com.google.zxing.client.j2se.MatrixToImageConfig Maven / Gradle / Ivy
/*
* Copyright 2012 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.j2se;
import java.awt.image.BufferedImage;
/**
* Encapsulates custom configuration used in methods of {@link MatrixToImageWriter}.
*/
public final class MatrixToImageConfig {
public static final int BLACK = 0xFF000000;
public static final int WHITE = 0xFFFFFFFF;
private final int onColor;
private final int offColor;
/**
* Creates a default config with on color {@link #BLACK} and off color {@link #WHITE}, generating normal
* black-on-white barcodes.
*/
public MatrixToImageConfig() {
this(BLACK, WHITE);
}
/**
* @param onColor pixel on color, specified as an ARGB value as an int
* @param offColor pixel off color, specified as an ARGB value as an int
*/
public MatrixToImageConfig(int onColor, int offColor) {
this.onColor = onColor;
this.offColor = offColor;
}
public int getPixelOnColor() {
return onColor;
}
public int getPixelOffColor() {
return offColor;
}
int getBufferedImageColorModel() {
if (onColor == BLACK && offColor == WHITE) {
// Use faster BINARY if colors match default
return BufferedImage.TYPE_BYTE_BINARY;
}
if (hasTransparency(onColor) || hasTransparency(offColor)) {
// Use ARGB representation if colors specify non-opaque alpha
return BufferedImage.TYPE_INT_ARGB;
}
// Default otherwise to RGB representation with ignored alpha channel
return BufferedImage.TYPE_INT_RGB;
}
private static boolean hasTransparency(int argb) {
return (argb & 0xFF000000) != 0xFF000000;
}
}