File: ButtonPainter.cs

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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2007 Novell, Inc.
//
// Authors:
//	Andreia Gaita (avidigal@novell.com)

using System;
using System.Drawing;

namespace System.Windows.Forms.Theming.Default
{
	/// <summary>
	/// Summary description for Button.
	/// </summary>
	internal class ButtonPainter
	{
		public ButtonPainter ()
		{

		}

		protected SystemResPool ResPool { get { return ThemeEngine.Current.ResPool; } }
		
		#region Buttons
		#region Standard Button
		public virtual void Draw (Graphics g, Rectangle bounds, ButtonThemeState state, Color backColor, Color foreColor) {
			bool is_themecolor = backColor.ToArgb () == ThemeEngine.Current.ColorControl.ToArgb () || backColor == Color.Empty ? true : false;
			CPColor cpcolor = is_themecolor ? CPColor.Empty : ResPool.GetCPColor (backColor);
			Pen pen;
			
			switch (state) {
				case ButtonThemeState.Normal:
				case ButtonThemeState.Entered:
				case ButtonThemeState.Disabled:
					pen = is_themecolor ? SystemPens.ControlLightLight : ResPool.GetPen (cpcolor.LightLight);
					g.DrawLine (pen, bounds.X, bounds.Y, bounds.X, bounds.Bottom - 2);
					g.DrawLine (pen, bounds.X + 1, bounds.Y, bounds.Right - 2, bounds.Y);

					pen = is_themecolor ? SystemPens.Control : ResPool.GetPen (backColor);
					g.DrawLine (pen, bounds.X + 1, bounds.Y + 1, bounds.X + 1, bounds.Bottom - 3);
					g.DrawLine (pen, bounds.X + 2, bounds.Y + 1, bounds.Right - 3, bounds.Y + 1);

					pen = is_themecolor ? SystemPens.ControlDark : ResPool.GetPen (cpcolor.Dark);
					g.DrawLine (pen, bounds.X + 1, bounds.Bottom - 2, bounds.Right - 2, bounds.Bottom - 2);
					g.DrawLine (pen, bounds.Right - 2, bounds.Y + 1, bounds.Right - 2, bounds.Bottom - 3);

					pen = is_themecolor ? SystemPens.ControlDarkDark : ResPool.GetPen (cpcolor.DarkDark);
					g.DrawLine (pen, bounds.X, bounds.Bottom - 1, bounds.Right - 1, bounds.Bottom - 1);
					g.DrawLine (pen, bounds.Right - 1, bounds.Y, bounds.Right - 1, bounds.Bottom - 2);
					break;
				case ButtonThemeState.Pressed:
					g.DrawRectangle (ResPool.GetPen (foreColor), bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1);

					bounds.Inflate (-1, -1);
					pen = is_themecolor ? SystemPens.ControlDark : ResPool.GetPen (cpcolor.Dark);
					g.DrawRectangle (pen, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1);
					break;
				case ButtonThemeState.Default:
					g.DrawRectangle (ResPool.GetPen (foreColor), bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1);

					bounds.Inflate (-1, -1);
					pen = is_themecolor ? SystemPens.ControlLightLight : ResPool.GetPen (cpcolor.LightLight);
					g.DrawLine (pen, bounds.X, bounds.Y, bounds.X, bounds.Bottom - 2);
					g.DrawLine (pen, bounds.X + 1, bounds.Y, bounds.Right - 2, bounds.Y);

					pen = is_themecolor ? SystemPens.Control : ResPool.GetPen (backColor);
					g.DrawLine (pen, bounds.X + 1, bounds.Y + 1, bounds.X + 1, bounds.Bottom - 3);
					g.DrawLine (pen, bounds.X + 2, bounds.Y + 1, bounds.Right - 3, bounds.Y + 1);

					pen = is_themecolor ? SystemPens.ControlDark : ResPool.GetPen (cpcolor.Dark);
					g.DrawLine (pen, bounds.X + 1, bounds.Bottom - 2, bounds.Right - 2, bounds.Bottom - 2);
					g.DrawLine (pen, bounds.Right - 2, bounds.Y + 1, bounds.Right - 2, bounds.Bottom - 3);

					pen = is_themecolor ? SystemPens.ControlDarkDark : ResPool.GetPen (cpcolor.DarkDark);
					g.DrawLine (pen, bounds.X, bounds.Bottom - 1, bounds.Right - 1, bounds.Bottom - 1);
					g.DrawLine (pen, bounds.Right - 1, bounds.Y, bounds.Right - 1, bounds.Bottom - 2);
					break;
			}
		}
		#endregion

		#region FlatStyle Button
		public virtual void DrawFlat (Graphics g, Rectangle bounds, ButtonThemeState state, Color backColor, Color foreColor, FlatButtonAppearance appearance) {
			bool is_themecolor = backColor.ToArgb () == ThemeEngine.Current.ColorControl.ToArgb () || backColor == Color.Empty ? true : false;
			CPColor cpcolor = is_themecolor ? CPColor.Empty : ResPool.GetCPColor (backColor);
			Pen pen;
			
			switch (state) {
				case ButtonThemeState.Normal:
				case ButtonThemeState.Disabled:
					// This will just use the BackColor
					break;
				case ButtonThemeState.Entered:
				case ButtonThemeState.Default | ButtonThemeState.Entered:
					if (appearance.MouseOverBackColor != Color.Empty)
						g.FillRectangle (ResPool.GetSolidBrush (appearance.MouseOverBackColor), bounds);
					else
						g.FillRectangle (ResPool.GetSolidBrush (ChangeIntensity (backColor, .9F)), bounds);
					break;
				case ButtonThemeState.Pressed:
					if (appearance.MouseDownBackColor != Color.Empty)
						g.FillRectangle (ResPool.GetSolidBrush (appearance.MouseDownBackColor), bounds);
					else
						g.FillRectangle (ResPool.GetSolidBrush (ChangeIntensity (backColor, .95F)), bounds);
					break;
				case ButtonThemeState.Default:
					if (appearance.CheckedBackColor != Color.Empty)
						g.FillRectangle (ResPool.GetSolidBrush (appearance.CheckedBackColor), bounds);
					break;
			}
			
			if (appearance.BorderColor == Color.Empty)
				pen = is_themecolor ? SystemPens.ControlDarkDark : ResPool.GetSizedPen (cpcolor.DarkDark, appearance.BorderSize);
			else
				pen = ResPool.GetSizedPen (appearance.BorderColor, appearance.BorderSize);
				
			bounds.Width -= 1;
			bounds.Height -= 1;
				
			if (appearance.BorderSize > 0)
				g.DrawRectangle (pen, bounds);
		}
		#endregion

		#region Popup Button
		public virtual void DrawPopup (Graphics g, Rectangle bounds, ButtonThemeState state, Color backColor, Color foreColor) {
			bool is_themecolor = backColor.ToArgb () == ThemeEngine.Current.ColorControl.ToArgb () || backColor == Color.Empty ? true : false;
			CPColor cpcolor = is_themecolor ? CPColor.Empty : ResPool.GetCPColor (backColor);
			Pen pen;

			switch (state) {
				case ButtonThemeState.Normal:
				case ButtonThemeState.Disabled:
				case ButtonThemeState.Pressed:
				case ButtonThemeState.Default:
					pen = is_themecolor ? SystemPens.ControlDarkDark : ResPool.GetPen (cpcolor.DarkDark);

					bounds.Width -= 1;
					bounds.Height -= 1;
					g.DrawRectangle (pen, bounds);

					if (state == ButtonThemeState.Default || state == ButtonThemeState.Pressed) {
						bounds.Inflate (-1, -1);
						g.DrawRectangle (pen, bounds);
					}
					break;
				case ButtonThemeState.Entered:
					pen = is_themecolor ? SystemPens.ControlLightLight : ResPool.GetPen (cpcolor.LightLight);
					g.DrawLine (pen, bounds.X, bounds.Y, bounds.X, bounds.Bottom - 2);
					g.DrawLine (pen, bounds.X + 1, bounds.Y, bounds.Right - 2, bounds.Y);

					pen = is_themecolor ? SystemPens.ControlDark : ResPool.GetPen (cpcolor.Dark);
					g.DrawLine (pen, bounds.X, bounds.Bottom - 1, bounds.Right - 1, bounds.Bottom - 1);
					g.DrawLine (pen, bounds.Right - 1, bounds.Y, bounds.Right - 1, bounds.Bottom - 2);
					break;
			}
		}
		#endregion
		#endregion
		
		private static Color ChangeIntensity (Color baseColor, float percent)
		{
			int H, I, S;

			ControlPaint.Color2HBS (baseColor, out H, out I, out S);
			int NewIntensity = Math.Min (255, (int)(I * percent));

			return ControlPaint.HBS2Color (H, NewIntensity, S);			
		}
	}
}