Bug report #1056

Transparent Zoom box goes funny if cursor not in top left 100,100 pixels

Added by hamish - almost 16 years ago. Updated over 14 years ago.

Assignee:nobody -
Category:Map Canvas
Affected QGIS version: Regression?:No
Operating System:OS X Easy fix?:No
Pull Request or Patch supplied: Resolution:worksforme
Crashes QGIS or corrupts data: Copied to github as #:11116



I just installed 0.10.0 binaries on Mac 10.4.11 (T's all-in-one) and Windows XP (Marco's), I see a similar rendering problem on both using the zoom tools. It is especially apparent on the Mac.

Purely cosmetic while you are setting a new zoom level, everything is fine upon map redraw.

Load a shapefile, click the zoom-in button, set your first mark then as you drag for the second corner you should see a semi-transparent filled + outlined box following the mouse. If the mouse is not in the top 100x100 (or so) pixels from the top left of the map canvas the semi-transparent part of the box is broken.

On Mac it makes the box a solid+opaque grey, with anything that the box passed over erased to white until you release the mouse button. If you drag the 2nd corner of the box into the top left you correctly see the semi-transparent map underneath, but it goes back to grey once you move away from there.

On the PC the zoom box leaves a stuttered trail of its outline behind, unless again you are in the top left 100x100 (or so) pixels of the map frame.


ps- milestone and version trac fields need a 0.10 option.


#1 Updated by Giovanni Manghi almost 15 years ago

Is this still true? I cannot replicate it (if I understand the problem) with qgis 1.2 from trunk under Ubuntu 9.04 and Win XP.

Please try a more recent version and report back.

#2 Updated by simonb - over 14 years ago

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

Testing with OS X 10.5.7 and Qgis 1.1.0-Pan (Unstable) installed from http://www.kyngchaos.com/files/software/unixport/Qgis-1.1.0-3-Leopard.dmg.

Works for me - no odd artifacts when click-drag creating a zoom box.

Also available in: Atom PDF