Almost all logic stays in "logical" (unscaled coordinates), which
means the patch is small and things like DnD, window moving and
resizing, menu handling, menuapplets, etc all work without changes.
Screen knows about phyiscal coordinates and mouse handling internally is
in physical coordinates (so that two 1 pixel movements in succession can
translate to one 1 logical coordinate mouse movement -- only a single
event is sent in this case, on the 2nd moved pixel).
Compositor also knows about physical pixels for its backbuffers. This is
a temporary state -- in a follow-up, I'll try to let Bitmaps know about
their intrinsic scale, then Compositor won't have to know about pixels
any longer. Most of Compositor's logic stays in view units, just
blitting to and from back buffers and the cursor save buffer has to be
done in pixels. The back buffer Painter gets a scale applied which
transparently handles all drawing. (But since the backbuffer and cursor
save buffer are also HighDPI, they currently need to be drawn using a
hack temporary unscaled Painter object. This will also go away once
Bitmaps know about their intrinsic scale.)
With this, editing WindowServer.ini to say
Width=800
Height=600
ScaleFactor=2
and booting brings up a fully-functional HighDPI UI.
(Except for minimizing windows, which will crash the window server
until #4932 is merged. And I didn't test the window switcher since the
win-tab shortcut doesn't work on my system.) It's all pixel-scaled,
but it looks pretty decent :^)
This adds a scale factor to Painter, which will be used for HighDPI
support. It's also a step towards general affine transforms on Painters.
All of Painter's public API takes logical coordinates, while some
internals deal with physical coordinates now. If scale == 1, logical
and physical coordinates are the same. For scale == 2, a 200x100 bitmap
would be covered by a logical {0, 0, 100, 50} rect, while its physical
size would be {0, 0, 200, 100}.
Most of Painter's functions just assert that scale() == 1 is for now,
but most functions called by WindowServer are updated to handle
arbitrary (integer) scale.
Also add a new Demo "LibGfxScaleDemo" that covers the converted
functions and that can be used to iteratively add scaling support
to more functions.
To make Painter's interface deal with logical coordinates only,
make translation() and clip_rect() non-public.
I have a local branch that gets us past implementation stage 1
in this doc, and it seems like a useful enough checkpoint to
upstream it and then iterate in tree.
* Add SERENITY_ARCH option to CMake for selecting the target toolchain
* Port all build scripts but continue to use i686
* Update GitHub Actions cache to include BuildIt.sh
We already have installation instructions for ubuntu but not yet for
Debian. Gcc-9 is not available on Debian stable so instructions for
switching to and from Debian testing are added.
Gcc 8.3.0 (which is the current version in debian 10 stable) seems to
fail at building AK. New people might get stuck when they try to run
make inside the ./Build folder and fail at building serenity.
It seems that new people go to the build instructions from the main
README, don't see Windows and are then stuck.
We do have instructions for Windows, but they aren't noted in the build
instructions, so new people get stuck thinking there's no way to build
on Windows.
Inspired by #3047, and my struggles to understand how cmake is supposed to work ^^
Thanks to @bgianfo, who made me realize that ninja can be used just like make.
No idea why I didn't notice that earlier.
This now descibes how to get the regular `make run` workflow to work
under Windows using native QEMU. It describes how to override the QEMU
binary path, as well as overriding the SerenityOS disk image file
location with a native Windows path.
Also fixes some minor spelling and punctuation issues.
WSL2 is now available in non-insider builds of Windows, starting
with version 2004.
Add a filesystem note regarding use of /mnt/c et al from WSL2 for
compiling serenity. Namely, recommend against it as the performance
across the 9p file system protocol is terrible for IO heavy jobs.
Toolchain/BuiltIt.sh expected a version of cmake which
apt did not provide for my system. Added note of the
expected version and where to find a newer version.
This commit updates CLionConfiguration.md and NotesOnWSL.md so that
they comply with new build system. In addition to that, the WSL doc
is updated to include instructions to run qemu (and serenity) natively
on Windows, without needing an X-window server.
