private void Validate()
{
if (Size.Width == 0 && Size.Height == 0)
{
Size = new Size(256, 256);
}
else if (Size.Width == 0)
{
Size = new Size(256, Size.Height);
}
else if (Size.Height == 0 && ParentIcon.Type == IconType.Icon)
{
Size = new Size(Size.Width, 256);
}
if (ParentIcon.Type == IconType.Icon && ColorCount > 0 && BitCount == 0
) // this regularly happens, so let's fix it
{
BitCount = (ushort)Math.Log(
ColorCount,
2
); // but it only works when ColorCount > 0 which doesn't apply to 16, 24, and 32-bit icons
}
if (BitCount == 0)
{
// get it from the ImageData, which is painful
// IconPro does it in AdjustIconImagePointers
// it casts the raw image data as BMP then reads in the DIB headers
// but this wouldn't work for PNG-format icons
// so check for the PNG header first
if (PngImageResourceData.HasPngSignature(ImageData))
{
BitCount = 32; // I know you can get non-32-bit PNGs, but meh
}
else
{
var dib = new Dib(ImageData);
BitCount = (ushort)dib.BitCount;
}
}
Description = string.Format(
CultureInfo.InvariantCulture,
"{0}x{1} {2}-bit",
Size.Width,
Size.Height,
BitCount
);
}
/// <summary>Tests the ResourceData type as specified by the hint. If it works it returns a ResourceData. If it fails it returns null.</summary>
private static ResourceData Heuristic(ResourceLang lang, ResourceHint hint, Byte[] rawData)
{
// try the hint's suggestion, if it doesn't fall-back on the tried 'n' true brute-force approach
ResourceData rd;
switch (hint)
{
#region Image
case ResourceHint.Bitmap:
if (BmpImageResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
case ResourceHint.Gif:
if (GifImageResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
case ResourceHint.Jpeg:
if (JpegImageResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
case ResourceHint.Png:
if (PngImageResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
#endregion
#region Directory
case ResourceHint.CursorDirectory:
if (CursorDirectoryResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
case ResourceHint.IconDirectory:
if (IconDirectoryResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
#endregion
// experiment:
case ResourceHint.IconImage:
if (IconImageResourceData.TryCreate(lang, rawData, out rd))
{
return(rd);
}
break;
/* case Win32ResourceType.CursorImage:
* case Win32ResourceType.IconImage:
*
* retval = new IconCursorImageResourceData(lang, rawData);
* break;
*
* // case Win32ResourceType.CursorAnimated: // I have zero documentation on these 'animated' types
* // case Win32ResourceType.IconAnimated:
* case Win32ResourceType.CursorDirectory:
* case Win32ResourceType.IconDirectory:
*
* retval = new IconCursorDirectoryResourceData(lang, rawData);
* break;
*
* case Win32ResourceType.Manifest:
*
* retval = new XmlHtmlResourceData(lang, rawData);
* break;
*
* case Win32ResourceType.Version:
*
* retval = new VersionResourceData(lang, rawData);
* break;
*/
}
return(null);
}
