using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace Hydro.MapUI.WindowsForm
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{
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public partial class ColorPickerWinForm : Control
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{
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private Color _color;
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public Color Color
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{
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get { return _color; }
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set
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{
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_color = value;
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Invalidate();
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}
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}
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private bool _readonly;
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public bool ReadOnly
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{
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get { return _readonly; }
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set
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{
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_readonly = value;
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Invalidate();
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}
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}
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private BorderStyle _borderStyle = BorderStyle.None;
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public BorderStyle BorderStyle
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{
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get { return _borderStyle; }
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set
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{
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_borderStyle = value;
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Invalidate();
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}
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}
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protected override void OnClick(EventArgs e)
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{
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if (ReadOnly) { return; }
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base.OnClick(e);
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ColorDialog colorDialog = new ColorDialog();
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if (colorDialog.ShowDialog() == DialogResult.OK)
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{
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Color = colorDialog.Color;
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}
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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// 绘制边框
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if (_borderStyle != BorderStyle.None)
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{
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ControlPaint.DrawBorder(e.Graphics, ClientRectangle,
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ForeColor, ButtonBorderStyleFromBorderStyle(_borderStyle));
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}
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// 绘制颜色矩形在左边
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Rectangle colorRect = new Rectangle(1, 1, Height - 2, Height - 2);
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using (Brush brush = new SolidBrush(_color))
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{
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e.Graphics.FillRectangle(brush, colorRect);
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}
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// 显示颜色名称和RGB值在右边
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string colorName = _color.Name;
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string displayText = $"{colorName} ({_color.R}, {_color.G}, {_color.B})";
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using (Brush brush = new SolidBrush(ForeColor))
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{
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SizeF textSize = e.Graphics.MeasureString(displayText, Font);
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PointF textLocation = new PointF(Height + 10, (Height - textSize.Height) / 2);
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e.Graphics.DrawString(displayText, Font, brush, textLocation);
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}
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}
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private ButtonBorderStyle ButtonBorderStyleFromBorderStyle(BorderStyle style)
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{
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switch (style)
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{
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case BorderStyle.FixedSingle:
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return ButtonBorderStyle.Solid;
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case BorderStyle.Fixed3D:
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return ButtonBorderStyle.Inset;
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default:
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return ButtonBorderStyle.None;
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}
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}
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}
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}
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