Map information tool: Information about the map properties

[dl3sdo]

The map information tool informs about the number of map objects, templates and undo-/redo-steps.
It informs about the number and names of map parts, symbols, colors, and fonts.
It shows for each color the symbol(s) using the color.
For each symbol in use the tools shows the used color(s) and the number of related objects.

[dl3sdo]

Any proposals for additional features?

[dg0yt]

For consistent naming, this should probably come as class MapInformationDialog, in map_information_dialog files.

[dl3sdo]

The PR needs to be adapted due to changes in #2158, thus the merge of #2158 shall be done first.

[dl3sdo]

Reminder to me: Add new .cpp file to code-check-wrapper.sh

[dl3sdo]

Now with possibility to export the report as text file.

[dl3sdo]

As #2158 is not scheduled for the upcoming release I propose to assess whether this PR could be merged before #2158. An update due to #2158 is straightforward.

[krticka]

Hi, I really appreciate the implementation of Map information tool. I have comments only on the information about the coordinate system, when the info "by EPSG code" is shown. I think this is rather insufficient information and EPSG value + Coordinate system name (zone) should be shown.

[dl3sdo]

@krticka: thank you for your feedback. I extended the information about the CRS. However, I don't know how I can easily derive the UTM zone from the EPSG code so I just added the zone or code for UTM, GK and EPSG:

[krticka]

@dl3sdo Thank you for this improvement. Every zone usually has its own EPSG code, so there is no need to bother with it. Information about coordinate system can be easily extended if the code will be active hyperlink to the web EPSG database, e.g. https://epsg.io/25832