"Field" Support for Print Composer

[neumann]

It would be useful to have "field" support in the print composer. Fields are variables and would be part of text labels in the print composer. The field value/content would be replaced when printing/previewing the map layout. Fields are common in text-processing.

Potential candidates for fields are:

• current date, proposed fieldname: currentDate

• current username (on an operating system level), proposed fieldname: currentUser

• current project title, proposed fieldname: currentProjectTitle

• current projection, proposed fieldname: currentProjection

• current map units, proposed fieldname: currentMapUnits

Are there more useful field names in this context?

There would have to be delimiters who separate fieldnames from regular text, potential formats:

<fieldName>

$fieldName$

§fieldName§

[neumann]

parts of it (currenDate) is already implemented in print composer. This was also the most urgent one of the proposed fields.

I still think that other fields should be added later on, but it is ok to move this to 1.6