com.upokecenter.util.ColorValidator

com.upokecenter.util.ColorValidator

public final class ColorValidator extends Object

Contains methods to convert between different representations of HTML and CSS colors.

Methods

• static double[] ColorHtmlToRgba(String x)
  Converts HTML colors to Red/Green/Blue colors.
• static double[] ColorToRgb(String x)
  Converts HTML colors to Red/Green/Blue colors.
• static double[] ColorToRgba(String x)
  Not documented yet.
• static double[] HlsToRgb(double[] hls)
  Converts a color in the HLS color space to red/green/blue.
• static String RgbToColor(double[] arrayRGB)
  Converts an RGBA color to a string, either rgb(...) or rgba(...) as applicable.
• static String RgbToColorDisplay(double[] rgb)
  Converts a red-green-blue-alpha color to a string in CSS format.
• static String RgbToColorHtml(double[] rgb)
  Converts an RGBA color to an HTML color, (ex.
• static String RgbToColorHtml(double r, double g, double b)
  Converts a red-green-blue color to a string in HTML format.

Method Details

HlsToRgb

public static double[] HlsToRgb(double[] hls)

Converts a color in the HLS color space to red/green/blue.

Parameters:

• hls - Another double[] object.

Returns:

• A double[] object.

Throws:

• NullPointerException - The parameter hls is null.

ColorHtmlToRgba

public static double[] ColorHtmlToRgba(String x)

Converts HTML colors to Red/Green/Blue colors.

Parameters:

• x - A string object.

Returns:

• A double[] object.

Throws:

• NullPointerException - The parameter x is null.

ColorToRgba

public static double[] ColorToRgba(String x)

Not documented yet.

Parameters:

• x - A string object.

Returns:

• Not documented yet.

ColorToRgb

public static double[] ColorToRgb(String x)

Converts HTML colors to Red/Green/Blue colors. Use this function to parse colors from normal color picker controls: http://peteroupc.github.com/colorpicker/.

Parameters:

• x - A string object.

Returns:

• A double[] object.

RgbToColor

public static String RgbToColor(double[] arrayRGB)

Converts an RGBA color to a string, either rgb(...) or rgba(...) as applicable.

Parameters:

• arrayRGB - A double[] object.

Returns:

• A string object.

Throws:

• NullPointerException - The parameter arrayRGB is null.

RgbToColorDisplay

public static String RgbToColorDisplay(double[] rgb)

Converts a red-green-blue-alpha color to a string in CSS format.

Parameters:

• rgb - A double[] object.

Returns:

• A string object.

Throws:

• IllegalArgumentException - The parameter rgb is null or contains fewer than three elements.

• NullPointerException - The parameter rgb is null.

RgbToColorHtml

public static String RgbToColorHtml(double[] rgb)

Converts an RGBA color to an HTML color, (ex. #002233)."rgb" must contain at least 3 elements: the red, green, and blue (each 0-255).

Parameters:

• rgb - A double[] object.

Returns:

• A string object.

Throws:

• NullPointerException - The parameter rgb is null.

RgbToColorHtml

public static String RgbToColorHtml(double r, double g, double b)

Converts a red-green-blue color to a string in HTML format.

Parameters:

• r - A 64-bit floating-point number.

• g - Another 64-bit floating-point number.

• b - A 64-bit floating-point number. (3).

Returns:

• A string object.

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