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#include <stdlib.h>
#include <wlr/config.h>
#include <wlr/interfaces/wlr_input_device.h>
#include <wlr/interfaces/wlr_keyboard.h>
#include <wlr/interfaces/wlr_pointer.h>
#include <wlr/util/log.h>
#include <xcb/xcb.h>
#ifdef __linux__
#include <linux/input-event-codes.h>
#elif __FreeBSD__
#include <dev/evdev/input-event-codes.h>
#endif
#ifdef WLR_HAS_XCB_XKB
#include <xcb/xkb.h>
#endif
#include "backend/x11.h"
#include "util/signal.h"
static uint32_t xcb_button_to_wl(uint32_t button) {
switch (button) {
case XCB_BUTTON_INDEX_1: return BTN_LEFT;
case XCB_BUTTON_INDEX_2: return BTN_MIDDLE;
case XCB_BUTTON_INDEX_3: return BTN_RIGHT;
// XXX: I'm not sure the scroll-wheel direction is right
case XCB_BUTTON_INDEX_4: return BTN_GEAR_UP;
case XCB_BUTTON_INDEX_5: return BTN_GEAR_DOWN;
default: return 0;
}
}
static void x11_handle_pointer_position(struct wlr_x11_output *output,
int16_t x, int16_t y, xcb_timestamp_t time) {
struct wlr_x11_backend *x11 = output->x11;
struct wlr_output *wlr_output = &output->wlr_output;
struct wlr_box box = { .x = x, .y = y };
wlr_box_transform(&box, wlr_output->transform, wlr_output->width,
wlr_output->height, &box);
box.x /= wlr_output->scale;
box.y /= wlr_output->scale;
struct wlr_box layout_box;
x11_output_layout_get_box(x11, &layout_box);
double ox = wlr_output->lx / (double)layout_box.width;
double oy = wlr_output->ly / (double)layout_box.height;
struct wlr_event_pointer_motion_absolute wlr_event = {
.device = &x11->pointer_dev,
.time_msec = time,
.x = box.x / (double)layout_box.width + ox,
.y = box.y / (double)layout_box.height + oy,
};
wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &wlr_event);
x11->time = time;
}
void x11_handle_input_event(struct wlr_x11_backend *x11,
xcb_generic_event_t *event) {
switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
case XCB_KEY_PRESS:
case XCB_KEY_RELEASE: {
xcb_key_press_event_t *ev = (xcb_key_press_event_t *)event;
struct wlr_event_keyboard_key key = {
.time_msec = ev->time,
.keycode = ev->detail - 8,
.state = event->response_type == XCB_KEY_PRESS ?
WLR_KEY_PRESSED : WLR_KEY_RELEASED,
.update_state = true,
};
// TODO use xcb-xkb for more precise modifiers state?
wlr_keyboard_notify_key(&x11->keyboard, &key);
x11->time = ev->time;
return;
}
case XCB_BUTTON_PRESS: {
xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
if (ev->detail == XCB_BUTTON_INDEX_4 ||
ev->detail == XCB_BUTTON_INDEX_5) {
double delta = (ev->detail == XCB_BUTTON_INDEX_4 ? -15 : 15);
struct wlr_event_pointer_axis axis = {
.device = &x11->pointer_dev,
.time_msec = ev->time,
.source = WLR_AXIS_SOURCE_WHEEL,
.orientation = WLR_AXIS_ORIENTATION_VERTICAL,
.delta = delta,
};
wlr_signal_emit_safe(&x11->pointer.events.axis, &axis);
x11->time = ev->time;
break;
}
}
/* fallthrough */
case XCB_BUTTON_RELEASE: {
xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
if (ev->detail != XCB_BUTTON_INDEX_4 &&
ev->detail != XCB_BUTTON_INDEX_5) {
struct wlr_event_pointer_button button = {
.device = &x11->pointer_dev,
.time_msec = ev->time,
.button = xcb_button_to_wl(ev->detail),
.state = event->response_type == XCB_BUTTON_PRESS ?
WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED,
};
wlr_signal_emit_safe(&x11->pointer.events.button, &button);
}
x11->time = ev->time;
return;
}
case XCB_MOTION_NOTIFY: {
xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
struct wlr_x11_output *output =
x11_output_from_window_id(x11, ev->event);
if (output != NULL) {
x11_handle_pointer_position(output, ev->event_x, ev->event_y, ev->time);
}
return;
}
default:
#ifdef WLR_HAS_XCB_XKB
if (x11->xkb_supported && event->response_type == x11->xkb_base_event) {
xcb_xkb_state_notify_event_t *ev =
(xcb_xkb_state_notify_event_t *)event;
wlr_keyboard_notify_modifiers(&x11->keyboard, ev->baseMods,
ev->latchedMods, ev->lockedMods, ev->lockedGroup);
return;
}
#endif
break;
}
}
const struct wlr_input_device_impl input_device_impl = { 0 };
void x11_update_pointer_position(struct wlr_x11_output *output,
xcb_timestamp_t time) {
struct wlr_x11_backend *x11 = output->x11;
xcb_query_pointer_cookie_t cookie =
xcb_query_pointer(x11->xcb_conn, output->win);
xcb_query_pointer_reply_t *reply =
xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
if (!reply) {
return;
}
x11_handle_pointer_position(output, reply->win_x, reply->win_y, time);
free(reply);
}
bool wlr_input_device_is_x11(struct wlr_input_device *wlr_dev) {
return wlr_dev->impl == &input_device_impl;
}
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