using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
namespace Mesoft.Control
{ public class MeGlassButton : Button
{ #region properties
private Bitmap _bmpBackBuffer;
private State _status;
[Category("Mesoft")] private State ButtonStatus
{ get { return _status; } set
{ _status = value;
_bmpBackBuffer = null;
this.Refresh();
}
}
private enum State
{ Normal,
Hover,
Click
}
[Category("Mesoft")] private enum RectangleCorners
{ None = 0, TopLeft = 1, TopRight = 2,
BottomLeft = 4, BottomRight = 8,
All = TopLeft | TopRight | BottomLeft | BottomRight
}
private int _radius = 6;
[Category("Mesoft")] public int RoundedCornerRadius
{ get { return _radius; } set { _radius = value; ButtonStatus = _status; } }
private bool _antialias = true;
[Category("Mesoft")] public bool FontAntiAlias
{ get { return _antialias; } set { _antialias = value; ButtonStatus = _status; } }
[Category("Mesoft")] public override ContentAlignment TextAlign
{ get
{ return base.TextAlign;
}
set
{ base.TextAlign = value;
ButtonStatus = _status;
}
}
[Category("Mesoft")] public override Color BackColor
{ get
{ return base.BackColor;
}
set
{ base.BackColor = value;
ButtonStatus = _status;
}
}
[Category("Mesoft")] public override string Text
{ get
{ return base.Text;
}
set
{ base.Text = value;
ButtonStatus = _status;
}
}
[Category("Mesoft")] public override Font Font
{ get
{ return base.Font;
}
set
{ base.Font = value;
ButtonStatus = _status;
}
}
[Category("Mesoft")] public override Color ForeColor
{ get
{ return base.ForeColor;
}
set
{ base.ForeColor = value;
ButtonStatus = _status;
}
}
#endregion
public MeGlassButton()
{ InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.SetStyle(ControlStyles.Selectable, true);
this.SetStyle(ControlStyles.UserPaint, true);
}
private void InitializeComponent()
{ this.Size = new System.Drawing.Size(100, 32);
this.Font = new Font("Calibri", 12, FontStyle.Bold); this.ForeColor = Color.White;
this.MouseEnter += new System.EventHandler(this.GlassButton_MouseEnter);
this.MouseLeave += new System.EventHandler(this.GlassButton_MouseLeave);
this.MouseDown += new MouseEventHandler(GlassButton_MouseDown);
this.MouseUp += new MouseEventHandler(GlassButton_MouseUp);
this.Resize += new EventHandler(GlassButton_Resize);
}
void GlassButton_Resize(object sender, EventArgs e)
{ ButtonStatus = State.Normal;
}
private void GlassButton_MouseUp(object sender, MouseEventArgs e)
{ ButtonStatus = State.Hover;
}
private void GlassButton_MouseDown(object sender, MouseEventArgs e)
{ ButtonStatus = State.Click
}
private void GlassButton_MouseLeave(object sender, EventArgs e)
{ ButtonStatus = State.Normal;
}
private void GlassButton_MouseEnter(object sender, EventArgs e)
{ ButtonStatus = State.Hover;
}
protected override void OnPaint(PaintEventArgs e)
{ base.OnPaint(e);
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
if (_bmpBackBuffer == null)
{ DrawButton(ref _bmpBackBuffer);
}
if (_bmpBackBuffer != null)
{ e.Graphics.DrawImage(_bmpBackBuffer, e.ClipRectangle, e.ClipRectangle, GraphicsUnit.Pixel);
}
}
private void DrawButton(ref Bitmap bmp)
{ if (bmp == null)
{ bmp = new Bitmap(this.ClientSize.Width, this.ClientSize.Height);
}
using (Graphics gr = Graphics.FromImage(bmp))
{ DrawGlass(gr, new Rectangle(0, 0, this.Width, this.Height));
}
}
private void DrawGlass(Graphics gr, Rectangle rectBar)
{ // Some calculations
if (rectBar.Height <= 0) rectBar.Height = 1;
int nAlphaStart = (int)(185 + 5 * rectBar.Width / 24),
nAlphaEnd = (int)(10 + 4 * rectBar.Width / 24);
if (nAlphaStart > 255) nAlphaStart = 255;
else if (nAlphaStart < 0) nAlphaStart = 0;
if (nAlphaEnd > 255) nAlphaEnd = 255;
else if (nAlphaEnd < 0) nAlphaEnd = 0;
Color ColorBacklight;
Color ColorFillBK;
Color ColorBorder;
switch (_status)
{ case State.Click:
ColorBacklight = GetDarkerColor(this.BackColor, 20);
ColorFillBK = GetDarkerColor(this.BackColor, 40);
ColorBorder = GetDarkerColor(this.BackColor, 60);
break;
case State.Hover:
ColorBacklight = GetLighterColor(this.BackColor, 5);
ColorFillBK = GetLighterColor(this.BackColor, 10);
ColorBorder = GetDarkerColor(this.BackColor, 100);
break;
case State.Normal:
default:
ColorBacklight = this.BackColor;
ColorFillBK = GetDarkerColor(this.BackColor, 85);
ColorBorder = GetDarkerColor(this.BackColor, 100);
break;
}
Color ColorBacklightEnd = Color.FromArgb(50, 0, 0, 0);
Color ColorGlowStart = Color.FromArgb(nAlphaEnd, 255, 255, 255);
Color ColorGlowEnd = Color.FromArgb(nAlphaStart, 255, 255, 255);
// Create gradient path
RectangleF er = new RectangleF(rectBar.Left - (rectBar.Width), rectBar.Top - (rectBar.Height / 2), rectBar.Width * 3, rectBar.Height * 4);
GraphicsPath rctPath = new GraphicsPath();
rctPath.AddEllipse(er);
// Create gradient
PathGradientBrush pgr = new PathGradientBrush(rctPath);
pgr.CenterPoint = new PointF(rectBar.Width / 2, rectBar.Height);
pgr.CenterColor = ColorBacklight;
pgr.SurroundColors = new Color[] { ColorBacklightEnd }; // Create glow
GraphicsPath rectBarPath = CreateRoundedPath(rectBar.X, rectBar.Y, rectBar.Width - 1, rectBar.Height - 1, _radius, RectangleCorners.All);
GraphicsPath rectBarPathHalf = CreateRoundedPath(rectBar.X, rectBar.Y, rectBar.Width - 1, (rectBar.Height - 1) / 2, _radius, RectangleCorners.TopRight | RectangleCorners.TopLeft);
Rectangle rectGlow = new Rectangle(rectBar.Left, rectBar.Top, rectBar.Width, rectBar.Height / 2);
LinearGradientBrush brGlow = new LinearGradientBrush(
new PointF(rectGlow.Left, rectGlow.Height + 1), new PointF(rectGlow.Left, rectGlow.Top - 1),
ColorGlowStart, ColorGlowEnd);
// Draw the button
gr.FillRectangle(new SolidBrush(this.Parent.BackColor), rectBar);
gr.FillPath(new SolidBrush(ColorFillBK), rectBarPath);
gr.FillPath(pgr, rectBarPath);
gr.FillPath(brGlow, rectBarPathHalf);
gr.DrawPath(new Pen(ColorBorder, 1), rectBarPath);
StringFormat stringFormat = new StringFormat();
switch (this.TextAlign)
{ case ContentAlignment.TopLeft:
stringFormat.Alignment = StringAlignment.Near;
stringFormat.LineAlignment = StringAlignment.Near;
break;
case ContentAlignment.TopCenter:
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Near;
break;
case ContentAlignment.TopRight:
stringFormat.Alignment = StringAlignment.Far;
stringFormat.LineAlignment = StringAlignment.Near;
break;
case ContentAlignment.MiddleLeft:
stringFormat.Alignment = StringAlignment.Near;
stringFormat.LineAlignment = StringAlignment.Center;
break;
case ContentAlignment.MiddleCenter:
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;
break;
case ContentAlignment.MiddleRight:
stringFormat.Alignment = StringAlignment.Far;
stringFormat.LineAlignment = StringAlignment.Center;
break;
case ContentAlignment.BottomLeft:
stringFormat.Alignment = StringAlignment.Near;
stringFormat.LineAlignment = StringAlignment.Far;
break;
case ContentAlignment.BottomCenter:
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Far;
break;
case ContentAlignment.BottomRight:
stringFormat.Alignment = StringAlignment.Far;
stringFormat.LineAlignment = StringAlignment.Far;
break;
}
SolidBrush drawBrush = new SolidBrush(this.ForeColor);
if (_antialias)
gr.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
gr.DrawString(this.Text, this.Font, drawBrush, rectBar, stringFormat);
}
private Color GetDarkerColor(Color color, byte intensity)
{ int r, g, b;
r = color.R - intensity;
g = color.G - intensity;
b = color.B - intensity;
if (r > 255 || r < 0) r *= -1;
if (g > 255 || g < 0) g *= -1;
if (b > 255 || b < 0) b *= -1;
return Color.FromArgb(255, (byte)r, (byte)g, (byte)b);
}
private Color GetLighterColor(Color color, byte intensity)
{ int r, g, b;
r = color.R + intensity;
g = color.G + intensity;
b = color.B + intensity;
if (r > 255 || r < 0) r *= -1;
if (g > 255 || g < 0) g *= -1;
if (b > 255 || b < 0) b *= -1;
return Color.FromArgb(255, (byte)r, (byte)g, (byte)b);
}
private GraphicsPath CreateRoundedPath(int x, int y, int width, int height, int radius, RectangleCorners corners)
{ int xw = x + width - 1;
int yh = y + height - 1;
int xwr = xw - radius;
int yhr = yh - radius;
int xr = x + radius;
int yr = y + radius;
int r2 = radius * 2;
int xwr2 = xw - r2;
int yhr2 = yh - r2;
GraphicsPath p = new GraphicsPath();
p.StartFigure();
//Top Left Corner
if ((RectangleCorners.TopLeft & corners) == RectangleCorners.TopLeft)
{ p.AddArc(x, y, r2, r2, 180, 90);
}
else
{ p.AddLine(x, yr, x, y);
p.AddLine(x, y, xr, y);
}
//Top Edge
p.AddLine(xr, y, xwr, y);
//Top Right Corner
if ((RectangleCorners.TopRight & corners) == RectangleCorners.TopRight)
{ p.AddArc(xwr2, y, r2, r2, 270, 90);
}
else
{ p.AddLine(xwr, y, xw, y);
p.AddLine(xw, y, xw, yr);
}
//Right Edge
p.AddLine(xw, yr, xw, yhr);
//Bottom Right Corner
if ((RectangleCorners.BottomRight & corners) == RectangleCorners.BottomRight)
{ p.AddArc(xwr2, yhr2, r2, r2, 0, 90);
}
else
{ p.AddLine(xw, yhr, xw, yh);
p.AddLine(xw, yh, xwr, yh);
}
//Bottom Edge
p.AddLine(xwr, yh, xr, yh);
//Bottom Left Corner
if ((RectangleCorners.BottomLeft & corners) == RectangleCorners.BottomLeft)
{ p.AddArc(x, yhr2, r2, r2, 90, 90);
}
else
{ p.AddLine(xr, yh, x, yh);
p.AddLine(x, yh, x, yhr);
}
//Left Edge
p.AddLine(x, yhr, x, yr);
p.CloseFigure();
return p;
}
}
}
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