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Added the support for the first of many image formats Orvid.Graphics will eventually be able to handle. The format is custom, and is very plain. The file essentially contains the height, and width of the image, then the pixels of the image in rgba succession. (each component is a byte) Finally, the bytes that this produces are compressed using LZMA compression, producing a very basic, but usable format. Next will be an animated version, as well as support for animated images in the library.

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blah38621_cp 2011-08-01 02:19:23 +00:00
parent 00d5ff7d60
commit 9d52d175e0
5 changed files with 151 additions and 10 deletions
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27
source2/Users/Orvid/Orvid.Graphics/ImageFormats/ImageFormat.cs Normal file
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@ -0,0 +1,27 @@
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace Orvid.Graphics.ImageFormats
{
/// <summary>
/// This class represents any Image format,
/// and should be the base type for all drivers.
/// </summary>
public abstract class ImageFormat
{
/// <summary>
/// Save an image to the specified stream.
/// </summary>
/// <param name="i">The image to save.</param>
/// <param name="dest">The Stream to write to.</param>
public abstract void Save(Image i, Stream dest);
/// <summary>
/// Load an image from the specified stream.
/// </summary>
/// <param name="s">The Stream to load from.</param>
/// <returns>The loaded Image.</returns>
public abstract Image Load(Stream s);
}
}

98
source2/Users/Orvid/Orvid.Graphics/ImageFormats/OIFSupport.cs Normal file
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@ -0,0 +1,98 @@
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace Orvid.Graphics.ImageFormats
{
public class OIFSupport : ImageFormat
{
public override void Save(Image i, System.IO.Stream dest)
{
MemoryStream m = new MemoryStream();
m.WriteByte(0);
#warning Change this next byte to 255 if you update Image with UInt64 for width and height.
m.WriteByte(0);
m.WriteByte(0);
m.WriteByte(0); // Write the 8 empty bytes at the start of the file.
m.WriteByte(0);
m.WriteByte(0);
m.WriteByte(0);
m.WriteByte(0);
byte[] dat = BitConverter.GetBytes(i.Height); // Write the height.
m.Write(dat, 0, dat.Length);
dat = BitConverter.GetBytes(i.Width); // Write the width.
m.Write(dat, 0, dat.Length);
// Now to write the actual data.
Pixel p;
for (uint x = 0; x < i.Width; x++)
{
for (uint y = 0; y < i.Height; y++)
{
p = i.GetPixel(x, y);
m.WriteByte(p.R);
m.WriteByte(p.G);
m.WriteByte(p.B);
m.WriteByte(p.A);
}
}
dat = Orvid.Compression.LZMA.Compress(m.GetBuffer());
dest.WriteByte(255);
dest.Write(dat, 0, dat.Length);
}
private UInt32 ReadUInt32(byte[] data)
{
UInt32 r = 0;
r += data[3];
r <<= 8;
r += data[2];
r <<= 8;
r += data[1];
r <<= 8;
r += data[0];
return r;
}
public override Image Load(System.IO.Stream s)
{
if (s.ReadByte() == 255)
{
byte[] buf = new byte[s.Length - 1];
s.Read(buf, 0, buf.Length);
s = new MemoryStream(Orvid.Compression.LZMA.Decompress(buf));
}
else
{
s.Position = 0;
}
byte[] tmp = new byte[8];
s.Read(tmp, 0, 8); // skip the 8 empty bytes at the start of the file.
tmp = new byte[4];
s.Read(tmp, 0, 4);
uint Height = ReadUInt32(tmp); // Read the Height.
s.Read(tmp, 0, 4);
uint Width = ReadUInt32(tmp); // Read the Width.
Image i = new Image((int)Width, (int)Height);
byte r, g, b, a;
for (uint x = 0; x < Width; x++)
{
for (uint y = 0; y < Height; y++)
{
r = (byte)s.ReadByte();
g = (byte)s.ReadByte();
b = (byte)s.ReadByte();
a = (byte)s.ReadByte();
i.SetPixel(x, y, new Pixel(r, g, b, a));
}
}
return i;
}
}
}

2
source2/Users/Orvid/Orvid.Graphics/Orvid.Graphics.csproj
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@ -52,6 +52,8 @@
<SubType>Code</SubType>
</Compile>
<Compile Include="Image.cs" />
<Compile Include="ImageFormats\ImageFormat.cs" />
<Compile Include="ImageFormats\OIFSupport.cs" />
<Compile Include="Monitor.cs" />
<Compile Include="OForms\OControl.cs" />
<Compile Include="OForms\Windows\OWindow.cs" />

7
source2/Users/Orvid/Orvid.Graphics/Shapes/ShapedImage.cs
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@ -17,7 +17,12 @@ namespace Orvid.Graphics.Shapes
{
if (Modified)
{
this.Clear(new Pixel(true));
foreach (Shape s in Shapes)
{
s.Draw();
}
this.Modified = false;
}
return this;
}

27
source2/Users/Orvid/Orvid.Graphics/Shapes/Square.cs
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@ -7,7 +7,7 @@ namespace Orvid.Graphics.Shapes
public class Square : Shape
{
private Image i;
private Pixel fillColor = new Pixel(255, 255, 255, 0); // Initialize white.
private Pixel fillColor = new Pixel(255, 255, 255, 255); // Initialize white.
public Pixel FillColor
{
get
@ -16,11 +16,14 @@ namespace Orvid.Graphics.Shapes
}
set
{
Modified = true;
fillColor = value;
if (fillColor != value)
{
Modified = true;
fillColor = value;
}
}
}
private Pixel borderColor = new Pixel(0, 0, 0, 0); // Initialize black.
private Pixel borderColor = new Pixel(0, 0, 0, 255); // Initialize black.
public Pixel BorderColor
{
get
@ -29,8 +32,11 @@ namespace Orvid.Graphics.Shapes
}
set
{
Modified = true;
borderColor = value;
if (borderColor != value)
{
Modified = true;
borderColor = value;
}
}
}
private int size;
@ -42,9 +48,12 @@ namespace Orvid.Graphics.Shapes
}
set
{
Modified = true;
size = value;
i = new Image(this.Size, this.Size);
if (size != value)
{
Modified = true;
size = value;
i = new Image(this.Size, this.Size);
}
}
}