// Draws the button on the specified Grapics
// in the specified state.
//
// Parameters:
// gr - The Graphics object on which to draw the button.
// pressed - If true, the button is drawn in the depressed state.
private void DrawButton(Graphics gr, bool pressed)
{
// Get a Graphics object from the background image.
Graphics gr2 = Graphics.FromImage(DoubleBufferImage);
// Fill solid up until where the gradient fill starts.
if (_StartOffset > 0)
{
if (_FillDirection == GradientFill.FillDirection.LeftToRight)
{
gr2.FillRectangle(
new SolidBrush((pressed ^ _ReverseGradient) ? EndColor : StartColor),
0, 0, _StartOffset, Height);
}
else
{
gr2.FillRectangle(new SolidBrush((pressed ^ _ReverseGradient) ? EndColor : StartColor),
0, 0, Width, _StartOffset);
}
}
// Draw the gradient fill.
Rectangle rc = this.ClientRectangle;
if (_FillDirection == GradientFill.FillDirection.LeftToRight)
{
rc.X = _StartOffset;
rc.Width = rc.Width - _StartOffset - _EndOffset;
}
else
{
rc.Y = _StartOffset;
rc.Height = rc.Height - _StartOffset - _EndOffset;
}
GradientFill.Fill(
gr2,
rc,
(pressed ^ _ReverseGradient) ? _EndColor : _StartColor,
(pressed ^ _ReverseGradient) ? _StartColor : _EndColor,
_FillDirection);
// Fill solid from the end of the gradient fill
// to the edge of the button.
if (_EndOffset > 0)
{
if (_FillDirection == GradientFill.FillDirection.LeftToRight)
{
gr2.FillRectangle(new SolidBrush((pressed ^ _ReverseGradient) ? StartColor : EndColor),
rc.X + rc.Width, 0, _EndOffset, Height);
}
else
{
gr2.FillRectangle(new SolidBrush((pressed ^ _ReverseGradient) ? StartColor : EndColor),
0, rc.Y + rc.Height, Width, _EndOffset);
}
}
// Draw the text.
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
gr2.DrawString(this.Text, this.Font,
new SolidBrush(this.ForeColor),
this.ClientRectangle, sf);
// Draw the border.
// Need to shrink the width and height by 1 otherwise
// there will be no border on the right or bottom.
rc = this.ClientRectangle;
rc.Width--;
rc.Height--;
Pen pen = new Pen(SystemColors.WindowFrame);
gr2.DrawRectangle(pen, rc);
// Draw from the background image onto the screen.
gr.DrawImage(DoubleBufferImage, 0, 0);
gr2.Dispose();
}
// Draws the button on the specified Grapics
// in the specified state.
//
// Parameters:
// gr - The Graphics object on which to draw the button.
// pressed - If true, the button is drawn in the depressed state.
private void DrawPanel(Graphics gr)
{
// Get a Graphics object from the background image.
Graphics gr2 = Graphics.FromImage(DoubleBufferImage);
// Fill solid up until where the gradient fill starts.
if (startOffset > 0)
{
if (fillDirection == GradientFill.FillDirection.LeftToRight)
{
gr2.FillRectangle(
new SolidBrush((reverseGradient) ? EndColor : StartColor),
0, 0, startOffset, Height);
}
else
{
gr2.FillRectangle(new SolidBrush((reverseGradient) ? EndColor : StartColor),
0, 0, Width, startOffset);
}
}
// Draw the gradient fill.
Rectangle rc = this.ClientRectangle;
if (fillDirection == GradientFill.FillDirection.LeftToRight)
{
rc.X = startOffset;
rc.Width = rc.Width - startOffset - endOffset;
}
else
{
rc.Y = startOffset;
rc.Height = rc.Height - startOffset - endOffset;
}
GradientFill.Fill(
gr2,
rc,
(reverseGradient) ? endColor : startColor,
(reverseGradient) ? startColor : endColor,
fillDirection);
// Fill solid from the end of the gradient fill
// to the edge of the button.
if (endOffset > 0)
{
if (fillDirection == GradientFill.FillDirection.LeftToRight)
{
gr2.FillRectangle(new SolidBrush((reverseGradient) ? StartColor : EndColor),
rc.X + rc.Width, 0, endOffset, Height);
}
else
{
gr2.FillRectangle(new SolidBrush((reverseGradient) ? StartColor : EndColor),
0, rc.Y + rc.Height, Width, endOffset);
}
}
if (border > 0)
{
// Draw the border.
// Need to shrink the width and height by 1 otherwise
// there will be no border on the right or bottom.
rc = this.ClientRectangle;
rc.Width = rc.Width - border;
rc.Height = rc.Height - border;
Pen pen = new Pen(SystemColors.WindowFrame);
gr2.DrawRectangle(pen, rc);
}
// Draw from the background image onto the screen.
gr.DrawImage(DoubleBufferImage, 0, 0);
gr2.Dispose();
}
