Axonometric grid rotated

[prkos]

The 0 angle in axonometric grid isn't perfectly horizontal and 90 angle isn't perfectly vertical.

When I pull out a horizontal guide the angle value is automatically changed to 1.
If I have the 90 angle, vertical guide sets it to 89.

Tested on 9425 and 0.47.

[su_v (suv-lp)]

not reproduced with Inkscape 0.47 and 0.47+devel r9435 on OS X 10.5.8 using
- default (new) preferences file
- default A4 template (Inkscape ui language: System default / en_US.UTF-8)
- new default axonometric grid (Document Properties)

[su_v (suv-lp)]

sorry - I missed the important step:
> The 0 angle in axonometric grid isn't perfectly horizontal
> and 90 angle isn't perfectly vertical.

reproduced with Inkscape 0.47 and 0.47+devel r9433 on OS X 10.5.8

[Johan Engelen (johanengelen)]

90 degree angle would result in impossibly many grid lines (just see what setting it to 80 looks like), but indeed 0 degree should work and bothered me too. It was disabled in the code because it caused troubles/crashes. I just fixed this. r11830

[su_v (suv-lp)]

The fix (or the cleanup afterwards) apparently breaks building on linux (e.g. Ubuntu build bots) and on OS X:

Error from failed Ubuntu Quantal build [1]:

In file included from ./ui/widget/labelled.h:14:0,
                 from ./ui/widget/scalar.h:15,
                 from ./ui/widget/registered-widget.h:15,
                 from display/canvas-axonomgrid.cpp:20:
/usr/include/gtkmm-2.4/gtkmm/box.h:105:1: error: expected class-name before '{' token
/usr/include/gtkmm-2.4/gtkmm/box.h:112:10: error: '_GtkBoxChild' does not name a type
/usr/include/gtkmm-2.4/gtkmm/box.h:114:16: error: '_GtkBoxChild' does not name a type
/usr/include/gtkmm-2.4/gtkmm/box.h: In member function 'guint16 Gtk::Box_Helpers::Child::get_padding() const':
/usr/include/gtkmm-2.4/gtkmm/box.h:118:55: error: 'gobj' was not declared in this scope
/usr/include/gtkmm-2.4/gtkmm/box.h: In member function 'bool Gtk::Box_Helpers::Child::get_expand() const':
/usr/include/gtkmm-2.4/gtkmm/box.h:119:55: error: 'gobj' was not declared in this scope
/usr/include/gtkmm-2.4/gtkmm/box.h: In member function 'bool Gtk::Box_Helpers::Child::get_fill() const':
/usr/include/gtkmm-2.4/gtkmm/box.h:120:55: error: 'gobj' was not declared in this scope
/usr/include/gtkmm-2.4/gtkmm/box.h: In member function 'bool Gtk::Box_Helpers::Child::get_pack() const':
/usr/include/gtkmm-2.4/gtkmm/box.h:121:55: error: 'gobj' was not declared in this scope
/usr/include/gtkmm-2.4/gtkmm/box.h: In member function 'GtkBox* Gtk::Box_Helpers::Child::parent()':
/usr/include/gtkmm-2.4/gtkmm/box.h:130:52: error: 'gobj' was not declared in this scope
make[4]: *** [display/canvas-axonomgrid.o] Error 1
make[4]: Leaving directory `/build/buildd/inkscape-trunk-0.48+devel+11832+32~quantal1/src'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/build/buildd/inkscape-trunk-0.48+devel+11832+32~quantal1/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/buildd/inkscape-trunk-0.48+devel+11832+32~quantal1'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/inkscape-trunk-0.48+devel+11832+32~quantal1'

[1] <https://launchpadlibrarian.net/121260324/buildlog_ubuntu-quantal-amd64.inkscape-trunk_1%3A0.48%2Bdevel%2B11832%2B32~quantal1_FAILEDTOBUILD.txt.gz>

[su_v (suv-lp)]

Build succeeds (on OS X, with gtkmm 2.24.2, Apple's llvm-gcc-4.2) after reverting the last two revisions for 'canvas-axonomgrid.cpp':
$ bzr revert -r 11830 src/display/canvas-axonomgrid.cpp

[su_v (suv-lp)]

Build failure has been fixed in r11833:
<http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/11833>

[Alex Valavanis (valavanisalex)]

Unfortunately, this kind of build error will probably keep cropping up for a while. It's because GTK+ and a few of the gtkmm headers don't play nicely together when the "GTK_DISABLE_DEPRECATED" flag is defined.

The solution is to ensure that the offending <gtkmm/*.h> headers are included *before* <gtk/gtk.h>.