headers/os: Make headers generator-friendly

Make Haiku headers a bit more friendly to binding generators by:
- Giving some `enum`s names (especially those that appear in
default arguments).
- Converting an internal `inline` function into a macro so that
the result could be evaluated in compile time.

Change-Id: I770674ad8fa7b24ac30b6b447d52a4b4c2530b8a
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6716
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

Set*UIColor, etc.

The inseparable changes necessary to support live color updating across the
system in a sane, safe, and performant manner.

BView gains:

HasSystemColors()
HasDefaultColors()
AdoptSystemColors()
AdoptParentColors()
AdoptViewColor(BView*)
SetViewUIColor(color_which, float tint)
SetHighUIColor(...
SetLowUIColor(...
ViewUIColor(float* tint)
HighUIColor(...
LowUIColor(...
DelayedInvalidate()

BWindow gains a simple helper method:
IsOffscreenWindow()

BMessage gains:

AddColor()
FindColor()
GetColor()
HasColor() * allegedly this API is deprecated, but I implemented it anyway
ReplaceColor()
SetColor()

Previous private ColorTools methods are made public and moved into GraphicsDefs:

mix_color, blend_color, disable_color

These are fully compatible with BeOS dan0 R5.1 methods and are just code cleanup
of BeOS example code under the OpenTracker license.

In addition, four new colors are created:
B_LINK_TEXT_COLOR
B_LINK_HOVER_COLOR
B_LINK_ACTIVE_COLOR
B_LINK_VISITED_COLOR

These changes are documented in their proper user documentation files.

In addition, due to a history rewrite, B_FOLLOW_LEFT_TOP has been defined and
used in lieu of B_FOLLOW_TOP | B_FOLLOW_LEFT and is included in this commit.

On the app_server side, the following has changed:

Add DelayedMessage - a system by which messages can be sent at a scheduled time,
and can also be merged according to set rules. A single thread is used to service the
message queue and multiple recipients can be set for each message.
Desktop gains the ability to add message ports to a DelayedMessage so that
said messages can target either all applications or all windows, as needed.

Desktop maintains a BMessage which is used to queue up all pending color changes
and the delayed messaging system is used to enact these changes after a short
period of time has passed. This prevents abuse and allows the system to merge
repeated set_ui_color events into one event for client applications, improving
performance drastically.

In addition, B_COLORS_UPDATED is sent to the BApplication, which forwards the message
to each BWindow. This is done to improve performance over having the app_server
independently informing each window.

Decorator changes are live now, which required some reworking.

Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>

Style fixes to IK, focus on docs

BPictureButton: Style fixes related to documentation

Some variable renaming for consistency.

BControl subclasses: Override SetIcon()

... and implement Perform() action for potential later use.

Optimized includes. For example, BeBuild.h is almost always already included
via SupportDefs.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32748 a95241bf-73f2-0310-859d-f6bbb57e9c96

Finished unifying the Interface Kit headers:
* Fixed copyrights (puncuation and capitalization, removed authors from
headers)
* Updated indentation style
* Unified pointer/reference style
* Re-ordered some methods for better grouping where it could be done
(abd adopted source accordingly)
* Small coding style fixes here and there

No functional change intended.

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32745 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Updated indentation style
* Fixed copyright
* Reordered inherited virtuals to improve the grouping

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32718 a95241bf-73f2-0310-859d-f6bbb57e9c96

* cleanup
* use std::nothrow



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28886 a95241bf-73f2-0310-859d-f6bbb57e9c96

New addition, with required modification to build file.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@909 a95241bf-73f2-0310-859d-f6bbb57e9c96

Style fixes to IK, focus on docs

BPictureButton: Style fixes related to documentation

Some variable renaming for consistency.

BControl subclasses: Override SetIcon()

... and implement Perform() action for potential later use.

Optimized includes. For example, BeBuild.h is almost always already included
via SupportDefs.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32748 a95241bf-73f2-0310-859d-f6bbb57e9c96

Finished unifying the Interface Kit headers:
* Fixed copyrights (puncuation and capitalization, removed authors from
headers)
* Updated indentation style
* Unified pointer/reference style
* Re-ordered some methods for better grouping where it could be done
(abd adopted source accordingly)
* Small coding style fixes here and there

No functional change intended.

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32745 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Updated indentation style
* Fixed copyright
* Reordered inherited virtuals to improve the grouping

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32718 a95241bf-73f2-0310-859d-f6bbb57e9c96

* cleanup
* use std::nothrow



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28886 a95241bf-73f2-0310-859d-f6bbb57e9c96

New addition, with required modification to build file.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@909 a95241bf-73f2-0310-859d-f6bbb57e9c96