/// <summary>
/// Compute the rectangle in which the elements should be positioned.
/// </summary>
/// <returns>
/// If this panel is in an <see cref="Adornment"/> and is its <see cref="Node.LocationElement"/>,
/// return the <see cref="Adornment.AdornedElement"/>'s size.
/// Otherwise return a <c>Rect</c> based on this first child's <c>DesiredSize</c>.
/// Only the Width and Height of the Rect matter in the calculations performed by
/// <see cref="MeasureOverride"/> and <see cref="ArrangeOverride"/>.
/// </returns>
protected virtual Rect ComputeBorder()
{
Adornment ad = Diagram.FindAncestor <Adornment>(this);
if (ad != null)
{
FrameworkElement elt = ad.AdornedElement;
if (elt != null && this == ad.LocationElement)
{
Size sz = ad.GetEffectiveSize(elt);
if (sz.Width > 0 && sz.Height > 0)
{
return(new Rect(0, 0, sz.Width, sz.Height));
}
}
}
PrintManager.PageInfo pinfo = this.DataContext as PrintManager.PageInfo;
if (pinfo != null)
{
return(pinfo.Viewport);
}
Size s = this.DesiredSize;
foreach (UIElement child in this.Children)
{
s = child.DesiredSize;
break;
}
return(new Rect(0, 0, s.Width, s.Height));
}
private UIElement GetPage(int pageNumber) {
if (this.Diagram == null) return null;
DiagramPanel panel = this.Diagram.Panel;
if (panel == null) return null;
int x = pageNumber % this.EffectiveColumns;
int y = pageNumber / this.EffectiveColumns;
Rect b = this.EffectiveBounds;
Size sz = this.EffectivePageSize;
Rect viewb = new Rect(b.X + x*sz.Width,
b.Y + y*sz.Height,
Math.Min(sz.Width, Math.Max(1, b.Width-x*sz.Width)),
Math.Min(sz.Height, Math.Max(1, b.Height-y*sz.Height)));
double sc = this.EffectiveScale;
Size pixsz = new Size(viewb.Width*sc, viewb.Height*sc);
DiagramPanel ppanel = panel.GrabPrintingPanel(viewb, sc, this.PartsToPrint);
Thickness th = this.Margin;
if (Double.IsNaN(th.Left) || th.Left > pixsz.Width/2) th.Left = Math.Min(50, pixsz.Width/2);
if (Double.IsNaN(th.Top) || th.Top > pixsz.Height/2) th.Top = Math.Min(50, pixsz.Height/2);
PrintManager.PageInfo info = new PrintManager.PageInfo() {
Diagram = this.Diagram,
Index = pageNumber+1,
Count = this.PageCount,
Column = x+1,
ColumnCount = this.EffectiveColumns,
Row = y+1,
RowCount = this.EffectiveRows,
TotalBounds = this.EffectiveBounds,
ViewportBounds = viewb,
Scale = sc,
Size = this.PageSize,
Viewport = new Rect(th.Left, th.Top, pixsz.Width, pixsz.Height)
};
Canvas root = new Canvas();
Diagram diagram = this.Diagram;
if (diagram != null &&
(this.PageOptions & PrintPageOptions.Background) != 0) {
root.Background = diagram.Background;
}
DataTemplate backtemplate = this.BackgroundTemplate;
if (backtemplate != null) {
ContentPresenter back = new ContentPresenter();
back.Content = info;
back.ContentTemplate = backtemplate;
Canvas.SetLeft(back, th.Left);
Canvas.SetTop(back, th.Top);
root.Children.Add(back);
}
if (diagram != null && diagram.GridVisible && diagram.GridPattern != null &&
(this.PageOptions & PrintPageOptions.Grid) != 0) {
GridPattern grid = diagram.GridPattern;
grid.DoUpdateBackgroundGrid(panel, new Rect(viewb.X, viewb.Y, sz.Width, sz.Height), sc, false);
grid.Width = viewb.Width;
grid.Height = viewb.Height;
Canvas.SetLeft(grid, th.Left);
Canvas.SetTop(grid, th.Top);
root.Children.Add(grid);
}
// instead of ppanel.UpdateScrollTransform(new Point(viewb.X, viewb.Y), sc, pixsz, false):
var tg = new System.Windows.Media.TransformGroup();
tg.Children.Add(new System.Windows.Media.TranslateTransform() { X = -viewb.X, Y = -viewb.Y });
tg.Children.Add(new System.Windows.Media.ScaleTransform() { ScaleX = sc, ScaleY = sc });
ppanel.RenderTransform = tg;
// clip
foreach (UIElement lay in ppanel.Children) {
lay.Clip = new System.Windows.Media.RectangleGeometry() { Rect = new Rect(viewb.X, viewb.Y, pixsz.Width/sc, pixsz.Height/sc) };
}
Canvas.SetLeft(ppanel, th.Left);
Canvas.SetTop(ppanel, th.Top);
root.Children.Add(ppanel);
DataTemplate foretemplate = this.ForegroundTemplate;
if (foretemplate != null) {
ContentPresenter fore = new ContentPresenter();
fore.Content = info;
fore.ContentTemplate = foretemplate;
Canvas.SetLeft(fore, th.Left);
Canvas.SetTop(fore, th.Top);
root.Children.Add(fore);
}
root.Measure(this.PageSize);
root.Arrange(new Rect(0, 0, this.PageSize.Width, this.PageSize.Height));
return root;
}
private UIElement GetPage(int pageNumber)
{
if (this.Diagram == null)
{
return(null);
}
DiagramPanel panel = this.Diagram.Panel;
if (panel == null)
{
return(null);
}
int x = pageNumber % this.EffectiveColumns;
int y = pageNumber / this.EffectiveColumns;
Rect b = this.EffectiveBounds;
Size sz = this.EffectivePageSize;
Rect viewb = new Rect(b.X + x * sz.Width,
b.Y + y * sz.Height,
Math.Min(sz.Width, Math.Max(1, b.Width - x * sz.Width)),
Math.Min(sz.Height, Math.Max(1, b.Height - y * sz.Height)));
double sc = this.EffectiveScale;
Size pixsz = new Size(viewb.Width * sc, viewb.Height * sc);
DiagramPanel ppanel = panel.GrabPrintingPanel(viewb, sc, this.PartsToPrint);
Thickness th = this.Margin;
if (Double.IsNaN(th.Left) || th.Left > pixsz.Width / 2)
{
th.Left = Math.Min(50, pixsz.Width / 2);
}
if (Double.IsNaN(th.Top) || th.Top > pixsz.Height / 2)
{
th.Top = Math.Min(50, pixsz.Height / 2);
}
PrintManager.PageInfo info = new PrintManager.PageInfo()
{
Diagram = this.Diagram,
Index = pageNumber + 1,
Count = this.PageCount,
Column = x + 1,
ColumnCount = this.EffectiveColumns,
Row = y + 1,
RowCount = this.EffectiveRows,
TotalBounds = this.EffectiveBounds,
ViewportBounds = viewb,
Scale = sc,
Size = this.PageSize,
Viewport = new Rect(th.Left, th.Top, pixsz.Width, pixsz.Height)
};
Canvas root = new Canvas();
Diagram diagram = this.Diagram;
if (diagram != null &&
(this.PageOptions & PrintPageOptions.Background) != 0)
{
root.Background = diagram.Background;
}
DataTemplate backtemplate = this.BackgroundTemplate;
if (backtemplate != null)
{
ContentPresenter back = new ContentPresenter();
back.Content = info;
back.ContentTemplate = backtemplate;
Canvas.SetLeft(back, th.Left);
Canvas.SetTop(back, th.Top);
root.Children.Add(back);
}
if (diagram != null && diagram.GridVisible && diagram.GridPattern != null &&
(this.PageOptions & PrintPageOptions.Grid) != 0)
{
GridPattern grid = diagram.GridPattern;
grid.DoUpdateBackgroundGrid(panel, new Rect(viewb.X, viewb.Y, sz.Width, sz.Height), sc, false);
grid.Width = viewb.Width;
grid.Height = viewb.Height;
Canvas.SetLeft(grid, th.Left);
Canvas.SetTop(grid, th.Top);
root.Children.Add(grid);
}
// instead of ppanel.UpdateScrollTransform(new Point(viewb.X, viewb.Y), sc, pixsz, false):
var tg = new System.Windows.Media.TransformGroup();
tg.Children.Add(new System.Windows.Media.TranslateTransform()
{
X = -viewb.X, Y = -viewb.Y
});
tg.Children.Add(new System.Windows.Media.ScaleTransform()
{
ScaleX = sc, ScaleY = sc
});
ppanel.RenderTransform = tg;
// clip
foreach (UIElement lay in ppanel.Children)
{
lay.Clip = new System.Windows.Media.RectangleGeometry()
{
Rect = new Rect(viewb.X, viewb.Y, pixsz.Width / sc, pixsz.Height / sc)
};
}
Canvas.SetLeft(ppanel, th.Left);
Canvas.SetTop(ppanel, th.Top);
root.Children.Add(ppanel);
DataTemplate foretemplate = this.ForegroundTemplate;
if (foretemplate != null)
{
ContentPresenter fore = new ContentPresenter();
fore.Content = info;
fore.ContentTemplate = foretemplate;
Canvas.SetLeft(fore, th.Left);
Canvas.SetTop(fore, th.Top);
root.Children.Add(fore);
}
root.Measure(this.PageSize);
root.Arrange(new Rect(0, 0, this.PageSize.Width, this.PageSize.Height));
return(root);
}
