[Qgis-developer] user-defined symbology defaults + project templates

[Etienne Tourigny]

On Mon, Jul 16, 2012 at 5:11 AM, Denis Rouzaud <denis.rouzaud at gmail.com> wrote:
> Hi,
>
> I think this is pretty useful!
> In parallel to templates, how about adding a button in the project settings,
> to make these settings as global default settings?

That's the idea of having a "Default template", when you create a new
project it loads that project file. I saw it as the simplest way to
treat user defaults, without having to mess too much with the
back-end.
However, I see now that it's probably not the best way to deal with
user defaults.

Should these user defaults be saved to user configuration (QGis.conf),
or a special "Default.qgs" file in the.qgis directory, or in a
user-defined template file?

How would one proceed than, if for example, global defaults are
overridden by the user, and a specific template is loaded? First load
the global defaults, then the user defaults, then the specific
template?

cheers
Etienne

>
> Greetings,
>
> Denis
>
>
> On 07/14/2012 11:10 PM, Etienne Tourigny wrote:
>
> Hi all,
>
> There are 2 interrelated topics that I have been thinking about and
> have come up with a solution, and I would like to get other's feedback
> before proceeding further.
>
> 1) Default symbol styles are not user configurable - for example new
> polygons are always filled with a random color, new point symbols are
> always small red dots, etc.
>
> I see 2 ways to change this - either global or project based. I think
> project based is better because defaults in a given project are
> probably not best for all projects.
>
> So I have implemented the interface and back-end to select default
> symbology (point, line, polygon) and color ramps for a project, and
> all new symbols have identical properties.
> See attached screenshot for an idea. Should probably also add options
> for rasters (i.e. what's already in the prefs, plus default renderer
> style).
>
> 2) New project defaults may not be ideal for all users - see
> background discussion below which deals with default composer
> templates.
>
> A solution to this is to have a default project (template) which is
> loaded when a new project is created. My solution allows to select the
> default project template and also adds a UI to load a "blank" project.
> I realize this may cause some problems, but it's nicer than to have to
> manually load a project "template" after creating a new project (or
> opening qgis for the first time).
>
> This, combined with the symbology defaults, means that a user can
> define his personal symbology defaults and have them always loaded
> when a new project is created.
>
> Any ideas/comments?
>
> Etienne
>
> Background discussion:
> http://lists.osgeo.org/pipermail/qgis-user/2012-June/017443.html
>
> My branch which implements solutions for these 2 issues:
> https://github.com/etiennesky/Quantum-GIS/tree/symbology-default
>
>
>
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