/// <summary>
/// Show an <see cref="Adornment"/> with resize handles at points along the edge of bounds of the <see cref="AdornedElement"/>,
/// if the node is selected and visible and if <see cref="Northwoods.GoXam.Part.CanResize"/> is true.
/// </summary>
/// <param name="part"></param>
/// <remarks>
/// <para>
/// First this finds the element in the visual tree of the <paramref name="part"/> that should
/// get the resize adornment and that the user will be able to resize interactively.
/// It finds the element that has the <see cref="Part.ResizeElementName"/> property of the part.
/// If the <see cref="Part.ResizeElementName"/> property is null, as it is by default, it uses
/// the part's <see cref="Part.SelectionElement"/>.
/// </para>
/// <para>
/// It then constructs the adornment template, associating it with the chosen resize element.
/// </para>
/// <para>
/// You can change the template used to create the adornment by setting <see cref="Part.ResizeAdornmentTemplate"/>.
/// If that property is null, this uses a default template with eight resize handles
/// at the four corners and at the middles of the four sides.
/// </para>
/// <para>
/// This only gives a resize adornment to <see cref="Node"/>s, not to <see cref="Link"/>s.
/// </para>
/// </remarks>
public override void UpdateAdornments(Part part)
{
if (part == null || part is Link)
{
return; // can't resize links
}
Adornment adornment = null;
if (part.IsSelected)
{
FrameworkElement selelt = null;
String eltname = part.ResizeElementName;
if (eltname != null)
{
selelt = part.FindNamedDescendant(eltname);
}
if (selelt == null)
{
selelt = part.SelectionElement;
}
if (selelt != null && part.CanResize() && Part.IsVisibleElement(selelt))
{
adornment = part.GetAdornment(ToolCategory);
if (adornment == null)
{
DataTemplate template = part.ResizeAdornmentTemplate;
if (template == null)
{
template = Diagram.FindDefault <DataTemplate>("DefaultResizeAdornmentTemplate");
}
adornment = part.MakeAdornment(selelt, template);
if (adornment != null)
{
adornment.Category = ToolCategory;
adornment.LocationSpot = Spot.TopLeft;
}
}
if (adornment != null)
{
Node node = (Node)part;
Point loc = part.GetElementPoint(selelt, Spot.TopLeft);
// use the node's angle, not part.GetAngle(selelt)
//?? this can be wrong if there are additional rotational transforms in the tree
double angle = node.RotationAngle;
UpdateResizeHandles(adornment.VisualElement, angle);
adornment.Location = loc;
adornment.RotationAngle = angle;
adornment.Remeasure();
}
}
}
part.SetAdornment(ToolCategory, adornment);
}
/// <summary>
/// Show an <see cref="Adornment"/> with resize handles at points along the edge of bounds of the <see cref="AdornedElement"/>,
/// if the node is selected and visible and if <see cref="Northwoods.GoXam.Part.CanResize"/> is true.
/// </summary>
/// <param name="part"></param>
/// <remarks>
/// You can change the template used to create the adornment by setting <see cref="Part.ResizeAdornmentTemplate"/>.
/// If that property is null, this uses a default template with eight resize handles
/// at the four corners and at the middles of the four sides.
/// </remarks>
public override void UpdateAdornments(Part part)
{
if (part == null || part is Link)
{
return; // can't resize links
}
Adornment adornment = null;
if (part.IsSelected)
{
FrameworkElement selelt = part.SelectionElement;
if (selelt != null && part.CanResize() && Part.IsVisibleElement(selelt))
{
adornment = part.GetAdornment(ToolCategory);
if (adornment == null)
{
DataTemplate template = part.ResizeAdornmentTemplate;
if (template == null)
{
template = Diagram.FindDefault <DataTemplate>("DefaultResizeAdornmentTemplate");
}
adornment = part.MakeAdornment(selelt, template);
if (adornment != null)
{
adornment.Category = ToolCategory;
adornment.LocationSpot = Spot.TopLeft;
}
}
if (adornment != null)
{
Point loc = part.GetElementPoint(selelt, Spot.TopLeft);
double angle = part.GetAngle(selelt);
UpdateResizeHandles(adornment.VisualElement, angle);
adornment.Location = loc;
adornment.RotationAngle = angle;
adornment.Remeasure();
}
}
}
part.SetAdornment(ToolCategory, adornment);
}
private void LayoutBox(TextBox box)
{
if (box == null)
{
return;
}
TextEditingTool tool = this.TextEditingTool;
if (tool == null)
{
return;
}
TextBlock block = tool.TextBlock;
if (block == null)
{
return;
}
Adornment edad = tool.EditorAdornment;
if (edad == null)
{
return;
}
Thickness thick = box.BorderThickness;
Thickness pad = box.Padding;
if (block.TextWrapping != TextWrapping.NoWrap)
{
double w = MeasureWrappedTextWidth(box.Text, box, block);
Size es = edad.GetEffectiveSize(block);
double ww = Math.Max(w, es.Width); // at least existing width
box.MaxWidth = ww + thick.Left + thick.Right + pad.Left + pad.Right + 6; //??? hard-coded sizes
//Diagram.Debug(Diagram.Str(ds) + Diagram.Str(es) + " ww: " + Diagram.Str(ww) + " maxw: " + Diagram.Str(box.MaxWidth));
}
edad.Remeasure();
}