Hi all,
I have made (just to learn C#) a calculator program, which is working OK. I made a Round button class for it, but the edges of the buttons still look "crispy". I set SmoothingMode and PixelOffsetMode to HighQuality but it seems to have no effect. Is this once again a problem of Vista? MonthCalendar has a problem whit it, as Ramy once pointed out to me.
Or is it something else here?
Any advice is more than welcome.
This is the code of my Roundbutton class:
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
namespace CalculatorApp
{
// Class for "3D" oval or circle button
// just using a color trick to simulate a 3D effect
//
class RoundButton : Button
{
private Color _startcolor = Color.White;
private Color _endcolor = Color.Black;
private Color _textcolor = Color.Black;
private bool _swap = false;
//default constructor
public RoundButton(){}
public RoundButton(Color startcolor, Color endcolor)
{
_startcolor = startcolor;
_endcolor = endcolor;
}
public Color Startcolor
{
get { return _startcolor;}
set { _startcolor = value;}
}
public Color Endcolor
{
get { return _endcolor; }
set { _endcolor = value; }
}
public Color Textcolor
{
get { return _textcolor; }
set { _textcolor = value; }
}
private void DoDraw(Graphics G, bool sw) //sw does the color swap, quicker than a swap routine!
{
Brush textBr = new SolidBrush(_textcolor);
Rectangle R = new Rectangle(0, 0, this.Width, this.Height);
StringFormat strFormat = new StringFormat();
strFormat.Alignment = StringAlignment.Center;
strFormat.LineAlignment = StringAlignment.Center;
G.SmoothingMode = SmoothingMode.HighQuality; // change??????
G.PixelOffsetMode = PixelOffsetMode.HighQuality;// change??????
GraphicsPath path = new GraphicsPath();
path.AddEllipse(R);
this.Region = new Region(path);
R.Inflate(1, 1);
LinearGradientBrush linBr;
if (sw)
linBr = new LinearGradientBrush
(new Point(R.Left, R.Top), new Point(R.Right, R.Bottom), _endcolor, _startcolor);
else
linBr = new LinearGradientBrush
(new Point(R.Left, R.Top), new Point(R.Right, R.Bottom), _startcolor, _endcolor);
G.FillEllipse(linBr, R);
R.Inflate(-5, -5);
LinearGradientBrush linBrBack;
if (sw)
linBrBack = new LinearGradientBrush
(new Point(R.Left, R.Top), new Point(R.Right, R.Bottom), _startcolor, _endcolor);
else
linBrBack = new LinearGradientBrush
(new Point(R.Left, R.Top), new Point(R.Right, R.Bottom), _endcolor, _startcolor);
G.FillEllipse(linBrBack, R);
G.DrawString(this.Text, this.Font, textBr, R, strFormat);
}
protected override void OnPaint(PaintEventArgs pevent)
{
base.OnPaint(pevent);
DoDraw(pevent.Graphics, _swap);
}
protected override void OnMouseHover(EventArgs e) // not needed really, but nice to have
{
Graphics g = this.CreateGraphics();
_swap = true;
DoDraw(g, _swap);
_swap = false;
g.Dispose();
base.OnMouseHover(e);
}
}
}And this is how I use it in my main form:
private const int cTotalOperBtns = 5;
private string[] OperBtnStr = new string[cTotalOperBtns] { "/", "*", "-", "+", "=" };
private void MakeOperatorBtns()
{
for (int i = 0; i < cTotalOperBtns; i++)
{
_OperatorBtn[i] = new RoundButton(Color.Blue, Color.White);
_OperatorBtn[i].Name = OperBtnStr[i];
_OperatorBtn[i].Text = OperBtnStr[i];
_OperatorBtn[i].Size = new Size(60, 30); //make oval button
_OperatorBtn[i].Font = new Font("Microsoft Sans Serif", 12F,
System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.OperatorBtnLayoutPanel.Controls.Add(_OperatorBtn[i]);
_OperatorBtn[i].Click += new EventHandler(OperatorBtn_Click);
_OperatorBtn[i].Textcolor = Color.White; //set text to white
}
} //END MakeOperatorBtns
