mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-11-29 16:05:59 +01:00
c84cc660f0
Starting with Linux Kernel v5.0 two new axes are available for mice that support high-resolution wheel scrolling: REL_WHEEL_HI_RES and REL_HWHEEL_HI_RES. Both axes send data in fractions of 120 where each multiple of 120 amounts to one logical scroll event. Fractions of 120 indicate a wheel movement less than one detent. Three new events are now available on libinput: LIBINPUT_EVENT_POINTER_SCROLL_WHEEL, LIBINPUT_EVENT_POINTER_SCROLL_FINGER, and LIBINPUT_EVENT_POINTER_SCROLL_CONTINUOUS. These events replace the LIBINPUT_EVENT_POINTER_AXIS event, so new clients should simply ignore that event. Also, two new APIs are available to access the high-resolution data: libinput_event_pointer_get_scroll_value() and libinput_event_pointer_get_scroll_value_v120(). Add a project argument (LIBINPUT_HAS_SCROLL_VALUE120) to allow building against old versions of libinput or, where high-resolution scroll is available, support it.
35 lines
849 B
Meson
35 lines
849 B
Meson
msg = ['Required for libinput backend support.']
|
|
if 'libinput' in backends
|
|
msg += 'Install "libinput" or disable the libinput backend.'
|
|
endif
|
|
|
|
libinput = dependency(
|
|
'libinput',
|
|
version: '>=1.14.0',
|
|
required: 'libinput' in backends,
|
|
not_found_message: '\n'.join(msg),
|
|
)
|
|
|
|
if not libinput.found()
|
|
subdir_done()
|
|
endif
|
|
|
|
wlr_files += files(
|
|
'backend.c',
|
|
'events.c',
|
|
'keyboard.c',
|
|
'pointer.c',
|
|
'switch.c',
|
|
'tablet_pad.c',
|
|
'tablet_tool.c',
|
|
'touch.c',
|
|
)
|
|
|
|
features += { 'libinput-backend': true }
|
|
wlr_deps += libinput
|
|
|
|
# libinput hold gestures and high resolution scroll are available since 1.19.0
|
|
add_project_arguments([
|
|
'-DLIBINPUT_HAS_HOLD_GESTURES=@0@'.format(libinput.version().version_compare('>=1.19.0').to_int()),
|
|
'-DLIBINPUT_HAS_SCROLL_VALUE120=@0@'.format(libinput.version().version_compare('>=1.19.0').to_int()),
|
|
], language: 'c')
|