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);
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));
Image img = el.Image;
if (img != null)
{
re.Graphics.DrawImage(img, ex + 1 * re.Zoom, ey + 21 * re.Zoom, eiw, eih);
}
foreach (FlowConnector fl in el.OutputConnectors)
{
FlowConnector.RenderTo(fl, re);
}
foreach (FlowConnector fl in el.InputConnectors)
{
FlowConnector.RenderTo(fl, re);
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
e.Graphics.FillRectangle(SystemBrushes.ControlDark, e.ClipRectangle);
// Render each flow element.
RenderAttributes re = new RenderAttributes
{
Graphics = e.Graphics,
Zoom = this.Zoom,
Font = new Font(SystemFonts.DefaultFont.FontFamily, SystemFonts.DefaultFont.Size * this.Zoom)
};
foreach (FlowElement el in this.m_Elements)
{
FlowElement.RenderTo(el, re, this.m_SelectedElement == el);
}
// Render the active connection line.
if (this.m_ActiveConnection != null)
{
e.Graphics.DrawLine(new Pen(Color.Red, 3),
this.m_ActiveConnection.Center,
this.m_MouseActiveConnectionLocation
);
}
}
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)
{
}
}
}
}
