internal static float GetAlphaFromRGBA(String value)
{
try {
return(WebColors.GetRGBAColor(value)[3]);
}
catch (Exception) {
return(1f);
}
}
/// <summary>Parses the RGBA color.</summary>
/// <param name="colorValue">the color value</param>
/// <returns>an RGBA value expressed as an array with four float values</returns>
public static float[] ParseRgbaColor(String colorValue)
{
float[] rgbaColor = WebColors.GetRGBAColor(colorValue);
if (rgbaColor == null)
{
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.COLOR_NOT_PARSED, colorValue));
rgbaColor = new float[] { 0, 0, 0, 1 };
}
return(rgbaColor);
}
/// <summary>Parses the RGBA color.</summary>
/// <param name="colorValue">the color value</param>
/// <returns>an RGBA value expressed as an array with four float values</returns>
public static float[] ParseRgbaColor(String colorValue)
{
float[] rgbaColor = WebColors.GetRGBAColor(colorValue);
if (rgbaColor == null)
{
ILog logger = LogManager.GetLogger(typeof(iText.StyledXmlParser.Css.Util.CssUtils));
logger.Error(MessageFormatUtil.Format(iText.IO.LogMessageConstant.COLOR_NOT_PARSED, colorValue));
rgbaColor = new float[] { 0, 0, 0, 1 };
}
return(rgbaColor);
}
internal static float GetAlphaFromRGBA(String value)
{
try {
return(WebColors.GetRGBAColor(value)[3]);
}
catch (IndexOutOfRangeException) {
return(1f);
}
catch (NullReferenceException) {
return(1f);
}
}
private string TransformColor(string originalColor)
{
float[] rgbaColor = WebColors.GetRGBAColor(originalColor);
float[] rgbColor = { rgbaColor[0], rgbaColor[1], rgbaColor[2] };
float[] newColorRgb = ColorBlindnessTransforms.SimulateColorBlindness(colorBlindness, rgbColor);
float[] newColorRgba = { newColorRgb[0], newColorRgb[1], newColorRgb[2], rgbaColor[3] };
double[] newColorArray = ScaleColorFloatArray(newColorRgba);
string newColorString = "rgba(" + (int)newColorArray[0] + "," + (int)newColorArray[1] + ","
+ (int)newColorArray[2] + "," + newColorArray[3] + ")";
return(newColorString);
}
/// <summary>Evaluates the rgba array of the specified stop color</summary>
/// <returns>
/// the array of 4 floats which contains the rgba value corresponding
/// to the specified stop color
/// </returns>
public virtual float[] GetStopColor()
{
float[] color = null;
String colorValue = GetAttribute(SvgConstants.Tags.STOP_COLOR);
if (colorValue != null)
{
color = WebColors.GetRGBAColor(colorValue);
}
if (color == null)
{
color = WebColors.GetRGBAColor("black");
}
return(color);
}
private string TransformColor(string originalColor)
{
// Get RGB colors values
float[] rgbaColor = WebColors.GetRGBAColor(originalColor);
float[] rgbColor = { rgbaColor[0], rgbaColor[1], rgbaColor[2] };
// Change RGB colors values to corresponding colour blindness RGB values
float[] newColourRgb = ColorBlindnessTransforms.SimulateColorBlindness(colorBlindness, rgbColor);
float[] newColourRgba = { newColourRgb[0], newColourRgb[1], newColourRgb[2], rgbaColor[3] };
// Scale and return changed color values
double[] newColorArray = ScaleColorFloatArray(newColourRgba);
string newColorString = "rgba(" + (int)newColorArray[0] + "," + (int)newColorArray[1] + ","
+ (int)newColorArray[2] + "," + newColorArray[3] + ")";
return(newColorString);
}
/* (non-Javadoc)
* @see com.itextpdf.styledxmlparser.css.validate.ICssDataTypeValidator#isValid(java.lang.String)
*/
public virtual bool IsValid(String objectString)
{
float[] rgbaColor = WebColors.GetRGBAColor(objectString);
return(rgbaColor != null);
}
