public NodeGraphPanel()
: base(new GraphicsMode(new ColorFormat(32), 24, 8, 8), 4, 5, GraphicsContextFlags.ForwardCompatible)
{
InitializeComponent();
this.MouseWheel += NodeGraphPanel_MouseWheel;
//this.label1.Parent = this;
this.graph = new Graph("Default");
this.view = new View(graph);
this.Dock = DockStyle.Fill;
//this.DoubleBuffered = true;
this.scroll_Margins = 32;
this.scroll_Margins_Value = 10;
this.editMode = NodeGraphEditMode.Idle;
this.mouse_position_wrld = Vector3.Zero;
this.mouse_position_ctrl = Vector3.Zero;
this.key_down_alt = false;
this.key_down_ctrl = false;
this.scroll_last = Vector3.Zero;
this.selectionBox_Origin = Vector3.Zero;
this.selectionBox_Current = Vector3.Zero;
this.link_input = null;
this.link_output = null;
this.enable_debug = true;
this.enable_shadow = true;
this.enable_smooth = false;
}
/// <summary>
/// Creates a UserControl component that displays NodeGraphViews and let interact with NodeGraphNodes & NodeGraphLinks
/// </summary>
public NodeGraphPanel()
{
InitializeComponent();
this.m_oView = new NodeGraphView(this);
this.m_oDebugFont = new Font("Tahoma", 8.0f);
this.m_ScrollMargins = 32;
this.m_ScrollMarginsValue = 10;
this.m_eEditMode = NodeGraphEditMode.Idle;
this.m_ViewSpaceCursorLocation = new Point();
this.m_bAltPressed = false;
this.m_bCtrlPressed = false;
this.m_NodeText = new SolidBrush(Color.White);
this.m_NodeTextShadow = new SolidBrush(Color.Black);
this.NodeTitleZoomThreshold = 0.5f;
this.NodeConnectorTextZoomTreshold = 0.8f;
this.NodeHeaderSize = 24;
this.NodeTextColor = Color.FromArgb(255, 255, 255, 255);
this.NodeTextShadowColor = Color.FromArgb(128, 0, 0, 0);
this.NodeFillColor = Color.FromArgb(255, 128, 128, 128);
this.NodeFillSelectedColor = Color.FromArgb(255, 160, 128, 100);
this.NodeOutlineColor = Color.FromArgb(255, 180, 180, 180);
this.NodeOutlineSelectedColor = Color.FromArgb(255, 192, 160, 128);
this.ConnectorTextColor = Color.FromArgb(255, 64, 64, 64);
this.ConnectorFillColor = Color.FromArgb(255, 0, 0, 0);
this.ConnectorFillSelectedColor = Color.FromArgb(255, 32, 32, 32);
this.ConnectorOutlineColor = Color.FromArgb(255, 32, 32, 32);
this.ConnectorOutlineSelectedColor = Color.FromArgb(255, 64, 64, 64);
this.SelectionFillColor = Color.FromArgb(64, 128, 90, 30);
this.SelectionOutlineColor = Color.FromArgb(192, 255, 180, 60);
this.NodeHeaderColor = Color.FromArgb(128, 0, 0, 0);
this.LinkColor = Color.FromArgb(255, 180, 180, 180);
this.LinkEditableColor = Color.FromArgb(255, 64, 255, 0);
this.NodeSignalValidColor = Color.FromArgb(255, 0, 255, 0);
this.NodeSignalInvalidColor = Color.FromArgb(255, 255, 0, 0);
this.m_NodeTitleFont = new Font("Tahoma", 8.0f);
this.m_NodeConnectorFont = new Font("Tahoma", 7.0f);
this.m_NodeScaledTitleFont = new Font(m_NodeTitleFont.Name, m_NodeTitleFont.Size);
this.m_NodeScaledConnectorFont = new Font(m_NodeConnectorFont.Name, m_NodeConnectorFont.Size);
this.m_LinkVisualStyle = LinkVisualStyle.Curve;
this.ConnectorHitZoneBleed = 2;
this.m_SelectBoxOrigin = new Point();
this.m_SelectBoxCurrent = new Point();
this.LinkHardness = 2.0f;
this.m_iScrollLastX = 0;
this.m_iScrollLastY = 0;
this.EnableDrawDebug = true;
this.Dock = DockStyle.Fill;
this.DoubleBuffered = true;
this.m_InputLink = null;
this.m_OutputLink = null;
this.m_bShowGrid = false;
this.m_iGridPadding = 256;
this.m_iGridAlpha = 32;
this.m_bDrawShadow = true;
this.m_bSmoothBehavior = false;
}
/// <summary>
/// Behavior when Mouse Click is released
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void NodeGraphPanel_MouseUp(object sender, MouseEventArgs e)
{
switch (this.m_eEditMode)
{
case NodeGraphEditMode.Scrolling:
if (e.Button == MouseButtons.Middle) this.m_eEditMode = NodeGraphEditMode.Idle;
break;
case NodeGraphEditMode.Selecting:
case NodeGraphEditMode.SelectingBox:
if (e.Button == MouseButtons.Left)
{
this.CreateSelection();
this.m_eEditMode = NodeGraphEditMode.Idle;
}
break;
case NodeGraphEditMode.MovingSelection:
if (e.Button == MouseButtons.Left)
{
this.m_eEditMode = NodeGraphEditMode.Idle;
}
break;
case NodeGraphEditMode.Linking:
this.m_OutputLink = GetHitConnector(e.Location);
ValidateLink();
this.m_eEditMode = NodeGraphEditMode.Idle;
break;
default:
break;
}
}
/// <summary>
/// Behavior when mouse is moved
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void NodeGraphPanel_MouseMove(object sender, MouseEventArgs e)
{
this.m_ViewSpaceCursorLocation = this.ControlToView(new Point(e.X, e.Y));
switch (this.m_eEditMode)
{
case NodeGraphEditMode.Scrolling:
this.View.ViewX += (int)((e.Location.X - m_iScrollLastX) / this.View.ViewZoom);
this.View.ViewY += (int)((e.Location.Y - m_iScrollLastY) / this.View.ViewZoom);
this.m_iScrollLastX = e.Location.X;
this.m_iScrollLastY = e.Location.Y;
this.Refresh();
break;
case NodeGraphEditMode.Selecting:
this.m_eEditMode = NodeGraphEditMode.SelectingBox;
this.m_SelectBoxCurrent = this.ControlToView(new Point(e.X, e.Y));
this.UpdateHighlights();
this.Refresh();
break;
case NodeGraphEditMode.SelectingBox:
if (this.IsInScrollArea(e.Location))
{
this.UpdateScroll(e.Location);
}
this.m_SelectBoxCurrent = this.ControlToView(new Point(e.X, e.Y));
this.UpdateHighlights();
this.Refresh();
break;
case NodeGraphEditMode.MovingSelection:
if (this.IsInScrollArea(e.Location))
{
this.UpdateScroll(e.Location);
}
Point currentCursorLoc = this.ControlToView(e.Location);
int deltaX = this.m_MoveLastPosition.X - currentCursorLoc.X;
int deltaY = this.m_MoveLastPosition.Y - currentCursorLoc.Y;
this.MoveSelection(new Point(deltaX, deltaY));
this.Refresh();
this.m_MoveLastPosition = currentCursorLoc;
break;
case NodeGraphEditMode.Linking:
if (this.IsInScrollArea(e.Location))
{
this.UpdateScroll(e.Location);
}
this.Refresh();
break;
default:
this.Refresh();
break;
}
}
/// <summary>
/// Behavior when Mouse is Clicked
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void NodeGraphPanel_MouseDown(object sender, MouseEventArgs e)
{
switch(this.m_eEditMode) {
case NodeGraphEditMode.Idle:
switch (e.Button)
{
case MouseButtons.Middle:
this.m_eEditMode = NodeGraphEditMode.Scrolling;
this.m_iScrollLastX = e.Location.X;
this.m_iScrollLastY = e.Location.Y;
break;
case MouseButtons.Left:
if (this.HitAll(e.Location) == HitType.Connector)
{
if (!m_bAltPressed)
{
this.m_eEditMode = NodeGraphEditMode.Linking;
this.m_InputLink = GetHitConnector(e.Location);
this.m_OutputLink = null;
}
else
{
NodeGraphConnector v_Connector = GetHitConnector(e.Location);
this.DeleteLinkConnectors(v_Connector);
}
} else if (this.View.SelectedItems.Count > 0 && this.HitSelected(e.Location)== HitType.Node)
{
this.m_eEditMode = NodeGraphEditMode.MovingSelection;
this.m_MoveLastPosition = this.ControlToView(e.Location);
}
else
{
this.m_eEditMode = NodeGraphEditMode.Selecting;
this.m_SelectBoxCurrent = this.ControlToView(new Point(e.X, e.Y));
this.m_SelectBoxOrigin = this.ControlToView(new Point(e.X, e.Y));
this.UpdateHighlights();
this.CreateSelection();
if (this.View.SelectedItems.Count > 0)
{
this.m_eEditMode = NodeGraphEditMode.MovingSelection;
this.m_MoveLastPosition = this.ControlToView(e.Location);
}
}
break;
default:
break;
}
break;
default: break;
}
this.Refresh();
}
