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Simplify examples

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This commit is contained in:
Drew DeVault 2017-06-13 10:13:11 -04:00
parent 6bf7e095cf
commit 0dbfe56c89
5 changed files with 351 additions and 407 deletions
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2
example/CMakeLists.txt
View file

@ -6,6 +6,7 @@ include_directories(
add_executable(simple
simple.c
shared.c
)
target_link_libraries(simple
@ -16,6 +17,7 @@ target_link_libraries(simple
add_executable(rotation
rotation.c
shared.c
cat.c
)

273
example/rotation.c
View file

@ -16,32 +16,17 @@
#include <wlr/session.h>
#include <wlr/types.h>
#include <math.h>
#include "shared.h"
#include "cat.h"
struct state {
struct sample_state {
struct wl_list config;
struct xkb_keymap *keymap;
struct xkb_state *xkb_state;
bool exit;
struct wl_list keyboards;
struct wl_listener input_add;
struct wl_listener input_remove;
struct wl_list outputs;
struct wl_listener output_add;
struct wl_listener output_remove;
// TODO: Move renderer into shared
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
};
struct output_state {
struct timespec last_frame;
struct wl_list link;
struct wlr_output *output;
struct state *state;
struct wl_listener frame;
struct output_data {
float x_offs, y_offs;
float x_vel, y_vel;
};
@ -52,178 +37,95 @@ struct output_config {
struct wl_list link;
};
struct keyboard_state {
struct state *state;
struct wlr_input_device *device;
struct wl_listener key;
struct wl_list link;
};
static void output_frame(struct wl_listener *listener, void *data) {
struct output_state *ostate = wl_container_of(listener, ostate, frame);
struct wlr_output *output = ostate->output;
struct state *s = ostate->state;
static void handle_output_frame(struct output_state *output, struct timespec *ts) {
struct compositor_state *state = output->compositor;
struct sample_state *sample = state->data;
struct output_data *odata = output->data;
struct wlr_output *wlr_output = output->output;
int32_t width, height;
wlr_output_effective_resolution(output, &width, &height);
wlr_output_effective_resolution(wlr_output, &width, &height);
wlr_renderer_begin(s->renderer, output);
wlr_renderer_begin(sample->renderer, wlr_output);
float matrix[16];
for (int y = -128 + (int)ostate->y_offs; y < height; y += 128) {
for (int x = -128 + (int)ostate->x_offs; x < width; x += 128) {
wlr_surface_get_matrix(s->cat_texture, &matrix,
&output->transform_matrix, x, y);
wlr_render_with_matrix(s->renderer, s->cat_texture, &matrix);
for (int y = -128 + (int)odata->y_offs; y < height; y += 128) {
for (int x = -128 + (int)odata->x_offs; x < width; x += 128) {
wlr_surface_get_matrix(sample->cat_texture, &matrix,
&wlr_output->transform_matrix, x, y);
wlr_render_with_matrix(sample->renderer,
sample->cat_texture, &matrix);
}
}
wlr_renderer_end(s->renderer);
wlr_renderer_end(sample->renderer);
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
long ms = (now.tv_sec - ostate->last_frame.tv_sec) * 1000 +
(now.tv_nsec - ostate->last_frame.tv_nsec) / 1000000;
long ms = (ts->tv_sec - output->last_frame.tv_sec) * 1000 +
(ts->tv_nsec - output->last_frame.tv_nsec) / 1000000;
float seconds = ms / 1000.0f;
ostate->x_offs += ostate->x_vel * seconds;
ostate->y_offs += ostate->y_vel * seconds;
if (ostate->x_offs > 128) ostate->x_offs = 0;
if (ostate->y_offs > 128) ostate->y_offs = 0;
ostate->last_frame = now;
odata->x_offs += odata->x_vel * seconds;
odata->y_offs += odata->y_vel * seconds;
if (odata->x_offs > 128) odata->x_offs = 0;
if (odata->y_offs > 128) odata->y_offs = 0;
}
static void output_add(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct state *state = wl_container_of(listener, state, output_add);
fprintf(stderr, "Output '%s' added\n", output->name);
wlr_output_set_mode(output, output->modes->items[0]);
struct output_state *ostate = calloc(1, sizeof(struct output_state));
clock_gettime(CLOCK_MONOTONIC, &ostate->last_frame);
ostate->output = output;
ostate->state = state;
ostate->frame.notify = output_frame;
ostate->x_offs = ostate->y_offs = 0;
ostate->x_vel = ostate->y_vel = 128;
static void handle_output_add(struct output_state *output) {
struct output_data *odata = calloc(1, sizeof(struct output_data));
odata->x_offs = odata->y_offs = 0;
odata->x_vel = odata->y_vel = 128;
output->data = odata;
struct sample_state *state = output->compositor->data;
struct output_config *conf;
wl_list_for_each(conf, &state->config, link) {
if (strcmp(conf->name, output->name) == 0) {
wlr_output_transform(ostate->output, conf->transform);
break;
}
}
wl_list_init(&ostate->frame.link);
wl_signal_add(&output->events.frame, &ostate->frame);
wl_list_insert(&state->outputs, &ostate->link);
}
static void output_remove(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct state *state = wl_container_of(listener, state, output_remove);
struct output_state *ostate;
wl_list_for_each(ostate, &state->outputs, link) {
if (ostate->output == output) {
wl_list_remove(&ostate->link);
wl_list_remove(&ostate->frame.link);
free(ostate);
if (strcmp(conf->name, output->output->name) == 0) {
wlr_output_transform(output->output, conf->transform);
break;
}
}
}
static void update_velocities(struct state *state, float x_diff, float y_diff) {
struct output_state *ostate;
wl_list_for_each(ostate, &state->outputs, link) {
ostate->x_vel += x_diff;
ostate->y_vel += y_diff;
static void handle_output_remove(struct output_state *output) {
free(output->data);
}
static void update_velocities(struct compositor_state *state,
float x_diff, float y_diff) {
struct output_state *output;
wl_list_for_each(output, &state->outputs, link) {
struct output_data *odata = output->data;
odata->x_vel += x_diff;
odata->y_vel += y_diff;
}
}
static void handle_keysym(struct state *state, xkb_keysym_t sym,
enum wlr_key_state key_state) {
char name[64];
int l = xkb_keysym_get_name(sym, name, sizeof(name));
if (l != -1 && l != sizeof(name)) {
fprintf(stderr, "Key event: %s %s\n", name,
key_state == WLR_KEY_PRESSED ? "pressed" : "released");
}
static void handle_keyboard_key(struct keyboard_state *kbstate,
xkb_keysym_t sym, enum wlr_key_state key_state) {
// NOTE: It may be better to simply refer to our key state during each frame
// and make this change in pixels/sec^2
// Also, key repeat
if (key_state == WLR_KEY_PRESSED) {
switch (sym) {
case XKB_KEY_Escape:
state->exit = true;
kbstate->compositor->exit = true;
break;
case XKB_KEY_Left:
update_velocities(state, -16, 0);
update_velocities(kbstate->compositor, -16, 0);
break;
case XKB_KEY_Right:
update_velocities(state, 16, 0);
update_velocities(kbstate->compositor, 16, 0);
break;
case XKB_KEY_Up:
update_velocities(state, 0, -16);
update_velocities(kbstate->compositor, 0, -16);
break;
case XKB_KEY_Down:
update_velocities(state, 0, 16);
update_velocities(kbstate->compositor, 0, 16);
break;
}
}
}
static void keyboard_key(struct wl_listener *listener, void *data) {
struct wlr_keyboard_key *event = data;
struct keyboard_state *kbstate = wl_container_of(listener, kbstate, key);
uint32_t keycode = event->keycode + 8;
const xkb_keysym_t *syms;
int nsyms = xkb_state_key_get_syms(kbstate->state->xkb_state, keycode, &syms);
for (int i = 0; i < nsyms; ++i) {
handle_keysym(kbstate->state, syms[i], event->state);
}
xkb_state_update_key(kbstate->state->xkb_state, keycode,
event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
}
void input_add(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct state *state = wl_container_of(listener, state, input_add);
if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
return;
}
struct keyboard_state *kbstate = calloc(sizeof(struct keyboard_state), 1);
kbstate->device = device;
kbstate->state = state;
wl_list_init(&kbstate->key.link);
kbstate->key.notify = keyboard_key;
wl_signal_add(&device->keyboard->events.key, &kbstate->key);
wl_list_insert(&state->keyboards, &kbstate->link);
}
void input_remove(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct state *state = wl_container_of(listener, state, input_add);
if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
return;
}
struct keyboard_state *kbstate = NULL, *_kbstate;
wl_list_for_each(_kbstate, &state->keyboards, link) {
if (_kbstate->device == device) {
kbstate = kbstate;
break;
}
}
if (!kbstate) {
return; // We are unfamiliar with this keyboard
}
wl_list_remove(&kbstate->link);
wl_list_remove(&kbstate->key.link);
}
static void usage(const char *name, int ret) {
fprintf(stderr,
"usage: %s [-d <name> [-r <rotation> | -f]]*\n"
@ -291,82 +193,27 @@ static void parse_args(int argc, char *argv[], struct wl_list *config) {
}
int main(int argc, char *argv[]) {
struct state state = {
.exit = false,
.input_add = { .notify = input_add },
.input_remove = { .notify = input_remove },
.output_add = { .notify = output_add },
.output_remove = { .notify = output_remove }
};
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) {
fprintf(stderr, "Failed to create XKB context\n");
return 1;
}
state.keymap =
xkb_map_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!state.keymap) {
fprintf(stderr, "Failed to create XKB keymap\n");
return 1;
}
xkb_context_unref(context);
state.xkb_state = xkb_state_new(state.keymap);
wl_list_init(&state.keyboards);
wl_list_init(&state.input_add.link);
wl_list_init(&state.input_remove.link);
wl_list_init(&state.outputs);
struct sample_state state = { 0 };
struct compositor_state compositor;
wl_list_init(&state.config);
wl_list_init(&state.output_add.link);
wl_list_init(&state.output_remove.link);
parse_args(argc, argv, &state.config);
struct wl_display *display = wl_display_create();
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
struct wlr_session *session = wlr_session_start(display);
if (!session) {
return 1;
}
struct wlr_backend *wlr = wlr_backend_autocreate(display, session);
if (!wlr) {
return 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);
if (!wlr || !wlr_backend_init(wlr)) {
printf("Failed to initialize backend, bailing out\n");
return 1;
}
compositor_init(&compositor);
compositor.output_add_cb = handle_output_add;
compositor.output_remove_cb = handle_output_remove;
compositor.output_frame_cb = handle_output_frame;
compositor.keyboard_key_cb = handle_keyboard_key;
state.renderer = wlr_gles3_renderer_init();
state.cat_texture = wlr_render_surface_init(state.renderer);
wlr_surface_attach_pixels(state.cat_texture, GL_RGB,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
while (!state.exit) {
wl_event_loop_dispatch(event_loop, 0);
}
compositor.data = &state;
compositor_run(&compositor);
wlr_backend_destroy(wlr);
wlr_session_finish(session);
wlr_surface_destroy(state.cat_texture);
wlr_renderer_destroy(state.renderer);
wl_display_destroy(display);
struct output_config *ptr, *tmp;
wl_list_for_each_safe(ptr, tmp, &state.config, link) {

203
example/shared.c Normal file
View file

@ -0,0 +1,203 @@
#define _POSIX_C_SOURCE 199309L
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <xkbcommon/xkbcommon.h>
#include <wayland-server-protocol.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types.h>
#include "shared.h"
static void keyboard_key_notify(struct wl_listener *listener, void *data) {
struct wlr_keyboard_key *event = data;
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);
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)) {
fprintf(stderr, "Key event: %s %s\n", name,
key_state == WLR_KEY_PRESSED ? "pressed" : "released");
}
if (kbstate->compositor->keyboard_key_cb) {
kbstate->compositor->keyboard_key_cb(kbstate, sym, key_state);
}
}
xkb_state_update_key(kbstate->xkb_state, keycode,
event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
}
static void input_add_notify(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct compositor_state *state = wl_container_of(listener, state, input_add);
if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
return;
}
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) {
fprintf(stderr, "Failed to create XKB context\n");
exit(1);
}
kbstate->keymap = xkb_map_new_from_names(
context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!kbstate->keymap) {
fprintf(stderr, "Failed to create XKB keymap\n");
exit(1);
}
xkb_context_unref(context);
kbstate->xkb_state = xkb_state_new(kbstate->keymap);
if (!kbstate->xkb_state) {
fprintf(stderr, "Failed to create XKB state\n");
exit(1);
}
}
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_add);
if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
return;
}
struct keyboard_state *kbstate = NULL, *_kbstate;
wl_list_for_each(_kbstate, &state->keyboards, link) {
if (_kbstate->device == device) {
kbstate = kbstate;
break;
}
}
if (!kbstate) {
return; // We are unfamiliar with this keyboard
}
wl_list_remove(&kbstate->link);
wl_list_remove(&kbstate->key.link);
}
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_add_notify(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct compositor_state *state = wl_container_of(listener, state, output_add);
fprintf(stderr, "Output '%s' added\n", output->name);
fprintf(stderr, "%s %s %"PRId32"mm x %"PRId32"mm\n", output->make, output->model,
output->phys_width, output->phys_height);
wlr_output_set_mode(output, output->modes->items[0]);
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;
wl_list_init(&ostate->frame.link);
wl_signal_add(&output->events.frame, &ostate->frame);
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);
}
void compositor_init(struct compositor_state *state) {
memset(state, 0, sizeof(struct compositor_state));
state->display = wl_display_create();
state->event_loop = wl_display_get_event_loop(state->display);
state->session = wlr_session_start(state->display);
if (!state->session
|| !state->display
|| !state->event_loop) {
exit(1);
}
wl_list_init(&state->keyboards);
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, state->session);
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);
}
void compositor_run(struct compositor_state *state) {
if (!wlr_backend_init(state->backend)) {
fprintf(stderr, "Failed to initialize backend\n");
exit(1);
}
while (!state->exit) {
wl_event_loop_dispatch(state->event_loop, 0);
}
wlr_backend_destroy(state->backend);
wlr_session_finish(state->session);
wl_display_destroy(state->display);
}

61
example/shared.h Normal file
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@ -0,0 +1,61 @@
#ifndef _EXAMPLE_SHARED_H
#define _EXAMPLE_SHARED_H
#define _POSIX_C_SOURCE 199309L
#include <time.h>
#include <stdbool.h>
#include <xkbcommon/xkbcommon.h>
#include <wayland-server-protocol.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types.h>
struct output_state {
struct compositor_state *compositor;
struct wlr_output *output;
struct wl_listener frame;
struct timespec last_frame;
struct wl_list link;
void *data;
};
struct keyboard_state {
struct compositor_state *compositor;
struct wlr_input_device *device;
struct wl_listener key;
struct wl_list link;
struct xkb_keymap *keymap;
struct xkb_state *xkb_state;
void *data;
};
struct compositor_state {
void (*output_add_cb)(struct output_state *s);
void (*keyboard_add_cb)(struct keyboard_state *s);
void (*output_frame_cb)(struct output_state *s, struct timespec *ts);
void (*output_remove_cb)(struct output_state *s);
void (*keyboard_remove_cb)(struct keyboard_state *s);
void (*keyboard_key_cb)(struct keyboard_state *s, xkb_keysym_t sym,
enum wlr_key_state key_state);
struct wl_display *display;
struct wl_event_loop *event_loop;
struct wlr_backend *backend;
struct wlr_session *session;
struct wl_list keyboards;
struct wl_listener input_add;
struct wl_listener input_remove;
struct timespec last_frame;
struct wl_listener output_add;
struct wl_listener output_remove;
struct wl_list outputs;
bool exit;
void *data;
};
void compositor_init(struct compositor_state *state);
void compositor_run(struct compositor_state *state);
#endif

219
example/simple.c
View file

@ -10,220 +10,51 @@
#include <wlr/session.h>
#include <wlr/types.h>
#include <xkbcommon/xkbcommon.h>
#include "shared.h"
struct state {
struct sample_state {
float color[3];
int dec;
bool exit;
struct timespec last_frame;
struct xkb_keymap *keymap;
struct xkb_state *xkb_state;
struct wl_list keyboards;
struct wl_listener input_add;
struct wl_listener input_remove;
struct wl_listener output_add;
struct wl_listener output_remove;
struct wl_list outputs;
};
struct output_state {
struct state *state;
struct wlr_output *output;
struct wl_listener frame;
struct wl_list link;
};
void handle_output_frame(struct output_state *output, struct timespec *ts) {
struct compositor_state *state = output->compositor;
struct sample_state *sample = state->data;
struct keyboard_state {
struct state *state;
struct wlr_input_device *device;
struct wl_listener key;
struct wl_list link;
};
long ms = (ts->tv_sec - state->last_frame.tv_sec) * 1000 +
(ts->tv_nsec - state->last_frame.tv_nsec) / 1000000;
int inc = (sample->dec + 1) % 3;
void output_frame(struct wl_listener *listener, void *data) {
struct output_state *ostate = wl_container_of(listener, ostate, frame);
struct state *s = ostate->state;
sample->color[inc] += ms / 2000.0f;
sample->color[sample->dec] -= ms / 2000.0f;
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
long ms = (now.tv_sec - s->last_frame.tv_sec) * 1000 +
(now.tv_nsec - s->last_frame.tv_nsec) / 1000000;
int inc = (s->dec + 1) % 3;
s->color[inc] += ms / 2000.0f;
s->color[s->dec] -= ms / 2000.0f;
if (s->color[s->dec] < 0.0f) {
s->color[inc] = 1.0f;
s->color[s->dec] = 0.0f;
s->dec = inc;
if (sample->color[sample->dec] < 0.0f) {
sample->color[inc] = 1.0f;
sample->color[sample->dec] = 0.0f;
sample->dec = inc;
}
s->last_frame = now;
glClearColor(s->color[0], s->color[1], s->color[2], 1.0);
glClearColor(sample->color[0], sample->color[1], sample->color[2], 1.0);
glClear(GL_COLOR_BUFFER_BIT);
}
void output_add(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct state *state = wl_container_of(listener, state, output_add);
fprintf(stderr, "Output '%s' added\n", output->name);
fprintf(stderr, "%s %s %"PRId32"mm x %"PRId32"mm\n", output->make, output->model,
output->phys_width, output->phys_height);
wlr_output_set_mode(output, output->modes->items[0]);
struct output_state *ostate = calloc(1, sizeof(struct output_state));
ostate->output = output;
ostate->state = state;
ostate->frame.notify = output_frame;
wl_list_init(&ostate->frame.link);
wl_signal_add(&output->events.frame, &ostate->frame);
wl_list_insert(&state->outputs, &ostate->link);
}
void output_remove(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct 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
}
wl_list_remove(&ostate->link);
wl_list_remove(&ostate->frame.link);
}
static void handle_keysym(struct state *state, xkb_keysym_t sym,
enum wlr_key_state key_state) {
char name[64];
int l = xkb_keysym_get_name(sym, name, sizeof(name));
if (l != -1 && l != sizeof(name)) {
fprintf(stderr, "Key event: %s %s\n", name,
key_state == WLR_KEY_PRESSED ? "pressed" : "released");
}
static void handle_keyboard_key(struct keyboard_state *kbstate,
xkb_keysym_t sym, enum wlr_key_state key_state) {
if (sym == XKB_KEY_Escape) {
state->exit = true;
kbstate->compositor->exit = true;
}
}
static void keyboard_key(struct wl_listener *listener, void *data) {
struct wlr_keyboard_key *event = data;
struct keyboard_state *kbstate = wl_container_of(listener, kbstate, key);
uint32_t keycode = event->keycode + 8;
const xkb_keysym_t *syms;
int nsyms = xkb_state_key_get_syms(kbstate->state->xkb_state, keycode, &syms);
for (int i = 0; i < nsyms; ++i) {
handle_keysym(kbstate->state, syms[i], event->state);
}
xkb_state_update_key(kbstate->state->xkb_state, keycode,
event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
}
void input_add(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct state *state = wl_container_of(listener, state, input_add);
if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
return;
}
struct keyboard_state *kbstate = calloc(sizeof(struct keyboard_state), 1);
kbstate->device = device;
kbstate->state = state;
wl_list_init(&kbstate->key.link);
kbstate->key.notify = keyboard_key;
wl_signal_add(&device->keyboard->events.key, &kbstate->key);
wl_list_insert(&state->keyboards, &kbstate->link);
}
void input_remove(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct state *state = wl_container_of(listener, state, input_add);
if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
return;
}
struct keyboard_state *kbstate = NULL, *_kbstate;
wl_list_for_each(_kbstate, &state->keyboards, link) {
if (_kbstate->device == device) {
kbstate = kbstate;
break;
}
}
if (!kbstate) {
return; // We are unfamiliar with this keyboard
}
wl_list_remove(&kbstate->link);
wl_list_remove(&kbstate->key.link);
}
int main() {
struct state state = {
struct sample_state state = {
.color = { 1.0, 0.0, 0.0 },
.dec = 0,
.exit = false,
.input_add = { .notify = input_add },
.input_remove = { .notify = input_remove },
.output_add = { .notify = output_add },
.output_remove = { .notify = output_remove },
};
struct compositor_state compositor;
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) {
fprintf(stderr, "Failed to create XKB context\n");
return 1;
}
state.keymap =
xkb_map_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!state.keymap) {
fprintf(stderr, "Failed to create XKB keymap\n");
return 1;
}
xkb_context_unref(context);
state.xkb_state = xkb_state_new(state.keymap);
wl_list_init(&state.keyboards);
wl_list_init(&state.input_add.link);
wl_list_init(&state.input_remove.link);
wl_list_init(&state.outputs);
wl_list_init(&state.output_remove.link);
wl_list_init(&state.output_remove.link);
clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
struct wl_display *display = wl_display_create();
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
struct wlr_session *session = wlr_session_start(display);
if (!session) {
return 1;
}
struct wlr_backend *wlr = wlr_backend_autocreate(display, session);
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);
if (!wlr || !wlr_backend_init(wlr)) {
return 1;
}
while (!state.exit) {
wl_event_loop_dispatch(event_loop, 0);
}
wlr_backend_destroy(wlr);
wl_display_destroy(display);
compositor_init(&compositor);
compositor.output_frame_cb = handle_output_frame;
compositor.keyboard_key_cb = handle_keyboard_key;
compositor.data = &state;
compositor_run(&compositor);
}