pdfblendmode-ag凯发旗舰厅

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com.spire.pdf.graphics
enum pdfblendmode

java.lang.object
  java.lang.enum<pdfblendmode>
      com.spire.pdf.graphics.pdfblendmode

all implemented interfaces:: java.lang.comparable<pdfblendmode>

public enum pdfblendmode
extends java.lang.enum<pdfblendmode>
extends java.lang.enum<pdfblendmode>

specifies the blend mode for transparency.

enum constant summary
`color` creates a color with the hue and saturation of the source color and the luminosity of the backdrop color.
`colorburn` darkens the backdrop color to reflect the source color.
`colordodge` brightens the backdrop color to reflect the source color.
`darken` selects the darker of the backdrop and source colors.
`difference` subtracts the darker of the two constituent colors from the lighter color.
`exclusion` produces an effect similar to that of the difference mode but lower in contrast.
`hardlight` multiplies or screens the colors, depending on the source color value.
`hue` creates a color with the hue of the source color and the saturation and luminosity of the backdrop color.
`lighten` selects the lighter of the backdrop and source colors.
`luminosity` creates a color with the luminosity of the source color and the hue and saturation of the backdrop color.
`multiply` multiplies the backdrop and source color values.
`normal` selects the source color, ignoring the backdrop.
`overlay` multiplies or screens the colors, depending on the backdrop color value.
`saturation` creates a color with the saturation of the source color and the hue and luminosity of the backdrop color.
`screen` multiplies the complements of the backdrop and source color values, then complements the result.
`softlight` darkens or lightens the colors, depending on the source color value.

method summary
`java.lang.string`	`getname()` get pdf blend mode name
`int`	`getvalue()` get pdf blend mode value

enum constant detail

normal

public static final pdfblendmode normal

selects the source color, ignoring the backdrop.

multiply

public static final pdfblendmode multiply

multiplies the backdrop and source color values. the result color is always at least as dark as either of the two constituent colors. multiplying any color with black produces black; multiplying with white leaves the original color unchanged. painting successive overlapping objects with a color other than black or white produces progressively darker colors.

screen

public static final pdfblendmode screen

multiplies the complements of the backdrop and source color values, then complements the result. the result color is always at least as light as either of the two constituent colors. screening any color with white produces white; screening with black leaves the original color unchanged. the effect is similar to projecting multiple photographic slides simultaneously onto a single screen.

overlay

public static final pdfblendmode overlay

multiplies or screens the colors, depending on the backdrop color value. source colors overlay the backdrop while preserving its highlights and shadows. the backdrop color is not replaced but is mixed with the source color to reflect the lightness or darkness of the backdrop.

darken

public static final pdfblendmode darken

selects the darker of the backdrop and source colors. the backdrop is replaced with the source where the source is darker; otherwise, it is left unchanged.

lighten

public static final pdfblendmode lighten

selects the lighter of the backdrop and source colors. the backdrop is replaced with the source where the source is lighter; otherwise, it is left unchanged.

colordodge

public static final pdfblendmode colordodge

brightens the backdrop color to reflect the source color. painting with black produces no changes.

colorburn

public static final pdfblendmode colorburn

darkens the backdrop color to reflect the source color. painting with white produces no change.

hardlight

public static final pdfblendmode hardlight

multiplies or screens the colors, depending on the source color value. the effect is similar to shining a harsh spotlight on the backdrop.

softlight

public static final pdfblendmode softlight

darkens or lightens the colors, depending on the source color value. the effect is similar to shining a diffused spotlight on the backdrop.

difference

public static final pdfblendmode difference

subtracts the darker of the two constituent colors from the lighter color. painting with white inverts the backdrop color; painting with black produces no change.

exclusion

public static final pdfblendmode exclusion

produces an effect similar to that of the difference mode but lower in contrast. painting with white inverts the backdrop color; painting with black produces no change.

hue

public static final pdfblendmode hue

creates a color with the hue of the source color and the saturation and luminosity of the backdrop color.

saturation

public static final pdfblendmode saturation

creates a color with the saturation of the source color and the hue and luminosity of the backdrop color. painting with this mode in an area of the backdrop that is a pure gray (no saturation) produces no change.

color

public static final pdfblendmode color

creates a color with the hue and saturation of the source color and the luminosity of the backdrop color. this preserves the gray levels of the backdrop and is useful for coloring monochrome images or tinting color images.

luminosity

public static final pdfblendmode luminosity

creates a color with the luminosity of the source color and the hue and saturation of the backdrop color. this produces an inverse effect to that of the color mode.

method detail

getname

public java.lang.string getname()

get pdf blend mode name

getvalue

public int getvalue()

get pdf blend mode value