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koffice/lib/kofficecore/KoPictureShared.cpp

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/* This file is part of the KDE project
Copyright (c) 2001 Simon Hausmann <hausmann@kde.org>
Copyright (C) 2002, 2003, 2004 Nicolas GOUTTE <goutte@kde.org>
This library 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 library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <tqpainter.h>
#include <tqfile.h>
#include <kdebug.h>
#include <kurl.h>
#include <kfilterdev.h>
#include <tdeio/netaccess.h>
#include "KoPictureKey.h"
#include "KoPictureBase.h"
#include "KoPictureImage.h"
#include "KoPictureEps.h"
#include "KoPictureClipart.h"
#include "KoPictureWmf.h"
#include "KoPictureShared.h"
#include <kmdcodec.h>
KoPictureShared::KoPictureShared(void) : m_base(NULL)
{
}
void KoPictureShared::assignPictureId( uint _id)
{
m_pictureId = _id;
}
TQString KoPictureShared::uniquePictureId() const
{
return "Pictures"+ TQString::number(m_pictureId);
}
KoPictureShared::~KoPictureShared(void)
{
delete m_base;
}
KoPictureShared::KoPictureShared(const KoPictureShared &other)
: TQShared() // Some compilers want it explicitly!
{
// We need to use newCopy, because we want a real copy, not just a copy of the part of KoPictureBase
if (other.m_base)
m_base=other.m_base->newCopy();
else
m_base=NULL;
}
KoPictureShared& KoPictureShared::operator=( const KoPictureShared &other )
{
clear();
kdDebug(30003) << "KoPictureShared::= before" << endl;
if (other.m_base)
m_base=other.m_base->newCopy();
kdDebug(30003) << "KoPictureShared::= after" << endl;
return *this;
}
KoPictureType::Type KoPictureShared::getType(void) const
{
if (m_base)
return m_base->getType();
return KoPictureType::TypeUnknown;
}
bool KoPictureShared::isNull(void) const
{
if (m_base)
return m_base->isNull();
return true;
}
void KoPictureShared::draw(TQPainter& painter, int x, int y, int width, int height, int sx, int sy, int sw, int sh, bool fastMode)
{
if (m_base)
m_base->draw(painter, x, y, width, height, sx, sy, sw, sh, fastMode);
else
{
// Draw a red box (easier DEBUG)
kdWarning(30003) << "Drawing red rectangle! (KoPictureShared::draw)" << endl;
painter.save();
painter.setBrush(TQColor(255,0,0));
painter.drawRect(x,y,width,height);
painter.restore();
}
}
bool KoPictureShared::loadWmf(TQIODevice* io)
{
kdDebug(30003) << "KoPictureShared::loadWmf" << endl;
if (!io)
{
kdError(30003) << "No TQIODevice!" << endl;
return false;
}
clear();
// The extension .wmf was used (KOffice 1.1.x) for TQPicture files
// For an extern file or in the storage, .wmf can mean a real Windows Meta File.
TQByteArray array ( io->readAll() );
if ((array[0]=='Q') && (array[1]=='P') &&(array[2]=='I') && (array[3]=='C'))
{
m_base=new KoPictureClipart();
setExtension("qpic");
}
else
{
m_base=new KoPictureWmf();
setExtension("wmf");
}
return m_base->loadData(array, m_extension);
}
bool KoPictureShared::loadTmp(TQIODevice* io)
// We have a temp file, probably from a downloaded file
// We must check the file type
{
kdDebug(30003) << "KoPictureShared::loadTmp" << endl;
if (!io)
{
kdError(30003) << "No TQIODevice!" << endl;
return false;
}
// The extension .wmf was used (KOffice 1.1.x) for TQPicture files
// For an extern file or in the storage, .wmf can mean a real Windows Meta File.
TQByteArray array ( io->readAll() );
return identifyAndLoad( array );
}
bool KoPictureShared::identifyAndLoad( TQByteArray array )
{
if ( array.size() < 5 )
{
kdError(30003) << "Picture is less than 5 bytes long!" << endl;
return false;
}
TQString strExtension;
bool flag=false;
// Try to find the file type by comparing magic on the first few bytes!
// ### TODO: could not TQImageIO::imageFormat do it too? (At least most of them?)
if ((array[0]==char(0x89)) && (array[1]=='P') &&(array[2]=='N') && (array[3]=='G'))
{
strExtension="png";
}
else if ((array[0]==char(0xff)) && (array[1]==char(0xd8)) &&(array[2]==char(0xff)) && (array[3]==char(0xe0)))
{
strExtension="jpeg";
}
else if ((array[0]=='B') && (array[1]=='M'))
{
strExtension="bmp";
}
else if ((array[0]==char(0xd7)) && (array[1]==char(0xcd)) &&(array[2]==char(0xc6)) && (array[3]==char(0x9a)))
{
strExtension="wmf";
}
else if ((array[0]=='<') && (array[1]=='?') && ( array[2]=='x' ) && (array[3]=='m') && ( array[4]=='l' ) )
{
strExtension="svg";
}
else if ((array[0]=='Q') && (array[1]=='P') &&(array[2]=='I') && (array[3]=='C'))
{
strExtension="qpic";
}
else if ((array[0]=='%') && (array[1]=='!') &&(array[2]=='P') && (array[3]=='S'))
{
strExtension="eps";
}
else if ((array[0]==char(0xc5)) && (array[1]==char(0xd0)) && (array[2]==char(0xd3)) && (array[3]==char(0xc6)))
{
// So called "MS-DOS EPS file"
strExtension="eps";
}
else if ((array[0]=='G') && (array[1]=='I') && (array[2]=='F') && (array[3]=='8'))
{
// GIF (87a or 89a)
strExtension="gif";
}
else if ( ( array[0] == char( 0037 ) ) && ( array[1] == char( 0213 ) ) )
{
// Gzip
TQBuffer buffer(array);
buffer.open(IO_ReadOnly);
const bool flag = loadCompressed( TQT_TQIODEVICE(&buffer), "application/x-gzip", "tmp" );
buffer.close();
return flag;
}
else if ( ( array[0] == 'B' ) && ( array[1] == 'Z' ) && ( array[2] == 'h') )
{
// BZip2
TQBuffer buffer(array);
buffer.open(IO_ReadOnly);
const bool flag = loadCompressed( TQT_TQIODEVICE(&buffer), "application/x-bzip2", "tmp" );
buffer.close();
return flag;
}
else
{
kdDebug(30003) << "Cannot identify the type of temp file!"
<< " Trying to convert to PNG! (in KoPictureShared::loadTmp" << endl;
// Do not trust TQBuffer and do not work directly on the TQByteArray array
// DF: It would be faster to work on array here, and to create a completely
// different TQBuffer for the writing code!
TQBuffer buf( array.copy() );
if (!buf.open(IO_ReadOnly))
{
kdError(30003) << "Could not open read buffer!" << endl;
return false;
}
TQImageIO imageIO(&buf,NULL);
if (!imageIO.read())
{
kdError(30003) << "Could not read image!" << endl;
return false;
}
buf.close();
if ( !buf.open( IO_WriteOnly | IO_Truncate ) )
{
kdError(30003) << "Could not open write buffer!" << endl;
return false;
}
imageIO.setIODevice(TQT_TQIODEVICE(&buf));
imageIO.setFormat("PNG");
if (!imageIO.write())
{
kdError(30003) << "Could not write converted image!" << endl;
return false;
}
buf.close();
array = buf.buffer();
strExtension="png";
}
kdDebug(30003) << "Temp file considered to be " << strExtension << endl;
clearAndSetMode(strExtension);
if (m_base)
flag = m_base->loadData(array,strExtension);
setExtension(strExtension);
return flag;
}
bool KoPictureShared::loadXpm(TQIODevice* io)
{
kdDebug(30003) << "KoPictureShared::loadXpm" << endl;
if (!io)
{
kdError(30003) << "No TQIODevice!" << endl;
return false;
}
clear();
// Old KPresenter XPM files have char(1) instead of some "
// Therefore we need to treat XPM separately
TQByteArray array=io->readAll();
// As XPM files are normally only ASCII files, we can replace it without problems
int pos=0;
while ((pos=array.find(char(1),pos))!=-1)
{
array[pos]='"';
}
// Now that the XPM file is corrected, we need to load it.
m_base=new KoPictureImage();
TQBuffer buffer(array);
bool check = m_base->load(TQT_TQIODEVICE(&buffer),"xpm");
setExtension("xpm");
return check;
}
bool KoPictureShared::save(TQIODevice* io) const
{
if (!io)
return false;
if (m_base)
return m_base->save(io);
return false;
}
bool KoPictureShared::saveAsBase64( KoXmlWriter& writer ) const
{
if ( m_base )
m_base->saveAsBase64( writer );
return false;
}
void KoPictureShared::clear(void)
{
// Clear does not reset the key m_key!
delete m_base;
m_base=NULL;
}
void KoPictureShared::clearAndSetMode(const TQString& newMode)
{
delete m_base;
m_base=NULL;
const TQString mode=newMode.lower();
if ((mode=="svg") || (mode=="qpic"))
{
m_base=new KoPictureClipart();
}
else if (mode=="wmf")
{
m_base=new KoPictureWmf();
}
else if ( (mode=="eps") || (mode=="epsi") || (mode=="epsf") )
{
m_base=new KoPictureEps();
}
else
{ // TODO: test if TQImageIO really knows the file format
m_base=new KoPictureImage();
}
}
TQString KoPictureShared::getExtension(void) const
{
return m_extension;
}
void KoPictureShared::setExtension(const TQString& extension)
{
m_extension = extension;
}
TQString KoPictureShared::getMimeType(void) const
{
if (m_base)
return m_base->getMimeType(m_extension);
return TQString(NULL_MIME_TYPE);
}
bool KoPictureShared::loadFromBase64( const TQCString& str )
{
clear();
TQByteArray data;
KCodecs::base64Decode( str, data );
return identifyAndLoad( data );
}
bool KoPictureShared::load(TQIODevice* io, const TQString& extension)
{
kdDebug(30003) << "KoPictureShared::load(TQIODevice*, const TQString&) " << extension << endl;
bool flag=false;
TQString ext(extension.lower());
if (ext=="wmf")
flag=loadWmf(io);
else if (ext=="tmp") // ### TODO: also remote scripts need this, don't they?
flag=loadTmp(io);
else if ( ext == "bz2" )
{
flag = loadCompressed( io, "application/x-bzip2", "tmp" );
}
else if ( ext == "gz" )
{
flag = loadCompressed( io, "application/x-gzip", "tmp" );
}
else if ( ext == "svgz" )
{
flag = loadCompressed( io, "application/x-gzip", "svg" );
}
else
{
clearAndSetMode(ext);
if (m_base)
flag = m_base->load(io, ext);
setExtension(ext);
}
if (!flag)
{
kdError(30003) << "File was not loaded! (KoPictureShared::load)" << endl;
}
return flag;
}
bool KoPictureShared::loadFromFile(const TQString& fileName)
{
kdDebug(30003) << "KoPictureShared::loadFromFile " << fileName << endl;
if ( fileName.isEmpty() )
{
kdError(30003) << "Cannot load file with empty name!" << endl;
return false;
}
TQFile file(fileName);
if (!file.open(IO_ReadOnly))
return false;
bool flag = false;
const int pos=fileName.findRev('.');
if (pos==-1)
{
kdDebug(30003) << "File with no extension!" << endl;
// As we have no extension, consider it like a temporary file
flag = loadTmp( TQT_TQIODEVICE(&file) );
}
else
{
const TQString extension( fileName.mid( pos+1 ) );
// ### TODO: check if the extension if gz or bz2 and find the previous extension
flag = load( TQT_TQIODEVICE(&file), extension );
}
file.close();
return flag;
}
TQSize KoPictureShared::getOriginalSize(void) const
{
if (m_base)
return m_base->getOriginalSize();
return TQSize(0,0);
}
TQPixmap KoPictureShared::generatePixmap(const TQSize& size, bool smoothScale)
{
if (m_base)
return m_base->generatePixmap(size, smoothScale);
return TQPixmap();
}
TQDragObject* KoPictureShared::dragObject( TQWidget *dragSource, const char *name )
{
if (m_base)
return m_base->dragObject( dragSource, name );
return 0L;
}
TQImage KoPictureShared::generateImage(const TQSize& size)
{
if (m_base)
return m_base->generateImage( size );
return TQImage();
}
bool KoPictureShared::hasAlphaBuffer() const
{
if (m_base)
return m_base->hasAlphaBuffer();
return false;
}
void KoPictureShared::setAlphaBuffer(bool enable)
{
if (m_base)
m_base->setAlphaBuffer(enable);
}
TQImage KoPictureShared::createAlphaMask(int conversion_flags) const
{
if (m_base)
return m_base->createAlphaMask(conversion_flags);
return TQImage();
}
void KoPictureShared::clearCache(void)
{
if (m_base)
m_base->clearCache();
}
bool KoPictureShared::loadCompressed( TQIODevice* io, const TQString& mimeType, const TQString& extension )
{
// ### TODO: check that we do not have an endless recursion
TQIODevice* in = KFilterDev::device( io, mimeType, false);
if ( !in )
{
kdError(30003) << "Cannot create device for uncompressing! Aborting!" << endl;
return false;
}
if ( !in->open( IO_ReadOnly ) )
{
kdError(30003) << "Cannot open file for uncompressing! Aborting!" << endl;
delete in;
return false;
}
const bool flag = load( in, extension );
in->close();
delete in;
return flag;
}
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