/////////////////////////////////////////////////////////////////////////////////////////////////////
// PUBLIC PROCEDURES
/////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Occurs when the element is rendered.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">A <see cref="CustomDrawElementCustomDrawEventArgs"/> that contains the event data.</param>
public void OnRenderCustomDrawElement(object sender, CustomDrawElementCustomDrawEventArgs e)
{
Code39ExtendedSymbology symbology = customDrawElement.Tag as Code39ExtendedSymbology;
if (symbology != null)
{
symbology.Render(e.DrawingContext, new Point(0, 0), customDrawElement.RenderSize);
}
}
/// <summary>
/// Occurs when an underline gallery item needs to be drawn.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">A <see cref="CustomDrawElementCustomDrawEventArgs"/> that contains the event data.</param>
private void OnCustomDrawUnderlineGalleryItems(object sender, CustomDrawElementCustomDrawEventArgs e)
{
// Draw the underline style onto the specified element
UnderlineStyleRenderer.Render(e, (UnderlineStyle)e.Element.DataContext);
}
/// <summary>
/// Draws an <see cref="UnderlineStyle"/> to an element.
/// </summary>
/// <param name="e">A <see cref="CustomDrawElementCustomDrawEventArgs"/> that contains the event data.</param>
/// <param name="underlineStyle">The <see cref="UnderlineStyle"/> to draw.</param>
public static void Render(CustomDrawElementCustomDrawEventArgs e, UnderlineStyle underlineStyle)
{
// Find the y-coordinate
double y = e.Element.RenderSize.Height / 2;
e.DrawingContext.PushGuidelineSet(new GuidelineSet(new double[] { 10.5, 139.5 }, new double[] { y - 0.5, y + 0.5 }));
// Draw the underline
switch (underlineStyle)
{
case UnderlineStyle.Underline:
e.DrawingContext.DrawLine(new Pen(Brushes.Black, 1), new Point(10, y), new Point(140, y));
break;
case UnderlineStyle.DoubleUnderline:
e.DrawingContext.DrawLine(new Pen(Brushes.Black, 1), new Point(10, y - 1), new Point(140, y - 1));
e.DrawingContext.DrawLine(new Pen(Brushes.Black, 1), new Point(10, y + 1), new Point(140, y + 1));
break;
case UnderlineStyle.ThickUnderline:
e.DrawingContext.DrawRectangle(Brushes.Black, null, new Rect(10, y, 130, 2));
break;
case UnderlineStyle.DottedUnderline: {
Pen pen = new Pen(Brushes.Black, 1);
pen.DashStyle = DashStyles.Dot;
e.DrawingContext.DrawLine(pen, new Point(10, y), new Point(140, y));
break;
}
case UnderlineStyle.DashedUnderline: {
Pen pen = new Pen(Brushes.Black, 1);
pen.DashStyle = DashStyles.Dash;
e.DrawingContext.DrawLine(pen, new Point(10, y), new Point(140, y));
break;
}
case UnderlineStyle.DotDashUnderline: {
Pen pen = new Pen(Brushes.Black, 1);
pen.DashStyle = DashStyles.DashDot;
e.DrawingContext.DrawLine(pen, new Point(10, y), new Point(140, y));
break;
}
case UnderlineStyle.DotDotDashUnderline: {
Pen pen = new Pen(Brushes.Black, 1);
pen.DashStyle = DashStyles.DashDotDot;
e.DrawingContext.DrawLine(pen, new Point(10, y), new Point(140, y));
break;
}
case UnderlineStyle.WaveUnderline: {
Pen pen = new Pen(Brushes.Black, 0.5);
double x = 10;
for (; x < 140; x += 2)
{
if (x % 4 == 0)
{
// Draw up diagonal
e.DrawingContext.DrawLine(pen, new Point(x, y + 1), new Point(x + 1, y));
}
else
{
// Draw down diagonal
e.DrawingContext.DrawLine(pen, new Point(x, y - 1), new Point(x + 1, y));
}
}
break;
}
}
e.DrawingContext.Pop();
}