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Modified the Quantizer to Xiaolin Wu's, updated the BitmapBuffer to support 8BPP but you still need to know what to call.... (needs some additional refactoring)

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git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@1712 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
This commit is contained in:
RKrom 2012-03-20 15:53:50 +00:00
parent 3250eee533
commit b464480bf6
7 changed files with 101 additions and 726 deletions
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53
GreenshotPlugin/Core/BitmapBuffer.cs
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@ -136,7 +136,7 @@ namespace GreenshotPlugin.Core {
// Set "this" rect to location 0,0
// as the Cloned Bitmap is only the part we want to work with
this.rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
} else if (!ImageHelper.SupportsPixelFormat(sourceBmp)) {
} else if (!ImageHelper.SupportsPixelFormat(sourceBmp) && PixelFormat.Format8bppIndexed != sourceBmp.PixelFormat) {
throw new ArgumentException("Unsupported pixel format: " + sourceBmp.PixelFormat + " set clone to true!");
} else {
this.bitmap = sourceBmp;
@ -268,11 +268,36 @@ namespace GreenshotPlugin.Core {
Lock();
}
}
/**
* Retrieve the color at location x,y
* Before the first time this is called the Lock() should be called once!
*/
/// <summary>
/// Retrieve the color index, for 8BPP, at location x,y
/// </summary>
/// <param name="x">X coordinate</param>
/// <param name="y">Y Coordinate</param>
/// <returns>index</returns>
public byte GetColorIndexAt(int x, int y) {
int offset = x*bytesPerPixel+y*stride;
return pointer[offset];
}
/// <summary>
/// Set the color index, for 8BPP, at location x,y
/// </summary>
/// <param name="x">X coordinate</param>
/// <param name="y">Y Coordinate</param>
/// <param name="color">Color index to set</param>
public void SetColorIndexAt(int x, int y, byte color) {
int offset = x * bytesPerPixel + y * stride;
pointer[offset] = color;
}
/// <summary>
/// Retrieve the color at location x,y
/// Before the first time this is called the Lock() should be called once!
/// </summary>
/// <param name="x">X coordinate</param>
/// <param name="y">Y Coordinate</param>
/// <returns>Color</returns>
public Color GetColorAt(int x, int y) {
if(x>=0 && y>=0 && x<rect.Width && y<rect.Height) {
int offset = x*bytesPerPixel+y*stride;
@ -282,11 +307,14 @@ namespace GreenshotPlugin.Core {
return Color.Empty;
}
}
/**
* Retrieve the color at location x,y
* Before the first time this is called the Lock() should be called once!
*/
/// <summary>
/// Retrieve the color, without alpha, at location x,y
/// Before the first time this is called the Lock() should be called once!
/// </summary>
/// <param name="x">X coordinate</param>
/// <param name="y">Y Coordinate</param>
/// <returns>Color</returns>
public Color GetColorAtWithoutAlpha(int x, int y) {
if(x>=0 && y>=0 && x<rect.Width && y<rect.Height) {
int offset = x*bytesPerPixel+y*stride;
@ -393,6 +421,9 @@ namespace GreenshotPlugin.Core {
rIndex = 2;
bytesPerPixel = 3;
break;
case PixelFormat.Format8bppIndexed:
bytesPerPixel = 1;
break;
default:
throw new FormatException("Bitmap.Pixelformat."+bitmap.PixelFormat+" is currently not supported. Supported: Format32bpp(A)Rgb, Format24bppRgb");
}