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pdfwriter_impl.cxx
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pdfwriter_impl.cxx
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include <sal/types.h>
#include <math.h>
#include <algorithm>
#include <lcms2.h>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <boost/scoped_array.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/util/URL.hpp>
#include <com/sun/star/util/URLTransformer.hpp>
#include <comphelper/processfactory.hxx>
#include <comphelper/string.hxx>
#include <cppuhelper/implbase1.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <o3tl/numeric.hxx>
#include <osl/file.hxx>
#include <osl/thread.h>
#include <rtl/crc.h>
#include <rtl/digest.h>
#include <rtl/ustrbuf.hxx>
#include <tools/debug.hxx>
#include <tools/fract.hxx>
#include <tools/stream.hxx>
#include <tools/urlobj.hxx>
#include <tools/zcodec.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/bmpacc.hxx>
#include <vcl/cvtgrf.hxx>
#include <vcl/image.hxx>
#include <vcl/lineinfo.hxx>
#include <vcl/metric.hxx>
#include <vcl/settings.hxx>
#include <vcl/strhelper.hxx>
#include <vcl/svapp.hxx>
#include <vcl/virdev.hxx>
#include "fontsubset.hxx"
#include "outdev.h"
#include "PhysicalFontFace.hxx"
#include "salgdi.hxx"
#include "sallayout.hxx"
#include "textlayout.hxx"
#include "pdfwriter_impl.hxx"
#if !defined(ANDROID) && !defined(IOS) && !defined(_WIN32)
// NSS headers for PDF signing
#include "nss.h"
#include "cert.h"
#include "hasht.h"
#include "sechash.h"
#include "cms.h"
#include "cmst.h"
#endif
#ifdef _WIN32
// WinCrypt headers for PDF signing
#include <prewin.h>
#include <wincrypt.h>
#include <postwin.h>
#endif
#include <config_eot.h>
#if ENABLE_EOT
#include <libeot/libeot.h>
#endif
using namespace vcl;
#if (OSL_DEBUG_LEVEL < 3)
#define COMPRESS_PAGES
#else
#define DEBUG_DISABLE_PDFCOMPRESSION // also do not compress streams
#endif
#if !defined(ANDROID) && !defined(IOS)
#define MAX_SIGNATURE_CONTENT_LENGTH 0x4000
#endif
#ifdef DO_TEST_PDF
class PDFTestOutputStream : public PDFOutputStream
{
public:
virtual ~PDFTestOutputStream();
virtual void write( const com::sun::star::uno::Reference< com::sun::star::io::XOutputStream >& xStream );
};
PDFTestOutputStream::~PDFTestOutputStream()
{
}
void PDFTestOutputStream::write( const com::sun::star::uno::Reference< com::sun::star::io::XOutputStream >& xStream )
{
OString aStr( "lalala\ntest\ntest\ntest" );
com::sun::star::uno::Sequence< sal_Int8 > aData( aStr.getLength() );
memcpy( aData.getArray(), aStr.getStr(), aStr.getLength() );
xStream->writeBytes( aData );
}
// this test code cannot be used to test PDF/A-1 because it forces
// control item (widgets) to bypass the structure controlling
// the embedding of such elements in actual run
void doTestCode()
{
static const char* pHome = getenv( "HOME" );
OUString aTestFile( "file://" );
aTestFile += OUString( pHome, strlen( pHome ), RTL_TEXTENCODING_MS_1252 );
aTestFile += "/pdf_export_test.pdf";
PDFWriter::PDFWriterContext aContext;
aContext.URL = aTestFile;
aContext.Version = PDFWriter::PDF_1_4;
aContext.Tagged = true;
aContext.InitialPage = 2;
aContext.DocumentInfo.Title = "PDF export test document";
aContext.DocumentInfo.Producer = "VCL";
aContext.SignPDF = true;
aContext.SignLocation = "Burdur";
aContext.SignReason = "Some valid reason to sign";
aContext.SignContact = "signer@example.com";
com::sun::star::uno::Reference< com::sun::star::beans::XMaterialHolder > xEnc;
PDFWriter aWriter( aContext, xEnc );
aWriter.NewPage( 595, 842 );
aWriter.BeginStructureElement( PDFWriter::Document );
// set duration of 3 sec for first page
aWriter.SetAutoAdvanceTime( 3 );
aWriter.SetMapMode( MapMode( MAP_100TH_MM ) );
aWriter.SetFillColor( Color( COL_LIGHTRED ) );
aWriter.SetLineColor( Color( COL_LIGHTGREEN ) );
aWriter.DrawRect( Rectangle( Point( 2000, 200 ), Size( 8000, 3000 ) ), 5000, 2000 );
aWriter.SetFont( Font( OUString( "Times" ), Size( 0, 500 ) ) );
aWriter.SetTextColor( Color( COL_BLACK ) );
aWriter.SetLineColor( Color( COL_BLACK ) );
aWriter.SetFillColor( Color( COL_LIGHTBLUE ) );
Rectangle aRect( Point( 5000, 5000 ), Size( 6000, 3000 ) );
aWriter.DrawRect( aRect );
aWriter.DrawText( aRect, OUString( "Link annot 1" ) );
sal_Int32 nFirstLink = aWriter.CreateLink( aRect );
PDFNote aNote;
aNote.Title = "A small test note";
aNote.Contents = "There is no business like show business like no business i know. Everything about it is appealing.";
aWriter.CreateNote( Rectangle( Point( aRect.Right(), aRect.Top() ), Size( 6000, 3000 ) ), aNote );
Rectangle aTargetRect( Point( 3000, 23000 ), Size( 12000, 6000 ) );
aWriter.SetFillColor( Color( COL_LIGHTGREEN ) );
aWriter.DrawRect( aTargetRect );
aWriter.DrawText( aTargetRect, "Dest second link" );
sal_Int32 nSecondDest = aWriter.CreateDest( aTargetRect );
aWriter.BeginStructureElement( PDFWriter::Section );
aWriter.BeginStructureElement( PDFWriter::Heading );
aWriter.DrawText( Point(4500, 9000), "A small structure test" );
aWriter.EndStructureElement();
aWriter.BeginStructureElement( PDFWriter::Paragraph );
aWriter.SetStructureAttribute( PDFWriter::WritingMode, PDFWriter::LrTb );
aWriter.SetStructureAttribute( PDFWriter::TextDecorationType, PDFWriter::Underline );
aWriter.DrawText( Rectangle( Point( 4500, 10000 ), Size( 12000, 6000 ) ),
"It was the best of PDF, it was the worst of PDF ... or so. This is a pretty nonsensical text to denote a paragraph. I suggest you stop reading it. Because if you read on you might get bored. So continue on your on risk. Hey, you're still here ? Why do you continue to read this as it is of no use at all ? OK, it's your time, but still... . Woah, i even get bored writing this, so let's end this here and now.",
TEXT_DRAW_MULTILINE | TEXT_DRAW_WORDBREAK
);
aWriter.SetActualText( "It was the best of PDF, it was the worst of PDF ... or so. This is a pretty nonsensical text to denote a paragraph. I suggest you stop reading it. Because if you read on you might get bored. So continue on your on risk. Hey, you're still here ? Why do you continue to read this as it is of no use at all ? OK, it's your time, but still... . Woah, i even get bored writing this, so let's end this here and now." );
aWriter.SetAlternateText( "This paragraph contains some lengthy nonsense to test structural element emission of PDFWriter." );
aWriter.EndStructureElement();
aWriter.BeginStructureElement( PDFWriter::Paragraph );
aWriter.SetStructureAttribute( PDFWriter::WritingMode, PDFWriter::LrTb );
aWriter.DrawText( Rectangle( Point( 4500, 19000 ), Size( 12000, 1000 ) ),
"This paragraph is nothing special either but ends on the next page structurewise",
TEXT_DRAW_MULTILINE | TEXT_DRAW_WORDBREAK
);
aWriter.NewPage( 595, 842 );
// test AddStream interface
aWriter.AddStream( "text/plain", new PDFTestOutputStream(), true );
// set transitional mode
aWriter.SetPageTransition( PDFWriter::WipeRightToLeft, 1500 );
aWriter.SetMapMode( MapMode( MAP_100TH_MM ) );
aWriter.SetTextColor( Color( COL_BLACK ) );
aWriter.SetFont( Font( OUString( "Times" ), Size( 0, 500 ) ) );
aWriter.DrawText( Rectangle( Point( 4500, 1500 ), Size( 12000, 3000 ) ),
"Here's where all things come to an end ... well at least the paragaph from the last page.",
TEXT_DRAW_MULTILINE | TEXT_DRAW_WORDBREAK
);
aWriter.EndStructureElement();
aWriter.SetFillColor( Color( COL_LIGHTBLUE ) );
// disable structure
aWriter.BeginStructureElement( PDFWriter::NonStructElement );
aWriter.DrawRect( aRect );
aWriter.BeginStructureElement( PDFWriter::Paragraph );
aWriter.DrawText( aRect, "Link annot 2" );
sal_Int32 nSecondLink = aWriter.CreateLink( aRect );
aWriter.SetFillColor( Color( COL_LIGHTGREEN ) );
aWriter.BeginStructureElement( PDFWriter::ListItem );
aWriter.DrawRect( aTargetRect );
aWriter.DrawText( aTargetRect, "Dest first link" );
sal_Int32 nFirstDest = aWriter.CreateDest( aTargetRect );
// enable structure
aWriter.EndStructureElement();
aWriter.EndStructureElement();
aWriter.EndStructureElement();
aWriter.BeginStructureElement( PDFWriter::Figure );
aWriter.BeginStructureElement( PDFWriter::Caption );
aWriter.DrawText( Point( 4500, 9000 ), "Some drawing stuff inside the structure" );
aWriter.EndStructureElement();
// test clipping
basegfx::B2DPolyPolygon aClip;
basegfx::B2DPolygon aClipPoly;
aClipPoly.append( basegfx::B2DPoint( 8250, 9600 ) );
aClipPoly.append( basegfx::B2DPoint( 16500, 11100 ) );
aClipPoly.append( basegfx::B2DPoint( 8250, 12600 ) );
aClipPoly.append( basegfx::B2DPoint( 4500, 11100 ) );
aClipPoly.setClosed( true );
aClip.append( aClipPoly );
aWriter.Push( PushFlags::CLIPREGION | PushFlags::FILLCOLOR );
aWriter.SetClipRegion( aClip );
aWriter.DrawEllipse( Rectangle( Point( 4500, 9600 ), Size( 12000, 3000 ) ) );
aWriter.MoveClipRegion( 1000, 500 );
aWriter.SetFillColor( Color( COL_RED ) );
aWriter.DrawEllipse( Rectangle( Point( 4500, 9600 ), Size( 12000, 3000 ) ) );
aWriter.Pop();
// test transparency
// draw background
Rectangle aTranspRect( Point( 7500, 13500 ), Size( 9000, 6000 ) );
aWriter.SetFillColor( Color( COL_LIGHTRED ) );
aWriter.DrawRect( aTranspRect );
aWriter.BeginTransparencyGroup();
aWriter.SetFillColor( Color( COL_LIGHTGREEN ) );
aWriter.DrawEllipse( aTranspRect );
aWriter.SetTextColor( Color( COL_LIGHTBLUE ) );
aWriter.DrawText( aTranspRect,
"Some transparent text",
TEXT_DRAW_CENTER | TEXT_DRAW_VCENTER | TEXT_DRAW_MULTILINE | TEXT_DRAW_WORDBREAK );
aWriter.EndTransparencyGroup( aTranspRect, 50 );
// prepare an alpha mask
Bitmap aTransMask( Size( 256, 256 ), 8, &Bitmap::GetGreyPalette( 256 ) );
BitmapWriteAccess* pAcc = aTransMask.AcquireWriteAccess();
for( int nX = 0; nX < 256; nX++ )
for( int nY = 0; nY < 256; nY++ )
pAcc->SetPixel( nX, nY, BitmapColor( (sal_uInt8)((nX+nY)/2) ) );
aTransMask.ReleaseAccess( pAcc );
aTransMask.SetPrefMapMode( MAP_MM );
aTransMask.SetPrefSize( Size( 10, 10 ) );
aWriter.DrawBitmap( Point( 600, 13500 ), Size( 3000, 3000 ), aTransMask );
aTranspRect = Rectangle( Point( 4200, 13500 ), Size( 3000, 3000 ) );
aWriter.SetFillColor( Color( COL_LIGHTRED ) );
aWriter.DrawRect( aTranspRect );
aWriter.SetFillColor( Color( COL_LIGHTGREEN ) );
aWriter.DrawEllipse( aTranspRect );
aWriter.SetTextColor( Color( COL_LIGHTBLUE ) );
aWriter.DrawText( aTranspRect,
"Some transparent text",
TEXT_DRAW_CENTER | TEXT_DRAW_VCENTER | TEXT_DRAW_MULTILINE | TEXT_DRAW_WORDBREAK );
aTranspRect = Rectangle( Point( 1500, 16500 ), Size( 4800, 3000 ) );
aWriter.SetFillColor( Color( COL_LIGHTRED ) );
aWriter.DrawRect( aTranspRect );
Bitmap aImageBmp( Size( 256, 256 ), 24 );
pAcc = aImageBmp.AcquireWriteAccess();
pAcc->SetFillColor( Color( 0xff, 0, 0xff ) );
pAcc->FillRect( Rectangle( Point( 0, 0 ), Size( 256, 256 ) ) );
aImageBmp.ReleaseAccess( pAcc );
BitmapEx aBmpEx( aImageBmp, AlphaMask( aTransMask ) );
aWriter.DrawBitmapEx( Point( 1500, 19500 ), Size( 4800, 3000 ), aBmpEx );
aWriter.EndStructureElement();
aWriter.EndStructureElement();
LineInfo aLI( LINE_DASH, 3 );
aLI.SetDashCount( 2 );
aLI.SetDashLen( 50 );
aLI.SetDotCount( 2 );
aLI.SetDotLen( 25 );
aLI.SetDistance( 15 );
Point aLIPoints[] = { Point( 4000, 10000 ),
Point( 8000, 12000 ),
Point( 3000, 19000 ) };
Polygon aLIPoly( 3, aLIPoints );
aWriter.SetLineColor( Color( COL_BLUE ) );
aWriter.SetFillColor();
aWriter.DrawPolyLine( aLIPoly, aLI );
aLI.SetDashCount( 4 );
aLIPoly.Move( 1000, 1000 );
aWriter.DrawPolyLine( aLIPoly, aLI );
aWriter.NewPage( 595, 842 );
aWriter.SetMapMode( MapMode( MAP_100TH_MM ) );
Wallpaper aWall( aTransMask );
aWall.SetStyle( WALLPAPER_TILE );
aWriter.DrawWallpaper( Rectangle( Point( 4400, 4200 ), Size( 10200, 6300 ) ), aWall );
aWriter.NewPage( 595, 842 );
aWriter.SetMapMode( MapMode( MAP_100TH_MM ) );
aWriter.SetFont( Font( OUString( "Times" ), Size( 0, 500 ) ) );
aWriter.SetTextColor( Color( COL_BLACK ) );
aRect = Rectangle( Point( 4500, 6000 ), Size( 6000, 1500 ) );
aWriter.DrawRect( aRect );
aWriter.DrawText( aRect, "www.heise.de" );
sal_Int32 nURILink = aWriter.CreateLink( aRect );
aWriter.SetLinkURL( nURILink, OUString( "http://www.heise.de" ) );
aWriter.SetLinkDest( nFirstLink, nFirstDest );
aWriter.SetLinkDest( nSecondLink, nSecondDest );
// include a button
PDFWriter::PushButtonWidget aBtn;
aBtn.Name = "testButton";
aBtn.Description = "A test button";
aBtn.Text = "hit me";
aBtn.Location = Rectangle( Point( 4500, 9000 ), Size( 4500, 3000 ) );
aBtn.Border = aBtn.Background = true;
aWriter.CreateControl( aBtn );
// include a uri button
PDFWriter::PushButtonWidget aUriBtn;
aUriBtn.Name = "wwwButton";
aUriBtn.Description = "A URI button";
aUriBtn.Text = "to www";
aUriBtn.Location = Rectangle( Point( 9500, 9000 ), Size( 4500, 3000 ) );
aUriBtn.Border = aUriBtn.Background = true;
aUriBtn.URL = "http://www.heise.de";
aWriter.CreateControl( aUriBtn );
// include a dest button
PDFWriter::PushButtonWidget aDstBtn;
aDstBtn.Name = "destButton";
aDstBtn.Description = "A Dest button";
aDstBtn.Text = "to paragraph";
aDstBtn.Location = Rectangle( Point( 14500, 9000 ), Size( 4500, 3000 ) );
aDstBtn.Border = aDstBtn.Background = true;
aDstBtn.Dest = nFirstDest;
aWriter.CreateControl( aDstBtn );
PDFWriter::CheckBoxWidget aCBox;
aCBox.Name = "textCheckBox";
aCBox.Description = "A test check box";
aCBox.Text = "check me";
aCBox.Location = Rectangle( Point( 4500, 13500 ), Size( 3000, 750 ) );
aCBox.Checked = true;
aCBox.Border = aCBox.Background = false;
aWriter.CreateControl( aCBox );
PDFWriter::CheckBoxWidget aCBox2;
aCBox2.Name = "textCheckBox2";
aCBox2.Description = "Another test check box";
aCBox2.Text = "check me right";
aCBox2.Location = Rectangle( Point( 4500, 14250 ), Size( 3000, 750 ) );
aCBox2.Checked = true;
aCBox2.Border = aCBox2.Background = false;
aCBox2.ButtonIsLeft = false;
aWriter.CreateControl( aCBox2 );
PDFWriter::RadioButtonWidget aRB1;
aRB1.Name = "rb1_1";
aRB1.Description = "radio 1 button 1";
aRB1.Text = "Despair";
aRB1.Location = Rectangle( Point( 4500, 15000 ), Size( 6000, 1000 ) );
aRB1.Selected = true;
aRB1.RadioGroup = 1;
aRB1.Border = aRB1.Background = true;
aRB1.ButtonIsLeft = false;
aRB1.BorderColor = Color( COL_LIGHTGREEN );
aRB1.BackgroundColor = Color( COL_LIGHTBLUE );
aRB1.TextColor = Color( COL_LIGHTRED );
aRB1.TextFont = Font( OUString( "Courier" ), Size( 0, 800 ) );
aWriter.CreateControl( aRB1 );
PDFWriter::RadioButtonWidget aRB2;
aRB2.Name = "rb2_1";
aRB2.Description = "radio 2 button 1";
aRB2.Text = "Joy";
aRB2.Location = Rectangle( Point( 10500, 15000 ), Size( 3000, 1000 ) );
aRB2.Selected = true;
aRB2.RadioGroup = 2;
aWriter.CreateControl( aRB2 );
PDFWriter::RadioButtonWidget aRB3;
aRB3.Name = "rb1_2";
aRB3.Description = "radio 1 button 2";
aRB3.Text = "Desperation";
aRB3.Location = Rectangle( Point( 4500, 16000 ), Size( 3000, 1000 ) );
aRB3.Selected = true;
aRB3.RadioGroup = 1;
aWriter.CreateControl( aRB3 );
PDFWriter::EditWidget aEditBox;
aEditBox.Name = "testEdit";
aEditBox.Description = "A test edit field";
aEditBox.Text = "A little test text";
aEditBox.TextStyle = TEXT_DRAW_LEFT | TEXT_DRAW_VCENTER;
aEditBox.Location = Rectangle( Point( 10000, 18000 ), Size( 5000, 1500 ) );
aEditBox.MaxLen = 100;
aEditBox.Border = aEditBox.Background = true;
aEditBox.BorderColor = Color( COL_BLACK );
aWriter.CreateControl( aEditBox );
// normal list box
PDFWriter::ListBoxWidget aLstBox;
aLstBox.Name = "testListBox";
aLstBox.Text = "One";
aLstBox.Description = "select me";
aLstBox.Location = Rectangle( Point( 4500, 18000 ), Size( 3000, 1500 ) );
aLstBox.Sort = true;
aLstBox.MultiSelect = true;
aLstBox.Border = aLstBox.Background = true;
aLstBox.BorderColor = Color( COL_BLACK );
aLstBox.Entries.push_back( OUString( "One" ) );
aLstBox.Entries.push_back( OUString( "Two" ) );
aLstBox.Entries.push_back( OUString( "Three" ) );
aLstBox.Entries.push_back( OUString( "Four" ) );
aLstBox.SelectedEntries.push_back( 1 );
aLstBox.SelectedEntries.push_back( 2 );
aWriter.CreateControl( aLstBox );
// dropdown list box
aLstBox.Name = "testDropDownListBox";
aLstBox.DropDown = true;
aLstBox.Location = Rectangle( Point( 4500, 19500 ), Size( 3000, 500 ) );
aWriter.CreateControl( aLstBox );
// combo box
PDFWriter::ComboBoxWidget aComboBox;
aComboBox.Name = "testComboBox";
aComboBox.Text = "test a combobox";
aComboBox.Entries.push_back( OUString( "Larry" ) );
aComboBox.Entries.push_back( OUString( "Curly" ) );
aComboBox.Entries.push_back( OUString( "Moe" ) );
aComboBox.Location = Rectangle( Point( 4500, 20000 ), Size( 3000, 500 ) );
aWriter.CreateControl( aComboBox );
// test outlines
sal_Int32 nPage1OL = aWriter.CreateOutlineItem();
aWriter.SetOutlineItemText( nPage1OL, OUString( "Page 1" ) );
aWriter.SetOutlineItemDest( nPage1OL, nSecondDest );
aWriter.CreateOutlineItem( nPage1OL, OUString( "Dest 2" ), nSecondDest );
aWriter.CreateOutlineItem( nPage1OL, OUString( "Dest 2 revisited" ), nSecondDest );
aWriter.CreateOutlineItem( nPage1OL, OUString( "Dest 2 again" ), nSecondDest );
sal_Int32 nPage2OL = aWriter.CreateOutlineItem();
aWriter.SetOutlineItemText( nPage2OL, OUString( "Page 2" ) );
aWriter.CreateOutlineItem( nPage2OL, OUString( "Dest 1" ), nFirstDest );
aWriter.EndStructureElement(); // close document
aWriter.Emit();
}
#endif
static const sal_Int32 nLog10Divisor = 1;
static const double fDivisor = 10.0;
static inline double pixelToPoint( double px ) { return px/fDivisor; }
static inline sal_Int32 pointToPixel( double pt ) { return sal_Int32(pt*fDivisor); }
const sal_uInt8 PDFWriterImpl::s_nPadString[32] =
{
0x28, 0xBF, 0x4E, 0x5E, 0x4E, 0x75, 0x8A, 0x41, 0x64, 0x00, 0x4E, 0x56, 0xFF, 0xFA, 0x01, 0x08,
0x2E, 0x2E, 0x00, 0xB6, 0xD0, 0x68, 0x3E, 0x80, 0x2F, 0x0C, 0xA9, 0xFE, 0x64, 0x53, 0x69, 0x7A
};
static void appendHex( sal_Int8 nInt, OStringBuffer& rBuffer )
{
static const sal_Char pHexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
rBuffer.append( pHexDigits[ (nInt >> 4) & 15 ] );
rBuffer.append( pHexDigits[ nInt & 15 ] );
}
static void appendName( const OUString& rStr, OStringBuffer& rBuffer )
{
// FIXME i59651 add a check for max length of 127 chars? Per PDF spec 1.4, appendix C.1
// I guess than when reading the #xx sequence it will count for a single character.
OString aStr( OUStringToOString( rStr, RTL_TEXTENCODING_UTF8 ) );
const sal_Char* pStr = aStr.getStr();
int nLen = aStr.getLength();
for( int i = 0; i < nLen; i++ )
{
/* #i16920# PDF recommendation: output UTF8, any byte
* outside the interval [33(=ASCII'!');126(=ASCII'~')]
* should be escaped hexadecimal
* for the sake of ghostscript which also reads PDF
* but has a narrower acceptance rate we only pass
* alphanumerics and '-' literally.
*/
if( (pStr[i] >= 'A' && pStr[i] <= 'Z' ) ||
(pStr[i] >= 'a' && pStr[i] <= 'z' ) ||
(pStr[i] >= '0' && pStr[i] <= '9' ) ||
pStr[i] == '-' )
{
rBuffer.append( pStr[i] );
}
else
{
rBuffer.append( '#' );
appendHex( (sal_Int8)pStr[i], rBuffer );
}
}
}
static void appendName( const sal_Char* pStr, OStringBuffer& rBuffer )
{
//FIXME i59651 see above
while( pStr && *pStr )
{
if( (*pStr >= 'A' && *pStr <= 'Z' ) ||
(*pStr >= 'a' && *pStr <= 'z' ) ||
(*pStr >= '0' && *pStr <= '9' ) ||
*pStr == '-' )
{
rBuffer.append( *pStr );
}
else
{
rBuffer.append( '#' );
appendHex( (sal_Int8)*pStr, rBuffer );
}
pStr++;
}
}
//used only to emit encoded passwords
static void appendLiteralString( const sal_Char* pStr, sal_Int32 nLength, OStringBuffer& rBuffer )
{
while( nLength )
{
switch( *pStr )
{
case '\n' :
rBuffer.append( "\\n" );
break;
case '\r' :
rBuffer.append( "\\r" );
break;
case '\t' :
rBuffer.append( "\\t" );
break;
case '\b' :
rBuffer.append( "\\b" );
break;
case '\f' :
rBuffer.append( "\\f" );
break;
case '(' :
case ')' :
case '\\' :
rBuffer.append( "\\" );
rBuffer.append( (sal_Char) *pStr );
break;
default:
rBuffer.append( (sal_Char) *pStr );
break;
}
pStr++;
nLength--;
}
}
/**--->i56629
* Convert a string before using it.
*
* This string conversion function is needed because the destination name
* in a PDF file seen through an Internet browser should be
* specially crafted, in order to be used directly by the browser.
* In this way the fragment part of a hyperlink to a PDF file (e.g. something
* as 'test1/test2/a-file.pdf\#thefragment) will be (hopefully) interpreted by the
* PDF reader (currently only Adobe Reader plug-in seems to be working that way) called
* from inside the Internet browser as: 'open the file test1/test2/a-file.pdf
* and go to named destination thefragment using default zoom'.
* The conversion is needed because in case of a fragment in the form: Slide%201
* (meaning Slide 1) as it is converted obeying the Inet rules, it will become Slide25201
* using this conversion, in both the generated named destinations, fragment and GoToR
* destination.
*
* The names for destinations are name objects and so they don't need to be encrypted
* even though they expose the content of PDF file (e.g. guessing the PDF content from the
* destination name).
*
* Fhurter limitation: it is advisable to use standard ASCII characters for
* OOo bookmarks.
*/
static void appendDestinationName( const OUString& rString, OStringBuffer& rBuffer )
{
const sal_Unicode* pStr = rString.getStr();
sal_Int32 nLen = rString.getLength();
for( int i = 0; i < nLen; i++ )
{
sal_Unicode aChar = pStr[i];
if( (aChar >= '0' && aChar <= '9' ) ||
(aChar >= 'a' && aChar <= 'z' ) ||
(aChar >= 'A' && aChar <= 'Z' ) ||
aChar == '-' )
{
rBuffer.append((sal_Char)aChar);
}
else
{
sal_Int8 aValueHigh = sal_Int8(aChar >> 8);
if(aValueHigh > 0)
appendHex( aValueHigh, rBuffer );
appendHex( (sal_Int8)(aChar & 255 ), rBuffer );
}
}
}
//<--- i56629
static void appendUnicodeTextString( const OUString& rString, OStringBuffer& rBuffer )
{
rBuffer.append( "FEFF" );
const sal_Unicode* pStr = rString.getStr();
sal_Int32 nLen = rString.getLength();
for( int i = 0; i < nLen; i++ )
{
sal_Unicode aChar = pStr[i];
appendHex( (sal_Int8)(aChar >> 8), rBuffer );
appendHex( (sal_Int8)(aChar & 255 ), rBuffer );
}
}
void PDFWriterImpl::createWidgetFieldName( sal_Int32 i_nWidgetIndex, const PDFWriter::AnyWidget& i_rControl )
{
/* #i80258# previously we use appendName here
however we need a slightly different coding scheme than the normal
name encoding for field names
*/
const OUString& rName = (m_aContext.Version > PDFWriter::PDF_1_2) ? i_rControl.Name : i_rControl.Text;
OString aStr( OUStringToOString( rName, RTL_TEXTENCODING_UTF8 ) );
const sal_Char* pStr = aStr.getStr();
int nLen = aStr.getLength();
OStringBuffer aBuffer( rName.getLength()+64 );
for( int i = 0; i < nLen; i++ )
{
/* #i16920# PDF recommendation: output UTF8, any byte
* outside the interval [32(=ASCII' ');126(=ASCII'~')]
* should be escaped hexadecimal
*/
if( (pStr[i] >= 32 && pStr[i] <= 126 ) )
aBuffer.append( pStr[i] );
else
{
aBuffer.append( '#' );
appendHex( (sal_Int8)pStr[i], aBuffer );
}
}
OString aFullName( aBuffer.makeStringAndClear() );
/* #i82785# create hierarchical fields down to the for each dot in i_rName */
sal_Int32 nTokenIndex = 0, nLastTokenIndex = 0;
OString aPartialName;
OString aDomain;
do
{
nLastTokenIndex = nTokenIndex;
aPartialName = aFullName.getToken( 0, '.', nTokenIndex );
if( nTokenIndex != -1 )
{
// find or create a hierarchical field
// first find the fully qualified name up to this field
aDomain = aFullName.copy( 0, nTokenIndex-1 );
boost::unordered_map< OString, sal_Int32, OStringHash >::const_iterator it = m_aFieldNameMap.find( aDomain );
if( it == m_aFieldNameMap.end() )
{
// create new hierarchy field
sal_Int32 nNewWidget = m_aWidgets.size();
m_aWidgets.push_back( PDFWidget() );
m_aWidgets[nNewWidget].m_nObject = createObject();
m_aWidgets[nNewWidget].m_eType = PDFWriter::Hierarchy;
m_aWidgets[nNewWidget].m_aName = aPartialName;
m_aWidgets[i_nWidgetIndex].m_nParent = m_aWidgets[nNewWidget].m_nObject;
m_aFieldNameMap[aDomain] = nNewWidget;
m_aWidgets[i_nWidgetIndex].m_nParent = m_aWidgets[nNewWidget].m_nObject;
if( nLastTokenIndex > 0 )
{
// this field is not a root field and
// needs to be inserted to its parent
OString aParentDomain( aDomain.copy( 0, nLastTokenIndex-1 ) );
it = m_aFieldNameMap.find( aParentDomain );
OSL_ENSURE( it != m_aFieldNameMap.end(), "field name not found" );
if( it != m_aFieldNameMap.end() )
{
OSL_ENSURE( it->second < sal_Int32(m_aWidgets.size()), "invalid field number entry" );
if( it->second < sal_Int32(m_aWidgets.size()) )
{
PDFWidget& rParentField( m_aWidgets[it->second] );
rParentField.m_aKids.push_back( m_aWidgets[nNewWidget].m_nObject );
rParentField.m_aKidsIndex.push_back( nNewWidget );
m_aWidgets[nNewWidget].m_nParent = rParentField.m_nObject;
}
}
}
}
else if( m_aWidgets[it->second].m_eType != PDFWriter::Hierarchy )
{
// this is invalid, someone tries to have a terminal field as parent
// example: a button with the name foo.bar exists and
// another button is named foo.bar.no
// workaround: put the second terminal field as much up in the hierarchy as
// necessary to have a non-terminal field as parent (or none at all)
// since it->second already is terminal, we just need to use its parent
aDomain.clear();
aPartialName = aFullName.copy( aFullName.lastIndexOf( '.' )+1 );
if( nLastTokenIndex > 0 )
{
aDomain = aFullName.copy( 0, nLastTokenIndex-1 );
OStringBuffer aBuf( aDomain.getLength() + 1 + aPartialName.getLength() );
aBuf.append( aDomain );
aBuf.append( '.' );
aBuf.append( aPartialName );
aFullName = aBuf.makeStringAndClear();
}
else
aFullName = aPartialName;
break;
}
}
} while( nTokenIndex != -1 );
// insert widget into its hierarchy field
if( !aDomain.isEmpty() )
{
boost::unordered_map< OString, sal_Int32, OStringHash >::const_iterator it = m_aFieldNameMap.find( aDomain );
if( it != m_aFieldNameMap.end() )
{
OSL_ENSURE( it->second >= 0 && it->second < sal_Int32( m_aWidgets.size() ), "invalid field index" );
if( it->second >= 0 && it->second < sal_Int32(m_aWidgets.size()) )
{
m_aWidgets[i_nWidgetIndex].m_nParent = m_aWidgets[it->second].m_nObject;
m_aWidgets[it->second].m_aKids.push_back( m_aWidgets[i_nWidgetIndex].m_nObject);
m_aWidgets[it->second].m_aKidsIndex.push_back( i_nWidgetIndex );
}
}
}
if( aPartialName.isEmpty() )
{
// how funny, an empty field name
if( i_rControl.getType() == PDFWriter::RadioButton )
{
aPartialName = "RadioGroup";
aPartialName += OString::number( static_cast<const PDFWriter::RadioButtonWidget&>(i_rControl).RadioGroup );
}
else
aPartialName = OString( "Widget" );
}
if( ! m_aContext.AllowDuplicateFieldNames )
{
boost::unordered_map<OString, sal_Int32, OStringHash>::iterator it = m_aFieldNameMap.find( aFullName );
if( it != m_aFieldNameMap.end() ) // not unique
{
boost::unordered_map< OString, sal_Int32, OStringHash >::const_iterator check_it;
OString aTry;
sal_Int32 nTry = 2;
do
{
OStringBuffer aUnique( aFullName.getLength() + 16 );
aUnique.append( aFullName );
aUnique.append( '_' );
aUnique.append( nTry++ );
aTry = aUnique.makeStringAndClear();
check_it = m_aFieldNameMap.find( aTry );
} while( check_it != m_aFieldNameMap.end() );
aFullName = aTry;
m_aFieldNameMap[ aFullName ] = i_nWidgetIndex;
aPartialName = aFullName.copy( aFullName.lastIndexOf( '.' )+1 );
}
else
m_aFieldNameMap[ aFullName ] = i_nWidgetIndex;
}
// finally
m_aWidgets[i_nWidgetIndex].m_aName = aPartialName;
}
static void appendFixedInt( sal_Int32 nValue, OStringBuffer& rBuffer, sal_Int32 nPrecision = nLog10Divisor )
{
if( nValue < 0 )
{
rBuffer.append( '-' );
nValue = -nValue;
}
sal_Int32 nFactor = 1, nDiv = nPrecision;
while( nDiv-- )
nFactor *= 10;
sal_Int32 nInt = nValue / nFactor;
rBuffer.append( nInt );
if( nFactor > 1 )
{
sal_Int32 nDecimal = nValue % nFactor;
if( nDecimal )
{
rBuffer.append( '.' );
// omit trailing zeros
while( (nDecimal % 10) == 0 )
nDecimal /= 10;
rBuffer.append( nDecimal );
}
}
}
// appends a double. PDF does not accept exponential format, only fixed point
static void appendDouble( double fValue, OStringBuffer& rBuffer, sal_Int32 nPrecision = 5 )
{
bool bNeg = false;
if( fValue < 0.0 )
{
bNeg = true;
fValue=-fValue;
}
sal_Int64 nInt = (sal_Int64)fValue;
fValue -= (double)nInt;
// optimizing hardware may lead to a value of 1.0 after the subtraction
if( fValue == 1.0 || log10( 1.0-fValue ) <= -nPrecision )
{
nInt++;
fValue = 0.0;
}
sal_Int64 nFrac = 0;
if( fValue )
{
fValue *= pow( 10.0, (double)nPrecision );
nFrac = (sal_Int64)fValue;
}
if( bNeg && ( nInt || nFrac ) )
rBuffer.append( '-' );
rBuffer.append( nInt );
if( nFrac )
{
int i;
rBuffer.append( '.' );
sal_Int64 nBound = (sal_Int64)(pow( 10.0, nPrecision - 1.0 )+0.5);
for ( i = 0; ( i < nPrecision ) && nFrac; i++ )
{
sal_Int64 nNumb = nFrac / nBound;
nFrac -= nNumb * nBound;
rBuffer.append( nNumb );
nBound /= 10;
}
}
}
static void appendColor( const Color& rColor, OStringBuffer& rBuffer, bool bConvertToGrey = false )
{
if( rColor != Color( COL_TRANSPARENT ) )
{
if( bConvertToGrey )
{
sal_uInt8 cByte = rColor.GetLuminance();
appendDouble( (double)cByte / 255.0, rBuffer );
}
else
{
appendDouble( (double)rColor.GetRed() / 255.0, rBuffer );
rBuffer.append( ' ' );
appendDouble( (double)rColor.GetGreen() / 255.0, rBuffer );
rBuffer.append( ' ' );
appendDouble( (double)rColor.GetBlue() / 255.0, rBuffer );
}
}
}
void PDFWriterImpl::appendStrokingColor( const Color& rColor, OStringBuffer& rBuffer )
{
if( rColor != Color( COL_TRANSPARENT ) )
{
bool bGrey = m_aContext.ColorMode == PDFWriter::DrawGreyscale;
appendColor( rColor, rBuffer, bGrey );
rBuffer.append( bGrey ? " G" : " RG" );
}
}
void PDFWriterImpl::appendNonStrokingColor( const Color& rColor, OStringBuffer& rBuffer )
{
if( rColor != Color( COL_TRANSPARENT ) )
{
bool bGrey = m_aContext.ColorMode == PDFWriter::DrawGreyscale;
appendColor( rColor, rBuffer, bGrey );
rBuffer.append( bGrey ? " g" : " rg" );
}
}
// matrix helper class
// TODO: use basegfx matrix class instead or derive from it
namespace vcl // TODO: use anonymous namespace to keep this class local
{
/* for sparse matrices of the form (2D linear transformations)
* f[0] f[1] 0
* f[2] f[3] 0
* f[4] f[5] 1
*/
class Matrix3
{
double f[6];
void set( double *pn ) { for( int i = 0 ; i < 6; i++ ) f[i] = pn[i]; }
public:
Matrix3();
~Matrix3() {}
void skew( double alpha, double beta );
void scale( double sx, double sy );
void rotate( double angle );
void translate( double tx, double ty );
bool invert();
void append( PDFWriterImpl::PDFPage& rPage, OStringBuffer& rBuffer, Point* pBack = NULL );
Point transform( const Point& rPoint ) const;
};
}
Matrix3::Matrix3()
{
// initialize to unity
f[0] = 1.0;
f[1] = 0.0;
f[2] = 0.0;
f[3] = 1.0;
f[4] = 0.0;
f[5] = 0.0;
}
Point Matrix3::transform( const Point& rOrig ) const
{
double x = (double)rOrig.X(), y = (double)rOrig.Y();
return Point( (int)(x*f[0] + y*f[2] + f[4]), (int)(x*f[1] + y*f[3] + f[5]) );
}
void Matrix3::skew( double alpha, double beta )
{
double fn[6];
double tb = tan( beta );
fn[0] = f[0] + f[2]*tb;
fn[1] = f[1];
fn[2] = f[2] + f[3]*tb;
fn[3] = f[3];
fn[4] = f[4] + f[5]*tb;
fn[5] = f[5];
if( alpha != 0.0 )
{
double ta = tan( alpha );
fn[1] += f[0]*ta;
fn[3] += f[2]*ta;
fn[5] += f[4]*ta;
}
set( fn );
}
void Matrix3::scale( double sx, double sy )
{
double fn[6];
fn[0] = sx*f[0];
fn[1] = sy*f[1];
fn[2] = sx*f[2];
fn[3] = sy*f[3];
fn[4] = sx*f[4];