/*
* 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 java.awt.Image;
import java.io.IOException;
import java.util.List;
import org.apache.fontbox.util.BoundingBox;
import org.apache.pdfbox.cos.COSNumber;
import org.apache.pdfbox.cos.COSStream;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDInlinedImage;
import org.apache.pdfbox.util.ImageParameters;
import org.apache.pdfbox.util.PDFOperator;
import org.apache.pdfbox.util.PDFStreamEngine;
/**
* This class will handle creating an image for a type 3 glyph.
*
* @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.10 $
*/
public class Type3StreamParser extends PDFStreamEngine
{
private PDInlinedImage image = null;
private BoundingBox box = null;
/**
* This will parse a type3 stream and create an image from it.
*
* @param type3Stream The stream containing the operators to draw the image.
*
* @return The image that was created.
*
* @throws IOException If there is an error processing the stream.
*/
public Image createImage( COSStream type3Stream ) throws IOException
{
processStream( null, null, type3Stream );
return image.createImage();
}
/**
* This is used to handle an operation.
*
* @param operator The operation to perform.
* @param arguments The list of arguments.
*
* @throws IOException If there is an error processing the operation.
*/
protected void processOperator( PDFOperator operator, List arguments ) throws IOException
{
super.processOperator( operator, arguments );
String operation = operator.getOperation();
/**
if( operation.equals( "b" ) )
{
//Close, fill, and stroke path using nonzero winding number rule
}
else if( operation.equals( "B" ) )
{
//Fill and stroke path using nonzero winding number rule
}
else if( operation.equals( "b*" ) )
{
//Close, fill, and stroke path using even-odd rule
}
else if( operation.equals( "B*" ) )
{
//Fill and stroke path using even-odd rule
}
else if( operation.equals( "BDC" ) )
{
//(PDF 1.2) Begin marked-content sequence with property list
}
else **/if( operation.equals( "BI" ) )
{
ImageParameters params = operator.getImageParameters();
image = new PDInlinedImage();
image.setImageParameters( params );
image.setImageData( operator.getImageData() );
//begin inline image object
}/**
else if( operation.equals( "BMC" ) )
{
//(PDF 1.2) Begin marked-content sequence
}
else if( operation.equals( "BT" ) )
{
log.debug( "<BT>" );
textMatrix = new Matrix();
textLineMatrix = new Matrix();
}
else if( operation.equals( "BX" ) )
{
//(PDF 1.1) Begin compatibility section
}
else if( operation.equals( "c" ) )
{
//Append curved segment to path (three control points)
}
else if( operation.equals( "cm" ) )
{
}
else if( operation.equals( "cs" ) )
{
}
else if( operation.equals( "CS" ) )
{
}
else if( operation.equals( "d" ) )
{
//Set the line dash pattern in the graphics state
}
else */if( operation.equals( "d0" ) )
{
//set glyph with for a type3 font
//COSNumber horizontalWidth = (COSNumber)arguments.get( 0 );
//COSNumber verticalWidth = (COSNumber)arguments.get( 1 );
//width = horizontalWidth.intValue();
//height = verticalWidth.intValue();
}
else if( operation.equals( "d1" ) )
{
//set glyph with and bounding box for type 3 font
//COSNumber horizontalWidth = (COSNumber)arguments.get( 0 );
//COSNumber verticalWidth = (COSNumber)arguments.get( 1 );
COSNumber llx = (COSNumber)arguments.get( 2 );
COSNumber lly = (COSNumber)arguments.get( 3 );
COSNumber urx = (COSNumber)arguments.get( 4 );
COSNumber ury = (COSNumber)arguments.get( 5 );
//width = horizontalWidth.intValue();
//height = verticalWidth.intValue();
box = new BoundingBox();
box.setLowerLeftX( llx.floatValue() );
box.setLowerLeftY( lly.floatValue() );
box.setUpperRightX( urx.floatValue() );
box.setUpperRightY( ury.floatValue() );
}/*
else if( operation.equals( "Do" ) )
{
//invoke named object.
}
else if( operation.equals( "DP" ) )
{
//(PDF 1.2) De.ne marked-content point with property list
}
else if( operation.equals( "EI" ) )
{
//end inline image object
}
else if( operation.equals( "EMC" ) )
{
//End inline image object
}
else if( operation.equals( "ET" ) )
{
log.debug( "<ET>" );
textMatrix = null;
textLineMatrix = null;
}
else if( operation.equals( "EX" ) )
{
//(PDF 1.1) End compatibility section
}
else if( operation.equals( "f" ) )
{
//Fill the path, using the nonzero winding number rule to determine the region to .ll
}
else if( operation.equals( "F" ) )
{
}
else if( operation.equals( "f*" ) )
{
//Fill path using even-odd rule
}
else if( operation.equals( "g" ) )
{
}
else if( operation.equals( "G" ) )
{
}
else if( operation.equals( "gs" ) )
{
}
else if( operation.equals( "h" ) )
{
//close subpath
}
else if( operation.equals( "i" ) )
{
//set flatness tolerance, not sure what this does
}
else if( operation.equals( "ID" ) )
{
//begin inline image data
}
else if( operation.equals( "j" ) )
{
//Set the line join style in the graphics state
//System.out.println( "<j>" );
}
else if( operation.equals( "J" ) )
{
//Set the line cap style in the graphics state
//System.out.println( "<J>" );
}
else if( operation.equals( "k" ) )
{
//Set CMYK color for nonstroking operations
}
else if( operation.equals( "K" ) )
{
//Set CMYK color for stroking operations
}
else if( operation.equals( "l" ) )
{
//append straight line segment from the current point to the point.
COSNumber x = (COSNumber)arguments.get( 0 );
COSNumber y = (COSNumber)arguments.get( 1 );
linePath.lineTo( x.floatValue(), pageSize.getHeight()-y.floatValue() );
}
else if( operation.equals( "m" ) )
{
COSNumber x = (COSNumber)arguments.get( 0 );
COSNumber y = (COSNumber)arguments.get( 1 );
linePath.reset();
linePath.moveTo( x.floatValue(), pageSize.getHeight()-y.floatValue() );
//System.out.println( "<m x=\"" + x.getValue() + "\" y=\"" + y.getValue() + "\" >" );
}
else if( operation.equals( "M" ) )
{
//System.out.println( "<M>" );
}
else if( operation.equals( "MP" ) )
{
//(PDF 1.2) Define marked-content point
}
else if( operation.equals( "n" ) )
{
//End path without .lling or stroking
//System.out.println( "<n>" );
}
else if( operation.equals( "q" ) )
{
//save graphics state
if( log.isDebugEnabled() )
{
log.debug( "<" + operation + "> - save state" );
}
graphicsStack.push(graphicsState.clone());
}
else if( operation.equals( "Q" ) )
{
//restore graphics state
if( log.isDebugEnabled() )
{
log.debug( "<" + operation + "> - restore state" );
}
graphicsState = (PDGraphicsState)graphicsStack.pop();
}
else if( operation.equals( "re" ) )
{
}
else if( operation.equals( "rg" ) )
{
//Set RGB color for nonstroking operations
}
else if( operation.equals( "RG" ) )
{
//Set RGB color for stroking operations
}
else if( operation.equals( "ri" ) )
{
//Set color rendering intent
}
else if( operation.equals( "s" ) )
{
//Close and stroke path
}
else if( operation.equals( "S" ) )
{
graphics.draw( linePath );
}
else if( operation.equals( "sc" ) )
{
//set color for nonstroking operations
//System.out.println( "<sc>" );
}
else if( operation.equals( "SC" ) )
{
//set color for stroking operations
//System.out.println( "<SC>" );
}
else if( operation.equals( "scn" ) )
{
//set color for nonstroking operations special
}
else if( operation.equals( "SCN" ) )
{
//set color for stroking operations special
}
else if( operation.equals( "sh" ) )
{
//(PDF 1.3) Paint area de.ned by shading pattern
}
else if( operation.equals( "T*" ) )
{
if (log.isDebugEnabled())
{
log.debug("<T* graphicsState.getTextState().getLeading()=\"" +
graphicsState.getTextState().getLeading() + "\">");
}
//move to start of next text line
if( graphicsState.getTextState().getLeading() == 0 )
{
graphicsState.getTextState().setLeading( -.01f );
}
Matrix td = new Matrix();
td.setValue( 2, 1, -1 * graphicsState.getTextState().getLeading() * textMatrix.getValue(1,1));
textLineMatrix = textLineMatrix.multiply( td );
textMatrix = textLineMatrix.copy();
}
else if( operation.equals( "Tc" ) )
{
//set character spacing
COSNumber characterSpacing = (COSNumber)arguments.get( 0 );
if (log.isDebugEnabled())
{
log.debug("<Tc characterSpacing=\"" + characterSpacing.floatValue() + "\" />");
}
graphicsState.getTextState().setCharacterSpacing( characterSpacing.floatValue() );
}
else if( operation.equals( "Td" ) )
{
COSNumber x = (COSNumber)arguments.get( 0 );
COSNumber y = (COSNumber)arguments.get( 1 );
if (log.isDebugEnabled())
{
log.debug("<Td x=\"" + x.floatValue() + "\" y=\"" + y.floatValue() + "\">");
}
Matrix td = new Matrix();
td.setValue( 2, 0, x.floatValue() * textMatrix.getValue(0,0) );
td.setValue( 2, 1, y.floatValue() * textMatrix.getValue(1,1) );
//log.debug( "textLineMatrix before " + textLineMatrix );
textLineMatrix = textLineMatrix.multiply( td );
//log.debug( "textLineMatrix after " + textLineMatrix );
textMatrix = textLineMatrix.copy();
}
else if( operation.equals( "TD" ) )
{
//move text position and set leading
COSNumber x = (COSNumber)arguments.get( 0 );
COSNumber y = (COSNumber)arguments.get( 1 );
if (log.isDebugEnabled())
{
log.debug("<TD x=\"" + x.floatValue() + "\" y=\"" + y.floatValue() + "\">");
}
graphicsState.getTextState().setLeading( -1 * y.floatValue() );
Matrix td = new Matrix();
td.setValue( 2, 0, x.floatValue() * textMatrix.getValue(0,0) );
td.setValue( 2, 1, y.floatValue() * textMatrix.getValue(1,1) );
//log.debug( "textLineMatrix before " + textLineMatrix );
textLineMatrix = textLineMatrix.multiply( td );
//log.debug( "textLineMatrix after " + textLineMatrix );
textMatrix = textLineMatrix.copy();
}
else if( operation.equals( "Tf" ) )
{
//set font and size
COSName fontName = (COSName)arguments.get( 0 );
graphicsState.getTextState().setFontSize( ((COSNumber)arguments.get( 1 ) ).floatValue() );
if (log.isDebugEnabled())
{
log.debug("<Tf font=\"" + fontName.getName() + "\" size=\"" +
graphicsState.getTextState().getFontSize() + "\">");
}
//old way
//graphicsState.getTextState().getFont() = (COSObject)stream.getDictionaryObject( fontName );
//if( graphicsState.getTextState().getFont() == null )
//{
// graphicsState.getTextState().getFont() = (COSObject)graphicsState.getTextState().getFont()
// Dictionary.getItem( fontName );
//}
graphicsState.getTextState().setFont( (PDFont)fonts.get( fontName.getName() ) );
if( graphicsState.getTextState().getFont() == null )
{
throw new IOException( "Error: Could not find font(" + fontName + ") in map=" + fonts );
}
//log.debug( "Font Resource=" + fontResource );
//log.debug( "Current Font=" + graphicsState.getTextState().getFont() );
//log.debug( "graphicsState.getTextState().getFontSize()=" + graphicsState.getTextState().getFontSize() );
}
else if( operation.equals( "Tj" ) )
{
COSString string = (COSString)arguments.get( 0 );
TextPosition pos = showString( string.getBytes() );
if (log.isDebugEnabled())
{
log.debug("<Tj string=\"" + string.getString() + "\">");
}
}
else if( operation.equals( "TJ" ) )
{
Matrix td = new Matrix();
COSArray array = (COSArray)arguments.get( 0 );
for( int i=0; i<array.size(); i++ )
{
COSBase next = array.get( i );
if( next instanceof COSNumber )
{
float value = -1*
(((COSNumber)next).floatValue()/1000) *
graphicsState.getTextState().getFontSize() *
textMatrix.getValue(1,1);
if (log.isDebugEnabled())
{
log.debug( "<TJ(" + i + ") value=\"" + value +
"\", param=\"" + ((COSNumber)next).floatValue() +
"\", fontsize=\"" + graphicsState.getTextState().getFontSize() + "\">" );
}
td.setValue( 2, 0, value );
textMatrix = textMatrix.multiply( td );
}
else if( next instanceof COSString )
{
TextPosition pos = showString( ((COSString)next).getBytes() );
if (log.isDebugEnabled())
{
log.debug("<TJ(" + i + ") string=\"" + pos.getString() + "\">");
}
}
else
{
throw new IOException( "Unknown type in array for TJ operation:" + next );
}
}
}
else if( operation.equals( "TL" ) )
{
COSNumber leading = (COSNumber)arguments.get( 0 );
graphicsState.getTextState().setLeading( leading.floatValue() );
if (log.isDebugEnabled())
{
log.debug("<TL leading=\"" + leading.floatValue() + "\" >");
}
}
else if( operation.equals( "Tm" ) )
{
//Set text matrix and text line matrix
COSNumber a = (COSNumber)arguments.get( 0 );
COSNumber b = (COSNumber)arguments.get( 1 );
COSNumber c = (COSNumber)arguments.get( 2 );
COSNumber d = (COSNumber)arguments.get( 3 );
COSNumber e = (COSNumber)arguments.get( 4 );
COSNumber f = (COSNumber)arguments.get( 5 );
if (log.isDebugEnabled())
{
log.debug("<Tm " +
"a=\"" + a.floatValue() + "\" " +
"b=\"" + b.floatValue() + "\" " +
"c=\"" + c.floatValue() + "\" " +
"d=\"" + d.floatValue() + "\" " +
"e=\"" + e.floatValue() + "\" " +
"f=\"" + f.floatValue() + "\" >");
}
textMatrix = new Matrix();
textMatrix.setValue( 0, 0, a.floatValue() );
textMatrix.setValue( 0, 1, b.floatValue() );
textMatrix.setValue( 1, 0, c.floatValue() );
textMatrix.setValue( 1, 1, d.floatValue() );
textMatrix.setValue( 2, 0, e.floatValue() );
textMatrix.setValue( 2, 1, f.floatValue() );
textLineMatrix = textMatrix.copy();
}
else if( operation.equals( "Tr" ) )
{
//Set text rendering mode
//System.out.println( "<Tr>" );
}
else if( operation.equals( "Ts" ) )
{
//Set text rise
//System.out.println( "<Ts>" );
}
else if( operation.equals( "Tw" ) )
{
//set word spacing
COSNumber wordSpacing = (COSNumber)arguments.get( 0 );
if (log.isDebugEnabled())
{
log.debug("<Tw wordSpacing=\"" + wordSpacing.floatValue() + "\" />");
}
graphicsState.getTextState().setWordSpacing( wordSpacing.floatValue() );
}
else if( operation.equals( "Tz" ) )
{
//Set horizontal text scaling
}
else if( operation.equals( "v" ) )
{
//Append curved segment to path (initial point replicated)
}
else if( operation.equals( "w" ) )
{
//Set the line width in the graphics state
//System.out.println( "<w>" );
}
else if( operation.equals( "W" ) )
{
//Set clipping path using nonzero winding number rule
//System.out.println( "<W>" );
}
else if( operation.equals( "W*" ) )
{
//Set clipping path using even-odd rule
}
else if( operation.equals( "y" ) )
{
//Append curved segment to path (final point replicated)
}
else if( operation.equals( "'" ) )
{
// Move to start of next text line, and show text
//
COSString string = (COSString)arguments.get( 0 );
if (log.isDebugEnabled())
{
log.debug("<' string=\"" + string.getString() + "\">");
}
Matrix td = new Matrix();
td.setValue( 2, 1, -1 * graphicsState.getTextState().getLeading() * textMatrix.getValue(1,1));
textLineMatrix = textLineMatrix.multiply( td );
textMatrix = textLineMatrix.copy();
showString( string.getBytes() );
}
else if( operation.equals( "\"" ) )
{
//Set word and character spacing, move to next line, and show text
//
COSNumber wordSpacing = (COSNumber)arguments.get( 0 );
COSNumber characterSpacing = (COSNumber)arguments.get( 1 );
COSString string = (COSString)arguments.get( 2 );
if (log.isDebugEnabled())
{
log.debug("<\" wordSpacing=\"" + wordSpacing +
"\", characterSpacing=\"" + characterSpacing +
"\", string=\"" + string.getString() + "\">");
}
graphicsState.getTextState().setCharacterSpacing( characterSpacing.floatValue() );
graphicsState.getTextState().setWordSpacing( wordSpacing.floatValue() );
Matrix td = new Matrix();
td.setValue( 2, 1, -1 * graphicsState.getTextState().getLeading() * textMatrix.getValue(1,1));
textLineMatrix = textLineMatrix.multiply( td );
textMatrix = textLineMatrix.copy();
showString( string.getBytes() );
}*/
}
}