[ImageResizer] Default values for new size (#13285)

* Code changes

* small fix in unittests

* Add new Unit Test

* Fix tests

* fix typo

* remove unused code from unit test

* Update resource string name

* Add name counter

* comment update

* Update tests

src/settings-ui/Microsoft.PowerToys.Settings.UI.Library/ViewModels/ImageResizerViewModel.cs

@@ -250,11 +250,16 @@ namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
             }
         }
 
-        public void AddRow()
+        public void AddRow(string sizeNamePrefix)
         {
+            // Without validation we get warning CA1062 when unsing the parameter variable sizeNamePrefix
+            string prefixString = string.IsNullOrEmpty(sizeNamePrefix) ? "New Size" : sizeNamePrefix;
+
             ObservableCollection<ImageSize> imageSizes = Sizes;
             int maxId = imageSizes.Count > 0 ? imageSizes.OrderBy(x => x.Id).Last().Id : -1;
-            ImageSize newSize = new ImageSize(maxId + 1);
+            string sizeName = GenerateNameForNewSize(imageSizes, prefixString);
+
+            ImageSize newSize = new ImageSize(maxId + 1, sizeName, ResizeFit.Fit, 854, 480, ResizeUnit.Pixel);
             newSize.PropertyChanged += SizePropertyChanged;
             imageSizes.Add(newSize);
             _advancedSizes = imageSizes;
@@ -371,5 +376,28 @@ namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
             _advancedSizes = imageSizes;
             SavesImageSizes(imageSizes);
         }
+
+        private static string GenerateNameForNewSize(in ObservableCollection<ImageSize> sizesList, in string namePrefix)
+        {
+            int newSizeCounter = 0;
+
+            foreach (ImageSize imgSize in sizesList)
+            {
+                string name = imgSize.Name;
+
+                if (name.StartsWith(namePrefix, StringComparison.InvariantCulture))
+                {
+                    if (int.TryParse(name.Substring(namePrefix.Length), out int number))
+                    {
+                        if (newSizeCounter < number)
+                        {
+                            newSizeCounter = number;
+                        }
+                    }
+                }
+            }
+
+            return $"{namePrefix} {++newSizeCounter}";
+        }
     }
 }

src/settings-ui/Microsoft.PowerToys.Settings.UI.UnitTests/ViewModelTests/ImageResizer.cs

@@ -204,7 +204,7 @@ namespace ViewModelTests
         }
 
         [TestMethod]
-        public void AddRowShouldAddEmptyImageSizeWhenSuccessful()
+        public void AddRowShouldAddNewImageSizeWhenSuccessful()
         {
             // arrange
             var mockSettingsUtils = ISettingsUtilsMocks.GetStubSettingsUtils<ImageResizerSettings>();
@@ -213,12 +213,32 @@ namespace ViewModelTests
             int sizeOfOriginalArray = viewModel.Sizes.Count;
 
             // act
-            viewModel.AddRow();
+            viewModel.AddRow("New size");
 
             // Assert
             Assert.AreEqual(sizeOfOriginalArray + 1, viewModel.Sizes.Count);
         }
 
+        [TestMethod]
+        public void NewlyAddedImageSizeHasCorrectValues()
+        {
+            // arrange
+            var mockSettingsUtils = ISettingsUtilsMocks.GetStubSettingsUtils<ImageResizerSettings>();
+            Func<string, int> sendMockIPCConfigMSG = msg => { return 0; };
+            ImageResizerViewModel viewModel = new ImageResizerViewModel(mockSettingsUtils.Object, SettingsRepository<GeneralSettings>.GetInstance(_mockGeneralSettingsUtils.Object), sendMockIPCConfigMSG, (string name) => name);
+
+            // act
+            viewModel.AddRow("New size");
+
+            // Assert
+            ImageSize newTestSize = viewModel.Sizes.Where<ImageSize>(x => x.Id == 0).First();
+            Assert.AreEqual(newTestSize.Name, "New size 1");
+            Assert.AreEqual(newTestSize.Fit, (int)ResizeFit.Fit);
+            Assert.AreEqual(newTestSize.Width, 854);
+            Assert.AreEqual(newTestSize.Height, 480);
+            Assert.AreEqual(newTestSize.Unit, (int)ResizeUnit.Pixel);
+        }
+
         [TestMethod]
         public void DeleteImageSizeShouldDeleteImageSizeWhenSuccessful()
         {
@@ -226,7 +246,7 @@ namespace ViewModelTests
             var mockSettingsUtils = ISettingsUtilsMocks.GetStubSettingsUtils<ImageResizerSettings>();
             Func<string, int> sendMockIPCConfigMSG = msg => { return 0; };
             ImageResizerViewModel viewModel = new ImageResizerViewModel(mockSettingsUtils.Object, SettingsRepository<GeneralSettings>.GetInstance(_mockGeneralSettingsUtils.Object), sendMockIPCConfigMSG, (string name) => name);
-            viewModel.AddRow();
+            viewModel.AddRow("New Size");
             int sizeOfOriginalArray = viewModel.Sizes.Count;
             ImageSize deleteCandidate = viewModel.Sizes.Where<ImageSize>(x => x.Id == 0).First();
 
@@ -238,6 +258,27 @@ namespace ViewModelTests
             Assert.IsFalse(viewModel.Sizes.Contains(deleteCandidate));
         }
 
+        [TestMethod]
+        public void NameOfNewImageSizesIsIncrementedCorrectly()
+        {
+            // arrange
+            var mockSettingsUtils = ISettingsUtilsMocks.GetStubSettingsUtils<ImageResizerSettings>();
+            Func<string, int> sendMockIPCConfigMSG = msg => { return 0; };
+            ImageResizerViewModel viewModel = new ImageResizerViewModel(mockSettingsUtils.Object, SettingsRepository<GeneralSettings>.GetInstance(_mockGeneralSettingsUtils.Object), sendMockIPCConfigMSG, (string name) => name);
+
+            // act
+            viewModel.AddRow("New size"); // Add: "New size 1"
+            viewModel.AddRow("New size"); // Add: "New size 2"
+            viewModel.AddRow("New size"); // Add: "New size 3"
+            viewModel.DeleteImageSize(1); // Delete: "New size 2"
+            viewModel.AddRow("New size"); // Add: "New Size 4"
+
+            // Assert
+            Assert.AreEqual(viewModel.Sizes[0].Name, "New size 1");
+            Assert.AreEqual(viewModel.Sizes[1].Name, "New size 3");
+            Assert.AreEqual(viewModel.Sizes[2].Name, "New size 4");
+        }
+
         [TestMethod]
         public void UpdateWidthAndHeightShouldUpdateSizeWhenCorrectValuesAreProvided()
         {

src/settings-ui/Microsoft.PowerToys.Settings.UI/Strings/en-us/Resources.resw

@@ -1620,4 +1620,8 @@ From there, simply click on a Markdown file, PDF file or SVG icon in the File Ex
   <data name="FancyZones_SpanZonesAcrossMonitorsPrerequisites.Text" xml:space="preserve">
     <value>All monitors must have the same DPI scaling and will be treated as one large combined rectangle which contains all monitors</value>
   </data>
+  <data name="ImageResizer_DefaultSize_NewSizePrefix" xml:space="preserve">
+    <value>New size</value>
+    <comment>First part of the default name of new sizes that can be added in PT's settings ui.</comment>
+  </data>
 </root>

src/settings-ui/Microsoft.PowerToys.Settings.UI/Views/ImageResizerPage.xaml.cs

@@ -72,7 +72,7 @@ namespace Microsoft.PowerToys.Settings.UI.Views
         {
             try
             {
-                ViewModel.AddRow();
+                ViewModel.AddRow(ResourceLoader.GetForCurrentView().GetString("ImageResizer_DefaultSize_NewSizePrefix"));
             }
             catch (Exception ex)
             {