(#63)v0.8.2.3

* (Add) Pixel Editor: Erase drawing edits while hold Control (#63)
* (Add) Pixel Editor: When using diameters larger than 1px and when possible the cursor will show the associated drawing preview (#63)
* (Fix) Pixel Editor: Area px<sup>2</sup> to Diameter px (#63)

5 files changed, 177 insertions, 58 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d5d671..a729c1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,11 @@
 # Changelog
 
-## /09/2020 - v0.8.2.3
+## 19/09/2020 - v0.8.2.3
 
 * (Add) Tooltip for next and previous layer buttons with associated shortcut (#61)
+* (Add) Pixel Editor: Erase drawing edits while hold Control (#63)
+* (Add) Pixel Editor: When using diameters larger than 1px and when possible the cursor will show the associated drawing preview (#63)
+* (Fix) Pixel Editor: Area px<sup>2</sup> to Diameter px (#63)
 * (Fix) LGS: Some plugins and slicers use XY resolution information, while others are swapped, a auto swap will be performed when required (#59)
 * (Fix) Global hotkeys prevent user from typing that key on controls (#62)
 
diff --git a/UVtools.Core/Extensions/DrawingExtensions.cs b/UVtools.Core/Extensions/DrawingExtensions.cs
index 8a60ee4..33406a5 100644
--- a/UVtools.Core/Extensions/DrawingExtensions.cs
+++ b/UVtools.Core/Extensions/DrawingExtensions.cs
@@ -30,5 +30,10 @@ namespace UVtools.Core.Extensions
         {
             return size.Width * size.Height;
         }
+
+        public static int GetMaximum(this Size size)
+        {
+            return Math.Max(size.Width, size.Height);
+        }
     }
 }
diff --git a/UVtools.GUI/FrmMain.Designer.cs b/UVtools.GUI/FrmMain.Designer.cs
index 074f552..2298a5b 100644
--- a/UVtools.GUI/FrmMain.Designer.cs
+++ b/UVtools.GUI/FrmMain.Designer.cs
@@ -61,6 +61,7 @@ namespace UVtools.GUI
             this.statusBar = new System.Windows.Forms.StatusStrip();
             this.mainTable = new System.Windows.Forms.TableLayoutPanel();
             this.scCenter = new System.Windows.Forms.SplitContainer();
+            this.lbLayerImageTooltipOverlay = new UVtools.GUI.Controls.TransparentLabel();
             this.pbLayer = new Cyotek.Windows.Forms.ImageBox();
             this.tsLayer = new System.Windows.Forms.ToolStrip();
             this.btnLayerImageExport = new System.Windows.Forms.ToolStripSplitButton();
@@ -248,6 +249,7 @@ namespace UVtools.GUI
             this.panelLayerNavigation = new System.Windows.Forms.Panel();
             this.pbTrackerIssues = new System.Windows.Forms.PictureBox();
             this.lbActualLayer = new System.Windows.Forms.Label();
+            this.tbLayer = new UVtools.GUI.Controls.TrackBarEx();
             this.lbInitialLayer = new System.Windows.Forms.Label();
             this.panel2 = new System.Windows.Forms.Panel();
             this.btnFindLayer = new System.Windows.Forms.Button();
@@ -258,8 +260,6 @@ namespace UVtools.GUI
             this.toolTipInformation = new System.Windows.Forms.ToolTip(this.components);
             this.layerScrollTimer = new System.Windows.Forms.Timer(this.components);
             this.mouseHoldTimer = new System.Windows.Forms.Timer(this.components);
-            this.lbLayerImageTooltipOverlay = new UVtools.GUI.Controls.TransparentLabel();
-            this.tbLayer = new UVtools.GUI.Controls.TrackBarEx();
             this.menu.SuspendLayout();
             this.mainTable.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.scCenter)).BeginInit();
@@ -318,8 +318,8 @@ namespace UVtools.GUI
             this.tlRight.SuspendLayout();
             this.panelLayerNavigation.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.pbTrackerIssues)).BeginInit();
-            this.panel2.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.tbLayer)).BeginInit();
+            this.panel2.SuspendLayout();
             this.SuspendLayout();
             // 
             // menu
@@ -608,6 +608,23 @@ namespace UVtools.GUI
             this.scCenter.SplitterDistance = 730;
             this.scCenter.TabIndex = 4;
             // 
+            // lbLayerImageTooltipOverlay
+            // 
+            this.lbLayerImageTooltipOverlay.AutoSize = true;
+            this.lbLayerImageTooltipOverlay.BackColor = System.Drawing.Color.Transparent;
+            this.lbLayerImageTooltipOverlay.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+            this.lbLayerImageTooltipOverlay.CausesValidation = false;
+            this.lbLayerImageTooltipOverlay.Location = new System.Drawing.Point(13, 37);
+            this.lbLayerImageTooltipOverlay.Name = "lbLayerImageTooltipOverlay";
+            this.lbLayerImageTooltipOverlay.Opacity = ((byte)(210));
+            this.lbLayerImageTooltipOverlay.Padding = new System.Windows.Forms.Padding(10);
+            this.lbLayerImageTooltipOverlay.Size = new System.Drawing.Size(80, 40);
+            this.lbLayerImageTooltipOverlay.TabIndex = 8;
+            this.lbLayerImageTooltipOverlay.Text = "Overlay";
+            this.lbLayerImageTooltipOverlay.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
+            this.lbLayerImageTooltipOverlay.TransparentBackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(255)))), ((int)(((byte)(192)))));
+            this.lbLayerImageTooltipOverlay.Visible = false;
+            // 
             // pbLayer
             // 
             this.pbLayer.AllowDoubleClick = true;
@@ -1813,7 +1830,7 @@ namespace UVtools.GUI
             // 
             this.nmPixelEditorDrawingThickness.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
             | System.Windows.Forms.AnchorStyles.Right)));
-            this.nmPixelEditorDrawingThickness.Location = new System.Drawing.Point(108, 160);
+            this.nmPixelEditorDrawingThickness.Location = new System.Drawing.Point(125, 160);
             this.nmPixelEditorDrawingThickness.Maximum = new decimal(new int[] {
             200,
             0,
@@ -1825,7 +1842,7 @@ namespace UVtools.GUI
             0,
             -2147483648});
             this.nmPixelEditorDrawingThickness.Name = "nmPixelEditorDrawingThickness";
-            this.nmPixelEditorDrawingThickness.Size = new System.Drawing.Size(224, 24);
+            this.nmPixelEditorDrawingThickness.Size = new System.Drawing.Size(207, 24);
             this.nmPixelEditorDrawingThickness.TabIndex = 32;
             this.nmPixelEditorDrawingThickness.Value = new decimal(new int[] {
             1,
@@ -1848,9 +1865,9 @@ namespace UVtools.GUI
             | System.Windows.Forms.AnchorStyles.Right)));
             this.cbPixelEditorDrawingLineType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
             this.cbPixelEditorDrawingLineType.FormattingEnabled = true;
-            this.cbPixelEditorDrawingLineType.Location = new System.Drawing.Point(108, 66);
+            this.cbPixelEditorDrawingLineType.Location = new System.Drawing.Point(125, 66);
             this.cbPixelEditorDrawingLineType.Name = "cbPixelEditorDrawingLineType";
-            this.cbPixelEditorDrawingLineType.Size = new System.Drawing.Size(258, 26);
+            this.cbPixelEditorDrawingLineType.Size = new System.Drawing.Size(241, 26);
             this.cbPixelEditorDrawingLineType.TabIndex = 30;
             // 
             // label17
@@ -1879,7 +1896,7 @@ namespace UVtools.GUI
             // label16
             // 
             this.label16.AutoSize = true;
-            this.label16.Location = new System.Drawing.Point(114, 217);
+            this.label16.Location = new System.Drawing.Point(131, 217);
             this.label16.Name = "label16";
             this.label16.Size = new System.Drawing.Size(49, 18);
             this.label16.TabIndex = 9;
@@ -1889,7 +1906,7 @@ namespace UVtools.GUI
             // 
             this.nmPixelEditorDrawingLayersBelow.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
             | System.Windows.Forms.AnchorStyles.Right)));
-            this.nmPixelEditorDrawingLayersBelow.Location = new System.Drawing.Point(108, 190);
+            this.nmPixelEditorDrawingLayersBelow.Location = new System.Drawing.Point(125, 190);
             this.nmPixelEditorDrawingLayersBelow.Maximum = new decimal(new int[] {
             65535,
             0,
@@ -1914,15 +1931,15 @@ namespace UVtools.GUI
             this.label6.AutoSize = true;
             this.label6.Location = new System.Drawing.Point(338, 133);
             this.label6.Name = "label6";
-            this.label6.Size = new System.Drawing.Size(28, 18);
+            this.label6.Size = new System.Drawing.Size(23, 18);
             this.label6.TabIndex = 6;
-            this.label6.Text = "px²";
+            this.label6.Text = "px";
             // 
             // nmPixelEditorDrawingBrushSize
             // 
             this.nmPixelEditorDrawingBrushSize.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
             | System.Windows.Forms.AnchorStyles.Right)));
-            this.nmPixelEditorDrawingBrushSize.Location = new System.Drawing.Point(108, 130);
+            this.nmPixelEditorDrawingBrushSize.Location = new System.Drawing.Point(125, 130);
             this.nmPixelEditorDrawingBrushSize.Maximum = new decimal(new int[] {
             200,
             0,
@@ -1934,7 +1951,7 @@ namespace UVtools.GUI
             0,
             0});
             this.nmPixelEditorDrawingBrushSize.Name = "nmPixelEditorDrawingBrushSize";
-            this.nmPixelEditorDrawingBrushSize.Size = new System.Drawing.Size(224, 24);
+            this.nmPixelEditorDrawingBrushSize.Size = new System.Drawing.Size(207, 24);
             this.nmPixelEditorDrawingBrushSize.TabIndex = 5;
             this.nmPixelEditorDrawingBrushSize.Value = new decimal(new int[] {
             1,
@@ -1947,9 +1964,9 @@ namespace UVtools.GUI
             this.label3.AutoSize = true;
             this.label3.Location = new System.Drawing.Point(7, 133);
             this.label3.Name = "label3";
-            this.label3.Size = new System.Drawing.Size(84, 18);
+            this.label3.Size = new System.Drawing.Size(112, 18);
             this.label3.TabIndex = 4;
-            this.label3.Text = "Brush area:";
+            this.label3.Text = "Brush diameter:";
             // 
             // panel3
             // 
@@ -1986,9 +2003,9 @@ namespace UVtools.GUI
             | System.Windows.Forms.AnchorStyles.Right)));
             this.cbPixelEditorDrawingBrushShape.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
             this.cbPixelEditorDrawingBrushShape.FormattingEnabled = true;
-            this.cbPixelEditorDrawingBrushShape.Location = new System.Drawing.Point(108, 98);
+            this.cbPixelEditorDrawingBrushShape.Location = new System.Drawing.Point(125, 98);
             this.cbPixelEditorDrawingBrushShape.Name = "cbPixelEditorDrawingBrushShape";
-            this.cbPixelEditorDrawingBrushShape.Size = new System.Drawing.Size(258, 26);
+            this.cbPixelEditorDrawingBrushShape.Size = new System.Drawing.Size(241, 26);
             this.cbPixelEditorDrawingBrushShape.TabIndex = 0;
             this.cbPixelEditorDrawingBrushShape.SelectedIndexChanged += new System.EventHandler(this.EventSelectedIndexChanged);
             // 
@@ -2755,6 +2772,18 @@ namespace UVtools.GUI
             this.lbActualLayer.TabIndex = 9;
             this.lbActualLayer.Text = "?";
             // 
+            // tbLayer
+            // 
+            this.tbLayer.Dock = System.Windows.Forms.DockStyle.Right;
+            this.tbLayer.Location = new System.Drawing.Point(93, 0);
+            this.tbLayer.Margin = new System.Windows.Forms.Padding(0);
+            this.tbLayer.Name = "tbLayer";
+            this.tbLayer.Orientation = System.Windows.Forms.Orientation.Vertical;
+            this.tbLayer.Size = new System.Drawing.Size(45, 557);
+            this.tbLayer.TabIndex = 8;
+            this.tbLayer.TickStyle = System.Windows.Forms.TickStyle.TopLeft;
+            this.tbLayer.ValueChanged += new System.EventHandler(this.ValueChanged);
+            // 
             // lbInitialLayer
             // 
             this.lbInitialLayer.Dock = System.Windows.Forms.DockStyle.Fill;
@@ -2845,35 +2874,6 @@ namespace UVtools.GUI
             this.mouseHoldTimer.Interval = 1000;
             this.mouseHoldTimer.Tick += new System.EventHandler(this.EventTimerTick);
             // 
-            // lbLayerImageTooltipOverlay
-            // 
-            this.lbLayerImageTooltipOverlay.AutoSize = true;
-            this.lbLayerImageTooltipOverlay.BackColor = System.Drawing.Color.Transparent;
-            this.lbLayerImageTooltipOverlay.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
-            this.lbLayerImageTooltipOverlay.CausesValidation = false;
-            this.lbLayerImageTooltipOverlay.Location = new System.Drawing.Point(13, 37);
-            this.lbLayerImageTooltipOverlay.Name = "lbLayerImageTooltipOverlay";
-            this.lbLayerImageTooltipOverlay.Opacity = ((byte)(210));
-            this.lbLayerImageTooltipOverlay.Padding = new System.Windows.Forms.Padding(10);
-            this.lbLayerImageTooltipOverlay.Size = new System.Drawing.Size(80, 40);
-            this.lbLayerImageTooltipOverlay.TabIndex = 8;
-            this.lbLayerImageTooltipOverlay.Text = "Overlay";
-            this.lbLayerImageTooltipOverlay.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
-            this.lbLayerImageTooltipOverlay.TransparentBackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(255)))), ((int)(((byte)(192)))));
-            this.lbLayerImageTooltipOverlay.Visible = false;
-            // 
-            // tbLayer
-            // 
-            this.tbLayer.Dock = System.Windows.Forms.DockStyle.Right;
-            this.tbLayer.Location = new System.Drawing.Point(93, 0);
-            this.tbLayer.Margin = new System.Windows.Forms.Padding(0);
-            this.tbLayer.Name = "tbLayer";
-            this.tbLayer.Orientation = System.Windows.Forms.Orientation.Vertical;
-            this.tbLayer.Size = new System.Drawing.Size(45, 557);
-            this.tbLayer.TabIndex = 8;
-            this.tbLayer.TickStyle = System.Windows.Forms.TickStyle.TopLeft;
-            this.tbLayer.ValueChanged += new System.EventHandler(this.ValueChanged);
-            // 
             // FrmMain
             // 
             this.AllowDrop = true;
@@ -2980,8 +2980,8 @@ namespace UVtools.GUI
             this.panelLayerNavigation.ResumeLayout(false);
             this.panelLayerNavigation.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)(this.pbTrackerIssues)).EndInit();
-            this.panel2.ResumeLayout(false);
             ((System.ComponentModel.ISupportInitialize)(this.tbLayer)).EndInit();
+            this.panel2.ResumeLayout(false);
             this.ResumeLayout(false);
             this.PerformLayout();
 
diff --git a/UVtools.GUI/FrmMain.cs b/UVtools.GUI/FrmMain.cs
index 41a0200..12867f6 100644
--- a/UVtools.GUI/FrmMain.cs
+++ b/UVtools.GUI/FrmMain.cs
@@ -11,6 +11,7 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Drawing;
 using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
 using System.IO;
 using System.Linq;
 using System.Net;
@@ -1490,7 +1491,7 @@ namespace UVtools.GUI
             btnLayerROI.Enabled = !roi.IsEmpty;
         }
 
-        private void pbLayer_Zoomed(object sender, Cyotek.Windows.Forms.ImageBoxZoomEventArgs e)
+        private void pbLayer_Zoomed(object sender, ImageBoxZoomEventArgs e)
         {
             if (SupressLayerZoomEvent) return;
             AddLogVerbose($"Zoomed from {e.OldZoom} to {e.NewZoom}");
@@ -1506,6 +1507,11 @@ namespace UVtools.GUI
                 tsLayerImageZoomLock.Visible = false;
             }
 
+            if (pbLayer.Cursor.Tag is string str || ReferenceEquals(pbLayer.Cursor, pixelEditCursor))
+            {
+                UpdatePixelEditorCursor();
+            }
+
             // Refresh the layer to properly render the crosshair at various zoom transitions
             if (btnLayerImageShowCrosshairs.Checked &&
                 !ReferenceEquals(Issues, null) &&
@@ -1557,14 +1563,16 @@ namespace UVtools.GUI
             }
             
             if ((ModifierKeys & Keys.Shift) == 0) return;
-            if (_lastPixelMouseLocation == e.Location) return;
-            _lastPixelMouseLocation = e.Location;
+
+            if (_lastPixelMouseLocation == location) return;
+            _lastPixelMouseLocation = location;
+            
 
             // Bail here if we're not in a draw operation, if the mouse button is not either
             // left or right, or if the location of the mouse pointer is not within the image.
             if (tabControlPixelEditor.SelectedIndex != (int) PixelOperation.PixelOperationType.Drawing) return;
             if (!btnLayerImagePixelEdit.Checked || (e.Button & MouseButtons.Middle) != 0) return;
-            if (!pbLayer.IsPointInImage(e.Location)) return;
+            //if (!pbLayer.IsPointInImage(e.Location)) return;
 
             if (e.Button == MouseButtons.Right)
             {
@@ -2814,8 +2822,8 @@ namespace UVtools.GUI
             {
                 // This event repeats for as long as the key is pressed, so if we've
                 // already set the cursor from a previous key down event, just return.
-                if (pbLayer.Cursor == pixelEditCursor || pbLayer.Cursor == Cursors.Cross
-                     || pbLayer.Cursor == Cursors.Hand || pbLayer.SelectionMode == ImageBoxSelectionMode.Rectangle) return;
+                if (!ReferenceEquals(pbLayer.Cursor.Tag, null) || pbLayer.Cursor == pixelEditCursor || pbLayer.Cursor == Cursors.Cross
+                                                             || pbLayer.Cursor == Cursors.Hand || pbLayer.SelectionMode == ImageBoxSelectionMode.Rectangle) return;
 
                 // Pixel Edit is active, Shift is down, and the cursor is over the image region.
                 if (pbLayer.ClientRectangle.Contains(pbLayer.PointToClient(MousePosition)))
@@ -2824,10 +2832,12 @@ namespace UVtools.GUI
                     {
                         if (btnLayerImagePixelEdit.Checked)
                         {
-                            pbLayer.Cursor = pixelEditCursor;
                             pbLayer.PanMode = ImageBoxPanMode.None;
                             lbLayerImageTooltipOverlay.Text = "Pixel editing is on:\n" +
-                                                       "» Click over a pixel to draw";
+                                                       "» Click over a pixel to draw\n" +
+                                                       "» Hold CTRL to clear pixels";
+
+                            UpdatePixelEditorCursor();
                         }
                         else
                         {
@@ -2868,7 +2878,7 @@ namespace UVtools.GUI
             // of which form has focus when shift is released.
             if (ReferenceEquals(sender, this))
             {
-                if (e.KeyCode == Keys.ShiftKey || e.KeyCode == Keys.ControlKey)
+                if (e.KeyCode == Keys.ShiftKey || ((ModifierKeys & Keys.Shift) == 0 && e.KeyCode == Keys.ControlKey))
                 {
                     pbLayer.Cursor = Cursors.Default;
                     pbLayer.PanMode = ImageBoxPanMode.Left;
@@ -3346,6 +3356,19 @@ namespace UVtools.GUI
             //var point = pbLayer.PointToImage(location);
 
             Point realLocation = GetTransposedPoint(location);
+
+            if ((ModifierKeys & Keys.Control) != 0)
+            {
+                var removedItems = PixelHistory.Items.RemoveAll(item =>
+                {
+                    Rectangle rect = new Rectangle(item.Location, item.Size);
+                    rect.X -= item.Size.Width / 2;
+                    rect.Y -= item.Size.Height / 2;
+                    return rect.Contains(realLocation);
+                });
+                if(removedItems > 0) ShowLayer();
+                return;
+            }
             
             PixelOperation operation = null;
             Bitmap bmp = pbLayer.Image as Bitmap;
@@ -4306,6 +4329,94 @@ namespace UVtools.GUI
             return true;
         }
 
+        readonly SolidBrush _pixelEditorCursorBrush = new SolidBrush(Color.FromArgb(150, 120, 255, 255));
+        const byte _pixelEditorCursorMinDiamater = 10;
+        public void UpdatePixelEditorCursor()
+        {
+            Bitmap bitmap = null;
+
+            if (tabControlPixelEditor.SelectedIndex == (byte)PixelOperation.PixelOperationType.Drawing)
+            {
+                PixelDrawing.BrushShapeType shapeType =
+                    (PixelDrawing.BrushShapeType)cbPixelEditorDrawingBrushShape.SelectedIndex;
+
+                ushort brushSize = (ushort)nmPixelEditorDrawingBrushSize.Value;
+                short thickness = (short)(nmPixelEditorDrawingThickness.Value == 0
+                    ? 1
+                    : nmPixelEditorDrawingThickness.Value);
+
+                int diameter = (brushSize * pbLayer.Zoom / 100);
+                if (brushSize > 1 && diameter >= _pixelEditorCursorMinDiamater)
+                {
+                    bitmap = new Bitmap(diameter, diameter, PixelFormat.Format32bppArgb);
+                    using (Graphics gr = Graphics.FromImage(bitmap))
+                    {
+                        gr.SmoothingMode = SmoothingMode.AntiAlias;
+                        gr.CompositingMode = CompositingMode.SourceCopy;
+
+                        switch (shapeType)
+                        {
+                            case PixelDrawing.BrushShapeType.Rectangle:
+                                if (thickness >= 1)
+                                {
+                                    gr.DrawRectangle(new Pen(_pixelEditorCursorBrush, thickness), 0, 0, diameter, diameter);
+                                }
+                                else
+                                {
+                                    gr.FillRectangle(_pixelEditorCursorBrush, 0, 0, diameter, diameter);
+                                }
+                                break;
+                            case PixelDrawing.BrushShapeType.Circle:
+                                if (thickness >= 1)
+                                {
+                                    gr.DrawEllipse(new Pen(_pixelEditorCursorBrush, thickness), 0, 0, diameter, diameter);
+                                }
+                                else
+                                {
+                                    gr.FillEllipse(_pixelEditorCursorBrush, 0, 0, diameter, diameter);
+                                }
+                                break;
+                        }
+                    }
+                }
+            }
+            /*else if (tabControlPixelEditor.SelectedIndex == (byte)PixelOperation.PixelOperationType.Text)
+            {
+                var text = tbPixelEditorTextText.Text;
+                if (string.IsNullOrEmpty(text) || nmPixelEditorTextFontScale.Value < 0.2m) return;
+
+                LineType lineType = (LineType)cbPixelEditorTextLineType.SelectedItem;
+                FontFace fontFace = (FontFace)cbPixelEditorTextFontFace.SelectedItem;
+                double scale = (double) nmPixelEditorTextFontScale.Value * pbLayer.Zoom / 100;
+                int thickness = (int) nmPixelEditorTextThickness.Value;
+                int baseLine = 0;
+                var size = CvInvoke.GetTextSize(text, fontFace, scale, thickness, ref baseLine);
+                mat = new Mat(size, DepthType.Cv8U, 4);
+                CvInvoke.PutText(mat, text, new Point(0,0), fontFace, scale, new MCvScalar(255,100,255, 255), thickness, lineType, cbPixelEditorTextMirror.Checked);
+            }*/
+            else if (tabControlPixelEditor.SelectedIndex == (byte)PixelOperation.PixelOperationType.Supports || tabControlPixelEditor.SelectedIndex == (byte)PixelOperation.PixelOperationType.DrainHole)
+            {
+                var diameter = (int)(
+                    (tabControlPixelEditor.SelectedIndex == (byte)PixelOperation.PixelOperationType.Supports ? 
+                        nmPixelEditorSupportsTipDiameter.Value : nmPixelEditorDrainHoleDiameter.Value) 
+                    * pbLayer.Zoom / 100);
+
+                if (diameter >= _pixelEditorCursorMinDiamater)
+                {
+                    bitmap = new Bitmap(diameter, diameter, PixelFormat.Format32bppArgb);
+                    using (Graphics gr = Graphics.FromImage(bitmap))
+                    {
+                        gr.SmoothingMode = SmoothingMode.AntiAlias;
+                        gr.CompositingMode = CompositingMode.SourceCopy;
+                        gr.FillEllipse(_pixelEditorCursorBrush, 0, 0, diameter, diameter);
+                    }
+                }
+            }
+            
+
+            pbLayer.Cursor = bitmap is null ? pixelEditCursor : new Cursor(bitmap.GetHicon()) { Tag = "Custom" };
+        }
+
         public bool CanGlobalHotKey
             => !(ActiveControl is TextBox 
                  || ActiveControl is ComboBox 
diff --git a/UVtools.GUI/FrmMain.resx b/UVtools.GUI/FrmMain.resx
index b7f2712..625fa70 100644
--- a/UVtools.GUI/FrmMain.resx
+++ b/UVtools.GUI/FrmMain.resx
@@ -174,7 +174,7 @@
         AAEAAAD/////AQAAAAAAAAAMAgAAAFdTeXN0ZW0uV2luZG93cy5Gb3JtcywgVmVyc2lvbj00LjAuMC4w
         LCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWI3N2E1YzU2MTkzNGUwODkFAQAAACZTeXN0
         ZW0uV2luZG93cy5Gb3Jtcy5JbWFnZUxpc3RTdHJlYW1lcgEAAAAERGF0YQcCAgAAAAkDAAAADwMAAABk
-        FAAAAk1TRnQBSQFMAgEBBgEAARABDAEQAQwBEAEAARABAAT/ASEBAAj/AUIBTQE2BwABNgMAASgDAAFA
+        FAAAAk1TRnQBSQFMAgEBBgEAARgBDAEYAQwBEAEAARABAAT/ASEBAAj/AUIBTQE2BwABNgMAASgDAAFA
         AwABIAMAAQEBAAEgBgABIC4AAxgBIgMwAUsDMAFMAzIBUDMAAQEDJAE2AysBQqwAAyIBMQNWAbkDXQHi
         AwAB/wMAAf8BKgEtASgB/gNTAawDTQGVAwABARgAAwkBDAMzAVIDUAGdA1cB6AMAAf4DKwH8Ay8BSqQA
         AyEBMANZAewBKwEuASkB+gNRAfcDUgH0A1MB8QNIAfYDQQH5AwAB/wNPAZsDAAEBCAADFQEdAz8BbgNV