/// <summary>
/// Renders the element to the provided page (container).
/// </summary>
/// <param name="container">The container.</param>
/// <param name="visual">The visual.</param>
/// <param name="alignment">The alignment.</param>
private void RenderElement(ContainerVisual container, FrameworkElement visual, PrintElementType alignment)
{
if (visual == null) return;
var drawingVisual = new DrawingVisual();
using (var dc = drawingVisual.RenderOpen())
{
var visualX = 0d;
var visualY = 0d;
var visualHeight = visual.DesiredSize.Height;
var visualWidth = visual.DesiredSize.Width;
switch (alignment)
{
case PrintElementType.Header:
visualY = OriginalPrintMargin.Top;
visualX = OriginalPrintMargin.Left;
break;
case PrintElementType.Footer:
visualY = TotalPrintableArea.Height - OriginalPrintMargin.Bottom - visual.DesiredSize.Height;
visualX = OriginalPrintMargin.Left;
break;
case PrintElementType.Watermark:
var totalWidth = TotalPrintableArea.Width - OriginalPrintMargin.Left - OriginalPrintMargin.Right;
var totalHeight = TotalPrintableArea.Height - OriginalPrintMargin.Top - OriginalPrintMargin.Bottom;
visualX = ((totalWidth - visualWidth)/2) + OriginalPrintMargin.Left;
visualY = ((totalHeight - visualHeight)/2) + OriginalPrintMargin.Right;
break;
}
if (visual.Margin.Top > 0.0001 || visual.Margin.Left > 0.0001 || visual.Margin.Right > 0.0001 || visual.Margin.Bottom > 0.0001)
{
visualX += visual.Margin.Left;
visualY += visual.Margin.Top;
visualHeight -= (visual.Margin.Top + visual.Margin.Bottom);
visualWidth -= (visual.Margin.Left + visual.Margin.Right);
}
// We need to clone the visual, so we can change the same visual individually on each page if need be
var xaml = XamlWriter.Save(visual);
var stringReader = new StringReader(xaml);
var xmlReader = XmlReader.Create(stringReader);
var newVisual = (FrameworkElement) XamlReader.Load(xmlReader);
newVisual.DataContext = visual.DataContext;
newVisual.Resources = visual.Resources;
CheckVisualForSpecialRuns(newVisual);
var brush = new VisualBrush(newVisual) {Stretch = Stretch.None};
var renderRect = new Rect(visualX, visualY, visualWidth, visualHeight);
if (DocumentPrintMargin.Top > 0 || DocumentPrintMargin.Left > 0)
dc.PushTransform(new TranslateTransform(DocumentPrintMargin.Left * -1, DocumentPrintMargin.Top * -1));
dc.DrawRectangle(brush, new Pen(Brushes.Transparent, 0d), renderRect);
if (DocumentPrintMargin.Top > 0 || DocumentPrintMargin.Left > 0)
dc.Pop();
}
container.Children.Add(drawingVisual);
}
/// <summary>
/// Renders the element to the provided page (container).
/// </summary>
/// <param name="container">The container.</param>
/// <param name="visual">The visual.</param>
/// <param name="alignment">The alignment.</param>
private void RenderElement(ContainerVisual container, FrameworkElement visual, PrintElementType alignment)
{
if (visual == null)
{
return;
}
var drawingVisual = new DrawingVisual();
using (var dc = drawingVisual.RenderOpen())
{
var visualX = 0d;
var visualY = 0d;
var visualHeight = visual.DesiredSize.Height;
var visualWidth = visual.DesiredSize.Width;
switch (alignment)
{
case PrintElementType.Header:
visualY = OriginalPrintMargin.Top;
visualX = OriginalPrintMargin.Left;
break;
case PrintElementType.Footer:
visualY = TotalPrintableArea.Height - OriginalPrintMargin.Bottom - visual.DesiredSize.Height;
visualX = OriginalPrintMargin.Left;
break;
case PrintElementType.Watermark:
var totalWidth = TotalPrintableArea.Width - OriginalPrintMargin.Left - OriginalPrintMargin.Right;
var totalHeight = TotalPrintableArea.Height - OriginalPrintMargin.Top - OriginalPrintMargin.Bottom;
visualX = ((totalWidth - visualWidth) / 2) + OriginalPrintMargin.Left;
visualY = ((totalHeight - visualHeight) / 2) + OriginalPrintMargin.Right;
break;
}
if (visual.Margin.Top > 0.0001 || visual.Margin.Left > 0.0001 || visual.Margin.Right > 0.0001 || visual.Margin.Bottom > 0.0001)
{
visualX += visual.Margin.Left;
visualY += visual.Margin.Top;
visualHeight -= (visual.Margin.Top + visual.Margin.Bottom);
visualWidth -= (visual.Margin.Left + visual.Margin.Right);
}
// We need to clone the visual, so we can change the same visual individually on each page if need be
var xaml = XamlWriter.Save(visual);
var stringReader = new StringReader(xaml);
var xmlReader = XmlReader.Create(stringReader);
var newVisual = (FrameworkElement)XamlReader.Load(xmlReader);
newVisual.DataContext = visual.DataContext;
newVisual.Resources = visual.Resources;
CheckVisualForSpecialRuns(newVisual);
var brush = new VisualBrush(newVisual)
{
Stretch = Stretch.None
};
var renderRect = new Rect(visualX, visualY, visualWidth, visualHeight);
if (DocumentPrintMargin.Top > 0 || DocumentPrintMargin.Left > 0)
{
dc.PushTransform(new TranslateTransform(DocumentPrintMargin.Left * -1, DocumentPrintMargin.Top * -1));
}
dc.DrawRectangle(brush, new Pen(Brushes.Transparent, 0d), renderRect);
if (DocumentPrintMargin.Top > 0 || DocumentPrintMargin.Left > 0)
{
dc.Pop();
}
}
container.Children.Add(drawingVisual);
}
