/// <summary>
/// Save graph as
/// </summary>
/// <param name="sender">sender object</param>
/// <param name="e">Event arguments</param>
private void saveGraphToolStripMenuItem_Click(object sender, EventArgs e)
{
if (SaveGraphDialog.ShowDialog() == DialogResult.OK)
{
System.IO.FileStream fs = (System.IO.FileStream)SaveGraphDialog.OpenFile();
Bitmap bt = new Bitmap(GraphControl.Width, GraphControl.Height);
GraphControl.DrawToBitmap(bt, new Rectangle(0, 0, bt.Width, bt.Height));
bt.Save(fs, ImageFormat.Png);
fs.Dispose();
}
}
public void Paint([NotNull] IRenderContext context, [NotNull] Graphics g)
{
if (!inputMode.mouseInside || !inputMode.Enabled)
{
return;
}
if (currentSize != inputMode.Size)
{
bitmap?.Dispose();
bitmap = new Bitmap(inputMode.Size.Width, inputMode.Size.Height);
// Update GraphControl size
lensGraphControl.Width = inputMode.Size.Width;
lensGraphControl.Height = inputMode.Size.Height;
// Update clipping region
clippingPath.Reset();
clippingPath.AddEllipse(new Rectangle(new Point(), inputMode.Size));
region?.Dispose();
region = new Region(clippingPath);
currentSize = inputMode.Size;
}
// Update the GraphControl with all relevant information
var canvasControl = context.CanvasControl as GraphControl;
lensGraphControl.Center = canvasControl.LastEventLocation;
lensGraphControl.Zoom = inputMode.ZoomFactor * context.Zoom;
lensGraphControl.Projection = context.Projection;
// Draw to the bitmap
lensGraphControl.DrawToBitmap(bitmap, new Rectangle(0, 0, inputMode.Size.Width, inputMode.Size.Height));
// Draw the bitmap to the screen
var drawingLocation = context.ToViewCoordinates(canvasControl.LastEventLocation).ToFloorPoint();
var state = g.Save();
g.Transform = context.ViewTransform;
g.TranslateTransform(drawingLocation.X, drawingLocation.Y);
g.Clip = region;
g.DrawImageUnscaled(bitmap, new Point());
g.ResetClip();
g.DrawEllipse(outlinePen, new Rectangle(new Point(), inputMode.Size));
g.Restore(state);
}