using std::abs;
using std::back_inserter;
using std::copy;
+using std::dynamic_pointer_cast;
using std::max;
using std::min;
using std::none_of;
Viewport::Viewport(View &parent) :
ViewWidget(parent),
- drag_offset_(numeric_limits<double>::signaling_NaN()),
pinch_zoom_active_(false)
{
setAutoFillBackground(true);
return nullptr;
}
+void Viewport::item_hover(const shared_ptr<ViewItem> &item)
+{
+ if (item)
+ setCursor(dynamic_pointer_cast<RowItem>(item) ?
+ Qt::SizeVerCursor : Qt::SizeHorCursor);
+ else
+ unsetCursor();
+}
+
void Viewport::drag()
{
drag_offset_ = view_.offset();
void Viewport::drag_by(const QPoint &delta)
{
- if (isnan(drag_offset_))
+ if (drag_offset_ == boost::none)
return;
- view_.set_scale_offset(view_.scale(), drag_offset_ -
- delta.x() * view_.scale());
+ view_.set_scale_offset(view_.scale(),
+ (*drag_offset_ - delta.x() * view_.scale()));
}
void Viewport::drag_release()
{
- drag_offset_ = numeric_limits<double>::signaling_NaN();
+ drag_offset_ = boost::none;
}
vector< shared_ptr<ViewItem> > Viewport::items()
if (!pinch_zoom_active_ ||
(event->touchPointStates() & Qt::TouchPointPressed)) {
- pinch_offset0_ = view_.offset() + view_.scale() * touchPoint0.pos().x();
- pinch_offset1_ = view_.offset() + view_.scale() * touchPoint1.pos().x();
+ pinch_offset0_ = (view_.offset() + view_.scale() * touchPoint0.pos().x()).convert_to<double>();
+ pinch_offset1_ = (view_.offset() + view_.scale() * touchPoint1.pos().x()).convert_to<double>();
pinch_zoom_active_ = true;
}
for (const shared_ptr<RowItem> r : row_items)
r->paint_mid(p, pp);
+ p.setRenderHint(QPainter::Antialiasing, false);
+
for (const shared_ptr<RowItem> r : row_items)
r->paint_fore(p, pp);
for (const shared_ptr<TimeItem> t : time_items)
view_.zoom(-2.0, event->x());
}
-void Viewport::wheelEvent(QWheelEvent *event)
+void Viewport::wheelEvent(QWheelEvent *e)
{
- assert(event);
-
- 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) {
+ assert(e);
+
+ if (e->orientation() == Qt::Vertical)
+ {
+ if (e->modifiers() & Qt::ControlModifier) {
+ // Vertical scrolling with the control key pressed
+ // is intrepretted as vertical scrolling
+ view_.set_v_offset(-view_.owner_visual_v_offset() -
+ (e->delta() * height()) / (8 * 120));
+ } else {
+ // Vertical scrolling is interpreted as zooming in/out
+ view_.zoom(e->delta() / 120, e->x());
+ }
+ }
+ else if (e->orientation() == Qt::Horizontal)
+ {
// Horizontal scrolling is interpreted as moving left/right
view_.set_scale_offset(view_.scale(),
- event->delta() * view_.scale()
- + view_.offset());
+ e->delta() * view_.scale() + view_.offset());
}
}