Bug report #2962

Double draw of layer when selecting and deselecting legend layer items

Added by Jeremy Palmer about 11 years ago. Updated over 10 years ago.

Status:Closed
Priority:Low
Assignee:sunilkcube -
Category:Map Canvas
Affected QGIS version: Regression?:No
Operating System:Windows Easy fix?:No
Pull Request or Patch supplied: Resolution:worksforme
Crashes QGIS or corrupts data: Copied to github as #:13022

Description

On WinXP SP3 using QGIS 1.5.0 I get two refreshes of the mapcanvas when selecting and deselecting layers.

On line 1541 of qgslegend.cpp there is a call to render the mapcanvas. However there is also a call to updateMapCanvasLayerSet() on line 1549. Should call to mMapCanvas->setRenderFlag( true ) on line 1541 be removed to stop refreshing the canvas twice?

History

#1 Updated by sunilkcube - over 10 years ago

  • Status changed from Open to In Progress

#2 Updated by sunilkcube - over 10 years ago

Hi Everyone,

Can anyone give suggestions ? The bug says layer is drawn twice. But the layer is drawn twice in the mapcanvas only when the overview panel is enabled, if the overview panel is disabled then enabling a layer will draw the layer in mapcanvas only once. So is this a bug really ?

#3 Updated by Jeremy Palmer over 10 years ago

Maybe the issue has been fix in trunk? I definitely didn't have the overview panel enabled when I was doing testing with 1.5.

#4 Updated by sunilkcube - over 10 years ago

  • Resolution set to invalid
  • Status changed from In Progress to Closed

#5 Updated by sunilkcube - over 10 years ago

  • Status changed from Closed to Feedback
  • Resolution deleted (invalid)

#6 Updated by sunilkcube - over 10 years ago

  • Status changed from Feedback to Closed
  • Resolution set to worksforme

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