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Only update CAD canvas item geometry when necessary
The call to setRect() in paint() handler was triggering canvas redraws
all the time, keeping one CPU core busy nearly all the time when
CAD dock was active.
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wonder-sk committed Sep 11, 2017
1 parent bb20047 commit 7c9105d
Showing 1 changed file with 2 additions and 1 deletion.
@@ -38,7 +38,8 @@ void QgsAdvancedDigitizingCanvasItem::paint( QPainter *painter )

QgsRectangle mapRect = mMapCanvas->extent();
setRect( mapRect );
if ( rect() != mapRect )
setRect( mapRect );

int nPoints = mAdvancedDigitizingDockWidget->pointsCount();
if ( !nPoints )

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@3nids 3nids commented on 7c9105d Sep 12, 2017

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backported to 2.18

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