public override bool ProcessCapture(ISurface surface, ICaptureDetails captureDetails) {
LOG.DebugFormat("Changing surface to grayscale!");
using (BitmapBuffer bbb = new BitmapBuffer(surface.Image as Bitmap, false)) {
bbb.Lock();
for(int y=0;y<bbb.Height; y++) {
for(int x=0;x<bbb.Width; x++) {
Color color = bbb.GetColorAt(x, y);
int luma = (int)((0.3*color.R) + (0.59*color.G) + (0.11*color.B));
color = Color.FromArgb(luma, luma, luma);
bbb.SetColorAt(x, y, color);
}
}
}
return true;
}
public static void Apply(Graphics graphics, Bitmap applyBitmap, Rectangle rect, int pixelSize)
{
if(pixelSize <= 1 || rect.Width == 0 || rect.Height == 0) {
// Nothing to do
return;
}
if(rect.Width < pixelSize) pixelSize = rect.Width;
if(rect.Height < pixelSize) pixelSize = rect.Height;
using (BitmapBuffer bbbDest = new BitmapBuffer(applyBitmap, rect)) {
bbbDest.Lock();
using(BitmapBuffer bbbSrc = new BitmapBuffer(applyBitmap, rect)) {
bbbSrc.Lock();
List<Color> colors = new List<Color>();
int halbPixelSize = pixelSize/2;
for(int y=-halbPixelSize;y<bbbSrc.Height+halbPixelSize; y=y+pixelSize) {
for(int x=-halbPixelSize;x<=bbbSrc.Width+halbPixelSize; x=x+pixelSize) {
colors.Clear();
for(int yy=y;yy<y+pixelSize;yy++) {
if (yy >=0 && yy < bbbSrc.Height) {
for(int xx=x;xx<x+pixelSize;xx++) {
colors.Add(bbbSrc.GetColorAt(xx,yy));
}
}
}
Color currentAvgColor = Colors.Mix(colors);
for(int yy=y;yy<=y+pixelSize;yy++) {
if (yy >=0 && yy < bbbSrc.Height) {
for(int xx=x;xx<=x+pixelSize;xx++) {
bbbDest.SetColorAt(xx, yy, currentAvgColor);
}
}
}
}
}
}
bbbDest.DrawTo(graphics, rect.Location);
}
}
/// <summary>
/// Return negative of Bitmap
/// </summary>
/// <param name="sourceBitmap">Bitmap to create a negative off</param>
/// <returns>Negative bitmap</returns>
public static Bitmap CreateNegative(Bitmap sourceBitmap)
{
using (BitmapBuffer bb = new BitmapBuffer(sourceBitmap, true)) {
bb.Lock();
for (int y = 0; y < bb.Height; y++) {
for (int x = 0; x < bb.Width; x++) {
Color color = bb.GetColorAt(x, y);
Color invertedColor = Color.FromArgb(color.A, color.R ^ 255, color.G ^ 255, color.B ^ 255);
bb.SetColorAt(x, y, invertedColor);
}
}
bb.Unlock();
return bb.Bitmap;
}
}
void DrawImageForPrint(object sender, PrintPageEventArgs e)
{
PrintOptionsDialog pod = printOptionsDialog;
ContentAlignment alignment = pod.AllowPrintCenter ? ContentAlignment.MiddleCenter : ContentAlignment.TopLeft;
if (conf.OutputPrintInverted) {
// Invert Bitmap
BitmapBuffer bb = new BitmapBuffer((Bitmap)image, false);
bb.Lock();
for(int y=0;y<bb.Height; y++) {
for(int x=0;x<bb.Width; x++) {
Color color = bb.GetColorAt(x, y);
Color invertedColor = Color.FromArgb(color.A, color.R ^ 255, color.G ^ 255, color.B ^ 255);
bb.SetColorAt(x, y, invertedColor);
}
}
bb.Dispose();
}
RectangleF pageRect = e.PageSettings.PrintableArea;
GraphicsUnit gu = GraphicsUnit.Pixel;
RectangleF imageRect = image.GetBounds(ref gu);
// rotate the image if it fits the page better
if(pod.AllowPrintRotate) {
if((pageRect.Width > pageRect.Height && imageRect.Width < imageRect.Height) ||
(pageRect.Width < pageRect.Height && imageRect.Width > imageRect.Height)) {
image.RotateFlip(RotateFlipType.Rotate90FlipNone);
imageRect = image.GetBounds(ref gu);
if(alignment.Equals(ContentAlignment.TopLeft)) alignment = ContentAlignment.TopRight;
}
}
RectangleF printRect = new RectangleF(0,0,imageRect.Width, imageRect.Height);;
// scale the image to fit the page better
if(pod.AllowPrintEnlarge || pod.AllowPrintShrink) {
SizeF resizedRect = ScaleHelper.GetScaledSize(imageRect.Size,pageRect.Size,false);
if((pod.AllowPrintShrink && resizedRect.Width < printRect.Width) ||
pod.AllowPrintEnlarge && resizedRect.Width > printRect.Width) {
printRect.Size = resizedRect;
}
}
// prepare timestamp
float dateStringWidth = 0;
float dateStringHeight = 0;
if (conf.OutputPrintTimestamp) {
Font f = new Font(FontFamily.GenericSansSerif, 10, FontStyle.Regular);
string dateString = DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToLongTimeString();
dateStringWidth = e.Graphics.MeasureString(dateString, f).Width;
dateStringHeight = e.Graphics.MeasureString(dateString, f).Height;
e.Graphics.DrawString(dateString, f, Brushes.Black, pageRect.Width / 2 - (dateStringWidth / 2), pageRect.Height - dateStringHeight);
}
// align the image
printRect = ScaleHelper.GetAlignedRectangle(printRect, new RectangleF(0, 0, pageRect.Width, pageRect.Height - dateStringHeight * 2), alignment);
e.Graphics.DrawImage(image,printRect,imageRect,GraphicsUnit.Pixel);
}
