org.apache.xmlgraphics.image.loader.impl.ImageRawPNG Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
/* $Id: ImageRawPNG.java 1732019 2016-02-24 05:01:10Z gadams $ */
// Original author: Matthias Reichenbacher
package org.apache.xmlgraphics.image.loader.impl;
import java.awt.Color;
import java.awt.color.ColorSpace;
import java.awt.color.ICC_Profile;
import java.awt.image.ColorModel;
import java.io.InputStream;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageInfo;
public class ImageRawPNG extends ImageRawStream {
private ColorModel cm;
private ICC_Profile iccProfile;
private int bitDepth;
private boolean isTransparent;
private int grayTransparentAlpha;
private int redTransparentAlpha;
private int greenTransparentAlpha;
private int blueTransparentAlpha;
private int renderingIntent = -1;
/**
* Main constructor.
* @param info the image info object
* @param in the ImageInputStream with the raw content
* @param colorModel the color model
* @param bitDepth the bit depth
* @param iccProfile an ICC color profile or null if no profile is associated
*/
public ImageRawPNG(ImageInfo info, InputStream in, ColorModel colorModel, int bitDepth, ICC_Profile iccProfile) {
super(info, ImageFlavor.RAW_PNG, in);
this.iccProfile = iccProfile;
this.cm = colorModel;
this.bitDepth = bitDepth;
}
/**
* The bit depth of each color channel.
* @return the bit depth of one channel (same for all)
*/
public int getBitDepth() {
return bitDepth;
}
/**
* Returns the ICC color profile if one is associated with the PNG image.
* @return the ICC color profile or null if there's no profile
*/
public ICC_Profile getICCProfile() {
return this.iccProfile;
}
/**
* Returns the image's color model.
* @return the color model
*/
public ColorModel getColorModel() {
return this.cm;
}
/**
* Returns the image's color space.
* @return the color space
*/
public ColorSpace getColorSpace() {
return this.cm.getColorSpace();
}
/**
* Sets the gray transparent pixel value.
* @param gray the transparent pixel gray value (0...255)
*/
protected void setGrayTransparentAlpha(int gray) {
this.isTransparent = true;
this.grayTransparentAlpha = gray;
}
/**
* Sets the RGB transparent pixel values.
* @param red the transparent pixel red value (0...255)
* @param green the transparent pixel green value (0...255)
* @param blue the transparent pixel blue value (0...255)
*/
protected void setRGBTransparentAlpha(int red, int green, int blue) {
this.isTransparent = true;
this.redTransparentAlpha = red;
this.greenTransparentAlpha = green;
this.blueTransparentAlpha = blue;
}
/**
* Used to flag image as transparent when the image is of pallete type.
*/
protected void setTransparent() {
this.isTransparent = true;
}
/**
* Whether the image is transparent (meaning there is a transparent pixel)
* @return true if transparent pixel exists
*/
public boolean isTransparent() {
return this.isTransparent;
}
/**
* The color of the transparent pixel.
* @return the color of the transparent pixel.
*/
public Color getTransparentColor() {
Color color = null;
if (!this.isTransparent) {
return color;
}
if (cm.getNumColorComponents() == 3) {
color = new Color(this.redTransparentAlpha, this.greenTransparentAlpha, this.blueTransparentAlpha);
} else {
color = new Color(this.grayTransparentAlpha, 0, 0);
}
return color;
}
/**
* Used to set the rendering intent when the color space is sRGB.
* @param intent the rendering intent of the sRGB color space
*/
public void setRenderingIntent(int intent) {
renderingIntent = intent;
}
/**
* Returns the rendering intent of the sRGB color space.
* @return the rendering intent
*/
public int getRenderingIntent() {
return this.renderingIntent;
}
}