ej.widget.color

Class GradientHelper

java.lang.Object

ej.widget.color.GradientHelper

public class GradientHelper
extends Object

Gradient utilities.

Since:

2.3.0

Method Summary

Modifier and Type	Method and Description
static int	blendColors(int color1, int color2, float ratio) Computes the color resulting by blending two colors with a ratio.
static int[]	createGradient(Display display, int startColor, int endColor) Creates a gradient between two colors on a display.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

blendColors

public static int blendColors(int color1,
                              int color2,
                              float ratio)

Computes the color resulting by blending two colors with a ratio.

Parameters:

color1 - the first color.

color2 - the second color.

ratio - the ratio of the second color which means the ratio of the first color is 1 - ratio. This value is clamped between 0 and 1.

Returns:

the blended color.

createGradient

public static int[] createGradient(Display display,
                                   int startColor,
                                   int endColor)

Creates a gradient between two colors on a display.

The result is an array of colors where:

• the first one is the given start color,
• the last one is the given end color,
• all colors are different.

Beware that if the given colors are identical, the result contains only one element.

Parameters:

display - the display where the gradient will be used.

startColor - the start color of the gradient.

endColor - the end color of the gradient.

Returns:

the gradient.

See Also:

Display.getDisplayColor(int)