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https://gitlab.freedesktop.org/libinput/libinput.git
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20f5f2d962
commit 3925936 introduced changes to container_of, this is hopefully the
last part of it.
In the linux kernel, container_of() takes a type name, and not a
variable. Without this, in some cases it is needed to declare an unused
variable in order to call container_of().
example:
return container_of(dispatch, struct fallback_dispatch, base);
instead of:
struct fallback_dispatch *p;
return container_of(dispatch, p, base);
This introduce also list_first_entry(), a simple wrapper around
container_of() to retrieve the first element of a non empty list. It
allows to simplify list_for_each() and list_for_each_safe().
Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* Copyright © 2015 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef EVDEV_BUTTONSET_WACOM_H
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#define EVDEV_BUTTONSET_WACOM_H
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#include "evdev.h"
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#define LIBINPUT_BUTTONSET_AXIS_NONE 0
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enum pad_status {
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PAD_NONE = 0,
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PAD_AXES_UPDATED = 1 << 0,
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PAD_BUTTONS_PRESSED = 1 << 1,
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PAD_BUTTONS_RELEASED = 1 << 2,
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};
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enum pad_axes {
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PAD_AXIS_NONE = 0,
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PAD_AXIS_RING1 = 1 << 0,
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PAD_AXIS_RING2 = 1 << 1,
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PAD_AXIS_STRIP1 = 1 << 2,
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PAD_AXIS_STRIP2 = 1 << 3,
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};
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struct button_state {
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unsigned char bits[NCHARS(KEY_CNT)];
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};
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struct pad_dispatch {
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struct evdev_dispatch base;
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struct evdev_device *device;
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unsigned char status;
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uint32_t changed_axes;
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struct button_state button_state;
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struct button_state prev_button_state;
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char button_map[KEY_CNT];
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unsigned int nbuttons;
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bool have_abs_misc_terminator;
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struct {
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struct libinput_device_config_send_events config;
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enum libinput_config_send_events_mode current_mode;
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} sendevents;
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struct {
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struct list mode_group_list;
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} modes;
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};
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static inline struct pad_dispatch*
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pad_dispatch(struct evdev_dispatch *dispatch)
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{
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evdev_verify_dispatch_type(dispatch, DISPATCH_TABLET_PAD);
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return container_of(dispatch, struct pad_dispatch, base);
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}
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static inline struct libinput *
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pad_libinput_context(const struct pad_dispatch *pad)
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{
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return evdev_libinput_context(pad->device);
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}
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int
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pad_init_leds(struct pad_dispatch *pad, struct evdev_device *device);
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void
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pad_destroy_leds(struct pad_dispatch *pad);
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void
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pad_button_update_mode(struct libinput_tablet_pad_mode_group *g,
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unsigned int pressed_button,
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enum libinput_button_state state);
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#endif
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