From 71f6407845273bffcdd64d2b2a336adca37b4505 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tiago=20Concei=C3=A7=C3=A3o?= <Tiago_caza@hotmail.com>
Date: Tue, 5 Apr 2022 22:19:50 +0100
Subject: [PATCH] Update `MaterialCost` when `MaterialMilliliters` changes
 (#449)

- (Add) Property `StartingMaterialMilliliters`: Gets the starting material milliliters when the file loaded
- (Add) Property `StartingMaterialCost`: Gets the starting material cost when the file loaded
- (Improvement) Update `MaterialCost` when `MaterialMilliliters` changes (#449)
---
 UVtools.Core/FileFormats/FileFormat.cs | 25 ++++++++++++++++++++++---
 UVtools.Core/FileFormats/SL1File.cs    |  5 ++++-
 2 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/UVtools.Core/FileFormats/FileFormat.cs b/UVtools.Core/FileFormats/FileFormat.cs
index 8f10c8e..12ad9e4 100644
--- a/UVtools.Core/FileFormats/FileFormat.cs
+++ b/UVtools.Core/FileFormats/FileFormat.cs
@@ -2724,6 +2724,11 @@ public abstract class FileFormat : BindableBase, IDisposable, IEquatable<FileFor
         }
     }
 
+    /// <summary>
+    /// Gets the starting material milliliters when the file loaded
+    /// </summary>
+    public float StartingMaterialMilliliters { get; private set; }
+
     /// <summary>
     /// Gets the estimate used material in ml
     /// </summary>
@@ -2740,7 +2745,13 @@ public abstract class FileFormat : BindableBase, IDisposable, IEquatable<FileFor
                 value = (float)Math.Round(value, 3);
             }
 
-            RaiseAndSetIfChanged(ref _materialMilliliters, value);
+            if(!RaiseAndSetIfChanged(ref _materialMilliliters, value)) return;
+
+            if (StartingMaterialMilliliters > 0 && StartingMaterialCost > 0)
+            {
+                MaterialCost = _materialMilliliters * StartingMaterialCost / StartingMaterialMilliliters;
+            }
+            //RaisePropertyChanged(nameof(MaterialCost));
         }
     }
 
@@ -2753,16 +2764,21 @@ public abstract class FileFormat : BindableBase, IDisposable, IEquatable<FileFor
     public virtual float MaterialGrams
     {
         get => _materialGrams;
-        set => RaiseAndSetIfChanged(ref _materialGrams, value);
+        set => RaiseAndSetIfChanged(ref _materialGrams, (float)Math.Round(value, 3));
     }
 
+    /// <summary>
+    /// Gets the starting material cost when the file loaded
+    /// </summary>
+    public float StartingMaterialCost { get; private set; }
+
     /// <summary>
     /// Gets the estimate material cost
     /// </summary>
     public virtual float MaterialCost
     {
         get => _materialCost;
-        set => RaiseAndSetIfChanged(ref _materialCost, value);
+        set => RaiseAndSetIfChanged(ref _materialCost, (float)Math.Round(value, 3));
     }
 
     /// <summary>
@@ -3295,6 +3311,9 @@ public abstract class FileFormat : BindableBase, IDisposable, IEquatable<FileFor
 
         DecodeInternally(progress);
         IsModified = false;
+        StartingMaterialMilliliters = MaterialMilliliters;
+        StartingMaterialCost = MaterialCost;
+        
 
         progress.ThrowIfCancellationRequested();
 
diff --git a/UVtools.Core/FileFormats/SL1File.cs b/UVtools.Core/FileFormats/SL1File.cs
index f9ae380..e3e6390 100644
--- a/UVtools.Core/FileFormats/SL1File.cs
+++ b/UVtools.Core/FileFormats/SL1File.cs
@@ -488,7 +488,10 @@ public class SL1File : FileFormat
 
     public override float MaterialGrams => (float) Math.Round(OutputConfigSettings.UsedMaterial * MaterialSettings.MaterialDensity, 3);
 
-    public override float MaterialCost => MaterialSettings.BottleVolume > 0 ? (float) Math.Round(OutputConfigSettings.UsedMaterial * MaterialSettings.BottleCost / MaterialSettings.BottleVolume, 3) : 0;
+    public override float MaterialCost =>
+        MaterialSettings.BottleVolume > 0
+            ? (float) Math.Round(OutputConfigSettings.UsedMaterial * MaterialSettings.BottleCost / MaterialSettings.BottleVolume, 3)
+            : base.MaterialCost;
 
     public override string? MaterialName
     {