CALayer MakeBackgroundLayer(RectangleF frame)
{
if (textureColor == null)
{
texture = UIImage.FromBundle("Images/texture.png");
textureColor = UIColor.FromPatternImage(texture);
}
BeginImageContext(frame.Size);
var c = UIGraphics.GetCurrentContext();
texture.DrawAsPatternInRect(frame);
Images.MenuShadow.Draw(frame);
var result = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
var back = new CALayer()
{
Frame = frame
};
Graphics.ConfigLayerHighRes(back);
back.Contents = result.CGImage;
return(back);
}
static UIImage ImageWithImage(UIImage image, CGSize newSize)
{
var rect = new CGRect(0, 0, newSize.Width, newSize.Height);
UIGraphics.BeginImageContextWithOptions(newSize, false, 0);
image.DrawAsPatternInRect(rect);
UIImage newImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(newImage);
}
protected static UIImage CreateColoredImage (UIColor color, UIImage mask)
{
var rect = new CGRect (CGPoint.Empty, mask.Size);
UIGraphics.BeginImageContextWithOptions (mask.Size, false, mask.CurrentScale);
CGContext context = UIGraphics.GetCurrentContext ();
mask.DrawAsPatternInRect (rect);
context.SetFillColor (color.CGColor);
context.SetBlendMode (CGBlendMode.SourceAtop);
context.FillRect (rect);
UIImage result = UIGraphics.GetImageFromCurrentImageContext ();
UIGraphics.EndImageContext ();
return result;
}
public static UIImage correctlyOrientedImage(UIImage image)
{
if (image.Orientation == UIImageOrientation.Up)
{
return(image);
}
UIGraphics.BeginImageContextWithOptions(image.Size, false, image.CurrentScale);
image.DrawAsPatternInRect(new CGRect(0, 0, image.Size.Width, image.Size.Height));
UIImage normalizedImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(normalizedImage);
}
public static UIImage resizeImage(UIImage image, nfloat newWidth)
{
nfloat scale = newWidth / image.Size.Width;
nfloat newHeight = image.Size.Height * scale;
UIGraphics.BeginImageContext(new CGSize(newWidth, newHeight));
image.DrawAsPatternInRect(new CGRect(0, 0, newWidth, newHeight));
var newImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(newImage);
}
public static UIImage resized(CGSize newSize, UIImage image)
{
nfloat scale = UIScreen.MainScreen.Scale;
/*You can remove the below comment if you dont want to scale the image in retina device .Dont forget to comment UIGraphicsBeginImageContextWithOptions*/
UIGraphics.BeginImageContext(newSize);
UIGraphics.BeginImageContextWithOptions(newSize, false, scale);
image.DrawAsPatternInRect(new CGRect(0, 0, newSize.Width, newSize.Height));
UIImage newImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(newImage);
}
private UIImage CropImage(UIImage image, CGRect clipRect, int width, int height)
{
CGSize sz = new CGSize(width, height);
if (UIScreen.MainScreen.Scale == 2.0)
{
UIGraphics.BeginImageContextWithOptions(sz, true, 0);
}
else
{
UIGraphics.BeginImageContext(sz);
}
UIGraphics.RectClip(clipRect);
image.DrawAsPatternInRect(clipRect);
UIImage newImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(newImage);
}
public static CALayer MakeBackgroundLayer(UIImage image, RectangleF frame)
{
var textureColor = UIColor.FromPatternImage (image);
UIGraphics.BeginImageContext (frame.Size);
var c = UIGraphics.GetCurrentContext ();
image.DrawAsPatternInRect (frame);
//Images.MenuShadow.Draw (frame);
var result = UIGraphics.GetImageFromCurrentImageContext ();
UIGraphics.EndImageContext ();
var back = new CALayer { Frame = frame };
//TODO:
//Graphics.ConfigLayerHighRes (back);
back.Contents = result.CGImage;
return back;
}
public static UIImage GetImageWithOverlayColor(this UIImage self, UIColor color)
{
RectangleF rect = new RectangleF(0.0f, 0.0f, self.Size.Width, self.Size.Height);
UIGraphics.BeginImageContextWithOptions(self.Size, false, self.CurrentScale);
self.DrawAsPatternInRect(rect);
CGContext context = UIGraphics.GetCurrentContext();
context.SetBlendMode(CGBlendMode.SourceIn);
context.SetFillColor(color.CGColor);
context.FillRect(rect);
UIImage image = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(image);
}
public static CALayer MakeBackgroundLayer(UIImage image, CGRect frame)
{
var textureColor = UIColor.FromPatternImage(image);
UIGraphics.BeginImageContext(frame.Size);
var c = UIGraphics.GetCurrentContext();
image.DrawAsPatternInRect(frame);
//Images.MenuShadow.Draw (frame);
var result = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
var back = new CALayer {
Frame = frame
};
//TODO:
//Graphics.ConfigLayerHighRes (back);
back.Contents = result.CGImage;
return(back);
}
