mirror of
https://gitlab.freedesktop.org/libinput/libinput.git
synced 2025-12-20 02:10:07 +01:00
d1dbbb7328
The debounce, wheel/wheel-low-res, double-tool and eraser-button plugins can limit themselves to a specific usage. The mtdev plugin needs to pass each each event to mtdev and the proximity timer plugin needs to get each event's timestamp so they cannot be restricted. The forced-tool could be restricted but effectively any event on the devices it works on will have one of those usages set so there's no point. Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1271>
123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/*
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* Copyright © 2025 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "config.h"
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#include <libevdev/libevdev.h>
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#include "evdev.h"
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#include "libinput-plugin-mouse-wheel-lowres.h"
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#include "libinput-plugin.h"
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#include "src/evdev-frame.h"
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static void
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wheel_plugin_device_new(struct libinput_plugin *libinput_plugin,
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struct libinput_device *device,
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struct libevdev *libevdev,
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struct udev_device *udev_device)
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{
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struct evdev_device *evdev = evdev_device(device);
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if (libevdev_has_event_code(libevdev, EV_REL, REL_WHEEL_HI_RES) ||
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libevdev_has_event_code(libevdev, EV_REL, REL_HWHEEL_HI_RES))
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return;
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if (libevdev_has_event_code(libevdev, EV_REL, REL_WHEEL) ||
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libevdev_has_event_code(libevdev, EV_REL, REL_HWHEEL))
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evdev_log_info(evdev,
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"emulating high-resolution scroll wheel events.\n");
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if (libevdev_has_event_code(libevdev, EV_REL, REL_WHEEL))
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libevdev_enable_event_code(libevdev, EV_REL, REL_WHEEL_HI_RES, NULL);
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if (libevdev_has_event_code(libevdev, EV_REL, REL_HWHEEL))
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libevdev_enable_event_code(libevdev, EV_REL, REL_HWHEEL_HI_RES, NULL);
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libinput_plugin_enable_device_event_frame(libinput_plugin, device, true);
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libinput_plugin_enable_evdev_usage(libinput_plugin, EVDEV_REL_WHEEL);
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libinput_plugin_enable_evdev_usage(libinput_plugin, EVDEV_REL_HWHEEL);
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/* A device may have those disabled via a quirk but we just re-enabled it
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* above. Make sure we get those events too to filter them out */
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libinput_plugin_enable_evdev_usage(libinput_plugin, EVDEV_REL_WHEEL_HI_RES);
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libinput_plugin_enable_evdev_usage(libinput_plugin, EVDEV_REL_HWHEEL_HI_RES);
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}
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static void
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wheel_plugin_evdev_frame(struct libinput_plugin *libinput_plugin,
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struct libinput_device *device,
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struct evdev_frame *frame)
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{
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size_t nevents;
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struct evdev_event *events = evdev_frame_get_events(frame, &nevents);
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_unref_(evdev_frame) *filtered_frame = evdev_frame_new(nevents + 2);
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for (size_t i = 0; i < nevents; i++) {
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struct evdev_event *e = &events[i];
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switch (evdev_usage_enum(e->usage)) {
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case EVDEV_REL_WHEEL_HI_RES:
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case EVDEV_REL_HWHEEL_HI_RES:
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/* In the uncommon case that our device sends high-res events
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* filter those out. This can happen on devices that have the
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* highres scroll axes disabled via quirks. The device still
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* sends events so when we re-enable the axis in
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* wheel_plugin_device_new we get the device events again,
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* effectively duplicating the high resolution scroll events.
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*/
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break;
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case EVDEV_REL_WHEEL:
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evdev_frame_append(filtered_frame, e, 1);
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evdev_frame_append_one(filtered_frame,
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evdev_usage_from(EVDEV_REL_WHEEL_HI_RES),
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e->value * 120);
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break;
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case EVDEV_REL_HWHEEL:
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evdev_frame_append(filtered_frame, e, 1);
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evdev_frame_append_one(
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filtered_frame,
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evdev_usage_from(EVDEV_REL_HWHEEL_HI_RES),
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e->value * 120);
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break;
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default:
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evdev_frame_append(filtered_frame, e, 1);
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break;
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}
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}
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evdev_frame_set(frame,
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evdev_frame_get_events(filtered_frame, NULL),
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evdev_frame_get_count(filtered_frame));
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}
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static const struct libinput_plugin_interface interface = {
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.device_new = wheel_plugin_device_new,
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.evdev_frame = wheel_plugin_evdev_frame,
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};
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void
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libinput_mouse_plugin_wheel_lowres(struct libinput *libinput)
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{
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_unref_(libinput_plugin) *p =
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libinput_plugin_new(libinput, "mouse-wheel-lowres", &interface, NULL);
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}
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