public override bool CanConnectTo(FlowConnector connector)
{
if (!(connector is AlgorithmFlowConnector))
return false;
var algorithmFlowConnector = connector as AlgorithmFlowConnector;
AlgorithmFlowElement inputLayer, outputLayer;
int inputIndex;
if (this.IsOutput)
{
inputIndex = FlowElement.GetConnectorIndex(algorithmFlowConnector.Owner, algorithmFlowConnector);
inputLayer = algorithmFlowConnector.m_LayerOwner;
outputLayer = this.m_LayerOwner;
}
else if (this.IsInput)
{
inputIndex = FlowElement.GetConnectorIndex(this.Owner, this);
inputLayer = this.m_LayerOwner;
outputLayer = algorithmFlowConnector.m_LayerOwner;
}
else
throw new NotSupportedException();
var inputType = inputLayer.Layer.Algorithm.InputTypes[inputIndex];
var outputType = outputLayer.Layer.Algorithm.OutputType;
return inputType == outputType;
}
public static int GetConnectorIndex(FlowElement el, FlowConnector fl)
{
if (fl.IsInput)
{
return(el.InputConnectors.IndexOf(fl));
}
return(el.OutputConnectors.IndexOf(fl));
}
internal static void RenderTo(FlowElement el, RenderAttributes re, bool selected)
{
int ex = (int)(el.X * re.Zoom);
int ey = (int)(el.Y * re.Zoom);
int ew = (int)(el.Width * re.Zoom);
int eh = (int)(el.Height * re.Zoom);
int eiw = (int)Math.Floor(el.ImageWidth * re.Zoom);
int eih = (int)Math.Floor(el.ImageHeight * re.Zoom);
int etx = (int)((el.X + 4) * re.Zoom);
int ety = (int)((el.Y + 4) * re.Zoom);
int aiw = 0, aih = 0;
if (el.m_AdditionalInformation != null)
{
aiw = (int)Math.Floor(el.m_AdditionalInformation.Width * re.Zoom);
aih = (int)Math.Floor(el.m_AdditionalInformation.Height * re.Zoom);
}
re.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
re.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
re.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
re.Graphics.FillRectangle(selected ? m_TitleHighlight : SystemBrushes.Control, ex, ey, ew - 1 * re.Zoom, eh - 1 * re.Zoom);
re.Graphics.DrawRectangle(Pens.Black, ex, ey, ew - 1 * re.Zoom, eh - 1 * re.Zoom);
re.Graphics.DrawString(el.Name, re.Font, SystemBrushes.ControlText, new PointF(etx, ety));
var image = el.Image;
if (image != null && ex + 1 * re.Zoom + eiw > 0 && ey + 21 * re.Zoom + eih > 0)
{
re.Graphics.DrawImage(image, ex + 1 * re.Zoom, ey + 21 * re.Zoom, eiw, eih);
}
var additional = el.m_AdditionalInformation;
if (additional != null && ex + 1 * re.Zoom + aiw > 0 && ey + 21 * re.Zoom + eih + aih > 0)
{
re.Graphics.DrawImage(additional, ex + 1 * re.Zoom, ey + 21 * re.Zoom + eih, aiw, aih);
}
foreach (FlowConnector fl in el.OutputConnectors)
{
FlowConnector.RenderTo(fl, re);
}
foreach (FlowConnector fl in el.InputConnectors)
{
FlowConnector.RenderTo(fl, re);
}
}
internal static void RenderTo(FlowConnector el, RenderAttributes re)
{
re.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
re.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
// If we are input, we draw on the left hand side of the flow element.
int idx = FlowElement.GetConnectorIndex(el.Owner, el);
int sx = (int)Math.Ceiling(re.Graphics.MeasureString(el.Name, re.Font).Width);
float xx = (el.IsInput ? el.Owner.X - CONNECTOR_PADDING : el.Owner.X + el.Owner.Width + CONNECTOR_PADDING) * re.Zoom;
float yy = (el.Owner.Y + idx * (CONNECTOR_SIZE + CONNECTOR_PADDING)) * re.Zoom;
if (el.IsInput)
{
re.Graphics.DrawString(el.Name, re.Font, SystemBrushes.ControlText, new PointF(xx - sx + CONNECTOR_PADDING * re.Zoom, yy));
}
else
{
re.Graphics.DrawString(el.Name, re.Font, SystemBrushes.ControlText, new PointF(xx, yy));
}
el.InvalidationWidth = sx;
el.m_CenterZoomAdjustment = re.Zoom;
sx += CONNECTOR_PADDING;
re.Graphics.DrawRectangle(Pens.Black, xx + (el.IsInput ? -sx : sx), yy, CONNECTOR_SIZE * re.Zoom, CONNECTOR_SIZE * re.Zoom);
if (el.IsInput && el.ConnectedTo != null)
{
foreach (FlowConnector ct in el.ConnectedTo)
{
try
{
re.Graphics.DrawLine(Pens.Blue, el.Center.Apply(re.Zoom), ct.Center.Apply(re.Zoom));
}
catch (OverflowException)
{
}
}
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
// Don't do anything on right-click.
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
if (this.m_ActiveConnection != null)
{
this.m_ActiveConnection = null;
this.Invalidate();
}
else
{
this.SelectedElement = null;
foreach (FlowElement el in this.m_Elements.Reverse<FlowElement>())
{
if (el.Region.Contains(e.Location.Apply(1 / this.Zoom)))
{
this.SelectedElement = el;
this.m_SelectedElementStillHeldDown = true;
this.m_SelectedElementsDrag[el] = new Point(
(int)(e.X / this.Zoom) - el.X,
(int)(e.Y / this.Zoom) - el.Y);
break;
}
}
this.m_LastContextMenuOpenLocation = e.Location;
}
return;
}
// If we are currently dragging, ignore this logic.
if (this.m_SelectedElementStillHeldDown || this.m_PanningStillHeldDown)
return;
// Check to see if the mouse is over an element during left press.
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (this.m_WillMultiselect)
{
this.m_Multiselecting = true;
this.m_MultiselectStartX = e.X;
this.m_MultiselectStartY = e.Y;
this.m_MultiselectEndX = e.X;
this.m_MultiselectEndY = e.Y;
this.m_MultiselectPreviousEndX = e.X;
this.m_MultiselectPreviousEndY = e.Y;
return;
}
if (this.SelectedElements.Count <= 1)
{
this.SelectedElement = null;
}
foreach (FlowElement el in this.m_Elements.Reverse<FlowElement>())
{
if (el.Region.Contains(e.Location.Apply(1 / this.Zoom)))
{
if (this.SelectedElements.Count <= 1)
{
this.SelectedElement = el;
}
this.m_SelectedElementStillHeldDown = true;
this.m_SelectedElementsDrag[el] = new Point(
(int)(e.X / this.Zoom) - el.X,
(int)(e.Y / this.Zoom) - el.Y);
break;
}
}
if (this.SelectedElements.Count > 1)
{
foreach (FlowElement el in this.m_Elements.Reverse<FlowElement>())
{
if (this.SelectedElements.Contains(el))
{
this.m_SelectedElementsDrag[el] = new Point(
(int)(e.X / this.Zoom) - el.X,
(int)(e.Y / this.Zoom) - el.Y);
}
}
}
if (this.SelectedElements.Count > 1 && !this.m_SelectedElementStillHeldDown)
{
this.SelectedElement = null;
}
// If we didn't select an element, see if we clicked on a flow
// connector.
if (this.SelectedElement == null && this.m_ActiveConnection == null)
{
var range = new Rectangle(
e.X - FlowConnector.CONNECTOR_SIZE / 2,
e.Y - FlowConnector.CONNECTOR_SIZE / 2,
FlowConnector.CONNECTOR_SIZE * 2,
FlowConnector.CONNECTOR_SIZE * 2);
foreach (FlowElement el in this.m_Elements.Reverse<FlowElement>())
{
// Check input connectors.
foreach (FlowConnector ic in el.InputConnectors)
{
if (range.Contains(ic.Center))
{
this.m_ActiveConnection = ic;
return;
}
}
// Check output connectors.
foreach (FlowConnector ic in el.OutputConnectors)
{
if (range.Contains(ic.Center))
{
this.m_ActiveConnection = ic;
return;
}
}
}
}
// Otherwise if we're clicking on a flow connector and there is an
// active connection, we probably want to make the connection.
else if (this.m_ActiveConnection != null)
{
var range = new Rectangle(
e.X - FlowConnector.CONNECTOR_SIZE / 2,
e.Y - FlowConnector.CONNECTOR_SIZE / 2,
FlowConnector.CONNECTOR_SIZE * 2,
FlowConnector.CONNECTOR_SIZE * 2);
foreach (FlowElement el in this.m_Elements.Reverse<FlowElement>())
{
// Check input connectors.
foreach (FlowConnector ic in el.InputConnectors)
{
if (range.Contains(ic.Center))
{
// The user wants to connect this up. Is it possible?
if (this.m_ActiveConnection.IsInput ||
!this.m_ActiveConnection.CanConnectTo(ic) ||
!ic.CanConnectTo(this.m_ActiveConnection))
{
// Can't connect an input to an input..
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
// Set the connection.
var old = this.m_ActiveConnection.ConnectedTo;
var newFC = new List<FlowConnector>();
foreach (FlowConnector fc in old)
if (!newFC.Contains(fc))
newFC.Add(fc);
if (!newFC.Contains(ic))
newFC.Add(ic);
this.m_ActiveConnection.ConnectedTo = newFC.ToArray();
// Finish up by turning off connection mode.
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
}
// Check output connectors.
foreach (FlowConnector ic in el.OutputConnectors)
{
if (range.Contains(ic.Center))
{
// The user wants to connect this up. Is it possible?
if (this.m_ActiveConnection.IsOutput ||
!this.m_ActiveConnection.CanConnectTo(ic) ||
!ic.CanConnectTo(this.m_ActiveConnection))
{
// Can't connect an output to an output..
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
// Set the connection.
var old = this.m_ActiveConnection.ConnectedTo;
foreach (var fc in old)
{
var newFC = new List<FlowConnector>();
foreach (var ffc in fc.ConnectedTo)
if (ffc != this.m_ActiveConnection)
newFC.Add(ffc);
fc.ConnectedTo = newFC.ToArray();
}
this.m_ActiveConnection.ConnectedTo = new[] { ic };
// Finish up by turning off connection mode.
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
}
}
}
}
// Pan on middle mouse button.
if (e.Button == System.Windows.Forms.MouseButtons.Middle ||
e.Button == System.Windows.Forms.MouseButtons.Left)
{
this.m_PanningStillHeldDown = true;
this.m_AllElementPanX = this.m_AllElementPanOldX = e.X;
this.m_AllElementPanY = this.m_AllElementPanOldY = e.Y;
}
}
public virtual bool CanConnectTo(FlowConnector connector)
{
return(true);
}
public void SetConnectorsForLayer(AlgorithmFlowConnector connector, FlowConnector[] targets, bool isInput)
{
if (isInput)
{
// We are an input connector, we must clear our layer's current
// parent and set it to the new value.
if (targets.Length != 1)
throw new InvalidOperationException("An input can not be connected to more than one output.");
if (this.m_Layer.Inputs == null)
throw new InvalidOperationException("Input array for an algorithm can not be null.");
this.m_Layer.Inputs[this.m_InputConnectors.IndexOf(connector)] =
(targets[0].Owner as AlgorithmFlowElement).m_Layer;
this.ObjectPropertyUpdated();
}
else
{
// We are an output connector, we must add ourselves as the target's
// parent. We can do this as a reverse operation on our targets.
foreach (var t in targets)
{
(t.Owner as AlgorithmFlowElement).SetConnectorsForLayer(
t as AlgorithmFlowConnector,
new[] { connector },
true);
}
}
// Invalidate the control area.
foreach (Rectangle r in this.GetConnectorRegionsToInvalidate())
this.m_Control.Invalidate(r);
}
public FlowConnector[] GetConnectorsForLayer(FlowConnector connector, bool isInput)
{
if (isInput)
return this.m_Control.Elements
.Where(v => v is AlgorithmFlowElement)
.Select(v => v as AlgorithmFlowElement)
.Where(v => this.m_Layer.Inputs == null ? false : this.m_Layer.Inputs.Contains(v.m_Layer))
.Where(v => this.ParentsIndexOf(v.m_Layer).Contains(this.m_InputConnectors.IndexOf(connector)))
.Select(v => v.m_OutputConnectors[0])
.ToArray();
IEnumerable<AlgorithmFlowElement> lfe = this.m_Control.Elements
.Where(v => v is AlgorithmFlowElement)
.Select(v => v as AlgorithmFlowElement)
.Where(v => v.m_Layer.Inputs == null ? false : v.m_Layer.Inputs.Contains(this.m_Layer));
// TODO: Probably can be moved into LINQ query above.
var fll = new List<FlowConnector>();
foreach (var el in lfe)
{
for (var i = 0; i < el.m_InputConnectors.Count; i++)
{
if (
(el.m_InputConnectors[i] as AlgorithmFlowConnector).ConnectedTo.Contains(
this.m_OutputConnectors[0]))
{
fll.Add(el.m_InputConnectors[i]);
}
}
}
return fll.ToArray();
}
public static int GetConnectorIndex(FlowElement el, FlowConnector fl)
{
if (fl.IsInput)
return el.InputConnectors.IndexOf(fl);
return el.OutputConnectors.IndexOf(fl);
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
// Don't do anything on right-click.
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
if (this.m_ActiveConnection != null)
{
this.m_ActiveConnection = null;
this.Invalidate();
}
else
{
this.SelectedElement = null;
foreach (FlowElement el in this.m_Elements.Reverse <FlowElement>())
{
if (el.Region.Contains(e.Location.Apply(1 / this.Zoom)))
{
this.SelectedElement = el;
this.m_SelectedElementStillHeldDown = true;
this.m_SelectedElementsDrag[el] = new Point(
(int)(e.X / this.Zoom) - el.X,
(int)(e.Y / this.Zoom) - el.Y);
break;
}
}
this.m_LastContextMenuOpenLocation = e.Location;
}
return;
}
// If we are currently dragging, ignore this logic.
if (this.m_SelectedElementStillHeldDown || this.m_PanningStillHeldDown)
{
return;
}
// Check to see if the mouse is over an element during left press.
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (this.m_WillMultiselect)
{
this.m_Multiselecting = true;
this.m_MultiselectStartX = e.X;
this.m_MultiselectStartY = e.Y;
this.m_MultiselectEndX = e.X;
this.m_MultiselectEndY = e.Y;
this.m_MultiselectPreviousEndX = e.X;
this.m_MultiselectPreviousEndY = e.Y;
return;
}
if (this.SelectedElements.Count <= 1)
{
this.SelectedElement = null;
}
foreach (FlowElement el in this.m_Elements.Reverse <FlowElement>())
{
if (el.Region.Contains(e.Location.Apply(1 / this.Zoom)))
{
if (this.SelectedElements.Count <= 1)
{
this.SelectedElement = el;
}
this.m_SelectedElementStillHeldDown = true;
this.m_SelectedElementsDrag[el] = new Point(
(int)(e.X / this.Zoom) - el.X,
(int)(e.Y / this.Zoom) - el.Y);
break;
}
}
if (this.SelectedElements.Count > 1)
{
foreach (FlowElement el in this.m_Elements.Reverse <FlowElement>())
{
if (this.SelectedElements.Contains(el))
{
this.m_SelectedElementsDrag[el] = new Point(
(int)(e.X / this.Zoom) - el.X,
(int)(e.Y / this.Zoom) - el.Y);
}
}
}
if (this.SelectedElements.Count > 1 && !this.m_SelectedElementStillHeldDown)
{
this.SelectedElement = null;
}
// If we didn't select an element, see if we clicked on a flow
// connector.
if (this.SelectedElement == null && this.m_ActiveConnection == null)
{
var range = new Rectangle(
e.X - FlowConnector.CONNECTOR_SIZE / 2,
e.Y - FlowConnector.CONNECTOR_SIZE / 2,
FlowConnector.CONNECTOR_SIZE * 2,
FlowConnector.CONNECTOR_SIZE * 2);
foreach (FlowElement el in this.m_Elements.Reverse <FlowElement>())
{
// Check input connectors.
foreach (FlowConnector ic in el.InputConnectors)
{
if (range.Contains(ic.Center))
{
this.m_ActiveConnection = ic;
return;
}
}
// Check output connectors.
foreach (FlowConnector ic in el.OutputConnectors)
{
if (range.Contains(ic.Center))
{
this.m_ActiveConnection = ic;
return;
}
}
}
}
// Otherwise if we're clicking on a flow connector and there is an
// active connection, we probably want to make the connection.
else if (this.m_ActiveConnection != null)
{
var range = new Rectangle(
e.X - FlowConnector.CONNECTOR_SIZE / 2,
e.Y - FlowConnector.CONNECTOR_SIZE / 2,
FlowConnector.CONNECTOR_SIZE * 2,
FlowConnector.CONNECTOR_SIZE * 2);
foreach (FlowElement el in this.m_Elements.Reverse <FlowElement>())
{
// Check input connectors.
foreach (FlowConnector ic in el.InputConnectors)
{
if (range.Contains(ic.Center))
{
// The user wants to connect this up. Is it possible?
if (this.m_ActiveConnection.IsInput ||
!this.m_ActiveConnection.CanConnectTo(ic) ||
!ic.CanConnectTo(this.m_ActiveConnection))
{
// Can't connect an input to an input..
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
// Set the connection.
var old = this.m_ActiveConnection.ConnectedTo;
var newFC = new List <FlowConnector>();
foreach (FlowConnector fc in old)
{
if (!newFC.Contains(fc))
{
newFC.Add(fc);
}
}
if (!newFC.Contains(ic))
{
newFC.Add(ic);
}
this.m_ActiveConnection.ConnectedTo = newFC.ToArray();
// Finish up by turning off connection mode.
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
}
// Check output connectors.
foreach (FlowConnector ic in el.OutputConnectors)
{
if (range.Contains(ic.Center))
{
// The user wants to connect this up. Is it possible?
if (this.m_ActiveConnection.IsOutput ||
!this.m_ActiveConnection.CanConnectTo(ic) ||
!ic.CanConnectTo(this.m_ActiveConnection))
{
// Can't connect an output to an output..
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
// Set the connection.
var old = this.m_ActiveConnection.ConnectedTo;
foreach (var fc in old)
{
var newFC = new List <FlowConnector>();
foreach (var ffc in fc.ConnectedTo)
{
if (ffc != this.m_ActiveConnection)
{
newFC.Add(ffc);
}
}
fc.ConnectedTo = newFC.ToArray();
}
this.m_ActiveConnection.ConnectedTo = new[] { ic };
// Finish up by turning off connection mode.
this.m_ActiveConnection = null;
this.Invalidate();
return;
}
}
}
}
}
// Pan on middle mouse button.
if (e.Button == System.Windows.Forms.MouseButtons.Middle ||
e.Button == System.Windows.Forms.MouseButtons.Left)
{
this.m_PanningStillHeldDown = true;
this.m_AllElementPanX = this.m_AllElementPanOldX = e.X;
this.m_AllElementPanY = this.m_AllElementPanOldY = e.Y;
}
}
internal static void RenderTo(FlowConnector el, RenderAttributes re)
{
re.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
re.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
// If we are input, we draw on the left hand side of the flow element.
int idx = FlowElement.GetConnectorIndex(el.Owner, el);
int sx = (int)Math.Ceiling(re.Graphics.MeasureString(el.Name, re.Font).Width);
float xx = (el.IsInput ? el.Owner.X - CONNECTOR_PADDING : el.Owner.X + el.Owner.Width + CONNECTOR_PADDING) * re.Zoom;
float yy = (el.Owner.Y + idx * (CONNECTOR_SIZE + CONNECTOR_PADDING)) * re.Zoom;
if (el.IsInput)
re.Graphics.DrawString(el.Name, re.Font, SystemBrushes.ControlText, new PointF(xx - sx + CONNECTOR_PADDING * re.Zoom, yy));
else
re.Graphics.DrawString(el.Name, re.Font, SystemBrushes.ControlText, new PointF(xx, yy));
el.InvalidationWidth = sx;
el.m_CenterZoomAdjustment = re.Zoom;
sx += CONNECTOR_PADDING;
re.Graphics.DrawRectangle(Pens.Black, xx + (el.IsInput ? -sx : sx), yy, CONNECTOR_SIZE * re.Zoom, CONNECTOR_SIZE * re.Zoom);
if (el.IsInput && el.ConnectedTo != null)
foreach (FlowConnector ct in el.ConnectedTo)
{
try
{
re.Graphics.DrawLine(Pens.Blue, el.Center.Apply(re.Zoom), ct.Center.Apply(re.Zoom));
}
catch (OverflowException)
{
}
}
}
public virtual bool CanConnectTo(FlowConnector connector)
{
return true;
}