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https://invent.kde.org/system/dolphin
synced 2024-08-22 01:40:02 +00:00
Fix zooming for high resolution scroll wheels
BUG: 432671
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@ -931,6 +931,11 @@ bool DolphinView::eventFilter(QObject *watched, QEvent *event)
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}
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}
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break;
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case QEvent::KeyRelease:
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if (static_cast<QKeyEvent *>(event)->key() == Qt::Key_Control) {
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m_controlWheelAccumulatedDelta = 0;
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}
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break;
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case QEvent::FocusIn:
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if (watched == m_container) {
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setActive(true);
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@ -969,10 +974,16 @@ bool DolphinView::eventFilter(QObject *watched, QEvent *event)
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void DolphinView::wheelEvent(QWheelEvent *event)
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{
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if (event->modifiers().testFlag(Qt::ControlModifier)) {
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const QPoint numDegrees = event->angleDelta() / 8;
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const QPoint numSteps = numDegrees / 15;
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m_controlWheelAccumulatedDelta += event->angleDelta().y();
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if (m_controlWheelAccumulatedDelta <= -QWheelEvent::DefaultDeltasPerStep) {
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slotDecreaseZoom();
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m_controlWheelAccumulatedDelta += QWheelEvent::DefaultDeltasPerStep;
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} else if (m_controlWheelAccumulatedDelta >= QWheelEvent::DefaultDeltasPerStep) {
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slotIncreaseZoom();
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m_controlWheelAccumulatedDelta -= QWheelEvent::DefaultDeltasPerStep;
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}
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setZoomLevel(zoomLevel() + numSteps.y());
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event->accept();
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} else {
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event->ignore();
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@ -924,6 +924,10 @@ private:
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bool m_scrollToCurrentItem; // Used for marking we need to scroll to current item or not
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QPoint m_restoredContentsPosition;
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// Used for tracking the accumulated scroll amount (for zooming with high
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// resolution scroll wheels)
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int m_controlWheelAccumulatedDelta;
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QList<QUrl> m_selectedUrls; // Used for making the view to remember selections after F5
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bool m_clearSelectionBeforeSelectingNewItems;
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bool m_markFirstNewlySelectedItemAsCurrent;
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