public override void FillPage(PrintPageEventArgs e, System.Collections.ArrayList items, System.Collections.ArrayList coords)
{
System.Diagnostics.Debug.Assert(items != null, "pItems should be allocated by caller");
System.Diagnostics.Debug.Assert(coords != null, "pCoords should be allocated by caller");
int printerResolutionX, printerResolutionY;
GetValidatedResolution(e, out printerResolutionX, out printerResolutionY);
ConvertSpacings(printerResolutionX, printerResolutionY);
int curX = 0,
curY = 0,
leftMargin = PrintUtils.InchHundredthsToPixels(e.MarginBounds.X, printerResolutionX),
topMargin = PrintUtils.InchHundredthsToPixels(e.MarginBounds.Y, printerResolutionY),
maxHeight = -1,
pageWidth = PrintUtils.InchHundredthsToPixels(e.MarginBounds.Width, printerResolutionX),
pageHeight = PrintUtils.InchHundredthsToPixels(e.MarginBounds.Height, printerResolutionY);
Size pageSize = new Size(pageWidth, pageHeight);
bool isPageFilled = false;
while (!isPageFilled)
{
bool isRowFilled = false;
maxHeight = -1;
while (!isRowFilled)
{
ImagePrintItem item = GetNextItem(e);
if (e.Cancel == true)
{
return;
}
if (item == null)
{
isPageFilled = true;
break;
}
item.FitSize(pageSize, _printOptions.PlaceholderAutoRotate);
Size itemSize = item.GetSize();
Size rotatedSize = item.GetSizeOfRotated();
// Trying to insert (maybe with rotation, if it allowed)
int freeSpaceWidth = pageWidth - curX,
freeSpaceHeight = pageHeight - curY;
if (itemSize.Width <= freeSpaceWidth && itemSize.Height <= freeSpaceHeight)
{
// Item placed successfully
items.Add(item);
coords.Add(new Point(curX + leftMargin, curY + topMargin));
curX += itemSize.Width;
if (itemSize.Height > maxHeight)
{
maxHeight = itemSize.Height;
}
}
else if (_printOptions.PlaceholderAutoRotate && (rotatedSize.Width <= freeSpaceWidth && rotatedSize.Height <= freeSpaceHeight))
{
// Item placed successfully after a 90-degree rotate.
items.Add(item);
coords.Add(new Point(curX + leftMargin, curY + topMargin));
item.SetSize(rotatedSize);
curX += rotatedSize.Width;
if (rotatedSize.Height > maxHeight)
{
maxHeight = rotatedSize.Height;
}
}
else
{
// Item cannot be inserted into current row - putting it into
// NonPlacedItems queue for trying to insert into next rows.
AddToNonPlacedItems(item);
isRowFilled = true;
}
curX += _horizontalSpacing;
if (curX >= pageWidth)
{
isRowFilled = true;
}
}
// Shifting to next row. If intMaxHeight == -1 - this means that
// no one Item has been inserted on current step => current Item
// of the queue can be placed only on next page => this page is filled.
if (maxHeight == -1)
{
isPageFilled = true;
}
else
{
curX = 0;
curY += maxHeight + _verticalSpacing;
if (curY > pageHeight)
{
isPageFilled = true;
}
}
}
e.HasMorePages = HasMorePages();
}
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);
}
