app_server FontManager: load all fonts and named-variants from a file

BFont::LoadFont can now use an index (0-based) and an optional named-instance (1-based)
to select the font variant from a file.
BFont::LoadFont can also use an index when loading from memory.

Change-Id: I0ce3eb6cc77d32cf43847416561eafe3063ca693
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7402
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Reviewed-by: Máximo Castañeda <antiswen@yahoo.es>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

app_server: Switch default UI font to Noto Sans.

fixes #18793

Change-Id: If53229acd6c00e1a800c6808f3f0261ae59d99bb
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7400
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Haiku-Format: Haiku-format Bot <no-reply+haikuformatbot@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Reviewed-by: nephele nephele <nep-git@packageloss.eu>

app_server: AppFontManager does not need a BLooper

Saves at least a thread and a few semaphores per app.

Change-Id: Ied43e5944471918b34b897722346a25d159090df
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6073
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

app_server: refactor font managers

Move common add/remove code to the base class and improve encapsulation.
Loading FreeType is the responsibility of the global font manager.
Rename FontManagerBase back to FontManager.

Change-Id: I9396112f01583e19d03011106fd1fa1e37958ee8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6072
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

app_server: push FontManager knowledge to FontStyle creation

Change-Id: I98a68a894642147d398faf22591a22afef4c3ba2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6060
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

app_server: new font code cleanup: includes and the like

Change-Id: I4b7f882fffc34be1984060838f13971c48d4abfc
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6059
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

app_server: FontStyle lifecycle

FontFamily is babysitted by the FontManager. It doesn't own FontStyle
references, there's no place in it to release them.

FontManager owns a reference to the FontStyle, and it is in
fStyleHashTable. Putting a style there acquires a new reference, so we
can release the one from the new style. Removing a style from the map
releases the reference. We need to clear the map before shutting down
FreeType to get rid of our last references and let the styles die now
instead of afterwards to avoid double freeing the faces.

These solve the new crash from the previous patch. It didn't crash
before because even after the map was destroyed there were still
dangling references to the styles.

On removing a user font, the style will remove itself from the family
through the manager if that was the last reference, and the manager will
remove and delete the family if it has no more styles.

Change-Id: I460ff830fa8a8a5adb90dc8ea12120e1e50a5912
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6052
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

app_server: fix double deletion of font families

The managed families are already deleted (in a correct way) in
FontManagerBase, so it's unnecessary to do it in GlobalFontManager.

Fixes #18245, though it surfaces another problem.

Change-Id: I93f1dcd1e0c1ec8d0657f3db6b484662e50c3487
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6051
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

FontManager: use correct constants for default styles

Reapply part of 12ae5308f2 that was lost in the long revision history of
user fonts. No big deal as the values are the same.

Change-Id: I26bbceb0380b33e35b105519a11e309500f9acf6
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6006
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

BFont: allow loading of user fonts from disk or memory

This patch adds an API call to BFont, called LoadFont, that
takes a string path to a font file. The user fonts are managed
via a new class called AppFontManager that inherits from the base
class FontManagerBase but adds the methods to add and remove user
fonts from disk or memory. There is also a new method called UnloadFont
to remove a user font, but on exit of an app all user fonts should be
automatically cleaned up.

Global/system fonts are managed by the GlobalFontManager, which is
a new class that also inherits from the base class FontManagerBase,
replacing the old "FontManager" class.

A maximum of 128 user fonts may be loaded, and memory fonts
may not exceed 20MB.

There's also an overloaded version of LoadFont that accepts
an area_id and loads the font from memory. A size and offset may
optionally be provided to allow for an area that contains more
than just a font.

Change-Id: I6add42bdf0c0cefc0e2e2a4984fd848c3e7269e5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4790
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>