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Java > Open Source Codes > org > pdfbox > util > operator > SetTextFont


1 /**
2  * Copyright (c) 2004, www.pdfbox.org
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  * 3. Neither the name of pdfbox; nor the names of its
14  * contributors may be used to endorse or promote products derived from this
15  * software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * http://www.pdfbox.org
29  *
30  */
31 package org.pdfbox.util.operator;
32
33 import java.util.List JavaDoc;
34
35 import org.pdfbox.cos.COSName;
36 import org.pdfbox.cos.COSNumber;
37 import org.pdfbox.pdmodel.font.PDFont;
38 import org.pdfbox.util.PDFOperator;
39
40 import java.io.IOException JavaDoc;
41
42 /**
43  * <p>Titre : PDFEngine Modification.</p>
44  * <p>Description : Structal modification of the PDFEngine class :
45  * the long sequence of conditions in processOperator is remplaced by
46  * this strategy pattern</p>
47  * <p>Copyright : Copyright (c) 2004</p>
48  * <p>Société : DBGS</p>
49  * @author Huault : huault@free.fr
50  * @version $Revision: 1.5 $
51  */
52
53 public class SetTextFont extends OperatorProcessor
54 {
55     /**
56      * Tf selectfont Set text font and size.
57      * @param operator The operator that is being executed.
58      * @param arguments List
59      * @throws IOException If an error occurs while processing the font.
60      */
61     public void process(PDFOperator operator, List JavaDoc arguments) throws IOException JavaDoc
62     {
63         //there are some documents that are incorrectly structured and
64 //arguments are in the wrong spot, so we will silently ignore them
65 //if there are no arguments
66 if( arguments.size() >= 2 )
67         {
68             //set font and size
69 COSName fontName = (COSName)arguments.get( 0 );
70             float fontSize = ((COSNumber)arguments.get( 1 ) ).floatValue();
71             context.getGraphicsState().getTextState().setFontSize( fontSize );
72     
73             //old way
74 //graphicsState.getTextState().getFont() = (COSObject)stream.getDictionaryObject( fontName );
75 //if( graphicsState.getTextState().getFont() == null )
76 //{
77 // graphicsState.getTextState().getFont() = (COSObject)graphicsState.getTextState().getFont()
78 // Dictionary.getItem( fontName );
79 //}
80 context.getGraphicsState().getTextState().setFont( (PDFont)context.getFonts().get( fontName.getName() ) );
81             if( context.getGraphicsState().getTextState().getFont() == null )
82             {
83                 throw new IOException JavaDoc( "Error: Could not find font(" + fontName + ") in map=" + context.getFonts() );
84             }
85         }
86     }
87
88 }
89
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