This adds a DirectWrite font rasterizer for Windows and enables
subpixel rendering and hinting.
It also completely replaces rusttype for font rendering on Windows,
allowing Alacritty to use the native font stacks on all operating systems.
Fixes#1673.
Fixes#2316.
By setting the minimum Rust version and enforcing it with CI, Alacritty
should hopefully make it possible for maintainers to package the
application even on distributions which are not rolling release.
The 1.31.0 target has been chosen here because it's the first version of
the Rust 2018 release. Bumping this version in the future should be
considered to be a breaking change and should only be done with caution
and in consideration of the supported Rust versions of the major
distributions available.
This fixes#2277.
Initial support for Windows is implemented using the winpty translation
layer. Clipboard support for Windows is provided through the `clipboard`
crate, and font rasterization is provided by RustType.
The tty.rs file has been split into OS-specific files to separate
standard pty handling from the winpty implementation.
Several binary components are fetched via build script on windows
including libclang and winpty. These could be integrated more directly
in the future either by building those dependencies as part of the
Alacritty build process or by leveraging git lfs to store the artifacts.
Fixes#28.
The patch uses the Cargo.toml patch section to force a single downstream
choice of freetype-sys instead of relying on forks of other crates. It
also bumps the fontconfig/freetype dependencies in the process.
The core-* dependencies have been updated and every breaking
change has been resolved.
These are the main changes which required adaption:
- font_path() returns a PathBuf now
- get_descriptors() returns an Option<CFArray>
- get_advances_for_glyphs and get_glyphs_for_characters are now unsafe.
All packages which did not have breaking updates have also been updated.
Upgrading glutin to the latest version allows building alacritty even
with old XRandr versions.
This is relevant for Debian machines (and other ancient systems).
Updated the version of some dependencies.
This also changes to a new clippy version so clippy can work with the latest nightly compiler again. Some issues created by new lints have been fixed.
This adds a bunch of APIs to CGContext (and supporting types) that
aren't actually necessary to turn on subpixel rendering. The key for
subpixel rendering were the options passed to bitmap_context_create().
Specifically, kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host
are necessary to enable it.
Alacritty now runs on macOS using CoreText for font rendering.
The font rendering subsystems were moved into a separate crate called
`font`. The font crate provides a unified (albeit limited) API which
wraps CoreText on macOS and FreeType/FontConfig on other platforms. The
unified API differed slightly from what the original Rasterizer for
freetype implemented, and it was updated accordingly.
The cell separation properties (sep_x and sep_y) are now premultiplied
into the cell width and height. They were previously passed through as
uniforms to the shaders; removing them prevents a lot of redundant work.
`libc` has some differences between Linux and macOS. `__errno_location`
is not available on macOS, and the `errno` crate was brought in to
provide a cross-platform API for dealing with errno.
Differences in `openpty` were handled by implementing a macOS specific
version. It would be worth investigating a way to unify the
implementations at some point.
A type mismatch with TIOCSCTTY was resolved with a cast.
Differences in libc::passwd struct fields were resolved by using
std::mem::uninitialized instead of zeroing the struct ourselves. This
has the benefit of being much cleaner.
The thread setup had to be changed to support both macOS and Linux.
macOS requires that events from the window be handled on the main
thread. Failure to do so will prevent the glutin window from even
showing up! For this reason, the renderer and parser were moved to their
own thread, and the input is received on the main thread. This is
essentially reverse the setup prior to this commit. Renderer
initialization (and thus font cache initialization) had to be moved to
the rendering thread as well since there's no way to make_context(null)
with glx on Linux. Trying to just call make_context a second time on the
rendering thread had resulted in a panic!.
