/**
* Copyright (C) 2002-2012 The FreeCol Team
*
* This file is part of FreeCol.
*
* FreeCol is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* FreeCol 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FreeCol. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.freecol.common.resources;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.StringTokenizer;
import org.freecolandroid.repackaged.java.awt.Dimension;
import org.freecolandroid.repackaged.java.awt.Point;
/**
* Represents the data within a Font Animation File.
*
* @see net.sf.freecol.client.gui.panel.DeclarationDialog
*/
public class FAFile {
// TODO: Use two hashes, to be safer.
private HashMap<Object, Object> letters = new HashMap<Object, Object>();
private int maxHeight = 0;
/**
* Reads data from the given <code>InputStream</code> and
* creates an object to represent this data.
*
* @param is The <code>InputStream</code>
* @throws IOException gets thrown if the data is invalid.
*/
public FAFile(InputStream is) throws IOException {
load(new CREatingInputStream(is));
}
/**
* Gets the <code>Dimension</code> of the given
* <code>String</code> when rendered.
*
* @param text The <code>String</code>.
* @return The <code>Dimension</code>.
*/
public Dimension getDimension(String text) {
FAName fn = getFAName(text);
if (fn != null) {
return new Dimension(fn.width, fn.height);
}
int width = 0;
for (int i=0; i<text.length(); i++) {
FALetter fl = getLetter(text.charAt(i));
width += fl.advance;
}
int firstMinX = Integer.MAX_VALUE;
FALetter letter = getLetter(text.charAt(0));
for (int i=0; i<letter.points.length; i++) {
Point p = letter.points[i];
if (p.x < firstMinX) {
firstMinX = p.x;
}
}
width += firstMinX;
int lastMaxX = 0;
letter = getLetter(text.charAt(text.length()-1));
for (int i=0; i<letter.points.length; i++) {
Point p = letter.points[i];
if (p.x > lastMaxX) {
lastMaxX = p.x;
}
}
width += lastMaxX;
return new Dimension(width, maxHeight);
}
/**
* Gets the points to display the given text as an
* animation.
*
* @param text The text to get the points for.
* @return The points in the order in which they
* should be drawn.
*/
public Point[] getPoints(String text) {
FAName fn = getFAName(text);
if (fn != null) {
return fn.points;
}
ArrayList<Point> points = new ArrayList<Point>();
int x = 0;
for (int i=0; i<text.length(); i++) {
FALetter fl = getLetter(text.charAt(i));
for (int j=0; j<fl.points.length; j++) {
Point p = fl.points[j];
points.add(new Point(p.x + x, p.y));
}
x += fl.advance;
}
return points.toArray(new Point[0]);
}
private void load(InputStream is) throws IOException {
letters.clear();
BufferedReader in = new BufferedReader(new InputStreamReader(is));
if (!in.readLine().startsWith("FontAnimationFile")) {
throw new IllegalStateException("Not a FAF");
}
StringTokenizer st = new StringTokenizer(in.readLine());
maxHeight = Integer.parseInt(st.nextToken());
String line = in.readLine();
while (line != null && !line.startsWith("[Chars]")) {
String name = line;
st = new StringTokenizer(in.readLine());
int width = Integer.parseInt(st.nextToken());
int height = Integer.parseInt(st.nextToken());
int numberOfPoints = Integer.parseInt(st.nextToken());
int[] xs = new int[numberOfPoints];
int[] ys = new int[numberOfPoints];
line = in.readLine();
st = new StringTokenizer(line);
for (int i=0; i<numberOfPoints; i++) {
xs[i] = Integer.parseInt(st.nextToken());
}
line = in.readLine();
st = new StringTokenizer(line);
for (int i=0; i<numberOfPoints; i++) {
ys[i] = Integer.parseInt(st.nextToken());
}
FAName newLetter = new FAName();
newLetter.width = width;
newLetter.height = height;
newLetter.points = new Point[numberOfPoints];
for (int i=0; i<numberOfPoints; i++) {
newLetter.points[i] = new Point(xs[i], ys[i]);
}
letters.put(name, newLetter);
line = in.readLine();
}
line = in.readLine();
while (line != null) {
st = new StringTokenizer(line.substring(1));
char letter = line.charAt(0);
int advance = Integer.parseInt(st.nextToken());
int numberOfPoints = Integer.parseInt(st.nextToken());
int[] xs = new int[numberOfPoints];
int[] ys = new int[numberOfPoints];
line = in.readLine();
st = new StringTokenizer(line);
for (int i=0; i<numberOfPoints; i++) {
xs[i] = Integer.parseInt(st.nextToken());
}
line = in.readLine();
st = new StringTokenizer(line);
for (int i=0; i<numberOfPoints; i++) {
ys[i] = Integer.parseInt(st.nextToken());
}
FALetter newLetter = new FALetter();
newLetter.advance = advance;
newLetter.points = new Point[numberOfPoints];
for (int i=0; i<numberOfPoints; i++) {
newLetter.points[i] = new Point(xs[i], ys[i]);
}
letters.put(new Character(letter), newLetter);
line = in.readLine();
}
}
private FALetter getLetter(char letter) {
return (FALetter) letters.get(new Character(letter));
}
private FAName getFAName(String name) {
return (FAName) letters.get(name);
}
private static class FALetter {
public Point[] points;
public int advance;
}
private static class FAName {
public Point[] points;
public int width;
public int height;
}
/**
* This utility class removes all CR:s from an {@link InputStream}.
* It is not particularly efficient and is intended as a temporary
* workaround.
*/
private static class CREatingInputStream extends InputStream {
/**
* Constructor.
*
* @param in The input stream to wrap.
*/
CREatingInputStream(InputStream in) {
this.in = in;
}
/**
* Read a character, override to eat all CR:s.
*
* @return next character or -1 on end of file.
* @throws IOException if wrapped stream throws it.
*/
@Override
public int read() throws IOException {
int c;
do {
c = this.in.read();
} while(c == '\r');
return c;
}
private final InputStream in;
}
}