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Diffstat (limited to 'tqtinterface/qt4/src/kernel/tqdragobject.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/kernel/tqdragobject.cpp | 3388 |
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diff --git a/tqtinterface/qt4/src/kernel/tqdragobject.cpp b/tqtinterface/qt4/src/kernel/tqdragobject.cpp deleted file mode 100644 index c062bfd..0000000 --- a/tqtinterface/qt4/src/kernel/tqdragobject.cpp +++ /dev/null @@ -1,3388 +0,0 @@ -#include "tqtglobaldefines.h" - -// #ifdef USE_QT4 -#if 0 - -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the Qt3Support module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial Usage -** Licensees holding valid Qt Commercial licenses may use this file in -** accordance with the Qt Commercial License Agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Nokia. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qplatformdefs.h" - -#ifndef QT_NO_MIME - -#include "tqdragobject.h" -#include "qpixmap.h" -#include "qevent.h" -#include "qfile.h" -#include "qtextcodec.h" -#include "qapplication.h" -#include "qpoint.h" -#include "qwidget.h" -#include "qbuffer.h" -#include "qimagereader.h" -#include "qimagewriter.h" -#include "qimage.h" -#include "qregexp.h" -#include "qdir.h" -#include "qdrag.h" -#include "tqstrlist.h" -#include "tqcstring.h" - -// #include <private/qobject_p.h> - -#include <ctype.h> -#if defined(Q_OS_WINCE) -#include <winsock.h> -#include "qfunctions_wince.h" -#endif - -QT_BEGIN_NAMESPACE - -static QWidget *last_target = 0; - -class QDragMime; - -class TQDragObjectPrivate : public TQObjectPrivate -{ - Q_DECLARE_PUBLIC(TQDragObject) -public: - TQDragObjectPrivate(): hot(0,0),pm_cursor(0) {} - QPixmap pixmap; - QPoint hot; - // store default cursors - QPixmap *pm_cursor; -}; - -class TQTextDragPrivate : public TQDragObjectPrivate -{ - Q_DECLARE_PUBLIC(TQTextDrag) -public: - TQTextDragPrivate() { setSubType(QLatin1String("plain")); } - void setSubType(const QString & st) { - subtype = st; - fmt = "text/" + subtype.toLatin1(); - } - - QString txt; - QString subtype; - QByteArray fmt; -}; - -class TQStoredDragPrivate : public TQDragObjectPrivate -{ - Q_DECLARE_PUBLIC(TQStoredDrag) -public: - TQStoredDragPrivate() {} - const char* fmt; - QByteArray enc; -}; - -class TQImageDragPrivate : public TQDragObjectPrivate -{ - Q_DECLARE_PUBLIC(TQImageDrag) -public: - TQImage img; - QList<QByteArray> ofmts; -}; - -class QDragMime : public QMimeData -{ -public: - QDragMime(TQDragObject *parent) : QMimeData(), dragObject(parent) { } - ~QDragMime(); - - QByteArray data(const QString &mimetype) const; - bool hasFormat(const QString &mimetype) const; - QStringList formats() const; - - QPointer<TQDragObject> dragObject; -}; - -QDragMime::~QDragMime() -{ - delete dragObject; -} -QByteArray QDragMime::data(const QString &mimetype) const -{ - return dragObject->encodedData(mimetype.latin1()); -} - -bool QDragMime::hasFormat(const QString &mimetype) const -{ - return dragObject->provides(mimetype.latin1()); -} - -QStringList QDragMime::formats() const -{ - int i = 0; - const char *format; - QStringList f; - while ((format = dragObject->format(i))) { - f.append(QLatin1String(format)); - ++i; - } - return f; -} - -/*! - Constructs a drag object called \a name with a parent \a - dragSource. - - Note that the drag object will be deleted when the \a dragSource is - deleted. -*/ - -TQDragObject::TQDragObject(QWidget * dragSource, const char * name) - :TQObject(*(new TQDragObjectPrivate), dragSource) -{ - setObjectName(QLatin1String(name)); -} - -/*! \internal */ -TQDragObject::TQDragObject(TQDragObjectPrivate &dd, QWidget *dragSource) - :TQObject(dd, dragSource) -{ -} - -/*! - Destroys the drag object, canceling any drag and drop operation in - which it is involved. -*/ - -TQDragObject::~TQDragObject() -{ -} - -#ifndef QT_NO_DRAGANDDROP -/*! - Set the pixmap, \a pm, to display while dragging the object. The - platform-specific implementation will use this where it can - so - provide a small masked pixmap, and do not assume that the user - will actually see it. - - The \a hotspot is the point on (or off) the pixmap that should be - under the cursor as it is dragged. It is relative to the top-left - pixel of the pixmap. - - \warning We have seen problems with drag cursors on different - graphics hardware and driver software on Windows. Setting the - graphics acceleration in the display settings down one tick solved - the problems in all cases. -*/ -void TQDragObject::setPixmap(QPixmap pm, const QPoint& hotspot) -{ - Q_D(TQDragObject); - d->pixmap = pm; - d->hot = hotspot; -} - -/*! - \overload - - Uses a hotspot that positions the pixmap below and to the right of - the mouse pointer. This allows the user to clearly see the point - on the window where they are dragging the data. -*/ -void TQDragObject::setPixmap(QPixmap pm) -{ - setPixmap(pm,QPoint(-10, -10)); -} - -/*! - Returns the currently set pixmap, or a null pixmap if none is set. - - \sa QPixmap::isNull() -*/ -QPixmap TQDragObject::pixmap() const -{ - return d_func()->pixmap; -} - -/*! - Returns the currently set pixmap hotspot. - - \sa setPixmap() -*/ -QPoint TQDragObject::pixmapHotSpot() const -{ - return d_func()->hot; -} - -/*! - Starts a drag operation using the contents of this object, using - DragDefault mode. - - The function returns true if the caller should delete the original - copy of the dragged data (but see target()); otherwise returns - false. - - If the drag contains \e references to information (e.g. file names - in a TQUriDrag are references) then the return value should always - be ignored, as the target is expected to directly manipulate the - content referred to by the drag object. On X11 the return value should - always be correct anyway, but on Windows this is not necessarily - the case; e.g. the file manager starts a background process to - move files, so the source \e{must not} delete the files! - - Note that on Windows the drag operation will start a blocking modal - event loop that will not dispatch any QTimers. -*/ -bool TQDragObject::drag() -{ - return drag(DragDefault); -} - -/*! - After the drag completes, this function will return the QWidget - which received the drop, or 0 if the data was dropped on another - application. - - This can be useful for detecting the case where drag and drop is - to and from the same widget. -*/ -QWidget *TQDragObject::target() -{ - return last_target; -} - -/*! - Starts a drag operation using the contents of this object, using - \c DragMove mode. Be sure to read the constraints described in - drag(). - - Returns true if the data was dragged as a \e move, indicating that - the caller should remove the original source of the data (the drag - object must continue to have a copy); otherwise returns false. - - \sa drag() dragCopy() dragLink() -*/ -bool TQDragObject::dragMove() -{ - return drag(DragMove); -} - - -/*! - Starts a drag operation using the contents of this object, using - \c DragCopy mode. Be sure to read the constraints described in - drag(). - - \sa drag() dragMove() dragLink() -*/ -void TQDragObject::dragCopy() -{ - (void)drag(DragCopy); -} - -/*! - Starts a drag operation using the contents of this object, using - \c DragLink mode. Be sure to read the constraints described in - drag(). - - \sa drag() dragCopy() dragMove() -*/ -void TQDragObject::dragLink() -{ - (void)drag(DragLink); -} - - -/*! - \enum TQDragObject::DragMode - - This enum describes the possible drag modes. - - \value DragDefault The mode is determined heuristically. - \value DragCopy The data is copied. - \value DragMove The data is moved. - \value DragLink The data is linked. - \value DragCopyOrMove The user chooses the mode by using the - \key{Shift} key to switch from the default - copy mode to move mode. -*/ - - -/*! - \overload - Starts a drag operation using the contents of this object. - - At this point, the object becomes owned by Qt, not the - application. You should not delete the drag object or anything it - references. The actual transfer of data to the target application - will be done during future event processing - after that time the - drag object will be deleted. - - Returns true if the dragged data was dragged as a \e move, - indicating that the caller should remove the original source of - the data (the drag object must continue to have a copy); otherwise - returns false. - - The \a mode specifies the drag mode (see - \l{TQDragObject::DragMode}.) Normally one of the simpler drag(), - dragMove(), or dragCopy() functions would be used instead. -*/ -bool TQDragObject::drag(DragMode mode) -{ - Q_D(TQDragObject); - QDragMime *data = new QDragMime(this); - int i = 0; - const char *fmt; - while ((fmt = format(i))) { - data->setData(QLatin1String(fmt), encodedData(fmt)); - ++i; - } - - QDrag *drag = new QDrag(qobject_cast<QWidget *>(parent())); - drag->setMimeData(data); - drag->setPixmap(d->pixmap); - drag->setHotSpot(d->hot); - - Qt::DropActions allowedOps; - Qt::DropAction defaultOp = Qt::IgnoreAction; - switch(mode) { - default: - case DragDefault: - case DragCopyOrMove: - allowedOps = Qt::CopyAction|Qt::MoveAction; - defaultOp = Qt::IgnoreAction; - break; - case DragCopy: - allowedOps = Qt::CopyAction; - defaultOp = Qt::CopyAction; - break; - case DragMove: - allowedOps = Qt::MoveAction; - defaultOp = Qt::MoveAction; - break; - case DragLink: - allowedOps = Qt::LinkAction; - defaultOp = Qt::LinkAction; - break; - } - bool retval = (drag->exec(allowedOps, defaultOp) == Qt::MoveAction); - last_target = drag->target(); - - return retval; -} - -#endif - - -/*! - Returns a pointer to the widget where this object originated (the drag - source). -*/ - -QWidget * TQDragObject::source() -{ - if (parent() && parent()->isWidgetType()) - return (QWidget *)parent(); - else - return 0; -} - - -/*! - \class TQDragObject - - \brief The TQDragObject class encapsulates MIME-based data - transfer. - - \compat - - TQDragObject is the base class for all data that needs to be - transferred between and within applications, both for drag and - drop and for the clipboard. - - See the \link dnd.html Drag and drop documentation\endlink for an - overview of how to provide drag and drop in your application. - - See the QClipboard documentation for an overview of how to provide - cut and paste in your application. - - The drag() function is used to start a drag operation. You can - specify the \l DragMode in the call or use one of the convenience - functions dragCopy(), dragMove(), or dragLink(). The drag source - where the data originated is retrieved with source(). If the data - was dropped on a widget within the application, target() will - return a pointer to that widget. Specify the pixmap to display - during the drag with setPixmap(). -*/ - -static -void stripws(QByteArray& s) -{ - int f; - while ((f = s.indexOf(' ')) >= 0) - s.remove(f,1); -} - -/*! - \class TQTextDrag - - \brief The TQTextDrag class is a drag and drop object for - transferring plain and Unicode text. - - \compat - - Plain text is passed in a QString which may contain multiple lines - (i.e. may contain newline characters). The drag target will receive - the newlines according to the runtime environment, e.g. LF on Unix, - and CRLF on Windows. - - Qt provides no built-in mechanism for delivering only a single-line. - - For more information about drag and drop, see the TQDragObject class - and the \link dnd.html drag and drop documentation\endlink. -*/ - - -/*! - Constructs a text drag object with the given \a name, and sets its data - to \a text. The \a dragSource is the widget that the drag operation started - from. -*/ - -TQTextDrag::TQTextDrag(const QString &text, QWidget * dragSource, const char * name) - : TQDragObject(*new TQTextDragPrivate, dragSource) -{ - setObjectName(QLatin1String(name)); - setText(text); -} - - -/*! - Constructs a default text drag object with the given \a name. - The \a dragSource is the widget that the drag operation started from. -*/ - -TQTextDrag::TQTextDrag(QWidget * dragSource, const char * name) - : TQDragObject(*(new TQTextDragPrivate), dragSource) -{ - setObjectName(QLatin1String(name)); -} - -/*! \internal */ -TQTextDrag::TQTextDrag(TQTextDragPrivate &dd, QWidget *dragSource) - : TQDragObject(dd, dragSource) -{ - -} - -/*! - Destroys the text drag object. -*/ -TQTextDrag::~TQTextDrag() -{ - -} - -/*! - \fn void TQTextDrag::setSubtype(const QString &subtype) - - Sets the MIME \a subtype of the text being dragged. The default subtype - is "plain", so the default MIME type of the text is "text/plain". - You might use this to declare that the text is "text/html" by calling - setSubtype("html"). -*/ -void TQTextDrag::setSubtype(const QString & st) -{ - d_func()->setSubType(st); -} - -/*! - Sets the \a text to be dragged. You will need to call this if you did - not pass the text during construction. -*/ -void TQTextDrag::setText(const QString &text) -{ - d_func()->txt = text; -} - - -/*! - \reimp -*/ -const char * TQTextDrag::format(int i) const -{ - if (i > 0) - return 0; - return d_func()->fmt.constData(); -} - -QTextCodec* qt_findcharset(const QByteArray& mimetype) -{ - int i=mimetype.indexOf("charset="); - if (i >= 0) { - QByteArray cs = mimetype.mid(i+8); - stripws(cs); - i = cs.indexOf(';'); - if (i >= 0) - cs = cs.left(i); - // May return 0 if unknown charset - return QTextCodec::codecForName(cs); - } - // no charset=, use locale - return QTextCodec::codecForName("utf-8"); -} - -static QTextCodec *codecForHTML(const QByteArray &ba) -{ - // determine charset - int mib = 0; - int pos; - QTextCodec *c = 0; - - if (ba.size() > 1 && (((uchar)ba[0] == 0xfe && (uchar)ba[1] == 0xff) - || ((uchar)ba[0] == 0xff && (uchar)ba[1] == 0xfe))) { - mib = 1015; // utf16 - } else if (ba.size() > 2 - && (uchar)ba[0] == 0xef - && (uchar)ba[1] == 0xbb - && (uchar)ba[2] == 0xbf) { - mib = 106; // utf-8 - } else { - pos = 0; - while ((pos = ba.indexOf('<', pos)) != -1) { - int end = ba.indexOf('>', pos+1); - if (end == -1) - break; - const QString str(QString::fromLatin1(ba.mid(pos, end-pos))); - if (str.contains(QLatin1String("meta http-equiv="), Qt::CaseInsensitive)) { - pos = str.indexOf(QLatin1String("charset="), 0, Qt::CaseInsensitive) + int(strlen("charset=")); - if (pos != -1) { - int pos2 = ba.indexOf('\"', pos+1); - QByteArray cs = ba.mid(pos, pos2-pos); - c = QTextCodec::codecForName(cs); - if (c) - return c; - } - } - pos = end; - } - } - if (mib) - c = QTextCodec::codecForMib(mib); - - return c; -} - -static -QTextCodec* findcodec(const QMimeSource* e) -{ - QTextCodec* r = 0; - const char* f; - int i; - for (i=0; (f=e->format(i)); i++) { - bool html = !qstrnicmp(f, "text/html", 9); - if (html) - r = codecForHTML(e->encodedData(f)); - if (!r) - r = qt_findcharset(QByteArray(f).toLower()); - if (r) - return r; - } - return 0; -} - - - -/*! - \reimp -*/ -QByteArray TQTextDrag::encodedData(const char* mime) const -{ - Q_D(const TQTextDrag); - if (mime != d->fmt) - return QByteArray(); - return d->txt.toUtf8(); -} - -/*! - \fn bool TQTextDrag::canDecode(const QMimeSource *source) - - Returns true if the information in the MIME \a source can be decoded - into a QString; otherwise returns false. - - \sa decode() -*/ -bool TQTextDrag::canDecode(const QMimeSource* e) -{ - const char* f; - for (int i=0; (f=e->format(i)); i++) { - if (0==qstrnicmp(f,"text/",5)) { - return findcodec(e) != 0; - } - } - return false; -} - -/*! - \fn bool TQTextDrag::decode(const QMimeSource *source, QString &string, QString &subtype) - - \overload - - Attempts to decode the dropped information in the MIME \a source into - the \a string given. - Returns true if successful; otherwise returns false. If \a subtype - is null, any text subtype is accepted; otherwise only the - specified \a subtype is accepted. - - \sa canDecode() -*/ -bool TQTextDrag::decode(const QMimeSource* e, QString& str, QString& subtype) -{ - if(!e) - return false; - - const char* mime; - for (int i=0; (mime = e->format(i)); i++) { - if (0==qstrnicmp(mime,"text/",5)) { - QByteArray m(mime); - m = m.toLower(); - int semi = m.indexOf(';'); - if (semi < 0) - semi = m.length(); - QString foundst(QString::fromLatin1(m.mid(5,semi-5))); - if (subtype.isNull() || foundst == subtype) { - bool html = !qstrnicmp(mime, "text/html", 9); - QTextCodec* codec = 0; - if (html) - // search for the charset tag in the HTML - codec = codecForHTML(e->encodedData(mime)); - if (!codec) - codec = qt_findcharset(m); - if (codec) { - QByteArray payload; - - payload = e->encodedData(mime); - if (payload.size()) { - int l; - if (codec->mibEnum() != 1015) { - // length is at NUL or payload.size() - l = 0; - while (l < (int)payload.size() && payload[l]) - l++; - } else { - l = payload.size(); - } - - str = codec->toUnicode(payload,l); - - if (subtype.isNull()) - subtype = foundst; - - return true; - } - } - } - } - } - return false; -} - -/*! - \fn bool TQTextDrag::decode(const QMimeSource *source, QString &string) - - Attempts to decode the dropped information in the MIME \a source into - the \a string given. - Returns true if successful; otherwise returns false. - - \sa canDecode() -*/ -bool TQTextDrag::decode(const QMimeSource* e, QString& str) -{ - QString st; - return decode(e, str, st); -} - - -/* - TQImageDrag could use an internal MIME type for communicating QPixmaps - and TQImages rather than always converting to raw data. This is available - for that purpose and others. It is not currently used. -*/ - -/*! - \class TQImageDrag - - \brief The TQImageDrag class provides a drag and drop object for - transferring images. - - \compat - - Images are offered to the receiving application in multiple - formats, determined by Qt's output formats. -*/ - -/*! - Constructs an image drag object with the given \a name, and sets its - data to \a image. The \a dragSource is the widget that the drag operation - started from. -*/ - -TQImageDrag::TQImageDrag(TQImage image, - QWidget * dragSource, const char * name) - : TQDragObject(*(new TQImageDragPrivate), dragSource) -{ - setObjectName(QLatin1String(name)); - setImage(image); -} - -/*! - Constructs a default image drag object with the given \a name. - The \a dragSource is the widget that the drag operation started from. -*/ - -TQImageDrag::TQImageDrag(QWidget * dragSource, const char * name) - : TQDragObject(*(new TQImageDragPrivate), dragSource) -{ - setObjectName(QLatin1String(name)); -} - -/*! \internal */ -TQImageDrag::TQImageDrag(TQImageDragPrivate &dd, QWidget *dragSource) - : TQDragObject(dd, dragSource) -{ -} - -/*! - Destroys the image drag object. -*/ - -TQImageDrag::~TQImageDrag() -{ - // nothing -} - - -/*! - Sets the \a image to be dragged. You will need to call this if you did - not pass the image during construction. -*/ -void TQImageDrag::setImage(TQImage image) -{ - Q_D(TQImageDrag); - d->img = image; - QList<QByteArray> formats = QImageWriter::supportedImageFormats(); - formats.removeAll("PBM"); // remove non-raw PPM - if (image.depth()!=32) { - // BMP better than PPM for paletted images - if (formats.removeAll("BMP")) // move to front - formats.insert(0,"BMP"); - } - // PNG is best of all - if (formats.removeAll("PNG")) // move to front - formats.insert(0,"PNG"); - - for(int i = 0; i < formats.count(); i++) { - QByteArray format("image/"); - format += formats.at(i); - format = format.toLower(); - if (format == "image/pbmraw") - format = "image/ppm"; - d->ofmts.append(format); - } - d->ofmts.append("application/x-qt-image"); -} - -/*! - \reimp -*/ -const char * TQImageDrag::format(int i) const -{ - Q_D(const TQImageDrag); - return i < d->ofmts.count() ? d->ofmts.at(i).data() : 0; -} - -/*! - \reimp -*/ -QByteArray TQImageDrag::encodedData(const char* fmt) const -{ - Q_D(const TQImageDrag); - QString imgFormat(fmt); - if (imgFormat == QLatin1String("application/x-qt-image")) - imgFormat = QLatin1String("image/PNG"); - - if (imgFormat.startsWith("image/")){ - QByteArray f(imgFormat.mid(6).toAscii()); - QByteArray dat; - QBuffer w(&dat); - w.open(QIODevice::WriteOnly); - QImageWriter writer(&w, f.toUpper()); - if (!writer.write(d->img)) - return QByteArray(); - w.close(); - return dat; - } else { - return QByteArray(); - } -} - -/*! - \fn bool TQImageDrag::canDecode(const QMimeSource *source) - - Returns true if the information in the MIME \a source can be decoded - into an image; otherwise returns false. - - \sa decode() -*/ -bool TQImageDrag::canDecode(const QMimeSource* e) -{ - return e->provides("application/x-qt-image"); -} - -/*! - \fn bool TQImageDrag::decode(const QMimeSource *source, QImage &image) - - Decode the dropped information in the MIME \a source into the \a image. - Returns true if successful; otherwise returns false. - - \sa canDecode() -*/ -bool TQImageDrag::decode(const QMimeSource* e, QImage& img) -{ - if (!e) - return false; - - QByteArray payload = e->encodedData("application/x-qt-image"); - if (payload.isEmpty()) - return false; - - img.loadFromData(payload); - if (img.isNull()) - return false; - - return true; -} - -/*! - \fn bool TQImageDrag::decode(const QMimeSource *source, QPixmap &pixmap) - - \overload - - Decodes the dropped information in the MIME \a source into the \a pixmap. - Returns true if successful; otherwise returns false. - - This is a convenience function that converts the information to a QPixmap - via a QImage. - - \sa canDecode() -*/ -bool TQImageDrag::decode(const QMimeSource* e, QPixmap& pm) -{ - if (!e) - return false; - - QImage img; - // We avoid dither, since the image probably came from this display - if (decode(e, img)) { - pm = QPixmap::fromImage(img, Qt::AvoidDither); - if (pm.isNull()) - return false; - - return true; - } - return false; -} - - - - -/*! - \class TQStoredDrag - \brief The TQStoredDrag class provides a simple stored-value drag object for arbitrary MIME data. - - \compat - - When a block of data has only one representation, you can use a - TQStoredDrag to hold it. - - For more information about drag and drop, see the TQDragObject - class and the \link dnd.html drag and drop documentation\endlink. -*/ - -/*! - Constructs a TQStoredDrag. The \a dragSource and \a name are passed - to the TQDragObject constructor, and the format is set to \a - mimeType. - - The data will be unset. Use setEncodedData() to set it. -*/ -TQStoredDrag::TQStoredDrag(const char* mimeType, QWidget * dragSource, const char * name) : - TQDragObject(*new TQStoredDragPrivate, dragSource) -{ - Q_D(TQStoredDrag); - setObjectName(QLatin1String(name)); - d->fmt = qstrdup(mimeType); -} - -/*! \internal */ -TQStoredDrag::TQStoredDrag(TQStoredDragPrivate &dd, const char* mimeType, QWidget * dragSource) - : TQDragObject(dd, dragSource) -{ - d_func()->fmt = qstrdup(mimeType); -} - -/*! - Destroys the drag object. -*/ -TQStoredDrag::~TQStoredDrag() -{ - delete [] (char*)d_func()->fmt; -} - -/*! - \reimp -*/ -const char * TQStoredDrag::format(int i) const -{ - if (i==0) - return d_func()->fmt; - else - return 0; -} - - -/*! - \fn void TQStoredDrag::setEncodedData(const QByteArray &data) - - Sets the encoded \a data of this drag object. The encoded data is - delivered to drop sites; it must be in a strictly defined and portable - format. - - The drag object can't be dropped (by the user) until this function - has been called. -*/ - -void TQStoredDrag::setEncodedData(const QByteArray & encodedData) -{ - d_func()->enc = encodedData; -} - -/*! - \fn QByteArray TQStoredDrag::encodedData(const char *format) const - - Returns the stored data in the \a format given. - - \sa setEncodedData() -*/ -QByteArray TQStoredDrag::encodedData(const char* m) const -{ - if (!qstricmp(m, d_func()->fmt)) - return d_func()->enc; - else - return QByteArray(); -} - - -/*! - \class TQUriDrag - \brief The TQUriDrag class provides a drag object for a list of URI references. - - \compat - - URIs are a useful way to refer to files that may be distributed - across multiple machines. A URI will often refer to a file on a - machine local to both the drag source and the drop target, so the - URI can be equivalent to passing a file name but is more - extensible. - - Use URIs in Unicode form so that the user can comfortably edit and - view them. For use in HTTP or other protocols, use the correctly - escaped ASCII form. - - You can convert a list of file names to file URIs using - setFileNames(), or into human-readable form with setUnicodeUris(). - - Static functions are provided to convert between filenames and - URIs; e.g. uriToLocalFile() and localFileToUri(). Static functions - are also provided to convert URIs to and from human-readable form; - e.g. uriToUnicodeUri() and unicodeUriToUri(). - You can also decode URIs from a MIME source into a list with - decodeLocalFiles() and decodeToUnicodeUris(). -*/ - -/*! - Constructs an object to drag the list of \a uris. - The \a dragSource and \a name are passed to the TQStoredDrag constructor. - - Note that URIs are always in escaped UTF8 encoding. -*/ -TQUriDrag::TQUriDrag(const TQStrList &uris, QWidget * dragSource, const char * name) : - TQStoredDrag("text/uri-list", dragSource) -{ - setObjectName(QLatin1String(name)); - setUris(uris); -} - -/*! - Constructs an object to drag with the given \a name. - You must call setUris() before you start the drag(). - Both the \a dragSource and the \a name are passed to the TQStoredDrag - constructor. -*/ -TQUriDrag::TQUriDrag(QWidget * dragSource, const char * name) : - TQStoredDrag("text/uri-list", dragSource) -{ - setObjectName(QLatin1String(name)); -} -#endif - -/*! - Destroys the URI drag object. -*/ -TQUriDrag::~TQUriDrag() -{ -} - -/*! - \fn void TQUriDrag::setUris(const QList<QByteArray> &list) - - Changes the \a list of URIs to be dragged. - - Note that URIs are always in escaped UTF8 encoding. -*/ -void TQUriDrag::setUris(const QList<QByteArray> &uris) -{ - QByteArray a; - int c = 0; - int i; - int count = uris.count(); - for (i = 0; i < count; ++i) - c += uris.at(i).size() + 2; //length + \r\n - a.reserve(c+1); - for (i = 0; i < count; ++i) { - a.append(uris.at(i)); - a.append("\r\n"); - } - a[c] = 0; - setEncodedData(a); -} - - -/*! - \fn bool TQUriDrag::canDecode(const QMimeSource *source) - - Returns true if decode() can decode the MIME \a source; otherwise - returns false. -*/ -bool TQUriDrag::canDecode(const QMimeSource* e) -{ - return e->provides("text/uri-list"); -} - -/*! - \fn bool TQUriDrag::decode(const QMimeSource* source, TQStrList& list) - - Decodes URIs from the MIME \a source, placing the result in the \a list. - The list is cleared before any items are inserted. - - Returns true if the MIME \a source contained a valid list of URIs; - otherwise returns false. -*/ -bool TQUriDrag::decode(const QMimeSource* e, TQStrList& l) -{ - QByteArray payload = e->encodedData("text/uri-list"); - if (payload.size()) { - l.clear(); - l.setAutoDelete(true); - uint c=0; - const char* data = payload.data(); - while ((int)c < payload.size() && data[c]) { - uint f = c; - // Find line end - while ((int)c < payload.size() && data[c] && data[c]!='\r' - && data[c] != '\n') - c++; - TQCString s(data+f,c-f+1); - if (s[0] != '#') // non-comment? - l.append(s); - // Skip junk - while ((int)c < payload.size() && data[c] && - (data[c]=='\n' || data[c]=='\r')) - c++; - } - return true; - } - return false; -} - -static uint htod(int h) -{ - if (isdigit(h)) - return h - '0'; - return tolower(h) - 'a' + 10; -} - -/*! - \fn TQUriDrag::setFilenames(const QStringList &list) - - \obsolete - - Sets the filename's in the drag object to those in the given \a - list. - - Use setFileNames() instead. -*/ - -/*! - \fn void TQUriDrag::setFileNames(const QStringList &filenames) - - Sets the URIs to be local file URIs equivalent to the \a filenames. - - \sa localFileToUri(), setUris() -*/ -void TQUriDrag::setFileNames(const QStringList & fnames) -{ - QList<QByteArray> uris; - for (QStringList::ConstIterator i = fnames.begin(); - i != fnames.end(); ++i) { - QByteArray fileUri = localFileToUri(*i); - if (!fileUri.isEmpty()) - uris.append(fileUri); - } - - setUris(uris); -} - -/*! - \fn void TQUriDrag::setFileNames(const QString &name) - \fn void TQUriDrag::setFilenames(const QString &name) - - Same as setFileNames(QStringList(\a name)). -*/ - -/*! - \fn void TQUriDrag::setUnicodeUris(const QStringList &list) - - Sets the URIs in the \a list to be Unicode URIs (only useful for - displaying to humans). - - \sa localFileToUri(), setUris() -*/ -void TQUriDrag::setUnicodeUris(const QStringList & uuris) -{ - QList<QByteArray> uris; - for (int i = 0; i < uuris.count(); ++i) - uris.append(unicodeUriToUri(uuris.at(i))); - setUris(uris); -} - -/*! - \fn QByteArray TQUriDrag::unicodeUriToUri(const QString &string) - - Returns the URI equivalent of the Unicode URI given in the \a string - (only useful for displaying to humans). - - \sa uriToLocalFile() -*/ -QByteArray TQUriDrag::unicodeUriToUri(const QString& uuri) -{ - QByteArray utf8 = uuri.toUtf8(); - QByteArray escutf8; - int n = utf8.length(); - bool isFile = uuri.startsWith(QLatin1String("file://")); - for (int i=0; i<n; i++) { - if ((utf8[i] >= 'a' && utf8[i] <= 'z') - || utf8[i] == '/' - || (utf8[i] >= '0' && utf8[i] <= '9') - || (utf8[i] >= 'A' && utf8[i] <= 'Z') - - || utf8[i] == '-' || utf8[i] == '_' - || utf8[i] == '.' || utf8[i] == '!' - || utf8[i] == '~' || utf8[i] == '*' - || utf8[i] == '(' || utf8[i] == ')' - || utf8[i] == '\'' - - // Allow this through, so that all URI-references work. - || (!isFile && utf8[i] == '#') - - || utf8[i] == ';' - || utf8[i] == '?' || utf8[i] == ':' - || utf8[i] == '@' || utf8[i] == '&' - || utf8[i] == '=' || utf8[i] == '+' - || utf8[i] == '$' || utf8[i] == ',') - { - escutf8 += utf8[i]; - } else { - // Everything else is escaped as %HH - QString s; - s.sprintf("%%%02x",(uchar)utf8[i]); - escutf8 += s.latin1(); - } - } - return escutf8; -} - -/*! - Returns the URI equivalent to the absolute local \a filename. - - \sa uriToLocalFile() -*/ -QByteArray TQUriDrag::localFileToUri(const QString& filename) -{ - QString r = filename; - - //check that it is an absolute file - if (QDir::isRelativePath(r)) - return QByteArray(); -#ifdef Q_WS_WIN - - - bool hasHost = false; - // convert form network path - if (r.left(2) == QLatin1String("\\\\") || r.left(2) == QLatin1String("//")) { - r.remove(0, 2); - hasHost = true; - } - - // Slosh -> Slash - int slosh; - while ((slosh=r.indexOf(QLatin1Char('\\'))) >= 0) { - r[slosh] = QLatin1Char('/'); - } - - // Drive - if (r[0] != QLatin1Char('/') && !hasHost) - r.insert(0,QLatin1Char('/')); - -#endif -#if defined (Q_WS_X11) && 0 - // URL without the hostname is considered to be errorneous by XDnD. - // See: http://www.newplanetsoftware.com/xdnd/dragging_files.html - // This feature is not active because this would break dnd between old and new qt apps. - char hostname[257]; - if (gethostname(hostname, 255) == 0) { - hostname[256] = '\0'; - r.prepend(QString::fromLatin1(hostname)); - } -#endif - return unicodeUriToUri(QLatin1String("file://") + r); -} - -/*! - \fn QString TQUriDrag::uriToUnicodeUri(const char *string) - - Returns the Unicode URI (only useful for displaying to humans) - equivalent of the URI given in the \a string. - - Note that URIs are always in escaped UTF8 encoding. - - \sa localFileToUri() -*/ -QString TQUriDrag::uriToUnicodeUri(const char* uri) -{ - QByteArray utf8; - - while (*uri) { - switch (*uri) { - case '%': { - uint ch = (uchar) uri[1]; - if (ch && uri[2]) { - ch = htod(ch) * 16 + htod((uchar) uri[2]); - utf8 += (char) ch; - uri += 2; - } - } - break; - default: - utf8 += *uri; - } - ++uri; - } - - return QString::fromUtf8(utf8); -} - -/*! - \fn QString TQUriDrag::uriToLocalFile(const char *string) - - Returns the name of a local file equivalent to the URI given in the - \a string, or an empty string if it does not refer to a local file. - - Note that URIs are always in escaped UTF8 encoding. - - \sa localFileToUri() -*/ -QString TQUriDrag::uriToLocalFile(const char* uri) -{ - QString file; - - if (!uri) - return file; - if (0==qstrnicmp(uri,"file:/",6)) // It is a local file uri - uri += 6; - else if (QString::fromLatin1(uri).indexOf(QLatin1String(":/")) != -1) // It is a different scheme uri - return file; - - bool local = uri[0] != '/' || (uri[0] != '\0' && uri[1] == '/'); -#ifdef Q_WS_X11 - // do we have a hostname? - if (!local && uri[0] == '/' && uri[2] != '/') { - // then move the pointer to after the 'hostname/' part of the uri - const char* hostname_end = strchr(uri+1, '/'); - if (hostname_end != NULL) { - char hostname[257]; - if (gethostname(hostname, 255) == 0) { - hostname[256] = '\0'; - if (qstrncmp(uri+1, hostname, hostname_end - (uri+1)) == 0) { - uri = hostname_end + 1; // point after the slash - local = true; - } - } - } - } -#endif - if (local) { - file = uriToUnicodeUri(uri); - if (uri[1] == '/') { - file.remove((uint)0,1); - } else { - file.insert(0, QLatin1Char('/')); - } -#ifdef Q_WS_WIN - if (file.length() > 2 && file[0] == QLatin1Char('/') && file[2] == QLatin1Char('|')) { - file[2] = QLatin1Char(':'); - file.remove(0,1); - } else if (file.length() > 2 && file[0] == QLatin1Char('/') && file[1].isLetter() && file[2] == QLatin1Char(':')) { - file.remove(0, 1); - } - // Leave slash as slashes. -#endif - } -#ifdef Q_WS_WIN - else { - file = uriToUnicodeUri(uri); - // convert to network path - file.insert(1, QLatin1Char('/')); // leave as forward slashes - } -#endif - - return file; -} - -/*! - \fn bool TQUriDrag::decodeLocalFiles(const QMimeSource *source, QStringList &list) - - Decodes URIs from the MIME \a source, converting them to local filenames - where possible, and places them in the \a list (which is first cleared). - - Returns true if the MIME \a source contained a valid list of URIs; - otherwise returns false. The list will be empty if no URIs referred to - local files. -*/ -bool TQUriDrag::decodeLocalFiles(const QMimeSource* e, QStringList& l) -{ - TQStrList u; - if (!decode(e, u)) - return false; - - l.clear(); - for (uint i = 0; i < u.count(); ++i) { - QString lf = uriToLocalFile(u.at(i)); - if (!lf.isEmpty()) - l.append(lf); - } - return true; -} - -/*! - \fn bool TQUriDrag::decodeToUnicodeUris(const QMimeSource *source, QStringList &list) - - Decodes URIs from the MIME \a source, converting them to Unicode URIs - (only useful for displaying to humans), and places them in the \a list - (which is first cleared). - - Returns true if the MIME \a source contained a valid list of URIs; - otherwise returns false. -*/ -bool TQUriDrag::decodeToUnicodeUris(const QMimeSource* e, QStringList& l) -{ - TQStrList u; - if (!decode(e, u)) - return false; - - l.clear(); - for (uint i = 0; i < u.count(); ++i) - l.append(uriToUnicodeUri(u.at(i))); - - return true; -} - -/*! - \class TQColorDrag - - \brief The TQColorDrag class provides a drag and drop object for - transferring colors between widgets. - - \compat - - This class provides a drag object which can be used to transfer data - about colors for drag and drop and in the clipboard. For example, it - is used in QColorDialog. - - The color is set in the constructor but can be changed with - setColor(). - - For more information about drag and drop, see the TQDragObject class - and the \link dnd.html drag and drop documentation\endlink. -*/ - -/*! - Constructs a color drag object with the given \a col. Passes \a - dragsource and \a name to the TQStoredDrag constructor. -*/ - -TQColorDrag::TQColorDrag(const QColor &col, QWidget *dragsource, const char *name) - : TQStoredDrag("application/x-color", dragsource) -{ - setObjectName(QLatin1String(name)); - setColor(col); -} - -/*! - Constructs a color drag object with a white color. Passes \a - dragsource and \a name to the TQStoredDrag constructor. -*/ - -TQColorDrag::TQColorDrag(QWidget *dragsource, const char *name) - : TQStoredDrag("application/x-color", dragsource) -{ - setObjectName(QLatin1String(name)); - setColor(Qt::white); -} - -/*! - \fn void TQColorDrag::setColor(const QColor &color) - - Sets the \a color of the color drag. -*/ - -void TQColorDrag::setColor(const QColor &col) -{ - short r = (col.red() << 8) | col.red(); - short g = (col.green() << 8) | col.green(); - short b = (col.blue() << 8) | col.blue(); - - // make sure we transmit data in network order - r = htons(r); - g = htons(g); - b = htons(b); - - ushort rgba[4] = { - r, g, b, - 0xffff // Alpha not supported yet. - }; - QByteArray data; - data.resize(sizeof(rgba)); - memcpy(data.data(), rgba, sizeof(rgba)); - setEncodedData(data); -} - -/*! - \fn bool TQColorDrag::canDecode(QMimeSource *source) - - Returns true if the color drag object can decode the MIME \a source; - otherwise returns false. -*/ - -bool TQColorDrag::canDecode(QMimeSource *e) -{ - return e->provides("application/x-color"); -} - -/*! - \fn bool TQColorDrag::decode(QMimeSource *source, QColor &color) - - Decodes the MIME \a source, and sets the decoded values to the - given \a color. Returns true if the decoding is successful. - Returns false if the size of the encoded data is not the - expected size. -*/ - -bool TQColorDrag::decode(QMimeSource *e, QColor &col) -{ - QByteArray data = e->encodedData("application/x-color"); - ushort rgba[4]; - if (data.size() != sizeof(rgba)) - return false; - - memcpy(rgba, data.constData(), sizeof(rgba)); - - short r = rgba[0]; - short g = rgba[1]; - short b = rgba[2]; - short a = rgba[3]; - - // data is in network order - r = ntohs(r); - g = ntohs(g); - b = ntohs(b); - a = ntohs(a); - - r = (r >> 8) & 0xff; - g = (g >> 8) & 0xff; - b = (b >> 8) & 0xff; - a = (a >> 8) & 0xff; - - col.setRgb(r, g, b, a); - return true; -} - -QT_END_NAMESPACE - -#else // USE_QT4 - -/**************************************************************************** -** -** Implementation of Drag and Drop 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 sales@trolltech.com. -** -** 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 "tqplatformdefs.h" - -// POSIX Large File Support redefines open -> open64 -#if defined(open) -# undef open -#endif - -#ifndef TQT_NO_MIME - -#include "tqdragobject.h" -#include "tqtextcodec.h" -#include "tqapplication.h" -#include "tqpoint.h" -#include "tqwidget.h" -#include "tqbuffer.h" -#include "tqgif.h" -#include "tqregexp.h" -#include "tqdir.h" -#include <ctype.h> - -// both a struct for storing stuff in and a wrapper to avoid polluting -// the name space - -class TQDragObjectData -{ -public: - TQDragObjectData(): hot(0,0) {} - TQPixmap pixmap; - TQPoint hot; - // store default cursors - TQPixmap *pm_cursor; -}; - -static TQWidget* last_target; - -/*! - After the drag completes, this function will return the TQWidget - which received the drop, or 0 if the data was dropped on another - application. - - This can be useful for detecting the case where drag and drop is - to and from the same widget. -*/ -TQWidget * TQDragObject::target() -{ - return last_target; -} - -/*! - \internal - Sets the target. -*/ -void TQDragObject::setTarget(QWidget* t) -{ - last_target = TQT_TQWIDGET(t); -} - -class TQStoredDragData -{ -public: - TQStoredDragData() {} - const char* fmt; - TQByteArray enc; -}; - - -// These pixmaps approximate the images in the Windows User Interface Guidelines. - -// XPM - -static const char * const move_xpm[] = { -"11 20 3 1", -". c None", -#if defined(TQ_WS_WIN) -"a c #000000", -"X c #FFFFFF", // Windows cursor is traditionally white -#else -"a c #FFFFFF", -"X c #000000", // X11 cursor is traditionally black -#endif -"aa.........", -"aXa........", -"aXXa.......", -"aXXXa......", -"aXXXXa.....", -"aXXXXXa....", -"aXXXXXXa...", -"aXXXXXXXa..", -"aXXXXXXXXa.", -"aXXXXXXXXXa", -"aXXXXXXaaaa", -"aXXXaXXa...", -"aXXaaXXa...", -"aXa..aXXa..", -"aa...aXXa..", -"a.....aXXa.", -"......aXXa.", -".......aXXa", -".......aXXa", -"........aa."}; - -/* XPM */ -static const char * const copy_xpm[] = { -"24 30 3 1", -". c None", -"a c #000000", -"X c #FFFFFF", -#if defined(TQ_WS_WIN) // Windows cursor is traditionally white -"aa......................", -"aXa.....................", -"aXXa....................", -"aXXXa...................", -"aXXXXa..................", -"aXXXXXa.................", -"aXXXXXXa................", -"aXXXXXXXa...............", -"aXXXXXXXXa..............", -"aXXXXXXXXXa.............", -"aXXXXXXaaaa.............", -"aXXXaXXa................", -"aXXaaXXa................", -"aXa..aXXa...............", -"aa...aXXa...............", -"a.....aXXa..............", -"......aXXa..............", -".......aXXa.............", -".......aXXa.............", -"........aa...aaaaaaaaaaa", -#else -"XX......................", -"XaX.....................", -"XaaX....................", -"XaaaX...................", -"XaaaaX..................", -"XaaaaaX.................", -"XaaaaaaX................", -"XaaaaaaaX...............", -"XaaaaaaaaX..............", -"XaaaaaaaaaX.............", -"XaaaaaaXXXX.............", -"XaaaXaaX................", -"XaaXXaaX................", -"XaX..XaaX...............", -"XX...XaaX...............", -"X.....XaaX..............", -"......XaaX..............", -".......XaaX.............", -".......XaaX.............", -"........XX...aaaaaaaaaaa", -#endif -".............aXXXXXXXXXa", -".............aXXXXXXXXXa", -".............aXXXXaXXXXa", -".............aXXXXaXXXXa", -".............aXXaaaaaXXa", -".............aXXXXaXXXXa", -".............aXXXXaXXXXa", -".............aXXXXXXXXXa", -".............aXXXXXXXXXa", -".............aaaaaaaaaaa"}; - -/* XPM */ -static const char * const link_xpm[] = { -"24 30 3 1", -". c None", -"a c #000000", -"X c #FFFFFF", -#if defined(TQ_WS_WIN) // Windows cursor is traditionally white -"aa......................", -"aXa.....................", -"aXXa....................", -"aXXXa...................", -"aXXXXa..................", -"aXXXXXa.................", -"aXXXXXXa................", -"aXXXXXXXa...............", -"aXXXXXXXXa..............", -"aXXXXXXXXXa.............", -"aXXXXXXaaaa.............", -"aXXXaXXa................", -"aXXaaXXa................", -"aXa..aXXa...............", -"aa...aXXa...............", -"a.....aXXa..............", -"......aXXa..............", -".......aXXa.............", -".......aXXa.............", -"........aa...aaaaaaaaaaa", -#else -"XX......................", -"XaX.....................", -"XaaX....................", -"XaaaX...................", -"XaaaaX..................", -"XaaaaaX.................", -"XaaaaaaX................", -"XaaaaaaaX...............", -"XaaaaaaaaX..............", -"XaaaaaaaaaX.............", -"XaaaaaaXXXX.............", -"XaaaXaaX................", -"XaaXXaaX................", -"XaX..XaaX...............", -"XX...XaaX...............", -"X.....XaaX..............", -"......XaaX..............", -".......XaaX.............", -".......XaaX.............", -"........XX...aaaaaaaaaaa", -#endif -".............aXXXXXXXXXa", -".............aXXXaaaaXXa", -".............aXXXXaaaXXa", -".............aXXXaaaaXXa", -".............aXXaaaXaXXa", -".............aXXaaXXXXXa", -".............aXXaXXXXXXa", -".............aXXXaXXXXXa", -".............aXXXXXXXXXa", -".............aaaaaaaaaaa"}; - -#ifndef TQT_NO_DRAGANDDROP - -// the universe's only drag manager -TQDragManager * qt_dnd_manager = 0; - - -TQDragManager::TQDragManager() - : TQObject( TQT_TQOBJECT(tqApp), "global drag manager" ) -{ - n_cursor = 3; - pm_cursor = new TQPixmap[n_cursor]; - pm_cursor[0] = TQPixmap((const char **)move_xpm); - pm_cursor[1] = TQPixmap((const char **)copy_xpm); - pm_cursor[2] = TQPixmap((const char **)link_xpm); -#if defined(TQ_WS_X11) - createCursors(); // Xcursors cache can hold only 8 bitmaps (4 cursors) -#endif - object = 0; - dragSource = 0; - dropWidget = 0; - if ( !qt_dnd_manager ) - qt_dnd_manager = this; - beingCancelled = FALSE; - restoreCursor = FALSE; - willDrop = FALSE; -} - - -TQDragManager::~TQDragManager() -{ -#ifndef TQT_NO_CURSOR - if ( restoreCursor ) - TQApplication::restoreOverrideCursor(); -#endif - qt_dnd_manager = 0; - delete [] pm_cursor; -} - -#endif - - -/*! - Constructs a drag object called \a name, which is a child of \a - dragSource. - - Note that the drag object will be deleted when \a dragSource is - deleted. -*/ - -TQDragObject::TQDragObject( QWidget * dragSource, const char * name ) - : TQObject( TQT_TQOBJECT(dragSource), name ) -{ - d = new TQDragObjectData(); - d->pm_cursor = 0; -#ifndef TQT_NO_DRAGANDDROP - if ( !qt_dnd_manager && tqApp ) - (void)new TQDragManager(); -#endif -} - - -/*! - Destroys the drag object, canceling any drag and drop operation in - which it is involved, and frees up the storage used. -*/ - -TQDragObject::~TQDragObject() -{ -#ifndef TQT_NO_DRAGANDDROP - if ( qt_dnd_manager && qt_dnd_manager->object == this ) - qt_dnd_manager->cancel( FALSE ); - if ( d->pm_cursor ) { - for ( int i = 0; i < qt_dnd_manager->n_cursor; i++ ) - qt_dnd_manager->pm_cursor[i] = d->pm_cursor[i]; - delete [] d->pm_cursor; - } -#endif - delete d; -} - -#ifndef TQT_NO_DRAGANDDROP -/*! - Set the pixmap \a pm to display while dragging the object. The - platform-specific implementation will use this where it can - so - provide a small masked pixmap, and do not assume that the user - will actually see it. For example, cursors on Windows 95 are of - limited size. - - The \a hotspot is the point on (or off) the pixmap that should be - under the cursor as it is dragged. It is relative to the top-left - pixel of the pixmap. - - \warning We have seen problems with drag cursors on different - graphics hardware and driver software on Windows. Setting the - graphics acceleration in the display settings down one tick solved - the problems in all cases. -*/ -void TQDragObject::setPixmap(QPixmap pm, const QPoint& hotspot) -{ - d->pixmap = pm; - d->hot = hotspot; - if ( qt_dnd_manager && qt_dnd_manager->object == this ) - qt_dnd_manager->updatePixmap(); -} - -/*! - \overload - Uses a hotspot that positions the pixmap below and to the right of - the mouse pointer. This allows the user to clearly see the point - on the window which they are dragging the data onto. -*/ -void TQDragObject::setPixmap(QPixmap pm) -{ - setPixmap(pm,TQPoint(-10, -10)); -} - -/*! - Returns the currently set pixmap (which \link TQPixmap::isNull() - isNull()\endlink if none is set). -*/ -TQPixmap TQDragObject::pixmap() const -{ - return d->pixmap; -} - -/*! - Returns the currently set pixmap hotspot. -*/ -TQPoint TQDragObject::pixmapHotSpot() const -{ - return d->hot; -} - -#if 0 - -// ## reevaluate for TQt 4 -/*! - Set the \a cursor used when dragging in mode \a m. - Note: X11 only allow bitmaps for cursors. -*/ -void TQDragObject::setCursor( DragMode m, const TQPixmap &cursor ) -{ - if ( d->pm_cursor == 0 ) { - // safe default cursors - d->pm_cursor = new TQPixmap[qt_dnd_manager->n_cursor]; - for ( int i = 0; i < qt_dnd_manager->n_cursor; i++ ) - d->pm_cursor[i] = qt_dnd_manager->pm_cursor[i]; - } - - int index; - switch ( m ) { - case DragCopy: - index = 1; - break; - case DragLink: - index = 2; - break; - default: - index = 0; - break; - } - - // override default cursor - for ( index = 0; index < qt_dnd_manager->n_cursor; index++ ) - qt_dnd_manager->pm_cursor[index] = cursor; -} - -/*! - Returns the cursor used when dragging in mode \a m, or null if no cursor - has been set for that mode. -*/ -TQPixmap *TQDragObject::cursor( DragMode m ) const -{ - if ( !d->pm_cursor ) - return 0; - - int index; - switch ( m ) { - case DragCopy: - index = 1; - break; - case DragLink: - index = 2; - break; - default: - index = 0; - break; - } - - return qt_dnd_manager->pm_cursor+index; -} - -#endif // 0 - -/*! - Starts a drag operation using the contents of this object, using - DragDefault mode. - - The function returns TRUE if the caller should delete the original - copy of the dragged data (but see target()); otherwise returns - FALSE. - - If the drag contains \e references to information (e.g. file names - in a TQUriDrag are references) then the return value should always - be ignored, as the target is expected to manipulate the - referred-to content directly. On X11 the return value should - always be correct anyway, but on Windows this is not necessarily - the case (e.g. the file manager starts a background process to - move files, so the source \e{must not} delete the files!) -*/ -bool TQDragObject::drag() -{ - return drag( DragDefault ); -} - - -/*! - Starts a drag operation using the contents of this object, using - \c DragMove mode. Be sure to read the constraints described in - drag(). - - \sa drag() dragCopy() dragLink() -*/ -bool TQDragObject::dragMove() -{ - return drag( DragMove ); -} - - -/*! - Starts a drag operation using the contents of this object, using - \c DragCopy mode. Be sure to read the constraints described in - drag(). - - \sa drag() dragMove() dragLink() -*/ -void TQDragObject::dragCopy() -{ - (void)drag( DragCopy ); -} - -/*! - Starts a drag operation using the contents of this object, using - \c DragLink mode. Be sure to read the constraints described in - drag(). - - \sa drag() dragCopy() dragMove() -*/ -void TQDragObject::dragLink() -{ - (void)drag( DragLink ); -} - - -/*! - \enum TQDragObject::DragMode - - This enum describes the possible drag modes. - - \value DragDefault The mode is determined heuristically. - \value DragCopy The data is copied, never moved. - \value DragMove The data is moved, if dragged at all. - \value DragLink The data is linked, if dragged at all. - \value DragCopyOrMove The user chooses the mode by using a - control key to switch from the default. -*/ - - -/*! - \overload - Starts a drag operation using the contents of this object. - - At this point, the object becomes owned by TQt, not the - application. You should not delete the drag object or anything it - references. The actual transfer of data to the target application - will be done during future event processing - after that time the - drag object will be deleted. - - Returns TRUE if the dragged data was dragged as a \e move, - indicating that the caller should remove the original source of - the data (the drag object must continue to have a copy); otherwise - returns FALSE. - - The \a mode specifies the drag mode (see - \l{TQDragObject::DragMode}.) Normally one of the simpler drag(), - dragMove(), or dragCopy() functions would be used instead. -*/ -bool TQDragObject::drag( DragMode mode ) -{ - if ( qt_dnd_manager ) - return qt_dnd_manager->drag( this, mode ); - else - return FALSE; -} - -#endif - - -/*! - Returns a pointer to the drag source where this object originated. -*/ - -TQWidget * TQDragObject::source() -{ - if ( parent() && parent()->isWidgetType() ) - return (TQWidget *)parent(); - else - return 0; -} - - -/*! - \class TQDragObject tqdragobject.h - - \brief The TQDragObject class encapsulates MIME-based data - transfer. - - \ingroup draganddrop - - TQDragObject is the base class for all data that needs to be - transferred between and within applications, both for drag and - drop and for the \link tqclipboard.html clipboard\endlink. - - See the \link dnd.html Drag-and-drop documentation\endlink for an - overview of how to provide drag and drop in your application. - - See the TQClipboard documentation for an overview of how to provide - cut-and-paste in your application. - - The drag() function is used to start a drag operation. You can - specify the \l DragMode in the call or use one of the convenience - functions dragCopy(), dragMove() or dragLink(). The drag source - where the data originated is retrieved with source(). If the data - was dropped on a widget within the application, target() will - return a pointer to that widget. Specify the pixmap to display - during the drag with setPixmap(). -*/ - -static -void stripws(TQCString& s) -{ - int f; - while ( (f=s.find(' ')) >= 0 ) - s.remove(f,1); -} - -static -const char * staticCharset(int i) -{ - static TQCString localcharset; - - switch ( i ) { - case 0: - return "UTF-8"; - case 1: - return "ISO-10646-UCS-2"; - case 2: - return ""; // in the 3rd place - some Xdnd targets might only look at 3 - case 3: - if ( localcharset.isNull() ) { - TQTextCodec *localCodec = TQTextCodec::codecForLocale(); - if ( localCodec ) { - localcharset = localCodec->name(); - localcharset = localcharset.lower(); - stripws(localcharset); - } else { - localcharset = ""; - } - } - return localcharset; - } - return 0; -} - - -class TQTextDragPrivate { -public: - TQTextDragPrivate(); - - enum { nfmt=4 }; - - TQString txt; - TQCString fmt[nfmt]; - TQCString subtype; - - void setSubType(const TQCString & st) - { - subtype = st.lower(); - for ( int i=0; i<nfmt; i++ ) { - fmt[i] = "text/"; - fmt[i].append(subtype); - TQCString cs = staticCharset(i); - if ( !cs.isEmpty() ) { - fmt[i].append(";charset="); - fmt[i].append(cs); - } - } - } -}; - -inline TQTextDragPrivate::TQTextDragPrivate() -{ - setSubType("plain"); -} - -/*! - Sets the MIME subtype of the text being dragged to \a st. The - default subtype is "plain", so the default MIME type of the text - is "text/plain". You might use this to declare that the text is - "text/html" by calling setSubtype("html"). -*/ -void TQTextDrag::setSubtype( const TQCString & st) -{ - d->setSubType(st); -} - -/*! - \class TQTextDrag tqdragobject.h - - \brief The TQTextDrag class is a drag and drop object for - transferring plain and Unicode text. - - \ingroup draganddrop - - Plain text is passed in a TQString which may contain multiple lines - (i.e. may contain newline characters). The drag target will receive - the newlines according to the runtime environment, e.g. LF on Unix, - and CRLF on Windows. - - TQt provides no built-in mechanism for delivering only a single-line. - - For more information about drag and drop, see the TQDragObject class - and the \link dnd.html drag and drop documentation\endlink. -*/ - - -/*! - Constructs a text drag object and sets its data to \a text. \a - dragSource must be the drag source; \a name is the object name. -*/ - -TQTextDrag::TQTextDrag( const TQString &text, - TQWidget * dragSource, const char * name ) - : TQDragObject( dragSource, name ) -{ - d = new TQTextDragPrivate; - setText( text ); -} - - -/*! - Constructs a default text drag object. \a dragSource must be the - drag source; \a name is the object name. -*/ - -TQTextDrag::TQTextDrag( TQWidget * dragSource, const char * name ) - : TQDragObject( dragSource, name ) -{ - d = new TQTextDragPrivate; -} - - -/*! - Destroys the text drag object and frees up all allocated - resources. -*/ -TQTextDrag::~TQTextDrag() -{ - delete d; -} - - -/*! - Sets the text to be dragged to \a text. You will need to call this - if you did not pass the text during construction. -*/ -void TQTextDrag::setText( const TQString &text ) -{ - d->txt = text; -} - - -/*! - \reimp -*/ -const char * TQTextDrag::format(int i) const -{ - if ( i >= d->nfmt ) - return 0; - return d->fmt[i]; -} - -TQTextCodec* qt_findcharset(const TQCString& mimetype) -{ - int i=mimetype.find("charset="); - if ( i >= 0 ) { - TQCString cs = mimetype.mid(i+8); - stripws(cs); - i = cs.find(';'); - if ( i >= 0 ) - cs = cs.left(i); - // win98 often has charset=utf16, and we need to get the correct codec for - // it to be able to get Unicode text drops. - if ( cs == "utf16" ) - cs = "ISO-10646-UCS-2"; - // May return 0 if unknown charset - return TQTextCodec::codecForName(cs); - } - // no charset=, use locale - return TQTextCodec::codecForLocale(); -} - -static TQTextCodec *codecForHTML(const TQCString &ba) -{ - // determine charset - int mib = 0; - int pos; - TQTextCodec *c = 0; - - if (ba.size() > 1 && (((uchar)ba[0] == 0xfe && (uchar)ba[1] == 0xff) - || ((uchar)ba[0] == 0xff && (uchar)ba[1] == 0xfe))) { - mib = 1000; // utf16 - } else if (ba.size() > 2 - && (uchar)ba[0] == 0xef - && (uchar)ba[1] == 0xbb - && (uchar)ba[2] == 0xbf) { - mib = 106; // utf-8 - } else { - pos = 0; - while ((pos = ba.find("<meta http-equiv=", pos, FALSE)) != -1) { - int end = ba.find('>', pos+1); - if (end == -1) - break; - pos = ba.find("charset=", pos, FALSE) + (int)strlen("charset="); - if (pos != -1 && pos < end) { - int pos2 = ba.find('\"', pos+1); - TQCString cs = ba.mid(pos, pos2-pos); - c = TQTextCodec::codecForName(cs); - if (c) - return c; - } - pos = end; - } - } - if (mib) - c = TQTextCodec::codecForMib(mib); - - return c; -} - -static -TQTextCodec* findcodec(const TQMimeSource* e) -{ - TQTextCodec* r = 0; - const char* f; - int i; - for ( i=0; (f=e->format(i)); i++ ) { - bool html = !qstrnicmp(f, "text/html", 9); - if (html) - r = codecForHTML(TQCString(e->tqencodedData(f))); - if (!r) - r = qt_findcharset(TQCString(f).lower()); - if (r) - return r; - } - return 0; -} - - - -/*! - \reimp -*/ -TQByteArray TQTextDrag::tqencodedData(const char* mime) const -{ - TQCString r; - if ( 0==qstrnicmp(mime,"text/",5) ) { - TQCString m(mime); - m = m.lower(); - TQTextCodec *codec = qt_findcharset(m); - if ( !codec ) - return r; - TQString text( d->txt ); -#if defined(TQ_WS_WIN) - int index = text.find( TQString::tqfromLatin1("\r\n"), 0 ); - while ( index != -1 ) { - text.replace( index, 2, TQChar('\n') ); - index = text.find( "\r\n", index ); - } -#endif - r = codec->fromUnicode(text); - if (!codec || codec->mibEnum() != 1000) { - // Don't include NUL in size (TQCString::resize() adds NUL) -#if defined(TQ_WS_WIN) - // This is needed to ensure the \0 isn't lost on Windows 95 - if ( qWinVersion() & TQt::WV_DOS_based ) - ((TQByteArray&)r).resize(r.length()+1); - else -#endif - ((TQByteArray&)r).resize(r.length()); - } - } - return r; -} - -/*! - Returns TRUE if the information in \a e can be decoded into a - TQString; otherwise returns FALSE. - - \sa decode() -*/ -bool TQTextDrag::canDecode( const TQMimeSource* e ) -{ - const char* f; - for (int i=0; (f=e->format(i)); i++) { - if ( 0==qstrnicmp(f,"text/",5) ) { - return findcodec(e) != 0; - } - } - return 0; -} - -/*! - \overload - - Attempts to decode the dropped information in \a e into \a str. - Returns TRUE if successful; otherwise returns FALSE. If \a subtype - is null, any text subtype is accepted; otherwise only the - specified \a subtype is accepted. - - \sa canDecode() -*/ -bool TQTextDrag::decode( const TQMimeSource* e, TQString& str, TQCString& subtype ) -{ - if(!e) - return FALSE; - - // when subtype is not specified, try text/plain first, otherwise this may read - // things like text/x-moz-url even though better targets are available - if( subtype.isNull()) { - TQCString subtmp = "plain"; - if( decode( e, str, subtmp )) { - subtype = subtmp; - return true; - } - } - - if ( e->cacheType == TQMimeSource::Text ) { - str = *e->cache.txt.str; - subtype = *e->cache.txt.subtype; - return TRUE; - } - - const char* mime; - for (int i=0; (mime = e->format(i)); i++) { - if ( 0==qstrnicmp(mime,"text/",5) ) { - TQCString m(mime); - m = m.lower(); - int semi = m.find(';'); - if ( semi < 0 ) - semi = m.length(); - TQCString foundst = m.mid(5,semi-5); - if ( subtype.isNull() || foundst == subtype ) { - bool html = !qstrnicmp(mime, "text/html", 9); - TQTextCodec* codec = 0; - if (html) { - TQByteArray bytes = e->tqencodedData(mime); - // search for the charset tag in the HTML - codec = codecForHTML(TQCString(bytes.data(), bytes.size())); - } - if (!codec) - codec = qt_findcharset(m); - if ( codec ) { - TQByteArray payload; - - payload = e->tqencodedData(mime); - if ( payload.size() ) { - int l; - if ( codec->mibEnum() != 1000) { - // length is at NUL or payload.size() - l = 0; - while ( l < (int)payload.size() && payload[l] ) - l++; - } else { - l = payload.size(); - } - - str = codec->toUnicode(payload,l); - - if ( subtype.isNull() ) - subtype = foundst; - - TQMimeSource *m = (TQMimeSource*)e; - m->clearCache(); - m->cacheType = TQMimeSource::Text; - m->cache.txt.str = new TQString( str ); - m->cache.txt.subtype = new TQCString( subtype ); - - return TRUE; - } - } - } - } - } - return FALSE; -} - -/*! - Attempts to decode the dropped information in \a e into \a str. - Returns TRUE if successful; otherwise returns FALSE. - - \sa canDecode() -*/ -bool TQTextDrag::decode( const TQMimeSource* e, TQString& str ) -{ - TQCString st; - return decode(e,str,st); -} - - -/* - TQImageDrag could use an internal MIME type for communicating TQPixmaps - and TQImages rather than always converting to raw data. This is available - for that purpose and others. It is not currently used. -*/ -class TQImageDragData -{ -public: -}; - - -/*! - \class TQImageDrag tqdragobject.h - - \brief The TQImageDrag class provides a drag and drop object for - transferring images. - - \ingroup draganddrop - - Images are offered to the receiving application in multiple - formats, determined by TQt's \link TQImage::outputFormats() output - formats\endlink. - - For more information about drag and drop, see the TQDragObject - class and the \link dnd.html drag and drop documentation\endlink. -*/ - -/*! - Constructs an image drag object and sets its data to \a image. \a - dragSource must be the drag source; \a name is the object name. -*/ - -TQImageDrag::TQImageDrag( QImage image, - QWidget * dragSource, const char * name ) - : TQDragObject( dragSource, name ), - d(0) -{ - setImage( image ); -} - -/*! - Constructs a default image drag object. \a dragSource must be the - drag source; \a name is the object name. -*/ - -TQImageDrag::TQImageDrag( QWidget * dragSource, const char * name ) - : TQDragObject( dragSource, name ), - d(0) -{ -} - - -/*! - Destroys the image drag object and frees up all allocated - resources. -*/ - -TQImageDrag::~TQImageDrag() -{ - // nothing -} - - -/*! - Sets the image to be dragged to \a image. You will need to call - this if you did not pass the image during construction. -*/ -void TQImageDrag::setImage( QImage image ) -{ - img = image; // ### detach? - ofmts = TQImage::outputFormats(); - ofmts.remove("PBM"); // remove non-raw PPM - if ( image.depth()!=32 ) { - // BMP better than PPM for paletted images - if ( ofmts.remove("BMP") ) // move to front - ofmts.insert(0,"BMP"); - } - // PNG is best of all - if ( ofmts.remove("PNG") ) // move to front - ofmts.insert(0,"PNG"); - - if(cacheType == TQMimeSource::NoCache) { //cache it - cacheType = TQMimeSource::Graphics; - cache.gfx.img = new TQImage( img ); - cache.gfx.pix = 0; - } -} - -/*! - \reimp -*/ -const char * TQImageDrag::format(int i) const -{ - if ( i < (int)ofmts.count() ) { - static TQCString str; - str.sprintf("image/%s",(((TQImageDrag*)this)->ofmts).at(i)); - str = str.lower(); - if ( str == "image/pbmraw" ) - str = "image/ppm"; - return str; - } else { - return 0; - } -} - -/*! - \reimp -*/ -TQByteArray TQImageDrag::tqencodedData(const char* fmt) const -{ - if ( qstrnicmp( fmt, "image/", 6 )==0 ) { - TQCString f = fmt+6; - TQByteArray data; - TQBuffer w( data ); - w.open( IO_WriteOnly ); - TQImageIO io( &w, f.upper() ); - io.setImage( img ); - if ( !io.write() ) - return TQByteArray(); - w.close(); - return data; - } else { - return TQByteArray(); - } -} - -/*! - Returns TRUE if the information in mime source \a e can be decoded - into an image; otherwise returns FALSE. - - \sa decode() -*/ -bool TQImageDrag::canDecode( const TQMimeSource* e ) { - TQStrList fileFormats = TQImageIO::inputFormats(); - - fileFormats.first(); - while ( fileFormats.current()) { - TQCString format = fileFormats.current(); - TQCString type = "image/" + format.lower(); - if ( e->provides(type.data())) - return TRUE; - fileFormats.next(); - } - - return FALSE; -} - -/*! - Attempts to decode the dropped information in mime source \a e - into \a img. Returns TRUE if successful; otherwise returns FALSE. - - \sa canDecode() -*/ -bool TQImageDrag::decode( const TQMimeSource* e, QImage& img ) -{ - if ( !e ) - return FALSE; - if ( e->cacheType == TQMimeSource::Graphics ) { - img = *e->cache.gfx.img; - return TRUE; - } - - TQByteArray payload; - TQStrList fileFormats = TQImageIO::inputFormats(); - // PNG is best of all - if ( fileFormats.remove("PNG") ) // move to front - fileFormats.insert(0,"PNG"); - fileFormats.first(); - while ( fileFormats.current() ) { - TQCString format = fileFormats.current(); - fileFormats.next(); - - TQCString type = "image/" + format.lower(); - if ( ! e->provides( type.data() ) ) continue; - payload = e->tqencodedData( type.data() ); - if ( !payload.isEmpty() ) - break; - } - - if ( payload.isEmpty() ) - return FALSE; - - img.loadFromData(payload); - if ( img.isNull() ) - return FALSE; - TQMimeSource *m = (TQMimeSource*)e; - m->clearCache(); - m->cacheType = TQMimeSource::Graphics; - m->cache.gfx.img = new TQImage( img ); - m->cache.gfx.pix = 0; - return TRUE; -} - -/*! - \overload - - Attempts to decode the dropped information in mime source \a e - into pixmap \a pm. Returns TRUE if successful; otherwise returns - FALSE. - - This is a convenience function that converts to a TQPixmap via a - TQImage. - - \sa canDecode() -*/ -bool TQImageDrag::decode( const TQMimeSource* e, QPixmap& pm ) -{ - if ( !e ) - return FALSE; - - if ( e->cacheType == TQMimeSource::Graphics && e->cache.gfx.pix) { - pm = *e->cache.gfx.pix; - return TRUE; - } - - TQImage img; - // We avoid dither, since the image probably came from this display - if ( decode( e, img ) ) { - if ( !pm.convertFromImage( img, Qt::AvoidDither ) ) - return FALSE; - // decode initialized the cache for us - - TQMimeSource *m = (TQMimeSource*)e; - m->cache.gfx.pix = new TQPixmap( pm ); - return TRUE; - } - return FALSE; -} - - - - -/*! - \class TQStoredDrag tqdragobject.h - \brief The TQStoredDrag class provides a simple stored-value drag object for arbitrary MIME data. - - \ingroup draganddrop - - When a block of data has only one representation, you can use a - TQStoredDrag to hold it. - - For more information about drag and drop, see the TQDragObject - class and the \link dnd.html drag and drop documentation\endlink. -*/ - -/*! - Constructs a TQStoredDrag. The \a dragSource and \a name are passed - to the TQDragObject constructor, and the format is set to \a - mimeType. - - The data will be unset. Use setEncodedData() to set it. -*/ -TQStoredDrag::TQStoredDrag( const char* mimeType, QWidget * dragSource, const char * name ) : - TQDragObject(dragSource,name) -{ - d = new TQStoredDragData(); - d->fmt = qstrdup(mimeType); -} - -/*! - Destroys the drag object and frees up all allocated resources. -*/ -TQStoredDrag::~TQStoredDrag() -{ - delete [] (char*)d->fmt; - delete d; -} - -/*! - \reimp -*/ -const char * TQStoredDrag::format(int i) const -{ - if ( i==0 ) - return d->fmt; - else - return 0; -} - - -/*! - Sets the encoded data of this drag object to \a tqencodedData. The - encoded data is what's delivered to the drop sites. It must be in - a strictly defined and portable format. - - The drag object can't be dropped (by the user) until this function - has been called. -*/ - -void TQStoredDrag::setEncodedData( const TQByteArray & tqencodedData ) -{ - d->enc = tqencodedData.copy(); -} - -/*! - Returns the stored data. \a m contains the data's format. - - \sa setEncodedData() -*/ -TQByteArray TQStoredDrag::tqencodedData(const char* m) const -{ - if ( !qstricmp(m,d->fmt) ) - return d->enc; - else - return TQByteArray(); -} - - -/*! - \class TQUriDrag tqdragobject.h - \brief The TQUriDrag class provides a drag object for a list of URI references. - - \ingroup draganddrop - - URIs are a useful way to refer to files that may be distributed - across multiple machines. A URI will often refer to a file on a - machine local to both the drag source and the drop target, so the - URI can be equivalent to passing a file name but is more - extensible. - - Use URIs in Unicode form so that the user can comfortably edit and - view them. For use in HTTP or other protocols, use the correctly - escaped ASCII form. - - You can convert a list of file names to file URIs using - setFileNames(), or into human-readble form with setUnicodeUris(). - - Static functions are provided to convert between filenames and - URIs, e.g. uriToLocalFile() and localFileToUri(), and to and from - human-readable form, e.g. uriToUnicodeUri(), tqunicodeUriToUri(). - You can also decode URIs from a mimesource into a list with - decodeLocalFiles() and decodeToUnicodeUris(). -*/ - -/*! - Constructs an object to drag the list of URIs in \a uris. The \a - dragSource and \a name arguments are passed on to TQStoredDrag. - Note that URIs are always in escaped UTF8 encoding. -*/ -TQUriDrag::TQUriDrag( TQStrList uris, - TQWidget * dragSource, const char * name ) : - TQStoredDrag( "text/uri-list", dragSource, name ) -{ - setUris(uris); -} - -/*! - Constructs an object to drag. You must call setUris() before you - start the drag(). Passes \a dragSource and \a name to the - TQStoredDrag constructor. -*/ -TQUriDrag::TQUriDrag( TQWidget * dragSource, const char * name ) : - TQStoredDrag( "text/uri-list", dragSource, name ) -{ -} - -/*! - Destroys the object. -*/ -TQUriDrag::~TQUriDrag() -{ -} - -/*! - Changes the list of \a uris to be dragged. - - Note that URIs are always in escaped UTF8 encoding. -*/ -void TQUriDrag::setUris( TQStrList uris ) -{ - TQByteArray a; - int c=0; - for ( const char* s = uris.first(); s; s = uris.next() ) { - int l = tqstrlen(s); - a.resize(c+l+2); - memcpy(a.data()+c,s,l); - memcpy(a.data()+c+l,"\r\n",2); - c+=l+2; - } - a.resize(c+1); - a[c] = 0; - setEncodedData(a); -} - - -/*! - Returns TRUE if decode() would be able to decode \a e; otherwise - returns FALSE. -*/ -bool TQUriDrag::canDecode( const TQMimeSource* e ) -{ - return e->provides( "text/uri-list" ); -} - -/*! - Decodes URIs from \a e, placing the result in \a l (which is first - cleared). - - Returns TRUE if \a e contained a valid list of URIs; otherwise - returns FALSE. -*/ -bool TQUriDrag::decode( const TQMimeSource* e, TQStrList& l ) -{ - TQByteArray payload = e->tqencodedData( "text/uri-list" ); - if ( payload.size() ) { - l.clear(); - l.setAutoDelete(TRUE); - uint c=0; - const char* d = payload.data(); - while (c < payload.size() && d[c]) { - uint f = c; - // Find line end - while (c < payload.size() && d[c] && d[c]!='\r' - && d[c] != '\n') - c++; - TQCString s(d+f,c-f+1); - if ( s[0] != '#' ) // non-comment? - l.append( s ); - // Skip junk - while (c < payload.size() && d[c] && - (d[c]=='\n' || d[c]=='\r')) - c++; - } - return TRUE; - } - return FALSE; -} - -static uint htod( int h ) -{ - if ( isdigit(h) ) - return h - '0'; - return tolower( h ) - 'a' + 10; -} - -/*! - \fn TQUriDrag::setFilenames( const TQStringList & ) - \obsolete - - Use setFileNames() instead (notice the N). -*/ - -/*! - Sets the URIs to be the local-file URIs equivalent to \a fnames. - - \sa localFileToUri(), setUris() -*/ -void TQUriDrag::setFileNames( const TQStringList & fnames ) -{ - TQStrList uris; - for ( TQStringList::ConstIterator i = fnames.begin(); - i != fnames.end(); ++i ) { - TQCString fileUri = localFileToUri(*i); - if (!fileUri.isEmpty()) - uris.append(fileUri); - } - setUris( uris ); -} - -/*! - Sets the URIs in \a uuris to be the Unicode URIs (only useful for - displaying to humans). - - \sa localFileToUri(), setUris() -*/ -void TQUriDrag::setUnicodeUris( const TQStringList & uuris ) -{ - TQStrList uris; - for ( TQStringList::ConstIterator i = uuris.begin(); - i != uuris.end(); ++i ) - uris.append( tqunicodeUriToUri(*i) ); - setUris( uris ); -} - -/*! - Returns the URI equivalent of the Unicode URI given in \a uuri - (only useful for displaying to humans). - - \sa uriToLocalFile() -*/ -TQCString TQUriDrag::tqunicodeUriToUri(const TQString& uuri) -{ - TQCString utf8 = uuri.utf8(); - TQCString escutf8; - int n = utf8.length(); - bool isFile = uuri.startsWith("file://"); - for (int i=0; i<n; i++) { - if ( (utf8[i] >= 'a' && utf8[i] <= 'z') - || utf8[i] == '/' - || (utf8[i] >= '0' && utf8[i] <= '9') - || (utf8[i] >= 'A' && utf8[i] <= 'Z') - - || utf8[i] == '-' || utf8[i] == '_' - || utf8[i] == '.' || utf8[i] == '!' - || utf8[i] == '~' || utf8[i] == '*' - || utf8[i] == '(' || utf8[i] == ')' - || utf8[i] == '\'' - - // Allow this through, so that all URI-references work. - || (!isFile && utf8[i] == '#') - - || utf8[i] == ';' - || utf8[i] == '?' || utf8[i] == ':' - || utf8[i] == '@' || utf8[i] == '&' - || utf8[i] == '=' || utf8[i] == '+' - || utf8[i] == '$' || utf8[i] == ',' ) - { - escutf8 += utf8[i]; - } else { - // Everything else is escaped as %HH - TQCString s(4); - s.sprintf("%%%02x",(uchar)utf8[i]); - escutf8 += s; - } - } - return escutf8; -} - -/*! - Returns the URI equivalent to the absolute local file \a filename. - - \sa uriToLocalFile() -*/ -TQCString TQUriDrag::localFileToUri(const TQString& filename) -{ - TQString r = filename; - - //check that it is an absolute file - if (TQDir::isRelativePath(r)) - return TQCString(); - -#ifdef TQ_WS_WIN - - - bool hasHost = FALSE; - // convert form network path - if (r.left(2) == "\\\\" || r.left(2) == "//") { - r.remove(0, 2); - hasHost = TRUE; - } - - // Slosh -> Slash - int slosh; - while ( (slosh=r.find('\\')) >= 0 ) { - r[slosh] = '/'; - } - - // Drive - if ( r[0] != '/' && !hasHost) - r.insert(0,'/'); - -#endif -#if defined ( TQ_WS_X11 ) && 0 - // URL without the hostname is considered to be errorneous by XDnD. - // See: http://www.newplanetsoftware.com/xdnd/dragging_files.html - // This feature is not active because this would break dnd between old and new qt apps. - char hostname[257]; - if ( gethostname( hostname, 255 ) == 0 ) { - hostname[256] = '\0'; - r.prepend( TQString::tqfromLatin1( hostname ) ); - } -#endif - return tqunicodeUriToUri(TQString("file://" + r)); -} - -/*! - Returns the Unicode URI (only useful for displaying to humans) - equivalent of \a uri. - - Note that URIs are always in escaped UTF8 encoding. - - \sa localFileToUri() -*/ -TQString TQUriDrag::uriToUnicodeUri(const char* uri) -{ - TQCString utf8; - - while (*uri) { - switch (*uri) { - case '%': { - uint ch = (uchar) uri[1]; - if ( ch && uri[2] ) { - ch = htod( ch ) * 16 + htod( (uchar) uri[2] ); - utf8 += (char) ch; - uri += 2; - } - } - break; - default: - utf8 += *uri; - } - ++uri; - } - - return TQString::fromUtf8(utf8); -} - -/*! - Returns the name of a local file equivalent to \a uri or a null - string if \a uri is not a local file. - - Note that URIs are always in escaped UTF8 encoding. - - \sa localFileToUri() -*/ -TQString TQUriDrag::uriToLocalFile(const char* uri) -{ - TQString file; - - if (!uri) - return file; - if (0==qstrnicmp(uri,"file:/",6)) // It is a local file uri - uri += 6; - else if (TQString(uri).find(":/") != -1) // It is a different scheme uri - return file; - - bool local = uri[0] != '/' || ( uri[0] != '\0' && uri[1] == '/' ); -#ifdef TQ_WS_X11 - // do we have a hostname? - if ( !local && uri[0] == '/' && uri[2] != '/' ) { - // then move the pointer to after the 'hostname/' part of the uri - const char* hostname_end = strchr( uri+1, '/' ); - if ( hostname_end != NULL ) { - char hostname[ 257 ]; - if ( gethostname( hostname, 255 ) == 0 ) { - hostname[ 256 ] = '\0'; - if ( tqstrncmp( uri+1, hostname, hostname_end - ( uri+1 )) == 0 ) { - uri = hostname_end + 1; // point after the slash - local = TRUE; - } - } - } - } -#endif - if ( local ) { - file = uriToUnicodeUri(uri); - if ( uri[1] == '/' ) { - file.remove((uint)0,1); - } else { - file.insert(0,'/'); - } -#ifdef TQ_WS_WIN - if ( file.length() > 2 && file[0] == '/' && file[2] == '|' ) { - file[2] = ':'; - file.remove(0,1); - } else if (file.length() > 2 && file[0] == '/' && file[1].isLetter() && file[2] == ':') { - file.remove(0, 1); - } - // Leave slash as slashes. -#endif - } -#ifdef TQ_WS_WIN - else { - file = uriToUnicodeUri(uri); - // convert to network path - file.insert(1, '/'); // leave as forward slashes - } -#endif - - return file; -} - -/*! - Decodes URIs from the mime source event \a e, converts them to - local files if they refer to local files, and places them in \a l - (which is first cleared). - - Returns TRUE if \e contained a valid list of URIs; otherwise - returns FALSE. The list will be empty if no URIs were local files. -*/ -bool TQUriDrag::decodeLocalFiles( const TQMimeSource* e, TQStringList& l ) -{ - TQStrList u; - if ( !decode( e, u ) ) - return FALSE; - - l.clear(); - for (const char* s=u.first(); s; s=u.next()) { - TQString lf = uriToLocalFile(s); - if ( !lf.isNull() ) - l.append( lf ); - } - return TRUE; -} - -/*! - Decodes URIs from the mime source event \a e, converts them to - Unicode URIs (only useful for displaying to humans), placing them - in \a l (which is first cleared). - - Returns TRUE if \e contained a valid list of URIs; otherwise - returns FALSE. -*/ -bool TQUriDrag::decodeToUnicodeUris( const TQMimeSource* e, TQStringList& l ) -{ - TQStrList u; - if ( !decode( e, u ) ) - return FALSE; - - l.clear(); - for (const char* s=u.first(); s; s=u.next()) - l.append( uriToUnicodeUri(s) ); - - return TRUE; -} - - -#ifndef TQT_NO_DRAGANDDROP -/*! - If the source of the drag operation is a widget in this - application, this function returns that source, otherwise it - returns 0. The source of the operation is the first parameter to - drag object subclasses. - - This is useful if your widget needs special behavior when dragging - to itself, etc. - - See TQDragObject::TQDragObject() and subclasses. -*/ -TQWidget* TQDropEvent::source() const -{ - return qt_dnd_manager ? qt_dnd_manager->dragSource : 0; -} -#endif - -/*! - \class TQColorDrag tqdragobject.h - - \brief The TQColorDrag class provides a drag and drop object for - transferring colors. - - \ingroup draganddrop - - This class provides a drag object which can be used to transfer data - about colors for drag and drop and in the clipboard. For example, it - is used in TQColorDialog. - - The color is set in the constructor but can be changed with - setColor(). - - For more information about drag and drop, see the TQDragObject class - and the \link dnd.html drag and drop documentation\endlink. -*/ - -/*! - Constructs a color drag object with the color \a col. Passes \a - dragsource and \a name to the TQStoredDrag constructor. -*/ - -TQColorDrag::TQColorDrag( const TQColor &col, TQWidget *dragsource, const char *name ) - : TQStoredDrag( "application/x-color", dragsource, name ) -{ - setColor( col ); -} - -/*! - Constructs a color drag object with a white color. Passes \a - dragsource and \a name to the TQStoredDrag constructor. -*/ - -TQColorDrag::TQColorDrag( TQWidget *dragsource, const char *name ) - : TQStoredDrag( "application/x-color", dragsource, name ) -{ - setColor( TQt::white ); -} - -/*! - Sets the color of the color drag to \a col. -*/ - -void TQColorDrag::setColor( const TQColor &col ) -{ - short r = (col.red() << 8) | col.red(); - short g = (col.green() << 8) | col.green(); - short b = (col.blue() << 8) | col.blue(); - - // make sure we transmit data in network order - r = htons(r); - g = htons(g); - b = htons(b); - - ushort rgba[4] = { - r, g, b, - 0xffff // Alpha not supported yet. - }; - TQByteArray data(sizeof(rgba)); - memcpy(data.data(), rgba, sizeof(rgba)); - setEncodedData(data); -} - -/*! - Returns TRUE if the color drag object can decode the mime source - \a e; otherwise returns FALSE. -*/ - -bool TQColorDrag::canDecode( TQMimeSource *e ) -{ - return e->provides( "application/x-color" ); -} - -/*! - Decodes the mime source \a e and sets the decoded values to \a - col. -*/ - -bool TQColorDrag::decode( TQMimeSource *e, TQColor &col ) -{ - TQByteArray data = e->tqencodedData("application/x-color"); - ushort rgba[4]; - if (data.size() != sizeof(rgba)) - return FALSE; - - memcpy(rgba, data.data(), sizeof(rgba)); - - short r = rgba[0]; - short g = rgba[1]; - short b = rgba[2]; - - // data is in network order - r = ntohs(r); - g = ntohs(g); - b = ntohs(b); - - r = (r >> 8) & 0xff; - g = (g >> 8) & 0xff; - b = (b >> 8) & 0xff; - - col.setRgb(r, g, b); - return TRUE; -} - -#endif // TQT_NO_MIME - -#endif // USE_QT4
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