boost(banner): Added Center Position

SoundSwitch/Framework/Banner/BannerPositionEnum.cs

@@ -21,6 +21,7 @@ public enum BannerPositionEnum
         TopRight = 2,
         BottomLeft = 3,
         BottomCenter = 4,
-        BottomRight = 5
+        BottomRight = 5,
+        Center = 6
     }
 }

SoundSwitch/Framework/Banner/BannerPositionFactory.cs

@@ -25,6 +25,7 @@ public class BannerPositionFactory : AbstractFactory<BannerPositionEnum, IPositi
                 new PositionTopLeft(),
                 new PositionTopCenter(),
                 new PositionTopRight(),
+                new PositionCenter(),
                 new PositionBottomLeft(),
                 new PositionBottomCenter(),
                 new PositionBottomRight()

SoundSwitch/Framework/Banner/Position/APosition.cs

@@ -22,6 +22,7 @@ internal class APosition
         public int PositionLeft(Screen screen) => screen.Bounds.X + 50;
         public int PositionBottom(Screen screen, int height, int offset) => screen.Bounds.Height - height - PositionTop(screen, 0) - offset;
         public int PositionRight(Screen screen, int width) => screen.Bounds.Width - width - PositionLeft(screen);
-        public int PositionCenter(Screen screen, int width) => (screen.Bounds.Width - width) / 2;
+        public int PositionCenterH(Screen screen, int width) => (screen.Bounds.Width - width) / 2;
+        public int PositionCenterV(Screen screen, int height) => (screen.Bounds.Height - height) / 2;
     }
 }

SoundSwitch/Framework/Banner/Position/PositionBottomCenter.cs

@@ -26,7 +26,7 @@ internal class PositionBottomCenter : APosition, IPosition
         public Point GetScreenPosition(Screen screen, int height, int width, int offset)
         {
             return new Point(
-                PositionCenter(screen, width),
+                PositionCenterH(screen, width),
                 PositionBottom(screen, height, offset)
                 );
         }

SoundSwitch/Framework/Banner/Position/PositionCenter.cs

@@ -0,0 +1,34 @@
+/********************************************************************
+ * Copyright (C) 2015-2017 Antoine Aflalo
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ ********************************************************************/
+
+using System.Drawing;
+using System.Windows.Forms;
+using SoundSwitch.Localization;
+
+namespace SoundSwitch.Framework.Banner.Position
+{
+    internal class PositionCenter : APosition, IPosition
+    {
+        public BannerPositionEnum TypeEnum => BannerPositionEnum.Center;
+        public string Label => SettingsStrings.position_option_center;
+
+        public Point GetScreenPosition(Screen screen, int height, int width, int offset)
+        {
+            return new Point(
+                PositionCenterH(screen, width),
+                PositionCenterV(screen, height)
+            );
+        }
+    }
+}

SoundSwitch/Framework/Banner/Position/PositionTopCenter.cs

@@ -26,7 +26,7 @@ internal class PositionTopCenter : APosition, IPosition
         public Point GetScreenPosition(Screen screen, int height, int width, int offset)
         {
             return new Point(
-                PositionCenter(screen, width),
+                PositionCenterH(screen, width),
                 PositionTop(screen, offset)
                 );
         }

SoundSwitch/Localization/SettingsStrings.resx

@@ -558,4 +558,7 @@ Restore the state of the system when the application is closed.</value>
   <data name="troubleshooting.desc" xml:space="preserve">
     <value>If you need any help or further troubleshooting with SoundSwitch, you can visit the Help Discussion or Community Discord link, or help support us by visiting the Donate link below.</value>
   </data>
+  <data name="position.option.center" xml:space="preserve">
+    <value>Center</value>
+  </data>
 </root>