Bug report #15795: Color Select in MacOS - QGIS Application - QGIS Issue Tracking

Bug report #15795

Color Select in MacOS

Added by Rhenriques Henriques over 7 years ago. Updated about 5 years ago.

Status:	Closed
Priority:	Normal
Assignee:	-
Category:	OsX UI
Affected QGIS version:	2.18.2	Regression?:	No
Operating System:	MacOS	Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:	no timely feedback
Crashes QGIS or corrupts data:	No	Copied to github as #:	23715

Description

If "Use native color choose dialogs" option is used in MacOS and QGIS 2.16 it's impossible to use QGIS after any color change. The dialog appears, the color is choosen but, after that, the "Properties" window gets blocked, a mouse click gives the "boing" sound and only a force quit QGIS can be done.
This also happens in the latest developer version for MacOS.

Cheers

History

#1 Updated by Rhenriques Henriques over 7 years ago

This behavior happens when the layer is categorized by any field. Double click any categorized feature from list -> use the fill color area to get the system color selection -> Change color by any mean, even using, for instance, the color picker. We are able to close the color selection dialog, the feature formatting but after, the properties window will hang and it's impossible to do anything else, only force quit QGIS.

Cheers

#2 Updated by Rhenriques Henriques over 7 years ago

In this latest compilation from William K. (2.18), it's impossible to use the MacOS standard color selection dialog. This is awful because the native QGIS color selector lacks the color picker pipette. The native MacOS color selector has this feature, which is very important if you only have a JPEG or TIFF scanned legend to get colors from.

#3 Updated by Rhenriques Henriques over 7 years ago

Still not possible to use the color pipette in this latest version of QGIS 2.18.2. It's a great feature, it's present in all previous versions using the system picker and it's now gone. The main reason it's because it's now impossible to use the system color picker. Any particular reason for this? It's very important to reconstruct color palettes from scanned maps for instance.

#4 Updated by Giovanni Manghi over 7 years ago

Affected QGIS version changed from 2.16.3 to 2.18.2
Category set to OsX UI
Priority changed from High to Severe/Regression

Rhenriques Henriques wrote:

Still not possible to use the color pipette in this latest version of QGIS 2.18.2. It's a great feature, it's present in all previous versions using the system picker and it's now gone. The main reason it's because it's now impossible to use the system color picker. Any particular reason for this? It's very important to reconstruct color palettes from scanned maps for instance.

as it seems a regression I will raise the priority,

#5 Updated by Giovanni Manghi about 7 years ago

Target version deleted (~~Future Release - High Priority~~)
Priority changed from Severe/Regression to Normal

Rhenriques Henriques wrote:

This behavior happens when the layer is categorized by any field. Double click any categorized feature from list -> use the fill color area to get the system color selection -> Change color by any mean, even using, for instance, the color picker. We are able to close the color selection dialog, the feature formatting but after, the properties window will hang and it's impossible to do anything else, only force quit QGIS.

Cheers

Hi,
I just tried on macOS 10.12 and QGIS 2.18.2 and I can't confirm this issue. Please leave feedback.

About the missing color picker it seems to me that has been raised several times and a ticket already exist:

#11632

http://osgeo-org.1560.x6.nabble.com/Opinions-on-quot-best-quot-implementation-of-color-picker-dialog-td5153693.html

https://nyalldawson.net/2014/09/whats-new-in-qgis-2-6-tons-of-colour-improvements/

now that we are on the road to QGIS3 it maybe the right moment to raise this matter again (or maybe as QGIS3 uses QT5 the problem will be easily solved).

#6 Updated by Giovanni Manghi about 7 years ago

Priority changed from Normal to High

#7 Updated by Rhenriques Henriques about 7 years ago

Hi Giovanni

Thank you so much for the priority change. This issue is not solved in 2.18.2. The system color picker seems to work in DEM files, after a single band pseudocolor with a color ramp applied, by double click into any legend color directly. In vector information, after a Categorized classification, it's impossible to use the color picker if we double-click any color. However, if we right-click over any color into the classification window and choose color change, the system picker is opened. This is the way I've found to avoid this problem into my classes. By choosing the system picker into the preferences it should always be shown as is.

#8 Updated by Giovanni Manghi about 7 years ago

Rhenriques Henriques wrote:

Hi Giovanni

Thank you so much for the priority change.

no problem! I will also try on my macbook tomorrow... but anyway... does this still freezes QGIS in your case? because if not this must be changed again to "normal". We are using "high" only for issues causing crashes/freezes and data corruption and "severe" for regressions. Maybe this is a regression? did the picker worked fine in the past in osx?