public void DoClear()
{
_scaler = new Scaler(panel1.Size,
new Size(_scaler.ImageWidth, _scaler.ImageHeight));
using (var g = panel1.CreateGraphics())
{
g.Clear(DefaultBackColor);
}
}
public void DoShowImage(Bitmap bitmap)
{
_scaler = new Scaler(panel1, bitmap);
var width = bitmap.Width;
var height = bitmap.Height;
var panelPoint = Point.Round(_scaler.ImageToScreen(0, 0));
var panelEndPoint = Point.Round(_scaler.ImageToScreen(width, height));
var panelSize = new Size(panelEndPoint.X - panelPoint.X, panelEndPoint.Y - panelPoint.Y);
using (var g = panel1.CreateGraphics())
{
g.Clear(DefaultBackColor);
g.DrawImage(bitmap, new Rectangle(panelPoint, panelSize),
new Rectangle(0, 0, width, height), GraphicsUnit.Pixel);
}
}