[Qgis-developer] Feature request #12667 and #13803

[gam17 at riseup.net]

Hi Christian,
for only #12667 you can use am experimental plugin called QAD (Quantum 
Aided Design).
code repository is here:
https://github.com/geosim/QAD

download zip from here:
https://github.com/geosim/QAD/archive/master.zip then unzip in
<home>/.qgis2/python/plugins then remove the "-master" suffix
(otherwise you'll have python invalid syntax during loading plugin
module) and restart QGIS.

During digitalization press F3 to toggle snap mode on/off and F8 to 
toggle orthomode on/off.
Note: QAD has its own snap options.

 From QAD Documentation:

OSNAP
The F3 key activates/deactivates the osnap mode.
To change the osnap mode:

- When a command ask for a point press CTRL + right mouse button to 
choose a different snap mode.

- When a command ask for a point type in the text window:
"NONE" = no snap
"END" = endpoints of each segment
"END_PL" = endpoint of the entire polyline
"MID" = midpoint
"CEN" = center (centroid)
"NOD" = point object
"QUA" = quadrant point
"INT" = intersection
"INS" = insertion point
"PER" = perpendicular point
"TAN" = tangent
"NEA" = closest point
"APP" = apparent intersection
"EXT" = Extension
"PAR" = Parallel
"INT_EXT" = intersection on extension
"PR" = progressive distance (may be followed by a number to set a 
progressive distance different from default)

- Run DSETTING command