private void Draw()
{
int typeNumber;
if (_text.Length < 26)
typeNumber = 2;
else if (_text.Length < 72)
typeNumber = 5;
else if (_text.Length < 125)
typeNumber = 7;
else if (_text.Length < 203)
typeNumber = 10;
else if (_text.Length < 298)
typeNumber = 12;
else if (_text.Length < 407)
typeNumber = 15;
else if (_text.Length < 534)
typeNumber = 17;
else if (_text.Length < 669)
typeNumber = 20;
else
{
Close();
return;
}
QRCode qr;
try
{
qr = new QRCode(typeNumber, QRErrorCorrectLevel.M);
qr.AddData(_text);
qr.Make();
}
catch (Exception)
{
Close();
return;
}
var c = qr.GetModuleCount();
var b = new Bitmap(c, c);
for (var row = 0; row < c; row++)
{
for (var col = 0; col < c; col++)
{
var isDark = qr.IsDark(row, col);
b.SetPixel(row, col, isDark ? _darkColour : _backColour);
}
}
var newImage = new Bitmap(_size, _size, PixelFormat.Format24bppRgb);
var g = Graphics.FromImage(newImage);
g.InterpolationMode = InterpolationMode.NearestNeighbor;
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.None;
if (_border)
{
g.DrawImage(b, _borderWidth, _borderWidth, _size - _borderWidth * 2, _size - _borderWidth * 2);
RectangleF[] r = {new RectangleF(0, 0, _size, _borderWidth), // Top
new RectangleF(0, 0, _borderWidth, _size), // Left
new RectangleF(_size - _borderWidth, 0, _borderWidth, _size), // Right
new RectangleF(0, _size - _borderWidth, _size, _borderWidth)}; // Bottom
g.DrawRectangles(new Pen(_borderColour, _borderWidth), r);
}
else
g.DrawImage(b, 0, 0, _size, _size);
panel1.BackgroundImage = newImage;
}