PatternHandler: remove unused code

hrev17117 implemented B_OP_COPY with a special treatment for text.
hrev21929 introduced the color cache to speed up that text drawing.
hrev52753 removed the special treatment of text in B_OP_COPY, but left the
color cache and the text flag behind.

Change-Id: Ib506c80a660e829132bce3ec1cb354fcfbab266c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4931
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

Begun to use structs for the BView<->app_server communication. This makes
the protocoll less prone to errors, reduces possible points of failure and
most importantly, reduces the number of function calls to the link API.
I only know the numbers for StrokeLine(), which I tested via the Benchmark
test app. With this change, drawing random colored and positioned lines
actually doubled in speed. On the BView side, the calls to
ServerLink::Attach() only halfed, while on the app_server side, the number
of calls to ServerLink::Read() is now 1/4th. It will also be worth
investigating why the link stuff is so slow at all. I also optimized
BView::DrawString() a lot in this change, but I don't have any numbers
yet. Some other commands which used multiple Attach()/Read() calls were
also optimized, at least the most important ones. Begin/EndLineArray() was
also pretty bad on the app_server side.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29937 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rewrote BeBuild.h which had "a few" consequences (got rid of all those class
definitions).
* Minor cleanup here and there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22577 a95241bf-73f2-0310-859d-f6bbb57e9c96

* get rid of RGBColor usage where it is not needed, this simplified many things,
possibly making them a little faster too
* mess with decorator button size calculation to make the whole layout scale
more agreeable with the font size (no more fixed offsets/insets), but it
is work in progress
* DefaultDecorator no longer allocated the border color array, it is part of
the object now
* small memory footprint optimizations in ViewLayer, Decorator and WindowLayer


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22003 a95241bf-73f2-0310-859d-f6bbb57e9c96

* implemented a lock up table for drawing text in B_OP_COPY,
maybe this is too resource hungry, feel free to critisize... :-)
* the speedup is there, but not overwhelming


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21929 a95241bf-73f2-0310-859d-f6bbb57e9c96

* one can now specify and "offset" which will be taken into account when
looking up the color in the pattern, this is needed because before,
patterns were always drawn with the virtual origin in screen coordinate
space, but they need to be drawn with view coordinate origin taken into
account (will be implemented in a forthcomming commit)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21639 a95241bf-73f2-0310-859d-f6bbb57e9c96

* renamed HWInterface locking to LockParallelAccess() and
LockExclusiveAccess() (meaning more or less access to the
frame buffer)
* extracted the AGGTextRenderer to be a global instance used
by each Painter instance (currently, it is thread safe because
of the global font lock, so there is some work left in this
regard)
* gave every ServerWindow it's own DrawingEngine instance, this
is work in progress. So far, there doesn't seem to be a regression,
but less fighting over the exclusive access to the frame buffer, now
each ServerWindow thread can draw in parallel. There is room for
improvement, plus I think I'm leaking the DrawingEngine...
* changed the locking for the software cursor. ShowSoftwareCursor()
can only be called if HideSoftwareCursor(BRect) returned true, or
if you called the generic HideSoftwareCursor(), since it needs
to keep the cursor lock and unlocks in Show...!
* some clean up and renaming in Decorator and friends
* moved PatternHandler.h to live along with the .cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19427 a95241bf-73f2-0310-859d-f6bbb57e9c96

Begun to use structs for the BView<->app_server communication. This makes
the protocoll less prone to errors, reduces possible points of failure and
most importantly, reduces the number of function calls to the link API.
I only know the numbers for StrokeLine(), which I tested via the Benchmark
test app. With this change, drawing random colored and positioned lines
actually doubled in speed. On the BView side, the calls to
ServerLink::Attach() only halfed, while on the app_server side, the number
of calls to ServerLink::Read() is now 1/4th. It will also be worth
investigating why the link stuff is so slow at all. I also optimized
BView::DrawString() a lot in this change, but I don't have any numbers
yet. Some other commands which used multiple Attach()/Read() calls were
also optimized, at least the most important ones. Begin/EndLineArray() was
also pretty bad on the app_server side.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29937 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Rewrote BeBuild.h which had "a few" consequences (got rid of all those class
definitions).
* Minor cleanup here and there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22577 a95241bf-73f2-0310-859d-f6bbb57e9c96

* get rid of RGBColor usage where it is not needed, this simplified many things,
possibly making them a little faster too
* mess with decorator button size calculation to make the whole layout scale
more agreeable with the font size (no more fixed offsets/insets), but it
is work in progress
* DefaultDecorator no longer allocated the border color array, it is part of
the object now
* small memory footprint optimizations in ViewLayer, Decorator and WindowLayer


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22003 a95241bf-73f2-0310-859d-f6bbb57e9c96

* implemented a lock up table for drawing text in B_OP_COPY,
maybe this is too resource hungry, feel free to critisize... :-)
* the speedup is there, but not overwhelming


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21929 a95241bf-73f2-0310-859d-f6bbb57e9c96

* one can now specify and "offset" which will be taken into account when
looking up the color in the pattern, this is needed because before,
patterns were always drawn with the virtual origin in screen coordinate
space, but they need to be drawn with view coordinate origin taken into
account (will be implemented in a forthcomming commit)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21639 a95241bf-73f2-0310-859d-f6bbb57e9c96

* renamed HWInterface locking to LockParallelAccess() and
LockExclusiveAccess() (meaning more or less access to the
frame buffer)
* extracted the AGGTextRenderer to be a global instance used
by each Painter instance (currently, it is thread safe because
of the global font lock, so there is some work left in this
regard)
* gave every ServerWindow it's own DrawingEngine instance, this
is work in progress. So far, there doesn't seem to be a regression,
but less fighting over the exclusive access to the frame buffer, now
each ServerWindow thread can draw in parallel. There is room for
improvement, plus I think I'm leaking the DrawingEngine...
* changed the locking for the software cursor. ShowSoftwareCursor()
can only be called if HideSoftwareCursor(BRect) returned true, or
if you called the generic HideSoftwareCursor(), since it needs
to keep the cursor lock and unlocks in Show...!
* some clean up and renaming in Decorator and friends
* moved PatternHandler.h to live along with the .cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19427 a95241bf-73f2-0310-859d-f6bbb57e9c96