inline static bool isPenValid() {
if( !painter ) {
qcErrorMsg( QString("Usage of QPen is not allowed at this point!") );
return false;
}
return true;
}
static int mediate( VMGlobals *g, int i ) {
if( !globalPainter() ) {
qcErrorMsg( QString("Usage of QPen is not allowed at this point!") );
return errFailed;
}
PyrSlot *stack = g->sp - i + 1;
int ret = (*FN)( stack, i > 1 ? stack+1 : 0, g );
return ret;
}
void QcScrollArea::setWidget( QObjectProxy *proxy )
{
QWidget *w = qobject_cast<QWidget*>( proxy->object() );
if( !w ) {
qcErrorMsg( "QcScrollArea::setCanvas: given proxy does not contain a valid widget." );
return;
}
QScrollArea::setWidget( w );
setWidgetResizable( true );
}
void QcWaveform::load( const QString& filename )
{
qcDebugMsg( 1, "QcWaveform::load( filename )" );
SF_INFO new_info;
memset( &new_info, 0, sizeof(SF_INFO) );
SNDFILE *new_sf = sf_open( filename.toStdString().c_str(), SFM_READ, &new_info );
if( !new_sf ) {
qcErrorMsg(QString("Could not open soundfile: ") + filename);
return;
}
doLoad( new_sf, new_info, 0, new_info.frames );
}
// WARNING: QtCollider::lockLang() must be called before
void QtCollider::runLang (
PyrObjectHdr *receiver,
PyrSymbol *method,
const QList<QVariant> & args,
PyrSlot *result )
{
VMGlobals *g = gMainVMGlobals;
g->canCallOS = true;
++g->sp; SetObject(g->sp, receiver);
Q_FOREACH( QVariant var, args ) {
++g->sp;
if( !QtCollider::set( g->sp, var ) ) {
qcErrorMsg("Failed to write a slot when trying to run interpreter!");
SetNil( g->sp );
}
}
void QcWaveform::doLoad( SNDFILE *new_sf, const SF_INFO &new_info, sf_count_t beg, sf_count_t dur )
{
// set up soundfile to scale data in range [-1,1] to int range
// when reading floating point data as int
sf_command( new_sf, SFC_SET_SCALE_FLOAT_INT_READ, NULL, SF_TRUE );
// check beginning and duration validity
if( beg < 0 || dur < 1 || beg + dur > new_info.frames ) {
qcErrorMsg("Invalid beginning and/or duration.");
sf_close( new_sf );
return;
}
// cleanup previous state
// NOTE we have to delete SoundCacheStream before closing the soundfile, as it might be still
// loading it
// TODO: should SoundCacheStream open the soundfile on its own?
delete _cache;
if( sf ) sf_close( sf );
sf = new_sf;
sfInfo = new_info;
_beg = _rangeBeg = beg;
_dur = _rangeDur = dur;
_rangeEnd = _rangeBeg + _rangeDur;
updateFPP();
_cache = new SoundCacheStream();
connect( _cache, SIGNAL(loadProgress(int)),
this, SIGNAL(loadProgress(int)) );
connect( _cache, SIGNAL(loadProgress(int)),
this, SLOT(update()) );
connect( _cache, SIGNAL(loadingDone()), this, SIGNAL(loadingDone()) );
connect( _cache, SIGNAL(loadingDone()), this, SLOT(redraw()) );
_cache->load( sf, sfInfo, beg, dur, kMaxFramesPerCacheUnit, kMaxRawFrames );
redraw();
}
bool beginPainting( QPainter *p )
{
if( painter ) {
qcErrorMsg( QString("Painting already in progress!") );
return false;
}
painter = p;
painter->setRenderHint( QPainter::Antialiasing, true );
QColor black( 0,0,0 );
QPen pen( black );
pen.setCapStyle( Qt::FlatCap );
painter->setPen( pen );
painter->setBrush( black );
path = QPainterPath();
return true;
}
