Merge pull request #41 from Pharap/add-invert-action

Add Invert Action

Author: Pharap

ABSpriteEditor/ABSpriteEditor/ABSpriteEditor.csproj

@@ -367,6 +367,8 @@
   </ItemGroup>
   <ItemGroup>
     <Content Include="FrameIcon.ico" />
+    <None Include="Resources\UI\SpriteEditor\Actions\InvertIcon32.png" />
+    <None Include="Resources\UI\SpriteEditor\Actions\InvertIcon16.png" />
     <None Include="Resources\UI\SpriteEditor\Actions\NudgeUp32.png" />
     <None Include="Resources\UI\SpriteEditor\Actions\NudgeUp16.png" />
     <None Include="Resources\UI\SpriteEditor\Actions\NudgeRight32.png" />

ABSpriteEditor/ABSpriteEditor/Controls/ActionPanel.Designer.cs

@@ -196,6 +196,23 @@ public void RollDown()
             this.OnAfterAction(EventArgs.Empty);
         }
 
+        public void Invert()
+        {
+            // If there is no image
+            if (this.Image == null)
+                // Exit early
+                return;
+
+            // Raise before action event
+            this.OnBeforeAction(EventArgs.Empty);
+
+            // Invert the image
+            BitmapHelper.Invert(this.Image);
+
+            // Raise after action event
+            this.OnAfterAction(EventArgs.Empty);
+        }
+
         #endregion
 
         #region Event Handlers
@@ -279,6 +296,11 @@ private void rollDownToolStripButton_Click(object sender, EventArgs e)
             this.RollDown();
         }
 
+        private void invertToolStripButton_Click(object sender, EventArgs e)
+        {
+            this.Invert();
+        }
+
         #endregion
     }
 }

ABSpriteEditor/ABSpriteEditor/Controls/ActionPanel.cs

@@ -382,4 +382,10 @@
   <data name="NudgeUp32" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\UI\SpriteEditor\Actions\NudgeUp32.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="InvertIcon16" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\UI\SpriteEditor\Actions\InvertIcon16.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="InvertIcon32" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\UI\SpriteEditor\Actions\InvertIcon32.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
 </root>

ABSpriteEditor/ABSpriteEditor/Properties/Resources.Designer.cs

@@ -642,5 +642,33 @@ private static void FloodFill(Bitmap bitmap, Point point, Color fillColour, Colo
         }
 
         #endregion
+
+        #region Inversion
+
+        public static Color Invert(Color colour)
+        {
+            var alpha = colour.A;
+            var red = (byte.MaxValue - colour.R);
+            var green = (byte.MaxValue - colour.G);
+            var blue = (byte.MaxValue - colour.B);
+
+            return Color.FromArgb(alpha, red, green, blue);
+        }
+
+        public static void Invert(Bitmap bitmap)
+        {
+            // Iterate through all pixels of the bitmap
+            for (int y = 0; y < bitmap.Height; ++y)
+                for (int x = 0; x < bitmap.Width; ++x)
+                {
+                    // Retrieve the value of the current pixe
+                    var colour = bitmap.GetPixel(x, y);
+
+                    // Set the current pixel to the inverse of the retrieved value
+                    bitmap.SetPixel(x, y, Invert(colour));
+                }
+        }
+
+        #endregion
     }
 }