com.aspose.psd

Class ColorPaletteHelper

java.lang.Object

com.aspose.psd.ColorPaletteHelper

public final class ColorPaletteHelper
extends Object

Helper class for color palettes manipulation.

Method Summary

Modifier and Type	Method and Description
static IColorPalette	create4Bit() Creates the 4 bit color palette.
static IColorPalette	create4BitGrayscale(boolean minIsWhite) Creates the 4 bit grayscale palette.
static IColorPalette	create8Bit() Creates the 8 bit color palette.
static IColorPalette	create8BitGrayscale(boolean minIsWhite) Creates the 8 bit grayscale palette.
static IColorPalette	createMonochrome() Creates a monochrome color palette containing 2 colors only.
static IColorPalette	getCloseImagePalette(RasterImage image, int entriesCount) Gets color palette from raster image (palletizes image) in case the image does not have one.
static IColorPalette	getCloseImagePalette(RasterImage image, Rectangle destBounds, int entriesCount) Gets color palette from raster image (palletizes image) in case the image does not have one.
static IColorPalette	getCloseImagePalette(RasterImage image, Rectangle destBounds, int entriesCount, boolean useImagePalette) Gets color palette from raster image (palletizes image) in case the image does not have one.
static ColorPalette	getDownscalePalette(RasterImage image) Get 256 color palette, composed from upper bits of initial image color values.
static ColorPalette	getUniformColorPalette(RasterImage image) Get uniform 256 color palette.
static boolean	hasTransparentColors(IColorPalette palette) Determines whether the specified palette has transparent colors.

Method Detail

createMonochrome

public static IColorPalette createMonochrome()

Creates a monochrome color palette containing 2 colors only.

Returns:

Color palette for monochrome images.

create4Bit

public static IColorPalette create4Bit()

Creates the 4 bit color palette.

Returns:

The 4 bit color palette.

create4BitGrayscale

public static IColorPalette create4BitGrayscale(boolean minIsWhite)

Creates the 4 bit grayscale palette.

Parameters:

minIsWhite - if set to true the palette starts with white color, otherwise it starts with black color.

Returns:

The 4 bit grayscale palette.

create8Bit

public static IColorPalette create8Bit()

Creates the 8 bit color palette.

Returns:

The 8 bit color palette.

create8BitGrayscale

public static IColorPalette create8BitGrayscale(boolean minIsWhite)

Creates the 8 bit grayscale palette.

Parameters:

minIsWhite - if set to true the palette starts with white color, otherwise it starts with black color.

Returns:

The 8 bit grayscale palette.

getCloseImagePalette

public static IColorPalette getCloseImagePalette(RasterImage image,
                                                 int entriesCount)

Gets color palette from raster image (palletizes image) in case the image does not have one. In case palette exists it will be used instead performing calculations.

Parameters:

image - The raster image.

entriesCount - The desired entries count.

Returns:

The color palette which starts with the most frequent colors from the image and contains entriesCount entries.

getCloseImagePalette

public static IColorPalette getCloseImagePalette(RasterImage image,
                                                 Rectangle destBounds,
                                                 int entriesCount)

Gets color palette from raster image (palletizes image) in case the image does not have one. In case palette exists it will be used instead performing calculations.

Parameters:

image - The raster image.

destBounds - The destination image bounds.

entriesCount - The desired entries count.

Returns:

The color palette which starts with the most frequent colors from the image and contains entriesCount entries.

getCloseImagePalette

public static IColorPalette getCloseImagePalette(RasterImage image,
                                                 Rectangle destBounds,
                                                 int entriesCount,
                                                 boolean useImagePalette)

Gets color palette from raster image (palletizes image) in case the image does not have one. In case palette exists it will be used instead performing calculations.

Parameters:

image - The raster image.

destBounds - The destination image bounds.

entriesCount - The desired entries count.

useImagePalette - If set, it will use its own image palette if available

Returns:

The color palette which starts with the most frequent colors from the image and contains entriesCount entries.

getUniformColorPalette

public static ColorPalette getUniformColorPalette(RasterImage image)

Get uniform 256 color palette.

Parameters:

image - The image.

Returns:

The ColorPalette.

getDownscalePalette

public static ColorPalette getDownscalePalette(RasterImage image)

Get 256 color palette, composed from upper bits of initial image color values.

Parameters:

image - The image.

Returns:

The ColorPalette.

hasTransparentColors

public static boolean hasTransparentColors(IColorPalette palette)

Determines whether the specified palette has transparent colors.

Parameters:

palette - The palette.

Returns:

true if the specified palette has transparent colors; otherwise, false.

Throws:

com.aspose.ms.System.ArgumentNullException - palette is null.