public override object CreateImage (object backend)
{
var gc = (CGContextBackend)backend;
var img = new NSImage (((CGBitmapContext)gc.Context).ToImage (), gc.Size);
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep) NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
return im;
}
public static void Colourize (NSView control, Color color, Action drawAction)
{
var size = control.Frame.Size;
var image = new NSImage (size);
image.LockFocusFlipped (control.IsFlipped);
drawAction ();
image.UnlockFocus ();
var ciImage = CIImage.FromData (image.AsTiff ());
if (control.IsFlipped) {
var realSize = control.ConvertSizeToBase (size);
var affineTransform = new NSAffineTransform ();
affineTransform.Translate (0, realSize.Height);
affineTransform.Scale (1, -1);
var filter1 = CIFilter.FromName ("CIAffineTransform");
filter1.SetValueForKey (ciImage, CIInputImage);
filter1.SetValueForKey (affineTransform, CIInputTransform);
ciImage = filter1.ValueForKey (CIOutputImage) as CIImage;
}
var filter2 = CIFilter.FromName ("CIColorControls");
filter2.SetDefaults ();
filter2.SetValueForKey (ciImage, CIInputImage);
filter2.SetValueForKey (new NSNumber (0.0f), CIInputSaturation);
ciImage = filter2.ValueForKey (CIOutputImage) as CIImage;
var filter3 = CIFilter.FromName ("CIColorMatrix");
filter3.SetDefaults ();
filter3.SetValueForKey (ciImage, CIInputImage);
filter3.SetValueForKey (new CIVector (0, color.R, 0), CIInputRVector);
filter3.SetValueForKey (new CIVector (color.G, 0, 0), CIInputGVector);
filter3.SetValueForKey (new CIVector (0, 0, color.B), CIInputBVector);
ciImage = filter3.ValueForKey (CIOutputImage) as CIImage;
image = new NSImage (size);
var rep = NSCIImageRep.FromCIImage (ciImage);
image.AddRepresentation (rep);
image.Draw (SD.PointF.Empty, new SD.RectangleF (SD.PointF.Empty, size), NSCompositingOperation.SourceOver, 1);
/* Use this when implemented in maccore:
ciImage.Draw (SD.PointF.Empty, new SD.RectangleF (SD.PointF.Empty, size), NSCompositingOperation.SourceOver, 1);
*/
}
public override object RenderWidget (Widget w)
{
var view = ((ViewBackend)w.GetBackend ()).Widget;
view.LockFocus ();
var img = new NSImage (view.DataWithPdfInsideRect (view.Bounds));
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep)NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
im.Size = new System.Drawing.SizeF ((float)view.Bounds.Width, (float)view.Bounds.Height);
return im;
}
public override object ConvertToBitmap(object handle, double width, double height, double scaleFactor, ImageFormat format)
{
int pixelWidth = (int)(width * scaleFactor);
int pixelHeight = (int)(height * scaleFactor);
if (handle is CustomImage) {
var flags = CGBitmapFlags.ByteOrderDefault;
int bytesPerRow;
switch (format) {
case ImageFormat.ARGB32:
bytesPerRow = pixelWidth * 4;
flags |= CGBitmapFlags.PremultipliedFirst;
break;
case ImageFormat.RGB24:
bytesPerRow = pixelWidth * 3;
flags |= CGBitmapFlags.None;
break;
default:
throw new NotImplementedException ("ImageFormat: " + format.ToString ());
}
var bmp = new CGBitmapContext (IntPtr.Zero, pixelWidth, pixelHeight, 8, bytesPerRow, Util.DeviceRGBColorSpace, flags);
bmp.TranslateCTM (0, pixelHeight);
bmp.ScaleCTM ((float)scaleFactor, (float)-scaleFactor);
var ctx = new CGContextBackend {
Context = bmp,
Size = new SizeF ((float)width, (float)height),
InverseViewTransform = bmp.GetCTM ().Invert (),
ScaleFactor = scaleFactor
};
var ci = (CustomImage)handle;
ci.DrawInContext (ctx);
var img = new NSImage (((CGBitmapContext)bmp).ToImage (), new SizeF (pixelWidth, pixelHeight));
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep)NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
im.Size = new SizeF ((float)width, (float)height);
bmp.Dispose ();
return im;
}
else {
NSImage img = (NSImage)handle;
NSBitmapImageRep bitmap = img.Representations ().OfType<NSBitmapImageRep> ().FirstOrDefault ();
if (bitmap == null) {
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep)NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
im.Size = new SizeF ((float)width, (float)height);
return im;
}
return handle;
}
}
// Create one display list based on the given image. This assumes the image
// uses 8-bit chunks to represent a sample
bool MakeDisplayList (int listNum, NSImage theImage)
{
NSBitmapImageRep bitmap;
int bytesPerRow, pixelsHigh, pixelsWide, samplesPerPixel;
byte currentBit, byteValue;
byte[] newBuffer;
int rowIndex, colIndex;
bitmap = new NSBitmapImageRep ( theImage.AsTiff (NSTiffCompression.None, 0) );
pixelsHigh = bitmap.PixelsHigh;
pixelsWide = bitmap.PixelsWide;
bytesPerRow = bitmap.BytesPerRow;
samplesPerPixel = bitmap.SamplesPerPixel;
newBuffer = new byte[(int)Math.Ceiling ((float)bytesPerRow / 8.0) * pixelsHigh];
byte[] bitmapBytesArray = new byte[(pixelsWide * pixelsHigh) * samplesPerPixel];
System.Runtime.InteropServices.Marshal.Copy (bitmap.BitmapData, bitmapBytesArray, 0, (pixelsWide * pixelsHigh) * samplesPerPixel);
int curIdx = 0;
/*
* Convert the color bitmap into a true bitmap, ie, one bit per pixel. We
* read at last row, write to first row as Cocoa and OpenGL have opposite
* y origins
*/
for (rowIndex = pixelsHigh - 1; rowIndex >= 0; rowIndex--) {
currentBit = 0x80;
byteValue = 0;
for (colIndex = 0; colIndex < pixelsWide; colIndex++) {
if (bitmapBytesArray [rowIndex * bytesPerRow + colIndex * samplesPerPixel] > 0)
byteValue |= currentBit;
currentBit >>= 1;
if (currentBit == 0) {
newBuffer [curIdx++] = byteValue;
currentBit = 0x80;
byteValue = 0;
}
}
/*
* Fill out the last byte; extra is ignored by OpenGL, but each row
* must start on a new byte
*/
if (currentBit != 0x80)
newBuffer[curIdx++] = byteValue;
}
GL.NewList( listNum, ListMode.Compile);
GL.Bitmap(pixelsWide, pixelsHigh, 0, 0, pixelsWide, 0, newBuffer);
GL.EndList();
return true;
}
public override object ConvertToBitmap(object handle, int pixelWidth, int pixelHeight, ImageFormat format)
{
if (handle is CustomImage) {
var flags = CGBitmapFlags.ByteOrderDefault;
int bytesPerRow;
switch (format) {
case ImageFormat.ARGB32:
bytesPerRow = pixelWidth * 4;
flags |= CGBitmapFlags.PremultipliedFirst;
break;
case ImageFormat.RGB24:
bytesPerRow = pixelWidth * 3;
flags |= CGBitmapFlags.None;
break;
default:
throw new NotImplementedException ("ImageFormat: " + format.ToString ());
}
var bmp = new CGBitmapContext (IntPtr.Zero, pixelWidth, pixelHeight, 8, bytesPerRow, Util.DeviceRGBColorSpace, flags);
bmp.TranslateCTM (0, pixelHeight);
bmp.ScaleCTM (1, -1);
var ctx = new CGContextBackend {
Context = bmp,
Size = new SizeF (pixelWidth, pixelHeight),
InverseViewTransform = bmp.GetCTM ().Invert ()
};
var ci = (CustomImage)handle;
ci.DrawInContext (ctx);
var img = new NSImage (((CGBitmapContext)bmp).ToImage (), new SizeF (pixelWidth, pixelHeight));
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep) NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
return im;
}
else
return handle;
}