ControllerRackView now uses a layout to organize the ControllerViews.
The ControllerViews in turn use layouts to organize their widgets
(labels and push button). ControllerView now inherits from QFrame
instead of QWidget. The (static) background image for controllers was
deleted because the ControllerView can now be resized dynamically.
Song: Added specific signals for added and removed controllers. Also
removed a TODO by putting the functionality to remove all controllers in
a method (removeAllControllers).
Deleted Controllers now don't unregister from Song during deletion. This
has to be done by the client (Hollywood principle - "Don't call us, we
call you.").
TODO: For some strange reason I cannot programmatically resize the
controller rack to make it fit the controllers on my screen.
LMMS now properly builds and runs with Qt5. Various deprecated functions
had to be replaced like QString::toAscii()/fromAscii(). Also occurences
of FALSE/TRUE have been replaced with false/true.
LmmsStyle now derives from QProxyStyle and sets a style instance as base
style (Plastique for Qt4, Fusion for Qt5).
MOC files are not included anymore but added as regular source files.
What's missing is support for embedding VST plugins into a subwindow
inside LMMS on Linux/X11 due to missing QX11EmbedContainer class in Qt5.
Build instructions can be found in INSTALL.Qt5
Minimum version requirement for Qt4 has been raised to 4.6.0 for best
API compatibility between Qt4 and Qt5.
Most files and most of the core classes and their methods have been
renamed to match new coding style conventions:
391 files changed, 25400 insertions(+), 25598 deletions(-)
Furthermore splitted some files where model and view classes were
declared or implemented together in the same file.
Should be tested thoroughly as I might have missed renaming some virtual
methods or SIGNAL/SLOT parameters.
(cherry picked from commit 8c9a9dd14c)
