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/***************************************************************************
* Copyright (C) 2003 by Sébastien Laoût *
* slaout@linux62.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef NOTEDRAG_H
#define NOTEDRAG_H
#include <qstring.h>
#include <qdragobject.h>
#include <qdatastream.h>
#include <qpixmap.h>
#include <qvaluelist.h>
#include <kmultipledrag.h>
class QDataStream;
class Basket;
class Note;
class NoteSelection;
/** Dragging/Copying/Cutting Scenario:
* - User select some notes and cut them;
* - NoteDrag::toMultipleDrag() is called with a tree of the selected notes (see Basket::toSelectionTree()):
* - This method create a new KMultipleDrag object, create a stream,
* - And then browse all notes and call the virtual Note::serialize() with the stream as parameter for them to serialize theire content in the "native format".
* - This give the MIME type "application/x-basket-note" that will be used by the application to paste the notes exactly as they were.
* - Then the method try to set alterante formats for the dragged objects:
* - It call successively toText() for each notes and stack up the result so theire is ONE big text flavour to add to the KMultipleDrag object
* - It do the same with toHtml(), toImage() and toLink() to have those flavours as well, if possible...
* - If there is only ONE copied note, addAlternateDragObjects() is called on it, so that Unknown objects can be dragged "as is".
* - It's OK for the flavours. The method finally set the drag feedback pixmap by asking every selected notes to draw the content to a small pixmap.
* - The pixmaps are joined to one big pixmap (but it should not exceed a defined size) and a border is drawn on this image.
*
* Pasting/Dropping Scenario:
*
* @author Sébastien Laoût
*/
class NoteDrag
{
protected:
static void serializeNotes( NoteSelection *noteList, QDataStream &stream, bool cutting );
static void serializeText( NoteSelection *noteList, KMultipleDrag *multipleDrag );
static void serializeHtml( NoteSelection *noteList, KMultipleDrag *multipleDrag );
static void serializeImage( NoteSelection *noteList, KMultipleDrag *multipleDrag );
static void serializeLinks( NoteSelection *noteList, KMultipleDrag *multipleDrag, bool cutting );
static void setFeedbackPixmap( NoteSelection *noteList, KMultipleDrag *multipleDrag );
static Note* decodeHierarchy(QDataStream &stream, Basket *parent, bool moveFiles, bool moveNotes, Basket *originalBasket);
public:
static QPixmap feedbackPixmap(NoteSelection *noteList);
static QDragObject* dragObject(NoteSelection *noteList, bool cutting, QWidget *source = 0);
static bool canDecode(QMimeSource *source);
static Note* decode(QMimeSource *source, Basket *parent, bool moveFiles, bool moveNotes);
static Basket* basketOf(QMimeSource *source);
static QValueList<Note*> notesOf(QMimeSource *source);
static void createAndEmptyCuttingTmpFolder();
static const char *NOTE_MIME_STRING;
};
/** QTextDrag with capabilities to drop GNOME and Mozilla texts
* as well as UTF-16 texts even if it was supposed to be encoded
* with local encoding!
* @author Sébastien Laoût
*/
class ExtendedTextDrag : public QTextDrag
{
Q_OBJECT
public:
static bool decode(const QMimeSource *e, QString &str);
static bool decode(const QMimeSource *e, QString &str, QCString &subtype);
};
// Support KDE 3.3 and older PROTECTED KURLDrag::encodedData()!
#include <kurldrag.h>
class KURLDrag2 : public KURLDrag
{
Q_OBJECT
public:
KURLDrag2(const KURL::List &urls) : KURLDrag(urls) {}
QByteArray encodedData2(const char *mime) const
{
return encodedData(mime);
}
};
#endif // NOTEDRAG_H
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