/// <summary>
/// Raises the <see cref="E:System.Drawing.Printing.PrintDocument.PrintPage" /> event. It is called before a page
/// prints.
/// </summary>
/// <param name="e">A <see cref="T:System.Drawing.Printing.PrintPageEventArgs" /> that contains the event data. </param>
protected override void OnPrintPage(PrintPageEventArgs e)
{
base.OnPrintPage(e);
if (_resourceManager == null)
{
return;
}
e.Graphics.SetClip(e.MarginBounds);
using (GDIGraphics graphics = new GDIGraphics(
e.Graphics,
_resourceManager,
SolidColourStyle.White,
_lineStyle))
{
Matrix3x2 transform, inverseTransform;
_getTranform(
e.MarginBounds.ToRectangle(),
out transform,
out inverseTransform);
graphics.Transform = transform;
Vector2 tl = new Vector2(e.MarginBounds.Left, e.MarginBounds.Top);
Vector2 br = new Vector2(e.MarginBounds.Right, e.MarginBounds.Bottom);
tl = Vector2.Transform(tl, inverseTransform);
br = Vector2.Transform(br, inverseTransform);
Rectangle bounds = Rectangle.ContainingPoints(tl, br);
switch (PrintMode)
{
case TilingPrintMode.TilingFull:
if (Tiling == null)
{
throw new InvalidOperationException("The Tiling is not set");
}
Tiling.DrawTiling(GetTiles(bounds), graphics, Tiling.StyleManager.LineStyle);
break;
case TilingPrintMode.TilingLines:
if (Tiling == null)
{
throw new InvalidOperationException("The Tiling is not set");
}
Tiling.DrawTiling(GetTiles(bounds), graphics, _lineStyle, SolidColourStyle.White);
break;
case TilingPrintMode.SingleTileFull:
if (Tile == null)
{
throw new InvalidOperationException("The Tile is not set");
}
DrawTile(graphics, Tiling?.StyleManager.LineStyle ?? _lineStyle);
break;
case TilingPrintMode.SingleTileLines:
if (Tile == null)
{
throw new InvalidOperationException("The Tile is not set");
}
DrawTile(graphics, _lineStyle, SolidColourStyle.White);
break;
default:
Debug.Fail($"Unexpected print mode {PrintMode}");
throw new NotSupportedException();
}
}
}