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Fixing MacOS only GUI adjustment relying on QWheelEvent->delta() which was removed in Qt6. Some simplification was possible but no test due to lack of OS.

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Discovered due to new CI.
This commit is contained in:
Andre Rummler
2026-08-11 23:58:30 +02:00
parent a4d23fe312
commit d2a921ea80
1 changed files with 16 additions and 16 deletions
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sources/projectview.h
+16 -16
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@@ -35,28 +35,28 @@ public:
: QTabWidget(parent)
{}
double temp_index = 0;
void wheelEvent(QWheelEvent *event) override
{
int index = currentIndex();
double delta = 0;
double scale_factor = 0.005; // Decrease or increase speed of mouse wheel (0.04 = decrease)
if (event->modifiers() & Qt::ControlModifier) {
if (index != -1) {
delta = event->delta() * scale_factor; // Read and scale the scroll value
if (delta > 0 && (temp_index > -1)) temp_index = temp_index - abs(delta);
if (delta < 0 && (temp_index < count())) temp_index = temp_index + abs(delta);
// Only intercept if Ctrl is held down
if (event->modifiers() & Qt::ControlModifier) {
int index = currentIndex();
if (index != -1) {
// angleDelta().y() is usually 120 per click.
// Dividing by 120 gives you exactly +1 (scroll up) or -1 (scroll down)
int steps = event->angleDelta().y() / 120;
index = int (temp_index);
qDebug() << "index" << index << "temp_index" << temp_index << " " << event->delta() << delta;
if (steps != 0) {
int newIndex = index - steps;
if (index >= 0 && index < count())
setCurrentIndex(index);
// qDebug() << currentIndex();
if (newIndex >= 0 && newIndex < count())
setCurrentIndex(newIndex);
}
}
event->accept(); // Mark event handled so parent widgets don't process it
} else {
// Allow the default QTabWidget wheel behavior to process if Ctrl isn't held
QTabWidget::wheelEvent(event);
}
}
};
#endif