[Qgis-developer] Infrastructure for plugin settings

Denis Rouzaud denis.rouzaud at gmail.com
Thu Sep 5 06:00:31 PDT 2013

I have made some publicity before for a library which handles plugin 

Basically, the idea is that it you create once the settings somewhere in 
your plugin and then it handles type validation, defaut values, etc. The 
most interesting part is that you have a SettingDialog class, which 
automatically read/write widgets if you name them accordingly to the 
settings (it handles several widgets for all the different types of 

This small lib is very time saving for the few plugins I have.

Maybe an idea would be to translate this to a QgsPluginSetting class 
which would then list all the settings to be edited in the main plugin 
setting window.



On 09/05/2013 02:47 PM, Etienne Tourigny wrote:
> I have implemented something like this some time ago, based on a gui 
> from QT - Settings Editor.
> I am not sure if I never commited it or if someone removed it.
> I will try to find the code and submit a pull request.
> Etienne
> On Thu, Sep 5, 2013 at 5:12 AM, Victor Olaya <volayaf at gmail.com 
> <mailto:volayaf at gmail.com>> wrote:
>     The idea is to have that common place for all settings. The bad thing
>     that I see (and some people have told me), is that it might be
>     difficult to find for a user that searches for a configuration panel
>     for a given plugin, since he might look for it in the menu of that
>     plugin. A solution to that would be to make it easy to call the
>     settigns dialog, but open in the tab (or panel, or whatever),
>     corresponding to a given plugin. So there would be a "plugin options"
>     menu, with all options, but a plugin author could add a shortcut to
>     that and add a "setting of my plugin" menu entry which would go
>     straight to those settings.
>     The thing is to avoid developers creating their own panels and dialogs
>     for settings, which is time consuming and each one looks differently.
>     I would suggest a design similar to the eclipse one, with a tree in
>     the left hand side where you have all plugins, and once you select
>     one, you see all its parameters in the right-hand side panel.
>     If anyone is interested, we can discuss this in the HF. It looks to me
>     like a nice thing to work on, and we can also adapt some existing
>     plugins to use it, once it is done.
>     cheers
>     Víctor
>     2013/9/5 Matthias Kuhn <matthias.kuhn at gmx.ch
>     <mailto:matthias.kuhn at gmx.ch>>:
>     > Hi,
>     >
>     > Other applications have unified setting centers like firefox
>     when you
>     > enter about:config in the URL bar. But this is in addition to the
>     > settings dialog(s) which is/are still offered. Are you thinking
>     about
>     > something like this? A simple config value editor, like regedit?
>     >
>     > Or is the aim of this project a unified config dialog, where plugins
>     > register their own tab (or list entry or whatsoever)? In this case,
>     > would it be a new dialog "Plugin Options" which would act as
>     container
>     > for all options? Or opening up the "Options" dialog for registering
>     > additional tabs? IMO the first one has the drawback of brandmarking
>     > plugins as 3rd-party, not fully integrated, while the second one has
>     > the drawback/risk of cluttering this dialog.
>     >
>     > Talking about this, I recently did a similar thing for the
>     vector layer
>     > properties (add the possibility to add a new tab for plugins. POC
>     > implemented in form of layer specific globe settings, not yet
>     merged)
>     >
>     > Cheers
>     > Matthias
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