/// <summary>
/// When overridden in a derived class, measures the size in layout
/// required for child elements and determines a size for the System.Windows.FrameworkElement-derived class.
/// </summary>
/// <param name="availableSize">The available size that this element can give to child elements. Infinity can be specified as a value
/// to indicate that the element will size to whatever content is available.</param>
/// <returns>The size that this element determines it needs during layout, based on its calculations of child element sizes.</returns>
protected override System.Windows.Size MeasureOverride(System.Windows.Size availableSize)
{
double totalHeight = 0;
double maxWidth = 0;
if (!double.IsPositiveInfinity(availableSize.Width))
{
maxWidth = availableSize.Width;
}
List <UIElement> nonItemsElements = new List <UIElement>();
foreach (object child in InternalChildren)
{
MenuItem item = child as MenuItem;
if ((item != null) && (item.Visibility != Visibility.Collapsed))
{
item.Measure(availableSize);
totalHeight += item.DesiredSize.Height;
maxWidth = Math.Max(maxWidth, item.DesiredSize.Width);
}
else
{
Separator separator = child as Separator;
if ((separator != null) && (separator.Visibility != Visibility.Collapsed))
{
separator.Measure(availableSize);
totalHeight += separator.DesiredSize.Height;
maxWidth = Math.Max(maxWidth, separator.DesiredSize.Width);
}
else
{
UIElement uiElement = child as UIElement;
if (uiElement != null)
{
nonItemsElements.Add(uiElement);
}
}
}
}
if ((!double.IsPositiveInfinity(availableSize.Height)))
{
if (totalHeight < availableSize.Height)
{
double deltaHeight = (availableSize.Height - totalHeight) / nonItemsElements.Count;
foreach (FrameworkElement item in nonItemsElements)
{
if (item.Visibility != Visibility.Collapsed)
{
item.Measure(new Size(availableSize.Width, deltaHeight));
maxWidth = Math.Max(maxWidth, Math.Max(item.DesiredSize.Width, (item).MinWidth));
totalHeight += Math.Max(item.DesiredSize.Height, (item).MinHeight);
}
}
}
else
{
foreach (FrameworkElement item in nonItemsElements)
{
if (item.Visibility != Visibility.Collapsed)
{
item.Measure(new Size());
maxWidth = Math.Max(maxWidth, Math.Max(item.DesiredSize.Width, item.MinWidth));
totalHeight += Math.Max(item.DesiredSize.Height, item.MinHeight);
}
}
}
}
else
{
foreach (FrameworkElement item in nonItemsElements)
{
if (item.Visibility != Visibility.Collapsed)
{
item.Measure(availableSize);
maxWidth = Math.Max(maxWidth, Math.Max(item.DesiredSize.Width, item.MinWidth));
totalHeight += Math.Max(item.DesiredSize.Height, item.MinHeight);
}
}
}
if (maxWidth < ResizeMinWidth)
{
maxWidth = ResizeMinWidth;
}
if (maxWidth > availableSize.Width)
{
maxWidth = availableSize.Width;
}
if (totalHeight < ResizeMinHeight)
{
totalHeight = ResizeMinHeight;
}
return(new Size(maxWidth, totalHeight));
}
private static void LayoutPage(ref List <ScrabbleSolution> .Enumerator it, FixedPage page, double?fontSize)
{
double marginX = 48;
double marginY = 48;
var sz = new Size(8.5 * 96 - 2 * marginX, 11 * 96 - 2 * marginY);
// This is how we know we are done.
// No more pages to layout if there
// aren't any more solutions to show
if (it.Current == null)
{
return;
}
//Do Page Header
var headerTextBlock = new TextBlock
{
Text = "Scrabble Generator Solutions",
FontSize = 25
};
headerTextBlock.Measure(sz);
FixedPage.SetLeft(headerTextBlock, sz.Width / 2 - headerTextBlock.DesiredSize.Width / 2); // Center the Header
FixedPage.SetTop(headerTextBlock, 48); // Put it at 1/2 inch down
page.Children.Add(headerTextBlock);
var separator = new Separator
{
Width = sz.Width,
Height = 5
};
separator.Measure(sz);
FixedPage.SetLeft(separator, marginX);
FixedPage.SetTop(separator, marginY + headerTextBlock.DesiredSize.Height);
page.Children.Add(separator);
double x = marginX;
double y = marginY + headerTextBlock.DesiredSize.Height + separator.DesiredSize.Height;
double largestY = 0;
do
{
var ctl = new ScrabbleSolutionControl
{
ScrabbleSolution = it.Current,
Margin = new Thickness(10),
};
if (fontSize.HasValue)
{
ctl.FontSize = fontSize.Value;
}
ctl.Measure(sz);
// Page starts with two controls (Heading & separator.. Count==2).
// If we haven't placed a Scrabble Solution (i.e Count==2), and the current
// solution is too damn big to fit, lets keep shrinking the fontsize
// by one until the solution fits! Yes, it will be one solution per page,
// but the good news is that we will manage to print every solution for
// the user, as close to as big as they wanted as possible.
if (page.Children.Count == 2)
{
var newFontSize = ctl.FontSize;
while (ctl.DesiredSize.Width > sz.Width - 2 * marginX || ctl.DesiredSize.Height > sz.Height - marginY)
{
ctl.FontSize = newFontSize--;
ctl.Measure(sz);
}
}
// When we run out of X space, we move down and start over in the x direction
if (x + ctl.DesiredSize.Width > page.Width - 2 * marginX)
{
x = marginX;
y += largestY;
largestY = 0;
}
// When we run out of Y space, the page is full.
if (y + ctl.DesiredSize.Height > page.Height - marginY)
{
break;
}
FixedPage.SetLeft(ctl, x);
FixedPage.SetTop(ctl, y);
page.Children.Add(ctl);
x += ctl.DesiredSize.Width;
largestY = Math.Max(largestY, ctl.DesiredSize.Height);
}while(it.MoveNext() == true);
}