private void d2dControl_DrawingD2d(object sender, EventArgs e)
{
// if we're dragging, or could drag and no one else is dragging...
if (Dragging() ||
(DragPossible() && !AdaptedControl.Capture))
{
var d2dControl = this.AdaptedControl as D2dAdaptableControl;
D2dGraphics gfx = d2dControl.D2dGraphics;
Rectangle frameRect = GetItemBounds();
if (!frameRect.IsEmpty)
{
Matrix transform = m_transformAdapter.Transform;
frameRect = GdiUtil.Transform(transform, frameRect);
frameRect.Inflate(-HandleSize, -HandleSize);
gfx.Transform = Matrix3x2F.Identity;
gfx.FillRectangle(GetHandleRect(frameRect, Direction.TopLeft), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.Top), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.TopRight), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.Right), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.BottomRight), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.Bottom), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.BottomLeft), Color.Gray);
gfx.FillRectangle(GetHandleRect(frameRect, Direction.Left), Color.Gray);
gfx.Transform = transform;
}
}
}
/// <summary>
/// Draws the scale manipulator and calculates the bounding rectangles on the left and right
/// handles</summary>
/// <param name="g">The graphics object to draw with</param>
/// <param name="leftHandle">The left handle's bounding rectangle for pick tests, in view
/// coordinates</param>
/// <param name="rightHandle">The right handle's bounding rectangle for pick tests, in view
/// coordinates</param>
protected virtual void DrawManipulator(D2dGraphics g, out RectangleF leftHandle, out RectangleF rightHandle)
{
const float penWidth = 3;
Matrix worldToView = Owner.Transform;
float viewMin = GdiUtil.Transform(worldToView, WorldMin);
float viewMax = GdiUtil.Transform(worldToView, WorldMax);
leftHandle = new RectangleF(viewMin - penWidth * 0.5f, 0.0f, penWidth, HandleHeight);
rightHandle = new RectangleF(viewMax - penWidth * 0.5f, 0.0f, penWidth, HandleHeight);
if (IsScaling &&
ScaleHelper.Mode == ScaleMode.TimePeriod)
{
// Draw lines in red at current ghost position.
viewMin = GdiUtil.Transform(worldToView, ScaleHelper.WorldGhostMin);
viewMax = GdiUtil.Transform(worldToView, ScaleHelper.WorldGhostMax);
g.DrawLine(viewMin, 0.0f, viewMax, 0.0f, Color.Red, penWidth, null);
g.DrawLine(viewMin, 0.0f, viewMin, HandleHeight, Color.Red, penWidth, null);
g.DrawLine(viewMax, 0.0f, viewMax, HandleHeight, Color.Red, penWidth, null);
}
else
{
// Draw using original positions and the usual color.
g.DrawLine(viewMin, 0.0f, viewMax, 0.0f, Color, penWidth, null);
g.DrawLine(viewMin, 0.0f, viewMin, HandleHeight, Color, penWidth, null);
g.DrawLine(viewMax, 0.0f, viewMax, HandleHeight, Color, penWidth, null);
}
}
/// <summary>
/// Gets the bounding rect of an edge, in graph space (world space)</summary>
/// <param name="edge">Edge</param>
/// <param name="g">D2dGraphics object</param>
/// <returns>Rectangle completely bounding the node in graph space</returns>
public virtual RectangleF GetBounds(TEdge edge, D2dGraphics g)
{
RectangleF bounds = GetBounds(edge.FromNode, g);
bounds = RectangleF.Union(bounds, GetBounds(edge.ToNode, g));
return(bounds);
}
/// <summary>
/// Draws grid lines corresponding to a vertical scale</summary>
/// <param name="g">The Direct2D graphics object</param>
/// <param name="transform">Graph (world) to window's client (screen) transform</param>
/// <param name="graphRect">Graph rectangle</param>
/// <param name="majorSpacing">Scale's major spacing</param>
/// <param name="lineBrush">Grid line brush</param>
public static void DrawVerticalScaleGrid(
this D2dGraphics g,
Matrix transform,
RectangleF graphRect,
int majorSpacing,
D2dBrush lineBrush)
{
double xScale = transform.Elements[0];
RectangleF clientRect = Transform(transform, graphRect);
double min = Math.Min(graphRect.Left, graphRect.Right);
double max = Math.Max(graphRect.Left, graphRect.Right);
double tickAnchor = CalculateTickAnchor(min, max);
double step = CalculateStep(min, max, Math.Abs(clientRect.Right - clientRect.Left), majorSpacing, 0.0);
if (step > 0)
{
double offset = tickAnchor - min;
offset = offset - MathUtil.Remainder(offset, step) + step;
for (double x = tickAnchor - offset; x <= max; x += step)
{
double cx = (x - graphRect.Left) * xScale + clientRect.Left;
g.DrawLine((float)cx, clientRect.Top, (float)cx, clientRect.Bottom, lineBrush);
}
}
}
private void control_DrawingD2d(object sender, EventArgs e)
{
if (Selector.IsSelecting)
{
var d2dControl = (D2dAdaptableControl)sender;
D2dGraphics g = d2dControl.D2dGraphics;
// Replace transform and anti-aliasing setting.
Matrix3x2F xform = d2dControl.D2dGraphics.Transform;
d2dControl.D2dGraphics.Transform = Matrix3x2F.Identity;
D2dAntialiasMode oldAA = d2dControl.D2dGraphics.AntialiasMode;
d2dControl.D2dGraphics.AntialiasMode = D2dAntialiasMode.Aliased;
// Draw the selection rectangle.
Rectangle rect = MakeSelectionRect(
ClientToCanvas(Selector.CurrentPoint), ClientToCanvas(Selector.FirstPoint));
rect.Intersect(AdaptedControl.ClientRectangle);
var rectF = new RectangleF(rect.X, rect.Y, rect.Width, rect.Height);
g.DrawRectangle(rectF, SelectionBorderColor, 1.0f, null);
g.FillRectangle(rectF, SelectionFillColor);
// Restore D2dGraphics settings.
d2dControl.D2dGraphics.Transform = xform;
d2dControl.D2dGraphics.AntialiasMode = oldAA;
}
}
/// <summary>
/// DrawingD2d event handler</summary>
/// <param name="sender">Adaptable control</param>
/// <param name="e">Event args</param>
protected virtual void control_Paint(object sender, EventArgs e)
{
if (!m_isConnecting)
{
return;
}
var d2dControl = this.AdaptedControl as D2dAdaptableControl;
D2dGraphics gfx = d2dControl.D2dGraphics;
string label = m_draggingContext.ExistingEdge != null ? m_draggingContext.ExistingEdge.Label : null;
TNode dragFromNode = m_draggingContext.ActualFromNode();
TEdgeRoute dragFromRoute = m_draggingContext.ActualFromRoute(dragFromNode);
TNode dragToNode = m_draggingContext.ActualToNode();
TEdgeRoute dragToRoute = m_draggingContext.ActualToRoute(dragToNode);
Debug.Assert(dragFromRoute != null || dragToRoute != null);
PointF start = dragFromRoute == null ? m_edgeDragPoint : m_draggingContext.FromRoutePos;
PointF end = dragToRoute == null ? m_edgeDragPoint : m_draggingContext.ToRoutePos;
m_renderer.DrawPartialEdge(dragFromNode, dragFromRoute, dragToNode, dragToRoute, label,
start, end, gfx);
}
private Rectangle GetLabelBounds(TEdge edge, D2dGraphics g)
{
Vec2F startPoint = new Vec2F();
Vec2F endPoint = new Vec2F();
CircleF c = new CircleF();
bool moreThan180 = false;
Vec2F textPoint;
if (GetEdgeGeometry(edge, edge.FromRoute.Index, ref startPoint, ref endPoint, ref c, ref moreThan180))
{
textPoint = (endPoint + startPoint) * 0.5f;
}
else
{
textPoint = (endPoint + startPoint) * 0.5f;
CircleF.Project(textPoint, c, ref textPoint);
if (moreThan180)
{
textPoint -= 2 * (textPoint - c.Center);
}
}
float height = m_theme.TextFormat.FontHeight;
float width = 32;
if (!string.IsNullOrEmpty(edge.Label))
{
SizeF size = g.MeasureText(edge.Label, m_theme.TextFormat);
width = size.Width;
height = size.Height;
}
return(new Rectangle((int)(textPoint.X - width * 0.5f), (int)textPoint.Y, (int)width, (int)height));
}
/// <summary>
/// Draws the snap-to indicator to give the user a visual cue that snapping is occurring</summary>
/// <param name="sender">The TimelineControl whose Paint event is being raised</param>
/// <param name="e">The paint event args</param>
/// <remarks>Draws a vertical line at the snapping location</remarks>
private void owner_DrawingD2d(object sender, EventArgs e)
{
if (m_snapInfo.Count == 0)
{
return;
}
D2dGraphics g = m_owner.D2dGraphics;
Rectangle clipRectangle = m_owner.VisibleClientRectangle;
try
{
g.PushAxisAlignedClip(clipRectangle);
Matrix worldToView = m_owner.Transform;
foreach (SnapOffsetInfo info in m_snapInfo)
{
float viewXCoord = GdiUtil.Transform(worldToView, info.SnapToPoint);
g.DrawLine(viewXCoord, clipRectangle.Top, viewXCoord, clipRectangle.Bottom, s_color, 3.0f, null);
}
}
finally
{
g.PopAxisAlignedClip();
}
}
internal D2dBitmap(D2dGraphics owner, SharpDX.Direct2D1.Bitmap bmp)
{
m_nativeBitmap = bmp;
m_owner = owner;
m_bitmap = null;
m_owner.RecreateResources += RecreateResources;
m_rtNumber = owner.RenderTargetNumber;
}
/// <summary>
/// Draws a partially defined graph edge</summary>
/// <param name="fromNode">Source node or null</param>
/// <param name="fromRoute">Source route or null</param>
/// <param name="toNode">Destination node or null</param>
/// <param name="toRoute">Destination route or null</param>
/// <param name="label">Edge label</param>
/// <param name="endPoint">Endpoint to substitute for source or destination (in client coords), if either is null</param>
/// <param name="g">D2dGraphics object</param>
public abstract void Draw(
TNode fromNode,
TEdgeRoute fromRoute,
TNode toNode,
TEdgeRoute toRoute,
string label,
Point endPoint,
D2dGraphics g);
/// <summary>
/// Called to prepare the Direct2D graphics device for drawing, including clearing the back buffer
/// render target and initializing the Transform property of the D2dGraphics instance.</summary>
protected virtual void OnBeginDrawD2d()
{
D2dGraphics.BeginDraw();
ITransformAdapter xform = this.As <ITransformAdapter>();
D2dGraphics.Transform = xform == null ? Matrix3x2F.Identity : xform.Transform;
D2dGraphics.Clear(BackColor);
D2dGraphics.AntialiasMode = D2dAntialiasMode.Aliased;
}
internal D2dBitmapBrush(D2dGraphics owner, D2dBitmap bitmap)
: base(owner)
{
m_bitmap = bitmap;
m_extendModeX = D2dExtendMode.Clamp;
m_extendModeY = D2dExtendMode.Clamp;
m_location = new PointF(1, 1);
m_interpolationMode = D2dBitmapInterpolationMode.Linear;
Create();//to-do: it's dangerous to call a virtual method in a constructor; derived class may not be properly initialized!
}
/// <summary>
/// Draws a partially defined graph edge</summary>
/// <param name="fromNode">Source node or null</param>
/// <param name="fromRoute">Source route or null</param>
/// <param name="toNode">Destination node or null</param>
/// <param name="toRoute">Destination route or null</param>
/// <param name="label">Edge label</param>
/// <param name="startPoint">Startpoint for source</param>
/// <param name="endPoint">Endpoint for source</param>
/// <param name="g">D2dGraphics object</param>
public virtual void DrawPartialEdge(
TNode fromNode,
TEdgeRoute fromRoute,
TNode toNode,
TEdgeRoute toRoute,
string label,
PointF startPoint,
PointF endPoint,
D2dGraphics g)
{
}
/// <summary>
/// Draws a partially defined graph edge</summary>
/// <param name="fromNode">Source node, or null</param>
/// <param name="fromRoute">Source route, or null</param>
/// <param name="toNode">Destination node, or null</param>
/// <param name="toRoute">Destination route, or null</param>
/// <param name="label">Edge label</param>
/// <param name="endPoint">Endpoint to substitute for source or destination, if either is null</param>
/// <param name="g">Graphics object</param>
public override void Draw(
TNode fromNode,
BoundaryRoute fromRoute,
TNode toNode,
BoundaryRoute toRoute,
string label,
Point endPoint,
D2dGraphics g)
{
// put endpoint into statechart space
var inverse = g.Transform;
inverse.Invert();
PointF end = Matrix3x2F.TransformPoint(inverse, endPoint);
PointF p1;
PointF normal1;
if (fromNode != null)
{
p1 = ParameterToPoint(fromNode.Bounds, fromRoute.Position, out normal1);
}
else
{
p1 = end;
normal1 = new Point();
}
PointF p4;
PointF normal2;
if (toNode != null)
{
p4 = ParameterToPoint(toNode.Bounds, toRoute.Position, out normal2);
}
else
{
p4 = end;
normal2 = new Point();
}
PointF p2, p3;
float d = GetTransitionPoints(p1, normal1, p4, normal2, out p2, out p3);
DrawEdgeSpline(p1, p2, p3, p4, d, m_theme.OutlineBrush, g);
if (!string.IsNullOrEmpty(label))
{
BezierCurve2F curve = new BezierCurve2F(p1, p2, p3, p4);
Vec2F midpoint = curve.Evaluate(0.5f);
g.DrawText(label, m_centerText, new PointF(midpoint.X, midpoint.Y), m_theme.TextBrush);
}
}
/// <summary>
/// Draws a graph in a print friendly way</summary>
/// <param name="graph">Graph to render</param>
/// <param name="g">D2dGraphics device</param>
public void Print(IGraph <TNode, TEdge, TEdgeRoute> graph, D2dGraphics g)
{
try
{
IsPrinting = true;
Draw(graph, null, g);
}
finally
{
IsPrinting = false;
}
}
/// <summary>
/// Draws a partially defined graph edge</summary>
/// <param name="fromNode">Source node or null</param>
/// <param name="fromRoute">Source route or null</param>
/// <param name="toNode">Destination node or null</param>
/// <param name="toRoute">Destination route or null</param>
/// <param name="label">Edge label</param>
/// <param name="startPoint">Start point, in client coordinates</param>
/// <param name="endPoint">End point, in client coordinates</param>
/// <param name="g">D2dGraphics object</param>
public virtual void DrawPartialEdge(
TNode fromNode,
TEdgeRoute fromRoute,
TNode toNode,
TEdgeRoute toRoute,
string label,
PointF startPoint,
PointF endPoint,
D2dGraphics g)
{
// By default, use our existing abstract implementation to draw a partial edge.
Draw(fromNode, fromRoute, toNode, toRoute, label, new Point((int)endPoint.X, (int)endPoint.Y), g);
}
internal D2dBitmap(D2dGraphics owner, System.Drawing.Bitmap bmp)
{
if (bmp.PixelFormat != GdiPixelFormat.Format32bppPArgb)
{
throw new System.ArgumentException("pixel format must be GdiPixelFormat.Format32bppPArgb");
}
m_owner = owner;
m_bitmap = bmp;
Create();
m_owner.RecreateResources += RecreateResources;
m_rtNumber = owner.RenderTargetNumber;
}
private void Draw(TNode node, D2dGraphics g)
{
RectangleF boundRect = node.Bounds;
D2dEllipse bounds = (D2dEllipse)boundRect;
D2dLinearGradientBrush brush
= m_theme.FillGradientBrush;
brush.StartPoint = boundRect.Location;
brush.EndPoint = new PointF(boundRect.Right, boundRect.Bottom);
g.FillEllipse(bounds, brush);
g.DrawEllipse(bounds, m_theme.OutlineBrush);
g.DrawText(node.TitleText, m_theme.TextFormat, boundRect, m_theme.TextBrush);
}
/// <summary>
/// Draws a graph node</summary>
/// <param name="element">Element to draw</param>
/// <param name="style">Diagram drawing style</param>
/// <param name="g">Graphics object</param>
public override void Draw(ScriptNode element, DiagramDrawingStyle style, D2dGraphics g)
{
// Use the "disabled" theme when drawing disabled circuit elements.
if (!((ScriptNodeElementInfo)element.ElementInfo).Enabled)
{
D2dDiagramTheme defaultTheme = Theme;
Theme = m_disabledTheme;
base.Draw(element, style, g);
Theme = defaultTheme;
return;
}
base.Draw(element, style, g);
}
private void DrawArrow(D2dGraphics g, D2dBrush brush, PointF p, float dx, float dy)
{
const float cos = 0.866f;
const float sin = 0.500f;
PointF end1 = new PointF(
(float)(p.X + (dx * cos + dy * -sin)),
(float)(p.Y + (dx * sin + dy * cos)));
PointF end2 = new PointF(
(float)(p.X + (dx * cos + dy * sin)),
(float)(p.Y + (dx * -sin + dy * cos)));
g.DrawLine(p, end1, brush, m_theme.StrokeWidth);
g.DrawLine(p, end2, brush, m_theme.StrokeWidth);
}
private void DrawGhost(TNode state, D2dGraphics g)
{
RectangleF bounds = state.Bounds;
if (state.Type != StateType.Normal)
{
g.FillEllipse((D2dEllipse)bounds, m_theme.GhostBrush);
}
else
{
m_stateRect.Rect = bounds;
g.FillRoundedRectangle(m_stateRect, m_theme.GhostBrush);
}
}
/// <summary>
/// Initializes class with graphics object</summary>
/// <param name="graphics">Graphics object for drawing</param>
public override void Init(D2dGraphics graphics)
{
base.Init(graphics);
SelectedBrush = graphics.CreateSolidBrush(Color.Tomato);//should have width of 3
CollapsedBrush = graphics.CreateSolidBrush(Color.LightGray);
InvalidBrush = graphics.CreateSolidBrush(Color.DimGray);
GroupBrush = graphics.CreateLinearGradientBrush(
new D2dGradientStop(Color.LightGoldenrodYellow, 0),
new D2dGradientStop(Color.Khaki, 1));
GhostGroupBrush = graphics.CreateSolidBrush(Color.FromArgb(128, Color.Gray));
TrackBrush = graphics.CreateSolidBrush(Color.LightGray);
GhostTrackBrush = graphics.CreateSolidBrush(Color.FromArgb(128, Color.Gray));
TextBrush = graphics.CreateSolidBrush(SystemColors.WindowText);
}
internal D2dRadialGradientBrush(D2dGraphics owner, PointF center,
PointF gradientOriginOffset,
float radiusX,
float radiusY,
params D2dGradientStop[] gradientStops)
: base(owner)
{
m_center = center;
m_gradientOriginOffset = gradientOriginOffset;
m_radiusX = radiusX;
m_radiusY = radiusY;
m_gradientStops = new D2dGradientStop[gradientStops.Length];
Array.Copy(gradientStops, m_gradientStops, m_gradientStops.Length);
Create();//to-do: it's dangerous to call a virtual method in a constructor; derived class may not be properly initialized!
}
/// <summary>
/// Draws an icon that indicates a linked (referenced) item</summary>
/// <param name="g">The Direct2D graphics object</param>
/// <param name="x">X coordinate of icon top left corner</param>
/// <param name="y">Y coordinate of icon top left corner</param>
/// <param name="size">Size of expander, in pixels</param>
/// <param name="brush">Brush</param>
public static void DrawLink(this D2dGraphics g, float x, float y, float size, D2dBrush brush)
{
var path = new EdgeStyleData[5];
var pathData = new PointF[16];
for (int i = 0; i < 16; ++i)
{
pathData[i] = new PointF(s_unitCurvedArrowData[i].X * size + x, s_unitCurvedArrowData[i].Y * size + y);
}
var edgeData = new EdgeStyleData
{
ShapeType = EdgeStyleData.EdgeShape.Line,
EdgeData = new PointF[] { pathData[0], pathData[1], pathData[2], pathData[3] }
};
path[0] = edgeData;
edgeData = new EdgeStyleData
{
ShapeType = EdgeStyleData.EdgeShape.Bezier,
EdgeData = new BezierCurve2F(pathData[3], pathData[4], pathData[5], pathData[6])
};
path[1] = edgeData;
edgeData = new EdgeStyleData
{
ShapeType = EdgeStyleData.EdgeShape.Bezier,
EdgeData = new BezierCurve2F(pathData[6], pathData[7], pathData[8], pathData[9])
};
path[2] = edgeData;
edgeData = new EdgeStyleData
{
ShapeType = EdgeStyleData.EdgeShape.Bezier,
EdgeData = new BezierCurve2F(pathData[9], pathData[10], pathData[11], pathData[12])
};
path[3] = edgeData;
edgeData = new EdgeStyleData
{
ShapeType = EdgeStyleData.EdgeShape.Bezier,
EdgeData = new BezierCurve2F(pathData[12], pathData[13], pathData[14], pathData[15])
};
path[4] = edgeData;
g.FillPath(path, brush);
}
internal D2dLinearGradientBrush(D2dGraphics owner, PointF pt1,
PointF pt2,
D2dGradientStop[] gradientStops,
D2dExtendMode extendMode,
D2dGamma gamma)
: base(owner)
{
m_start = pt1;
m_end = pt2;
m_gradientStops = new D2dGradientStop[gradientStops.Length];
Array.Copy(gradientStops, m_gradientStops, m_gradientStops.Length);
m_gamma = gamma;
m_extendMode = extendMode;
Create();//to-do: it's dangerous to call a virtual method in a constructor; derived class may not be properly initialized!
}
/// <summary>
/// Draws a tree-control style expander, which looks like a square with
/// a dash (expanded) or a cross (unexpanded)</summary>
/// <param name="g">The Direct2D graphics object</param>
/// <param name="x">X coordinate of expander top left corner</param>
/// <param name="y">Y coordinate of expander top left corner</param>
/// <param name="size">Size of expander, in pixels</param>
/// <param name="brush">Brush</param>
/// <param name="expanded">Whether or not expander should appear "expanded"</param>
public static void DrawExpander(this D2dGraphics g, float x, float y, float size, D2dBrush brush, bool expanded)
{
s_expanderPoints[0] = new PointF(x, y + size);
if (expanded)
{
s_expanderPoints[1] = new PointF(x + size, y + size);
s_expanderPoints[2] = new PointF(x + size, y);
g.FillPolygon(s_expanderPoints, brush);
}
else
{
s_expanderPoints[1] = new PointF(x + size, y + size / 2);
s_expanderPoints[2] = new PointF(x, y);
g.DrawPolygon(s_expanderPoints, brush, 1.0f);
}
}
internal D2dBitmap(D2dGraphics owner, int width, int height)
{
if (width < 1 || height < 1)
{
throw new ArgumentOutOfRangeException("Width and height must be greater than zero");
}
m_owner = owner;
var props = new SharpDX.Direct2D1.BitmapProperties();
props.DpiX = m_owner.DotsPerInch.Width;
props.DpiY = m_owner.DotsPerInch.Height;
props.PixelFormat = new SharpDX.Direct2D1.PixelFormat(SharpDX.DXGI.Format.B8G8R8A8_UNorm, SharpDX.Direct2D1.AlphaMode.Premultiplied);
m_nativeBitmap = new SharpDX.Direct2D1.Bitmap(m_owner.D2dRenderTarget, new Size2(width, height), props);
m_owner.RecreateResources += RecreateResources;
m_rtNumber = owner.RenderTargetNumber;
}
private void owner_DrawingD2d(object sender, EventArgs e)
{
// Tighten clipping region. The TimelineRenderer assumes that it has to shrink the current
// Graphics.Clip region by the header width.
D2dGraphics g = Owner.D2dGraphics;
Rectangle clipRectangle = Owner.VisibleClientRectangle;
try
{
g.PushAxisAlignedClip(clipRectangle);
DrawManipulator(g, out m_handleRect);
}
finally
{
g.PopAxisAlignedClip();
}
}
private void owner_DrawingD2d(object sender, EventArgs e)
{
// Test if anything is visible.
m_visibleManipulator =
D2dTimelineControl.CalculateRange(Owner.EditableSelection, out m_worldMin, out m_worldMax);
if (!m_visibleManipulator)
{
return;
}
D2dGraphics g = Owner.D2dGraphics;
Matrix worldToView = Owner.Transform;
// Make the TimelineRenderer draw the ghosts, if necessary. Must happen before
// the manipulator is drawn so that snap-to info is created.
if (IsScaling)
{
TimelineLayout layout = Owner.GetLayout();
GhostInfo[] ghosts = m_resizer.CreateGhostInfo(
layout,
Owner.GetDragOffset().X,
worldToView);
Owner.Renderer.DrawGhosts(
ghosts,
DraggedSide,
worldToView,
Owner.ClientRectangle);
}
// Tighten clipping region. Has to occur after DrawGhosts because the TimelineRenderer
// assumes that it has to shrink the current Graphics.Clip region by the header width.
try
{
g.PushAxisAlignedClip(Owner.VisibleClientRectangle);
// Draw the manipulator, giving client code a customization point.
DrawManipulator(g, out m_leftHandle, out m_rightHandle);
}
finally
{
g.PopAxisAlignedClip();
}
}
private void DrawArrow(Vec2F p, Vec2F d, D2dBrush brush, D2dGraphics g)
{
d.Normalize();
// draw arrowhead
const double cos = -0.866;
const double sin = -0.500;
PointF head = new PointF(p.X, p.Y);
PointF end1 = new PointF(
(float)(p.X + (d.X * cos + d.Y * -sin) * m_arrowSize),
(float)(p.Y + (d.X * sin + d.Y * cos) * m_arrowSize));
PointF end2 = new PointF(
(float)(p.X + (d.X * cos + d.Y * sin) * m_arrowSize),
(float)(p.Y + (d.X * -sin + d.Y * cos) * m_arrowSize));
g.DrawLine(head, end1, brush, m_theme.StrokeWidth);
g.DrawLine(head, end2, brush, m_theme.StrokeWidth);
}