public GraphicsHandler(NSView view)
{
this.view = view;
graphicsContext = NSGraphicsContext.FromWindow(view.Window);
graphicsContext = graphicsContext.IsFlipped ? graphicsContext : NSGraphicsContext.FromGraphicsPort(graphicsContext.GraphicsPortHandle, true);
disposeContext = true;
Control = graphicsContext.GraphicsPort;
view.PostsFrameChangedNotifications = true;
AddObserver(NSView.FrameChangedNotification, FrameDidChange, view);
// if control is in a scrollview, we need to trap when it's scrolled as well
var parent = view.Superview;
while (parent != null)
{
var scroll = parent as NSScrollView;
if (scroll != null)
{
scroll.ContentView.PostsBoundsChangedNotifications = true;
AddObserver(NSView.BoundsChangedNotification, FrameDidChange, scroll.ContentView);
}
parent = parent.Superview;
}
SetDefaults();
InitializeContext(view.IsFlipped);
}
public override CGImage AsCGImage(ref RectangleF proposedDestRect, NSGraphicsContext referenceContext, NSDictionary hints)
{
return base.AsCGImage (ref proposedDestRect, referenceContext, hints);
}
private Graphics(NSGraphicsContext context)
{
var gc = context;
if (gc.IsFlipped)
gc = NSGraphicsContext.FromGraphicsPort (gc.GraphicsPort, false);
// testing for now
// var attribs = gc.Attributes;
// attribs = NSScreen.MainScreen.DeviceDescription;
// NSValue asdf = (NSValue)attribs["NSDeviceResolution"];
// var size = asdf.SizeFValue;
// ----------------------
screenScale = 1;
nativeObject = gc;
isFlipped = gc.IsFlipped;
InitializeContext(gc.GraphicsPort);
}
public static Graphics FromContext(NSGraphicsContext context)
{
return new Graphics (context);
}
public void CreateFromImage(Bitmap image)
{
var handler = image.Handler as BitmapHandler;
SourceImage = image;
#if OSX
var rep = handler.Control.Representations().OfType<NSBitmapImageRep>().FirstOrDefault();
if (rep.BitsPerPixel != 32)
{
// CoreGraphics only supports drawing to 32bpp, create a new 32-bpp image and copy back when disposed or flushed.
DrawingImage = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppRgb);
handler = DrawingImage.Handler as BitmapHandler;
rep = handler.Control.Representations().OfType<NSBitmapImageRep>().FirstOrDefault();
}
graphicsContext = NSGraphicsContext.FromBitmap(rep);
graphicsContext = graphicsContext.IsFlipped ? graphicsContext : NSGraphicsContext.FromGraphicsPort(graphicsContext.GraphicsPortHandle, true);
disposeContext = true;
Control = graphicsContext.GraphicsPort;
PointsPerPixel = (float)(rep.PixelsWide / handler.Control.Size.Width);
#elif IOS
var cgimage = handler.Control.CGImage;
Control = new CGBitmapContext(handler.Data.MutableBytes, cgimage.Width, cgimage.Height, cgimage.BitsPerComponent, cgimage.BytesPerRow, cgimage.ColorSpace, cgimage.BitmapInfo);
PointsPerPixel = (float)(cgimage.Width / handler.Control.Size.Width);
#endif
height = image.Size.Height;
SetDefaults();
InitializeContext(true);
if (DrawingImage != null && SourceImage != null)
{
// draw source image onto context, when source is incompatible for CoreGraphics drawing.
DrawImage(SourceImage, 0, 0);
}
}
public GraphicsHandler(NSView view, NSGraphicsContext graphicsContext, float height, bool flipped)
{
DisplayView = view;
this.height = height;
this.graphicsContext = flipped != graphicsContext.IsFlipped ? graphicsContext : NSGraphicsContext.FromGraphicsPort(graphicsContext.GraphicsPortHandle, true);
Control = this.graphicsContext.GraphicsPort;
SetDefaults();
InitializeContext(!flipped);
}
public override CGImage AsCGImage(ref CGRect proposedDestRect, NSGraphicsContext context, NSDictionary hints)
{
return Rep.AsCGImage(ref proposedDestRect, context, hints);
}
public void CreateFromImage(Bitmap image)
{
var handler = image.Handler as BitmapHandler;
#if OSX
var rep = handler.Control.Representations().OfType<NSBitmapImageRep>().FirstOrDefault();
graphicsContext = NSGraphicsContext.FromBitmap(rep);
graphicsContext = graphicsContext.IsFlipped ? graphicsContext : NSGraphicsContext.FromGraphicsPort(graphicsContext.GraphicsPortHandle, true);
disposeContext = true;
Control = graphicsContext.GraphicsPort;
scale = (float)(rep.PixelsWide / handler.Control.Size.Width);
#elif IOS
var cgimage = handler.Control.CGImage;
Control = new CGBitmapContext(handler.Data.MutableBytes, cgimage.Width, cgimage.Height, cgimage.BitsPerComponent, cgimage.BytesPerRow, cgimage.ColorSpace, cgimage.BitmapInfo);
scale = cgimage.Width / handler.Control.Size.Width;
#endif
height = image.Size.Height;
SetDefaults();
InitializeContext(true);
}
