[Torch5-devel] Lua QT

[Ronan C. <ro...@co...>]

Hey

[I]  A lot of stuff concerning QT has been added in the CVS.  
Everything has been written by Leon Bottou. This allow to make easy  
(and powerful) graphics/GUI directly from Lua. Several packages have  
been written for that purpose:

* qt: general utilities for interfacing Variants/Object/Classes from  
QT. Also functions for dealing with signals & slots.
* qttorch: able to convert tensors to/from QT images
* qtuiloader: can load QT GUI "ui" files (for e.g. written by the QT  
designer)
* qtwidget: interface to QT widgets

This packages are available if you run "qlua" (a variant of the "lua"  
program which knows about these packages) instead of "lua".

Another Torch package has been created:
* graphics: graphics drawing primitives interfaced to Cairo or QT. QT  
interface is used if QT is installed.

CMake detects if you have QT 4.3 or higher installed, in which case  
it compiles these modules.

Because of several annoying bugs in CMake, the minimum version  
required for CMake are now:
- 2.6.0 under Windows (native & Cygwin) [Cygwin now contains this  
version, and under native Windows platform you can also (re)-install  
the easy installer)
- 2.4.8 under MacOS X (update your MacPorts, or re-install with the  
easy Mac installer)
- 2.4.7 under Linux

The website has been updated accordingly, but more doc is coming soon.

Please, let me know if you experience any problem.

[II] Due to several complaints of people who did not installed  
fontconfig & freetype2 under Linux systems (and which got a  
compilation error because Cairo needs those to be compiled), the  
compilation of Cairo is not attempted under Linux if those packages  
are not installed.

Ronan.