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Fix endless sync loop in Bars3D 

Floor was updated in each sync, triggering some dirty flags
being set. Update floor only if something affecting it changes.

Pick-to: 6.9
Fixes: QTBUG-136174
Change-Id: I172a8b443fd6d65f9cac3390071329f95a731f47
Reviewed-by: Sakaria Pouke <sakaria.pouke@qt.io>
Reviewed-by: Kwanghyo Park <kwanghyo.park@qt.io>
(cherry picked from commit f62322d262)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Tomi Korpipaa 2025-07-11 09:47:26 +03:00 committed by Qt Cherry-pick Bot
parent aadd8fd9e7
commit 7a25a45ced
2 changed files with 19 additions and 7 deletions
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23
src/graphs3d/qml/qquickgraphsbars.cpp
View File

@ -956,6 +956,7 @@ void QQuickGraphsBars::componentComplete()
m_floorBackground->setParentItem(m_floorBackgroundRotation);
m_floorBackground->setSource(floorUrl);
m_floorBackground->setPickable(false);
setFloorGridInRange(true);
setVerticalSegmentLine(false);
@ -1007,13 +1008,24 @@ void QQuickGraphsBars::synchData()
QQuickGraphsItem::synchData();
// Draw floor
if (m_selectedBarPos.isNull())
itemLabel()->setVisible(false);
//margin for a line to be fully visible on the edge in the grid shader
// Draw floor
if (m_changeTracker.floorChanged) {
updateFloor();
m_changeTracker.floorChanged = false;
}
qCDebug(lcGraphs3D, "%s end syncing", qUtf8Printable(QLatin1String(__FUNCTION__)));
}
void QQuickGraphsBars::updateFloor()
{
// Margin for a line to be fully visible on the edge in the grid shader
const float halfLineWidth = 50.0;
const float gridTextureSize = 4096.0;
const float gridMargin = halfLineWidth / gridTextureSize;
m_floorBackground->setPickable(false);
auto min = qMin(scaleWithBackground().x(), scaleWithBackground().z());
m_floorBackgroundScale->setScale(QVector3D(scaleWithBackground().x() + gridMargin,
min * gridOffset(),
@ -1035,10 +1047,6 @@ void QQuickGraphsBars::synchData()
bgMatFloor = static_cast<QQuick3DCustomMaterial *>(bbRef.at(0));
materialsRefF.append(bgMatFloor);
}
if (m_selectedBarPos.isNull())
itemLabel()->setVisible(false);
qCDebug(lcGraphs3D, "%s end syncing", qUtf8Printable(QLatin1String(__FUNCTION__)));
}
void QQuickGraphsBars::updateParameters()
@ -1198,6 +1206,7 @@ void QQuickGraphsBars::calculateSceneScalingFactors()
setScaleWithBackground(scale);
setBackgroundScaleMargin({m_hBackgroundMargin, m_vBackgroundMargin, m_hBackgroundMargin});
setScale(scale);
m_changeTracker.floorChanged = true;
}
void QQuickGraphsBars::calculateHeightAdjustment()

3
src/graphs3d/qml/qquickgraphsbars_p.h
View File

@ -35,6 +35,7 @@ struct Bars3DChangeBitField
bool floorLevelChanged : 1;
bool barSeriesMarginChanged : 1;
bool axisRangeChanged : 1;
bool floorChanged : 1;
Bars3DChangeBitField()
: multiSeriesScalingChanged(true)
@ -45,6 +46,7 @@ struct Bars3DChangeBitField
, floorLevelChanged(false)
, barSeriesMarginChanged(false)
, axisRangeChanged(false)
, floorChanged(true)
{}
};
@ -161,6 +163,7 @@ public:
protected:
void componentComplete() override;
void synchData() override;
void updateFloor();
void updateParameters();
void updateFloorLevel(float level);
void updateGraph() override;