* UIRadioButtonGroup: 重写UIRadioButtonGroup

SunnyUI/Controls/UIRadioButtonGroup.cs

@@ -23,6 +23,7 @@
  * 2022-11-21: V3.2.9 修复未显示时切换节点文本为空的问题
  * 2023-04-22: V3.3.5 设置选择项ForeColor
  * 2023-06-27: V3.3.9 内置条目关联值由Tag改为TagString
+ * 2023-11-09: V3.5.2 重写UIRadioButtonGroup
 ******************************************************************************/
 
 using System;
@@ -45,18 +46,38 @@ namespace Sunny.UI
         public UIRadioButtonGroup()
         {
             items.CountChange += Items_CountChange;
+            ForeColor = UIStyles.Blue.CheckBoxForeColor;
+            checkBoxColor = UIStyles.Blue.CheckBoxColor;
+            hoverColor = UIStyles.Blue.ListItemHoverColor;
         }
 
-        protected override void OnFontChanged(EventArgs e)
+        private Color checkBoxColor;
-        {
+        private Color hoverColor;
-            base.OnFontChanged(e);
 
-            if (DefaultFontSize < 0)
+        /// <summary>
+        /// 设置主题样式
+        /// </summary>
+        /// <param name="uiColor">主题样式</param>
+        public override void SetStyleColor(UIBaseStyle uiColor)
+        {
+            base.SetStyleColor(uiColor);
+            checkBoxColor = uiColor.CheckBoxColor;
+            ForeColor = uiColor.CheckBoxForeColor;
+            hoverColor = uiColor.ListItemHoverColor;
+        }
+
+        /// <summary>
+        /// 填充颜色，当值为背景色或透明色或空值则不填充
+        /// </summary>
+        [Description("填充颜色"), Category("SunnyUI")]
+        [DefaultValue(typeof(Color), "80, 160, 255")]
+        public Color RadioButtonColor
+        {
+            get => checkBoxColor;
+            set
             {
-                foreach (var item in buttons)
+                checkBoxColor = value;
-                {
+                Invalidate();
-                    item.Font = Font;
-                }
             }
         }
 
@@ -65,28 +86,12 @@ namespace Sunny.UI
             Invalidate();
         }
 
-        ~UIRadioButtonGroup()
-        {
-            ClearButtons();
-        }
-
-        private void ClearButtons()
-        {
-            foreach (var button in buttons)
-            {
-                button.Hide();
-                button.Dispose();
-            }
-
-            buttons.Clear();
-        }
-
         public void Clear()
         {
             Items.Clear();
-            ClearButtons();
             SelectedIndex = -1;
             Invalidate();
+            ValueChanged(this, -1, "");
         }
 
         [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
@@ -98,42 +103,6 @@ namespace Sunny.UI
 
         private readonly UIObjectCollection items = new UIObjectCollection();
 
-        private void CreateBoxes()
-        {
-            if (Items.Count == 0) return;
-            if (Items.Count != buttons.Count)
-            {
-                ClearButtons();
-
-                for (int i = 0; i < Items.Count; i++)
-                {
-                    UIRadioButton button = new UIRadioButton
-                    {
-                        BackColor = Color.Transparent,
-                        Font = Font,
-                        Parent = this,
-                        TagString = i.ToString(),
-                        Style = Style,
-                        Text = Items[i]?.ToString(),
-                        StyleCustomMode = StyleCustomMode,
-                        ForeColor = ForeColor
-                    };
-
-                    button.ValueChanged += Button_ValueChanged;
-                    buttons.Add(button);
-                }
-            }
-        }
-
-        protected override void AfterSetForeColor(Color color)
-        {
-            base.AfterSetForeColor(color);
-            foreach (var item in buttons)
-            {
-                item.ForeColor = color;
-            }
-        }
-
         /// <summary>
         /// 重载绘图
         /// </summary>
@@ -142,30 +111,124 @@ namespace Sunny.UI
         {
             base.OnPaint(e);
 
-            CreateBoxes();
+            if (Items.Count == 0) return;
+
+            if (activeIndex >= 0 && CheckBoxRects.ContainsKey(activeIndex))
+            {
+                e.Graphics.FillRectangle(hoverColor, CheckBoxRects[activeIndex]);
+            }
 
             int startX = StartPos.X;
             int startY = TitleTop + StartPos.Y;
+
             for (int i = 0; i < Items.Count; i++)
             {
-                buttons[i].Text = Items[i].ToString();
+                string text = Items[i].ToString();
-
                 int rowIndex = i / ColumnCount;
                 int columnIndex = i % ColumnCount;
+                int left = startX + ItemSize.Width * columnIndex + ColumnInterval * columnIndex;
+                int top = startY + ItemSize.Height * rowIndex + RowInterval * rowIndex;
+                Rectangle rect = new Rectangle(left, top, ItemSize.Width, ItemSize.Height);
+                if (CheckBoxRects.NotContainsKey(i))
+                    CheckBoxRects.Add(i, rect);
+                else
+                    CheckBoxRects[i] = rect;
+
+                int ImageSize = RadioButtonSize;
+
+                //图标
+                top = rect.Top + (rect.Height - ImageSize) / 2;
+                left = rect.Left + 6;
+                Color color = Enabled ? checkBoxColor : foreDisableColor;
+
+                if (SelectedIndex == i)
+                {
+                    e.Graphics.FillEllipse(color, left, top, ImageSize, ImageSize);
+                    float pointSize = ImageSize - 4;
+                    e.Graphics.FillEllipse(BackColor.IsValid() ? BackColor : Color.White,
+                        left + ImageSize / 2.0f - pointSize / 2.0f,
+                        top + ImageSize / 2.0f - pointSize / 2.0f,
+                        pointSize, pointSize);
+
+                    pointSize = ImageSize - 8;
+                    e.Graphics.FillEllipse(color,
+                        left + ImageSize / 2.0f - pointSize / 2.0f,
+                        top + ImageSize / 2.0f - pointSize / 2.0f,
+                        pointSize, pointSize);
+                }
+                else
+                {
+                    using Pen pn = new Pen(color, 2);
+                    e.Graphics.SetHighQuality();
+                    e.Graphics.DrawEllipse(pn, left + 1, top + 1, ImageSize - 2, ImageSize - 2);
+                    e.Graphics.SetDefaultQuality();
+                }
+
+                e.Graphics.DrawString(text, Font, ForeColor, rect, ContentAlignment.MiddleLeft, ImageSize + 10, 0);
 
-                buttons[i].Left = startX + ItemSize.Width * columnIndex + ColumnInterval * columnIndex;
-                buttons[i].Top = startY + ItemSize.Height * rowIndex + RowInterval * rowIndex;
-                buttons[i].Size = ItemSize;
-                buttons[i].Show();
             }
         }
 
-        private void Button_ValueChanged(object sender, bool value)
+        private Dictionary<int, bool> CheckStates = new Dictionary<int, bool>();
+        private Dictionary<int, Rectangle> CheckBoxRects = new Dictionary<int, Rectangle>();
+
+        int activeIndex = -1;
+        private int _imageSize = 16;
+
+        [DefaultValue(16)]
+        [Description("图标大小"), Category("SunnyUI")]
+        [Browsable(false)]
+        public int RadioButtonSize
         {
-            UIRadioButton button = (UIRadioButton)sender;
+            get => _imageSize;
-            if (value)
+            set
             {
-                SelectedIndex = button.TagString.ToInt();
+                _imageSize = Math.Max(value, 16);
+                _imageSize = Math.Min(value, 64);
+                Invalidate();
+            }
+        }
+
+        protected override void OnMouseMove(MouseEventArgs e)
+        {
+            base.OnMouseMove(e);
+
+            int index = -1;
+            foreach (var item in CheckBoxRects)
+            {
+                if (e.Location.InRect(item.Value))
+                {
+                    index = item.Key;
+                    break;
+                }
+            }
+
+            if (activeIndex != index)
+            {
+                activeIndex = index;
+                Invalidate();
+            }
+        }
+
+        protected override void OnMouseLeave(EventArgs e)
+        {
+            base.OnMouseLeave(e);
+
+            activeIndex = -1;
+            Invalidate();
+        }
+
+        protected override void OnMouseClick(MouseEventArgs e)
+        {
+            base.OnMouseClick(e);
+
+            foreach (var pair in CheckBoxRects)
+            {
+                if (e.Location.InRect(pair.Value) && pair.Key >= 0 && pair.Key < items.Count)
+                {
+                    SelectedIndex = pair.Key;
+                    Invalidate();
+                }
             }
         }
 
@@ -178,11 +241,6 @@ namespace Sunny.UI
             get => selectedIndex;
             set
             {
-                if (buttons.Count != Items.Count)
-                {
-                    CreateBoxes();
-                }
-
                 if (Items.Count == 0)
                 {
                     selectedIndex = -1;
@@ -191,28 +249,13 @@ namespace Sunny.UI
 
                 if (SelectedIndex != value)
                 {
-                    if (value >= 0 && value < buttons.Count)
+                    selectedIndex = value;
-                    {
+                    Invalidate();
-                        selectedIndex = value;
+                    ValueChanged?.Invoke(this, value, items.ContainsIndex(value) ? items[value].ToString() : "");
-                        buttons[value].Checked = true;
-                        ValueChanged?.Invoke(this, value, buttons[value].Text);
-                    }
                 }
             }
         }
 
-        public void SelectedNone()
-        {
-            foreach (var button in buttons)
-            {
-                button.Checked = false;
-            }
-
-            selectedIndex = -1;
-        }
-
-        private readonly List<UIRadioButton> buttons = new List<UIRadioButton>();
-
         private int columnCount = 1;
 
         [DefaultValue(1)]
@@ -227,9 +270,9 @@ namespace Sunny.UI
             }
         }
 
-        private Size itemSize = new Size(150, 35);
+        private Size itemSize = new Size(150, 29);
 
-        [DefaultValue(typeof(Size), "150, 35")]
+        [DefaultValue(typeof(Size), "150, 29")]
         [Description("列表项大小"), Category("SunnyUI")]
         public Size ItemSize
         {
@@ -255,9 +298,9 @@ namespace Sunny.UI
             }
         }
 
-        public int columnInterval;
+        public int columnInterval = 6;
 
-        [DefaultValue(0)]
+        [DefaultValue(6)]
         [Description("显示列间隔"), Category("SunnyUI")]
         public int ColumnInterval
         {
@@ -269,9 +312,9 @@ namespace Sunny.UI
             }
         }
 
-        private int rowInterval;
+        private int rowInterval = 2;
 
-        [DefaultValue(0)]
+        [DefaultValue(2)]
         [Description("显示行间隔"), Category("SunnyUI")]
         public int RowInterval
         {