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https://issues.apache.org/jira/browse/PDFBOX-405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler resolved PDFBOX-405.
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Resolution: Duplicate
Fix Version/s: 0.8.0-incubator
This issue is already solved with PDFBOX-401.
> Not a bug, but definately incorrect code in PDPageContentStream
> ---------------------------------------------------------------
>
> Key: PDFBOX-405
> URL: https://issues.apache.org/jira/browse/PDFBOX-405
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Environment: All
> Reporter: [email protected]
> Fix For: 0.8.0-incubator
>
>
> There is some deceiving code in the setStrokingColor(float [] components)
> method.
> It is actually only used for ColorSpace.TYPE_GRAY
> This same description that I gave for this problem Exists for the other
> method. setNonStrokingColor
> public void setNonStrokingColor( float[] components ) throws IOException
> The result of the code is the impression that the other cases are handled
> here when they are not.
> Here are the details.
> package org.apache.pdfbox.pdmodel.edit;
> public class PDPageContentStream
> In this class this variable currentStrokingColorSpace never changes value.
> private PDColorSpace currentStrokingColorSpace = new PDDeviceGray();
> // The javadoc is incorrect also it should say for the colorspace PDDeviceGray
> /**
> * Set the color components of current stroking colorspace.
> *
> * @param components The components to set for the current color.
> * @throws IOException If there is an error while writing to the stream.
> */
> //
> // Some confusing code is below, this method is only called when
> // currentStrokingColorSpace is ColorSpace.TYPE_GRAY
> // This method should be made private, since it is only called within this
> class.
> //
> public void setStrokingColor( float[] components ) throws IOException
> {
> for( int i=0; i< components.length; i++ )
> {
> appendRawCommands( formatDecimal.format( components[i] ) );
> appendRawCommands( SPACE );
> }
> //
> // The top half of this "if" statement is never executed
> // the variable "currentStrokingColorSpace" is never set to
> // anything other than a new class of type PDDeviceGray.
> // Therefore it can never be any of the 4 types of classes below.
> //
> if( currentStrokingColorSpace instanceof PDSeparation ||
> currentStrokingColorSpace instanceof PDPattern ||
> currentStrokingColorSpace instanceof PDDeviceN ||
> currentStrokingColorSpace instanceof PDICCBased )
> {
> appendRawCommands( SET_STROKING_COLOR_COMPLEX );
> }
> else
> {
> appendRawCommands( SET_STROKING_COLOR_SIMPLE );
> }
> }
> //When the top half of the IF statement is removed, then
> //these variables are no longer used.
> //
> private static final String SET_STROKING_COLOR_COMPLEX="SCN\n";
> private PDColorSpace currentStrokingColorSpace = new PDDeviceGray();
> // therefore I believe that you may never generate the value SCN in the
> PageContentStream.
> ----------------------------
> //
> // I searched all the code for this method; this is the only one reference to
> the method that I found.
> // that is why I believe that the method should be made private.
> // However; since it was public in the past, I can't guarantee that someone
> does not call the method.
> //
> public void setStrokingColor( Color color ) throws IOException
> {
> ColorSpace colorSpace = color.getColorSpace();
> if( colorSpace.getType() == ColorSpace.TYPE_RGB )
> {
> setStrokingColor( color.getRed(),
> color.getGreen(),color.getBlue() );
> }
> else if( colorSpace.getType() == ColorSpace.TYPE_GRAY )
> {
> color.getColorComponents( colorComponents );
> setStrokingColor( colorComponents[0] ); // <-- this was the only
> reference to the method
> }
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