/*
* 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.
*/
package org.apache.pdfbox.pdmodel.font;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSStream;
import org.apache.pdfbox.pdmodel.common.PDMatrix;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* This is implementation of the Type3 Font.
*
* @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.8 $
*/
public class PDType3Font extends PDSimpleFont
{
//A map of character code to java.awt.Image for the glyph
private Map images = new HashMap();
/**
* Constructor.
*/
public PDType3Font()
{
super();
font.setItem( COSName.SUBTYPE, COSName.TYPE3 );
}
/**
* Constructor.
*
* @param fontDictionary The font dictionary according to the PDF specification.
*/
public PDType3Font( COSDictionary fontDictionary )
{
super( fontDictionary );
}
/**
* Type3 fonts have their glyphs defined as a content stream. This
* will create the image that represents that character
*
* @throws IOException If there is an error creating the image.
*/
private Image createImageIfNecessary( char character ) throws IOException
{
Character c = new Character( character );
Image retval = (Image)images.get( c );
if( retval == null )
{
COSDictionary charProcs = (COSDictionary)font.getDictionaryObject( COSName.CHAR_PROCS );
COSStream stream = (COSStream)charProcs.getDictionaryObject( COSName.getPDFName( "" + character ) );
if( stream != null )
{
Type3StreamParser parser = new Type3StreamParser();
retval = parser.createImage( stream );
images.put( c, retval );
}
else
{
//stream should not be null!!
}
}
return retval;
}
/**
* {@inheritDoc}
*/
public void drawString( String string, Graphics g, float fontSize, AffineTransform at, float x, float y )
throws IOException
{
//if( string.equals( "V" )|| string.equals( "o" ) )
{
for(int i=0; i<string.length(); i++)
{
//todo need to use image observers and such
char c = string.charAt( i );
Image image = createImageIfNecessary( c );
if( image != null )
{
int newWidth = (int)(.12*image.getWidth(null));
int newHeight = (int)(.12*image.getHeight(null));
if( newWidth > 0 && newHeight > 0 )
{
image = image.getScaledInstance( newWidth, newHeight, Image.SCALE_SMOOTH );
g.drawImage( image, (int)x, (int)y, null );
x+=newWidth;
}
}
}
}
}
/**
* Set the font matrix for this type3 font.
*
* @param matrix The font matrix for this type3 font.
*/
public void setFontMatrix( PDMatrix matrix )
{
font.setItem( "FontMatrix", matrix );
}
}