_scale(1e-6),
_offset(0),
_v_offset(0),
+ _updating_scroll(false),
_show_cursors(false),
- _cursors(pair<Cursor, Cursor>(Cursor(*this, 0.0),
- Cursor(*this, 1.0))),
+ _cursors(*this),
_hover_point(-1, -1)
{
connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
connect(&_session, SIGNAL(data_updated()),
this, SLOT(data_updated()));
- connect(&_cursors.first, SIGNAL(time_changed()),
+ connect(&_cursors.first(), SIGNAL(time_changed()),
this, SLOT(marker_time_changed()));
- connect(&_cursors.second, SIGNAL(time_changed()),
+ connect(&_cursors.second(), SIGNAL(time_changed()),
this, SLOT(marker_time_changed()));
connect(_header, SIGNAL(signals_moved()),
_viewport->update();
}
-std::pair<Cursor, Cursor>& View::cursors()
+void View::centre_cursors()
+{
+ const double time_width = _scale * _viewport->width();
+ _cursors.first().set_time(_offset + time_width * 0.4);
+ _cursors.second().set_time(_offset + time_width * 0.6);
+ _ruler->update();
+ _viewport->update();
+}
+
+CursorPair& View::cursors()
{
return _cursors;
}
get_scroll_layout(length, offset);
length = max(length - areaSize.width(), 0.0);
- horizontalScrollBar()->setPageStep(areaSize.width());
+ horizontalScrollBar()->setPageStep(areaSize.width() / 2);
+
+ _updating_scroll = true;
if (length < MaxScrollValue) {
horizontalScrollBar()->setRange(0, length);
_offset * MaxScrollValue / (_scale * length));
}
+ _updating_scroll = false;
+
// Set the vertical scrollbar
verticalScrollBar()->setPageStep(areaSize.height());
verticalScrollBar()->setRange(0,
void View::h_scroll_value_changed(int value)
{
+ if (_updating_scroll)
+ return;
+
const int range = horizontalScrollBar()->maximum();
if (range < MaxScrollValue)
_offset = _scale * value;