* ‘term’ struct contains an array of 160 fcft glyph pointers
* the glyph pointers are lazily allocated when we need to draw a box
drawings character
* Filtering out box drawings characters is easy - they are (except
unicode 13, which isn’t handled yet )all in a single range.
Dependency chains:
* pgolib -> terminal.c -> terminal.h -> wayland.h
* vtlib -> csi.c -> config.h -> wayland.h
wayland.h includes <primary-selection-unstable-v1.h>, which must be
generated by a custom_target() rule *before* any sources that require
it are built. Failure to fully specify these dependencies can otherwise
result in a race condition, where a dependent source file gets compiled
(and fails with a "header not found" error) before the header itself
has been generated.
* Split up source files into several static libraries: misc + vtlib
* Add a new executable, pgo, that links to vtlib
* pgo is kind of like a mock test:
- provides stub implementations of functions not present in vtlib
- sets up a dummy terminal instance
- calls vt_from_slave() with static (pre-generated) content
Instead of writing (and logging errors for) every parameter, one at a
time, send all fixed size data in a single struct, followed by all the
variable length data.
* New function: rgb_to_hsl()
* New function: hsl_to_rgb()
* Replace XTerm’s hls_to_rgb() with our own, hsl_to_rgb().
* Ensure hue/lum/sat values are within range before calling
hsl_to_rgb()
Note that sixels’ use the following primary hues:
* blue: 0°
* red: 120
* green: 240°
While “standard” HSL uses:
* red: 0°
* green: 120°
* blue: 240°
Thus, we need to adjust the sixel’s hue value before calling
hsl_to_rgb().
Use the new fcft_set_scaling_filter() API to use a non-default scaling
filter.
By default, we use lanczo3, the ‘best’ filter. This overrides the
default in fcft, which is ‘cubic’ filtering.
This removes the DWARF stack unwinding tables, which shrinks the
".eh_frame" and ".eh_frame_hdr" sections by about 24KiB. Stack
unwinding tables are pretty useless to a C program compiled in
release mode.
* Rename user_warning to user_notification
* Add warning and error types (in addition to the existing deprecated)
* Simplify logic when emitting a user notification after forking; we
don't need to copy the notification data since we're in a new
process and have total control over that memory.
When resizing the font on-the-fly, we now do a complete
font-reload (this is basically what fcft_size_adjust() did anyway).
To get the correct size, we maintain the current size ourselves.
We get the initial size from the user-provided font pattern, by
converting the string to an FcPattern, and using FcPatternGet() to
retrieve both the FC_SIZE and FC_PIXEL_SIZE attributes. These
attributes are then removed from the pattern, and the pattern is
converted back to a string.
The terminal struct maintains a copy of the font sizes. These are
initially set to the sizes from the config.
When the user resizes the font, the terminal-local sizes are
adjusted. To ensure the primary and user-configured fallback fonts are
resizes equally much, convert any pixel sizes to point sizes at this
point.
When the font size is reset, we reload the font sizes from the
config (thus once again returning actual pixel-sizes, if that's what
the user has configured).
