wlroots/examples/shared.c

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C
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#define _POSIX_C_SOURCE 200112L
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#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <limits.h>
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#include <xkbcommon/xkbcommon.h>
#include <wayland-server-protocol.h>
#include <wlr/backend.h>
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#include <wlr/backend/session.h>
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#include <wlr/backend/multi.h>
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#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
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#include <wlr/types/wlr_input_device.h>
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#include <wlr/util/log.h>
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#include "shared.h"
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static void keyboard_led_update(struct keyboard_state *kbstate) {
uint32_t leds = 0;
for (uint32_t i = 0; i < WLR_LED_LAST; ++i) {
if (xkb_state_led_index_is_active(kbstate->xkb_state, kbstate->leds[i])) {
leds |= (1 << i);
}
}
wlr_keyboard_led_update(kbstate->device->keyboard, leds);
}
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static void keyboard_key_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_keyboard_key *event = data;
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struct keyboard_state *kbstate = wl_container_of(listener, kbstate, key);
uint32_t keycode = event->keycode + 8;
enum wlr_key_state key_state = event->state;
const xkb_keysym_t *syms;
int nsyms = xkb_state_key_get_syms(kbstate->xkb_state, keycode, &syms);
xkb_state_update_key(kbstate->xkb_state, keycode,
event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
keyboard_led_update(kbstate);
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for (int i = 0; i < nsyms; ++i) {
xkb_keysym_t sym = syms[i];
char name[64];
int l = xkb_keysym_get_name(sym, name, sizeof(name));
if (l != -1 && l != sizeof(name)) {
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wlr_log(L_DEBUG, "Key event: %s %s", name,
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key_state == WLR_KEY_PRESSED ? "pressed" : "released");
}
if (kbstate->compositor->keyboard_key_cb) {
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kbstate->compositor->keyboard_key_cb(kbstate, event->keycode, sym,
key_state, event->time_usec);
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}
if (sym == XKB_KEY_Escape) {
wl_display_terminate(kbstate->compositor->display);
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} else if (key_state == WLR_KEY_PRESSED &&
sym >= XKB_KEY_XF86Switch_VT_1 &&
sym <= XKB_KEY_XF86Switch_VT_12) {
if (wlr_backend_is_multi(kbstate->compositor->backend)) {
struct wlr_session *session =
wlr_multi_get_session(kbstate->compositor->backend);
if (session) {
wlr_session_change_vt(session, sym - XKB_KEY_XF86Switch_VT_1 + 1);
}
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}
}
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}
}
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static void keyboard_add(struct wlr_input_device *device, struct compositor_state *state) {
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struct keyboard_state *kbstate = calloc(sizeof(struct keyboard_state), 1);
kbstate->device = device;
kbstate->compositor = state;
wl_list_init(&kbstate->key.link);
kbstate->key.notify = keyboard_key_notify;
wl_signal_add(&device->keyboard->events.key, &kbstate->key);
wl_list_insert(&state->keyboards, &kbstate->link);
struct xkb_rule_names rules;
memset(&rules, 0, sizeof(rules));
rules.rules = getenv("XKB_DEFAULT_RULES");
rules.model = getenv("XKB_DEFAULT_MODEL");
rules.layout = getenv("XKB_DEFAULT_LAYOUT");
rules.variant = getenv("XKB_DEFAULT_VARIANT");
rules.options = getenv("XKB_DEFAULT_OPTIONS");
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!context) {
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wlr_log(L_ERROR, "Failed to create XKB context");
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exit(1);
}
kbstate->keymap = xkb_map_new_from_names(
context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!kbstate->keymap) {
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wlr_log(L_ERROR, "Failed to create XKB keymap");
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exit(1);
}
xkb_context_unref(context);
kbstate->xkb_state = xkb_state_new(kbstate->keymap);
if (!kbstate->xkb_state) {
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wlr_log(L_ERROR, "Failed to create XKB state");
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exit(1);
}
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const char *led_names[3] = {
XKB_LED_NAME_NUM,
XKB_LED_NAME_CAPS,
XKB_LED_NAME_SCROLL
};
for (uint32_t i = 0; i < 3; ++i) {
kbstate->leds[i] = xkb_map_led_get_index(kbstate->keymap, led_names[i]);
}
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}
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static void pointer_motion_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_pointer_motion *event = data;
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struct pointer_state *pstate = wl_container_of(listener, pstate, motion);
if (pstate->compositor->pointer_motion_cb) {
pstate->compositor->pointer_motion_cb(pstate,
event->delta_x, event->delta_y);
}
}
static void pointer_motion_absolute_notify(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_motion_absolute *event = data;
struct pointer_state *pstate = wl_container_of(listener, pstate, motion_absolute);
if (pstate->compositor->pointer_motion_absolute_cb) {
pstate->compositor->pointer_motion_absolute_cb(pstate,
event->x_mm, event->y_mm);
}
}
static void pointer_button_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_pointer_button *event = data;
struct pointer_state *pstate = wl_container_of(listener, pstate, button);
if (pstate->compositor->pointer_button_cb) {
pstate->compositor->pointer_button_cb(pstate,
event->button, event->state);
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}
}
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static void pointer_axis_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_pointer_axis *event = data;
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struct pointer_state *pstate = wl_container_of(listener, pstate, axis);
if (pstate->compositor->pointer_axis_cb) {
pstate->compositor->pointer_axis_cb(pstate,
event->source, event->orientation, event->delta);
}
}
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static void pointer_add(struct wlr_input_device *device, struct compositor_state *state) {
struct pointer_state *pstate = calloc(sizeof(struct pointer_state), 1);
pstate->device = device;
pstate->compositor = state;
wl_list_init(&pstate->motion.link);
wl_list_init(&pstate->motion_absolute.link);
wl_list_init(&pstate->button.link);
wl_list_init(&pstate->axis.link);
pstate->motion.notify = pointer_motion_notify;
pstate->motion_absolute.notify = pointer_motion_absolute_notify;
pstate->button.notify = pointer_button_notify;
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pstate->axis.notify = pointer_axis_notify;
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wl_signal_add(&device->pointer->events.motion, &pstate->motion);
wl_signal_add(&device->pointer->events.motion_absolute, &pstate->motion_absolute);
wl_signal_add(&device->pointer->events.button, &pstate->button);
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wl_signal_add(&device->pointer->events.axis, &pstate->axis);
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wl_list_insert(&state->pointers, &pstate->link);
}
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static void touch_down_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_down *event = data;
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struct touch_state *tstate = wl_container_of(listener, tstate, down);
if (tstate->compositor->touch_down_cb) {
tstate->compositor->touch_down_cb(tstate, event->slot,
event->x_mm, event->y_mm, event->width_mm, event->height_mm);
}
}
static void touch_motion_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_motion *event = data;
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struct touch_state *tstate = wl_container_of(listener, tstate, motion);
if (tstate->compositor->touch_motion_cb) {
tstate->compositor->touch_motion_cb(tstate, event->slot,
event->x_mm, event->y_mm, event->width_mm, event->height_mm);
}
}
static void touch_up_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_up *event = data;
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struct touch_state *tstate = wl_container_of(listener, tstate, up);
if (tstate->compositor->touch_up_cb) {
tstate->compositor->touch_up_cb(tstate, event->slot);
}
}
static void touch_cancel_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_cancel *event = data;
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struct touch_state *tstate = wl_container_of(listener, tstate, cancel);
if (tstate->compositor->touch_cancel_cb) {
tstate->compositor->touch_cancel_cb(tstate, event->slot);
}
}
static void touch_add(struct wlr_input_device *device, struct compositor_state *state) {
struct touch_state *tstate = calloc(sizeof(struct touch_state), 1);
tstate->device = device;
tstate->compositor = state;
wl_list_init(&tstate->down.link);
wl_list_init(&tstate->motion.link);
wl_list_init(&tstate->up.link);
wl_list_init(&tstate->cancel.link);
tstate->down.notify = touch_down_notify;
tstate->motion.notify = touch_motion_notify;
tstate->up.notify = touch_up_notify;
tstate->cancel.notify = touch_cancel_notify;
wl_signal_add(&device->touch->events.down, &tstate->down);
wl_signal_add(&device->touch->events.motion, &tstate->motion);
wl_signal_add(&device->touch->events.up, &tstate->up);
wl_signal_add(&device->touch->events.cancel, &tstate->cancel);
wl_list_insert(&state->touch, &tstate->link);
}
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static void tablet_tool_axis_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_tablet_tool_axis *event = data;
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struct tablet_tool_state *tstate = wl_container_of(listener, tstate, axis);
if (tstate->compositor->tool_axis_cb) {
tstate->compositor->tool_axis_cb(tstate, event);
}
}
static void tablet_tool_proximity_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_tablet_tool_proximity *event = data;
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struct tablet_tool_state *tstate = wl_container_of(listener, tstate, proximity);
if (tstate->compositor->tool_proximity_cb) {
tstate->compositor->tool_proximity_cb(tstate, event->state);
}
}
static void tablet_tool_button_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_tablet_tool_button *event = data;
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struct tablet_tool_state *tstate = wl_container_of(listener, tstate, button);
if (tstate->compositor->tool_button_cb) {
tstate->compositor->tool_button_cb(tstate, event->button, event->state);
}
}
static void tablet_tool_add(struct wlr_input_device *device,
struct compositor_state *state) {
struct tablet_tool_state *tstate = calloc(sizeof(struct tablet_tool_state), 1);
tstate->device = device;
tstate->compositor = state;
wl_list_init(&tstate->axis.link);
wl_list_init(&tstate->proximity.link);
wl_list_init(&tstate->tip.link);
wl_list_init(&tstate->button.link);
tstate->axis.notify = tablet_tool_axis_notify;
tstate->proximity.notify = tablet_tool_proximity_notify;
//tstate->tip.notify = tablet_tool_tip_notify;
tstate->button.notify = tablet_tool_button_notify;
wl_signal_add(&device->tablet_tool->events.axis, &tstate->axis);
wl_signal_add(&device->tablet_tool->events.proximity, &tstate->proximity);
//wl_signal_add(&device->tablet_tool->events.tip, &tstate->tip);
wl_signal_add(&device->tablet_tool->events.button, &tstate->button);
wl_list_insert(&state->tablet_tools, &tstate->link);
}
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static void tablet_pad_button_notify(struct wl_listener *listener, void *data) {
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struct wlr_event_tablet_pad_button *event = data;
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struct tablet_pad_state *pstate = wl_container_of(listener, pstate, button);
if (pstate->compositor->pad_button_cb) {
pstate->compositor->pad_button_cb(pstate, event->button, event->state);
}
}
static void tablet_pad_add(struct wlr_input_device *device,
struct compositor_state *state) {
struct tablet_pad_state *pstate = calloc(sizeof(struct tablet_pad_state), 1);
pstate->device = device;
pstate->compositor = state;
wl_list_init(&pstate->button.link);
pstate->button.notify = tablet_pad_button_notify;
wl_signal_add(&device->tablet_pad->events.button, &pstate->button);
wl_list_insert(&state->tablet_pads, &pstate->link);
}
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static void input_add_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
struct compositor_state *state = wl_container_of(listener, state, input_add);
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switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
keyboard_add(device, state);
break;
case WLR_INPUT_DEVICE_POINTER:
pointer_add(device, state);
break;
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case WLR_INPUT_DEVICE_TOUCH:
touch_add(device, state);
break;
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case WLR_INPUT_DEVICE_TABLET_TOOL:
tablet_tool_add(device, state);
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break;
case WLR_INPUT_DEVICE_TABLET_PAD:
tablet_pad_add(device, state);
break;
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default:
break;
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}
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if (state->input_add_cb) {
state->input_add_cb(state, device);
}
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}
static void keyboard_remove(struct wlr_input_device *device, struct compositor_state *state) {
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struct keyboard_state *kbstate = NULL, *_kbstate;
wl_list_for_each(_kbstate, &state->keyboards, link) {
if (_kbstate->device == device) {
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kbstate = _kbstate;
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break;
}
}
if (!kbstate) {
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return;
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}
xkb_state_unref(kbstate->xkb_state);
xkb_map_unref(kbstate->keymap);
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wl_list_remove(&kbstate->link);
wl_list_remove(&kbstate->key.link);
free(kbstate);
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}
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static void pointer_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct pointer_state *pstate = NULL, *_pstate;
wl_list_for_each(_pstate, &state->pointers, link) {
if (_pstate->device == device) {
pstate = _pstate;
break;
}
}
if (!pstate) {
return;
}
wl_list_remove(&pstate->link);
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wl_list_remove(&pstate->motion.link);
wl_list_remove(&pstate->motion_absolute.link);
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wl_list_remove(&pstate->button.link);
wl_list_remove(&pstate->axis.link);
free(pstate);
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}
static void touch_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct touch_state *tstate = NULL, *_tstate;
wl_list_for_each(_tstate, &state->touch, link) {
if (_tstate->device == device) {
tstate = _tstate;
break;
}
}
if (!tstate) {
return;
}
wl_list_remove(&tstate->link);
wl_list_remove(&tstate->down.link);
wl_list_remove(&tstate->motion.link);
wl_list_remove(&tstate->up.link);
wl_list_remove(&tstate->cancel.link);
free(tstate);
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}
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static void tablet_tool_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct tablet_tool_state *tstate = NULL, *_tstate;
wl_list_for_each(_tstate, &state->tablet_tools, link) {
if (_tstate->device == device) {
tstate = _tstate;
break;
}
}
if (!tstate) {
return;
}
wl_list_remove(&tstate->link);
wl_list_remove(&tstate->axis.link);
wl_list_remove(&tstate->proximity.link);
//wl_list_remove(&tstate->tip.link);
wl_list_remove(&tstate->button.link);
free(tstate);
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}
static void tablet_pad_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct tablet_pad_state *pstate = NULL, *_pstate;
wl_list_for_each(_pstate, &state->tablet_pads, link) {
if (_pstate->device ==device) {
pstate = _pstate;
break;
}
}
if (!pstate) {
return;
}
wl_list_remove(&pstate->button.link);
free(pstate);
}
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static void input_remove_notify(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct compositor_state *state = wl_container_of(listener, state, input_remove);
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if (state->input_remove_cb) {
state->input_remove_cb(state, device);
}
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switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
keyboard_remove(device, state);
break;
case WLR_INPUT_DEVICE_POINTER:
pointer_remove(device, state);
break;
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case WLR_INPUT_DEVICE_TOUCH:
touch_remove(device, state);
break;
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case WLR_INPUT_DEVICE_TABLET_TOOL:
tablet_tool_remove(device, state);
break;
case WLR_INPUT_DEVICE_TABLET_PAD:
tablet_pad_remove(device, state);
break;
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default:
break;
}
}
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static void output_frame_notify(struct wl_listener *listener, void *data) {
struct output_state *output = wl_container_of(listener, output, frame);
struct compositor_state *compositor = output->compositor;
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
if (compositor->output_frame_cb) {
compositor->output_frame_cb(output, &now);
}
output->last_frame = now;
compositor->last_frame = now;
}
static void output_resolution_notify(struct wl_listener *listener, void *data) {
struct output_state *output = wl_container_of(listener, output, resolution);
struct compositor_state *compositor = output->compositor;
if (compositor->output_resolution_cb) {
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compositor->output_resolution_cb(compositor, output);
}
}
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static void output_add_notify(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct compositor_state *state = wl_container_of(listener, state, output_add);
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wlr_log(L_DEBUG, "Output '%s' added", output->name);
wlr_log(L_DEBUG, "%s %s %"PRId32"mm x %"PRId32"mm", output->make, output->model,
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output->phys_width, output->phys_height);
if (output->modes->length > 0) {
wlr_output_set_mode(output, output->modes->items[0]);
}
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struct output_state *ostate = calloc(1, sizeof(struct output_state));
clock_gettime(CLOCK_MONOTONIC, &ostate->last_frame);
ostate->output = output;
ostate->compositor = state;
ostate->frame.notify = output_frame_notify;
ostate->resolution.notify = output_resolution_notify;
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wl_list_init(&ostate->frame.link);
wl_signal_add(&output->events.frame, &ostate->frame);
wl_signal_add(&output->events.resolution, &ostate->resolution);
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wl_list_insert(&state->outputs, &ostate->link);
if (state->output_add_cb) {
state->output_add_cb(ostate);
}
}
static void output_remove_notify(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct compositor_state *state = wl_container_of(listener, state, output_remove);
struct output_state *ostate = NULL, *_ostate;
wl_list_for_each(_ostate, &state->outputs, link) {
if (_ostate->output == output) {
ostate = _ostate;
break;
}
}
if (!ostate) {
return; // We are unfamiliar with this output
}
if (state->output_remove_cb) {
state->output_remove_cb(ostate);
}
wl_list_remove(&ostate->link);
wl_list_remove(&ostate->frame.link);
wl_list_remove(&ostate->resolution.link);
free(ostate);
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}
void compositor_init(struct compositor_state *state) {
state->display = wl_display_create();
state->event_loop = wl_display_get_event_loop(state->display);
wl_list_init(&state->keyboards);
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wl_list_init(&state->pointers);
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wl_list_init(&state->touch);
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wl_list_init(&state->tablet_tools);
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wl_list_init(&state->tablet_pads);
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wl_list_init(&state->input_add.link);
state->input_add.notify = input_add_notify;
wl_list_init(&state->input_remove.link);
state->input_remove.notify = input_remove_notify;
wl_list_init(&state->outputs);
wl_list_init(&state->output_add.link);
state->output_add.notify = output_add_notify;
wl_list_init(&state->output_remove.link);
state->output_remove.notify = output_remove_notify;
struct wlr_backend *wlr = wlr_backend_autocreate(state->display);
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if (!wlr) {
exit(1);
}
wl_signal_add(&wlr->events.input_add, &state->input_add);
wl_signal_add(&wlr->events.input_remove, &state->input_remove);
wl_signal_add(&wlr->events.output_add, &state->output_add);
wl_signal_add(&wlr->events.output_remove, &state->output_remove);
state->backend = wlr;
clock_gettime(CLOCK_MONOTONIC, &state->last_frame);
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const char *socket = wl_display_add_socket_auto(state->display);
if (!socket) {
wlr_log_errno(L_ERROR, "Unable to open wayland socket");
wlr_backend_destroy(wlr);
exit(1);
}
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wlr_log(L_INFO, "Running compositor on wayland display '%s'", socket);
setenv("_WAYLAND_DISPLAY", socket, true);
if (!wlr_backend_start(state->backend)) {
wlr_log(L_ERROR, "Failed to start backend");
wlr_backend_destroy(wlr);
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exit(1);
}
}
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void compositor_fini(struct compositor_state *state) {
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wlr_backend_destroy(state->backend);
wl_display_destroy(state->display);
}