private void FixSize()
{
int width, height;
GetPlatformWindowSize(out width, out height);
if (Width == width && Height == height)
return;
Width = width;
Height = height;
if (Surface != null)
{
Surface.Dispose();
}
if (_bitmap != null)
{
_bitmap.Dispose();
}
_bitmap = new SKBitmap(width, height, SKImageInfo.PlatformColorType, SKAlphaType.Premul);
IntPtr length;
var pixels = _bitmap.GetPixels(out length);
// Wrap the bitmap in a Surface and keep it cached
Surface = SKSurface.Create(_bitmap.Info, pixels, _bitmap.RowBytes);
}
public static SKBitmap Decode(SKCodec codec, SKImageInfo bitmapInfo)
{
if (codec == null)
{
throw new ArgumentNullException(nameof(codec));
}
// construct a color table for the decode if necessary
SKColorTable colorTable = null;
int colorCount = 0;
if (bitmapInfo.ColorType == SKColorType.Index8)
{
colorTable = new SKColorTable();
}
// read the pixels and color table
var bitmap = new SKBitmap(bitmapInfo, colorTable);
IntPtr length;
var result = codec.GetPixels(bitmapInfo, bitmap.GetPixels(out length), colorTable, ref colorCount);
if (result != SKCodecResult.Success && result != SKCodecResult.IncompleteInput)
{
bitmap.Dispose();
bitmap = null;
}
return(bitmap);
}
public static SKBitmap Decode(SKCodec codec)
{
var info = codec.Info;
// construct a color table for the decode if necessary
SKColorTable colorTable = null;
int colorCount = 0;
if (info.ColorType == SKColorType.Index8)
{
colorTable = new SKColorTable();
}
// read the pixels and color table
var bitmap = new SKBitmap(info, colorTable);
IntPtr length;
var result = codec.GetPixels(info, bitmap.GetPixels(out length), colorTable, ref colorCount);
if (result != SKCodecResult.Success && result != SKCodecResult.IncompleteInput)
{
bitmap.Dispose();
bitmap = null;
}
return(bitmap);
}
public static SKBitmap FromImage (SKImage image)
{
if (image == null) {
throw new ArgumentNullException (nameof (image));
}
var info = new SKImageInfo (image.Width, image.Height, SKImageInfo.PlatformColorType, image.AlphaType);
var bmp = new SKBitmap (info);
if (!image.ReadPixels (info, bmp.GetPixels (), info.RowBytes, 0, 0)) {
bmp.Dispose ();
bmp = null;
}
return bmp;
}
public static SKBitmap Decode(SKCodec codec, SKImageInfo bitmapInfo)
{
if (codec == null)
{
throw new ArgumentNullException(nameof(codec));
}
// read the pixels and color table
var bitmap = new SKBitmap(bitmapInfo);
IntPtr length;
var result = codec.GetPixels(bitmapInfo, bitmap.GetPixels(out length));
if (result != SKCodecResult.Success && result != SKCodecResult.IncompleteInput)
{
bitmap.Dispose();
bitmap = null;
}
return(bitmap);
}
public BitmapHelper(string path)
{
Bitmap bitmap;
try
{
bitmap = Bitmap.Decode(File.OpenRead(path));
}
catch (Exception)
{
bitmap = new Bitmap(10, 10);
for (int i = 0; i < 10; i++)
{
for (int w = 0; w < 10; w++)
{
bitmap.SetPixel(i, w, SKColors.White);
}
}
}
IntPtr ptr = bitmap.GetPixels();
int bytes = Math.Abs(bitmap.RowBytes) * bitmap.Height;
byte[] rgbValues = new byte[bytes];
System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, bytes);
colors = new SKColor[bitmap.Width, bitmap.Height];
for (int counter = 0; counter < rgbValues.Length; counter += 4)
{
int i_am = counter / 4;
colors[i_am % bitmap.Width, i_am / bitmap.Width]
=
new SKColor(
rgbValues[counter + 2],
rgbValues[counter + 1],
rgbValues[counter + 0],
rgbValues[counter + 3]);
}
bitmap.Dispose();
}
public IBitmapImpl LoadBitmap(System.IO.Stream stream)
{
using (var s = new SKManagedStream(stream))
{
using (var codec = SKCodec.Create(s))
{
var info = codec.Info;
var bitmap = new SKBitmap(info.Width, info.Height, SKImageInfo.PlatformColorType, info.IsOpaque ? SKAlphaType.Opaque : SKAlphaType.Premul);
IntPtr length;
var result = codec.GetPixels(bitmap.Info, bitmap.GetPixels(out length));
if (result == SKCodecResult.Success || result == SKCodecResult.IncompleteInput)
{
return new BitmapImpl(bitmap);
}
else
{
throw new ArgumentException("Unable to load bitmap from provided data");
}
}
}
}
private static SKSurface CreateSurface(SKBitmap bitmap)
{
IntPtr length;
return SKSurface.Create(bitmap.Info, bitmap.GetPixels(out length), bitmap.RowBytes);
}
public static SKBitmap Decode (SKCodec codec, SKImageInfo bitmapInfo)
{
if (codec == null) {
throw new ArgumentNullException (nameof (codec));
}
// construct a color table for the decode if necessary
SKColorTable colorTable = null;
int colorCount = 0;
if (bitmapInfo.ColorType == SKColorType.Index8)
{
colorTable = new SKColorTable ();
}
// read the pixels and color table
var bitmap = new SKBitmap (bitmapInfo, colorTable);
IntPtr length;
var result = codec.GetPixels (bitmapInfo, bitmap.GetPixels (out length), colorTable, ref colorCount);
if (result != SKCodecResult.Success && result != SKCodecResult.IncompleteInput) {
bitmap.Dispose ();
bitmap = null;
}
return bitmap;
}
public override void DrawImage(ActualImage actualImage, double x, double y)
{
//create Gdi bitmap from actual image
int w = actualImage.Width;
int h = actualImage.Height;
switch (actualImage.PixelFormat)
{
case Agg.PixelFormat.ARGB32:
{
using (SKBitmap newBmp = new SKBitmap(actualImage.Width, actualImage.Height))
{
newBmp.LockPixels();
byte[] actualImgBuffer = ActualImage.GetBuffer(actualImage);
System.Runtime.InteropServices.Marshal.Copy(
actualImgBuffer,
0,
newBmp.GetPixels(),
actualImgBuffer.Length);
newBmp.UnlockPixels();
}
//newBmp.internalBmp.LockPixels();
//byte[] actualImgBuffer = ActualImage.GetBuffer(actualImage);
//System.Runtime.InteropServices.Marshal.Copy(
// actualImgBuffer,
// 0,
// newBmp.internalBmp.GetPixels(),
// actualImgBuffer.Length);
//newBmp.internalBmp.UnlockPixels();
//return newBmp;
//copy data from acutal buffer to internal representation bitmap
//using (MySkBmp bmp = MySkBmp.CopyFrom(actualImage))
//{
// _skCanvas.DrawBitmap(bmp.internalBmp, (float)x, (float)y);
//}
}
break;
case Agg.PixelFormat.RGB24:
{
}
break;
case Agg.PixelFormat.GrayScale8:
{
}
break;
default:
throw new NotSupportedException();
}
}
public static void BitmapDecoder(SKCanvas canvas, int width, int height)
{
var assembly = typeof(Demos).GetTypeInfo().Assembly;
var imageName = assembly.GetName().Name + ".color-wheel.png";
canvas.Clear(SKColors.White);
// load the embedded resource stream
using (var resource = assembly.GetManifestResourceStream(imageName))
using (var stream = new SKManagedStream(resource))
using (var codec = SKCodec.Create(stream))
using (var paint = new SKPaint())
using (var tf = SKTypeface.FromFamilyName("Arial"))
{
var info = codec.Info;
paint.IsAntialias = true;
paint.TextSize = 14;
paint.Typeface = tf;
paint.Color = SKColors.Black;
// decode the image
using (var bitmap = new SKBitmap(info.Width, info.Height, info.ColorType, info.IsOpaque ? SKAlphaType.Opaque : SKAlphaType.Premul))
{
IntPtr length;
var result = codec.GetPixels(bitmap.Info, bitmap.GetPixels(out length));
if (result == SKCodecResult.Success || result == SKCodecResult.IncompleteInput)
{
var x = 25;
var y = 25;
canvas.DrawBitmap(bitmap, x, y);
x += bitmap.Info.Width + 25;
y += 14;
canvas.DrawText(string.Format("Result: {0}", result), x, y, paint);
y += 20;
canvas.DrawText(string.Format("Size: {0}px x {1}px", bitmap.Width, bitmap.Height), x, y, paint);
y += 20;
canvas.DrawText(string.Format("Pixels: {0} @ {1}b/px", bitmap.Pixels.Length, bitmap.BytesPerPixel), x, y, paint);
}
}
}
}
