Implement review hints

src/Greenshot.Editor/Drawing/CropContainer.cs

@@ -85,20 +85,15 @@ namespace Greenshot.Editor.Drawing
                     }
                 default:
                     {
-                        InitCropStyle();
+                        CreateDefaultAdorners();
                         break;
                     }
             }
         }
 
-        private void InitCropStyle()
-        {
-            CreateDefaultAdorners();
-        }
-
         private void InitHorizontalCropOutStyle()
         {
-            var defaultHeight = 25;
+            const int defaultHeight = 25;
 
             if (_parent?.Image is { } image)
             {
@@ -109,7 +104,7 @@ namespace Greenshot.Editor.Drawing
 
         private void InitVerticalCropOutStyle()
         {
-            var defaultWidth = 25;
+            const int defaultWidth = 25;
 
             if (_parent?.Image is { } image)
             {

src/Greenshot.Editor/Drawing/Surface.cs

@@ -1188,8 +1188,8 @@ namespace Greenshot.Editor.Drawing
         /// <returns></returns>
         public bool ApplyCrop(Rectangle cropRectangle)
         {
-            if (IsCropPossible(ref cropRectangle))
+            if (!IsCropPossible(ref cropRectangle)) return false;
-            {
+
             Rectangle imageRectangle = new Rectangle(Point.Empty, Image.Size);
             Bitmap tmpImage;
             // Make sure we have information, this this fails
@@ -1223,9 +1223,6 @@ namespace Greenshot.Editor.Drawing
             return true;
         }
 
-            return false;
-        }
-
         /// <summary>
         /// Crop out the surface
         /// Splits the image in 3 parts(top, middle, bottom). Crop out the middle and joins top and bottom. 
@@ -1234,8 +1231,8 @@ namespace Greenshot.Editor.Drawing
         /// <returns></returns>
         public bool ApplyHorizontalCrop(Rectangle cropRectangle)
         {
-            if (IsCropPossible(ref cropRectangle))
+            if (!IsCropPossible(ref cropRectangle)) return false;
-            {
+
             Rectangle imageRectangle = new Rectangle(Point.Empty, Image.Size);
             Bitmap tmpNewimage, tmpImageTop, tmpImageBottom;
             // Make sure we have information, this this fails
@@ -1257,6 +1254,8 @@ namespace Greenshot.Editor.Drawing
             g.DrawImage(tmpImageTop, new Point(0, 0));
             g.DrawImage(tmpImageBottom, new Point(0, tmpImageTop.Height));
 
+            tmpImageTop.Dispose();
+            tmpImageBottom.Dispose();
 
             Matrix matrix = new Matrix();
             matrix.Translate(0, -(cropRectangle.Top + cropRectangle.Height), MatrixOrder.Append);
@@ -1276,9 +1275,6 @@ namespace Greenshot.Editor.Drawing
             return true;
         }
 
-            return false;
-        }
-
         /// <summary>
         /// Crop out the surface
         /// Splits the image in 3 parts(left, middle, right). Crop out the middle and joins top and bottom.
@@ -1287,8 +1283,8 @@ namespace Greenshot.Editor.Drawing
         /// <returns></returns>
         public bool ApplyVerticalCrop(Rectangle cropRectangle)
         {
-            if (IsCropPossible(ref cropRectangle))
+            if (!IsCropPossible(ref cropRectangle)) return false;
-            {
+
             Rectangle imageRectangle = new Rectangle(Point.Empty, Image.Size);
             Bitmap tmpNewimage, tmpImageLeft, tmpImageRight;
             // Make sure we have information, this this fails
@@ -1311,6 +1307,9 @@ namespace Greenshot.Editor.Drawing
             g.DrawImage(tmpImageLeft, new Point(0, 0));
             g.DrawImage(tmpImageRight, new Point(tmpImageLeft.Width, 0));
 
+            tmpImageLeft.Dispose();
+            tmpImageRight.Dispose();
+
             Matrix matrix = new Matrix();
             matrix.Translate(-cropRectangle.Left - cropRectangle.Width, 0, MatrixOrder.Append);
             // Make undoable
@@ -1329,9 +1328,6 @@ namespace Greenshot.Editor.Drawing
             return true;
         }
 
-            return false;
-        }
-
         /// <summary>
         /// The background here is the captured image.
         /// This is called from the SurfaceBackgroundChangeMemento.
@@ -2103,13 +2099,13 @@ namespace Greenshot.Editor.Drawing
 
         public void RemoveCropContainer()
         {
-            if (_cropContainer != null)
+            if (_cropContainer == null) return;
-            {
+
             RemoveElement(_cropContainer, false);
             _cropContainer.Dispose();
             _cropContainer = null;
         }
-        }
+
         /// <summary>
         /// Paste all the elements that are on the clipboard
         /// </summary>

src/Greenshot.Editor/Forms/ImageEditorForm.cs

@@ -728,13 +728,12 @@ namespace Greenshot.Editor.Forms
 
         private void BtnCropClick(object sender, EventArgs e)
         {
-            if (_surface.DrawingMode != DrawingModes.Crop)
+            if (_surface.DrawingMode == DrawingModes.Crop) return;
-            {
+
             _surface.DrawingMode = DrawingModes.Crop;
             InitCropMode((CropContainer.CropMode)_surface.FieldAggregator.GetField(FieldType.CROPMODE).Value);
             RefreshFieldControls();
         }
-        }
 
         private void BtnHighlightClick(object sender, EventArgs e)
         {