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//=============================================================================
// MusE
// Linux Music Editor
// $Id:$
//
// Copyright (C) 2002-2006 by Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//=============================================================================
#include "partdrag.h"
#include "al/xml.h"
#include "part.h"
const char MidiPartDrag::type[] = "application/muse/part/midi";
const char AudioPartDrag::type[] = "application/muse/part/audio";
const char WavUriDrag::type[] = "text/uri-list";
//---------------------------------------------------------
// MidiPartDrag
//---------------------------------------------------------
MidiPartDrag::MidiPartDrag(Part* part, QWidget* src)
: QDrag(src)
{
QBuffer buffer;
buffer.open(QIODevice::WriteOnly);
AL::Xml xml(&buffer);
part->write(xml);
buffer.close();
QMimeData* mimeData = new QMimeData;
mimeData->setData(type, buffer.buffer());
setMimeData(mimeData);
}
//---------------------------------------------------------
// canDecode
//---------------------------------------------------------
bool MidiPartDrag::canDecode(const QMimeData* s)
{
return s->hasFormat(type);
}
//---------------------------------------------------------
// decode
//---------------------------------------------------------
bool MidiPartDrag::decode(const QMimeData* s, Part*& p)
{
p = 0;
QDomDocument doc;
int line, column;
QString err;
if (!doc.setContent(s->data(type), false, &err, &line, &column)) {
QString col, ln, error;
col.setNum(column);
ln.setNum(line);
error = err + "\n at line: " + ln + " col: " + col;
printf("error parsing part: %s\n", error.toLatin1().data());
return false;
}
for (QDomNode node = doc.documentElement(); !node.isNull(); node = node.nextSibling()) {
QDomElement e = node.toElement();
if (e.isNull())
continue;
if (e.tagName() == "part") {
p = new Part(0);
p->ref();
p->read(node, true);
}
else
printf("MusE: %s not supported\n", e.tagName().toLatin1().data());
}
return (p != 0);
}
//---------------------------------------------------------
// PartDrag
// does only transfer reference to part, this does
// not allow for transfers between different apps
// TODO: transfer content (xml representation)
//---------------------------------------------------------
AudioPartDrag::AudioPartDrag(Part* part, QWidget* src)
: QDrag(src)
{
QBuffer buffer;
buffer.open(QIODevice::WriteOnly);
Xml xml(&buffer);
part->write(xml);
buffer.close();
QMimeData* mimeData = new QMimeData;
mimeData->setData(type, buffer.buffer());
setMimeData(mimeData);
}
//---------------------------------------------------------
// canDecode
//---------------------------------------------------------
bool AudioPartDrag::canDecode(const QMimeData* s)
{
return s->hasFormat(type);
}
//---------------------------------------------------------
// decode
//---------------------------------------------------------
bool AudioPartDrag::decode(const QMimeData* s, Part*& p)
{
p = 0;
QDomDocument doc;
int line, column;
QString err;
if (!doc.setContent(s->data(type), false, &err, &line, &column)) {
QString col, ln, error;
col.setNum(column);
ln.setNum(line);
error = err + "\n at line: " + ln + " col: " + col;
printf("error parsing part: %s\n", error.toLatin1().data());
return false;
}
for (QDomNode node = doc.documentElement(); !node.isNull(); node = node.nextSibling()) {
QDomElement e = node.toElement();
if (e.isNull())
continue;
if (e.tagName() == "part") {
p = new Part(0);
p->ref();
p->read(node, false);
}
else
printf("MusE: %s not supported\n", e.tagName().toLatin1().data());
}
return (p != 0);
}
//---------------------------------------------------------
// WavUriDrag
//---------------------------------------------------------
WavUriDrag::WavUriDrag(const QString& s, QWidget* src)
: QDrag(src)
{
QByteArray a(s.toAscii());
QMimeData* mimeData = new QMimeData;
mimeData->setData(type, a);
setMimeData(mimeData);
}
//---------------------------------------------------------
// canDecode
//---------------------------------------------------------
bool WavUriDrag::canDecode(const QMimeData* s)
{
if (!s->hasFormat(type))
return false;
QByteArray data = s->data(type);
QUrl url(data);
if (url.scheme() != "file")
return false;
QFileInfo fi(url.toLocalFile().trimmed());
if (!fi.exists()) {
printf("drag file <%s> does not exist\n", fi.filePath().toLatin1().data());
return false;
}
if (fi.suffix() != "wav") {
printf("drag file <%s> has no wav suffix\n", fi.filePath().toLatin1().data());
return false;
}
return true;
}
//---------------------------------------------------------
// decode
//---------------------------------------------------------
bool WavUriDrag::decode(const QMimeData* s, QString* uri)
{
QByteArray data = s->data(type);
QUrl url(data);
*uri = url.toLocalFile().trimmed();
return true;
}
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