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Flesh out keyboard support in examples

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master
Drew DeVault 8 years ago
parent e257afeb7e
commit 6bf7e095cf
2 changed files with 140 additions and 27 deletions
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157
example/rotation.c
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@ -7,6 +7,7 @@
#include <unistd.h>
#include <wayland-server.h>
#include <wayland-server-protocol.h>
#include <xkbcommon/xkbcommon.h>
#include <GLES3/gl3.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles3.h>
@ -18,10 +19,19 @@
#include "cat.h"
struct 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;
struct wl_list outputs;
struct wl_list config;
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
};
@ -33,6 +43,7 @@ struct output_state {
struct state *state;
struct wl_listener frame;
float x_offs, y_offs;
float x_vel, y_vel;
};
struct output_config {
@ -41,6 +52,13 @@ 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;
@ -68,8 +86,8 @@ static void output_frame(struct wl_listener *listener, void *data) {
(now.tv_nsec - ostate->last_frame.tv_nsec) / 1000000;
float seconds = ms / 1000.0f;
ostate->x_offs += 128 * seconds;
ostate->y_offs += 128 * seconds;
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;
@ -89,6 +107,7 @@ static void output_add(struct wl_listener *listener, void *data) {
ostate->state = state;
ostate->frame.notify = output_frame;
ostate->x_offs = ostate->y_offs = 0;
ostate->x_vel = ostate->y_vel = 128;
struct output_config *conf;
wl_list_for_each(conf, &state->config, link) {
@ -118,9 +137,91 @@ static void output_remove(struct wl_listener *listener, void *data) {
}
}
static int timer_done(void *data) {
*(bool *)data = true;
return 1;
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_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");
}
// NOTE: It may be better to simply refer to our key state during each frame
// and make this change in pixels/sec^2
if (key_state == WLR_KEY_PRESSED) {
switch (sym) {
case XKB_KEY_Escape:
state->exit = true;
break;
case XKB_KEY_Left:
update_velocities(state, -16, 0);
break;
case XKB_KEY_Right:
update_velocities(state, 16, 0);
break;
case XKB_KEY_Up:
update_velocities(state, 0, -16);
break;
case XKB_KEY_Down:
update_velocities(state, 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) {
@ -191,10 +292,38 @@ 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);
wl_list_init(&state.config);
wl_list_init(&state.output_add.link);
@ -215,10 +344,11 @@ int main(int argc, char *argv[]) {
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_backend_init(wlr)) {
if (!wlr || !wlr_backend_init(wlr)) {
printf("Failed to initialize backend, bailing out\n");
return 1;
}
@ -228,17 +358,10 @@ int main(int argc, char *argv[]) {
wlr_surface_attach_pixels(state.cat_texture, GL_RGB,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
bool done = false;
struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
timer_done, &done);
wl_event_source_timer_update(timer, 30000);
while (!done) {
while (!state.exit) {
wl_event_loop_dispatch(event_loop, 0);
}
wl_event_source_remove(timer);
wlr_backend_destroy(wlr);
wlr_session_finish(session);
wlr_surface_destroy(state.cat_texture);

10
example/simple.c
Unescape View File

@ -162,12 +162,6 @@ void input_remove(struct wl_listener *listener, void *data) {
wl_list_remove(&kbstate->key.link);
}
static int timer_done(void *data) {
struct state *state = data;
state->exit = true;
return 1;
}
int main() {
struct state state = {
.color = { 1.0, 0.0, 0.0 },
@ -225,10 +219,6 @@ int main() {
if (!wlr || !wlr_backend_init(wlr)) {
return 1;
}
struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
timer_done, &state);
wl_event_source_timer_update(timer, 30000);
while (!state.exit) {
wl_event_loop_dispatch(event_loop, 0);

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