优化按钮鼠标效果

HZH_Controls/HZH_Controls/Controls/Btn/UCBtnExt.cs

@@ -221,7 +221,7 @@ namespace HZH_Controls.Controls
                     if (FillColor != Color.Empty && FillColor != null)
                     {
                         m_cacheColor = this.FillColor;
-                        this.FillColor = Color.FromArgb(230, this.FillColor);
+                        this.FillColor = this.FillColor.ChangeColor(-0.2f);
                     }
                 }
             }

HZH_Controls/HZH_Controls/Helpers/ControlHelper.cs

@@ -1442,5 +1442,48 @@ namespace HZH_Controls
             // Return calculated graphics path 
             return graphicsPath;
         }
+
+        /// <summary>
+        /// 颜色加深
+        /// </summary>
+        /// <param name="color"></param>
+        /// <param name="correctionFactor">-1.0f <= correctionFactor <= 1.0f</param>
+        /// <returns></returns>
+        public static Color ChangeColor(this Color color, float correctionFactor)
+        {
+            float red = (float)color.R;
+            float green = (float)color.G;
+            float blue = (float)color.B;
+
+            if (correctionFactor < 0)
+            {
+                correctionFactor = 1 + correctionFactor;
+                red *= correctionFactor;
+                green *= correctionFactor;
+                blue *= correctionFactor;
+            }
+            else
+            {
+                red = (255 - red) * correctionFactor + red;
+                green = (255 - green) * correctionFactor + green;
+                blue = (255 - blue) * correctionFactor + blue;
+            }
+
+            if (red < 0) red = 0;
+
+            if (red > 255) red = 255;
+
+            if (green < 0) green = 0;
+
+            if (green > 255) green = 255;
+
+            if (blue < 0) blue = 0;
+
+            if (blue > 255) blue = 255;
+
+
+
+            return Color.FromArgb(color.A, (int)red, (int)green, (int)blue);
+        }
     }
 }