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Diffstat (limited to 'tqtinterface/qt4/src/kernel/tqmime.cpp')
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diff --git a/tqtinterface/qt4/src/kernel/tqmime.cpp b/tqtinterface/qt4/src/kernel/tqmime.cpp deleted file mode 100644 index 943ba55..0000000 --- a/tqtinterface/qt4/src/kernel/tqmime.cpp +++ /dev/null @@ -1,1158 +0,0 @@ -/**************************************************************************** -** -** Implementation of MIME support -** -** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA. -** -** This file is part of the kernel module of the TQt GUI Toolkit. -** -** This file may be used under the terms of the GNU General -** Public License versions 2.0 or 3.0 as published by the Free -** Software Foundation and appearing in the files LICENSE.GPL2 -** and LICENSE.GPL3 included in the packaging of this file. -** Alternatively you may (at your option) use any later version -** of the GNU General Public License if such license has been -** publicly approved by Trolltech ASA (or its successors, if any) -** and the KDE Free TQt Foundation. -** -** Please review the following information to ensure GNU General -** Public Licensing requirements will be met: -** http://trolltech.com/products/qt/licenses/licensing/opensource/. -** If you are unsure which license is appropriate for your use, please -** review the following information: -** http://trolltech.com/products/qt/licenses/licensing/licensingoverview -** or contact the sales department at [email protected]. -** -** This file may be used under the terms of the Q Public License as -** defined by Trolltech ASA and appearing in the file LICENSE.TQPL -** included in the packaging of this file. Licensees holding valid TQt -** Commercial licenses may use this file in accordance with the TQt -** Commercial License Agreement provided with the Software. -** -** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, -** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted -** herein. -** -**********************************************************************/ - -#include "tqmime.h" - -#ifndef TQT_NO_MIME - -#include "tqmap.h" -#include "tqstringlist.h" -#include "tqfileinfo.h" -#include "tqdir.h" -#include "tqdragobject.h" -#include "tqcleanuphandler.h" -#include "tqapplication.h" // ### for now -#include "tqclipboard.h" // ### for now - -#ifdef USE_QT4 - -#include "Qt/qmap.h" -#include "Qt/qstringlist.h" -#include "Qt/qfileinfo.h" -#include "Qt/qdir.h" -#include "tqdragobject.h" -#include "Qt/qpixmap.h" -#include "Qt/qimagereader.h" -#include "tqcleanuphandler.h" -#include "private/qt4_qtextimagehandler_p.h" - -#endif // USE_QT4 - -static int qt_mime_serial_number = 0; -static TQMimeSourceFactory* defaultfactory = 0; -static TQSingleCleanupHandler<TQMimeSourceFactory> qmime_cleanup_factory; - -#ifdef USE_QT4 -// #if 0 - -TQMimeSource::TQMimeSource() : QMimeSource() { - cacheType = NoCache; - ser_no = qt_mime_serial_number++; -} - -/*! - \fn int TQMimeSource::serialNumber() const - - Returns the mime source's globally unique serial number. -*/ - - -void TQMimeSource::clearCache() -{ - if ( cacheType == Text ) { - delete cache.txt.str; - delete cache.txt.subtype; - cache.txt.str = 0; - cache.txt.subtype = 0; - } else if ( cacheType == Graphics ) { - delete cache.gfx.img; - delete cache.gfx.pix; - cache.gfx.img = 0; - cache.gfx.pix = 0; - } - cacheType = NoCache; -} - -#else // USE_QT4 - -/*! - \class TQMimeSource tqmime.h - \brief The TQMimeSource class is an abstraction of objects which provide formatted data of a certain MIME type. - - \ingroup io - \ingroup draganddrop - \ingroup misc - - \link dnd.html Drag-and-drop\endlink and - \link TQClipboard clipboard\endlink use this abstraction. - - \sa \link http://www.isi.edu/in-notes/iana/assignments/media-types/ - IANA list of MIME media types\endlink -*/ - -/*! - Constructs a mime source and assigns a globally unique serial - number to it. - - \sa serialNumber() -*/ - -TQMimeSource::TQMimeSource() -{ - ser_no = qt_mime_serial_number++; - cacheType = NoCache; -} - -/*! - \fn int TQMimeSource::serialNumber() const - - Returns the mime source's globally unique serial number. -*/ - - -void TQMimeSource::clearCache() -{ - if ( cacheType == Text ) { - delete cache.txt.str; - delete cache.txt.subtype; - cache.txt.str = 0; - cache.txt.subtype = 0; - } else if ( cacheType == Graphics ) { - delete cache.gfx.img; - delete cache.gfx.pix; - cache.gfx.img = 0; - cache.gfx.pix = 0; - } - cacheType = NoCache; -} - -/*! - Provided to ensure that subclasses destroy themselves correctly. -*/ -TQMimeSource::~TQMimeSource() -{ -#ifndef TQT_NO_CLIPBOARD - extern void qt_clipboard_cleanup_mime_source(TQMimeSource *); - qt_clipboard_cleanup_mime_source(this); -#endif - clearCache(); -} - -/*! - \fn TQByteArray TQMimeSource::tqencodedData(const char*) const - - Returns the encoded data of this object in the specified MIME - format. - - Subclasses must reimplement this function. -*/ - - - -/*! - Returns TRUE if the object can provide the data in format \a - mimeType; otherwise returns FALSE. - - If you inherit from TQMimeSource, for consistency reasons it is - better to implement the more abstract canDecode() functions such - as TQTextDrag::canDecode() and TQImageDrag::canDecode(). -*/ -bool TQMimeSource::provides(const char* mimeType) const -{ - const char* fmt; - for (int i=0; (fmt = format(i)); i++) { - if ( !qstricmp(mimeType,fmt) ) - return TRUE; - } - return FALSE; -} - -#endif // USE_QT4 - -// #ifdef USE_QT4 -#if 0 - -QT_BEGIN_NAMESPACE - -class TQMimeSourceFactoryData { -public: - TQMimeSourceFactoryData() : - last(0) - { - } - - ~TQMimeSourceFactoryData() - { - QMap<QString, QMimeSource*>::Iterator it = stored.begin(); - while (it != stored.end()) { - delete *it; - ++it; - } - delete last; - } - - QMap<QString, QMimeSource*> stored; - QMap<QString, QString> extensions; - QStringList path; - QMimeSource* last; - QList<TQMimeSourceFactory*> factories; -}; - -static QImage richTextImageLoader(const QString &name, const QString &context) -{ - QImage img; - - const TQMimeSource *src = static_cast<const TQMimeSource*>(TQMimeSourceFactory::defaultFactory()->data(name, context)); - if (src && TQImageDrag::decode(src, img)) - return img; - - return QImage(); -} - -/*! - \class TQMimeSourceFactory - \brief The TQMimeSourceFactory class is an extensible provider of mime-typed data. - - \compat - - A TQMimeSourceFactory provides an abstract interface to a - collection of information. Each piece of information is - represented by a QMimeSource object which can be examined and - converted to concrete data types by functions such as - TQImageDrag::canDecode() and TQImageDrag::decode(). - - The base TQMimeSourceFactory can be used in two ways: as an - abstraction of a collection of files or as specifically stored - data. For it to access files, call setFilePath() before accessing - data. For stored data, call setData() for each item (there are - also convenience functions, e.g. setText(), setImage() and - setPixmap(), that simply call setData() with appropriate - parameters). - - The rich text widgets, QTextEdit and QTextBrowser, use - TQMimeSourceFactory to resolve references such as images or links - within rich text documents. They either access the default factory - (see \l{defaultFactory()}) or their own. Other classes that are - capable of displaying rich text (such as QLabel, QWhatsThis or - QMessageBox) always use the default factory. - - A factory can also be used as a container to store data associated - with a name. This technique is useful whenever rich text contains - images that are stored in the program itself, not loaded from the - hard disk. Your program may, for example, define some image data - as: - \snippet doc/src/snippets/code/src_qt3support_other_q3mimefactory.cpp 0 - - To be able to use this image within some rich text, for example - inside a QLabel, you must create a QImage from the raw data and - insert it into the factory with a unique name: - \snippet doc/src/snippets/code/src_qt3support_other_q3mimefactory.cpp 1 - - Now you can create a rich text QLabel with - - \snippet doc/src/snippets/code/src_qt3support_other_q3mimefactory.cpp 2 - - When no longer needed, you can clear the data from the factory: - - \snippet doc/src/snippets/code/src_qt3support_other_q3mimefactory.cpp 3 -*/ - - -/*! - Constructs a TQMimeSourceFactory that has no file path and no - stored content. -*/ -TQMimeSourceFactory::TQMimeSourceFactory() : - d(new TQMimeSourceFactoryData) -{ -// addFilePath(QLatin1String(":/qt/q3mimesourcefactory/")); //to get from the resources // Where did this come from??!?!?!? - // add some reasonable defaults - setExtensionType(QLatin1String("htm"), "text/html;charset=iso8859-1"); - setExtensionType(QLatin1String("html"), "text/html;charset=iso8859-1"); - setExtensionType(QLatin1String("txt"), "text/plain"); - setExtensionType(QLatin1String("xml"), "text/xml;charset=UTF-8"); - setExtensionType(QLatin1String("jpg"), "image/jpeg"); // support misspelled jpeg files -} - -/*! - Destroys the TQMimeSourceFactory, deleting all stored content. -*/ -TQMimeSourceFactory::~TQMimeSourceFactory() -{ - if (defaultFactory() == this) - defaultfactory = 0; - delete d; -} - -QMimeSource* TQMimeSourceFactory::dataInternal(const QString& abs_name, const QMap<QString, QString> &extensions) const -{ - QMimeSource* r = 0; - QStringList attempted_names(abs_name); - TQFileInfo fi(abs_name); - if (fi.isReadable()) { - // get the right mimetype - QString e = fi.extension(false); - QByteArray mimetype("application/octet-stream"); - if (extensions.contains(e)) - mimetype = TQT_TQSTRING(extensions[e]).latin1(); - if (!QImageReader::imageFormat(abs_name).isEmpty()) - mimetype = "application/x-qt-image"; - - TQFile f(abs_name); - if (f.open(QIODevice::ReadOnly) && f.size()) { - QByteArray ba; - ba.resize(f.size()); - f.readBlock(ba.data(), ba.size()); - TQStoredDrag* sr = new TQStoredDrag(mimetype); - sr->setEncodedData(TQT_TQBYTEARRAY_OBJECT(ba)); - delete d->last; - d->last = r = sr; - } - } - - // we didn't find the mime-source, so ask the default factory for - // the mime-source (this one will iterate over all installed ones) - // - // this looks dangerous, as this dataInternal() function will be - // called again when the default factory loops over all installed - // factories (including this), but the static bool looping in - // data() avoids endless recursions - if (!r && this != defaultFactory()) - r = (QMimeSource*)defaultFactory()->data(abs_name); - - return r; -} - - -/*! - Returns a reference to the data associated with \a abs_name. The - return value remains valid only until the next data() or setData() - call, so you should immediately decode the result. - - If there is no data associated with \a abs_name in the factory's - store, the factory tries to access the local filesystem. If \a - abs_name isn't an absolute file name, the factory will search for - it in all defined paths (see \l{setFilePath()}). - - The factory understands all the image formats supported by - QImageReader. Any other mime types are determined by the file name - extension. The default settings are - \snippet doc/src/snippets/code/src_qt3support_other_q3mimefactory.cpp 4 - The effect of these is that file names ending in "txt" will be - treated as text encoded in the local encoding; those ending in - "xml" will be treated as text encoded in Unicode UTF-8 encoding. - The text/html type is treated specially, since the encoding can be - specified in the html file itself. "html" or "htm" will be treated - as text encoded in the encoding specified by the html meta tag, if - none could be found, the charset of the mime type will be used. - The text subtype ("html", "plain", or "xml") does not affect the - factory, but users of the factory may behave differently. We - recommend creating "xml" files where practical. These files can be - viewed regardless of the runtime encoding and can encode any - Unicode characters without resorting to encoding definitions - inside the file. - - Any file data that is not recognized will be retrieved as a - QMimeSource providing the "application/octet-stream" mime type, - meaning uninterpreted binary data. - - You can add further extensions or change existing ones with - subsequent calls to setExtensionType(). If the extension mechanism - is not sufficient for your problem domain, you can inherit - TQMimeSourceFactory and reimplement this function to perform some - more specialized mime-type detection. The same applies if you want - to use the mime source factory to access URL referenced data over - a network. -*/ -const TQMimeSource *TQMimeSourceFactory::data(const QString& abs_name) const -{ - if (d->stored.contains(abs_name)) - return static_cast<TQMimeSource*>(d->stored[abs_name]); - - const QMimeSource *r = 0; - if (abs_name.isEmpty()) - return static_cast<const TQMimeSource*>(r); - QStringList::Iterator it; - if (abs_name[0] == QLatin1Char('/') -#ifdef Q_WS_WIN - || (abs_name[0].isLetter() && abs_name[1] == QLatin1Char(':')) || abs_name.startsWith(QLatin1String("\\\\")) -#endif - ) - { - // handle absolute file names directly - r = dataInternal(abs_name, d->extensions); - } - else { // check list of paths - for (it = d->path.begin(); !r && it != d->path.end(); ++it) { - QString filename = *it; - if (filename[(int)filename.length()-1] != QLatin1Char('/')) - filename += QLatin1Char('/'); - filename += abs_name; - r = dataInternal(filename, d->extensions); - } - } - - static bool looping = false; - if (!r && this == defaultFactory()) { - // we found no mime-source and we are the default factory, so - // we know all the other installed mime-source factories, so - // ask them - if (!looping) { - // to avoid endless recustions, don't enter the loop below - // if data() got called from within the loop below - looping = true; - for (int i = 0; i < d->factories.size(); ++i) { - const TQMimeSourceFactory *f = d->factories.at(i); - if (f == this) - continue; - r = static_cast<const QMimeSource *>(f->data(abs_name)); - if (r) { - looping = false; - return static_cast<const TQMimeSource*>(r); - } - } - looping = false; - } - } else if (!r) { - // we are not the default mime-source factory, so ask the - // default one for the mime-source, as this one will loop over - // all installed mime-source factories and ask these - r = static_cast<const QMimeSource *>(defaultFactory()->data(abs_name)); - } - return static_cast<const TQMimeSource*>(r); -} - -/*! - \fn void TQMimeSourceFactory::setFilePath(const QStringList &path) - \fn void TQMimeSourceFactory::setFilePath(const QString &path) - - Sets the list of directories that will be searched when named data - is requested to those given in the string list \a path. - - \sa filePath() -*/ -void TQMimeSourceFactory::setFilePath(const QStringList& path) -{ - d->path = path; -} - -/*! - Returns the currently set search paths. -*/ -TQStringList TQMimeSourceFactory::filePath() const -{ - return TQT_TQSTRINGLIST_OBJECT(d->path); -} - -/*! - Adds another search path, \a p to the existing search paths. - - \sa setFilePath() -*/ -void TQMimeSourceFactory::addFilePath(const QString& p) -{ - d->path += p; -} - -/*! - Sets the mime-type to be associated with the file name extension, - \a ext to \a mimetype. This determines the mime-type for files - found via the paths set by setFilePath(). -*/ -void TQMimeSourceFactory::setExtensionType(const QString& ext, const char* mimetype) -{ - d->extensions.insert(ext, QLatin1String(mimetype)); -} - -/*! - Converts the absolute or relative data item name \a - abs_or_rel_name to an absolute name, interpreted within the - context (path) of the data item named \a context (this must be an - absolute name). -*/ -TQString TQMimeSourceFactory::makeAbsolute(const QString& abs_or_rel_name, const QString& context) const -{ - if (context.isNull() || - !(context[0] == QLatin1Char('/') -#ifdef Q_WS_WIN - || (context[0].isLetter() && context[1] == QLatin1Char(':')) -#endif - )) - return abs_or_rel_name; - if (abs_or_rel_name.isEmpty()) - return context; - TQFileInfo c(context); - if (!c.isDir()) { - TQFileInfo r(c.dir(true), abs_or_rel_name); - return r.absFilePath(); - } else { - TQDir d(context); - TQFileInfo r(d, abs_or_rel_name); - return r.absFilePath(); - } -} - -/*! - \overload - A convenience function. See data(const QString& abs_name). The - file name is given in \a abs_or_rel_name and the path is in \a - context. -*/ -const TQMimeSource* TQMimeSourceFactory::data(const QString& abs_or_rel_name, const QString& context) const -{ - const QMimeSource* r = data(makeAbsolute(abs_or_rel_name,context)); - if (!r && !d->path.isEmpty()) - r = data(abs_or_rel_name); - return static_cast<const TQMimeSource*>(r); -} - - -/*! - Sets \a text to be the data item associated with the absolute name - \a abs_name. - - Equivalent to setData(abs_name, new TQTextDrag(text)). -*/ -void TQMimeSourceFactory::setText(const QString& abs_name, const QString& text) -{ - setData(abs_name, new TQTextDrag(text)); -} - -/*! - Sets \a image to be the data item associated with the absolute - name \a abs_name. - - Equivalent to setData(abs_name, new TQImageDrag(image)). -*/ -void TQMimeSourceFactory::setImage(const QString& abs_name, const QImage& image) -{ - setData(abs_name, new TQImageDrag(image)); -} - -/*! - Sets \a pixmap to be the data item associated with the absolute - name \a abs_name. -*/ -void TQMimeSourceFactory::setPixmap(const QString& abs_name, const QPixmap& pixmap) -{ - setData(abs_name, new TQImageDrag(TQT_TQPIXMAP_OBJECT(pixmap).convertToImage())); -} - -/*! - Sets \a data to be the data item associated with - the absolute name \a abs_name. Note that the ownership of \a data is - transferred to the factory: do not delete or access the pointer after - passing it to this function. - - Passing 0 for data removes previously stored data. -*/ -void TQMimeSourceFactory::setData(const QString& abs_name, QMimeSource* data) -{ - if (d->stored.contains(abs_name)) - delete d->stored[abs_name]; - d->stored.insert(abs_name,data); -} - - -/*! - Returns the application-wide default mime source factory. This - factory is used by rich text rendering classes such as - QSimpleRichText, QWhatsThis and QMessageBox to resolve named - references within rich text documents. It serves also as the - initial factory for the more complex render widgets, QTextEdit and - QTextBrowser. - - \sa setDefaultFactory() -*/ -TQMimeSourceFactory* TQMimeSourceFactory::defaultFactory() -{ - if (!defaultfactory) - { - defaultfactory = new TQMimeSourceFactory(); - qmime_cleanup_factory.set(&defaultfactory); - QTextImageHandler::externalLoader = richTextImageLoader; - } - return defaultfactory; -} - -/*! - Sets the default \a factory, destroying any previously set mime - source provider. The ownership of the factory is transferred to - Qt. - - \sa defaultFactory() -*/ -void TQMimeSourceFactory::setDefaultFactory(TQMimeSourceFactory* factory) -{ - if (!defaultfactory) - qmime_cleanup_factory.set(&defaultfactory); - else if (defaultfactory != factory) - delete defaultfactory; - defaultfactory = factory; -} - -/*! - Sets the defaultFactory() to 0 and returns the previous one. -*/ - -TQMimeSourceFactory* TQMimeSourceFactory::takeDefaultFactory() -{ - TQMimeSourceFactory *f = defaultfactory; - defaultfactory = 0; - return f; -} - -/*! - Adds the TQMimeSourceFactory \a f to the list of available - mimesource factories. If the defaultFactory() can't resolve a - data() it iterates over the list of installed mimesource factories - until the data can be resolved. - - \sa removeFactory() -*/ - -void TQMimeSourceFactory::addFactory(TQMimeSourceFactory *f) -{ - TQMimeSourceFactory::defaultFactory()->d->factories.append(f); -} - -/*! - Removes the mimesource factory \a f from the list of available - mimesource factories. - - \sa addFactory() -*/ - -void TQMimeSourceFactory::removeFactory(TQMimeSourceFactory *f) -{ - TQMimeSourceFactory::defaultFactory()->d->factories.removeAll(f); -} - -QPixmap qPixmapFromMimeSource(const QString &abs_name) -{ - const TQMimeSource *m = TQT_TQMIMESOURCE_CONST(TQMimeSourceFactory::defaultFactory()->data(abs_name)); - if (!m) { - if (QFile::exists(abs_name)) - return QPixmap(abs_name); - if (!abs_name.isEmpty()) - qWarning("QPixmap::fromMimeSource: Cannot find pixmap \"%s\" in the mime source factory", - TQT_TQSTRING(abs_name).latin1()); - return QPixmap(); - } - QPixmap pix; - TQImageDrag::decode(m, pix); - return pix; -} - -QImage qImageFromMimeSource(const QString &abs_name) -{ - const TQMimeSource *m = TQT_TQMIMESOURCE_CONST(TQMimeSourceFactory::defaultFactory()->data(abs_name)); - if (!m) { - qWarning("QImage::fromMimeSource: Cannot find image \"%s\" in the mime source factory", TQT_TQSTRING(abs_name).latin1()); - return QImage(); - } - QImage img; - TQImageDrag::decode(m, img); - return img; -} - -QT_END_NAMESPACE - -#else // USE_QT4 - -/*! - \fn const char * TQMimeSource::format(int i) const - - Returns the \a{i}-th supported MIME format, or 0. -*/ - - - -class TQMimeSourceFactoryData { -public: - TQMimeSourceFactoryData() : - last(0) - { - } - - ~TQMimeSourceFactoryData() - { - TQMap<TQString, TQMimeSource*>::Iterator it = stored.begin(); - while ( it != stored.end() ) { - delete *it; - ++it; - } - delete last; - } - - TQMap<TQString, TQMimeSource*> stored; - TQMap<TQString, TQString> extensions; - TQStringList path; - TQMimeSource* last; - TQPtrList<TQMimeSourceFactory> factories; -}; - -/*! - \class TQMimeSourceFactory tqmime.h - \brief The TQMimeSourceFactory class is an extensible provider of mime-typed data. - - \ingroup io - \ingroup environment - - A TQMimeSourceFactory provides an abstract interface to a - collection of information. Each piece of information is - represented by a TQMimeSource object which can be examined and - converted to concrete data types by functions such as - TQImageDrag::canDecode() and TQImageDrag::decode(). - - The base TQMimeSourceFactory can be used in two ways: as an - abstraction of a collection of files or as specifically stored - data. For it to access files, call setFilePath() before accessing - data. For stored data, call setData() for each item (there are - also convenience functions, e.g. setText(), setImage() and - setPixmap(), that simply call setData() with appropriate - parameters). - - The rich text widgets, TQTextEdit and TQTextBrowser, use - TQMimeSourceFactory to resolve references such as images or links - within rich text documents. They either access the default factory - (see \l{defaultFactory()}) or their own (see - \l{TQTextEdit::setMimeSourceFactory()}). Other classes that are - capable of displaying rich text (such as TQLabel, TQWhatsThis or - TQMessageBox) always use the default factory. - - A factory can also be used as a container to store data associated - with a name. This technique is useful whenever rich text contains - images that are stored in the program itself, not loaded from the - hard disk. Your program may, for example, define some image data - as: - \code - static const char* myimage_data[]={ - "...", - ... - "..."}; - \endcode - - To be able to use this image within some rich text, for example - inside a TQLabel, you must create a TQImage from the raw data and - insert it into the factory with a unique name: - \code - TQMimeSourceFactory::defaultFactory()->setImage( "myimage", TQImage(myimage_data) ); - \endcode - - Now you can create a rich text TQLabel with - - \code - TQLabel* label = new TQLabel( - "Rich text with embedded image:<img source=\"myimage\">" - "Isn't that <em>cute</em>?" ); - \endcode - - When no longer needed, you can clear the data from the factory: - - \code - delete label; - TQMimeSourceFactory::defaultFactory()->setData( "myimage", 0 ); - \endcode -*/ - - -/*! - Constructs a TQMimeSourceFactory that has no file path and no - stored content. -*/ -TQMimeSourceFactory::TQMimeSourceFactory() : - d(new TQMimeSourceFactoryData) -{ - // add some reasonable defaults - setExtensionType("htm", "text/html;charset=iso8859-1"); - setExtensionType("html", "text/html;charset=iso8859-1"); - setExtensionType("txt", "text/plain"); - setExtensionType("xml", "text/xml;charset=UTF-8"); - setExtensionType("jpg", "image/jpeg"); // support misspelled jpeg files -} - -/*! - Destroys the TQMimeSourceFactory, deleting all stored content. -*/ -TQMimeSourceFactory::~TQMimeSourceFactory() -{ - if ( defaultFactory() == this ) - defaultfactory = 0; - delete d; -} - -TQMimeSource* TQMimeSourceFactory::dataInternal(const TQString& abs_name, const TQMap<TQString, TQString> &extensions ) const -{ - TQMimeSource* r = 0; - TQFileInfo fi(abs_name); - if ( fi.isReadable() ) { - - // get the right mimetype - TQString e = fi.extension(FALSE); - TQCString mimetype = "application/octet-stream"; - const char* imgfmt; - if ( extensions.contains(e) ) - mimetype = extensions[e].latin1(); - else if ( ( imgfmt = TQImage::imageFormat( abs_name ) ) ) - mimetype = TQCString("image/")+TQCString(imgfmt).lower(); - - TQFile f(abs_name); - if ( f.open(IO_ReadOnly) && f.size() ) { - TQByteArray ba(f.size()); - f.readBlock(ba.data(), ba.size()); - TQStoredDrag* sr = new TQStoredDrag( mimetype ); - sr->setEncodedData( ba ); - delete d->last; - d->last = r = sr; - } - } - - // we didn't find the mime-source, so ask the default factory for - // the mime-source (this one will iterate over all installed ones) - // - // this looks dangerous, as this dataInternal() function will be - // called again when the default factory loops over all installed - // factories (including this), but the static bool looping in - // data() avoids endless recursions - if ( !r && this != defaultFactory() ) - r = (TQMimeSource*)defaultFactory()->data( abs_name ); - - return r; -} - - -/*! - Returns a reference to the data associated with \a abs_name. The - return value remains valid only until the next data() or setData() - call, so you should immediately decode the result. - - If there is no data associated with \a abs_name in the factory's - store, the factory tries to access the local filesystem. If \a - abs_name isn't an absolute file name, the factory will search for - it in all defined paths (see \l{setFilePath()}). - - The factory understands all the image formats supported by - TQImageIO. Any other mime types are determined by the file name - extension. The default settings are - \code - setExtensionType("html", "text/html;charset=iso8859-1"); - setExtensionType("htm", "text/html;charset=iso8859-1"); - setExtensionType("txt", "text/plain"); - setExtensionType("xml", "text/xml;charset=UTF-8"); - \endcode - The effect of these is that file names ending in "txt" will be - treated as text encoded in the local encoding; those ending in - "xml" will be treated as text encoded in Unicode UTF-8 encoding. - The text/html type is treated specially, since the encoding can be - specified in the html file itself. "html" or "htm" will be treated - as text encoded in the encoding specified by the html meta tag, if - none could be found, the charset of the mime type will be used. - The text subtype ("html", "plain", or "xml") does not affect the - factory, but users of the factory may behave differently. We - recommend creating "xml" files where practical. These files can be - viewed regardless of the runtime encoding and can encode any - Unicode characters without resorting to encoding definitions - inside the file. - - Any file data that is not recognized will be retrieved as a - TQMimeSource providing the "application/octet-stream" mime type, - meaning uninterpreted binary data. - - You can add further extensions or change existing ones with - subsequent calls to setExtensionType(). If the extension mechanism - is not sufficient for your problem domain, you can inherit - TQMimeSourceFactory and reimplement this function to perform some - more specialized mime-type detection. The same applies if you want - to use the mime source factory to access URL referenced data over - a network. -*/ -const TQMimeSource* TQMimeSourceFactory::data(const TQString& abs_name) const -{ - if ( d->stored.contains(abs_name) ) - return d->stored[abs_name]; - - TQMimeSource* r = 0; - TQStringList::Iterator it; - if ( abs_name[0] == '/' -#ifdef TQ_WS_WIN - || ( abs_name[0] && abs_name[1] == ':' ) || abs_name.startsWith("\\\\") -#endif - ) - { - // handle absolute file names directly - r = dataInternal( abs_name, d->extensions); - } - else { // check list of paths - for ( it = d->path.begin(); !r && it != d->path.end(); ++it ) { - TQString filename = *it; - if ( filename[(int)filename.length()-1] != '/' ) - filename += '/'; - filename += abs_name; - r = dataInternal( filename, d->extensions ); - } - } - - static bool looping = FALSE; - if ( !r && this == defaultFactory() ) { - // we found no mime-source and we are the default factory, so - // we know all the other installed mime-source factories, so - // ask them - if ( !looping ) { - // to avoid endless recursions, don't enter the loop below - // if data() got called from within the loop below - looping = TRUE; - TQPtrListIterator<TQMimeSourceFactory> it( d->factories ); - TQMimeSourceFactory *f; - while ( ( f = it.current() ) ) { - ++it; - if ( f == this ) - continue; - r = (TQMimeSource*)f->data( abs_name ); - if ( r ) { - looping = FALSE; - return r; - } - } - looping = FALSE; - } - } else if ( !r ) { - // we are not the default mime-source factory, so ask the - // default one for the mime-source, as this one will loop over - // all installed mime-source factories and ask these - r = (TQMimeSource*)defaultFactory()->data( abs_name ); - } - - return r; -} - -/*! - Sets the list of directories that will be searched when named data - is requested to the those given in the string list \a path. - - \sa filePath() -*/ -void TQMimeSourceFactory::setFilePath( const TQStringList& path ) -{ - d->path = path; -} - -/*! - Returns the currently set search paths. -*/ -TQStringList TQMimeSourceFactory::filePath() const -{ - return d->path; -} - -/*! - Adds another search path, \a p to the existing search paths. - - \sa setFilePath() -*/ -void TQMimeSourceFactory::addFilePath( const TQString& p ) -{ - d->path += p; -} - -/*! - Sets the mime-type to be associated with the file name extension, - \a ext to \a mimetype. This determines the mime-type for files - found via the paths set by setFilePath(). -*/ -void TQMimeSourceFactory::setExtensionType( const TQString& ext, const char* mimetype ) -{ - d->extensions.replace(ext, mimetype); -} - -/*! - Converts the absolute or relative data item name \a - abs_or_rel_name to an absolute name, interpreted within the - context (path) of the data item named \a context (this must be an - absolute name). -*/ -TQString TQMimeSourceFactory::makeAbsolute(const TQString& abs_or_rel_name, const TQString& context) const -{ - if ( context.isNull() || - !(context[0] == '/' -#ifdef TQ_WS_WIN - || ( context[0] && context[1] == ':') -#endif - )) - return abs_or_rel_name; - if ( abs_or_rel_name.isEmpty() ) - return context; - TQFileInfo c( context ); - if (!c.isDir()) { - TQFileInfo r( c.dir(TRUE), abs_or_rel_name ); - return r.absFilePath(); - } else { - TQDir d(context); - TQFileInfo r(d, abs_or_rel_name); - return r.absFilePath(); - } -} - -/*! - \overload - A convenience function. See data(const TQString& abs_name). The - file name is given in \a abs_or_rel_name and the path is in \a - context. -*/ -const TQMimeSource* TQMimeSourceFactory::data(const TQString& abs_or_rel_name, const TQString& context) const -{ - const TQMimeSource* r = data(makeAbsolute(abs_or_rel_name,context)); - if ( !r && !d->path.isEmpty() ) - r = data(abs_or_rel_name); - return r; -} - - -/*! - Sets \a text to be the data item associated with the absolute name - \a abs_name. - - Equivalent to setData(abs_name, new TQTextDrag(text)). -*/ -void TQMimeSourceFactory::setText( const TQString& abs_name, const TQString& text ) -{ - setData(abs_name, new TQTextDrag(text)); -} - -/*! - Sets \a image to be the data item associated with the absolute - name \a abs_name. - - Equivalent to setData(abs_name, new TQImageDrag(image)). -*/ -void TQMimeSourceFactory::setImage( const TQString& abs_name, const TQImage& image ) -{ - setData(abs_name, new TQImageDrag(image)); -} - -/*! - Sets \a pixmap to be the data item associated with the absolute - name \a abs_name. -*/ -void TQMimeSourceFactory::setPixmap( const TQString& abs_name, const TQPixmap& pixmap ) -{ - setData(abs_name, new TQImageDrag(pixmap.convertToImage())); -} - -/*! - Sets \a data to be the data item associated with - the absolute name \a abs_name. Note that the ownership of \a data is - transferred to the factory: do not delete or access the pointer after - passing it to this function. - - Passing 0 for data removes previously stored data. -*/ -void TQMimeSourceFactory::setData( const TQString& abs_name, TQMimeSource* data ) -{ - if ( d->stored.contains(abs_name) ) - delete d->stored[abs_name]; - d->stored.replace(abs_name,data); -} - - -/*! - Returns the application-wide default mime source factory. This - factory is used by rich text rendering classes such as - TQSimpleRichText, TQWhatsThis and TQMessageBox to resolve named - references within rich text documents. It serves also as the - initial factory for the more complex render widgets, TQTextEdit and - TQTextBrowser. - - \sa setDefaultFactory() -*/ -TQMimeSourceFactory* TQMimeSourceFactory::defaultFactory() -{ - if (!defaultfactory) - { - defaultfactory = new TQMimeSourceFactory(); - qmime_cleanup_factory.set( &defaultfactory ); - } - return defaultfactory; -} - -/*! - Sets the default \a factory, destroying any previously set mime - source provider. The ownership of the factory is transferred to - TQt. - - \sa defaultFactory() -*/ -void TQMimeSourceFactory::setDefaultFactory( TQMimeSourceFactory* factory) -{ - if ( !defaultfactory ) - qmime_cleanup_factory.set( &defaultfactory ); - else if ( defaultfactory != factory ) - delete defaultfactory; - defaultfactory = factory; -} - -/*! - Sets the defaultFactory() to 0 and returns the previous one. -*/ - -TQMimeSourceFactory* TQMimeSourceFactory::takeDefaultFactory() -{ - TQMimeSourceFactory *f = defaultfactory; - defaultfactory = 0; - return f; -} - -/*! - Adds the TQMimeSourceFactory \a f to the list of available - mimesource factories. If the defaultFactory() can't resolve a - data() it iterates over the list of installed mimesource factories - until the data can be resolved. - - \sa removeFactory(); -*/ - -void TQMimeSourceFactory::addFactory( TQMimeSourceFactory *f ) -{ - TQMimeSourceFactory::defaultFactory()->d->factories.append( f ); -} - -/*! - Removes the mimesource factory \a f from the list of available - mimesource factories. - - \sa addFactory(); -*/ - -void TQMimeSourceFactory::removeFactory( TQMimeSourceFactory *f ) -{ - TQMimeSourceFactory::defaultFactory()->d->factories.removeRef( f ); -} - -#endif // USE_QT4 - -#endif // TQT_NO_MIME |