// *********************************
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// Message from Original Author:
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//
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// 2008 Jose Menendez Poo
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// Please give me credit if you use this code. It's all I ask.
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// Contact me for more info: menendezpoo@gmail.com
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// *********************************
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//
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// Original project from http://ribbon.codeplex.com/
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// Continue to support and maintain by http://officeribbon.codeplex.com/
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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namespace System.Windows.Forms
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{
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/// <summary>
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/// A RibbonButton that incorporates a <see cref="Color"/> property and
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/// draws this color below the displaying <see cref="Image"/> or <see cref="RibbonButton.SmallImage"/>
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/// </summary>
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public class RibbonColorChooser
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: RibbonButton
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{
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#region Fields
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private Color _color;
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#endregion
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#region Events
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/// <summary>
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/// Raised when the <see cref="Color"/> property has been changed
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/// </summary>
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public event EventHandler ColorChanged;
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#endregion
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#region Ctor
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public RibbonColorChooser()
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{
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_color = Color.Transparent;
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ImageColorHeight = 8;
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SmallImageColorHeight = 4;
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}
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#endregion
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#region Properties
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/// <summary>
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/// Gets or sets the height of the color preview on the <see cref="Image"/>
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/// </summary>
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[Description("Height of the color preview on the large image")]
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[Category("Appearance")]
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[DefaultValue(8)]
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public int ImageColorHeight { get; set; }
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/// <summary>
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/// Gets or sets the height of the color preview on the <see cref="RibbonButton.SmallImage"/>
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/// </summary>
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[Description("Height of the color preview on the small image")]
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[Category("Appearance")]
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[DefaultValue(4)]
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public int SmallImageColorHeight { get; set; }
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/// <summary>
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/// Gets or sets the currently chosen color
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/// </summary>
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[Category("Appearance")]
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public Color Color
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{
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get => _color;
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set { _color = value; RedrawItem(); OnColorChanged(EventArgs.Empty); }
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}
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#endregion
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#region Methods
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private Image CreateColorBmp(Color c)
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{
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Bitmap b = new Bitmap(16, 16);
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using (Graphics g = Graphics.FromImage(b))
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{
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using (SolidBrush br = new SolidBrush(c))
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{
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g.FillRectangle(br, new Rectangle(0, 0, 15, 15));
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}
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g.DrawRectangle(Pens.DimGray, new Rectangle(0, 0, 15, 15));
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}
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return b;
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}
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/// <summary>
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/// Raises the <see cref="ColorChanged"/>
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/// </summary>
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/// <param name="e"></param>
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protected void OnColorChanged(EventArgs e)
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{
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if (ColorChanged != null)
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{
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ColorChanged(this, e);
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}
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}
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#endregion
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#region Overrides
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public override void OnPaint(object sender, RibbonElementPaintEventArgs e)
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{
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base.OnPaint(sender, e);
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Color c = Color.Equals(Color.Transparent) ? Color.White : Color;
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int h = e.Mode == RibbonElementSizeMode.Large ? ImageColorHeight : SmallImageColorHeight;
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Rectangle colorFill = Rectangle.FromLTRB(
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ImageBounds.Left,
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ImageBounds.Bottom - h,
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ImageBounds.Right,
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ImageBounds.Bottom
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);
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SmoothingMode sm = e.Graphics.SmoothingMode;
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e.Graphics.SmoothingMode = SmoothingMode.None;
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using (SolidBrush b = new SolidBrush(c))
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{
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e.Graphics.FillRectangle(b, colorFill);
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}
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if (Color.Equals(Color.Transparent))
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{
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e.Graphics.DrawRectangle(Pens.DimGray, colorFill);
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}
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e.Graphics.SmoothingMode = sm;
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}
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#endregion
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}
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}
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