int Viewport::get_total_height() const
{
int h = 0;
- BOOST_FOREACH(const shared_ptr<Signal> s,
- _view.session().get_signals()) {
+ const vector< shared_ptr<Signal> > sigs(
+ _view.session().get_signals());
+ BOOST_FOREACH(const shared_ptr<Signal> s, sigs) {
assert(s);
h = max(s->get_v_offset() + View::SignalHeight, h);
}
void Viewport::paintEvent(QPaintEvent *event)
{
- const vector< shared_ptr<Signal> > &sigs =
- _view.session().get_signals();
+ const vector< shared_ptr<Signal> > sigs(
+ _view.session().get_signals());
QPainter p(this);
p.setRenderHint(QPainter::Antialiasing);
{
assert(event);
- if(event->buttons() & Qt::LeftButton)
+ if (event->buttons() & Qt::LeftButton)
{
_view.set_scale_offset(_view.scale(),
_mouse_down_offset +
void Viewport::wheelEvent(QWheelEvent *event)
{
assert(event);
- _view.zoom(event->delta() / 120, event->x());
+
+ if (event->orientation() == Qt::Vertical) {
+ // Vertical scrolling is interpreted as zooming in/out
+ _view.zoom(event->delta() / 120, event->x());
+ } else if (event->orientation() == Qt::Horizontal) {
+ // Horizontal scrolling is interpreted as moving left/right
+ _view.set_scale_offset(_view.scale(),
+ event->delta() * _view.scale()
+ + _view.offset());
+ }
}
void Viewport::draw_cursors_background(QPainter &p)
{
- if(!_view.cursors_shown())
+ if (!_view.cursors_shown())
return;
p.setPen(Qt::NoPen);
void Viewport::draw_cursors_foreground(QPainter &p)
{
- if(!_view.cursors_shown())
+ if (!_view.cursors_shown())
return;
const QRect r = rect();