public void ColorAlpha()
{
var bmp = new SimplePngImage(2, 3);
Assert.Equal(2, bmp.Width);
Assert.Equal(3, bmp.Height);
bmp.SetPixel(0, 0, Color.Red);
bmp.SetPixel(0, 1, Color.Green);
bmp.SetPixel(0, 2, Color.Blue);
bmp.SetPixel(1, 0, Color.White);
bmp.SetPixel(1, 1, Color.Black);
bmp.SetPixel(1, 2, Color.FromArgb(128, Color.Purple));
Assert.Equal(Color.Red, bmp.GetPixel(0, 0));
Assert.Equal(Color.Green, bmp.GetPixel(0, 1));
Assert.Equal(Color.Blue, bmp.GetPixel(0, 2));
Assert.Equal(Color.White, bmp.GetPixel(1, 0));
Assert.Equal(Color.Black, bmp.GetPixel(1, 1));
Assert.Equal(Color.FromArgb(128, Color.Purple), bmp.GetPixel(1, 2));
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-color-transparency.png"));
var memStream = new MemoryStream();
bmp.Save(memStream);
Assert.Equal(80, memStream.Length);
Assert.Equal("89504E470D0A1A0A0000000D4948445200000002000000030806000000B9EADE810000001749444154789C63F8CFC0F01F0418181A18800404FF6F6068680000700275140000000049454E44AE426082",
BitConverter.ToString(memStream.ToArray()).Replace("-", ""));
}
public void SaveOpen32()
{
var bmp = new SimplePngImage(2, 3);
bmp.SetPixel(0, 0, Color.Red);
bmp.SetPixel(0, 1, Color.Green);
bmp.SetPixel(0, 2, Color.Blue);
bmp.SetPixel(1, 0, Color.White);
bmp.SetPixel(1, 1, Color.Black);
bmp.SetPixel(1, 2, Color.FromArgb(128, Color.Purple));
var memStream = new MemoryStream();
bmp.Save(memStream);
memStream.Position = 0;
var bmp2 = new SimplePngImage(memStream);
Assert.Equal(Color.Red.ToArgb(), bmp2.GetPixel(0, 0).ToArgb());
Assert.Equal(Color.Green.ToArgb(), bmp2.GetPixel(0, 1).ToArgb());
Assert.Equal(Color.Blue.ToArgb(), bmp2.GetPixel(0, 2).ToArgb());
Assert.Equal(Color.White.ToArgb(), bmp2.GetPixel(1, 0).ToArgb());
Assert.Equal(Color.Black.ToArgb(), bmp2.GetPixel(1, 1).ToArgb());
Assert.Equal(Color.FromArgb(128, Color.Purple).ToArgb(), bmp2.GetPixel(1, 2).ToArgb());
}
public void Clone()
{
var original = new SimplePngImage(2, 3);
original.SetPixel(0, 0, Color.Red);
original.SetPixel(0, 1, Color.Green);
original.SetPixel(0, 2, Color.Blue);
original.SetPixel(1, 0, Color.White);
original.SetPixel(1, 1, Color.Black);
original.SetPixel(1, 2, Color.Purple);
var bmp = original.Clone();
original.SetPixel(1, 2, Color.Cyan);
Assert.Equal(Color.Red, bmp.GetPixel(0, 0));
Assert.Equal(Color.Green, bmp.GetPixel(0, 1));
Assert.Equal(Color.Blue, bmp.GetPixel(0, 2));
Assert.Equal(Color.White, bmp.GetPixel(1, 0));
Assert.Equal(Color.Black, bmp.GetPixel(1, 1));
Assert.Equal(Color.Purple, bmp.GetPixel(1, 2));
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-clone.png"));
var memStream = new MemoryStream();
bmp.Save(memStream);
Assert.Equal(76, memStream.Length);
Assert.Equal("89504E470D0A1A0A0000000D4948445200000002000000030802000000368849D60000001349444154789C63F8CFC0F0FF3F9068608080FF0D0C0D00D6C212940000000049454E44AE426082",
BitConverter.ToString(memStream.ToArray()).Replace("-", ""));
}
public void ValidateMono256(string fileName)
{
var bmpOriginal = GetExampleImageMonochrome256();
var bmp = new SimplePngImage(GetResourceStreamBytes(fileName));
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-" + fileName));
Assert.True(AreImagesSame(bmp, bmpOriginal));
}
private static SimplePngImage GetExampleImageColor2()
{
var bmp = new SimplePngImage(8, 8);
for (var x = 0; x < 8; x++)
{
for (var y = 0; y < 8; y++)
{
bmp.SetPixel(x, y, (x % 2 == y % 2) ? Color.Red : Color.Blue);
}
}
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-color-2.png"));
return(bmp);
}
private static SimplePngImage GetExampleImageMonochrome256()
{
var bmp = new SimplePngImage(16, 16);
for (var x = 0; x < 16; x++)
{
for (var y = 0; y < 16; y++)
{
var m = x << 4 | y;
bmp.SetPixel(x, y, Color.FromArgb(m, m, m));
}
}
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-mono-256.png"));
return(bmp);
}
private static SimplePngImage GetExampleImageColor256()
{
var bmp = new SimplePngImage(16, 16);
for (var x = 0; x < 16; x++)
{
for (var y = 0; y < 16; y++)
{
var r = (byte)((15 - x) * 16);
var g = (byte)(y * 16);
var b = (byte)(((x * 16) & 0xF0) | ((y * 16) >> 4));
bmp.SetPixel(x, y, Color.FromArgb(r, g, b));
}
}
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-color-256.png"));
return(bmp);
}
private static SimplePngImage GetExampleImageColor64()
{
var bmp = new SimplePngImage(8, 8);
for (var x = 0; x < 8; x++)
{
for (var y = 0; y < 8; y++)
{
var r = (byte)((7 - x) * 32);
var g = (byte)(y * 32);
var b = (byte)(((x * 32) & 0xF0) | ((y * 32) >> 4));
bmp.SetPixel(x, y, Color.FromArgb(r, g, b));
}
}
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-color-64.png"));
return(bmp);
}
private static bool AreImagesSame(SimplePngImage image1, SimplePngImage image2)
{
if (image1.Width != image2.Width)
{
return(false);
}
if (image1.Height != image2.Height)
{
return(false);
}
for (var x = 0; x < image1.Width; x++)
{
for (var y = 0; y < image1.Height; y++)
{
if (image1.GetPixel(x, y).ToArgb() != image2.GetPixel(x, y).ToArgb())
{
return(false);
}
}
}
return(true);
}
public void MonoAlpha()
{
var bmp = new SimplePngImage(2, 2);
Assert.Equal(2, bmp.Width);
Assert.Equal(2, bmp.Height);
bmp.SetPixel(0, 0, Color.Black);
bmp.SetPixel(0, 1, Color.DarkGray);
bmp.SetPixel(1, 0, Color.Gray);
bmp.SetPixel(1, 1, Color.FromArgb(192, Color.White));
Assert.Equal(Color.Black, bmp.GetPixel(0, 0));
Assert.Equal(Color.DarkGray, bmp.GetPixel(0, 1));
Assert.Equal(Color.Gray, bmp.GetPixel(1, 0));
Assert.Equal(Color.FromArgb(192, Color.White), bmp.GetPixel(1, 1));
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-mono-transparency.png"));
var memStream = new MemoryStream();
bmp.Save(memStream);
Assert.Equal(71, memStream.Length);
Assert.Equal("89504E470D0A1A0A0000000D4948445200000002000000020804000000D8BFC5AF0000000E49444154789C6360F8DFF09F61E5FFFF0700F55FDCD50000000049454E44AE426082",
BitConverter.ToString(memStream.ToArray()).Replace("-", ""));
}
public void MonoBasic()
{
var bmp = new SimplePngImage(2, 2);
Assert.Equal(2, bmp.Width);
Assert.Equal(2, bmp.Height);
bmp.SetPixel(0, 0, Color.Black);
bmp.SetPixel(0, 1, Color.DarkGray);
bmp.SetPixel(1, 0, Color.Gray);
bmp.SetPixel(1, 1, Color.White);
Assert.Equal(Color.Black, bmp.GetPixel(0, 0));
Assert.Equal(Color.DarkGray, bmp.GetPixel(0, 1));
Assert.Equal(Color.Gray, bmp.GetPixel(1, 0));
Assert.Equal(Color.White, bmp.GetPixel(1, 1));
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-mono-basic.png"));
var memStream = new MemoryStream();
bmp.Save(memStream);
Assert.Equal(67, memStream.Length);
Assert.Equal("89504E470D0A1A0A0000000D494844520000000200000002080000000057DD52F80000000A49444154789C6360686058F91F00384FDB7F0000000049454E44AE426082",
BitConverter.ToString(memStream.ToArray()).Replace("-", ""));
}
private static SimplePngImage GetExampleImageColor4()
{
var bmp = new SimplePngImage(8, 8);
for (var x = 0; x < 2; x++)
{
for (var y = 0; y < 2; y++)
{
var r = (byte)((7 - x) * 129);
var g = (byte)(y * 128);
var b = (byte)(((x * 128) & 0xF0) | ((y * 128) >> 4));
for (var i = 0; i < 4; i++)
{
for (var j = 0; j < 4; j++)
{
bmp.SetPixel(x * 4 + i, y * 4 + j, Color.FromArgb(r, g, b));
}
}
}
}
//bmp.Save(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "png-color-4.png"));
return(bmp);
}
