Not all layers are shown using additional themes while pdf printing or raster export

[danceb]

We are using a QWC2 instance based on the qwc-docker using the qwc-services. Within the config.json the parameter "AllowAddingOtherThemes" is set to "true", so there is the possibility to load an initial theme and add other themes to the map so the layers of the other themes appear within the layer tree. When you use this map view for PDF printing or the raster export tool only the layers of the initial theme are printed/exported. All layers which are added in addition do not appear on the output pdf/raster. Are there any known issues related to this problem? I couldn't find one. I will appretiate any help or ideas, thanks!

(grey boxes because of sensitive data)

[manisandro]

You'll need to set printExternalLayers: true in the cfg block of the Print plugin, as layers from other themes are treated as external layers. Support for raster-exporting external layers OTOH is currently not implemented.

[danceb]

Ok, thanks for the quick response! I will close this issue now.

[mbernasocchi]

You'll need to set printExternalLayers: true in the cfg block of the Print plugin

hey @manisandro I've:

{
   "name": "Print",
   "cfg": {
      "inlinePrintOutput": false,
      "printExternalLayers": true
    }
},

in a deployment of mine and when adding a new theme to the main_theme and printing to PDF, the layers of the new theme are not printed.

the QGIS log also shows:

16:15:37 INFO Server[14]: DPI:300
16:15:37 INFO Server[14]: FORMAT:pdf
16:15:37 INFO Server[14]: LAYERS:orthofoto,layer_maintheme
16:15:37 INFO Server[14]: MAP:/io/data/demo.qgs

there is nowhere in the requests log a mention of layer_newtheme

do you have any pointers or did I miss something?

Grazie mille

[manisandro]

Hi @mbernasocchi , do you have

"qgisServerVersion": 3

in your config.json?

[mbernasocchi]

Hey @manisandro thanks for the super quick response.

no. is that top level in the JSON?

[manisandro]

yep, see https://github.com/qgis/qwc2-demo-app/blob/master/static/config.json#L28

[mbernasocchi]

did not help. still seeing only the "main" layers. server is 3.22.1

[manisandro]

Try stepping from here [1] into here [2] to see why those layers aren't added to the print request.

[1] https://github.com/qgis/qwc2/blob/74c5cb578ba64e4015fb4fbc542a2e5ac7207af9/plugins/Print.jsx#L120 [2] https://github.com/qgis/qwc2/blob/74c5cb578ba64e4015fb4fbc542a2e5ac7207af9/utils/LayerUtils.js#L653

[mbernasocchi]

@manisandro thanks for the help it was indeed a config.json issue. I had not noticed that config.json had changed location so I was editing an unused file :/ sorry for the noise