/usr/include/podofo/doc/PdfSigIncPainter.h is in libpodofo-dev 0.9.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2014 by Dominik Seichter *
* domseichter@web.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* In addition, as a special exception, the copyright holders give *
* permission to link the code of portions of this program with the *
* OpenSSL library under certain conditions as described in each *
* individual source file, and distribute linked combinations *
* including the two. *
* You must obey the GNU General Public License in all respects *
* for all of the code used other than OpenSSL. If you modify *
* file(s) with this exception, you may extend this exception to your *
* version of the file(s), but you are not obligated to do so. If you *
* do not wish to do so, delete this exception statement from your *
* version. If you delete this exception statement from all source *
* files in the program, then also delete it here. *
***************************************************************************/
#ifndef _PDF_SIGINCPAINTER_H_
#define _PDF_SIGINCPAINTER_H_
#include "podofo/base/PdfDefines.h"
#include "PdfPainter.h"
namespace PoDoFo {
template <class T> struct TExLineElement
{
TExLineElement()
: pszStart( NULL ), lLen( 0L )
{
}
const T* pszStart;
pdf_long lLen;
};
class PdfPainter;
class PODOFO_DOC_API PdfSigIncPainter : public PdfPainter {
public:
PdfSigIncPainter(PdfDocument *pDocument, bool bLinear);
virtual ~PdfSigIncPainter();
void SetPageCanvas(PdfCanvas *pPage, PdfObject* pContents );
void EndCanvas();
void DrawMultiLineText( const PdfRect & rRect, const PdfString & rsText,
EPdfAlignment eAlignment = ePdfAlignment_Left, EPdfVerticalAlignment eVertical=ePdfVerticalAlignment_Top);
protected:
int IsSpace(const char *pszChar);
int IsLf(const char *pszChar);
int IsSpace(const pdf_utf16be *pszChar);
int IsLf(const pdf_utf16be *pszChar);
double GetFontCharWidth(const char *pszChar);
double GetFontCharWidth(const pdf_utf16be *pszChar);
virtual void AddToPageResources( const PdfName & rIdentifier, const PdfReference & rRef, const PdfName & rName );
template <class T> void DrawMultiLineText(double dX, double dY, double dWidth, double dHeight,
EPdfAlignment eAlignment, EPdfVerticalAlignment eVertical,
const std::vector< TExLineElement<T> > &vecLines)
{
// Do vertical alignment
switch( eVertical )
{
default:
case ePdfVerticalAlignment_Top:
dY += dHeight; break;
case ePdfVerticalAlignment_Bottom:
dY += m_pFont->GetFontMetrics()->GetLineSpacing() * vecLines.size(); break;
case ePdfVerticalAlignment_Center:
dY += (dHeight -
((dHeight - (m_pFont->GetFontMetrics()->GetLineSpacing() * vecLines.size()))/2.0));
break;
}
typedef typename std::vector< TExLineElement<T> >::const_iterator TExLineElementVectorIterator;
TExLineElementVectorIterator it = vecLines.begin();
while( it != vecLines.end() ) {
dY -= m_pFont->GetFontMetrics()->GetLineSpacing();
if( (*it).pszStart )
this->DrawTextAligned( dX, dY, dWidth, PdfString( (*it).pszStart, (*it).lLen ), eAlignment );
++it;
}
}
template <class T> std::vector<TExLineElement<T> > GetMultiLineTextAsLines(const T *mainText, double dWidth)
{
PODOFO_RAISE_LOGIC_IF( !m_pCanvas, "Call SetPage() first before doing drawing operations." );
if( !m_pFont || !m_pPage || mainText == NULL ) {
PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
}
std::vector<TExLineElement<T> > vecLines;
if( dWidth <= 0.0 ) // nonsense arguments
return vecLines;
TExLineElement<T> tLine;
tLine.pszStart = mainText;
const T* pszCurrentCharacter = tLine.pszStart;
const T* pszStartOfCurrentWord = tLine.pszStart;
bool startOfWord = true;
double dCurWidthOfLine = 0.0;
// do simple word wrapping
while( *pszCurrentCharacter )
{
if( IsLf(pszCurrentCharacter) ) // hard-break!
{
tLine.lLen = pszCurrentCharacter - tLine.pszStart;
vecLines.push_back( tLine );
++pszCurrentCharacter; // skip the line feed
tLine.pszStart = pszCurrentCharacter;
startOfWord = true;
dCurWidthOfLine = 0.0;
}
else if(IsSpace(pszCurrentCharacter))
{
if( dCurWidthOfLine > dWidth )
{
// The previous word does not fit in the current line.
// -> Move it to the next one.
tLine.lLen = pszStartOfCurrentWord - tLine.pszStart;
vecLines.push_back( tLine );
tLine.pszStart = pszStartOfCurrentWord;
if (!startOfWord)
{
dCurWidthOfLine = m_pFont->GetFontMetrics()->StringWidth( pszStartOfCurrentWord, pszCurrentCharacter-pszStartOfCurrentWord );
}
else
{
dCurWidthOfLine = 0.0;
}
}
else
{
dCurWidthOfLine += GetFontCharWidth(pszCurrentCharacter );
}
startOfWord = true;
}
else
{
if (startOfWord)
{
pszStartOfCurrentWord = pszCurrentCharacter;
startOfWord = false;
}
//else do nothing
if ((dCurWidthOfLine + GetFontCharWidth(pszCurrentCharacter )) > dWidth)
{
if ( tLine.pszStart == pszStartOfCurrentWord )
{
// This word takes up the whole line.
// Put as much as possible on this line.
tLine.lLen = pszCurrentCharacter - tLine.pszStart;
vecLines.push_back( tLine );
tLine.pszStart = pszCurrentCharacter;
pszStartOfCurrentWord = pszCurrentCharacter;
dCurWidthOfLine = GetFontCharWidth(pszCurrentCharacter );
}
else
{
// The current word does not fit in the current line.
// -> Move it to the next one.
tLine.lLen = pszStartOfCurrentWord - tLine.pszStart;
vecLines.push_back( tLine );
tLine.pszStart = pszStartOfCurrentWord;
dCurWidthOfLine = m_pFont->GetFontMetrics()->StringWidth( pszStartOfCurrentWord, (pszCurrentCharacter-pszStartOfCurrentWord) + 1 );
}
}
else
{
dCurWidthOfLine +=GetFontCharWidth(pszCurrentCharacter );
}
}
++pszCurrentCharacter;
}
if( pszCurrentCharacter-tLine.pszStart > 0 )
{
if( dCurWidthOfLine > dWidth )
{
// The previous word does not fit in the current line.
// -> Move it to the next one.
tLine.lLen = pszStartOfCurrentWord - tLine.pszStart;
vecLines.push_back( tLine );
tLine.pszStart = pszStartOfCurrentWord;
}
//else do nothing
if( pszCurrentCharacter-tLine.pszStart > 0 )
{
tLine.lLen = pszCurrentCharacter - tLine.pszStart;
vecLines.push_back( tLine );
}
//else do nothing
}
return vecLines;
}
private:
PdfDocument *m_pDocument;
bool m_bLinearized;
};
};
#endif
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