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Respond to PageUp/PageDown key presses #193

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Respond to PageUp/PageDown key presses #193

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17 changes: 17 additions & 0 deletions src/plotview.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -181,6 +181,23 @@ void PlotView::enableCursors(bool enabled)
viewport()->update();
}

void PlotView::keyPressEvent(QKeyEvent *keyEvent) {
int key = keyEvent->key();
if (key == Qt::Key_PageDown ||
key == Qt::Key_PageUp) {

int stride = width() - verticalScrollBar()->width();

horizontalScrollBar()->setValue(
horizontalScrollBar()->value() + stride * (key == Qt::Key_PageDown ? 1 : -1)
);
updateView(false);
return;
}

QGraphicsView::keyPressEvent(keyEvent);
}

bool PlotView::viewportEvent(QEvent *event) {
// Handle wheel events for zooming (before the parent's handler to stop normal scrolling)
if (event->type() == QEvent::Wheel) {
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1 change: 1 addition & 0 deletions src/plotview.h
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Expand Up @@ -59,6 +59,7 @@ public slots:
void resizeEvent(QResizeEvent * event) override;
void scrollContentsBy(int dx, int dy) override;
bool viewportEvent(QEvent *event) override;
void keyPressEvent(QKeyEvent *event) override;
void showEvent(QShowEvent *event) override;

private:
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