protected void FillImagePrintInfo(PrintPlaceholder placeholder, object source)
{
if (source == null)
{
return;
}
if (_receivesOnlyBitmaps)
{
placeholder.Image = (Bitmap)source;
placeholder.Location = Point.Empty;
placeholder.Size = Size.Empty;
placeholder.Header = null;
placeholder.Footer = null;
}
else
{
PrintPlaceholder receivedPlaceholder = (PrintPlaceholder)source;
placeholder.Image = receivedPlaceholder.Image;
placeholder.Location = receivedPlaceholder.Location;
placeholder.Size = receivedPlaceholder.Size;
placeholder.Header = receivedPlaceholder.Header;
placeholder.Footer = receivedPlaceholder.Footer;
}
}
public FromIEnumeratorProvider(IEnumerator enumerator)
{
if (enumerator == null)
{
throw new ArgumentNullException("pEnumerator");
}
_enumerator = enumerator;
_isEmpty = !enumerator.MoveNext();
if (!_isEmpty)
{
object obj = enumerator.Current;
if (obj == null)
{
_isEmpty = true;
return;
}
Type type = obj.GetType();
if (type == typeof(Bitmap))
{
_receivesOnlyBitmaps = true;
}
else if (type != typeof(PrintPlaceholder))
{
throw new ArgumentException(StringResources.GetString("UnexpectedParameterType"), "pEnumerator");
}
_next = new PrintPlaceholder();
FillImagePrintInfo(_next, obj);
}
}
public virtual PrintPlaceholder GetNext()
{
_isEmpty = !_enumerator.MoveNext();
PrintPlaceholder result = _next;
_next = null;
if (!_isEmpty)
{
Object source = _enumerator.Current;
if (source != null)
{
_next = new PrintPlaceholder();
FillImagePrintInfo(_next, source);
}
else
{
_isEmpty = true;
}
}
return(result);
}
protected virtual ImagePrintItem GetNextItem(PrintPageEventArgs e)
{
if (!_eventHasMoreImages)
{
return(null);
}
// Getting next image & info from IImageProvider
PrintPlaceholder imagePlaceholder;
if (_imageProvider != null && !_imageProvider.IsEmpty())
{
imagePlaceholder = _imageProvider.GetNext();
}
else
{
imagePlaceholder = new PrintPlaceholder();
}
// Firing PrintImage event in ImagePrintDocument
QueryImageEventArgs queryImageEventArgs = new QueryImageEventArgs();
queryImageEventArgs.PrintPlaceholder = imagePlaceholder;
queryImageEventArgs.PrintOptions = _printOptions;
OnQueryImageEvent(queryImageEventArgs);
if (queryImageEventArgs.Cancel == true || queryImageEventArgs.PrintPlaceholder.Image == null)
{
e.Cancel = true;
return(null);
}
int printerResolutionX, printerResolutionY;
GetValidatedResolution(e, out printerResolutionX, out printerResolutionY);
// If we didn't got image from IImageProvider or from user's handler
// of PrintImage event - just return null.
if (imagePlaceholder.Image == null)
{
return(null);
}
// Filling result ImagePrintItem
ImagePrintItem item = new ImagePrintItem(printerResolutionX, printerResolutionY);
item.Image = imagePlaceholder.Image;
item.ImageFitMode = _printOptions.ImageFitMode;
item.ImageAutoRotate = _printOptions.ImageAutoRotate;
item.InterpolationMode = _printOptions.InterpolationMode;
item.HeaderFont = _printOptions.HeaderFont;
item.FooterFont = _printOptions.FooterFont;
item.HeaderColor = _printOptions.HeaderColor;
item.FooterColor = _printOptions.FooterColor;
item.HeaderTrimmming = _printOptions.HeaderTrimming;
item.FooterTrimmming = _printOptions.FooterTrimming;
item.HeaderAlignment = _printOptions.HeaderAlignment;
item.FooterAlignment = _printOptions.FooterAlignment;
// Header & footer
if (_printOptions.HeaderEnabled)
{
item.HeaderText = imagePlaceholder.Header;
}
if (_printOptions.FooterEnabled)
{
item.FooterText = imagePlaceholder.Footer;
}
if (_printOptions.BorderEnabled)
{
int pixelWidth = PrintUtils.InchHundredthsToPixels(_printOptions.BorderWidth, printerResolutionX);
item.BorderPen = new System.Drawing.Pen(_printOptions.BorderColor, pixelWidth);
}
// Setting external size. Size can be redefined in QueryImageEventHandler
if (imagePlaceholder.Size.Width != 0 && imagePlaceholder.Size.Height != 0)
{
Size resizeSize = new Size();
resizeSize.Width = PrintUtils.InchHundredthsToPixels(imagePlaceholder.Size.Width, printerResolutionX);
resizeSize.Height = PrintUtils.InchHundredthsToPixels(imagePlaceholder.Size.Height, printerResolutionY);
item.SetSize(resizeSize);
}
else if (_printOptions.PlaceholderSize.Width != 0 && _printOptions.PlaceholderSize.Height != 0)
{
Size resizeSize = new Size();
resizeSize.Width = PrintUtils.InchHundredthsToPixels(_printOptions.PlaceholderSize.Width, printerResolutionX);
resizeSize.Height = PrintUtils.InchHundredthsToPixels(_printOptions.PlaceholderSize.Height, printerResolutionY);
item.SetSize(resizeSize);
}
return(item);
}
