Alpha channel is not properly parsed in Avalonia 11-preview-1 about svg.skia HOT 4 CLOSED

https://www.w3.org/TR/2008/REC-CSS2-20080411/syndata.html#color-units

The format of an RGB value in hexadecimal notation is a '#' immediately followed by either three or six hexadecimal characters. The three-digit RGB notation (#rgb) is converted into six-digit form (#rrggbb) by replicating digits, not by adding zeros. For example, #fb0 expands to #ffbb00. This ensures that white (#ffffff) can be specified with the short notation (#fff) and removes any dependencies on the color depth of the display.

There is fill-opacity and stroke-opacity https://www.w3.org/TR/SVG11/painting.html

from svg.skia.

aarrggbb formats are valid in avalonia so this is the reason I was using that way. I can workaround removing that alpha channel before sending it to SVG.Skia.

The reason I reported it is because I'm previous SVG.Skia it worked fine.

from svg.skia.

aarrggbb formats are valid in avalonia so this is the reason I was using that way. I can workaround removing that alpha channel before sending it to SVG.Skia.

The reason I reported it is because I'm previous SVG.Skia it worked fine.

There have been many changes in the parsing code for Color and some issues with Microsoft deprecating System.Drawing cross-platform support so it might have changed. There are are some gray areas in svg standard compliance, not sure we can make it work here.

from svg.skia.

I place here my workaround for reference:

            static string GetIconForegroundColor(ThemeBrushes.Name color)
            {
                ISolidColorBrush result = (ISolidColorBrush)ThemeBrushes.GetBrush(color);
                return RemoveAlpha(result.Color.ToString());
            }

            static string RemoveAlpha(string hexColor)
            {
                // #aarrggb colors are not supported anymore in Svg.Skia
                // so we need to remove the alpha part here
                // https://github.com/wieslawsoltes/Svg.Skia/issues/118
                if (hexColor.Length != 9 || !hexColor.ToLowerInvariant().StartsWith("#ff"))
                    return hexColor;

                return stackalloc char[]
                {
                    '#',
                    hexColor[3], hexColor[4],
                    hexColor[5], hexColor[6],
                    hexColor[7], hexColor[8]
                }.ToString();
            }

from svg.skia.