void DrawCurrent(Graphics graphics)
{
graphics.Transform = gViewer.CurrentTransform();
graphics.FillRectangle(new SolidBrush(Draw.MsaglColorToDrawingColor(gViewer.Graph.Attr.BackgroundColor)),
gViewer.SrcRect);
graphics.Clip = new Region(gViewer.SrcRect);
Draw.DrawPrecalculatedLayoutObject(graphics, gViewer.DGraph);
}
void DrawAll(int w, int h, Graphics graphics)
{
//fill the whole image
graphics.FillRectangle(new SolidBrush(Draw.MsaglColorToDrawingColor(gViewer.Graph.Attr.BackgroundColor)),
new RectangleF(0, 0, w, h));
//calculate the transform
double s = ImageScale;
Graph g = gViewer.Graph;
double x = 0.5 * w - s * (g.Left + 0.5 * g.Width);
double y = 0.5 * h + s * (g.Bottom + 0.5 * g.Height);
graphics.Transform = new Matrix((float)s, 0, 0, (float)-s, (float)x, (float)y);
Draw.DrawPrecalculatedLayoutObject(graphics, gViewer.DGraph);
}
private void DrawAll(int w, int h, System.Drawing.Graphics graphics)
{
using (SolidBrush solidBrush = new SolidBrush(Draw.MsaglColorToDrawingColor(gViewer.Graph.Attr.BackgroundColor))) {
//fill the whole image
graphics.FillRectangle(solidBrush, new RectangleF(0, 0, w, h));
}
//calculate the transform
double s = ImageScale;
Microsoft.Msagl.Drawing.Graph g = gViewer.Graph;
double x = 0.5 * w - s * (g.Left + 0.5 * g.Width);
double y = 0.5 * h + s * (g.Bottom + 0.5 * g.Height);
using (graphics.Transform = new System.Drawing.Drawing2D.Matrix((float)s, 0, 0, (float)-s, (float)x, (float)y)) {
Draw.DrawPrecalculatedLayoutObject(graphics, gViewer.DGraph);
}
}
/// <summary>
/// Renders the graph inside of the rectangle
/// </summary>
/// <param name="graphics"></param>
/// <param name="rect"></param>
public void Render(System.Drawing.Graphics graphics, System.Drawing.Rectangle rect)
{
if (graphics != null)
{
if (layedOutGraph == null)
{
CalculateLayout();
}
double s = Math.Min(rect.Width / graph.Width, rect.Height / graph.Height);
double xoffset = rect.Left + 0.5 * rect.Width - s * (graph.Left + 0.5 * graph.Width);
double yoffset = rect.Top + 0.5 * rect.Height + s * (graph.Bottom + 0.5 * graph.Height);
using (SolidBrush sb = new SolidBrush(Draw.MsaglColorToDrawingColor(graph.Attr.BackgroundColor)))
graphics.FillRectangle(sb, rect);
using (System.Drawing.Drawing2D.Matrix m = new System.Drawing.Drawing2D.Matrix((float)s, 0, 0, (float)-s, (float)xoffset, (float)yoffset))
graphics.Transform = m;
Draw.DrawPrecalculatedLayoutObject(graphics, layedOutGraph);
}
}