemsControl.Resources>
                     </ItemsControl>
+
+                    <Rectangle Name="GlyphTopLine" VerticalAlignment="Top" HorizontalAlignment="Stretch"
+                               StrokeThickness="1" Height="1"
+                               Visibility="Collapsed" Focusable="False">
+                        <Rectangle.Stroke>
+                            <SolidColorBrush Color="Gold" Opacity="0.6"/>
+                        </Rectangle.Stroke>
+                        <Rectangle.RenderTransform>
+                            <TranslateTransform x:Name="transform3" Y="{Binding SelectedGlyph.SourceY}"/>
+                        </Rectangle.RenderTransform>
+                    </Rectangle>
                 </Grid>
             </Viewbox>
         </ScrollViewer>
diff --git a/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml.cs b/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml.cs
index 129434165..046efbe8e 100644
--- a/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml.cs
+++ b/UndertaleModTool/Editors/UndertaleFontEditor/EditGlyphRectangleWindow.xaml.cs
@@ -201,7 +201,11 @@ private void TextureViewbox_MouseLeftButtonDown(object sender, MouseButtonEventA
                 initShift = SelectedGlyph.Shift;
             }
             else
+            {
                 initType = GetHitType(selectedRect, initPoint);
+                if (initType == HitType.T || initType == HitType.UL || initType == HitType.UR)
+                    GlyphTopLine.Visibility = Visibility.Visible;
+            }
 
             dragInProgress = true;
         }
@@ -214,7 +218,9 @@ private void TextureViewbox_MouseLeftButtonUp(object sender, MouseButtonEventArg
                 TextureViewbox.MouseMove += TextureViewbox_MouseMove;
                 TextureViewbox.Cursor = Cursors.Arrow;
                 ToolTipService.SetIsEnabled(selectedRect, true);
-            } 
+            }
+            else
+                GlyphTopLine.Visibility = Visibility.Collapsed;
 
             dragInProgress = false;
         }
@@ -359,6 +365,9 @@ private void TextureScroll_PreviewKeyDown(object sender, KeyEventArgs e)
             if (SelectedGlyph is null)
                 return;
 
+            if (e.Key == Key.LeftShift || e.Key == Key.RightShift)
+                GlyphTopLine.Visibility = Visibility.Visible;
+
             if ((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
             {
                 switch (e.Key)
@@ -418,6 +427,11 @@ private void TextureScroll_PreviewKeyDown(object sender, KeyEventArgs e)
                     break;
             }
         }
+        private void TextureScroll_PreviewKeyUp(object sender, KeyEventArgs e)
+        {
+            if (e.Key == Key.LeftShift || e.Key == Key.RightShift)
+                GlyphTopLine.Visibility = Visibility.Collapsed;
+        }
 
         private void HelpButton_Click(object sender, RoutedEventArgs e)
         {