From a5036d12300cb4f6831255987da3d3800731f804 Mon Sep 17 00:00:00 2001
From: Venomalia <Venomalia@mailbox.org>
Date: Tue, 10 Aug 2021 10:45:21 +0200
Subject: [PATCH] the grid will now be displayed.

---
 Controls/PanZoom.xaml                   |  5 +++--
 Data/CanvasGrid.cs                      |  8 +++----
 Data/RegionBrush.cs                     | 18 ++++++++++++++--
 ValueConverters/CanvasGridToViewport.cs | 28 +++++++++++++++++++++++++
 4 files changed, 51 insertions(+), 8 deletions(-)
 create mode 100644 ValueConverters/CanvasGridToViewport.cs

diff --git a/Controls/PanZoom.xaml b/Controls/PanZoom.xaml
index ad47db7..39b9174 100644
--- a/Controls/PanZoom.xaml
+++ b/Controls/PanZoom.xaml
@@ -11,6 +11,7 @@
     <UserControl.Resources>
         <converters:ScaleFactorToPercentageValueConverter x:Key="ScaleFactorToPercentageValueConverter"/>
         <converters:PathToImageValueConverter x:Key="PathToImageValueConverter"/>
+        <converters:CanvasGridToViewport x:Key="CanvasGridToViewport"/>
         <BooleanToVisibilityConverter x:Key="BoolToVis" />
         <ContextMenu x:Key="ItemContextMenu">
             <MenuItem Header="Delete" Command="{Binding RelativeSource={RelativeSource AncestorType={x:Type controls:PanZoom}},
@@ -129,7 +130,7 @@
                     <Grid>
                         <Grid VerticalAlignment="Top" HorizontalAlignment="Left">
                             <Grid.Background>
-                                <DrawingBrush TileMode="Tile" Viewport="0,0,2,2" 
+                                <DrawingBrush x:Name="Canvas" TileMode="Tile" Viewport="{Binding InputPack.SelectedRegionBrush.Grid, Mode=OneWay, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource CanvasGridToViewport}}"
                                       ViewportUnits="Absolute">
                                     <DrawingBrush.Drawing>
                                         <DrawingGroup>
@@ -173,7 +174,7 @@
             </Border>
         </Grid>
         <Grid VerticalAlignment="Center" HorizontalAlignment="Center" Visibility="{Binding InputPack.IsEditingTextureHelpAvailable, Converter={StaticResource BoolToVis}}">
-            <TextBlock TextWrapping="Wrap" Text="Click the 'Add Texture' buton on the left to get started.  Once added, double click on a texture to begin placing emulated regions." />
+            <TextBlock TextWrapping="Wrap" Text="Click the 'Add Texture' buton on the left to get started. Once added, double click on a texture to begin placing emulated regions." />
         </Grid>
     </Grid>
 </UserControl>
diff --git a/Data/CanvasGrid.cs b/Data/CanvasGrid.cs
index e269231..19ec705 100644
--- a/Data/CanvasGrid.cs
+++ b/Data/CanvasGrid.cs
@@ -29,7 +29,7 @@ public double X {
                     value = 0;
                 _x = value;
 
-                RectRegion.Grid = this;
+                OnPropertyChanged(nameof(CanvasGrid));
                 OnPropertyChanged(nameof(X));
             }
         }
@@ -50,7 +50,7 @@ public double Y {
                     value = 0;
                 _y = value;
 
-                RectRegion.Grid = this;
+                OnPropertyChanged(nameof(CanvasGrid));
                 OnPropertyChanged(nameof(Y));
             }
         }
@@ -72,7 +72,7 @@ public double Width
 
                 if (X >= value) X = value - 1;
 
-                RectRegion.Grid = this;
+                OnPropertyChanged(nameof(CanvasGrid));
                 OnPropertyChanged(nameof(Width));
             }
         }
@@ -94,7 +94,7 @@ public double Height
 
                 if (Y >= value) Y = value - 1;
 
-                RectRegion.Grid = this;
+                OnPropertyChanged(nameof(CanvasGrid));
                 OnPropertyChanged(nameof(Height));
             }
         }
diff --git a/Data/RegionBrush.cs b/Data/RegionBrush.cs
index 102b880..b3ebcee 100644
--- a/Data/RegionBrush.cs
+++ b/Data/RegionBrush.cs
@@ -68,17 +68,31 @@ public bool Subpixel
         /// <summary>
         /// Canvas grid.
         /// </summary>
-        private CanvasGrid _grid = new CanvasGrid(0,0,1,1);
+        private CanvasGrid _grid;
         public CanvasGrid Grid
         {
-            get { return _grid; }
+            get 
+            {
+                if (_grid == null)
+                    Grid = new CanvasGrid(0, 0, 1, 1);
+                return _grid; 
+            }
             set
             {
                 _grid = value;
+                _grid.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(UpdateCanvasGrid);
                 OnPropertyChanged(nameof(Grid));
             }
         }
 
+        private void UpdateCanvasGrid(object sender, System.ComponentModel.PropertyChangedEventArgs e)
+        {
+            if (e.PropertyName == nameof(CanvasGrid))
+            {
+                OnPropertyChanged(nameof(Grid));
+                RectRegion.Grid = _grid;
+            }
+        }
         #endregion
     }
 }
diff --git a/ValueConverters/CanvasGridToViewport.cs b/ValueConverters/CanvasGridToViewport.cs
new file mode 100644
index 0000000..639cb01
--- /dev/null
+++ b/ValueConverters/CanvasGridToViewport.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows;
+using System.Windows.Data;
+
+namespace DolphinDynamicInputTextureCreator.ValueConverters
+{
+    class CanvasGridToViewport : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var Rect = (Rect)(Data.CanvasGrid)value;
+            Rect.Width *= 2;
+            Rect.Height *= 2;
+            return (Rect)Rect;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var Rect = (Rect)value;
+            Rect.Width *= 0.5;
+            Rect.Height *= 0.5;
+            return (Rect)Rect;
+        }
+    }
+}