Ardour seems to listen to the bounds of the plugin window, and will call
`onSize` on the plugin editor when move/resize events are sent to the X
window - even if the size of the window didn't really change. This can
result in an infinite resize loop, where calling `onSize` on the VST3
instance sends a resize event to the plugin window, and this event
causes Ardour to call `onSize` on the plugin view.
To get around this, the Linux ComponentPeer will no longer request a
bounds change from the window system if the requested bounds are the
same as the current bounds.
Previously, things like PopupMenus which were created in their own
windows were not being scaled correctly on HiDPI displays on Linux.
This patch forces the display scale to 1.0 in plugins, meaning that
the transform applied to the main plugin window is the sole source
of truth for component scaling in plugins.
Previously we were choosing a Visual and Colormap on initialisation of the X11 Display which could lead to bugs when opening a window with different visual and colour requirements. This commit makes 16, 24 and 32-bit visuals available and chooses the correct one when opening a window.
MIDI: Several ALSA Seq improvements
===================================
Many things were done in this patch (I couldn't really split in several
patches):
* Only one ALSA Sequencer client per application
* ALSA Sequencer client name is the application's name by default
* Fixed a bug when getDeivces() would return devices created by the
application itself
* Only ports created with createNewDevice() are allowed to be subscribed,
other ports (created by openDevice()) doesn't allow subscription
* AlsaPort is now handled by AlsaClient, basically having the proper
representation such as the ALSA Sequencer has.
Files: Fix default directory paths
==================================
Some information on:
* Linux LSB FHS:
http://www.linuxfoundation.org/collaborate/workgroups/lsb/fhs-30
* https://wiki.archlinux.org/index.php/Xdg_user_directories
Refactor Event loop to remove X11 dependency
============================================
The goal of this refactor was to remove X11 dependencies on juce_events
to enable non-gui applications (example, Embedded Linux apps) to have no
libx11 dependency.
The side-effect of this refactor is easy implementation of other Linux
graphical back-end, cleanup some code, better handling of X displays and
other benefits.
I removed a lot of the code from juce_linux_Windowing to separate files
for clarity. I also renamed all Linux X11 files to *linux_X11* instead of
just *linux*.
X11: Remove unnecessary XGrabButton call
========================================
This call is made unnecessary if used proper window flags when a window
is created.
Linux now compiles (clang++-3.5) without warnings when the following is enabled (these flags are identical to equator mac warnings):
-Wreorder -Wconstant-conversion -Wint-conversion -Woverloaded-virtual -Wuninitialized -Wunused-parameter -Wshorten-64-to-32 -Wstrict-aliasing -Wshadow -Wconversion -Wsign-compare -Werror -Wsign-conversion
