/// <summary> Creates the SinglePrintedPage with the correct layout. </summary>
private SinglePrintedPage CreateNthPage(int pageNumber)
{
bool shouldShowBorder = pageNumber % 2 == 0;
Visibility showBorder = shouldShowBorder
? Visibility.Visible
: Visibility.Collapsed;
var margin = new Thickness(
Settings.Default.Margin_Left * PixelsPerInch,
Settings.Default.Margin_Top * PixelsPerInch,
Settings.Default.Margin_Right * PixelsPerInch,
Settings.Default.Margin_Bottom * PixelsPerInch
);
var page = new SinglePrintedPage
{
Header = { Tag = _practiceNumberTitle },
Categories = { Visibility = showBorder },
Footer = { Visibility = showBorder },
Width = PixelsPerInch * 8.5 - margin.Left - margin.Right,
Height = PixelsPerInch * 11 - margin.Top - margin.Top,
DataContext = _viewModel,
Margin = margin
};
// clear its children that are there only for mocking purposes.
page.PrimaryContent.Children.Clear();
return(page);
}
/// <summary>
/// Creates all a collection of pages that need to be printed if the view model were to be
/// printed.
/// </summary>
public IEnumerable <PageContent> CreatePages()
{
int pageNumber = 1;
int startIndexToLayout = 0;
var pagesToPrint = new List <SinglePrintedPage>();
while (startIndexToLayout < _controlsToPlace.Count)
{
var currentPage = CreateNthPage(pageNumber);
startIndexToLayout = LayoutAsManyControlsAsPossible(currentPage, startIndexToLayout);
pagesToPrint.Add(currentPage);
pageNumber++;
}
// we always want an even number of pages
while (pageNumber % 2 != 1)
{
pagesToPrint.Add(CreateNthPage(pageNumber));
pageNumber++;
}
// update the page counts to make sure that it actually works
for (var i = 0; i < pagesToPrint.Count; i++)
{
SinglePrintedPage tempQualifier = pagesToPrint[i];
tempQualifier.PageNumber = i + 1;
tempQualifier.TotalNumberOfPages = pagesToPrint.Count;
}
return(pagesToPrint.Select(ConstructPageContentFor));
}
/// <summary> Create a new PageControl for the given printed page. </summary>
private static PageContent ConstructPageContentFor(SinglePrintedPage singlePrintedPage)
{
var page = new PageContent();
page.Child = new FixedPage();
page.Child.Children.Add(singlePrintedPage);
return(page);
}
/// <summary> Put as many controls from the collection on the current page. </summary>
/// <param name="currentPage"> The current page on which controls should be laid out. </param>
/// <param name="controlIndex"> The index of the first control to add. </param>
/// <returns> The index of the next control to lay out on the next page. </returns>
private int LayoutAsManyControlsAsPossible(SinglePrintedPage currentPage,
int controlIndex)
{
bool hasMoreSpace = true;
while (controlIndex < _controlsToPlace.Count && hasMoreSpace)
{
var controlToPlace = _controlsToPlace[controlIndex];
currentPage.PrimaryContent.Children.Add(controlToPlace);
currentPage.UpdateLayout();
currentPage.Measure(new Size(currentPage.Width, currentPage.Height));
currentPage.Arrange(new Rect(0, 0, currentPage.Width, currentPage.Height));
if (!IsUserVisible(controlToPlace, currentPage.AllowedSpace))
{
hasMoreSpace = false;
currentPage.PrimaryContent.Children.Remove(controlToPlace);
controlIndex--;
if (controlIndex > 0)
{
// titles are always attached to the next sub-section
var previousControl = _controlsToPlace[controlIndex];
if ((previousControl.Content as SubSectionEntryViewModel)?.SectionType == SubSectionType.Title)
{
currentPage.PrimaryContent.Children.Remove(previousControl);
controlIndex--;
}
}
}
controlIndex++;
}
return(controlIndex);
}
