New symbology: change symbols size with scale

[lutra]

Add (with a checkbox?) the possibility have markers size to change depending on scale (when size is defined in map units). More in general this should work for every symbology element where a size can be defined (line width, etc.).

Add also the option to have the size defined by the value of a field in the vector (shapefile/postgis/spatialite) table of attributes.

[lutra]

Markeline symbols (fontmarker, simplemarker and svgmarker) are not resizing accordingly with the scale, when map units are choosen. Also not resizing are intervals and offsets.

[wonder]

Added in r13389 (together with data-defined rotation)

[lutra]

Hi Martin, markelines symbols still are not resizing when unit is map units, plus it seems that if zoom in enough the markelines symbols go wild. See attached images. The markerline red points are supposed to be regularly above the line...

[wonder]

Markerline seems to work fine for me. Please could you attach the test data and steps how to reproduce it? Thanks, Martin

[lutra]

Hi Martin, just compiled the latest code on Ubuntu 10.04 and I still don't see any change. I'll send to you an email with screenshots because are too heavy to be attached here.

[wonder]

MarkerLine? size with map units fixed in r13421.