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input: add drawing tablet setup and event listeners

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Co-authored-by: Consolatis <35009135+Consolatis@users.noreply.github.com>
This commit is contained in:
Jens Peters 2023-12-01 22:12:00 +01:00 • committed by Johan Malm
parent 58e9724007
commit 2b96799a05
3 changed files with 141 additions and 0 deletions
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25
include/input/drawing_tablet.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef LABWC_DRAWING_TABLET_H
#define LABWC_DRAWING_TABLET_H
#include <wayland-server-core.h>
struct seat;
struct wlr_device;
struct wlr_input_device;
struct drawing_tablet {
struct seat *seat;
struct wlr_tablet *tablet;
double x, y;
struct {
struct wl_listener axis;
struct wl_listener tip;
struct wl_listener button;
struct wl_listener destroy;
// no interest in proximity events
} handlers;
};
void drawing_tablet_setup_handlers(struct seat *seat, struct wlr_input_device *wlr_input_device);
#endif /* LABWC_DRAWING_TABLET_H */

115
src/input/drawing_tablet.c Normal file
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// SPDX-License-Identifier: GPL-2.0-only
#include <assert.h>
#include <stdlib.h>
#include <linux/input-event-codes.h>
#include <wlr/types/wlr_tablet_pad.h>
#include <wlr/types/wlr_tablet_tool.h>
#include <wlr/util/log.h>
#include "common/macros.h"
#include "common/mem.h"
#include "config/rcxml.h"
#include "input/cursor.h"
#include "input/drawing_tablet.h"
#include "config/rcxml.h"
static void
handle_axis(struct wl_listener *listener, void *data)
{
struct wlr_tablet_tool_axis_event *ev = data;
struct drawing_tablet *tablet = ev->tablet->data;
if (ev->updated_axes & (WLR_TABLET_TOOL_AXIS_X | WLR_TABLET_TOOL_AXIS_Y)) {
if (ev->updated_axes & WLR_TABLET_TOOL_AXIS_X) {
tablet->x = ev->x;
}
if (ev->updated_axes & WLR_TABLET_TOOL_AXIS_Y) {
tablet->y = ev->y;
}
double x = tablet->x;
double y = tablet->y;
cursor_emulate_move_absolute(tablet->seat, &ev->tablet->base, x, y, ev->time_msec);
}
// Ignore other events
}
static void
handle_tip(struct wl_listener *listener, void *data)
{
struct wlr_tablet_tool_tip_event *ev = data;
struct drawing_tablet *tablet = ev->tablet->data;
cursor_emulate_button(tablet->seat,
BTN_LEFT,
ev->state == WLR_TABLET_TOOL_TIP_DOWN
? WLR_BUTTON_PRESSED
: WLR_BUTTON_RELEASED,
ev->time_msec);
}
static void
handle_button(struct wl_listener *listener, void *data)
{
struct wlr_tablet_tool_button_event *ev = data;
struct drawing_tablet *tablet = ev->tablet->data;
uint32_t button;
switch (ev->button) {
case BTN_STYLUS:
button = BTN_RIGHT;
break;
case BTN_STYLUS2:
button = BTN_MIDDLE;
break;
default:
wlr_log(WLR_DEBUG, "no button map target");
return;
}
cursor_emulate_button(tablet->seat, button, ev->state, ev->time_msec);
}
static void
handle_destroy(struct wl_listener *listener, void *data)
{
struct drawing_tablet *tablet =
wl_container_of(listener, tablet, handlers.destroy);
free(tablet);
}
static void
setup_pad(struct seat *seat, struct wlr_input_device *wlr_device)
{
wlr_log(WLR_INFO, "not setting up pad");
}
static void
setup_pen(struct seat *seat, struct wlr_input_device *wlr_device)
{
wlr_log(WLR_DEBUG, "setting up tablet");
struct drawing_tablet *tablet = znew(*tablet);
tablet->seat = seat;
tablet->tablet = wlr_tablet_from_input_device(wlr_device);
tablet->tablet->data = tablet;
tablet->x = 0.0;
tablet->y = 0.0;
CONNECT_SIGNAL(tablet->tablet, &tablet->handlers, axis);
CONNECT_SIGNAL(tablet->tablet, &tablet->handlers, tip);
CONNECT_SIGNAL(tablet->tablet, &tablet->handlers, button);
CONNECT_SIGNAL(wlr_device, &tablet->handlers, destroy);
}
void
drawing_tablet_setup_handlers(struct seat *seat, struct wlr_input_device *device)
{
switch (device->type) {
case WLR_INPUT_DEVICE_TABLET_PAD:
setup_pad(seat, device);
break;
case WLR_INPUT_DEVICE_TABLET_TOOL:
setup_pen(seat, device);
break;
default:
assert(false && "tried to add non-tablet as tablet");
}
}

1
src/input/meson.build
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labwc_sources += files( labwc_sources += files(
'cursor.c', 'cursor.c',
'drawing_tablet.c',
'gestures.c', 'gestures.c',
'input.c', 'input.c',
'keyboard.c', 'keyboard.c',