* UIButton：增加ShowFocusLine，可获得焦点并显示

SunnyUI.Demo/Controls/FButton.Designer.cs

@@ -160,6 +160,7 @@
             this.uiButton1.Name = "uiButton1";
             this.uiButton1.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(216)))), ((int)(((byte)(219)))), ((int)(((byte)(227)))));
             this.uiButton1.RectHoverColor = System.Drawing.Color.FromArgb(((int)(((byte)(197)))), ((int)(((byte)(222)))), ((int)(((byte)(255)))));
+            this.uiButton1.ShowFocusLine = true;
             this.uiButton1.Size = new System.Drawing.Size(100, 35);
             this.uiButton1.Style = Sunny.UI.UIStyle.White;
             this.uiButton1.StyleCustomMode = true;
@@ -172,6 +173,7 @@
             this.uiButton2.Font = new System.Drawing.Font("微软雅黑", 12F);
             this.uiButton2.Location = new System.Drawing.Point(144, 50);
             this.uiButton2.Name = "uiButton2";
+            this.uiButton2.ShowFocusLine = true;
             this.uiButton2.Size = new System.Drawing.Size(100, 35);
             this.uiButton2.StyleCustomMode = true;
             this.uiButton2.TabIndex = 1;
@@ -189,6 +191,7 @@
             this.uiButton3.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(110)))), ((int)(((byte)(190)))), ((int)(((byte)(40)))));
             this.uiButton3.RectHoverColor = System.Drawing.Color.FromArgb(((int)(((byte)(136)))), ((int)(((byte)(202)))), ((int)(((byte)(81)))));
             this.uiButton3.RectPressColor = System.Drawing.Color.FromArgb(((int)(((byte)(100)))), ((int)(((byte)(168)))), ((int)(((byte)(35)))));
+            this.uiButton3.ShowFocusLine = true;
             this.uiButton3.Size = new System.Drawing.Size(100, 35);
             this.uiButton3.Style = Sunny.UI.UIStyle.Green;
             this.uiButton3.StyleCustomMode = true;
@@ -207,6 +210,7 @@
             this.uiButton4.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(230)))), ((int)(((byte)(80)))), ((int)(((byte)(80)))));
             this.uiButton4.RectHoverColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(127)))), ((int)(((byte)(128)))));
             this.uiButton4.RectPressColor = System.Drawing.Color.FromArgb(((int)(((byte)(202)))), ((int)(((byte)(87)))), ((int)(((byte)(89)))));
+            this.uiButton4.ShowFocusLine = true;
             this.uiButton4.Size = new System.Drawing.Size(100, 35);
             this.uiButton4.Style = Sunny.UI.UIStyle.Red;
             this.uiButton4.StyleCustomMode = true;
@@ -225,6 +229,7 @@
             this.uiButton5.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(220)))), ((int)(((byte)(155)))), ((int)(((byte)(40)))));
             this.uiButton5.RectHoverColor = System.Drawing.Color.FromArgb(((int)(((byte)(223)))), ((int)(((byte)(174)))), ((int)(((byte)(86)))));
             this.uiButton5.RectPressColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(137)))), ((int)(((byte)(43)))));
+            this.uiButton5.ShowFocusLine = true;
             this.uiButton5.Size = new System.Drawing.Size(100, 35);
             this.uiButton5.Style = Sunny.UI.UIStyle.Orange;
             this.uiButton5.StyleCustomMode = true;
@@ -243,6 +248,7 @@
             this.uiButton6.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(140)))), ((int)(((byte)(140)))), ((int)(((byte)(140)))));
             this.uiButton6.RectHoverColor = System.Drawing.Color.FromArgb(((int)(((byte)(158)))), ((int)(((byte)(160)))), ((int)(((byte)(165)))));
             this.uiButton6.RectPressColor = System.Drawing.Color.FromArgb(((int)(((byte)(121)))), ((int)(((byte)(123)))), ((int)(((byte)(129)))));
+            this.uiButton6.ShowFocusLine = true;
             this.uiButton6.Size = new System.Drawing.Size(100, 35);
             this.uiButton6.Style = Sunny.UI.UIStyle.Gray;
             this.uiButton6.StyleCustomMode = true;

SunnyUI/Controls/UIButton.cs

@@ -23,6 +23,7 @@
 using System;
 using System.ComponentModel;
 using System.Drawing;
+using System.Drawing.Drawing2D;
 using System.Windows.Forms;
 
 // ReSharper disable All
@@ -33,7 +34,7 @@ namespace Sunny.UI
     [DefaultEvent("Click")]
     [DefaultProperty("Text")]
     [ToolboxItem(true)]
-    public class UIButton : UIControl
+    public class UIButton : UIControl, IButtonControl
     {
         public UIButton()
         {
@@ -65,6 +66,12 @@ namespace Sunny.UI
             }
         }
 
+        protected override void OnClick(EventArgs e)
+        {
+            Focus();
+            base.OnClick(e);
+        }
+
         private bool showTips = false;
 
         [Description("是否显示角标"), Category("自定义")]
@@ -136,6 +143,19 @@ namespace Sunny.UI
                 e.Graphics.FillEllipse(UIColor.Red, x, y, sfMax, sfMax);
                 e.Graphics.DrawString(TipsText, TipsFont, Color.White, x + sfMax / 2.0f - sf.Width / 2.0f, y + sfMax / 2.0f - sf.Height / 2.0f);
             }
+
+            if (Focused && ShowFocusLine)
+            {
+                Rectangle rect = new Rectangle(2, 2, Width - 5, Height - 5);
+                var path = rect.CreateRoundedRectanglePath(Radius);
+                using (Pen pn = new Pen(ForeColor))
+                {
+                    pn.DashStyle = DashStyle.Dot;
+                    e.Graphics.DrawPath(pn, path);
+                }
+
+                path.Dispose();
+            }
         }
 
         private bool selected;
@@ -304,5 +324,25 @@ namespace Sunny.UI
             IsHover = true;
             Invalidate();
         }
+
+        public void NotifyDefault(bool value)
+        {
+        }
+
+        [DefaultValue(DialogResult.None)]
+        public DialogResult DialogResult { get; set; } = DialogResult.None;
+
+        protected override void OnKeyDown(KeyEventArgs e)
+        {
+            if (Focused && e.KeyCode == Keys.Space)
+            {
+                PerformClick();
+            }
+
+            base.OnKeyDown(e);
+        }
+
+        [DefaultValue(false)]
+        public bool ShowFocusLine { get; set; }
     }
 }

SunnyUI/Controls/UIControl.cs

@@ -694,5 +694,21 @@ namespace Sunny.UI
                 Invalidate();
             }
         }
+
+        /// <summary>引发 <see cref="E:System.Windows.Forms.Control.GotFocus" /> 事件。</summary>
+        /// <param name="e">包含事件数据的 <see cref="T:System.EventArgs" />。</param>
+        protected override void OnGotFocus(EventArgs e)
+        {
+            base.OnGotFocus(e);
+            this.Invalidate();
+        }
+
+        /// <summary>引发 <see cref="M:System.Windows.Forms.ButtonBase.OnLostFocus(System.EventArgs)" /> 事件。</summary>
+        /// <param name="e">包含事件数据的 <see cref="T:System.EventArgs" />。</param>
+        protected override void OnLostFocus(EventArgs e)
+        {
+            base.OnLostFocus(e);
+            this.Invalidate();
+        }
     }
 }

Updates.txt

@@ -1,5 +1,8 @@
 + 增加； - 删除； * 修改 
 
+2020.06.23
+* UIButton：增加ShowFocusLine，可获得焦点并显示
+
 2020.06.22
 * UIForm：增加WindowStateChange事件判断WindowState状态，调整ShowFullScreen全屏显示