public void ThirtyTwoBitMaskBufferIsCopied()
{
var buffer = new byte[]
{
0, 0, 255, 255,
255, 0, 0, 255,
0, 0, 255, 255,
255, 0, 0, 255,
0, 0, 255, 255,
255, 0, 0, 255,
0, 0, 255, 255,
255, 0, 0, 255
};
var bounds = new SKRectI(0, 0, 4, 2);
UInt32 rowBytes = 16;
var format = SKMaskFormat.Argb32;
var mask = SKMask.Create(buffer, bounds, rowBytes, format);
var red = SKColors.Red;
var blue = SKColors.Blue;
Assert.Equal((uint)red, mask.GetAddr32(0, 0));
Assert.Equal((uint)blue, mask.GetAddr32(1, 0));
Assert.Equal((uint)red, mask.GetAddr32(2, 0));
Assert.Equal((uint)blue, mask.GetAddr32(3, 0));
Assert.Equal((uint)red, mask.GetAddr32(0, 1));
Assert.Equal((uint)blue, mask.GetAddr32(1, 1));
Assert.Equal((uint)red, mask.GetAddr32(2, 1));
Assert.Equal((uint)blue, mask.GetAddr32(3, 1));
mask.FreeImage();
}
public void MonochromeMaskBufferIsCopied()
{
byte rawMask = 1 << 7 | 0 << 6 | 0 << 5 | 1 << 4 | 1 << 3 | 0 << 2 | 1 << 1 | 1;
var buffer = new byte[] { rawMask };
var bounds = new SKRectI(0, 0, 8, 1);
UInt32 rowBytes = 1;
var format = SKMaskFormat.BW;
var mask = SKMask.Create(buffer, bounds, rowBytes, format);
Assert.Equal(rawMask, mask.GetAddr1(0, 0));
mask.FreeImage();
}
public unsafe void FixedImageMaskIsHandledCorrectly()
{
byte rawMask = 1 << 7 | 0 << 6 | 0 << 5 | 1 << 4 | 1 << 3 | 0 << 2 | 1 << 1 | 1;
var buffer = new byte[] { rawMask };
var bounds = new SKRectI(0, 0, 8, 1);
UInt32 rowBytes = 1;
var format = SKMaskFormat.BW;
var mask = SKMask.Create(buffer, bounds, rowBytes, format);
Assert.Equal(rawMask, mask.GetAddr1(0, 0));
mask.FreeImage();
}
public void AlphaMaskIsApplied()
{
var srcInfo = new SKImageInfo(4, 4);
var srcBmp = new SKBitmap(srcInfo);
srcBmp.Erase(SKColors.Red);
var pixels = srcBmp.Pixels;
foreach (var pixel in pixels)
{
Assert.AreEqual(255, pixel.Alpha);
}
var maskBuffer = new byte[]
{
128, 127, 126, 125,
101, 102, 103, 104,
96, 95, 94, 93,
72, 73, 74, 75
};
var bounds = new SKRectI(0, 0, 4, 4);
uint rowBytes = 4;
var format = SKMaskFormat.A8;
var mask = SKMask.Create(maskBuffer, bounds, rowBytes, format);
srcBmp.InstallMaskPixels(mask);
pixels = srcBmp.Pixels;
Assert.AreEqual(128, pixels[0].Alpha);
Assert.AreEqual(127, pixels[1].Alpha);
Assert.AreEqual(126, pixels[2].Alpha);
Assert.AreEqual(125, pixels[3].Alpha);
Assert.AreEqual(101, pixels[4].Alpha);
Assert.AreEqual(102, pixels[5].Alpha);
Assert.AreEqual(103, pixels[6].Alpha);
Assert.AreEqual(104, pixels[7].Alpha);
Assert.AreEqual(96, pixels[8].Alpha);
Assert.AreEqual(95, pixels[9].Alpha);
Assert.AreEqual(94, pixels[10].Alpha);
Assert.AreEqual(93, pixels[11].Alpha);
Assert.AreEqual(72, pixels[12].Alpha);
Assert.AreEqual(73, pixels[13].Alpha);
Assert.AreEqual(74, pixels[14].Alpha);
Assert.AreEqual(75, pixels[15].Alpha);
mask.FreeImage();
}
public void Alpha8MaskBufferIsCopied()
{
var buffer = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var bounds = new SKRectI(0, 0, 4, 2);
UInt32 rowBytes = 4;
var format = SKMaskFormat.A8;
var mask = SKMask.Create(buffer, bounds, rowBytes, format);
Assert.Equal(buffer[0], mask.GetAddr8(0, 0));
Assert.Equal(buffer[1], mask.GetAddr8(1, 0));
Assert.Equal(buffer[2], mask.GetAddr8(2, 0));
Assert.Equal(buffer[3], mask.GetAddr8(3, 0));
Assert.Equal(buffer[4], mask.GetAddr8(0, 1));
Assert.Equal(buffer[5], mask.GetAddr8(1, 1));
Assert.Equal(buffer[6], mask.GetAddr8(2, 1));
Assert.Equal(buffer[7], mask.GetAddr8(3, 1));
mask.FreeImage();
}
public void AutoMaskFreeImageReleasesMemory()
{
byte rawMask = 1 << 7 | 0 << 6 | 0 << 5 | 1 << 4 | 1 << 3 | 0 << 2 | 1 << 1 | 1;
var buffer = new byte[] { rawMask };
var bounds = new SKRectI(0, 0, 8, 1);
UInt32 rowBytes = 1;
var format = SKMaskFormat.BW;
var mask = new SKMask(bounds, rowBytes, format);
var size = mask.ComputeTotalImageSize();
mask.Image = SKMask.AllocateImage(size);
Marshal.Copy(buffer, 0, mask.Image, (int)size);
using (new SKAutoMaskFreeImage(mask.Image))
{
Assert.Equal(rawMask, mask.GetAddr1(0, 0));
}
}