/// <summary>
/// Captures a specific area from the screen.
/// </summary>
public static CaptureImage Rectangle(Rectangle bounds, CaptureSettings settings = null)
{
// Calculate the size of the output rectangle
var outputRectangle = CaptureUtilities.ScaleAccordingToSettings(bounds, settings);
Bitmap bmp;
if (outputRectangle.Width == bounds.Width || outputRectangle.Height == bounds.Height)
{
// Capture directly without any resizing
bmp = CaptureDesktopToBitmap(bounds.Width, bounds.Height, (dest, src) =>
{
Gdi32.BitBlt(dest, outputRectangle.X, outputRectangle.Y, outputRectangle.Width, outputRectangle.Height, src, bounds.X, bounds.Y, CopyPixelOperation.SourceCopy | CopyPixelOperation.CaptureBlt);
});
}
else
{
// Capture with scaling
bmp = CaptureDesktopToBitmap(outputRectangle.Width, outputRectangle.Height, (dest, src) =>
{
Gdi32.SetStretchBltMode(dest, StretchMode.STRETCH_HALFTONE);
Gdi32.StretchBlt(dest, outputRectangle.X, outputRectangle.Y, outputRectangle.Width, outputRectangle.Height, src, bounds.X, bounds.Y, bounds.Width, bounds.Height, TernaryRasterOperations.SRCCOPY | TernaryRasterOperations.CAPTUREBLT);
});
}
return(new CaptureImage(bmp, bounds, settings));
}
/// <inheritdoc />
public override void Draw(Graphics g)
{
var outputPoint = new Point();
var cursorBitmap = CaptureUtilities.CaptureCursor(ref outputPoint);
if (cursorBitmap == null)
{
outputPoint = CaptureUtilities.GetMousePosition();
}
// Fix the coordinates for multi-screen scenarios
outputPoint.X -= CaptureImage.OriginalBounds.Left;
outputPoint.Y -= CaptureImage.OriginalBounds.Top;
// Check for scaling and handle that
var scale = CaptureUtilities.GetScale(CaptureImage.OriginalBounds, CaptureImage.Settings);
if (scale != 1)
{
outputPoint.X = (outputPoint.X * scale).ToInt();
outputPoint.Y = (outputPoint.Y * scale).ToInt();
var origInterpolationMode = g.InterpolationMode;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
if (cursorBitmap != null)
{
g.DrawImage(cursorBitmap, outputPoint.X, outputPoint.Y, (cursorBitmap.Width * scale).ToInt(),
(cursorBitmap.Height * scale).ToInt());
}
else
{
g.FillEllipse(new SolidBrush(Color.Red), outputPoint.X, outputPoint.Y, 30, 30);
}
g.InterpolationMode = origInterpolationMode;
}
else
{
if (cursorBitmap != null)
{
g.DrawImage(cursorBitmap, outputPoint.X, outputPoint.Y);
}
else
{
g.FillEllipse(new SolidBrush(Color.Red), outputPoint.X, outputPoint.Y, 30, 30);
}
}
// Cleanup
if (cursorBitmap != null)
{
cursorBitmap.Dispose();
}
}
