diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/font/PDCIDFont.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdmodel/font/PDCIDFont.java | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/font/PDCIDFont.java b/src/main/java/org/pdfbox/pdmodel/font/PDCIDFont.java new file mode 100644 index 0000000..e13b821 --- /dev/null +++ b/src/main/java/org/pdfbox/pdmodel/font/PDCIDFont.java @@ -0,0 +1,248 @@ +/**
+ * Copyright (c) 2003-2005, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.pdmodel.font;
+
+import java.awt.Graphics;
+
+import java.io.IOException;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.pdfbox.cos.COSArray;
+import org.pdfbox.cos.COSBase;
+import org.pdfbox.cos.COSDictionary;
+import org.pdfbox.cos.COSInteger;
+import org.pdfbox.cos.COSName;
+import org.pdfbox.cos.COSNumber;
+import org.pdfbox.pdmodel.common.PDRectangle;
+
+import org.apache.log4j.Logger;
+
+/**
+ * This is implementation for the CIDFontType0/CIDFontType2 Fonts.
+ *
+ * @author Ben Litchfield (ben@csh.rit.edu)
+ * @version $Revision: 1.7 $
+ */
+public abstract class PDCIDFont extends PDFont
+{
+ private static Logger log = Logger.getLogger(PDCIDFont.class);
+
+
+ private Map widthCache = new HashMap();
+
+ /**
+ * Constructor.
+ */
+ public PDCIDFont()
+ {
+ super();
+ }
+
+ /**
+ * Constructor.
+ *
+ * @param fontDictionary The font dictionary according to the PDF specification.
+ */
+ public PDCIDFont( COSDictionary fontDictionary )
+ {
+ super( fontDictionary );
+ }
+
+ /**
+ * @see PDFont#drawString( String, Graphics, float, float, float, float, float )
+ */
+ public void drawString( String string, Graphics g, float fontSize,
+ float xScale, float yScale, float x, float y )
+ {
+ throw new RuntimeException( "Not yet implemented" );
+ }
+
+ /**
+ * This will get the fonts bouding box.
+ *
+ * @return The fonts bouding box.
+ *
+ * @throws IOException If there is an error getting the font bounding box.
+ */
+ public PDRectangle getFontBoundingBox() throws IOException
+ {
+ throw new RuntimeException( "Not yet implemented" );
+ }
+
+ /**
+ * This will get the default width. The default value for the default width is 1000.
+ *
+ * @return The default width for the glyphs in this font.
+ */
+ public long getDefaultWidth()
+ {
+ long dw = 1000;
+ COSNumber number = (COSNumber)font.getDictionaryObject( COSName.getPDFName( "DW" ) );
+ if( number != null )
+ {
+ dw = number.intValue();
+ }
+ return dw;
+ }
+
+ /**
+ * This will set the default width for the glyphs of this font.
+ *
+ * @param dw The default width.
+ */
+ public void setDefaultWidth( long dw )
+ {
+ font.setItem( COSName.getPDFName( "DW" ), new COSInteger( dw ) );
+ }
+
+ /**
+ * This will get the font width for a character.
+ *
+ * @param c The character code to get the width for.
+ * @param offset The offset into the array.
+ * @param length The length of the data.
+ *
+ * @return The width is in 1000 unit of text space, ie 333 or 777
+ *
+ * @throws IOException If an error occurs while parsing.
+ */
+ public float getFontWidth( byte[] c, int offset, int length ) throws IOException
+ {
+
+ float retval = 0.0f;
+ int code = getCodeFromArray( c, offset, length );
+
+ Float widthFloat = (Float)widthCache.get( new Integer( code ) );
+ if( widthFloat == null )
+ {
+ COSArray widths = (COSArray)font.getDictionaryObject( COSName.getPDFName( "W" ) );
+
+ if( widths != null )
+ {
+ boolean foundWidth = false;
+ for( int i=0; !foundWidth && i<widths.size(); i++ )
+ {
+ COSNumber firstCode = (COSNumber)widths.getObject( i++ );
+ COSBase next = widths.getObject( i );
+ if( next instanceof COSArray )
+ {
+ COSArray array = (COSArray)next;
+ if( code >= firstCode.intValue() &&
+ code < firstCode.intValue() + array.size() )
+ {
+ COSNumber rangeWidth =
+ (COSNumber)array.get( code - firstCode.intValue() );
+ retval = rangeWidth.floatValue();
+ foundWidth = true;
+ }
+ }
+ else
+ {
+ COSNumber secondCode = (COSNumber)next;
+ i++;
+ COSNumber rangeWidth = (COSNumber)widths.getObject( i );
+ if( code >= firstCode.intValue() &&
+ code <= secondCode.intValue() )
+ {
+ retval = rangeWidth.floatValue();
+ foundWidth = true;
+ }
+ }
+ }
+ widthCache.put( new Integer( code ), new Float( retval ) );
+ }
+ }
+ else
+ {
+ retval = widthFloat.floatValue();
+ }
+
+ if(log.isDebugEnabled() )
+ {
+ log.debug( "PDCIDFontType0Font.getFontWidth( code=" + code +" ) retval=" +retval );
+ }
+ return retval;
+ }
+
+ /**
+ * This will get the average font width for all characters.
+ *
+ * @return The width is in 1000 unit of text space, ie 333 or 777
+ *
+ * @throws IOException If an error occurs while parsing.
+ */
+ public float getAverageFontWidth() throws IOException
+ {
+ float totalWidths = 0.0f;
+ float characterCount = 0.0f;
+ float defaultWidth = getDefaultWidth();
+ COSArray widths = (COSArray)font.getDictionaryObject( COSName.getPDFName( "W" ) );
+
+ if( widths != null )
+ {
+ for( int i=0; i<widths.size(); i++ )
+ {
+ COSNumber firstCode = (COSNumber)widths.getObject( i++ );
+ COSBase next = widths.getObject( i );
+ float nextWidth=0.0f;
+ if( next instanceof COSArray )
+ {
+ COSArray array = (COSArray)next;
+ for( int j=0; j<array.size(); j++ )
+ {
+ COSNumber width = (COSNumber)array.get( j );
+ totalWidths+=width.floatValue();
+ characterCount += 1;
+ }
+ }
+ else
+ {
+ COSNumber secondCode = (COSNumber)next;
+ i++;
+ COSNumber rangeWidth = (COSNumber)widths.getObject( i );
+ if( rangeWidth.floatValue() > 0 )
+ {
+ totalWidths += rangeWidth.floatValue();
+ characterCount += 1;
+ }
+ }
+ }
+ }
+ float average = totalWidths / characterCount;
+ if( average <= 0 )
+ {
+ average = defaultWidth;
+ }
+ return average;
+ }
+}
\ No newline at end of file |