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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* PropertiesFile.java
* ---------------
*/
package org.jpedal.examples.viewer.utils;
import java.awt.Color;
import java.util.StringTokenizer;
import org.jpedal.utils.LogWriter;
public class CSSToJavaValues {
/**
* Accepts a valid CSS1 color value and return a Color object.
* @param cssValue A string representation of a valid CSS1 color string
* @return A color object or null if string was null, empty or not valid css
*/
public static Color convertToColor(String cssValue){
Color col = null;
if (cssValue != null && !cssValue.isEmpty()) {
if (cssValue.startsWith("#")) {
//Handle hex values
col = Color.decode(cssValue);
} else {
if (cssValue.startsWith("rgb")) {
col = handleRGBColor(cssValue);
} else {
col = handleNamedColor(cssValue.toLowerCase());
}
}
}
return col;
}
private static Color handleRGBColor(String cssValue){
//Handle rgb values
String rgbValues = cssValue.substring(cssValue.indexOf('(') + 1, cssValue.indexOf(')'));
StringTokenizer rgbTokens = new StringTokenizer(rgbValues, " ,");
int r, g, b;
int a = 255;
if (rgbValues.contains("%")) {
r = (int) (255 * (Float.parseFloat(rgbTokens.nextToken().replace("%", "")) / 100));
g = (int) (255 * (Float.parseFloat(rgbTokens.nextToken().replace("%", "")) / 100));
b = (int) (255 * (Float.parseFloat(rgbTokens.nextToken().replace("%", "")) / 100));
if (rgbTokens.hasMoreTokens()) {
a = (int) (255 * Float.parseFloat(rgbTokens.nextToken()));
}
return new Color(r, g, b, a);
} else {
r = Integer.parseInt(rgbTokens.nextToken());
g = Integer.parseInt(rgbTokens.nextToken());
b = Integer.parseInt(rgbTokens.nextToken());
if (rgbTokens.hasMoreTokens()) {
a = (int) (255 * Float.parseFloat(rgbTokens.nextToken()));
}
return new Color(r, g, b, a);
}
}
private static Color handleNamedColor(String cssValue) {
switch (cssValue.charAt(0)) {
case 'a':
//aqua
return new Color(0, 255, 255);
case 'b':
if (cssValue.charAt(2) == 'a') {
//black
return new Color(0, 0, 0);
} else {
//blue
return new Color(0, 0, 255);
}
case 'f':
//fuchisa
return new Color(255, 0, 255);
case 'g':
if (cssValue.charAt(2) == 'a') {
//gray
return new Color(128, 128, 128);
} else {
//green
return new Color(0, 128, 0);
}
case 'l':
//lime
return new Color(0, 255, 0);
case 'm':
//maroon
return new Color(128, 0, 0);
case 'n':
//navy
return new Color(0, 0, 128);
case 'o':
//olive
return new Color(128, 128, 0);
case 'p':
//purple
return new Color(128, 0, 128);
case 'r':
//red
return new Color(255, 0, 0);
case 's':
//silver
return new Color(192, 192, 192);
case 't':
//teal
return new Color(0, 128, 128);
case 'w':
//white
return new Color(255, 255, 255);
case 'y':
//yellow
return new Color(255, 255, 0);
default:
LogWriter.writeLog("Unknown color name");
}
return null;
}
}
