/// <inheritdoc cref="Draw(QrCode, Graphics, float, float)"/>
/// <param name="background">The background color.</param>
/// <param name="foreground">The foreground color.</param>
public static void Draw(this QrCode qrCode, Graphics graphics, float scale, float border, Color foreground, Color background)
{
if (scale <= 0 || border < 0)
{
return;
}
int size = qrCode.Size;
float dim = (size + border * 2) * scale;
// draw background
if (background != null)
{
using SolidBrush brush = new SolidBrush(background);
graphics.FillRectangle(brush, 0, 0, dim, dim);
}
// draw modules
using (SolidBrush brush = new SolidBrush(foreground))
{
for (int y = 0; y < size; y++)
{
for (int x = 0; x < size; x++)
{
if (qrCode.GetModule(x, y))
{
graphics.FillRectangle(brush, (x + border) * scale, (y + border) * scale, scale, scale);
}
}
}
}
}
/// <inheritdoc cref="ToBitmap(QrCode, int, int)"/>
/// <param name="background">The background color.</param>
/// <param name="foreground">The foreground color.</param>
public static SKBitmap ToBitmap(this QrCode qrCode, int scale, int border, SKColor foreground, SKColor background)
{
// check arguments
if (scale <= 0)
{
throw new ArgumentOutOfRangeException(nameof(scale), "Value out of range");
}
if (border < 0)
{
throw new ArgumentOutOfRangeException(nameof(border), "Value out of range");
}
int size = qrCode.Size;
int dim = (size + border * 2) * scale;
if (dim > short.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(scale), "Scale or border too large");
}
// create bitmap
SKBitmap bitmap = new SKBitmap(dim, dim, SKColorType.Rgb888x, SKAlphaType.Opaque);
using (SKCanvas canvas = new SKCanvas(bitmap))
{
// draw background
using (SKPaint paint = new SKPaint {
Color = background
})
{
canvas.DrawRect(0, 0, dim, dim, paint);
}
// draw modules
using (SKPaint paint = new SKPaint {
Color = foreground
})
{
for (int y = 0; y < size; y++)
{
for (int x = 0; x < size; x++)
{
if (qrCode.GetModule(x, y))
{
canvas.DrawRect((x + border) * scale, (y + border) * scale, scale, scale, paint);
}
}
}
}
}
return(bitmap);
}
/// <inheritdoc cref="ToBitmap(QrCode, int, int)"/>
/// <param name="background">The background color.</param>
/// <param name="foreground">The foreground color.</param>
public static Image ToBitmap(this QrCode qrCode, int scale, int border, Color foreground, Color background)
{
// check arguments
if (scale <= 0)
{
throw new ArgumentOutOfRangeException(nameof(scale), "Value out of range");
}
if (border < 0)
{
throw new ArgumentOutOfRangeException(nameof(border), "Value out of range");
}
int size = qrCode.Size;
int dim = (size + border * 2) * scale;
if (dim > short.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(scale), "Scale or border too large");
}
// create bitmap
Image <Rgb24> image = new Image <Rgb24>(dim, dim);
image.Mutate(img =>
{
// draw background
img.Fill(background);
// draw modules
for (int y = 0; y < size; y++)
{
for (int x = 0; x < size; x++)
{
if (qrCode.GetModule(x, y))
{
img.Fill(foreground, new Rectangle((x + border) * scale, (y + border) * scale, scale, scale));
}
}
}
});
return(image);
}
