Example usage for javafx.scene.image PixelFormat isPremultiplied

Introduction

In this page you can find the example usage for javafx.scene.image PixelFormat isPremultiplied.

Prototype

public abstract boolean isPremultiplied();

Source Link

Document

Returns true iff the color components decoded (or encoded) by this format are pre-multiplied by the alpha component for more efficient blending calculations.

Usage

From source file:Main.java

/**
 * Determine the optimal BufferedImage type to use for the specified
 * {@code fxFormat} allowing for the specified {@code bimg} to be used
 * as a potential default storage space if it is not null and is compatible.
 * /*from  w  w w .jav a  2 s  .co  m*/
 * @param fxFormat the PixelFormat of the source FX Image
 * @param bimg an optional existing {@code BufferedImage} to be used
 *             for storage if it is compatible, or null
 * @return 
 */
private static int getBestBufferedImageType(PixelFormat<?> fxFormat, BufferedImage bimg) {
    if (bimg != null) {
        int bimgType = bimg.getType();
        if (bimgType == BufferedImage.TYPE_INT_ARGB || bimgType == BufferedImage.TYPE_INT_ARGB_PRE) {
            // We will allow the caller to give us a BufferedImage
            // that has an alpha channel, but we might not otherwise
            // construct one ourselves.
            // We will also allow them to choose their own premultiply
            // type which may not match the image.
            // If left to our own devices we might choose a more specific
            // format as indicated by the choices below.
            return bimgType;
        }
    }
    switch (fxFormat.getType()) {
    default:
    case BYTE_BGRA_PRE:
    case INT_ARGB_PRE:
        return BufferedImage.TYPE_INT_ARGB_PRE;
    case BYTE_BGRA:
    case INT_ARGB:
        return BufferedImage.TYPE_INT_ARGB;
    case BYTE_RGB:
        return BufferedImage.TYPE_INT_RGB;
    case BYTE_INDEXED:
        return (fxFormat.isPremultiplied() ? BufferedImage.TYPE_INT_ARGB_PRE : BufferedImage.TYPE_INT_ARGB);
    }
}

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