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[quick] do not refresh map on click

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Whenever user would click on the map (e.g. to identify a feature),
the freeze and subsequent unfreeze would force map refresh even though
it is not needed. A new internal flag is introduced to avoid
the unnecessary map refresh in cases when map has not been moved nor zoomed.
This commit is contained in:
Martin Dobias 2019-02-21 22:13:11 +01:00
parent 0a0d2e995f
commit 057b225dae
2 changed files with 9 additions and 1 deletions
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9
src/quickgui/qgsquickmapcanvasmap.cpp
View File

@ -67,6 +67,7 @@ void QgsQuickMapCanvasMap::zoom( QPointF center, qreal scale )
// same as zoomWithCenter (no coordinate transformations are needed)
extent.scale( scale, &newCenter );
mMapSettings->setExtent( extent );
mNeedsRefresh = true;
}
void QgsQuickMapCanvasMap::pan( QPointF oldPos, QPointF newPos )
@ -86,6 +87,7 @@ void QgsQuickMapCanvasMap::pan( QPointF oldPos, QPointF newPos )
extent.setYMinimum( extent.yMinimum() + dy );
mMapSettings->setExtent( extent );
mNeedsRefresh = true;
}
void QgsQuickMapCanvasMap::refreshMap()
@ -257,8 +259,13 @@ void QgsQuickMapCanvasMap::setFreeze( bool freeze )
mFreeze = freeze;
if ( !mFreeze )
if ( !mFreeze && mNeedsRefresh )
{
refresh();
}
// we are freezing or unfreezing - either way we can reset "needs refresh"
mNeedsRefresh = false;
emit freezeChanged();
}

1
src/quickgui/qgsquickmapcanvasmap.h
View File

@ -196,6 +196,7 @@ class QUICK_EXPORT QgsQuickMapCanvasMap : public QQuickItem
QTimer mRefreshTimer;
bool mDirty = false;
bool mFreeze = false;
bool mNeedsRefresh = false; //!< Whether refresh is needed after unfreezing
QList<QMetaObject::Connection> mLayerConnections;
QTimer mMapUpdateTimer;
bool mIncrementalRendering = false;