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#include <assert.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <wlr/interfaces/wlr_tablet_pad.h>
#include <wlr/interfaces/wlr_tablet_tool.h>
#include <wlr/util/log.h>
#include "backend/wayland.h"
#include "util/time.h"
#include "tablet-unstable-v2-client-protocol.h"
struct tablet_tool {
/* static */
struct wlr_wl_seat *seat;
/* semi-static */
struct wlr_wl_output *output;
double pre_x, pre_y;
/* per frame */
double x, y;
double pressure;
double distance;
double tilt_x, tilt_y;
double rotation;
double slider;
double wheel_delta;
bool is_in;
bool is_out;
bool is_up;
bool is_down;
};
struct tablet_pad_ring {
struct wl_list link; // tablet_pad_group.rings
/* static */
struct zwp_tablet_pad_ring_v2 *ring;
struct tablet_pad_group *group;
size_t index;
/* per frame */
enum wlr_tablet_pad_ring_source source;
double angle;
bool stopped;
};
struct tablet_pad_strip {
struct wl_list link; // tablet_pad_group.strips
struct zwp_tablet_pad_strip_v2 *strip;
struct tablet_pad_group *group;
size_t index;
enum wlr_tablet_pad_strip_source source;
double position;
bool stopped;
};
struct tablet_pad_group {
struct zwp_tablet_pad_group_v2 *pad_group;
struct wlr_tablet_pad *pad;
unsigned int mode;
struct wlr_tablet_pad_group group;
struct wl_list rings; // tablet_pad_ring.link
struct wl_list strips; // tablet_pad_strips.link
};
static void handle_tablet_pad_ring_source(void *data,
struct zwp_tablet_pad_ring_v2 *zwp_tablet_pad_ring_v2,
uint32_t source) {
struct tablet_pad_ring *ring = data;
ring->source = source;
}
static void handle_tablet_pad_ring_angle(void *data,
struct zwp_tablet_pad_ring_v2 *zwp_tablet_pad_ring_v2,
wl_fixed_t degrees) {
struct tablet_pad_ring *ring = data;
ring->angle = wl_fixed_to_double(degrees);
}
static void handle_tablet_pad_ring_stop(void *data,
struct zwp_tablet_pad_ring_v2 *zwp_tablet_pad_ring_v2) {
struct tablet_pad_ring *ring = data;
ring->stopped = true;
}
static void handle_tablet_pad_ring_frame(void *data,
struct zwp_tablet_pad_ring_v2 *zwp_tablet_pad_ring_v2,
uint32_t time) {
struct tablet_pad_ring *ring = data;
struct wlr_tablet_pad_ring_event evt = {
.time_msec = time,
.source = ring->source,
.ring = ring->index,
.position = ring->angle,
.mode = ring->group->mode,
};
if (ring->angle >= 0) {
wl_signal_emit_mutable(&ring->group->pad->events.ring, &evt);
}
if (ring->stopped) {
evt.position = -1;
wl_signal_emit_mutable(&ring->group->pad->events.ring, &evt);
}
ring->angle = -1;
ring->stopped = false;
ring->source = 0;
}
static const struct zwp_tablet_pad_ring_v2_listener tablet_pad_ring_listener = {
.source = handle_tablet_pad_ring_source,
.angle = handle_tablet_pad_ring_angle,
.stop = handle_tablet_pad_ring_stop,
.frame = handle_tablet_pad_ring_frame,
};
static void handle_tablet_pad_strip_source(void *data,
struct zwp_tablet_pad_strip_v2 *zwp_tablet_pad_strip_v2,
uint32_t source) {
struct tablet_pad_strip *strip = data;
strip->source = source;
}
static void handle_tablet_pad_strip_position(void *data,
struct zwp_tablet_pad_strip_v2 *zwp_tablet_pad_strip_v2,
uint32_t position) {
struct tablet_pad_strip *strip = data;
strip->position = (double) position / 65536.0;
}
static void handle_tablet_pad_strip_stop(void *data,
struct zwp_tablet_pad_strip_v2 *zwp_tablet_pad_strip_v2) {
struct tablet_pad_strip *strip = data;
strip->stopped = true;
}
static void handle_tablet_pad_strip_frame(void *data,
struct zwp_tablet_pad_strip_v2 *zwp_tablet_pad_strip_v2,
uint32_t time) {
struct tablet_pad_strip *strip = data;
struct wlr_tablet_pad_strip_event evt = {
.time_msec = time,
.source = strip->source,
.strip = strip->index,
.position = strip->position,
.mode = strip->group->mode,
};
if (strip->position >= 0) {
wl_signal_emit_mutable(&strip->group->pad->events.strip, &evt);
}
if (strip->stopped) {
evt.position = -1;
wl_signal_emit_mutable(&strip->group->pad->events.strip, &evt);
}
strip->position = -1;
strip->stopped = false;
strip->source = 0;
}
static const struct zwp_tablet_pad_strip_v2_listener tablet_pad_strip_listener = {
.source = handle_tablet_pad_strip_source,
.position = handle_tablet_pad_strip_position,
.stop = handle_tablet_pad_strip_stop,
.frame = handle_tablet_pad_strip_frame,
};
static void handle_tablet_pad_group_buttons(void *data,
struct zwp_tablet_pad_group_v2 *pad_group,
struct wl_array *buttons) {
struct tablet_pad_group *group = data;
free(group->group.buttons);
group->group.buttons = calloc(1, buttons->size);
if (!group->group.buttons) {
// FIXME: Add actual error handling
return;
}
group->group.button_count = buttons->size / sizeof(int);
memcpy(group->group.buttons, buttons->data, buttons->size);
}
static void handle_tablet_pad_group_modes(void *data,
struct zwp_tablet_pad_group_v2 *pad_group, uint32_t modes) {
struct tablet_pad_group *group = data;
group->group.mode_count = modes;
}
static void handle_tablet_pad_group_ring(void *data,
struct zwp_tablet_pad_group_v2 *pad_group,
struct zwp_tablet_pad_ring_v2 *ring) {
struct tablet_pad_group *group = data;
struct tablet_pad_ring *tablet_ring = calloc(1, sizeof(*tablet_ring));
if (!tablet_ring) {
zwp_tablet_pad_ring_v2_destroy(ring);
return;
}
tablet_ring->index = group->pad->ring_count++;
tablet_ring->group = group;
zwp_tablet_pad_ring_v2_add_listener(ring, &tablet_pad_ring_listener,
tablet_ring);
group->group.rings = realloc(group->group.rings,
++group->group.ring_count * sizeof(unsigned int));
group->group.rings[group->group.ring_count - 1] =
tablet_ring->index;
}
static void handle_tablet_pad_group_strip(void *data,
struct zwp_tablet_pad_group_v2 *pad_group,
struct zwp_tablet_pad_strip_v2 *strip) {
struct tablet_pad_group *group = data;
struct tablet_pad_strip *tablet_strip = calloc(1, sizeof(*tablet_strip));
if (!tablet_strip) {
zwp_tablet_pad_strip_v2_destroy(strip);
return;
}
tablet_strip->index = group->pad->strip_count++;
tablet_strip->group = group;
zwp_tablet_pad_strip_v2_add_listener(strip, &tablet_pad_strip_listener,
tablet_strip);
group->group.strips = realloc(group->group.strips,
++group->group.strip_count * sizeof(unsigned int));
group->group.strips[group->group.strip_count - 1] =
tablet_strip->index;
}
static void handle_tablet_pad_group_done(void *data,
struct zwp_tablet_pad_group_v2 *pad_group) {
/* Empty for now */
}
static void handle_tablet_pad_group_mode_switch(void *data,
struct zwp_tablet_pad_group_v2 *pad_group,
uint32_t time, uint32_t serial, uint32_t mode) {
struct tablet_pad_group *group = data;
group->mode = mode;
}
static void destroy_tablet_pad_group(struct tablet_pad_group *group) {
/* No need to remove the link on strips rings as long as we do *not*
* wl_list_remove on the wl_groups ring/strip attributes here */
struct tablet_pad_ring *ring, *tmp_ring;
wl_list_for_each_safe(ring, tmp_ring, &group->rings, link) {
zwp_tablet_pad_ring_v2_destroy(ring->ring);
free(ring);
}
struct tablet_pad_strip *strip, *tmp_strip;
wl_list_for_each_safe(strip, tmp_strip, &group->strips, link) {
zwp_tablet_pad_strip_v2_destroy(strip->strip);
free(strip);
}
zwp_tablet_pad_group_v2_destroy(group->pad_group);
free(group->group.buttons);
free(group->group.strips);
free(group->group.rings);
wl_list_remove(&group->group.link);
free(group);
}
static const struct zwp_tablet_pad_group_v2_listener tablet_pad_group_listener = {
.buttons = handle_tablet_pad_group_buttons,
.modes = handle_tablet_pad_group_modes,
.ring = handle_tablet_pad_group_ring,
.strip = handle_tablet_pad_group_strip,
.done = handle_tablet_pad_group_done,
.mode_switch = handle_tablet_pad_group_mode_switch,
};
static void handle_tablet_pad_group(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad,
struct zwp_tablet_pad_group_v2 *pad_group) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet_pad *pad = &seat->wlr_tablet_pad;
struct tablet_pad_group *group = calloc(1, sizeof(*group));
if (!group) {
wlr_log_errno(WLR_ERROR, "failed to allocate tablet_pad_group");
zwp_tablet_pad_group_v2_destroy(pad_group);
return;
}
group->pad_group = pad_group;
group->pad = pad;
wl_list_init(&group->rings);
wl_list_init(&group->strips);
zwp_tablet_pad_group_v2_add_listener(pad_group,
&tablet_pad_group_listener, group);
wl_list_insert(&pad->groups, &group->group.link);
}
static void handle_tablet_pad_path(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2, const char *path) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet_pad *tablet_pad = &seat->wlr_tablet_pad;
char **dst = wl_array_add(&tablet_pad->paths, sizeof(char *));
*dst = strdup(path);
}
static void handle_tablet_pad_buttons(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2, uint32_t buttons) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet_pad *tablet_pad = &seat->wlr_tablet_pad;
tablet_pad->button_count = buttons;
}
static void handle_tablet_pad_button(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2,
uint32_t time, uint32_t button, uint32_t state) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet_pad_button_event evt = {
.time_msec = time,
.button = button,
.state = state,
.mode = 0,
.group = 0,
};
wl_signal_emit_mutable(&seat->wlr_tablet_pad.events.button, &evt);
}
static void handle_tablet_pad_done(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2) {
struct wlr_wl_seat *seat = data;
wl_signal_emit_mutable(&seat->backend->backend.events.new_input,
&seat->wlr_tablet_pad.base);
}
static void handle_tablet_pad_enter(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2,
uint32_t serial, struct zwp_tablet_v2 *tablet_p,
struct wl_surface *surface) {
struct wlr_wl_seat *seat = data;
assert(seat->zwp_tablet_v2 == tablet_p);
wl_signal_emit_mutable(&seat->wlr_tablet_pad.events.attach_tablet,
&seat->wlr_tablet_tool);
}
static void handle_tablet_pad_leave(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2,
uint32_t serial, struct wl_surface *surface) {
/* Empty. Probably staying that way, unless we want to create/destroy
* tablet on enter/leave events (ehh) */
}
static void handle_tablet_pad_removed(void *data,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet_pad *tablet_pad = &seat->wlr_tablet_pad;
struct tablet_pad_group *group, *it;
wl_list_for_each_safe(group, it, &tablet_pad->groups, group.link) {
destroy_tablet_pad_group(group);
}
wlr_tablet_pad_finish(tablet_pad);
zwp_tablet_pad_v2_destroy(seat->zwp_tablet_pad_v2);
seat->zwp_tablet_pad_v2 = NULL;
}
static const struct zwp_tablet_pad_v2_listener tablet_pad_listener = {
.group = handle_tablet_pad_group,
.path = handle_tablet_pad_path,
.buttons = handle_tablet_pad_buttons,
.button = handle_tablet_pad_button,
.done = handle_tablet_pad_done,
.enter = handle_tablet_pad_enter,
.leave = handle_tablet_pad_leave,
.removed = handle_tablet_pad_removed,
};
const struct wlr_tablet_pad_impl wl_tablet_pad_impl = {
.name = "wl-tablet-pad",
};
static void handle_pad_added(void *data,
struct zwp_tablet_seat_v2 *zwp_tablet_seat_v2,
struct zwp_tablet_pad_v2 *zwp_tablet_pad_v2) {
struct wlr_wl_seat *seat = data;
if (seat->zwp_tablet_pad_v2 != NULL) {
wlr_log(WLR_ERROR, "zwp_tablet_pad_v2 is already present");
return;
}
seat->zwp_tablet_pad_v2 = zwp_tablet_pad_v2;
zwp_tablet_pad_v2_add_listener(zwp_tablet_pad_v2, &tablet_pad_listener,
seat);
wlr_tablet_pad_init(&seat->wlr_tablet_pad, &wl_tablet_pad_impl,
"wlr_tablet_v2");
}
static void handle_tablet_tool_done(void *data,
struct zwp_tablet_tool_v2 *id) {
/* empty */
}
static enum wlr_tablet_tool_type tablet_type_to_wlr_type(
enum zwp_tablet_tool_v2_type type) {
switch (type) {
case ZWP_TABLET_TOOL_V2_TYPE_PEN:
return WLR_TABLET_TOOL_TYPE_PEN;
case ZWP_TABLET_TOOL_V2_TYPE_ERASER:
return WLR_TABLET_TOOL_TYPE_ERASER;
case ZWP_TABLET_TOOL_V2_TYPE_BRUSH:
return WLR_TABLET_TOOL_TYPE_BRUSH;
case ZWP_TABLET_TOOL_V2_TYPE_PENCIL:
return WLR_TABLET_TOOL_TYPE_PENCIL;
case ZWP_TABLET_TOOL_V2_TYPE_AIRBRUSH:
return WLR_TABLET_TOOL_TYPE_AIRBRUSH;
case ZWP_TABLET_TOOL_V2_TYPE_MOUSE:
return WLR_TABLET_TOOL_TYPE_MOUSE;
case ZWP_TABLET_TOOL_V2_TYPE_LENS:
return WLR_TABLET_TOOL_TYPE_LENS;
case ZWP_TABLET_TOOL_V2_TYPE_FINGER:
// unused, see:
// https://gitlab.freedesktop.org/wayland/wayland-protocols/-/issues/18
abort();
}
abort(); // unreachable
}
static void handle_tablet_tool_type(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t tool_type) {
struct tablet_tool *tool = data;
struct wlr_tablet_tool *wlr_tool = &tool->seat->wlr_tablet_tool;
wlr_tool->type = tablet_type_to_wlr_type(tool_type);
}
static void handle_tablet_tool_serial(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t high, uint32_t low) {
struct tablet_tool *tool = data;
struct wlr_tablet_tool *wlr_tool = &tool->seat->wlr_tablet_tool;
wlr_tool->hardware_serial = ((uint64_t) high) << 32 | (uint64_t) low;
}
static void handle_tablet_tool_id_wacom(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t high, uint32_t low) {
struct tablet_tool *tool = data;
struct wlr_tablet_tool *wlr_tool = &tool->seat->wlr_tablet_tool;
wlr_tool->hardware_wacom = ((uint64_t) high) << 32 | (uint64_t) low;
}
static void handle_tablet_tool_capability(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t capability) {
struct tablet_tool *tool = data;
struct wlr_tablet_tool *wlr_tool = &tool->seat->wlr_tablet_tool;
/* One event is sent for each capability */
switch (capability) {
case ZWP_TABLET_TOOL_V2_CAPABILITY_TILT:
wlr_tool->tilt = true;
break;
case ZWP_TABLET_TOOL_V2_CAPABILITY_PRESSURE:
wlr_tool->pressure = true;
break;
case ZWP_TABLET_TOOL_V2_CAPABILITY_DISTANCE:
wlr_tool->distance = true;
break;
case ZWP_TABLET_TOOL_V2_CAPABILITY_ROTATION:
wlr_tool->rotation = true;
break;
case ZWP_TABLET_TOOL_V2_CAPABILITY_SLIDER:
wlr_tool->slider = true;
break;
case ZWP_TABLET_TOOL_V2_CAPABILITY_WHEEL:
wlr_tool->wheel = true;
break;
}
}
static void handle_tablet_tool_proximity_in(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t serial,
struct zwp_tablet_v2 *tablet_id, struct wl_surface *surface) {
struct tablet_tool *tool = data;
assert(tablet_id == tool->seat->zwp_tablet_v2);
struct wlr_wl_output *output = get_wl_output_from_surface(tool->seat->backend, surface);
if (output == NULL) {
return;
}
tool->is_in = true;
tool->output = output;
}
static void handle_tablet_tool_proximity_out(void *data,
struct zwp_tablet_tool_v2 *id) {
struct tablet_tool *tool = data;
tool->is_out = true;
tool->output = NULL;
}
static void handle_tablet_tool_down(void *data, struct zwp_tablet_tool_v2 *id,
unsigned int serial) {
struct tablet_tool *tool = data;
tool->is_down = true;
}
static void handle_tablet_tool_up(void *data, struct zwp_tablet_tool_v2 *id) {
struct tablet_tool *tool = data;
tool->is_up = true;
}
static void handle_tablet_tool_motion(void *data, struct zwp_tablet_tool_v2 *id,
wl_fixed_t x, wl_fixed_t y) {
struct tablet_tool *tool = data;
struct wlr_wl_output *output = tool->output;
assert(output);
tool->x = wl_fixed_to_double(x) / output->wlr_output.width;
tool->y = wl_fixed_to_double(y) / output->wlr_output.height;
}
static void handle_tablet_tool_pressure(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t pressure) {
struct tablet_tool *tool = data;
tool->pressure = (double) pressure / 65535.0;
}
static void handle_tablet_tool_distance(void *data,
struct zwp_tablet_tool_v2 *id, uint32_t distance) {
struct tablet_tool *tool = data;
tool->distance = (double) distance / 65535.0;
}
static void handle_tablet_tool_tilt(void *data, struct zwp_tablet_tool_v2 *id,
wl_fixed_t x, wl_fixed_t y) {
struct tablet_tool *tool = data;
tool->tilt_x = wl_fixed_to_double(x);
tool->tilt_y = wl_fixed_to_double(y);
}
static void handle_tablet_tool_rotation(void *data,
struct zwp_tablet_tool_v2 *id, wl_fixed_t rotation) {
struct tablet_tool *tool = data;
tool->rotation = wl_fixed_to_double(rotation);
}
static void handle_tablet_tool_slider(void *data, struct zwp_tablet_tool_v2 *id,
int slider) {
struct tablet_tool *tool = data;
tool->slider = (double) slider / 65535.0;;
}
// TODO: This looks wrong :/
static void handle_tablet_tool_wheel(void *data, struct zwp_tablet_tool_v2 *id,
wl_fixed_t degree, int clicks) {
struct tablet_tool *tool = data;
tool->wheel_delta = wl_fixed_to_double(degree);
}
static void handle_tablet_tool_button(void *data,
struct zwp_tablet_tool_v2 *id,
uint32_t serial, uint32_t button, uint32_t state) {
struct tablet_tool *tool = data;
struct wlr_wl_seat *seat = tool->seat;
struct wlr_tablet *tablet = &seat->wlr_tablet;
struct wlr_tablet_tool_button_event evt = {
.tablet = tablet,
.tool = &seat->wlr_tablet_tool,
.time_msec = get_current_time_msec(),
.button = button,
.state = state == ZWP_TABLET_TOOL_V2_BUTTON_STATE_RELEASED ?
WLR_BUTTON_RELEASED : WLR_BUTTON_PRESSED,
};
wl_signal_emit_mutable(&tablet->events.button, &evt);
}
static void clear_tablet_tool_values(struct tablet_tool *tool) {
tool->is_out = tool->is_in = false;
tool->is_up = tool->is_down = false;
tool->x = tool->y = NAN;
tool->pressure = NAN;
tool->distance = NAN;
tool->tilt_x = tool->tilt_y = NAN;
tool->rotation = NAN;
tool->slider = NAN;
tool->wheel_delta = NAN;
}
static void handle_tablet_tool_frame(void *data,
struct zwp_tablet_tool_v2 *id,
uint32_t time) {
struct tablet_tool *tool = data;
struct wlr_wl_seat *seat = tool->seat;
if (tool->is_out && tool->is_in) {
/* we got a tablet tool coming in and out of proximity before
* we could process it. Just ignore anything it did */
goto clear_values;
}
struct wlr_tablet *tablet = &seat->wlr_tablet;
if (tool->is_in) {
struct wlr_tablet_tool_proximity_event evt = {
.tablet = tablet,
.tool = &seat->wlr_tablet_tool,
.time_msec = time,
.x = tool->x,
.y = tool->y,
.state = WLR_TABLET_TOOL_PROXIMITY_IN,
};
wl_signal_emit_mutable(&tablet->events.proximity, &evt);
}
{
struct wlr_tablet_tool_axis_event evt = {
.tablet = tablet,
.tool = &seat->wlr_tablet_tool,
.time_msec = time,
.updated_axes = 0,
};
if (!isnan(tool->x) && !tool->is_in) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_X;
evt.x = tool->x;
}
if (!isnan(tool->y) && !tool->is_in) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_Y;
evt.y = tool->y;
}
if (!isnan(tool->pressure)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_PRESSURE;
evt.pressure = tool->pressure;
}
if (!isnan(tool->distance)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_DISTANCE;
evt.distance = tool->distance;
}
if (!isnan(tool->tilt_x)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_TILT_X;
evt.tilt_x = tool->tilt_x;
}
if (!isnan(tool->tilt_y)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_TILT_Y;
evt.tilt_y = tool->tilt_y;
}
if (!isnan(tool->rotation)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_ROTATION;
evt.rotation = tool->rotation;
}
if (!isnan(tool->slider)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_SLIDER;
evt.slider = tool->slider;
}
if (!isnan(tool->wheel_delta)) {
evt.updated_axes |= WLR_TABLET_TOOL_AXIS_WHEEL;
evt.wheel_delta = tool->wheel_delta;
}
if (evt.updated_axes) {
wl_signal_emit_mutable(&tablet->events.axis, &evt);
}
}
/* This will always send down then up if we got both.
* Maybe we should send them right away, in case we get up then both in
* series?
* Downside: Here we have the frame time, if we sent right away, we
* need to generate the time */
if (tool->is_down) {
struct wlr_tablet_tool_tip_event evt = {
.tablet = tablet,
.tool = &seat->wlr_tablet_tool,
.time_msec = time,
.x = tool->x,
.y = tool->y,
.state = WLR_TABLET_TOOL_TIP_DOWN,
};
wl_signal_emit_mutable(&tablet->events.tip, &evt);
}
if (tool->is_up) {
struct wlr_tablet_tool_tip_event evt = {
.tablet = tablet,
.tool = &seat->wlr_tablet_tool,
.time_msec = time,
.x = tool->x,
.y = tool->y,
.state = WLR_TABLET_TOOL_TIP_UP,
};
wl_signal_emit_mutable(&tablet->events.tip, &evt);
}
if (tool->is_out) {
struct wlr_tablet_tool_proximity_event evt = {
.tablet = tablet,
.tool = &seat->wlr_tablet_tool,
.time_msec = time,
.x = tool->x,
.y = tool->y,
.state = WLR_TABLET_TOOL_PROXIMITY_OUT,
};
wl_signal_emit_mutable(&tablet->events.proximity, &evt);
}
clear_values:
clear_tablet_tool_values(tool);
}
static void handle_tablet_tool_removed(void *data,
struct zwp_tablet_tool_v2 *id) {
struct tablet_tool *tool = data;
struct wlr_wl_seat *seat = tool->seat;
zwp_tablet_tool_v2_destroy(seat->zwp_tablet_tool_v2);
seat->zwp_tablet_tool_v2 = NULL;
free(tool);
}
static const struct zwp_tablet_tool_v2_listener tablet_tool_listener = {
.removed = handle_tablet_tool_removed,
.done = handle_tablet_tool_done,
.type = handle_tablet_tool_type,
.hardware_serial = handle_tablet_tool_serial,
.hardware_id_wacom = handle_tablet_tool_id_wacom,
.capability = handle_tablet_tool_capability,
.proximity_in = handle_tablet_tool_proximity_in,
.proximity_out = handle_tablet_tool_proximity_out,
.down = handle_tablet_tool_down,
.up = handle_tablet_tool_up,
.motion = handle_tablet_tool_motion,
.pressure = handle_tablet_tool_pressure,
.distance = handle_tablet_tool_distance,
.tilt = handle_tablet_tool_tilt,
.rotation = handle_tablet_tool_rotation,
.slider = handle_tablet_tool_slider,
.wheel = handle_tablet_tool_wheel,
.button = handle_tablet_tool_button,
.frame = handle_tablet_tool_frame,
};
static void handle_tool_added(void *data,
struct zwp_tablet_seat_v2 *zwp_tablet_seat_v2,
struct zwp_tablet_tool_v2 *zwp_tablet_tool_v2) {
struct wlr_wl_seat *seat = data;
if (seat->zwp_tablet_tool_v2 != NULL) {
wlr_log(WLR_ERROR, "zwp_tablet_tool_v2 already present");
return;
}
wl_signal_init(&seat->wlr_tablet_tool.events.destroy);
struct tablet_tool *tool = calloc(1, sizeof(*tool));
if (tool == NULL) {
wlr_log_errno(WLR_ERROR, "failed to allocate tablet_tool");
zwp_tablet_tool_v2_destroy(zwp_tablet_tool_v2);
return;
}
tool->seat = seat;
clear_tablet_tool_values(tool);
seat->zwp_tablet_tool_v2 = zwp_tablet_tool_v2;
zwp_tablet_tool_v2_add_listener(seat->zwp_tablet_tool_v2, &tablet_tool_listener,
tool);
}
static void handle_tablet_name(void *data, struct zwp_tablet_v2 *zwp_tablet_v2,
const char *name) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet *tablet = &seat->wlr_tablet;
free(tablet->base.name);
tablet->base.name = strdup(name);
}
static void handle_tablet_id(void *data, struct zwp_tablet_v2 *zwp_tablet_v2,
uint32_t vid, uint32_t pid) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet *tablet = &seat->wlr_tablet;
tablet->base.vendor = vid;
tablet->base.product = pid;
}
static void handle_tablet_path(void *data, struct zwp_tablet_v2 *zwp_tablet_v2,
const char *path) {
struct wlr_wl_seat *seat = data;
struct wlr_tablet *tablet = &seat->wlr_tablet;
char **dst = wl_array_add(&tablet->paths, sizeof(char *));
*dst = strdup(path);
}
static void handle_tablet_done(void *data, struct zwp_tablet_v2 *zwp_tablet_v2) {
struct wlr_wl_seat *seat = data;
wl_signal_emit_mutable(&seat->backend->backend.events.new_input,
&seat->wlr_tablet.base);
}
static void handle_tablet_removed(void *data,
struct zwp_tablet_v2 *zwp_tablet_v2) {
struct wlr_wl_seat *seat = data;
wlr_tablet_finish(&seat->wlr_tablet);
zwp_tablet_v2_destroy(seat->zwp_tablet_v2);
seat->zwp_tablet_v2 = NULL;
}
static const struct zwp_tablet_v2_listener tablet_listener = {
.name = handle_tablet_name,
.id = handle_tablet_id,
.path = handle_tablet_path,
.done = handle_tablet_done,
.removed = handle_tablet_removed,
};
const struct wlr_tablet_impl wl_tablet_impl = {
.name = "wl-tablet-tool",
};
static void handle_tab_added(void *data,
struct zwp_tablet_seat_v2 *zwp_tablet_seat_v2,
struct zwp_tablet_v2 *zwp_tablet_v2) {
struct wlr_wl_seat *seat = data;
if (seat->zwp_tablet_v2 != NULL) {
wlr_log(WLR_ERROR, "zwp_tablet_v2 already present");
return;
}
seat->zwp_tablet_v2 = zwp_tablet_v2;
zwp_tablet_v2_add_listener(zwp_tablet_v2, &tablet_listener, seat);
wlr_tablet_init(&seat->wlr_tablet, &wl_tablet_impl, "wlr_tablet_v2");
}
static const struct zwp_tablet_seat_v2_listener tablet_seat_listener = {
.tablet_added = handle_tab_added,
.tool_added = handle_tool_added,
.pad_added = handle_pad_added,
};
void init_seat_tablet(struct wlr_wl_seat *seat) {
struct zwp_tablet_manager_v2 *manager = seat->backend->tablet_manager;
assert(manager);
/**
* TODO: multi tablet support
* The wlr_wl_seat should support multiple tablet_v2 devices, but for
* the sake of simplicity, it supports only one device of each.
* If this is a feature you want/need, please open an issue on the wlroots
* tracker here https://gitlab.freedesktop.org/wlroots/wlroots/-/issues
*/
seat->zwp_tablet_seat_v2 =
zwp_tablet_manager_v2_get_tablet_seat(manager, seat->wl_seat);
if (seat->zwp_tablet_seat_v2 == NULL) {
wlr_log(WLR_ERROR, "failed to get zwp_tablet_manager_v2 from seat '%s'",
seat->name);
return;
}
zwp_tablet_seat_v2_add_listener(seat->zwp_tablet_seat_v2,
&tablet_seat_listener, seat);
}
void finish_seat_tablet(struct wlr_wl_seat *seat) {
if (seat->zwp_tablet_v2 != NULL) {
wlr_tablet_finish(&seat->wlr_tablet);
zwp_tablet_v2_destroy(seat->zwp_tablet_v2);
}
if (seat->zwp_tablet_tool_v2 != NULL) {
struct tablet_tool *tool =
zwp_tablet_tool_v2_get_user_data(seat->zwp_tablet_tool_v2);
free(tool);
zwp_tablet_tool_v2_destroy(seat->zwp_tablet_tool_v2);
}
if (seat->zwp_tablet_pad_v2 != NULL) {
struct wlr_tablet_pad *tablet_pad = &seat->wlr_tablet_pad;
struct tablet_pad_group *group, *it;
wl_list_for_each_safe(group, it, &tablet_pad->groups, group.link) {
destroy_tablet_pad_group(group);
}
wlr_tablet_pad_finish(tablet_pad);
zwp_tablet_pad_v2_destroy(seat->zwp_tablet_pad_v2);
}
zwp_tablet_seat_v2_destroy(seat->zwp_tablet_seat_v2);
seat->zwp_tablet_seat_v2 = NULL;
}