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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.util;
import java.awt.Color;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.type.ColorEnum;
/**
* @author Teodor Danciu ([email protected])
*/
public final class JRColorUtil
{
public static final String EXCEPTION_MESSAGE_KEY_INVALID_COLOR = "util.color.invalid.color";
/**
*
*/
public static final int COLOR_MASK = Integer.parseInt("FFFFFF", 16);
private static final String RGB = "rgb";
public static final String RGB_PREFIX = RGB + "(";
public static final String RGBA_PREFIX = RGB + "a(";
public static final String RGBA_SUFFIX = ")";
/**
*
*/
public static String getColorHexa(Color color)
{
String hexa = Integer.toHexString(color.getRGB() & COLOR_MASK).toUpperCase();
return ("000000" + hexa).substring(hexa.length());
}
/**
*
*/
public static String getCssColor(Color color)
{
if (color.getAlpha() == 255)
{
return "#" + JRColorUtil.getColorHexa(color);
}
return
"rgba("
+ color.getRed() + ", "
+ color.getGreen() + ", "
+ color.getBlue() + ", "
+ ((float)color.getAlpha() / 255) + ")";
}
/**
*
*/
public static Color getColor(String strColor, Color defaultColor)
{
Color color = null;
if (strColor != null)
{
strColor = strColor.trim();
if (strColor.length() > 0)
{
char firstChar = strColor.charAt(0);
if (firstChar == '#')
{
color = new Color(Integer.parseInt(strColor.substring(1), 16));
}
else if ('0' <= firstChar && firstChar <= '9')
{
color = new Color(Integer.parseInt(strColor));
}
else if (
strColor.toLowerCase().startsWith(RGB)
&& strColor.endsWith(RGBA_SUFFIX)
)
{
strColor = strColor.toLowerCase();
boolean hasAlpha = false;
String prefix = null;
int numArrayLength = 0;
if (strColor.startsWith(RGBA_PREFIX))
{
hasAlpha = true;
prefix = RGBA_PREFIX;
numArrayLength = 4;
}
else if (strColor.startsWith(RGB_PREFIX))
{
hasAlpha = false;
prefix = RGB_PREFIX;
numArrayLength = 3;
}
else
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_INVALID_COLOR,
new Object[]{strColor});
}
String numStr = strColor.substring(prefix.length(), strColor.length() - RGBA_SUFFIX.length());
String[] numArray = numStr.split(",");
if (numArray == null || numArray.length != numArrayLength)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_INVALID_COLOR,
new Object[]{strColor});
}
else
{
for (int i = 0; i < numArray.length; i++)
{
numArray[i] = numArray[i].trim();
if (numArray[i].length() == 0)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_INVALID_COLOR,
new Object[]{strColor});
}
}
int red = Integer.parseInt(numArray[0]);
int green = Integer.parseInt(numArray[1]);
int blue = Integer.parseInt(numArray[2]);
if (hasAlpha)
{
float alpha = Float.parseFloat(numArray[3]);
color = new Color(red, green, blue, (int)(alpha * 255));
}
else
{
color = new Color(red, green, blue);
}
}
}
else
{
ColorEnum colorEnum = ColorEnum.getByName(strColor);
if (colorEnum == null)
{
color = defaultColor;
}
else
{
color = colorEnum.getColor();
}
}
}
}
return color;
}
public static int getOpaqueArgb(Color color, Color defaultColor) {
Color result = color == null ? defaultColor : color;
return result == null ? 0x00000000 : result.getRGB() & 0xffffffff;
}
private JRColorUtil()
{
}
}