void LoadBitmapData (int texId)
{
NSData texData = NSData.FromFile (NSBundle.MainBundle.PathForResource ("texture1", "png"));
UIImage image = UIImage.LoadFromData (texData);
if (image == null)
return;
int width = image.CGImage.Width;
int height = image.CGImage.Height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB ();
byte[] imageData = new byte[height * width * 4];
CGContext context = new CGBitmapContext (imageData, width, height, 8, 4 * width, colorSpace,
CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
context.TranslateCTM (0, height);
context.ScaleCTM (1, -1);
colorSpace.Dispose ();
context.ClearRect (new RectangleF (0, 0, width, height));
context.DrawImage (new RectangleF (0, 0, width, height), image.CGImage);
GL.TexImage2D (TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, imageData);
context.Dispose ();
}
public static UIImage AddImageReflection(UIImage image, float reflectionFraction)
{
int reflectionHeight = (int) (image.Size.Height * reflectionFraction);
// Create a 2 bit CGImage containing a gradient that will be used for masking the
// main view content to create the 'fade' of the reflection. The CGImageCreateWithMask
// function will stretch the bitmap image as required, so we can create a 1 pixel wide gradient
// gradient is always black and white and the mask must be in the gray colorspace
var colorSpace = CGColorSpace.CreateDeviceGray ();
// Creat the bitmap context
var gradientBitmapContext = new CGBitmapContext (IntPtr.Zero, 1, reflectionHeight, 8, 0, colorSpace, CGImageAlphaInfo.None);
// define the start and end grayscale values (with the alpha, even though
// our bitmap context doesn't support alpha the gradien requires it)
float [] colors = { 0, 1, 1, 1 };
// Create the CGGradient and then release the gray color space
var grayScaleGradient = new CGGradient (colorSpace, colors, null);
colorSpace.Dispose ();
// create the start and end points for the gradient vector (straight down)
var gradientStartPoint = new PointF (0, reflectionHeight);
var gradientEndPoint = PointF.Empty;
// draw the gradient into the gray bitmap context
gradientBitmapContext.DrawLinearGradient (grayScaleGradient, gradientStartPoint,
gradientEndPoint, CGGradientDrawingOptions.DrawsAfterEndLocation);
grayScaleGradient.Dispose ();
// Add a black fill with 50% opactiy
gradientBitmapContext.SetGrayFillColor (0, 0.5f);
gradientBitmapContext.FillRect (new RectangleF (0, 0, 1, reflectionHeight));
// conver the context into a CGImage and release the context
var gradientImageMask = gradientBitmapContext.ToImage ();
gradientBitmapContext.Dispose ();
// create an image by masking the bitmap of the mainView content with the gradient view
// then release the pre-masked content bitmap and the gradient bitmap
var reflectionImage = image.CGImage.WithMask (gradientImageMask);
gradientImageMask.Dispose ();
var size = new SizeF (image.Size.Width, image.Size.Height + reflectionHeight);
UIGraphics.BeginImageContext (size);
image.Draw (PointF.Empty);
var context = UIGraphics.GetCurrentContext ();
context.DrawImage (new RectangleF (0, image.Size.Height, image.Size.Width, reflectionHeight), reflectionImage);
var result = UIGraphics.GetImageFromCurrentImageContext ();
UIGraphics.EndImageContext ();
reflectionImage.Dispose ();
return result;
}
public IBitmapImplementation Rescale(int newWidth, int newHeight)
{
CGBitmapContext bctx = new CGBitmapContext(null, newWidth, newHeight,
cgImage.BitsPerComponent, 0, CGColorSpace.CreateDeviceRGB(), CGImageAlphaInfo.PremultipliedLast);
bctx.InterpolationQuality = CGInterpolationQuality.High;
bctx.DrawImage(new CGRect(0, 0, newWidth, newHeight), cgImage);
var img = bctx.ToImage();
bctx.Dispose();
return(new BitmapImplementation(img));
}
private Texture(String filename)
{
#if __ANDROID__
AssetManager assets = GameActivity.Instance.Assets;
Bitmap bitmap = null;
using (Stream stream = assets.Open(filename))
{
bitmap = BitmapFactory.DecodeStream(stream);
Width = bitmap.Width;
Height = bitmap.Height;
}
GL.GenTextures(1, out _GLID);
GL.BindTexture(All.Texture2D, _GLID);
GL.TexParameter(All.Texture2D, All.TextureWrapS, (Int32)All.Repeat);
GL.TexParameter(All.Texture2D, All.TextureWrapT, (Int32)All.Repeat);
GL.TexParameter(All.Texture2D, All.TextureMinFilter, (Int32)All.Linear);
GL.TexParameter(All.Texture2D, All.TextureMagFilter, (Int32)All.Linear);
GLUtils.TexImage2D((Int32)All.Texture2D, 0, bitmap, 0);
GL.GenerateMipmap(All.Texture2D);
GL.BindTexture(All.Texture2D, 0);
bitmap.Recycle();
#elif __IOS__
UIImage image = UIImage.FromFile(filename);
nint cgWidth = image.CGImage.Width;
nint cgHeight = image.CGImage.Height;
Width = (Int32)cgWidth;
Height = (Int32)cgHeight;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
Byte[] data = new Byte[Width * Height * 4];
CGContext context = new CGBitmapContext(data, cgWidth, cgHeight, 8, 4 * Width, colorSpace, CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrderDefault);
colorSpace.Dispose();
context.ClearRect(new CGRect(0, 0, cgWidth, cgHeight));
context.DrawImage(new CGRect(0, 0, cgWidth, cgHeight), image.CGImage);
GL.GenTextures(1, out _GLID);
GL.BindTexture(TextureTarget.Texture2D, _GLID);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (Int32)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (Int32)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (Int32)TextureMinFilter.LinearMipmapLinear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (Int32)TextureMagFilter.Linear);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, Width, Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, data);
context.Dispose();
GL.GenerateMipmap(TextureTarget.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, 0);
#endif
LoadedTextures.Add(filename, this);
_Filename = filename;
}
public UIImage ProcessedImage()
{
nfloat scale = UIScreen.MainScreen.Scale;
CGImage imageRef = _originalImage.CGImage;
if (imageRef == null)
{
return(null);
}
var bytesPerRow = 0;
var bitsPerComponent = imageRef.BitsPerComponent;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapInfo = imageRef.BitmapInfo;
CGBitmapContext context = new CGBitmapContext(null,
(nint)(_targetSize.Width * scale),
(nint)(_targetSize.Height * scale),
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
colorSpace.Dispose();
if (context == null)
{
imageRef.Dispose();
return(null);
}
CGRect targetFrame = LocalCropFrame();
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetBlendMode(CGBlendMode.Copy);
context.DrawImage(targetFrame, imageRef);
var contextImage = context.ToImage();
UIImage finalImage = null;
context.Dispose();
if (contextImage != null)
{
finalImage = UIImage.FromImage(contextImage, scale, UIImageOrientation.Up);
contextImage.Dispose();
}
imageRef.Dispose();
return(finalImage);
}
/// <summary>
/// Calculates the "average" color of the picture.
/// i.e. average color = average R, average G, average B
/// </summary>
/// <param name="image">CGImage to calculate the average from.</param>
/// <returns>average color</returns>
public static UIColor AverageColor(CGImage image)
{
CGImage imageRef = image;
nint width = (int)(imageRef.Width);
nint height = (int)(imageRef.Height);
nint count = width * height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
byte[] rawData = new byte[height * width * 4];
nint bytesPerPixel = 4;
nint bytesPerRow = bytesPerPixel * width;
nint bitsPerComponent = 8;
CGContext context = new CGBitmapContext(
rawData, width,
height,
bitsPerComponent,
bytesPerRow,
colorSpace,
CGBitmapFlags.ByteOrder32Big | CGBitmapFlags.PremultipliedLast
);
context.DrawImage(new CGRect(0, 0, width, height), imageRef);
context.Dispose();
nint byteIndex = 0;
float r = 0;
float g = 0;
float b = 0;
for (int i = 0; i < count; i++)
{
float red = rawData[byteIndex];
float green = rawData[byteIndex + 1];
float blue = rawData[byteIndex + 2];
byteIndex += bytesPerPixel;
r += (int)red;
g += (int)green;
b += (int)blue;
}
r = r / count / 255;
g = g / count / 255;
b = b / count / 255;
return(new UIColor(red: r, green: g, blue: b, alpha: 1));
}
public GLTexture(string inFilename)
{
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.Blend);
filename = inFilename;
GL.Hint(HintTarget.GenerateMipmapHint, HintMode.Nicest);
GL.GenTextures(1, out texture);
GL.BindTexture(TextureTarget.Texture2D, texture);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Nearest);
//TODO Remove the Substring method if you don't support iOS versions prior to iOS 6.
string extension = Path.GetExtension(filename).Substring(1);
string baseFilename = Path.GetFileNameWithoutExtension(filename);
string path = NSBundle.MainBundle.PathForResource(baseFilename, extension);
NSData texData = NSData.FromFile(path);
UIImage image = UIImage.LoadFromData(texData);
if (image == null)
{
return;
}
nint width = image.CGImage.Width;
nint height = image.CGImage.Height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
byte [] imageData = new byte[height * width * 4];
CGContext context = new CGBitmapContext(imageData, width, height, 8, 4 * width, colorSpace,
CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
context.TranslateCTM(0, height);
context.ScaleCTM(1, -1);
colorSpace.Dispose();
context.ClearRect(new CGRect(0, 0, width, height));
context.DrawImage(new CGRect(0, 0, width, height), image.CGImage);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, (int)width, (int)height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, imageData);
context.Dispose();
}
public static UIColor ColorAtPixel(CGPoint point, UIImage image)
{
CGRect rect = new CGRect(0, 0, image.Size.Width, image.Size.Height);
// CancelIf pointIs outside Image coordinates
if (!rect.Contains(point))
{
return(null);
}
// Create a 1x1 pixel byte array and bitmap context to draw the pixelInto.
// Reference: http://stackoverflow.com/questions/1042830/retrieving-a-pixel-alpha-value-for-a-uiImage
int pointX = Convert.ToInt16(Math.Truncate(point.X));
int pointY = Convert.ToInt16(Math.Truncate(point.Y));
CGImage cgimage = image.CGImage;
int width = Convert.ToInt16(image.Size.Width);
int height = Convert.ToInt16(image.Size.Height);
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
int bytesPerPixel = 4;
int bytesPerRow = bytesPerPixel * 1;
int bitsPerComponent = 8;
byte [] pixelData = { 0, 0, 0, 0 };
CGContext context = new CGBitmapContext(pixelData,
1,
1,
bitsPerComponent,
bytesPerRow,
colorSpace,
CGImageAlphaInfo.PremultipliedLast /*| CGBitmapFlags.ByteOrder32Big*/);
// colorSpace.Dispose ();
context.SetFillColorSpace(colorSpace); // CGColorSpaceRelease(colorSpace); //TODO Not Sure
context.SetBlendMode(CGBlendMode.Copy);
// Draw the pixel we areInterestedIn onto the bitmap context
context.TranslateCTM(-pointX, pointY - (nfloat)height);
context.DrawImage(new CGRect(0.0f, 0.0f, (nfloat)width, (nfloat)height), image.CGImage);
context.Dispose(); // CGContextRelease(context); //TODO Not Sure
// Convert color values [0..255] to floats [0.0..1.0]
nfloat red = (nfloat)pixelData [0] / 255.0f;
nfloat green = (nfloat)pixelData [1] / 255.0f;
nfloat blue = (nfloat)pixelData [2] / 255.0f;
nfloat alpha = (nfloat)pixelData [3] / 255.0f;
return(UIColor.FromRGBA(red, green, blue, alpha));
}
public Size GetCharData(char c, out UInt32[] cdata)
{
NSString str = new NSString(c.ToString());
var size = str.StringSize(font);
UIGraphics.BeginImageContextWithOptions(size, false, 1.0f);
UIGraphics.GetCurrentContext().SetFillColor(1.0f, 1.0f, 1.0f, 1.0f);
str.DrawString(new System.Drawing.PointF(0, 0), font);
UIImage img = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
//
int width = (int)size.Width;
int height = (int)size.Height;
cdata = new UInt32[width * height];
var gdata = new byte[width * height * 4];
var colorSpace = CGColorSpace.CreateDeviceRGB();
var gbmp = new CGBitmapContext(gdata, width, height,
8, width * 4, colorSpace, CGBitmapFlags.PremultipliedLast);
//gbmp.ClearRect(new RectangleF(0,0,width,height));
gbmp.DrawImage(new System.Drawing.RectangleF(0, 0, width, height), img.CGImage);
gbmp.Dispose();
colorSpace.Dispose();
unsafe
{
fixed(byte *srcb = gdata)
fixed(UInt32 * dest = cdata)
{
UInt32 *src = (UInt32 *)srcb;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
dest[y * width + x] = src[y * width + x];
}
}
}
}
return(new Size(width, height));
}
public GLTexture (string inFilename)
{
GL.Enable (EnableCap.Texture2D);
GL.Enable (EnableCap.Blend);
filename = inFilename;
GL.Hint (HintTarget.GenerateMipmapHint, HintMode.Nicest);
GL.GenTextures (1, out texture);
GL.BindTexture (TextureTarget.Texture2D, texture);
GL.TexParameter (TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int) All.Repeat);
GL.TexParameter (TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int) All.Repeat);
GL.TexParameter (TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int) All.Linear);
GL.TexParameter (TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int) All.Linear);
GL.TexParameter (TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int) All.Nearest);
GL.TexParameter (TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int) All.Nearest);
//TODO Remove the Substring method if you don't support iOS versions prior to iOS 6.
string extension = Path.GetExtension (filename).Substring(1);
string baseFilename = Path.GetFileNameWithoutExtension (filename);
string path = NSBundle.MainBundle.PathForResource (baseFilename, extension);
NSData texData = NSData.FromFile (path);
UIImage image = UIImage.LoadFromData (texData);
if (image == null)
return;
nint width = image.CGImage.Width;
nint height = image.CGImage.Height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB ();
byte [] imageData = new byte[height * width * 4];
CGContext context = new CGBitmapContext (imageData, width, height, 8, 4 * width, colorSpace,
CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
context.TranslateCTM (0, height);
context.ScaleCTM (1, -1);
colorSpace.Dispose ();
context.ClearRect (new CGRect (0, 0, width, height));
context.DrawImage (new CGRect (0, 0, width, height), image.CGImage);
GL.TexImage2D (TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, (int)width, (int)height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, imageData);
context.Dispose ();
}
public override void TouchesEnded(NSSet touches, UIEvent evt)
{
base.TouchesEnded(touches, evt);
var touch = (UITouch)touches.AnyObject;
var pt = touch.LocationInView(this);
#if DEBUG
Debug.WriteLine("OnColourChanged = [" + pt.X + "," + pt.Y + "]");
#endif
// extract colour from where user touched
var buffer = Marshal.AllocHGlobal((int)(Image.Size.Width * Image.Size.Height * 4));
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = new CGBitmapContext(buffer, (int)Image.Size.Width, (int)Image.Size.Height, 8, 4 * (int)Image.Size.Width, colorSpace, CGImageAlphaInfo.NoneSkipFirst);
try
{
context.InterpolationQuality = CGInterpolationQuality.None;
context.DrawImage(new Rectangle(0, 0, (int)Image.Size.Width, (int)Image.Size.Height), Image.CGImage);
unsafe
{
var bufPtr = (byte *)((void *)buffer);
int offset = (int)(4 * (Image.Size.Width * pt.Y + pt.X));
float alpha = (float)bufPtr[offset] / 255f;
float red = (float)bufPtr[offset + 1] / 255f;
float green = (float)bufPtr[offset + 2] / 255f;
float blue = (float)bufPtr[offset + 3] / 255f;
Color = new CGColor(red, green, blue, alpha);
}
}
finally
{
context.Dispose();
colorSpace.Dispose();
Marshal.FreeHGlobal(buffer);
}
if (null != OnColourChanged)
{
OnColourChanged(this, null);
}
}
public static Tuple <Microsoft.Xna.Framework.Point, byte[]> GetiOSData(Stream stream)
{
using (var uiImage = UIImage.LoadFromData(NSData.FromStream(stream)))
{
var cgImage = uiImage.CGImage;
var width = cgImage.Width;
var height = cgImage.Height;
var data = new byte[width * height * 4];
var colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapContext = new CGBitmapContext(data, width, height, 8, width * 4, colorSpace, CGBitmapFlags.PremultipliedLast);
bitmapContext.DrawImage(new RectangleF(0, 0, width, height), cgImage);
bitmapContext.Dispose();
colorSpace.Dispose();
return(new Tuple <Microsoft.Xna.Framework.Point, byte[]>(new Microsoft.Xna.Framework.Point((int)width, (int)height), data));
}
}
public IUGContext CreateDrawingSession()
{
var bpp = 8;
var width = (nint)(Scale * Width + .5F);
var height = (nint)(Scale * Height + .5F);
var stride = 4 * width;
var canvasRect = new CGRect(0F, 0F, Width, Height);
using (var colorSpace = CGColorSpace.CreateSrgb())
{
var context = new CGBitmapContext(null, width, height, bpp, stride, colorSpace, CGImageAlphaInfo.PremultipliedFirst);
context.ScaleCTM(Scale, Scale);
return(new UGContext(context, canvasRect, Scale, () =>
{
_native = context.ToImage();
context.Dispose();
context = null;
}));
}
}
public static void TexImage2D(Stream data, out int width, out int height)
{
data.Position = 0;
var nsData = NSData.FromStream(data);
var image = UIImage.LoadFromData(nsData);
if (image == null) throw new Exception ("could not load image data");
width = (int)image.CGImage.Width;
height = (int)image.CGImage.Height;
var colorSpace = CGColorSpace.CreateDeviceRGB();
var imageData = new byte[height * width * 4];
var context = new CGBitmapContext (imageData, width, height, 8, 4 * width, colorSpace, CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
colorSpace.Dispose();
context.ClearRect(new CGRect(0, 0, width, height));
context.DrawImage(new CGRect(0, 0, width, height), image.CGImage);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, imageData);
context.Dispose();
}
public NSImage Render(BitMatrix matrix, BarcodeFormat format, string content, EncodingOptions options)
{
var context = new CGBitmapContext(null, matrix.Width, matrix.Height, 8, 0, CGColorSpace.CreateGenericGray(), CGBitmapFlags.None);
var black = new CGColor(0f, 0f, 0f);
var white = new CGColor(1.0f, 1.0f, 1.0f);
for (int x = 0; x < matrix.Width; x++)
{
for (int y = 0; y < matrix.Height; y++)
{
context.SetFillColor(matrix[x, y] ? black : white);
context.FillRect(new CGRect(x, y, 1, 1));
}
}
var img = new NSImage(context.ToImage(), new CGSize(matrix.Width, matrix.Height));
context.Dispose();
return(img);
}
public static NSImage ScaleImage(this NSImage target, CGSize size, bool disposeOriginal = false)
{
CGBitmapContext context;
var width = (int)size.Width;
var height = (int)size.Height;
try
{
var colorspace = CGColorSpace.CreateDeviceRGB();
context = new CGBitmapContext(IntPtr.Zero, width, height, 8, 4 * width, colorspace, CGBitmapFlags.PremultipliedFirst);
context.SetStrokeColorSpace(colorspace);
context.SetFillColorSpace(colorspace);
}
catch (Exception exc)
{
throw new Exception($"Unable to allocate memory to scale the image to the size {size.Width},{size.Height}.", exc);
}
try
{
context.DrawImage(new CGRect(new CGPoint(0, 0), size), target.CGImage);
var cgImage = context.ToImage();
var downsizedImage = new NSImage(cgImage, size);
return(downsizedImage);
}
finally
{
context.Dispose();
if (disposeOriginal)
{
target?.Dispose();
}
}
}
private static Texture2D PlatformFromStream(GraphicsDevice graphicsDevice, CGImage cgImage)
{
var width = cgImage.Width;
var height = cgImage.Height;
var data = new byte[width * height * 4];
var colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapContext = new CGBitmapContext(data, width, height, 8, width * 4, colorSpace, CGBitmapFlags.PremultipliedLast);
bitmapContext.DrawImage(new RectangleF(0, 0, width, height), cgImage);
bitmapContext.Dispose();
colorSpace.Dispose();
Texture2D texture = null;
Threading.BlockOnUIThread(() =>
{
texture = new Texture2D(graphicsDevice, (int)width, (int)height, false, SurfaceFormat.Color);
texture.SetData(data);
});
return(texture);
}
public static Texture2D FromStream(GraphicsDevice graphicsDevice, Stream stream)
{
//todo: partial classes would be cleaner
#if IPHONE || MONOMAC
#if IPHONE
using (var uiImage = UIImage.LoadFromData(NSData.FromStream(stream)))
#elif MONOMAC
using (var nsImage = NSImage.FromStream (stream))
#endif
{
#if IPHONE
var cgImage = uiImage.CGImage;
#elif MONOMAC
var cgImage = nsImage.AsCGImage (RectangleF.Empty, null, null);
#endif
var width = cgImage.Width;
var height = cgImage.Height;
var data = new byte[width * height * 4];
var colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapContext = new CGBitmapContext(data, width, height, 8, width * 4, colorSpace, CGBitmapFlags.PremultipliedLast);
bitmapContext.DrawImage(new RectangleF(0, 0, width, height), cgImage);
bitmapContext.Dispose();
colorSpace.Dispose();
Texture2D texture = null;
Threading.BlockOnUIThread(() =>
{
texture = new Texture2D(graphicsDevice, width, height, false, SurfaceFormat.Color);
texture.SetData(data);
});
return texture;
}
#elif ANDROID
// Work-around for "The program 'Mono' has exited with code 255 (0xff)."
// Based on http://stackoverflow.com/questions/7535503/mono-for-android-exit-code-255-on-bitmapfactory-decodestream
//Bitmap image = BitmapFactory.DecodeStream(stream);
Bitmap image = null;
using (MemoryStream memStream = new MemoryStream())
{
stream.CopyTo(memStream);
image = BitmapFactory.DecodeByteArray(memStream.GetBuffer(), 0, (int)memStream.Length);
}
var width = image.Width;
var height = image.Height;
int[] pixels = new int[width * height];
if ((width != image.Width) || (height != image.Height))
{
Bitmap imagePadded = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(imagePadded);
canvas.DrawARGB(0, 0, 0, 0);
canvas.DrawBitmap(image, 0, 0, null);
imagePadded.GetPixels(pixels, 0, width, 0, 0, width, height);
}
else
{
image.GetPixels(pixels, 0, width, 0, 0, width, height);
}
// Convert from ARGB to ABGR
for (int i = 0; i < width * height; ++i)
{
uint pixel = (uint)pixels[i];
pixels[i] = (int)((pixel & 0xFF00FF00) | ((pixel & 0x00FF0000) >> 16) | ((pixel & 0x000000FF) << 16));
}
Texture2D texture = null;
Threading.BlockOnUIThread(() =>
{
texture = new Texture2D(graphicsDevice, width, height, false, SurfaceFormat.Color);
texture.SetData<int>(pixels);
});
return texture;
#elif WINRT
// For reference this implementation was ultimately found through this post:
// http://stackoverflow.com/questions/9602102/loading-textures-with-sharpdx-in-metro
Texture2D toReturn = null;
SharpDX.WIC.BitmapDecoder decoder;
using(var bitmap = LoadBitmap(stream, out decoder))
using (decoder)
{
SharpDX.Direct3D11.Texture2D sharpDxTexture = CreateTex2DFromBitmap(bitmap, graphicsDevice);
toReturn = new Texture2D(graphicsDevice, bitmap.Size.Width, bitmap.Size.Height);
toReturn._texture = sharpDxTexture;
}
return toReturn;
#elif DIRECTX
throw new NotImplementedException();
#elif PSS
return new Texture2D(graphicsDevice, stream);
#else
using (Bitmap image = (Bitmap)Bitmap.FromStream(stream))
{
// Fix up the Image to match the expected format
image.RGBToBGR();
var data = new byte[image.Width * image.Height * 4];
BitmapData bitmapData = image.LockBits(new System.Drawing.Rectangle(0, 0, image.Width, image.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
if (bitmapData.Stride != image.Width * 4) throw new NotImplementedException();
Marshal.Copy(bitmapData.Scan0, data, 0, data.Length);
image.UnlockBits(bitmapData);
Texture2D texture = null;
texture = new Texture2D(graphicsDevice, image.Width, image.Height);
texture.SetData(data);
return texture;
}
#endif
}
public static UIImage AddImageReflection(UIImage image, float reflectionFraction)
{
int reflectionHeight = (int)(image.Size.Height * reflectionFraction);
// Create a 2 bit CGImage containing a gradient that will be used for masking the
// main view content to create the 'fade' of the reflection. The CGImageCreateWithMask
// function will stretch the bitmap image as required, so we can create a 1 pixel wide gradient
// gradient is always black and white and the mask must be in the gray colorspace
var colorSpace = CGColorSpace.CreateDeviceGray();
// Creat the bitmap context
var gradientBitmapContext = new CGBitmapContext(IntPtr.Zero, 1, reflectionHeight, 8, 0, colorSpace, CGImageAlphaInfo.None);
// define the start and end grayscale values (with the alpha, even though
// our bitmap context doesn't support alpha the gradien requires it)
float [] colors = { 0, 1, 1, 1 };
// Create the CGGradient and then release the gray color space
var grayScaleGradient = new CGGradient(colorSpace, colors, null);
colorSpace.Dispose();
// create the start and end points for the gradient vector (straight down)
var gradientStartPoint = new PointF(0, reflectionHeight);
var gradientEndPoint = PointF.Empty;
// draw the gradient into the gray bitmap context
gradientBitmapContext.DrawLinearGradient(grayScaleGradient, gradientStartPoint,
gradientEndPoint, CGGradientDrawingOptions.DrawsAfterEndLocation);
grayScaleGradient.Dispose();
// Add a black fill with 50% opactiy
gradientBitmapContext.SetGrayFillColor(0, 0.5f);
gradientBitmapContext.FillRect(new RectangleF(0, 0, 1, reflectionHeight));
// conver the context into a CGImage and release the context
var gradientImageMask = gradientBitmapContext.ToImage();
gradientBitmapContext.Dispose();
// create an image by masking the bitmap of the mainView content with the gradient view
// then release the pre-masked content bitmap and the gradient bitmap
var reflectionImage = image.CGImage.WithMask(gradientImageMask);
gradientImageMask.Dispose();
var size = new SizeF(image.Size.Width, image.Size.Height + reflectionHeight);
UIGraphics.BeginImageContext(size);
image.Draw(PointF.Empty);
var context = UIGraphics.GetCurrentContext();
context.DrawImage(new RectangleF(0, image.Size.Height, image.Size.Width, reflectionHeight), reflectionImage);
var result = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
reflectionImage.Dispose();
return(result);
}
private void InitWithCGImage(CGImage image)
{
int width, height;
CGBitmapContext bitmap = null;
bool hasAlpha;
CGImageAlphaInfo alphaInfo;
CGColorSpace colorSpace;
int bitsPerComponent, bytesPerRow;
CGBitmapFlags bitmapInfo;
bool premultiplied = false;
int bitsPerPixel = 0;
if (image == null) {
throw new ArgumentException (" image is invalid! " );
}
alphaInfo = image.AlphaInfo;
hasAlpha = ((alphaInfo == CGImageAlphaInfo.PremultipliedLast) || (alphaInfo == CGImageAlphaInfo.PremultipliedFirst) || (alphaInfo == CGImageAlphaInfo.Last) || (alphaInfo == CGImageAlphaInfo.First) ? true : false);
imageSize.Width = (int)image.Width;
imageSize.Height = (int)image.Height;
width = (int)image.Width;
height = (int)image.Height;
// Not sure yet if we need to keep the original image information
// before we change it internally. TODO look at what windows does
// and follow that.
bitmapInfo = image.BitmapInfo;
bitsPerComponent = (int)image.BitsPerComponent;
bitsPerPixel = (int)image.BitsPerPixel;
bytesPerRow = width * bitsPerPixel/bitsPerComponent;
int size = bytesPerRow * height;
colorSpace = image.ColorSpace;
// Right now internally we represent the images all the same
// I left the call here just in case we find that this is not
// possible. Read the comments for non alpha images.
if(colorSpace != null) {
if( hasAlpha ) {
premultiplied = true;
colorSpace = CGColorSpace.CreateDeviceRGB ();
bitsPerComponent = 8;
bitsPerPixel = 32;
bitmapInfo = CGBitmapFlags.PremultipliedLast;
}
else
{
// even for images without alpha we will internally
// represent them as RGB with alpha. There were problems
// if we do not do it this way and creating a bitmap context.
// The images were not drawing correctly and tearing. Also
// creating a Graphics to draw on was a nightmare. This
// should probably be looked into or maybe it is ok and we
// can continue representing internally with this representation
premultiplied = true;
colorSpace = CGColorSpace.CreateDeviceRGB ();
bitsPerComponent = 8;
bitsPerPixel = 32;
bitmapInfo = CGBitmapFlags.NoneSkipLast;
}
} else {
premultiplied = true;
colorSpace = CGColorSpace.CreateDeviceRGB ();
bitsPerComponent = 8;
bitsPerPixel = 32;
bitmapInfo = CGBitmapFlags.NoneSkipLast;
}
bytesPerRow = width * bitsPerPixel/bitsPerComponent;
size = bytesPerRow * height;
bitmapBlock = Marshal.AllocHGlobal (size);
bitmap = new CGBitmapContext (bitmapBlock,
width, height,
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
bitmap.ClearRect (new CGRect (0,0,width,height));
// We need to flip the Y axis to go from right handed to lefted handed coordinate system
var transform = new CGAffineTransform(1, 0, 0, -1, 0, image.Height);
bitmap.ConcatCTM(transform);
bitmap.DrawImage (new CGRect (0, 0, image.Width, image.Height), image);
var provider = new CGDataProvider (bitmapBlock, size, true);
NativeCGImage = new CGImage (width, height, bitsPerComponent,
bitsPerPixel, bytesPerRow,
colorSpace,
bitmapInfo,
provider, null, true, image.RenderingIntent);
colorSpace.Dispose();
bitmap.Dispose();
}
public static Texture2D FromStream(GraphicsDevice graphicsDevice, Stream stream)
{
//todo: partial classes would be cleaner
#if IOS || MONOMAC
#if IOS
using (var uiImage = UIImage.LoadFromData(NSData.FromStream(stream)))
#elif MONOMAC
using (var nsImage = NSImage.FromStream (stream))
#endif
{
#if IOS
var cgImage = uiImage.CGImage;
#elif MONOMAC
var rectangle = RectangleF.Empty;
var cgImage = nsImage.AsCGImage (ref rectangle, null, null);
#endif
var width = cgImage.Width;
var height = cgImage.Height;
var data = new byte[width * height * 4];
var colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapContext = new CGBitmapContext(data, width, height, 8, width * 4, colorSpace, CGBitmapFlags.PremultipliedLast);
bitmapContext.DrawImage(new RectangleF(0, 0, width, height), cgImage);
bitmapContext.Dispose();
colorSpace.Dispose();
Texture2D texture = null;
Threading.BlockOnUIThread(() =>
{
texture = new Texture2D(graphicsDevice, width, height, false, SurfaceFormat.Color);
texture.SetData(data);
});
return texture;
}
#elif ANDROID
using (Bitmap image = BitmapFactory.DecodeStream(stream, null, new BitmapFactory.Options
{
InScaled = false,
InDither = false,
InJustDecodeBounds = false,
InPurgeable = true,
InInputShareable = true,
}))
{
var width = image.Width;
var height = image.Height;
int[] pixels = new int[width * height];
if ((width != image.Width) || (height != image.Height))
{
using (Bitmap imagePadded = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888))
{
Canvas canvas = new Canvas(imagePadded);
canvas.DrawARGB(0, 0, 0, 0);
canvas.DrawBitmap(image, 0, 0, null);
imagePadded.GetPixels(pixels, 0, width, 0, 0, width, height);
imagePadded.Recycle();
}
}
else
{
image.GetPixels(pixels, 0, width, 0, 0, width, height);
}
image.Recycle();
// Convert from ARGB to ABGR
for (int i = 0; i < width * height; ++i)
{
uint pixel = (uint)pixels[i];
pixels[i] = (int)((pixel & 0xFF00FF00) | ((pixel & 0x00FF0000) >> 16) | ((pixel & 0x000000FF) << 16));
}
Texture2D texture = null;
Threading.BlockOnUIThread(() =>
{
texture = new Texture2D(graphicsDevice, width, height, false, SurfaceFormat.Color);
texture.SetData<int>(pixels);
});
return texture;
}
#elif WINDOWS_PHONE
throw new NotImplementedException();
#elif WINDOWS_STOREAPP || DIRECTX
// For reference this implementation was ultimately found through this post:
// http://stackoverflow.com/questions/9602102/loading-textures-with-sharpdx-in-metro
Texture2D toReturn = null;
SharpDX.WIC.BitmapDecoder decoder;
using(var bitmap = LoadBitmap(stream, out decoder))
using (decoder)
{
SharpDX.Direct3D11.Texture2D sharpDxTexture = CreateTex2DFromBitmap(bitmap, graphicsDevice);
toReturn = new Texture2D(graphicsDevice, bitmap.Size.Width, bitmap.Size.Height);
toReturn._texture = sharpDxTexture;
}
return toReturn;
#elif PSM
return new Texture2D(graphicsDevice, stream);
#else
using (Bitmap image = (Bitmap)Bitmap.FromStream(stream))
{
// Fix up the Image to match the expected format
image.RGBToBGR();
var data = new byte[image.Width * image.Height * 4];
BitmapData bitmapData = image.LockBits(new System.Drawing.Rectangle(0, 0, image.Width, image.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
if (bitmapData.Stride != image.Width * 4)
throw new NotImplementedException();
Marshal.Copy(bitmapData.Scan0, data, 0, data.Length);
image.UnlockBits(bitmapData);
Texture2D texture = null;
texture = new Texture2D(graphicsDevice, image.Width, image.Height);
texture.SetData(data);
return texture;
}
#endif
}
internal new void RotateFlip(RotateFlipType rotateFlipType)
{
CGAffineTransform rotateFlip = CGAffineTransform.MakeIdentity();
int width, height;
width = (int)NativeCGImage.Width;
height = (int)NativeCGImage.Height;
switch (rotateFlipType)
{
// case RotateFlipType.RotateNoneFlipNone:
// //case RotateFlipType.Rotate180FlipXY:
// rotateFlip = GeomUtilities.CreateRotateFlipTransform (b.Width, b.Height, 0, false, false);
// break;
case RotateFlipType.Rotate90FlipNone:
//case RotateFlipType.Rotate270FlipXY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 90, false, false);
break;
case RotateFlipType.Rotate180FlipNone:
//case RotateFlipType.RotateNoneFlipXY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 0, true, true);
break;
case RotateFlipType.Rotate270FlipNone:
//case RotateFlipType.Rotate90FlipXY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 270, false, false);
break;
case RotateFlipType.RotateNoneFlipX:
//case RotateFlipType.Rotate180FlipY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 0, true, false);
break;
case RotateFlipType.Rotate90FlipX:
//case RotateFlipType.Rotate270FlipY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 90, true, false);
break;
case RotateFlipType.Rotate180FlipX:
//case RotateFlipType.RotateNoneFlipY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 0, false, true);
break;
case RotateFlipType.Rotate270FlipX:
//case RotateFlipType.Rotate90FlipY:
rotateFlip = GeomUtilities.CreateRotateFlipTransform(ref width, ref height, 270, true, false);
break;
}
var bytesPerRow = (width * (int)NativeCGImage.BitsPerPixel + 7) / 8;
var newBitmapBlock = Marshal.AllocHGlobal(height * bytesPerRow);
var newBitmapContext = new CGBitmapContext(newBitmapBlock, width, height, NativeCGImage.BitsPerComponent, bytesPerRow, NativeCGImage.ColorSpace, NativeCGImage.AlphaInfo);
newBitmapContext.ConcatCTM(rotateFlip);
newBitmapContext.DrawImage(new CGRect(0, 0, NativeCGImage.Width, NativeCGImage.Height), NativeCGImage);
newBitmapContext.Flush();
// If the width or height is not the seme we need to switch the dpiHeight and dpiWidth
// We should be able to get around this with set resolution later.
if (NativeCGImage.Width != width || NativeCGImage.Height != height)
{
var temp = dpiWidth;
dpiHeight = dpiWidth;
dpiWidth = temp;
}
physicalDimension.Width = (float)width;
physicalDimension.Height = (float)height;
physicalSize = new SizeF(physicalDimension.Width, physicalDimension.Height);
physicalSize.Width *= ConversionHelpers.MS_DPI / dpiWidth;
physicalSize.Height *= ConversionHelpers.MS_DPI / dpiHeight;
// In windows the RawFormat is changed to MemoryBmp to show that the image has changed.
rawFormat = ImageFormat.MemoryBmp;
// Set our transform for this image for the new height
imageTransform = new CGAffineTransform(1, 0, 0, -1, 0, height);
// bitmapBlock is owned by dataProvider and freed implicitly
if (dataProvider != null)
{
dataProvider.Dispose();
}
if (cachedContext != null)
{
cachedContext.Dispose();
}
NativeCGImage.Dispose();
this.bitmapBlock = newBitmapBlock;
this.dataProvider = new CGDataProvider(bitmapBlock, height * bytesPerRow);
this.NativeCGImage = newBitmapContext.ToImage();
this.cachedContext = newBitmapContext;
this.imageSource = null;
// update the cached size
imageSize.Width = this.Width;
imageSize.Height = this.Height;
}
protected override void Dispose(bool disposing)
{
renderContext.Dispose();
base.Dispose(disposing);
}
/// <summary>
/// converts an image to an ascii web page
/// </summary>
/// <param name="img">image to convert</param>
/// <param name="fileStream">opened file to write HTML</param>
/// <param name="imgBlockSize">
/// used to determine the width in pixels of one ascii character
/// which is then used to determine the block size in pixels
/// of one ascii character
/// </param>
/// <param name="fontSize">
/// fixed width font size in pixels
/// <remarks>5 pixels seems to be a good value</remarks>
/// </param>
/// <param name="quick">
/// <remarks>
/// quick brightness calculation is only done on first row of pixels in a block
/// </remarks>
/// </param>
/// <param name="colour">true to generate a colour ascii image</param>
/// <param name="monitor">
/// optional callback to monitor progress, <seealso cref="IAsciiArtProgress"/>
/// <remarks>pass in null to not monitor progress</remarks>
/// </param>
/// <returns></returns>
public static void ConvertImage(UIImage img, StreamWriter fileStream, int imgBlockSize, int fontSize, bool quick, bool colour, ICancellableProgressCallback monitor)
{
const string WebPage1 =
"<html>" +
"<body>" +
"<pre>" +
"<span style=\"font-size: {0}px;font-family: monospace;\">";
fileStream.Write(WebPage1, fontSize);
var buffer = Marshal.AllocHGlobal((int)(img.Size.Width * img.Size.Height * 4));
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = new CGBitmapContext(buffer, (int)img.Size.Width, (int)img.Size.Height, 8, 4 * (int)img.Size.Width, colorSpace, CGImageAlphaInfo.NoneSkipFirst);
try
{
context.InterpolationQuality = CGInterpolationQuality.None;
context.DrawImage(new Rectangle(0, 0, (int)img.Size.Width, (int)img.Size.Height), img.CGImage);
unsafe
{
var bufPtr = (byte *)((void *)buffer);
var pixWidth = imgBlockSize;
var pixHeight = pixWidth * 2;
var pixSeg = pixWidth * pixHeight;
var numHeightIter = img.Size.Height / pixHeight;
var numWidthIter = img.Size.Width / pixWidth;
var percentIter = (int)(numHeightIter * numWidthIter / 100) + 1;
var currIter = 0;
for (var h = 0; h < numHeightIter; h++, currIter++)
{
// segment height
var startY = (h * pixHeight);
// segment width
for (var w = 0; w < numWidthIter; w++, currIter++)
{
if (monitor.Cancel)
{
return;
}
if ((currIter % percentIter) == 0)
{
NSRunLoop.Current.RunUntil(DateTime.Now.AddMilliseconds(10));
monitor.Progress((int)(currIter / percentIter));
}
var startX = (w * pixWidth);
var allBrightness = 0f;
var allAlpha = 0f;
var allRed = 0f;
var allGreen = 0f;
var allBlue = 0f;
if (quick)
{
// each pix of this segment
for (var y = 0; y < pixWidth; y++)
{
var cY = y + startY;
var cX = 0 + startX;
try
{
if (cX < img.Size.Width)
{
int offset = (int)(4 * (img.Size.Width * cY + cX));
float alpha = (float)bufPtr[offset] / 255f;
float red = (float)bufPtr[offset + 1] / 255f;
float green = (float)bufPtr[offset + 2] / 255f;
float blue = (float)bufPtr[offset + 3] / 255f;
allAlpha += alpha;
allRed += red;
allGreen += green;
allBlue += blue;
allBrightness += RGBtoBrightness(red, green, blue);
}
}
catch
{
allBrightness += 0.5f;
}
}
}
else
{
// each pix of this segment
for (var y = 0; y < pixWidth; y++)
{
for (var x = 0; x < pixHeight; x++)
{
var cY = y + startY;
var cX = x + startX;
try
{
if (cX < img.Size.Width)
{
int offset = (int)(4 * (img.Size.Width * cY + cX));
float alpha = (float)bufPtr[offset] / 255f;
float red = (float)bufPtr[offset + 1] / 255f;
float green = (float)bufPtr[offset + 2] / 255f;
float blue = (float)bufPtr[offset + 3] / 255f;
allAlpha += alpha;
allRed += red;
allGreen += green;
allBlue += blue;
allBrightness += RGBtoBrightness(red, green, blue);
}
}
catch
{
allBrightness += 0.5f;
}
}
}
}
var avgBrt = (allBrightness / pixSeg) * 100f;
string asciiChar;
if (avgBrt < 10)
{
asciiChar = "#";
}
else if (avgBrt < 17)
{
asciiChar = "@";
}
else if (avgBrt < 24)
{
asciiChar = "&";
}
else if (avgBrt < 31)
{
asciiChar = "$";
}
else if (avgBrt < 38)
{
asciiChar = "%";
}
else if (avgBrt < 45)
{
asciiChar = "|";
}
else if (avgBrt < 52)
{
asciiChar = "!";
}
else if (avgBrt < 59)
{
asciiChar = ";";
}
else if (avgBrt < 66)
{
asciiChar = ":";
}
else if (avgBrt < 73)
{
asciiChar = "'";
}
else if (avgBrt < 80)
{
asciiChar = "`";
}
else if (avgBrt < 87)
{
asciiChar = ".";
}
else
{
asciiChar = " ";
}
if (colour)
{
const string ColourCharElement = "<code style=\"color:{0}\">{1}</code>";
var avgRed = (allRed / pixSeg);
var avgGreen = (allGreen / pixSeg);
var avgBlue = (allBlue / pixSeg);
var clrHex = string.Format("#{0:x}{1:x}{2:x}", (int)(avgRed * 255), (int)(avgGreen * 255), (int)(avgBlue * 255));
var asciiStr = string.Format(ColourCharElement, clrHex, asciiChar);
fileStream.Write(asciiStr);
}
else
{
fileStream.Write(asciiChar);
}
}
fileStream.Write("\n");
}
}
}
finally
{
context.Dispose();
colorSpace.Dispose();
Marshal.FreeHGlobal(buffer);
}
const string WebPage3 =
"</span>" +
"</pre>" +
"</body>" +
"</html>";
fileStream.Write(WebPage3);
}
public UIImage ProcessedImage()
{
nfloat scale = UIScreen.MainScreen.Scale;
CGImage imageRef = _originalImage.CGImage;
if (imageRef == null)
return null;
var bytesPerRow = 0;
var bitsPerComponent = imageRef.BitsPerComponent;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapInfo = imageRef.BitmapInfo;
CGBitmapContext context = new CGBitmapContext(null,
(nint)(_targetSize.Width * scale),
(nint)(_targetSize.Height * scale),
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
colorSpace.Dispose();
if (context == null)
{
imageRef.Dispose();
return null;
}
CGRect targetFrame = LocalCropFrame();
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetBlendMode(CGBlendMode.Copy);
context.DrawImage(targetFrame, imageRef);
var contextImage = context.ToImage();
UIImage finalImage = null;
context.Dispose();
if (contextImage != null)
{
finalImage = UIImage.FromImage(contextImage, scale, UIImageOrientation.Up);
contextImage.Dispose();
}
imageRef.Dispose();
return finalImage;
}
public Texture2D(UIImage uiImage)
{
if (uiImage == null) {
throw new ArgumentNullException("uiImage");
}
CGImage image = uiImage.CGImage;
if (image == null) {
throw new InvalidOperationException("Attempted to create a Texture2D from UIImage, but resulting CGImage is null");
}
CGImageAlphaInfo info = image.AlphaInfo;
bool hasAlpha = info == CGImageAlphaInfo.PremultipliedLast || info == CGImageAlphaInfo.PremultipliedFirst || info == CGImageAlphaInfo.Last || info == CGImageAlphaInfo.First;
int bpp = image.BitsPerComponent;
Texture2DPixelFormat pixelFormat;
if (image.ColorSpace != null) {
if (hasAlpha || bpp >= 8) {
pixelFormat = Texture2DPixelFormat.Default;
} else {
pixelFormat = Texture2DPixelFormat.RGB565;
}
} else {
pixelFormat = Texture2DPixelFormat.A8;
}
int width = image.Width;
if (width != 1 && (width & (width - 1)) != 0) {
int i = 1;
while (i < width) {
i *= 2;
}
width = i;
}
int height = image.Height;
if (height != 1 && (height & (height - 1)) != 0) {
int i = 1;
while (i < height) {
i *= 2;
}
height = i;
}
if (width > MaxTextureSize || height > MaxTextureSize) {
throw new InvalidOperationException("Image is too large. Width or height larger than MaxTextureSize");
}
CGColorSpace colorSpace = null;
CGContext context;
byte[] data;
unsafe {
// all formats require w*h*4, except A8 requires just w*h
int dataSize = width * height * 4;
if (pixelFormat == Texture2DPixelFormat.A8) {
dataSize = width * height;
}
data = new byte[dataSize];
fixed (byte* dp = data) {
switch (pixelFormat) {
case Texture2DPixelFormat.RGBA8888:
case Texture2DPixelFormat.RGBA4444:
case Texture2DPixelFormat.RGB5A1:
colorSpace = CGColorSpace.CreateDeviceRGB();
context = new CGBitmapContext((IntPtr)dp, (int)width, (int)height, 8, 4 * (int)width, colorSpace, CGImageAlphaInfo.PremultipliedLast);
break;
case Texture2DPixelFormat.RGB565:
colorSpace = CGColorSpace.CreateDeviceRGB();
context = new CGBitmapContext((IntPtr)dp, (int)width, (int)height, 8, 4 * (int)width, colorSpace, CGImageAlphaInfo.NoneSkipLast);
break;
case Texture2DPixelFormat.A8:
context = new CGBitmapContext((IntPtr)dp, (int)width, (int)height, 8, (int)width, null, CGImageAlphaInfo.Only);
break;
default:
throw new InvalidEnumArgumentException("pixelFormat", (int)pixelFormat, typeof(Texture2DPixelFormat));
}
if (colorSpace != null) {
colorSpace.Dispose();
}
context.ClearRect(new RectangleF(0, 0, width, height));
context.TranslateCTM(0, height - image.Height);
// why is this here? make an identity transform, then immediately not use it? Need to look into this
CGAffineTransform transform = CGAffineTransform.MakeIdentity();
if (!transform.IsIdentity) {
context.ConcatCTM(transform);
}
context.DrawImage(new RectangleF(0, 0, image.Width, image.Height), image);
}
}
if (pixelFormat == Texture2DPixelFormat.RGB565) {
//Convert "RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
byte[] tempData = new byte[height * width * 2];
unsafe {
fixed (byte* inPixel32b = data) {
uint* inPixel32 = (uint*)inPixel32b;
fixed (byte* outPixel16b = tempData) {
ushort* outPixel16 = (ushort*)outPixel16b;
for (int i = 0; i < width * height; ++i,++inPixel32) {
uint tempInt32 = ((((*inPixel32 >> 0) & 0xff) >> 3) << 11) | ((((*inPixel32 >> 8) & 0xff) >> 2) << 5) | ((((*inPixel32 >> 16) & 0xff) >> 3) << 0);
*outPixel16++ = (ushort)tempInt32;
}
}
}
}
data = tempData;
} else if (pixelFormat == Texture2DPixelFormat.RGBA4444) {
//Convert "RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRGGGGBBBBAAAA"
byte[] tempData = new byte[height * width * 2];
unsafe {
fixed (byte* inPixel32b = data) {
uint* inPixel32 = (uint*)inPixel32b;
fixed (byte* outPixel16b = tempData) {
ushort* outPixel16 = (ushort*)outPixel16b;
for (int i = 0; i < width * height; ++i,++inPixel32) {
uint tempInt32 = ((((*inPixel32 >> 0) & 0xff) >> 4) << 12) | ((((*inPixel32 >> 8) & 0xff) >> 4) << 8) | ((((*inPixel32 >> 16) & 0xff) >> 4) << 4) | ((((*inPixel32 >> 24) & 0xff) >> 4) << 0);
*outPixel16++ = (ushort)tempInt32;
}
}
}
}
data = tempData;
} else if (pixelFormat == Texture2DPixelFormat.RGB5A1) {
//Convert "RRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGBBBBBA"
byte[] tempData = new byte[height * width * 2];
unsafe {
fixed (byte* inPixel32b = data) {
uint* inPixel32 = (uint*)inPixel32b;
fixed (byte* outPixel16b = tempData) {
ushort* outPixel16 = (ushort*)outPixel16b;
for (int i = 0; i < width * height; ++i,++inPixel32) {
uint tempInt32 = ((((*inPixel32 >> 0) & 0xff) >> 3) << 11) | ((((*inPixel32 >> 8) & 0xff) >> 3) << 6) | ((((*inPixel32 >> 16) & 0xff) >> 3) << 1) | ((((*inPixel32 >> 24) & 0xff) >> 7) << 0);
*outPixel16++ = (ushort)tempInt32;
}
}
}
}
data = tempData;
}
InitWithData(data, pixelFormat, width, height, new SizeF(image.Width, image.Height));
HasPremultipliedAlpha = info == CGImageAlphaInfo.PremultipliedLast || info == CGImageAlphaInfo.PremultipliedFirst;
context.Dispose();
}
public void SetOriginalImage(UIImage originalImage, CGRect cropFrame)
{
LoadIndicator.StartAnimating();
InvokeOnMainThread(() =>
{
CGImage imageRef = originalImage.CGImage;
UIImageOrientation imageOrientation = originalImage.Orientation;
if (imageRef == null)
return;
var bytesPerRow = 0;
var width = imageRef.Width;
var height = imageRef.Height;
var bitsPerComponent = imageRef.BitsPerComponent;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
CGBitmapFlags bitmapInfo = imageRef.BitmapInfo;
switch (imageOrientation)
{
case UIImageOrientation.RightMirrored:
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Right:
case UIImageOrientation.Left:
width = imageRef.Height;
height = imageRef.Width;
break;
default:
break;
}
CGSize imageSize = new CGSize(width, height);
CGBitmapContext context = new CGBitmapContext(null,
width,
height,
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
colorSpace.Dispose();
if (context == null)
{
imageRef.Dispose();
return;
}
switch (imageOrientation)
{
case UIImageOrientation.RightMirrored:
case UIImageOrientation.Right:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM(-((nfloat)Math.PI / 2));
context.TranslateCTM(-imageSize.Height / 2, -imageSize.Width / 2);
break;
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Left:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM((nfloat)(Math.PI / 2));
context.TranslateCTM(-imageSize.Height / 2, -imageSize.Width / 2);
break;
case UIImageOrientation.Down:
case UIImageOrientation.DownMirrored:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM((nfloat)Math.PI);
context.TranslateCTM(-imageSize.Width / 2, -imageSize.Height / 2);
break;
default:
break;
}
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetBlendMode(CGBlendMode.Copy);
context.DrawImage(new CGRect(0, 0, imageRef.Width, imageRef.Height), imageRef);
CGImage contextImage = context.ToImage();
context.Dispose();
if (contextImage != null)
{
_originalImage = UIImage.FromImage(contextImage, originalImage.CurrentScale, UIImageOrientation.Up);
contextImage.Dispose();
}
imageRef.Dispose();
BeginInvokeOnMainThread(() =>
{
CGSize convertedImageSize = new CGSize(_originalImage.Size.Width / _cropSizeRatio,
_originalImage.Size.Height / _cropSizeRatio);
ImageView.Alpha = 0;
ImageView.Image = _originalImage;
CGSize sampleImageSize = new CGSize(Math.Max(convertedImageSize.Width, ScrollView.Frame.Size.Width),
Math.Max(convertedImageSize.Height, ScrollView.Frame.Size.Height));
ScrollView.MinimumZoomScale = 1;
ScrollView.MaximumZoomScale = 1;
ScrollView.ZoomScale = 1;
ImageView.Frame = new CGRect(0, 0, convertedImageSize.Width, convertedImageSize.Height);
nfloat zoomScale = 1;
if (convertedImageSize.Width < convertedImageSize.Height)
{
zoomScale = (ScrollView.Frame.Size.Width / convertedImageSize.Width);
}
else
{
zoomScale = (ScrollView.Frame.Size.Height / convertedImageSize.Height);
}
ScrollView.ContentSize = sampleImageSize;
if (zoomScale < 1)
{
ScrollView.MinimumZoomScale = zoomScale;
ScrollView.MaximumZoomScale = 1;
ScrollView.ZoomScale = zoomScale;
}
else
{
ScrollView.MinimumZoomScale = zoomScale;
ScrollView.MaximumZoomScale = zoomScale;
ScrollView.ZoomScale = zoomScale;
}
ScrollView.ContentInset = UIEdgeInsets.Zero;
ScrollView.ContentOffset = new CGPoint((ImageView.Frame.Size.Width - ScrollView.Frame.Size.Width) / 2, (ImageView.Frame.Size.Height - ScrollView.Frame.Size.Height) / 2);
if (cropFrame.Size.Width > 0 && cropFrame.Size.Height > 0)
{
nfloat scale = UIScreen.MainScreen.Scale;
nfloat newZoomScale = (_targetSize.Width * scale) / cropFrame.Size.Width;
ScrollView.ZoomScale = newZoomScale;
nfloat heightAdjustment = (_targetSize.Height / _cropSizeRatio) - ScrollView.ContentSize.Height;
nfloat offsetY = cropFrame.Y + (heightAdjustment * _cropSizeRatio * scale);
ScrollView.ContentOffset = new CGPoint(cropFrame.X / scale / _cropSizeRatio,
(offsetY / scale / _cropSizeRatio) - heightAdjustment);
}
ScrollView.SetNeedsLayout();
UIView.Animate(0.3,
() =>
{
LoadIndicator.Alpha = 0;
ImageView.Alpha = 1;
}, () =>
{
LoadIndicator.StopAnimating();
});
});
});
}
public void Dispose()
{
_context.Dispose();
_colorSpace.Dispose();
_handle.Free();
}
public static CGImage Scale (CGImage image, Rectangle drawRect, Size size)
{
var bytesPerRow = (size.Width * 4);
var totalBytes = (bytesPerRow * size.Height);
IntPtr bitmapData = IntPtr.Zero;
CGBitmapContext context = null;
CGImage outImage;
try {
bitmapData = Marshal.AllocHGlobal (totalBytes);
if (bitmapData == IntPtr.Zero) {
return null;
}
using (var colorSpace = CGColorSpace.CreateDeviceRGB ()) {
context = new CGBitmapContext (
bitmapData, size.Width, size.Height, 8, bytesPerRow,
colorSpace, CGImageAlphaInfo.NoneSkipFirst
);
}
if (context == null)
return null;
context.DrawImage (drawRect, image);
outImage = context.ToImage ();
} catch {
return null;
} finally {
if (context != null)
context.Dispose ();
Marshal.FreeHGlobal (bitmapData);
}
return outImage;
}
public override void Dispose()
{
_bitmapContext?.Dispose();
base.Dispose();
}
public Size GetCharData(char c,out UInt32[] cdata)
{
NSString str =new NSString(c.ToString());
var size=str.StringSize(font);
UIGraphics.BeginImageContextWithOptions(size,false,1.0f);
UIGraphics.GetCurrentContext().SetFillColor(1.0f,1.0f,1.0f,1.0f);
str.DrawString(new System.Drawing.PointF(0,0),font);
UIImage img =UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
//
int width=(int)size.Width;
int height=(int)size.Height;
cdata=new UInt32[width*height];
var gdata=new byte[width*height*4];
var colorSpace = CGColorSpace.CreateDeviceRGB();
var gbmp = new CGBitmapContext(gdata, width, height,
8, width * 4, colorSpace, CGBitmapFlags.PremultipliedLast);
//gbmp.ClearRect(new RectangleF(0,0,width,height));
gbmp.DrawImage(new System.Drawing.RectangleF(0,0,width,height),img.CGImage);
gbmp.Dispose();
colorSpace.Dispose();
unsafe
{
fixed(byte* srcb = gdata)
fixed (UInt32* dest=cdata)
{
UInt32* src=(UInt32*)srcb;
for(int y=0;y<height;y++)
{
for(int x=0;x<width;x++)
{
dest[y*width+x]=src[y*width+x];
}
}
}
}
return new Size(width,height);
}
static CGImage applyMosaic(int tileSize, List<Color> colorPalette, UIImage resizedImg, Bitmap bitmap)
{
// - Parameters
int width = tileSize; // tile width
int height = tileSize; // tile height
int outWidth = (int)(resizedImg.Size.Width - (resizedImg.Size.Width % width)); // Round image size
int outHeight = (int)(resizedImg.Size.Height - (resizedImg.Size.Height % height));
// -- Initialize buffer
CGBitmapContext context = new CGBitmapContext (System.IntPtr.Zero, // data
(int)outWidth, // width
(int)outHeight, // height
8, // bitsPerComponent
outWidth * 4, // bytesPerRow based on pixel width
CGColorSpace.CreateDeviceRGB (), // colorSpace
CGImageAlphaInfo.NoneSkipFirst);
// bitmapInfo
for (int yb = 0; yb < outHeight / height; yb++) {
for (int xb = 0; xb < outWidth / width; xb++) {
// -- Do the average colors on the source image for the
// corresponding mosaic square
int r_avg = 0;
int g_avg = 0;
int b_avg = 0;
for (int y = yb * height; y < (yb * height) + height; y++) {
for (int x = xb * width; x < (xb * width) + width; x++) {
Color c = bitmap.GetPixel (x, y);
// Retrieve color values of the source image
r_avg += c.R;
g_avg += c.G;
b_avg += c.B;
}
}
// Make average of R,G and B on filter size
r_avg = r_avg / (width * height);
g_avg = g_avg / (width * height);
b_avg = b_avg / (width * height);
// Find the nearest color in the palette
Color mosaicColor = new Color ();
double minDistance = int.MaxValue;
foreach (Color c in colorPalette) {
double distance = Math.Abs (Math.Pow (r_avg - c.R, 2) + Math.Pow (g_avg - c.G, 2) + Math.Pow (b_avg - c.B, 2));
if (distance < minDistance) {
mosaicColor = c;
minDistance = distance;
}
}
// Apply mosaic
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
context.SetFillColor (new CGColor (mosaicColor.R / 255f, mosaicColor.G / 255f, mosaicColor.B / 255f));
context.FillRect (new RectangleF (xb * width, yb * height, width, height));
}
}
}
}
//-- image from buffer
CGImage flippedImage = context.ToImage ();
context.Dispose ();
return flippedImage;
}
public void DrawClock()
{
if (imageView.Image != null)
{
imageView.Image.Dispose();
}
if (ctx != null)
{
ctx.Dispose();
}
ctx = new CGBitmapContext(IntPtr.Zero, (int)imageView.Bounds.Width, (int)imageView.Bounds.Height, 8, 4 * (int)imageView.Bounds.Width, CGColorSpace.CreateDeviceRGB(), CGImageAlphaInfo.PremultipliedFirst);
GC.Collect();
CGColor red = new CGColor(1f, 0f, 0f, 1f);
CGColor black = new CGColor(0f, 0f, 0f, 1f);
DateTime now = DateTime.Now;
int big_hand_width, small_hand_width, big_square_size, small_square_size;
if (ipad)
{
big_hand_width = 16;
small_hand_width = 10;
big_square_size = 20;
small_square_size = 10;
}
else
{
big_hand_width = 8;
small_hand_width = 5;
big_square_size = 10;
small_square_size = 5;
}
float x, y;
int r;
int sXmax = (int)imageView.Bounds.Width;
int sYmax = (int)imageView.Bounds.Width - big_square_size;
int smax;
if (sXmax <= sYmax)
{
smax = sXmax;
}
else
{
smax = sYmax;
}
int hand_max = (smax / 2) - 1;
int sXcen = sXmax / 2;
int sYcen = sYmax / 2;
#region Draw circle
for (r = 0; r < 60; r++)
{
x = ((float)Math.Cos(r * Math.PI / 180 * 6) * hand_max) + sXcen;
y = ((float)Math.Sin(r * Math.PI / 180 * 6) * hand_max) + sYcen;
switch (r)
{
case 0:
case 5:
case 10:
case 15:
case 20:
case 25:
case 30:
case 35:
case 40:
case 45:
case 50:
case 55:
ctx.SetFillColorWithColor(red);
ctx.FillRect(new System.Drawing.RectangleF(y, x, big_square_size, big_square_size));
break;
default:
ctx.SetFillColorWithColor(black);
ctx.FillRect(new System.Drawing.RectangleF(y, x, small_square_size, small_square_size));
break;
}
}
#endregion
#region Draw hour hand
ctx.SetStrokeColorWithColor(black);
float r_hour = (float)((30 * (now.Hour % 12) + now.Minute * 0.5) * (Math.PI / 180));
ctx.MoveTo(sXcen, sYcen);
ctx.SetLineWidth(big_hand_width);
ctx.AddLineToPoint((float)(Math.Sin(r_hour) * (3 * hand_max / 5) + sYcen), (float)(Math.Cos(r_hour) * (3 * hand_max / 5) + sXcen));
ctx.StrokePath();
#endregion
#region Draw minute hand
ctx.SetStrokeColorWithColor(black);
float r_minute = (float)((6 * now.Minute) * (Math.PI / 180));
ctx.MoveTo(sXcen, sYcen);
ctx.SetLineWidth(small_hand_width);
ctx.AddLineToPoint((float)(Math.Sin(r_minute) * (hand_max - 5) + sYcen), (float)(Math.Cos(r_minute) * (hand_max - 5) + sXcen));
ctx.StrokePath();
#endregion
#region Draw minute hand
ctx.SetStrokeColorWithColor(red);
float r_second = (float)((6 * now.Second) * (Math.PI / 180));
ctx.MoveTo(sXcen, sYcen);
ctx.SetLineWidth(5);
ctx.AddLineToPoint((float)(Math.Sin(r_second) * (hand_max - 5) + sYcen), (float)(Math.Cos(r_second) * (hand_max - 5) + sXcen));
ctx.StrokePath();
#endregion
float aclockX, aclockY, digital_timeX, digital_timeY, font_size;
if (ipad)
{
font_size = 32f;
aclockX = imageView.Bounds.GetMaxX() / 2 - 80;
aclockY = imageView.Bounds.GetMaxY() - 100;
digital_timeX = imageView.Bounds.GetMaxX() / 2 - 70;
digital_timeY = imageView.Bounds.GetMaxY() - 150;
}
else
{
font_size = 16f;
aclockX = imageView.Bounds.GetMaxX() / 2 - 40;
aclockY = imageView.Bounds.GetMaxY() - 50;
digital_timeX = imageView.Bounds.GetMaxX() / 2 - 35;
digital_timeY = imageView.Bounds.GetMaxY() - 100;
}
ctx.SetFillColorWithColor(black);
ctx.SelectFont("American Typewriter", font_size, CGTextEncoding.MacRoman);
ctx.SetTextDrawingMode(CGTextDrawingMode.Fill);
ctx.ShowTextAtPoint(aclockX, aclockY, ".:ACLOCK:.");
string digital_time;
if (now.Second % 2 == 0)
{
digital_time = String.Format("{0}:{1}:{2}", now.Hour.ToString("00"), now.Minute.ToString("00"), now.Second.ToString("00"));
}
else
{
digital_time = String.Format("{0} {1} {2}", now.Hour.ToString("00"), now.Minute.ToString("00"), now.Second.ToString("00"));
}
ctx.SetFillColorWithColor(black);
ctx.SelectFont("American Typewriter", font_size, CGTextEncoding.MacRoman);
ctx.SetTextDrawingMode(CGTextDrawingMode.Fill);
ctx.ShowTextAtPoint(digital_timeX, digital_timeY, digital_time);
imageView.Image = UIImage.FromImage(ctx.ToImage());
ctx.Dispose();
}
private void InitWithCGImage(CGImage image, All filter)
{
int width, height, i;
CGContext context = null;
IntPtr data;
CGColorSpace colorSpace;
IntPtr tempData;
bool hasAlpha;
CGImageAlphaInfo info;
CGAffineTransform transform;
Size imageSize;
SurfaceFormat pixelFormat;
bool sizeToFit = false;
if (image == null)
{
throw new ArgumentException(" NSImage is invalid! ");
}
info = image.AlphaInfo;
hasAlpha = ((info == CGImageAlphaInfo.PremultipliedLast) || (info == CGImageAlphaInfo.PremultipliedFirst) || (info == CGImageAlphaInfo.Last) || (info == CGImageAlphaInfo.First) ? true : false);
if (image.ColorSpace != null)
{
if (hasAlpha)
{
pixelFormat = SurfaceFormat.Rgba32;
}
else
{
pixelFormat = SurfaceFormat.Rgb32;
}
}
else
{
pixelFormat = SurfaceFormat.Alpha8;
}
imageSize = new Size(image.Width, image.Height);
transform = CGAffineTransform.MakeIdentity();
width = imageSize.Width;
if ((width != 1) && ((width & (width - 1)) != 0))
{
i = 1;
while ((sizeToFit ? 2 * i : i) < width)
{
i *= 2;
}
width = i;
}
height = imageSize.Height;
if ((height != 1) && ((height & (height - 1)) != 0))
{
i = 1;
while ((sizeToFit ? 2 * i : i) < height)
{
i *= 2;
}
height = i;
}
// TODO: kMaxTextureSize = 1024
while ((width > 1024) || (height > 1024))
{
width /= 2;
height /= 2;
transform = CGAffineTransform.MakeScale(0.5f, 0.5f);
imageSize.Width /= 2;
imageSize.Height /= 2;
}
switch (pixelFormat)
{
case SurfaceFormat.Rgba32:
colorSpace = CGColorSpace.CreateDeviceRGB();
data = Marshal.AllocHGlobal(height * width * 4);
context = new CGBitmapContext(data, width, height, 8, 4 * width, colorSpace, CGImageAlphaInfo.PremultipliedLast);
colorSpace.Dispose();
break;
case SurfaceFormat.Rgb32:
colorSpace = CGColorSpace.CreateDeviceRGB();
data = Marshal.AllocHGlobal(height * width * 4);
context = new CGBitmapContext(data, width, height, 8, 4 * width, colorSpace, CGImageAlphaInfo.NoneSkipLast);
colorSpace.Dispose();
break;
case SurfaceFormat.Alpha8:
data = Marshal.AllocHGlobal(height * width);
context = new CGBitmapContext(data, width, height, 8, width, null, CGImageAlphaInfo.Only);
break;
default:
throw new NotSupportedException("Invalid pixel format");
}
context.ClearRect(new RectangleF(0, 0, width, height));
context.TranslateCTM(0, height - imageSize.Height);
if (!transform.IsIdentity)
{
context.ConcatCTM(transform);
}
context.DrawImage(new RectangleF(0, 0, image.Width, image.Height), image);
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
if (pixelFormat == SurfaceFormat.Rgb32)
{
tempData = Marshal.AllocHGlobal(height * width * 2);
int d32;
short d16;
int inPixel32Count = 0, outPixel16Count = 0;
for (i = 0; i < width * height; ++i, inPixel32Count += sizeof(int))
{
d32 = Marshal.ReadInt32(data, inPixel32Count);
short R = (short)((((d32 >> 0) & 0xFF) >> 3) << 11);
short G = (short)((((d32 >> 8) & 0xFF) >> 2) << 5);
short B = (short)((((d32 >> 16) & 0xFF) >> 3) << 0);
d16 = (short)(R | G | B);
Marshal.WriteInt16(tempData, outPixel16Count, d16);
outPixel16Count += sizeof(short);
}
Marshal.FreeHGlobal(data);
data = tempData;
}
InitWithData(data, pixelFormat, width, height, imageSize, filter);
context.Dispose();
Marshal.FreeHGlobal(data);
}
public static UIImage MakeRoundCornerImage(UIImage img, int cornerWidth, int cornerHeight)
{
UIImage newImage = null;
if (null != img)
{
var w = img.Size.Width;
var h = img.Size.Height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
CGContext context = new CGBitmapContext(null, (int)w, (int)h, 8, (int)(4 * w), colorSpace, CGImageAlphaInfo.PremultipliedFirst);
context.BeginPath();
var rect = new RectangleF(0, 0, img.Size.Width, img.Size.Height);
AddRoundedRectToPath (context, rect, cornerWidth, cornerHeight);
context.ClosePath();
context.Clip();
var cgImage = img.CGImage;
context.DrawImage (new RectangleF(0, 0, w, h), cgImage);
cgImage.Dispose();
CGImage imageMasked = ((CGBitmapContext)context).ToImage();
context.Dispose();
colorSpace.Dispose();
newImage = new UIImage(imageMasked);
imageMasked.Dispose();
}
return newImage;
}
private void InitWithCGImage(CGImage image, All filter)
{
int width,height,i;
CGContext context = null;
IntPtr data;
CGColorSpace colorSpace;
IntPtr tempData;
bool hasAlpha;
CGImageAlphaInfo info;
CGAffineTransform transform;
Size imageSize;
SurfaceFormat pixelFormat;
bool sizeToFit = false;
if(image == null)
{
throw new ArgumentException(" uimage is invalid! " );
}
info = image.AlphaInfo;
hasAlpha = ((info == CGImageAlphaInfo.PremultipliedLast) || (info == CGImageAlphaInfo.PremultipliedFirst) || (info == CGImageAlphaInfo.Last) || (info == CGImageAlphaInfo.First) ? true : false);
if (image.ColorSpace != null)
{
pixelFormat = SurfaceFormat.Color;
}
else
{
pixelFormat = SurfaceFormat.Alpha8;
}
imageSize = new Size(image.Width,image.Height);
transform = CGAffineTransform.MakeIdentity();
width = imageSize.Width;
if((width != 1) && ((width & (width - 1))!=0)) {
i = 1;
while((sizeToFit ? 2 * i : i) < width)
i *= 2;
width = i;
}
height = imageSize.Height;
if((height != 1) && ((height & (height - 1))!=0)) {
i = 1;
while((sizeToFit ? 2 * i : i) < height)
i *= 2;
height = i;
}
// TODO: kMaxTextureSize = 1024
while((width > 1024) || (height > 1024))
{
width /= 2;
height /= 2;
transform = CGAffineTransform.MakeScale(0.5f,0.5f);
imageSize.Width /= 2;
imageSize.Height /= 2;
}
switch(pixelFormat)
{
case SurfaceFormat.Color:
colorSpace = CGColorSpace.CreateDeviceRGB();
data = Marshal.AllocHGlobal(height * width * 4);
context = new CGBitmapContext(data, width, height, 8, 4 * width, colorSpace,CGImageAlphaInfo.PremultipliedLast);
colorSpace.Dispose();
break;
case SurfaceFormat.Alpha8:
data = Marshal.AllocHGlobal(height * width);
context = new CGBitmapContext(data, width, height, 8, width, null, CGImageAlphaInfo.Only);
break;
default:
throw new NotSupportedException("Invalid pixel format");
}
context.ClearRect(new RectangleF(0,0,width,height));
context.TranslateCTM(0, height - imageSize.Height);
if (!transform.IsIdentity)
{
context.ConcatCTM(transform);
}
context.DrawImage(new RectangleF(0, 0, image.Width, image.Height), image);
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
/*
if(pixelFormat == SurfaceFormat.Rgb32) {
tempData = Marshal.AllocHGlobal(height * width * 2);
int d32;
short d16;
int inPixel32Count=0,outPixel16Count=0;
for(i = 0; i < width * height; ++i, inPixel32Count+=sizeof(int))
{
d32 = Marshal.ReadInt32(data,inPixel32Count);
short R = (short)((((d32 >> 0) & 0xFF) >> 3) << 11);
short G = (short)((((d32 >> 8) & 0xFF) >> 2) << 5);
short B = (short)((((d32 >> 16) & 0xFF) >> 3) << 0);
d16 = (short) (R | G | B);
Marshal.WriteInt16(tempData,outPixel16Count,d16);
outPixel16Count += sizeof(short);
}
Marshal.FreeHGlobal(data);
data = tempData;
}
*/
InitWithData(data,pixelFormat,width,height,imageSize, filter);
context.Dispose();
Marshal.FreeHGlobal (data);
}
public bool Finalize (IMTLDevice device)
{
if (MetalTexture != null)
return true;
UIImage image = UIImage.FromFile (path);
if (image == null)
return false;
using (CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB ()) {
if (colorSpace == null)
return false;
Width = image.CGImage.Width;
Height = image.CGImage.Height;
nuint width = (nuint)Width;
nuint height = (nuint)Height;
nuint rowBytes = width * 4;
var context = new CGBitmapContext (IntPtr.Zero,
(int)width,
(int)height,
8,
(int)rowBytes,
colorSpace,
CGImageAlphaInfo.PremultipliedLast);
if (context == null)
return false;
var bounds = new CGRect (0f, 0f, width, height);
context.ClearRect (bounds);
// Vertical Reflect
if (flip) {
context.TranslateCTM (width, height);
context.ScaleCTM (-1f, -1f);
}
context.DrawImage (bounds, image.CGImage);
MTLTextureDescriptor texDesc = MTLTextureDescriptor.CreateTexture2DDescriptor (MTLPixelFormat.RGBA8Unorm, width, height, false);
if (texDesc == null)
return false;
MetalTexture = device.CreateTexture (texDesc);
if (MetalTexture == null) {
context.Dispose ();
return false;
}
IntPtr pixels = context.Data;
if (pixels != IntPtr.Zero) {
var region = new MTLRegion ();
region.Origin.X = 0;
region.Origin.Y = 0;
region.Size.Width = (nint)width;
region.Size.Height = (nint)height;
MetalTexture.ReplaceRegion (region, 0, pixels, rowBytes);
}
context.Dispose ();
}
return true;
}
public static UIImage RemoveColor(UIImage image, UIColor color, float tolerance)
{
// convert color to RGBA (may be greyscale for example);
nfloat r, g, b, a;
color.GetRGBA(out r, out g, out b, out a);
color = UIColor.FromRGBA(r, g, b, a);
var imageRef = image.CGImage;
var width = (int)imageRef.Width;
var height = (int)imageRef.Height;
var colorSpace = CGColorSpace.CreateDeviceRGB();
var bytesPerPixel = 4;
var bytesPerRow = bytesPerPixel * width;
var bitsPerComponent = 8;
var bitmapByteCount = bytesPerRow * height;
byte[] rawData = new byte[bitmapByteCount];
var context = new CGBitmapContext(
rawData,
width,
height,
bitsPerComponent,
bytesPerRow,
colorSpace,
CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
colorSpace.Dispose();
context.DrawImage(new CGRect(0, 0, width, height), imageRef);
var cgColor = color.CGColor;
var components = cgColor.Components;
r = components[0];
g = components[1];
b = components[2];
//float a = components[3]; // not needed
r = r * 255.0f;
g = g * 255.0f;
b = b * 255.0f;
var redRange = new[] {
(nfloat)Math.Max(r - (tolerance / 2.0f), 0.0f),
(nfloat)Math.Min(r + (tolerance / 2.0f), 255.0f)
};
var greenRange = new[] {
(nfloat)Math.Max(g - (tolerance / 2.0f), 0.0f),
(nfloat)Math.Min(g + (tolerance / 2.0f), 255.0f)
};
var blueRange = new[] {
(nfloat)Math.Max(b - (tolerance / 2.0f), 0.0f),
(nfloat)Math.Min(b + (tolerance / 2.0f), 255.0f)
};
int byteIndex = 0;
while (byteIndex < bitmapByteCount)
{
var red = rawData[byteIndex];
var green = rawData[byteIndex + 1];
var blue = rawData[byteIndex + 2];
if (((red >= redRange[0]) && (red <= redRange[1])) &&
((green >= greenRange[0]) && (green <= greenRange[1])) &&
((blue >= blueRange[0]) && (blue <= blueRange[1])))
{
// make the pixel transparent
//
rawData[byteIndex] = 0;
rawData[byteIndex + 1] = 0;
rawData[byteIndex + 2] = 0;
rawData[byteIndex + 3] = 0;
}
byteIndex += 4;
}
var result = new UIImage(context.ToImage());
context.Dispose();
return(result);
}
static CGImage applyMosaic(int tileSize, List <Color> colorPalette, UIImage resizedImg, Bitmap bitmap)
{
// - Parameters
int width = tileSize; // tile width
int height = tileSize; // tile height
int outWidth = (int)(resizedImg.Size.Width - (resizedImg.Size.Width % width)); // Round image size
int outHeight = (int)(resizedImg.Size.Height - (resizedImg.Size.Height % height));
// -- Initialize buffer
CGBitmapContext context = new CGBitmapContext(System.IntPtr.Zero, // data
(int)outWidth, // width
(int)outHeight, // height
8, // bitsPerComponent
outWidth * 4, // bytesPerRow based on pixel width
CGColorSpace.CreateDeviceRGB(), // colorSpace
CGImageAlphaInfo.NoneSkipFirst);
// bitmapInfo
for (int yb = 0; yb < outHeight / height; yb++)
{
for (int xb = 0; xb < outWidth / width; xb++)
{
// -- Do the average colors on the source image for the
// corresponding mosaic square
int r_avg = 0;
int g_avg = 0;
int b_avg = 0;
for (int y = yb * height; y < (yb * height) + height; y++)
{
for (int x = xb * width; x < (xb * width) + width; x++)
{
Color c = bitmap.GetPixel(x, y);
// Retrieve color values of the source image
r_avg += c.R;
g_avg += c.G;
b_avg += c.B;
}
}
// Make average of R,G and B on filter size
r_avg = r_avg / (width * height);
g_avg = g_avg / (width * height);
b_avg = b_avg / (width * height);
// Find the nearest color in the palette
Color mosaicColor = new Color();
double minDistance = int.MaxValue;
foreach (Color c in colorPalette)
{
double distance = Math.Abs(Math.Pow(r_avg - c.R, 2) + Math.Pow(g_avg - c.G, 2) + Math.Pow(b_avg - c.B, 2));
if (distance < minDistance)
{
mosaicColor = c;
minDistance = distance;
}
}
// Apply mosaic
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
context.SetFillColor(new CGColor(mosaicColor.R / 255f, mosaicColor.G / 255f, mosaicColor.B / 255f));
context.FillRect(new RectangleF(xb * width, yb * height, width, height));
}
}
}
}
//-- image from buffer
CGImage flippedImage = context.ToImage();
context.Dispose();
return(flippedImage);
}
public ESTexture2D(UIImage uiImage, All filter)
{
CGImage image = uiImage.CGImage;
if(uiImage == null)
throw new ArgumentNullException("uiImage");
// TODO: could use this to implement lower-bandwidth textures
//bool hasAlpha = (image.AlphaInfo == CGImageAlphaInfo.First || image.AlphaInfo == CGImageAlphaInfo.Last
// || image.AlphaInfo == CGImageAlphaInfo.PremultipliedFirst || image.AlphaInfo == CGImageAlphaInfo.PremultipliedLast);
// Image dimentions:
logicalSize = new Point((int)uiImage.Size.Width, (int)uiImage.Size.Height);
pixelWidth = uiImage.CGImage.Width;
pixelHeight = uiImage.CGImage.Height;
// Round up the target texture width and height to powers of two:
potWidth = pixelWidth;
potHeight = pixelHeight;
if(( potWidth & ( potWidth-1)) != 0) { int w = 1; while(w < potWidth) { w *= 2; } potWidth = w; }
if((potHeight & (potHeight-1)) != 0) { int h = 1; while(h < potHeight) { h *= 2; } potHeight = h; }
// Scale down textures that are too large...
CGAffineTransform transform = CGAffineTransform.MakeIdentity();
while((potWidth > 1024) || (potHeight > 1024))
{
potWidth /= 2; // Note: no precision loss - it's a power of two
potHeight /= 2;
pixelWidth /= 2; // Note: precision loss - assume possibility of dropping a pixel at each step is ok
pixelHeight /= 2;
transform.Multiply(CGAffineTransform.MakeScale(0.5f, 0.5f));
}
RecalculateRatio();
lock(textureLoadBufferLockObject)
{
CreateTextureLoadBuffer();
unsafe
{
fixed(byte* data = textureLoadBuffer)
{
var colorSpace = CGColorSpace.CreateDeviceRGB();
var context = new CGBitmapContext(new IntPtr(data), potWidth, potHeight,
8, 4 * potWidth, colorSpace, CGImageAlphaInfo.PremultipliedLast);
context.ClearRect(new RectangleF(0, 0, potWidth, potHeight));
context.TranslateCTM(0, potHeight - pixelHeight); // TODO: this does not play nice with the precision-loss above (keeping half-pixel to the edge)
if(!transform.IsIdentity)
context.ConcatCTM(transform);
context.DrawImage(new RectangleF(0, 0, image.Width, image.Height), image);
SetupTexture(new IntPtr(data), filter);
context.Dispose();
colorSpace.Dispose();
}
}
}
}
public static UIImage FixOrientation(UIImage originalImage)
{
if (originalImage.Orientation == UIImageOrientation.Up)
{
return(originalImage);
}
CGAffineTransform transform = CGAffineTransform.MakeIdentity();
switch (originalImage.Orientation)
{
case UIImageOrientation.Down:
case UIImageOrientation.DownMirrored:
transform.Rotate((float)Math.PI);
transform.Translate(originalImage.Size.Width, originalImage.Size.Height);
break;
case UIImageOrientation.Left:
case UIImageOrientation.LeftMirrored:
transform.Rotate((float)Math.PI / 2);
transform.Translate(originalImage.Size.Width, 0);
break;
case UIImageOrientation.Right:
case UIImageOrientation.RightMirrored:
transform.Rotate(-(float)Math.PI / 2);
transform.Translate(0, originalImage.Size.Height);
break;
case UIImageOrientation.Up:
case UIImageOrientation.UpMirrored:
break;
}
switch (originalImage.Orientation)
{
case UIImageOrientation.UpMirrored:
case UIImageOrientation.DownMirrored:
transform.Translate(originalImage.Size.Width, 0);
transform.Scale(-1, 1);
break;
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.RightMirrored:
transform.Translate(originalImage.Size.Height, 0);
transform.Scale(-1, 1);
break;
case UIImageOrientation.Up:
case UIImageOrientation.Down:
case UIImageOrientation.Left:
case UIImageOrientation.Right:
break;
}
var ctx = new CGBitmapContext(IntPtr.Zero, (nint)originalImage.Size.Width, (nint)originalImage.Size.Height, originalImage.CGImage.BitsPerComponent, originalImage.CGImage.BytesPerRow,
originalImage.CGImage.ColorSpace, originalImage.CGImage.BitmapInfo);
ctx.ConcatCTM(transform);
switch (originalImage.Orientation)
{
case UIImageOrientation.Left:
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Right:
case UIImageOrientation.RightMirrored:
ctx.DrawImage(new CGRect(0, 0, originalImage.Size.Height, originalImage.Size.Width), originalImage.CGImage);
break;
default:
ctx.DrawImage(new CGRect(0, 0, originalImage.Size.Width, originalImage.Size.Height), originalImage.CGImage);
break;
}
var cgImage = ctx.ToImage();
UIImage result = UIImage.FromImage(cgImage);
ctx.Dispose();
cgImage.Dispose();
return(result);
}
public static TextureData FromUIImage(UIImage uiImage)
{
if (uiImage == null)
{
throw new ArgumentNullException("uiImage");
}
var image = uiImage.CGImage;
if (image == null)
{
throw new ArgumentNullException("uiImage.CGImage");
}
var info = image.AlphaInfo;
var hasAlpha = ((info == CGImageAlphaInfo.PremultipliedLast) || (info == CGImageAlphaInfo.PremultipliedFirst) || (info == CGImageAlphaInfo.Last) || (info == CGImageAlphaInfo.First));
var pixelFormat = TexturePixelFormat.RGBA8888;
if (image.ColorSpace != null)
{
if (hasAlpha)
{
pixelFormat = TexturePixelFormat.RGBA8888;
}
else
{
pixelFormat = TexturePixelFormat.RGB565;
}
}
else //NOTE: No colorspace means a mask image
{
pixelFormat = TexturePixelFormat.A8;
}
var width = image.Width;
var height = image.Height;
var data = IntPtr.Zero;
CGBitmapContext context = null;
switch (pixelFormat)
{
case TexturePixelFormat.RGBA8888:
using (var colorSpace = CGColorSpace.CreateDeviceRGB()) {
data = Marshal.AllocHGlobal(height * width * 4);
context = new CGBitmapContext(data, width, height, 8, 4 * width, colorSpace,
(CGImageAlphaInfo)((uint)CGImageAlphaInfo.PremultipliedLast | (uint)CGBitmapFlags.ByteOrder32Big));
}
break;
case TexturePixelFormat.RGB565:
using (var colorSpace = CGColorSpace.CreateDeviceRGB()) {
data = Marshal.AllocHGlobal(height * width * 4);
context = new CGBitmapContext(data, width, height, 8, 4 * width, colorSpace,
(CGImageAlphaInfo)((uint)CGImageAlphaInfo.NoneSkipLast | (uint)CGBitmapFlags.ByteOrder32Big));
}
break;
case TexturePixelFormat.A8:
data = Marshal.AllocHGlobal(height * width);
context = new CGBitmapContext(data, width, height, 8, width, null, CGImageAlphaInfo.Only);
break;
default:
throw new NotSupportedException(pixelFormat + " is not supported");
}
context.ClearRect(new RectangleF(0, 0, width, height));
context.DrawImage(new RectangleF(0, 0, width, height), image);
context.Dispose();
if (pixelFormat == TexturePixelFormat.RGB565)
{
var tempData = Marshal.AllocHGlobal(height * width * 2);
unsafe {
var inPixel32 = (uint *)data;
var outPixel16 = (ushort *)tempData;
for (var i = 0; i < width * height; ++i, ++inPixel32)
{
*outPixel16++ = (ushort)(((((*inPixel32 >> 0) & 0xFF) >> 3) << 11) |
((((*inPixel32 >> 8) & 0xFF) >> 2) << 5) |
((((*inPixel32 >> 16) & 0xFF) >> 3) << 0));
}
}
Marshal.FreeHGlobal(data);
data = tempData;
}
return(new TextureData(data, pixelFormat, width, height));
}
public bool Finalize(IMTLDevice device)
{
if (MetalTexture != null)
{
return(true);
}
UIImage image = UIImage.FromFile(path);
if (image == null)
{
return(false);
}
using (CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB()) {
if (colorSpace == null)
{
return(false);
}
Width = image.CGImage.Width;
Height = image.CGImage.Height;
nuint width = (nuint)Width;
nuint height = (nuint)Height;
nuint rowBytes = width * 4;
var context = new CGBitmapContext(IntPtr.Zero,
(int)width,
(int)height,
8,
(int)rowBytes,
colorSpace,
CGImageAlphaInfo.PremultipliedLast);
if (context == null)
{
return(false);
}
var bounds = new CGRect(0f, 0f, width, height);
context.ClearRect(bounds);
// Vertical Reflect
if (flip)
{
context.TranslateCTM(width, height);
context.ScaleCTM(-1f, -1f);
}
context.DrawImage(bounds, image.CGImage);
MTLTextureDescriptor texDesc = MTLTextureDescriptor.CreateTexture2DDescriptor(MTLPixelFormat.RGBA8Unorm, width, height, false);
if (texDesc == null)
{
return(false);
}
MetalTexture = device.CreateTexture(texDesc);
if (MetalTexture == null)
{
context.Dispose();
return(false);
}
IntPtr pixels = context.Data;
if (pixels != IntPtr.Zero)
{
var region = new MTLRegion();
region.Origin.X = 0;
region.Origin.Y = 0;
region.Size.Width = (nint)width;
region.Size.Height = (nint)height;
MetalTexture.ReplaceRegion(region, 0, pixels, rowBytes);
}
context.Dispose();
}
return(true);
}
public override object ConvertToBitmap(ImageDescription idesc, double scaleFactor, ImageFormat format)
{
double width = idesc.Size.Width;
double height = idesc.Size.Height;
int pixelWidth = (int)(width * scaleFactor);
int pixelHeight = (int)(height * scaleFactor);
if (idesc.Backend 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 CGSize((nfloat)width, (nfloat)height),
InverseViewTransform = bmp.GetCTM().Invert(),
ScaleFactor = scaleFactor
};
var ci = (CustomImage)idesc.Backend;
ci.DrawInContext(ctx, idesc);
var img = new NSImage(((CGBitmapContext)bmp).ToImage(), new CGSize(pixelWidth, pixelHeight));
var imageData = img.AsTiff();
var imageRep = (NSBitmapImageRep)NSBitmapImageRep.ImageRepFromData(imageData);
var im = new NSImage();
im.AddRepresentation(imageRep);
im.Size = new CGSize((nfloat)width, (nfloat)height);
bmp.Dispose();
return(im);
}
else
{
NSImage img = (NSImage)idesc.Backend;
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 CGSize((nfloat)width, (nfloat)height);
return(im);
}
return(idesc.Backend);
}
}
public void GetData <T>(int level, Rectangle?rect, T[] data, int startIndex, int elementCount)
{
if (data == null)
{
throw new ArgumentException("data cannot be null");
}
if (data.Length < startIndex + elementCount)
{
throw new ArgumentException("The data passed has a length of " + data.Length + " but " + elementCount + " pixels have been requested.");
}
Rectangle r;
if (rect != null)
{
r = rect.Value;
}
else
{
r = new Rectangle(0, 0, Width, Height);
}
int sz = 0;
byte[] pixel = new byte[4];
int pos;
IntPtr pixelOffset;
// Get the Color values
if ((typeof(T) == typeof(Color)))
{
// Load up texture into memory
UIImage uiImage = UIImage.FromBundle(this.Name);
if (uiImage == null)
{
throw new ContentLoadException("Error loading file via UIImage: " + Name);
}
CGImage image = uiImage.CGImage;
if (image == null)
{
throw new ContentLoadException("Error with CGIamge: " + Name);
}
int width, height, i;
CGContext context = null;
IntPtr imageData;
CGColorSpace colorSpace;
IntPtr tempData;
bool hasAlpha;
CGImageAlphaInfo info;
CGAffineTransform transform;
Size imageSize;
SurfaceFormat pixelFormat;
bool sizeToFit = false;
info = image.AlphaInfo;
hasAlpha = ((info == CGImageAlphaInfo.PremultipliedLast) || (info == CGImageAlphaInfo.PremultipliedFirst) || (info == CGImageAlphaInfo.Last) || (info == CGImageAlphaInfo.First) ? true : false);
if (image.ColorSpace != null)
{
pixelFormat = SurfaceFormat.Color;
}
else
{
pixelFormat = SurfaceFormat.Alpha8;
}
imageSize = new Size(image.Width, image.Height);
transform = CGAffineTransform.MakeIdentity();
width = imageSize.Width;
if ((width != 1) && ((width & (width - 1)) != 0))
{
i = 1;
while ((sizeToFit ? 2 * i : i) < width)
{
i *= 2;
}
width = i;
}
height = imageSize.Height;
if ((height != 1) && ((height & (height - 1)) != 0))
{
i = 1;
while ((sizeToFit ? 2 * i : i) < height)
{
i *= 2;
}
height = i;
}
// TODO: kMaxTextureSize = 1024
while ((width > 1024) || (height > 1024))
{
width /= 2;
height /= 2;
transform = CGAffineTransform.MakeScale(0.5f, 0.5f);
imageSize.Width /= 2;
imageSize.Height /= 2;
}
switch (pixelFormat)
{
case SurfaceFormat.Color:
colorSpace = CGColorSpace.CreateDeviceRGB();
imageData = Marshal.AllocHGlobal(height * width * 4);
context = new CGBitmapContext(imageData, width, height, 8, 4 * width, colorSpace, CGImageAlphaInfo.PremultipliedLast);
colorSpace.Dispose();
break;
case SurfaceFormat.Alpha8:
imageData = Marshal.AllocHGlobal(height * width);
context = new CGBitmapContext(imageData, width, height, 8, width, null, CGImageAlphaInfo.Only);
break;
default:
throw new NotSupportedException("Invalid pixel format");
}
context.ClearRect(new RectangleF(0, 0, width, height));
context.TranslateCTM(0, height - imageSize.Height);
if (!transform.IsIdentity)
{
context.ConcatCTM(transform);
}
context.DrawImage(new RectangleF(0, 0, image.Width, image.Height), image);
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
/*
* if(pixelFormat == SurfaceFormat.Rgb32) {
* tempData = Marshal.AllocHGlobal(height * width * 2);
*
* int d32;
* short d16;
* int inPixel32Count=0,outPixel16Count=0;
* for(i = 0; i < width * height; ++i, inPixel32Count+=sizeof(int))
* {
* d32 = Marshal.ReadInt32(imageData,inPixel32Count);
* short R = (short)((((d32 >> 0) & 0xFF) >> 3) << 11);
* short G = (short)((((d32 >> 8) & 0xFF) >> 2) << 5);
* short B = (short)((((d32 >> 16) & 0xFF) >> 3) << 0);
* d16 = (short) (R | G | B);
* Marshal.WriteInt16(tempData,outPixel16Count,d16);
* outPixel16Count += sizeof(short);
* }
* Marshal.FreeHGlobal(imageData);
* imageData = tempData;
* }
*/
int count = 0;
// Loop through and extract the data
for (int y = r.Top; y < r.Bottom; y++)
{
for (int x = r.Left; x < r.Right; x++)
{
var result = new Color(0, 0, 0, 0);
switch (this.Format)
{
case SurfaceFormat.Color /*kTexture2DPixelFormat_RGBA8888*/:
case SurfaceFormat.Dxt3:
sz = 4;
pos = ((y * imageSize.Width) + x) * sz;
pixelOffset = new IntPtr(imageData.ToInt64() + pos);
Marshal.Copy(pixelOffset, pixel, 0, 4);
result.R = pixel[0];
result.G = pixel[1];
result.B = pixel[2];
result.A = pixel[3];
break;
case SurfaceFormat.Bgra4444 /*kTexture2DPixelFormat_RGBA4444*/:
sz = 2;
pos = ((y * imageSize.Width) + x) * sz;
pixelOffset = new IntPtr(imageData.ToInt64() + pos);
Marshal.Copy(pixelOffset, pixel, 0, 4);
result.R = pixel[0];
result.G = pixel[1];
result.B = pixel[2];
result.A = pixel[3];
break;
case SurfaceFormat.Bgra5551 /*kTexture2DPixelFormat_RGB5A1*/:
sz = 2;
pos = ((y * imageSize.Width) + x) * sz;
pixelOffset = new IntPtr(imageData.ToInt64() + pos);
Marshal.Copy(pixelOffset, pixel, 0, 4);
result.R = pixel[0];
result.G = pixel[1];
result.B = pixel[2];
result.A = pixel[3];
break;
case SurfaceFormat.Alpha8 /*kTexture2DPixelFormat_A8*/:
sz = 1;
pos = ((y * imageSize.Width) + x) * sz;
pixelOffset = new IntPtr(imageData.ToInt64() + pos);
Marshal.Copy(pixelOffset, pixel, 0, 4);
result.A = pixel[0];
break;
default:
throw new NotSupportedException("Texture format");
}
data[((y * imageSize.Width) + x)] = (T)(object)result;
count++;
if (count >= elementCount)
{
return;
}
}
}
context.Dispose();
Marshal.FreeHGlobal(imageData);
}
else
{
throw new NotImplementedException();
}
}
