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viewer: respond to wheel events for moving and zooming

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This commit is contained in:
itsmattkc
2022-11-11 11:06:31 -08:00
parent 2cf0b4aa8a
commit f6cbcf8ef9
5 changed files with 75 additions and 8 deletions
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app/widget/handmovableview/handmovableview.cpp
+7 -2
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@@ -150,16 +150,21 @@ const HandMovableView::DragMode &HandMovableView::GetDefaultDragMode() const
return default_drag_mode_;
}
bool HandMovableView::WheelEventIsAZoomEvent(QWheelEvent *event) const
bool HandMovableView::WheelEventIsAZoomEvent(QWheelEvent *event)
{
return (static_cast<bool>(event->modifiers() & Qt::ControlModifier) == !OLIVE_CONFIG("ScrollZooms").toBool());
}
qreal HandMovableView::GetScrollZoomMultiplier(QWheelEvent *event)
{
return 1.0 + (static_cast<qreal>(event->angleDelta().x() + event->angleDelta().y()) * 0.001);
}
void HandMovableView::wheelEvent(QWheelEvent *event)
{
if (WheelEventIsAZoomEvent(event)) {
if (!event->angleDelta().isNull()) {
qreal multiplier = 1.0 + (static_cast<qreal>(event->angleDelta().x() + event->angleDelta().y()) * 0.001);
qreal multiplier = GetScrollZoomMultiplier(event);
QPointF cursor_pos;
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)