[Qgis-developer] Rendering context in rules
a.neumann at carto.net
Mon Jul 21 03:07:37 PDT 2014
I wonder if we could introduce a "rendering context" for usage in
symbology and labeling with expressions. This would be similar to the
CSS media queries where you could have different styling for printing
and on-screen display.
A render context could be:
* Main map canvas
* regular printing
* atlas printing
* WMS server
you want to have different rules or different symbology and labels
depending on the rendering context. E.g. you want to use a different
styling for atlas serial printing than for the general display in the
main map canvas.
With such a rendering context we could have rules like follows:
CASE WHEN rendering_context = 'atlas serial printing' THEN ....
WHEN rendering_context = 'main map canvas' THEN ....
Is such a "rendering context" feasible to implement/introduce?
On could go even further and also introduce the screen width/height in a
rule and have different symbology for small screens compared to large
Thank you for your thoughts on this very rough proposal.
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