From b510c0f6c2b394de312879e3e45c63f60f06ae87 Mon Sep 17 00:00:00 2001 From: Timidger Date: Fri, 20 Apr 2018 12:11:51 -0400 Subject: [PATCH] Made rotation example standalone --- examples/rotation.c | 283 +++++++++++++++++++++++++++++++------------- 1 file changed, 201 insertions(+), 82 deletions(-) diff --git a/examples/rotation.c b/examples/rotation.c index 37def808..a7bbbf32 100644 --- a/examples/rotation.c +++ b/examples/rotation.c @@ -1,6 +1,7 @@ -#define _POSIX_C_SOURCE 199309L +#define _POSIX_C_SOURCE 200112L #define _XOPEN_SOURCE 500 #include +#include #include #include #include @@ -14,29 +15,48 @@ #include #include #include +#include +#include +#include #include #include #include -#include "support/shared.h" -#include "support/config.h" #include "cat.h" struct sample_state { - struct example_config *config; + struct wl_display *display; + struct wl_listener new_output; + struct wl_listener new_input; + struct timespec last_frame; struct wlr_renderer *renderer; struct wlr_texture *cat_texture; + struct wl_list outputs; + enum wl_output_transform transform; }; -struct output_data { +struct sample_output { + struct sample_state *sample; + struct wlr_output *output; + struct wl_listener frame; + struct wl_listener destroy; float x_offs, y_offs; float x_vel, y_vel; + struct wl_list link; }; -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; +struct sample_keyboard { + struct sample_state *sample; + struct wlr_input_device *device; + struct wl_listener key; + struct wl_listener destroy; +}; + +static void output_frame_notify(struct wl_listener *listener, void *data) { + struct sample_output *sample_output = wl_container_of(listener, sample_output, frame); + struct sample_state *sample = sample_output->sample; + struct wlr_output *wlr_output = sample_output->output; + struct timespec now; + clock_gettime(CLOCK_MONOTONIC, &now); int32_t width, height; wlr_output_effective_resolution(wlr_output, &width, &height); @@ -45,8 +65,8 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts wlr_renderer_begin(sample->renderer, wlr_output->width, wlr_output->height); wlr_renderer_clear(sample->renderer, (float[]){0.25f, 0.25f, 0.25f, 1}); - for (int y = -128 + (int)odata->y_offs; y < height; y += 128) { - for (int x = -128 + (int)odata->x_offs; x < width; x += 128) { + for (int y = -128 + (int)sample_output->y_offs; y < height; y += 128) { + for (int x = -128 + (int)sample_output->x_offs; x < width; x += 128) { wlr_render_texture(sample->renderer, sample->cat_texture, wlr_output->transform_matrix, x, y, 1.0f); } @@ -55,90 +75,191 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts wlr_renderer_end(sample->renderer); wlr_output_swap_buffers(wlr_output, NULL, NULL); - long ms = (ts->tv_sec - output->last_frame.tv_sec) * 1000 + - (ts->tv_nsec - output->last_frame.tv_nsec) / 1000000; + long ms = (now.tv_sec - sample->last_frame.tv_sec) * 1000 + + (now.tv_nsec - sample->last_frame.tv_nsec) / 1000000; float seconds = ms / 1000.0f; - odata->x_offs += odata->x_vel * seconds; - odata->y_offs += odata->y_vel * seconds; - if (odata->x_offs > 128) { - odata->x_offs = 0; + sample_output->x_offs += sample_output->x_vel * seconds; + sample_output->y_offs += sample_output->y_vel * seconds; + if (sample_output->x_offs > 128) { + sample_output->x_offs = 0; } - if (odata->y_offs > 128) { - odata->y_offs = 0; + if (sample_output->y_offs > 128) { + sample_output->y_offs = 0; } + sample->last_frame = now; } -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->outputs, link) { - if (strcmp(conf->name, output->output->name) == 0) { - wlr_output_set_transform(output->output, conf->transform); - break; - } - } -} - -static void handle_output_remove(struct output_state *output) { - free(output->data); -} - -static void update_velocities(struct compositor_state *state, +static void update_velocities(struct sample_state *sample, 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; + struct sample_output *sample_output; + wl_list_for_each(sample_output, &sample->outputs, link) { + sample_output->x_vel += x_diff; + sample_output->y_vel += y_diff; } } -static void handle_keyboard_key(struct keyboard_state *kbstate, - uint32_t keycode, xkb_keysym_t sym, enum wlr_key_state key_state, - uint64_t time_usec) { - // 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_Left: - update_velocities(kbstate->compositor, -16, 0); - break; - case XKB_KEY_Right: - update_velocities(kbstate->compositor, 16, 0); - break; - case XKB_KEY_Up: - update_velocities(kbstate->compositor, 0, -16); - break; - case XKB_KEY_Down: - update_velocities(kbstate->compositor, 0, 16); - break; +void output_remove_notify(struct wl_listener *listener, void *data) { + struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy); + wl_list_remove(&sample_output->frame.link); + wl_list_remove(&sample_output->destroy.link); + free(sample_output); +} + +void new_output_notify(struct wl_listener *listener, void *data) { + struct wlr_output *output = data; + struct sample_state *sample = wl_container_of(listener, sample, new_output); + struct sample_output *sample_output = calloc(1, sizeof(struct sample_output)); + if (wl_list_length(&output->modes) > 0) { + struct wlr_output_mode *mode = wl_container_of((&output->modes)->prev, mode, link); + wlr_output_set_mode(output, mode); + } + sample_output->x_offs = sample_output->y_offs = 0; + sample_output->x_vel = sample_output->y_vel = 128; + + wlr_output_set_transform(output, sample->transform); + sample_output->output = output; + sample_output->sample = sample; + wl_signal_add(&output->events.frame, &sample_output->frame); + sample_output->frame.notify = output_frame_notify; + wl_signal_add(&output->events.destroy, &sample_output->destroy); + sample_output->destroy.notify = output_remove_notify; + wl_list_insert(&sample->outputs, &sample_output->link); +} + +void keyboard_key_notify(struct wl_listener *listener, void *data) { + struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, key); + struct sample_state *sample = keyboard->sample; + struct wlr_event_keyboard_key *event = data; + uint32_t keycode = event->keycode + 8; + const xkb_keysym_t *syms; + int nsyms = xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state, + keycode, &syms); + for (int i = 0; i < nsyms; i++) { + xkb_keysym_t sym = syms[i]; + if (sym == XKB_KEY_Escape) { + wl_display_terminate(sample->display); + } + if (event->state == WLR_KEY_PRESSED) { + switch (sym) { + case XKB_KEY_Left: + update_velocities(sample, -16, 0); + break; + case XKB_KEY_Right: + update_velocities(sample, 16, 0); + break; + case XKB_KEY_Up: + update_velocities(sample, 0, -16); + break; + case XKB_KEY_Down: + update_velocities(sample, 0, 16); + break; + } } } } +void keyboard_destroy_notify(struct wl_listener *listener, void *data) { + struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy); + wl_list_remove(&keyboard->destroy.link); + wl_list_remove(&keyboard->key.link); + free(keyboard); +} + +void new_input_notify(struct wl_listener *listener, void *data) { + struct wlr_input_device *device = data; + struct sample_state *sample = wl_container_of(listener, sample, new_input); + struct sample_keyboard *keyboard; + struct xkb_rule_names rules; + struct xkb_context *context; + switch (device->type) { + case WLR_INPUT_DEVICE_KEYBOARD: + keyboard = calloc(1, sizeof(struct sample_keyboard)); + keyboard->device = device; + keyboard->sample = sample; + wl_signal_add(&device->events.destroy, &keyboard->destroy); + keyboard->destroy.notify = keyboard_destroy_notify; + wl_signal_add(&device->keyboard->events.key, &keyboard->key); + keyboard->key.notify = keyboard_key_notify; + 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"); + context = xkb_context_new(XKB_CONTEXT_NO_FLAGS); + if (!context) { + wlr_log(L_ERROR, "Failed to create XKB context"); + exit(1); + } + wlr_keyboard_set_keymap(device->keyboard, xkb_map_new_from_names(context, + &rules, XKB_KEYMAP_COMPILE_NO_FLAGS)); + xkb_context_unref(context); + break; + default: + break; + } +} + + int main(int argc, char *argv[]) { + int c; + enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL; + while ((c = getopt(argc, argv, "r:")) != -1) { + switch (c) { + case 'r': + if (strcmp(optarg, "90") == 0) { + transform = WL_OUTPUT_TRANSFORM_90; + } else if (strcmp(optarg, "180") == 0) { + transform = WL_OUTPUT_TRANSFORM_180; + } else if (strcmp(optarg, "270") == 0) { + transform = WL_OUTPUT_TRANSFORM_270; + } else if (strcmp(optarg, "flipped") == 0) { + transform = WL_OUTPUT_TRANSFORM_FLIPPED; + } else if (strcmp(optarg, "flipped-90") == 0) { + transform = WL_OUTPUT_TRANSFORM_FLIPPED_90; + } else if (strcmp(optarg, "flipped-180") == 0) { + transform = WL_OUTPUT_TRANSFORM_FLIPPED_180; + } else if (strcmp(optarg, "flipped-270") == 0) { + transform = WL_OUTPUT_TRANSFORM_FLIPPED_270; + } else { + wlr_log(L_ERROR, "got unknown transform value: %s", optarg); + } + break; + default: + break; + } + } wlr_log_init(L_DEBUG, NULL); - struct sample_state state = {0}; - state.config = parse_args(argc, argv); + struct wl_display *display = wl_display_create(); + struct sample_state state = { + .display = display, + .transform = transform + }; + wl_list_init(&state.outputs); - struct compositor_state compositor = { 0 }; - compositor.data = &state; - 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; - compositor_init(&compositor); + struct wlr_backend *wlr = wlr_backend_autocreate(display); + if (!wlr) { + exit(1); + } - state.renderer = wlr_backend_get_renderer(compositor.backend); + wl_signal_add(&wlr->events.new_output, &state.new_output); + state.new_output.notify = new_output_notify; + wl_signal_add(&wlr->events.new_input, &state.new_input); + state.new_input.notify = new_input_notify; + clock_gettime(CLOCK_MONOTONIC, &state.last_frame); + const char *socket = wl_display_add_socket_auto(display); + if (!socket) { + wlr_log_errno(L_ERROR, "Unable to open wayland socket"); + wlr_backend_destroy(wlr); + exit(1); + } + setenv("_WAYLAND_DISPLAY", socket, true); + + state.renderer = wlr_backend_get_renderer(wlr); if (!state.renderer) { wlr_log(L_ERROR, "Could not start compositor, OOM"); + wlr_backend_destroy(wlr); exit(EXIT_FAILURE); } state.cat_texture = wlr_texture_from_pixels(state.renderer, @@ -149,16 +270,14 @@ int main(int argc, char *argv[]) { exit(EXIT_FAILURE); } - if (!wlr_backend_start(compositor.backend)) { + if (!wlr_backend_start(wlr)) { wlr_log(L_ERROR, "Failed to start backend"); - wlr_backend_destroy(compositor.backend); + wlr_backend_destroy(wlr); exit(1); } - wl_display_run(compositor.display); + wl_display_run(display); wlr_texture_destroy(state.cat_texture); wlr_renderer_destroy(state.renderer); - compositor_fini(&compositor); - - example_config_destroy(state.config); + wl_display_destroy(display); }