/// <summary>
/// Start reshaping.
/// </summary>
/// <remarks>
/// This sets the <see cref="ReshapingBaseTool.Handle"/> to the result of <see cref="DiagramTool.FindToolHandleAt"/>;
/// if it is null, this method does not actually activate this tool.
/// If there is a reshape handle,
/// this sets <see cref="ReshapingBaseTool.AdornedElement"/> and <see cref="HandleIndex"/>,
/// remembers the <see cref="OriginalPoint"/>,
/// starts a transaction (<see cref="DiagramTool.StartTransaction"/>),
/// and sets <see cref="DiagramTool.Active"/> to true.
/// </remarks>
public override void DoActivate()
{
Diagram diagram = this.Diagram;
if (diagram == null)
{
return;
}
this.Handle = FindToolHandleAt(diagram.FirstMousePointInModel, ToolCategory);
if (this.Handle == null)
{
return;
}
this.AdornedElement = FindAdornedElement(this.Handle);
this.HandleIndex = LinkPanel.GetIndex(this.Handle);
Link link = this.AdornedLink; // this should be non-null, checked by FindReshapeHandle
this.OriginalPoint = link.Route.GetPoint(this.HandleIndex);
this.OriginalPoints = link.Route.Points.ToList();
StartTransaction(ToolCategory);
// make sure a CurrentEdit exists; otherwise no model changes during the transaction
// causes the transaction to be thrown away, which means any "UpdateDelayedRoutes" transaction
// won't have a committed transaction to coalesce.
var umgr = diagram.Model.UndoManager;
if (umgr != null)
{
umgr.CurrentEdit = new Northwoods.GoXam.Model.UndoManager.CompoundEdit();
}
this.Active = true;
}
public override void DoCancel()
{
if (this.Label != null)
{
LinkPanel.SetOffset(this.Label, this.OriginalOffset);
}
base.DoCancel();
}
public override object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (value == null)
{
return(null);
}
return(LinkPanel.IsFilled((Arrowhead)value) ? new SolidColorBrush(Colors.LightGray) : null);
}
public override void DoActivate()
{
StartTransaction("Shifted Label");
this.Label = FindLabel();
if (this.Label != null)
{
this.OriginalOffset = LinkPanel.GetOffset(this.Label);
}
base.DoActivate();
}
private FrameworkElement FindLabel()
{
#if SILVERLIGHT
var elt = this.Diagram.Panel.FindElementAt <UIElement>(this.Diagram.LastMousePointInModel, e => e, null, SearchLayers.Links);
if (elt == null)
{
return(null);
}
Link link = Part.FindAncestor <Link>(elt);
if (link == null)
{
return(null);
}
var parent = System.Windows.Media.VisualTreeHelper.GetParent(elt) as UIElement;
while (parent != null && parent != link && !(parent is LinkPanel))
{
elt = parent;
parent = System.Windows.Media.VisualTreeHelper.GetParent(elt) as UIElement;
}
#else
var elt = this.Diagram.Panel.FindElementAt <System.Windows.Media.Visual>(this.Diagram.LastMousePointInModel, e => e, null, SearchLayers.Links);
if (elt == null)
{
return(null);
}
Link link = Part.FindAncestor <Link>(elt);
if (link == null)
{
return(null);
}
var parent = System.Windows.Media.VisualTreeHelper.GetParent(elt) as System.Windows.Media.Visual;
while (parent != null && parent != link && !(parent is LinkPanel))
{
elt = parent;
parent = System.Windows.Media.VisualTreeHelper.GetParent(elt) as System.Windows.Media.Visual;
}
#endif
if (parent is LinkPanel)
{
FrameworkElement lab = elt as FrameworkElement;
if (lab == null)
{
return(null);
}
// needs to be positioned relative to the MidPoint
if (LinkPanel.GetIndex(lab) != Int32.MinValue)
{
return(null);
}
// also check for movable-ness?
return(lab);
}
return(null);
}
private void UpdateLinkPanelProperties()
{
if (this.Label == null)
{
return;
}
Link link = Part.FindAncestor <Link>(this.Label);
if (link == null)
{
return;
}
Point last = this.Diagram.LastMousePointInModel;
Point mid = link.Route.MidPoint;
// need to rotate this point to account for angle of middle segment
Point p = new Point(last.X - mid.X, last.Y - mid.Y);
LinkPanel.SetOffset(this.Label, RotatePoint(p, -link.Route.MidAngle));
}
/// <summary>
/// Start reshaping.
/// </summary>
/// <remarks>
/// This sets the <see cref="ReshapingBaseTool.Handle"/> to the result of <see cref="DiagramTool.FindToolHandleAt"/>;
/// if it is null, this method does not actually activate this tool.
/// If there is a reshape handle,
/// this sets <see cref="ReshapingBaseTool.AdornedElement"/> and <see cref="HandleIndex"/>,
/// remembers the <see cref="OriginalPoint"/>,
/// starts a transaction (<see cref="DiagramTool.StartTransaction"/>),
/// and sets <see cref="DiagramTool.Active"/> to true.
/// </remarks>
public override void DoActivate()
{
Diagram diagram = this.Diagram;
if (diagram == null)
{
return;
}
this.Handle = FindToolHandleAt(diagram.FirstMousePointInModel, ToolCategory);
if (this.Handle == null)
{
return;
}
this.AdornedElement = FindAdornedElement(this.Handle);
this.HandleIndex = LinkPanel.GetIndex(this.Handle);
Link link = this.AdornedLink; // this should be non-null, checked by FindReshapeHandle
this.OriginalPoint = link.Route.GetPoint(this.HandleIndex);
this.OriginalPoints = link.Route.Points.ToList();
StartTransaction("Reshape");
this.Active = true;
}
/// <summary>
/// Show an <see cref="Adornment"/> with reshape handles at each of the interesting points of the link's <see cref="Route"/>,
/// if the link is selected and visible and if <see cref="Northwoods.GoXam.Part.CanReshape"/> is true.
/// </summary>
/// <param name="part"></param>
/// <remarks>
/// <para>
/// This produces reshape handles at each point of the route, starting with
/// <see cref="Northwoods.GoXam.Route.FirstPickIndex"/> and ending with
/// <see cref="Northwoods.GoXam.Route.LastPickIndex"/>.
/// Depending on whether <see cref="Northwoods.GoXam.Route.Orthogonal"/> is true,
/// this will call <see cref="ReshapingBaseTool.SetReshapeBehavior"/> and the <c>Cursor</c> to
/// limit the directions in which the user may drag the handle.
/// </para>
/// <para>
/// You can change the template used to create each reshape handle by setting <see cref="Link.LinkReshapeHandleTemplate"/>.
/// If that property is null, this uses a default template produces a small square.
/// </para>
/// </remarks>
public override void UpdateAdornments(Part part) {
Link link = part as Link;
if (link == null) return; // no Nodes
Adornment adornment = null;
if (link.IsSelected) {
FrameworkElement selelt = link.Path;
if (selelt != null && link.CanReshape() && Part.IsVisibleElement(selelt)) {
adornment = link.GetAdornment(ToolCategory);
if (adornment == null) {
Route route = link.Route;
if (route != null) {
IEnumerable<Point> pts = route.Points;
int numpts = route.PointsCount;
bool ortho = route.Orthogonal;
if (pts != null && numpts > 2) {
// LinkReshapeHandleTemplate: for each reshape handle, not for whole adornment
DataTemplate template = link.LinkReshapeHandleTemplate;
if (template == null) template = Diagram.FindDefault<DataTemplate>("DefaultLinkReshapeHandleTemplate");
LinkPanel panel = new LinkPanel();
int firstindex = route.FirstPickIndex;
int lastindex = route.LastPickIndex;
// don't bother creating handles for firstindex or lastindex
for (int i = firstindex+1; i <= lastindex-1; i++) {
// expand the DataTemplate to make a copy of a reshape handle
FrameworkElement h = template.LoadContent() as FrameworkElement;
// needs to be a FrameworkElement so we can set its Cursor
if (h == null) continue;
// identify this particular handle within the LinkPanel
LinkPanel.SetIndex(h, i);
// now determines its reshape behavior and cursor, depending on whether Orthogonal et al.
if (i == firstindex) {
// default ReshapeBehavior.None
} else if (i == firstindex+1 && ortho) {
Point a = route.GetPoint(firstindex);
Point b = route.GetPoint(firstindex+1);
if (Geo.IsApprox(a.X, b.X)) {
SetReshapeBehavior(h, ReshapeBehavior.Vertical);
h.Cursor = Part.SizeNSCursor;
} else if (Geo.IsApprox(a.Y, b.Y)) {
SetReshapeBehavior(h, ReshapeBehavior.Horizontal);
h.Cursor = Part.SizeWECursor;
}
} else if (i == lastindex-1 && ortho) {
Point a = route.GetPoint(lastindex-1);
Point b = route.GetPoint(lastindex);
if (Geo.IsApprox(a.X, b.X)) {
SetReshapeBehavior(h, ReshapeBehavior.Vertical);
h.Cursor = Part.SizeNSCursor;
} else if (Geo.IsApprox(a.Y, b.Y)) {
SetReshapeBehavior(h, ReshapeBehavior.Horizontal);
h.Cursor = Part.SizeWECursor;
}
} else if (i == lastindex) {
// default ReshapeBehavior.None
} else {
SetReshapeBehavior(h, ReshapeBehavior.All);
h.Cursor = Part.SizeAllCursor;
}
panel.Children.Add(h);
}
adornment = new Adornment(); // for LinkReshapingTool.UpdateAdornments
adornment.AdornedElement = selelt;
adornment.Category = ToolCategory;
adornment.Content = panel; // just provide the FrameworkElement as the Content and as the Visual Child
adornment.LocationSpot = Spot.TopLeft;
}
}
}
if (adornment != null) {
Point loc = link.GetElementPoint(selelt, Spot.TopLeft);
adornment.Location = loc;
adornment.RotationAngle = link.GetAngle(selelt);
adornment.Remeasure();
}
}
}
link.SetAdornment(ToolCategory, adornment);
}
private void DoReshape(Point newPoint)
{
switch (GetReshapeBehavior(this.Handle))
{
case ReshapeBehavior.Horizontal:
newPoint.X = Math.Floor(newPoint.X / 4 + 0.5) * 4;
break;
case ReshapeBehavior.Vertical:
newPoint.Y = Math.Floor(newPoint.Y / 4 + 0.5) * 4;
break;
default:
break;
}
Link link = this.AdornedLink;
int idx = LinkPanel.GetIndex(this.Handle);
Rect portb;
if (idx == 0)
{
portb = link.FromNode.GetElementBounds(link.FromPort);
}
else
{
portb = link.ToNode.GetElementBounds(link.ToPort);
}
if (portb.Width < 1 || portb.Height < 1)
{
return;
}
Point ctr = Spot.Center.PointInRect(portb);
double x = (newPoint.X - portb.Left) / portb.Width;
double y = (newPoint.Y - portb.Top) / portb.Height;
x = Math.Max(0, Math.Min(x, 1));
y = Math.Max(0, Math.Min(y, 1));
switch (GetReshapeBehavior(this.Handle))
{
case ReshapeBehavior.Horizontal:
y = newPoint.Y < ctr.Y ? 0 : 1;
break;
case ReshapeBehavior.Vertical:
x = newPoint.X < ctr.X ? 0 : 1;
break;
default:
break;
}
Route route = link.Route;
if (idx == 0)
{
route.FromSpot = new Spot(x, y);
}
else
{
route.ToSpot = new Spot(x, y);
}
}
/// <summary>
/// Show an <see cref="Adornment"/> with <see cref="ToolHandle"/>s at each end of the link's route,
/// if the link is selected and visible.
/// </summary>
/// <param name="part"></param>
/// <remarks>
/// </remarks>
public override void UpdateAdornments(Part part)
{
Link link = part as Link;
if (link == null)
{
return; // no Nodes
}
Adornment adornment = null;
if (link.IsSelected)
{
FrameworkElement selelt = link.Path;
if (selelt != null && Part.IsVisibleElement(selelt))
{
adornment = link.GetAdornment(ToolCategory);
if (adornment == null)
{
Route route = link.Route;
if (route != null)
{
IList <Point> pts = route.Points;
int numpts = route.PointsCount;
if (pts != null && numpts > 2)
{
// This tool's Adornments consists of a LinkPanel containing two ToolHandles.
LinkPanel panel = new LinkPanel();
#if SILVERLIGHT
var h = new System.Windows.Shapes.Path();
#else
var h = new ToolHandle();
#endif
// of course you can customize the appearance of the shift handles here...
NodePanel.SetFigure(h, NodeFigure.Rectangle);
h.Width = 6;
h.Height = 6;
h.Fill = new SolidColorBrush(Colors.Orange);
LinkPanel.SetIndex(h, 0);
LinkPanel.SetFraction(h, 0.5);
if (pts[0].X == pts[1].X && pts[0].Y != pts[1].Y)
{
SetReshapeBehavior(h, ReshapeBehavior.Horizontal);
h.Cursor = System.Windows.Input.Cursors.SizeWE;
}
else if (pts[0].Y == pts[1].Y && pts[0].X != pts[1].X)
{
SetReshapeBehavior(h, ReshapeBehavior.Vertical);
h.Cursor = System.Windows.Input.Cursors.SizeNS;
}
else
{
SetReshapeBehavior(h, ReshapeBehavior.All);
#if !SILVERLIGHT
h.Cursor = System.Windows.Input.Cursors.SizeAll;
#endif
}
panel.Children.Add(h);
#if SILVERLIGHT
h = new System.Windows.Shapes.Path();
#else
h = new ToolHandle();
#endif
NodePanel.SetFigure(h, NodeFigure.Rectangle);
h.Width = 6;
h.Height = 6;
h.Fill = new SolidColorBrush(Colors.Orange);
LinkPanel.SetIndex(h, -1);
LinkPanel.SetFraction(h, 0.5);
SetReshapeBehavior(h, ReshapeBehavior.All);
if (pts[numpts - 1].X == pts[numpts - 2].X && pts[numpts - 1].Y != pts[numpts - 2].Y)
{
SetReshapeBehavior(h, ReshapeBehavior.Horizontal);
h.Cursor = System.Windows.Input.Cursors.SizeWE;
}
else if (pts[numpts - 1].Y == pts[numpts - 2].Y && pts[numpts - 1].X != pts[numpts - 2].X)
{
SetReshapeBehavior(h, ReshapeBehavior.Vertical);
h.Cursor = System.Windows.Input.Cursors.SizeNS;
}
else
{
SetReshapeBehavior(h, ReshapeBehavior.All);
#if !SILVERLIGHT
h.Cursor = System.Windows.Input.Cursors.SizeAll;
#endif
}
panel.Children.Add(h);
adornment = new Adornment();
adornment.AdornedElement = selelt;
adornment.Category = ToolCategory;
adornment.Content = panel; // just provide the FrameworkElement as the Content and as the Visual Child
adornment.LocationSpot = Spot.TopLeft;
}
}
}
if (adornment != null)
{
Point loc = link.GetElementPoint(selelt, Spot.TopLeft);
adornment.Location = loc;
adornment.RotationAngle = link.GetAngle(selelt);
adornment.Remeasure();
}
}
}
link.SetAdornment(ToolCategory, adornment);
}
/// <summary>
/// Show an <see cref="Adornment"/> with reshape handles at each of the interesting points of the link's <see cref="Route"/>,
/// if the link is selected and visible and if <see cref="Northwoods.GoXam.Part.CanReshape"/> is true.
/// </summary>
/// <param name="part"></param>
/// <remarks>
/// <para>
/// This produces reshape handles at each point of the route, starting with
/// <see cref="Northwoods.GoXam.Route.FirstPickIndex"/> and ending with
/// <see cref="Northwoods.GoXam.Route.LastPickIndex"/>.
/// Depending on whether <see cref="Northwoods.GoXam.Route.Orthogonal"/> is true,
/// this will call <see cref="ReshapingBaseTool.SetReshapeBehavior"/> and the <c>Cursor</c> to
/// limit the directions in which the user may drag the handle.
/// </para>
/// <para>
/// You can change the template used to create each reshape handle by setting <see cref="Link.LinkReshapeHandleTemplate"/>.
/// If that property is null, this uses a default template produces a small square.
/// </para>
/// </remarks>
public override void UpdateAdornments(Part part)
{
Link link = part as Link;
if (link == null)
{
return; // no Nodes
}
Adornment adornment = null;
if (link.IsSelected)
{
FrameworkElement selelt = link.Path;
if (selelt != null && link.CanReshape() && Part.IsVisibleElement(selelt))
{
adornment = link.GetAdornment(ToolCategory);
if (adornment == null)
{
Route route = link.Route;
if (route != null)
{
IEnumerable <Point> pts = route.Points;
int numpts = route.PointsCount;
bool ortho = route.Orthogonal;
if (pts != null && numpts > 2)
{
// LinkReshapeHandleTemplate: for each reshape handle, not for whole adornment
DataTemplate template = link.LinkReshapeHandleTemplate;
if (template == null)
{
template = Diagram.FindDefault <DataTemplate>("DefaultLinkReshapeHandleTemplate");
}
LinkPanel panel = new LinkPanel();
int firstindex = route.FirstPickIndex;
int lastindex = route.LastPickIndex;
// don't bother creating handles for firstindex or lastindex
for (int i = firstindex + 1; i <= lastindex - 1; i++)
{
// expand the DataTemplate to make a copy of a reshape handle
FrameworkElement h = template.LoadContent() as FrameworkElement;
// needs to be a FrameworkElement so we can set its Cursor
if (h == null)
{
continue;
}
// identify this particular handle within the LinkPanel
LinkPanel.SetIndex(h, i);
// now determines its reshape behavior and cursor, depending on whether Orthogonal et al.
if (i == firstindex)
{
// default ReshapeBehavior.None
}
else if (i == firstindex + 1 && ortho)
{
Point a = route.GetPoint(firstindex);
Point b = route.GetPoint(firstindex + 1);
if (Geo.IsApprox(a.X, b.X))
{
SetReshapeBehavior(h, ReshapeBehavior.Vertical);
h.Cursor = Part.SizeNSCursor;
}
else if (Geo.IsApprox(a.Y, b.Y))
{
SetReshapeBehavior(h, ReshapeBehavior.Horizontal);
h.Cursor = Part.SizeWECursor;
}
}
else if (i == lastindex - 1 && ortho)
{
Point a = route.GetPoint(lastindex - 1);
Point b = route.GetPoint(lastindex);
if (Geo.IsApprox(a.X, b.X))
{
SetReshapeBehavior(h, ReshapeBehavior.Vertical);
h.Cursor = Part.SizeNSCursor;
}
else if (Geo.IsApprox(a.Y, b.Y))
{
SetReshapeBehavior(h, ReshapeBehavior.Horizontal);
h.Cursor = Part.SizeWECursor;
}
}
else if (i == lastindex)
{
// default ReshapeBehavior.None
}
else
{
SetReshapeBehavior(h, ReshapeBehavior.All);
h.Cursor = Part.SizeAllCursor;
}
panel.Children.Add(h);
}
adornment = new Adornment(); // for LinkReshapingTool.UpdateAdornments
adornment.AdornedElement = selelt;
adornment.Category = ToolCategory;
adornment.Content = panel; // just provide the FrameworkElement as the Content and as the Visual Child
adornment.LocationSpot = Spot.TopLeft;
}
}
}
if (adornment != null)
{
Point loc = link.GetElementPoint(selelt, Spot.TopLeft);
adornment.Location = loc;
adornment.RotationAngle = link.GetAngle(selelt);
adornment.Remeasure();
}
}
}
link.SetAdornment(ToolCategory, adornment);
}
public override object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return(LinkPanel.IsFilled((Arrowhead)value) ? this.Fill : null);
}
