From a4916e075b7460e791b1b40307188a43cb537a8c Mon Sep 17 00:00:00 2001
From: James Coliz <jcoliz@outlook.com>
Date: Tue, 9 Jul 2024 13:16:45 -0700
Subject: [PATCH] feat(ui): Display bounding boxes around 'boxes' in the
 definition

---
 LogoSlideMaker.WinUi/MainWindow.xaml.cs       | 13 +++++-
 .../ViewModels/MainViewModel.cs               | 45 ++++++++++---------
 2 files changed, 35 insertions(+), 23 deletions(-)

diff --git a/LogoSlideMaker.WinUi/MainWindow.xaml.cs b/LogoSlideMaker.WinUi/MainWindow.xaml.cs
index 8814128..d20c8e9 100644
--- a/LogoSlideMaker.WinUi/MainWindow.xaml.cs
+++ b/LogoSlideMaker.WinUi/MainWindow.xaml.cs
@@ -13,6 +13,7 @@
 using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Windows.Foundation;
@@ -357,7 +358,17 @@ private void CanvasControl_Draw(CanvasControl _, CanvasDrawEventArgs args)
     {
         try
         {
-            foreach (var p in viewModel.Primitives)
+            var primitives = viewModel.ShowBoundingBoxes ?
+                viewModel.Primitives.Concat(viewModel.BoxPrimitives) : 
+                viewModel.Primitives;
+
+            if (primitives is null)
+            {
+                logger.LogError("Draw: Primitives failed");
+                return;
+            }
+
+            foreach (var p in primitives)
             {
                 Draw(p, args.DrawingSession);
             }
diff --git a/LogoSlideMaker.WinUi/ViewModels/MainViewModel.cs b/LogoSlideMaker.WinUi/ViewModels/MainViewModel.cs
index c9c8f69..3449cf6 100644
--- a/LogoSlideMaker.WinUi/ViewModels/MainViewModel.cs
+++ b/LogoSlideMaker.WinUi/ViewModels/MainViewModel.cs
@@ -49,6 +49,11 @@ public class MainViewModel(IGetImageAspectRatio bitmaps, ILogger<MainViewModel>
     /// </summary>
     public IReadOnlyList<Primitive> Primitives => _primitives;
 
+    /// <summary>
+    /// Drawing primitives needed to render bounding boxes for the current slide
+    /// </summary>
+    public IReadOnlyList<Primitive> BoxPrimitives => _boxPrimitives;
+
     /// <summary>
     /// All the image paths we would need to render
     /// </summary>
@@ -400,12 +405,14 @@ public void BackToPreviousSlide()
     /// </remarks>
     public void GeneratePrimitives()
     {
+        _primitives.Clear();
+        _boxPrimitives.Clear();
+
         if (_definition is null || _layout is null)
         {
             return;
         }
 
-        _primitives.Clear();
         var config = _definition.Render;
 
         // Add primitives for a background
@@ -436,29 +443,22 @@ public void GeneratePrimitives()
         var generator = new PrimitivesEngine(config, bitmaps);
         _primitives.AddRange(_layout.Logos.SelectMany(generator.ToPrimitives));
 
-#if false
-        // TODO: Need a new home for this! Elsewhere we are handling bounding boxes
-        // as a rendering operation NOT a primitive-generating operation.
-        // Add bounding boxes for any boxes with explicit outer dimensions
-        if (ShowBoundingBoxes)
-        {
-            _primitives.AddRange(
-                _definition.Boxes
-                    .Where(x => x.Outer is not null)
-                    .Select(x => new RectanglePrimitive()
+        // Add optional primitives to draw 
+        _boxPrimitives.AddRange(
+            _definition.Boxes
+                .Where(x => x.Outer is not null)
+                .Select(x => new RectanglePrimitive()
+                {
+                    Rectangle = x.Outer! with
                     {
-                        Rectangle = x.Outer! with
-                        {
-                            X = x.Outer.X * 96m,
-                            Y = x.Outer.Y * 96m,
-                            Width = x.Outer.Width * 96m,
-                            Height = x.Outer.Height * 96m
-                        }
+                        X = x.Outer.X * 96m,
+                        Y = x.Outer.Y * 96m,
+                        Width = x.Outer.Width * 96m,
+                        Height = x.Outer.Height * 96m
                     }
-            )
-            );
-        }
-#endif
+                }
+                )
+        );
     }
 
     /// <summary>
@@ -635,6 +635,7 @@ private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
     private Definition? _definition;
     private SlideLayout? _layout;
     private readonly List<Primitive> _primitives = [];
+    private readonly List<Primitive> _boxPrimitives = [];
 
     #endregion
 }