Flesh out keyboard support in examples
This commit is contained in:
Drew DeVault
parent
e257afeb7e
commit
6bf7e095cf
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@ -7,6 +7,7 @@
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#include <unistd.h>
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#include <wayland-server.h>
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#include <wayland-server-protocol.h>
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#include <xkbcommon/xkbcommon.h>
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#include <GLES3/gl3.h>
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#include <wlr/render/matrix.h>
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#include <wlr/render/gles3.h>
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@ -18,10 +19,19 @@
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#include "cat.h"
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struct state {
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struct wl_list config;
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struct xkb_keymap *keymap;
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struct xkb_state *xkb_state;
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bool exit;
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struct wl_list keyboards;
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struct wl_listener input_add;
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struct wl_listener input_remove;
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struct wl_list outputs;
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struct wl_listener output_add;
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struct wl_listener output_remove;
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struct wl_list outputs;
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struct wl_list config;
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struct wlr_renderer *renderer;
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struct wlr_surface *cat_texture;
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};
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@ -33,6 +43,7 @@ struct output_state {
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struct state *state;
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struct wl_listener frame;
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float x_offs, y_offs;
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float x_vel, y_vel;
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};
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struct output_config {
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@ -41,6 +52,13 @@ struct output_config {
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struct wl_list link;
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};
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struct keyboard_state {
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struct state *state;
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struct wlr_input_device *device;
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struct wl_listener key;
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struct wl_list link;
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};
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static void output_frame(struct wl_listener *listener, void *data) {
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struct output_state *ostate = wl_container_of(listener, ostate, frame);
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struct wlr_output *output = ostate->output;
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@ -68,8 +86,8 @@ static void output_frame(struct wl_listener *listener, void *data) {
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(now.tv_nsec - ostate->last_frame.tv_nsec) / 1000000;
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float seconds = ms / 1000.0f;
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ostate->x_offs += 128 * seconds;
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ostate->y_offs += 128 * seconds;
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ostate->x_offs += ostate->x_vel * seconds;
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ostate->y_offs += ostate->y_vel * seconds;
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if (ostate->x_offs > 128) ostate->x_offs = 0;
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if (ostate->y_offs > 128) ostate->y_offs = 0;
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ostate->last_frame = now;
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@ -89,6 +107,7 @@ static void output_add(struct wl_listener *listener, void *data) {
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ostate->state = state;
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ostate->frame.notify = output_frame;
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ostate->x_offs = ostate->y_offs = 0;
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ostate->x_vel = ostate->y_vel = 128;
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struct output_config *conf;
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wl_list_for_each(conf, &state->config, link) {
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@ -118,9 +137,91 @@ static void output_remove(struct wl_listener *listener, void *data) {
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}
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}
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static int timer_done(void *data) {
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*(bool *)data = true;
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return 1;
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static void update_velocities(struct state *state, float x_diff, float y_diff) {
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struct output_state *ostate;
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wl_list_for_each(ostate, &state->outputs, link) {
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ostate->x_vel += x_diff;
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ostate->y_vel += y_diff;
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}
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}
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static void handle_keysym(struct state *state, xkb_keysym_t sym,
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enum wlr_key_state key_state) {
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char name[64];
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int l = xkb_keysym_get_name(sym, name, sizeof(name));
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if (l != -1 && l != sizeof(name)) {
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fprintf(stderr, "Key event: %s %s\n", name,
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key_state == WLR_KEY_PRESSED ? "pressed" : "released");
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}
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// NOTE: It may be better to simply refer to our key state during each frame
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// and make this change in pixels/sec^2
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if (key_state == WLR_KEY_PRESSED) {
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switch (sym) {
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case XKB_KEY_Escape:
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state->exit = true;
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break;
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case XKB_KEY_Left:
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update_velocities(state, -16, 0);
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break;
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case XKB_KEY_Right:
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update_velocities(state, 16, 0);
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break;
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case XKB_KEY_Up:
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update_velocities(state, 0, -16);
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break;
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case XKB_KEY_Down:
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update_velocities(state, 0, 16);
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break;
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}
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}
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}
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static void keyboard_key(struct wl_listener *listener, void *data) {
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struct wlr_keyboard_key *event = data;
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struct keyboard_state *kbstate = wl_container_of(listener, kbstate, key);
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uint32_t keycode = event->keycode + 8;
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const xkb_keysym_t *syms;
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int nsyms = xkb_state_key_get_syms(kbstate->state->xkb_state, keycode, &syms);
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for (int i = 0; i < nsyms; ++i) {
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handle_keysym(kbstate->state, syms[i], event->state);
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}
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xkb_state_update_key(kbstate->state->xkb_state, keycode,
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event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
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}
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void input_add(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct state *state = wl_container_of(listener, state, input_add);
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if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
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return;
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}
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struct keyboard_state *kbstate = calloc(sizeof(struct keyboard_state), 1);
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kbstate->device = device;
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kbstate->state = state;
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wl_list_init(&kbstate->key.link);
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kbstate->key.notify = keyboard_key;
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wl_signal_add(&device->keyboard->events.key, &kbstate->key);
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wl_list_insert(&state->keyboards, &kbstate->link);
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}
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void input_remove(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct state *state = wl_container_of(listener, state, input_add);
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if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
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return;
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}
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struct keyboard_state *kbstate = NULL, *_kbstate;
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wl_list_for_each(_kbstate, &state->keyboards, link) {
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if (_kbstate->device == device) {
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kbstate = kbstate;
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break;
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}
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}
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if (!kbstate) {
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return; // We are unfamiliar with this keyboard
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}
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wl_list_remove(&kbstate->link);
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wl_list_remove(&kbstate->key.link);
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}
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static void usage(const char *name, int ret) {
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@ -191,10 +292,38 @@ static void parse_args(int argc, char *argv[], struct wl_list *config) {
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int main(int argc, char *argv[]) {
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struct state state = {
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.exit = false,
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.input_add = { .notify = input_add },
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.input_remove = { .notify = input_remove },
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.output_add = { .notify = output_add },
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.output_remove = { .notify = output_remove }
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};
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struct xkb_rule_names rules;
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memset(&rules, 0, sizeof(rules));
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rules.rules = getenv("XKB_DEFAULT_RULES");
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rules.model = getenv("XKB_DEFAULT_MODEL");
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rules.layout = getenv("XKB_DEFAULT_LAYOUT");
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rules.variant = getenv("XKB_DEFAULT_VARIANT");
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rules.options = getenv("XKB_DEFAULT_OPTIONS");
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struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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if (!context) {
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fprintf(stderr, "Failed to create XKB context\n");
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return 1;
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}
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state.keymap =
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xkb_map_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
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if (!state.keymap) {
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fprintf(stderr, "Failed to create XKB keymap\n");
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return 1;
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}
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xkb_context_unref(context);
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state.xkb_state = xkb_state_new(state.keymap);
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wl_list_init(&state.keyboards);
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wl_list_init(&state.input_add.link);
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wl_list_init(&state.input_remove.link);
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wl_list_init(&state.outputs);
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wl_list_init(&state.config);
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wl_list_init(&state.output_add.link);
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@ -215,10 +344,11 @@ int main(int argc, char *argv[]) {
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return 1;
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}
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wl_signal_add(&wlr->events.input_add, &state.input_add);
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wl_signal_add(&wlr->events.input_remove, &state.input_remove);
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wl_signal_add(&wlr->events.output_add, &state.output_add);
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wl_signal_add(&wlr->events.output_remove, &state.output_remove);
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if (!wlr_backend_init(wlr)) {
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if (!wlr || !wlr_backend_init(wlr)) {
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printf("Failed to initialize backend, bailing out\n");
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return 1;
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}
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@ -228,17 +358,10 @@ int main(int argc, char *argv[]) {
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wlr_surface_attach_pixels(state.cat_texture, GL_RGB,
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cat_tex.width, cat_tex.height, cat_tex.pixel_data);
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bool done = false;
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struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
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timer_done, &done);
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wl_event_source_timer_update(timer, 30000);
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while (!done) {
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while (!state.exit) {
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wl_event_loop_dispatch(event_loop, 0);
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}
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wl_event_source_remove(timer);
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wlr_backend_destroy(wlr);
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wlr_session_finish(session);
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wlr_surface_destroy(state.cat_texture);
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@ -162,12 +162,6 @@ void input_remove(struct wl_listener *listener, void *data) {
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wl_list_remove(&kbstate->key.link);
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}
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static int timer_done(void *data) {
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struct state *state = data;
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state->exit = true;
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return 1;
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}
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int main() {
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struct state state = {
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.color = { 1.0, 0.0, 0.0 },
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@ -225,10 +219,6 @@ int main() {
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if (!wlr || !wlr_backend_init(wlr)) {
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return 1;
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}
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struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
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timer_done, &state);
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wl_event_source_timer_update(timer, 30000);
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while (!state.exit) {
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wl_event_loop_dispatch(event_loop, 0);
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