void QcWaveform::mouseMoveEvent( QMouseEvent *ev )
{
if( !ev->buttons() ) return;
if( _dragAction == Navigate ) {
Qt::KeyboardModifiers mods = ev->modifiers();
if( mods & Qt::ShiftModifier ) {
double factor = pow( 2, (ev->pos().y() - _dragPoint.y()) * 0.008 );
// zoom to the initial zoom times the factor based on distance from initial position
zoomTo( _dragData2 * factor );
}
// scroll to the clicked frame minus the current mouse position in frames
// _fpp has been adjusted by zooming
scrollTo( _dragData - (ev->pos().x() * _fpp) );
}
else if( _dragAction == Select ) {
sf_count_t frame = qBound( 0, ev->pos().x(), width() ) * _fpp + _beg;
setSelection( _curSel, _dragFrame, frame );
update();
Q_EMIT( action() );
}
else if( _dragAction == MoveSelection ) {
double dpos = ev->pos().x() - _dragPoint.x();
Selection &s = _selections[_curSel];
s.start = _dragFrame + (dpos * _fpp);
s.start = qBound( _rangeBeg, s.start, _rangeEnd - s.size );
update();
Q_EMIT( action() );
}
else if( _dragAction == MoveCursor ) {
_cursorPos = qBound( 0, ev->pos().x(), width() ) * _fpp + _beg;
update();
Q_EMIT( metaAction() );
}
}
void QcWaveform::mousePressEvent( QMouseEvent *ev )
{
_dragAction = NoDragAction;
_dragPoint = ev->pos();
_dragFrame = ev->pos().x() * _fpp + _beg;
Qt::KeyboardModifiers mods = ev->modifiers();
Qt::MouseButton btn = ev->button();
#ifdef Q_OS_MAC
Qt::KeyboardModifier CTRL = Qt::MetaModifier;
#else
Qt::KeyboardModifier CTRL = Qt::ControlModifier;
#endif
if( btn == Qt::LeftButton ) {
if( (mods & Qt::ShiftModifier) && ( mods & CTRL ) ) {
_dragFrame = _selections[_curSel].start;
_dragAction = MoveSelection;
}
else if( mods & Qt::ShiftModifier ) {
_dragAction = Select;
const Selection &s = _selections[_curSel];
if( _dragFrame < s.start + (s.size*0.5) ) {
setSelectionStart( _curSel, _dragFrame );
_dragFrame = s.start + s.size;
}
else {
setSelectionEnd( _curSel, _dragFrame );
_dragFrame = s.start;
}
Q_EMIT( action() );
}
else {
if( !(mods & CTRL) ) {
_dragAction = Select;
_selections[_curSel].start = _dragFrame;
_selections[_curSel].size = 0;
update();
Q_EMIT( action() );
}
if( _cursorEditable ) {
_cursorPos = _dragFrame;
if( mods & CTRL ) _dragAction = MoveCursor;
update();
Q_EMIT( metaAction() );
}
}
}
else if( btn == Qt::RightButton ) {
_dragAction = Navigate;
_dragData = ev->pos().x() * _fpp + _beg;
_dragData2 = zoom();
}
}
//------------------------------------------------------------------------------
TextStream& operator<<(TextStream& stream, StrongType<const ObjectHandle&> value)
{
metaAction(value, [&](const MetaType* metaType, void* raw) {
if (metaType && raw)
{
metaType->streamOut(stream, raw);
}
else
{
stream.setState(std::ios_base::failbit);
}
});
return stream;
}
