Move the envelope and LFO graphs into their own classes.
Besides the improved code organization this step had to be done to be able to use layouts in `EnvelopeAndLfoView`. The class previously had fixed layouts mixed with custom rendering in the paint event. Mouse events are now also handled in both new classes instead of in `EnvelopeAndLfoView`.
## Layouts in EnvelopeAndLfoView
Use layouts to align the elements of the `EnvelopeAndLfoView`. This removes lots of hard-coded values. Add helper lambdas for the repeated creation of `Knob` and `PixmapButton` instances.
The spacing that is explicitly introduced between the envelope and LFO should be removed once there is a more open layout.
## Layouts for InstrumentSoundShapingView
Use layouts to align the elements of the `InstrumentSoundShapingView`.
## Info text improvements in LFO graph
Draw the info text at around 20% of the LFO graph's height. This prepares the dialog to be scaled later.
Write "1000 ms/LFO" instead of "ms/LFO: 1000" with a larger gap.
## Accessors for EnvelopeAndLfoParameters
Make the enum `LfoShape` in `EnvelopeAndLfoParameters` public so that it can be used without friend declarations. Add accessor methods for the model of the LFO.
## Other improvements
* Adjust include orders
* Variable initialization in headers
* Prevention of most vexing parses
This PR places all LMMS symbols into namespaces to eliminate any potential future name collisions between LMMS and third-party modules.
Also, this PR changes back `LmmsCore` to `Engine`, reverting c519921306 .
Co-authored-by: allejok96 <allejok96@gmail.com>
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)
