From 16175751d64c7f471a46239f02576a3e367afc7b Mon Sep 17 00:00:00 2001 From: Ilia Bozhinov Date: Thu, 29 Nov 2018 11:31:17 +0100 Subject: [PATCH] examples: add wlr_foreign_toplevel_management_v1 example --- examples/foreign-toplevel.c | 358 ++++++++++++++++++++++++++++++++++++ examples/meson.build | 4 + 2 files changed, 362 insertions(+) create mode 100644 examples/foreign-toplevel.c diff --git a/examples/foreign-toplevel.c b/examples/foreign-toplevel.c new file mode 100644 index 00000000..40ddbb09 --- /dev/null +++ b/examples/foreign-toplevel.c @@ -0,0 +1,358 @@ +#define _POSIX_C_SOURCE 200809L +#include +#include +#include +#include +#include +#include +#include "wlr-foreign-toplevel-management-unstable-v1-client-protocol.h" + +/** + * Usage: + * 1. foreign-toplevel + * Prints a list of opened toplevels + * 2. foreign-toplevel -f + * Focus the toplevel with the given id + * 3. foreign-toplevel -a + * Maximize the toplevel with the given id + * 4. foreign-toplevel -u + * Unmaximize the toplevel with the given id + * 5. foreign-toplevel -i + * Minimize the toplevel with the given id + * 6. foreign-toplevel -r + * Restore(unminimize) the toplevel with the given id + * 7. foreign-toplevel -c + * Close the toplevel with the given id + * 8. foreign-toplevel -m + * Continuously print changes to the list of opened toplevels. + * Can be used together with some of the previous options. + */ + +enum toplevel_state_field { + TOPLEVEL_STATE_MAXIMIZED = 1, + TOPLEVEL_STATE_MINIMIZED = 2, + TOPLEVEL_STATE_ACTIVATED = 4, + TOPLEVEL_STATE_INVALID = 8, +}; + +struct toplevel_state { + char *title; + char *app_id; + + uint32_t state; +}; + +static void copy_state(struct toplevel_state *current, + struct toplevel_state *pending) { + if (current->title && pending->title) { + free(current->title); + } + if (current->app_id && pending->app_id) { + free(current->app_id); + } + + if (pending->title) { + current->title = pending->title; + pending->title = NULL; + } + if (pending->app_id) { + current->app_id = pending->app_id; + pending->app_id = NULL; + } + + if (!(pending->state & TOPLEVEL_STATE_INVALID)) { + current->state = pending->state; + } + + pending->state = TOPLEVEL_STATE_INVALID; +} + +static uint32_t global_id = 0; +struct toplevel_v1 { + struct wl_list link; + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel; + + uint32_t id; + struct toplevel_state current, pending; +}; + +static void print_toplevel(struct toplevel_v1 *toplevel, bool print_endl) { + printf("-> %d. title=%s app_id=%s", toplevel->id, + toplevel->current.title ?: "(nil)", + toplevel->current.app_id ?: "(nil)"); + + if (print_endl) { + printf("\n"); + } +} + +static void print_toplevel_state(struct toplevel_v1 *toplevel, bool print_endl) { + if (toplevel->current.state & TOPLEVEL_STATE_MAXIMIZED) { + printf(" maximized"); + } else { + printf(" unmaximized"); + } + if (toplevel->current.state & TOPLEVEL_STATE_MINIMIZED) { + printf(" minimized"); + } else { + printf(" unminimized"); + } + if (toplevel->current.state & TOPLEVEL_STATE_ACTIVATED) { + printf(" active"); + } else { + printf(" inactive"); + } + + if (print_endl) { + printf("\n"); + } +} + +static void toplevel_handle_title(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel, + const char *title) { + struct toplevel_v1 *toplevel = data; + free(toplevel->pending.title); + toplevel->pending.title = strdup(title); +} + +static void toplevel_handle_app_id(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel, + const char *app_id) { + struct toplevel_v1 *toplevel = data; + free(toplevel->pending.app_id); + toplevel->pending.app_id = strdup(app_id); +} + +static void toplevel_handle_output_enter(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel, + struct wl_output *output) { + struct toplevel_v1 *toplevel = data; + print_toplevel(toplevel, false); + printf(" enter output %u\n", + (uint32_t)(size_t)wl_output_get_user_data(output)); +} + +static void toplevel_handle_output_leave(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel, + struct wl_output *output) { + struct toplevel_v1 *toplevel = data; + print_toplevel(toplevel, false); + printf(" leave output %u\n", + (uint32_t)(size_t)wl_output_get_user_data(output)); +} + +static uint32_t array_to_state(struct wl_array *array) { + uint32_t state = 0; + uint32_t *entry; + wl_array_for_each(entry, array) { + if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED) + state |= TOPLEVEL_STATE_MAXIMIZED; + if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED) + state |= TOPLEVEL_STATE_MINIMIZED; + if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED) + state |= TOPLEVEL_STATE_ACTIVATED; + } + + return state; +} + +static void toplevel_handle_state(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel, + struct wl_array *state) { + struct toplevel_v1 *toplevel = data; + toplevel->pending.state = array_to_state(state); +} + +static void toplevel_handle_done(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel) { + struct toplevel_v1 *toplevel = data; + bool state_changed = toplevel->current.state != toplevel->pending.state; + + copy_state(&toplevel->current, &toplevel->pending); + + print_toplevel(toplevel, !state_changed); + if (state_changed) { + print_toplevel_state(toplevel, true); + } +} + +static void toplevel_handle_closed(void *data, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel) { + struct toplevel_v1 *toplevel = data; + print_toplevel(toplevel, false); + printf(" closed\n"); + + zwlr_foreign_toplevel_handle_v1_destroy(zwlr_toplevel); +} + +static const struct zwlr_foreign_toplevel_handle_v1_listener toplevel_impl = { + .title = toplevel_handle_title, + .app_id = toplevel_handle_app_id, + .output_enter = toplevel_handle_output_enter, + .output_leave = toplevel_handle_output_leave, + .state = toplevel_handle_state, + .done = toplevel_handle_done, + .closed = toplevel_handle_closed, +}; + +static struct zwlr_foreign_toplevel_manager_v1 *toplevel_manager = NULL; +static struct wl_list toplevel_list; + +static void toplevel_manager_handle_toplevel(void *data, + struct zwlr_foreign_toplevel_manager_v1 *toplevel_manager, + struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel) { + struct toplevel_v1 *toplevel = calloc(1, sizeof(struct toplevel_v1)); + if (!toplevel) { + fprintf(stderr, "Failed to allocate memory for toplevel\n"); + return; + } + + toplevel->id = global_id++; + toplevel->zwlr_toplevel = zwlr_toplevel; + wl_list_insert(&toplevel_list, &toplevel->link); + + zwlr_foreign_toplevel_handle_v1_add_listener(zwlr_toplevel, &toplevel_impl, + toplevel); +} + +static void toplevel_manager_handle_finished(void *data, + struct zwlr_foreign_toplevel_manager_v1 *toplevel_manager) { + zwlr_foreign_toplevel_manager_v1_destroy(toplevel_manager); +} + +static const struct zwlr_foreign_toplevel_manager_v1_listener toplevel_manager_impl = { + .toplevel = toplevel_manager_handle_toplevel, + .finished = toplevel_manager_handle_finished, +}; + +struct wl_seat *seat = NULL; +static void handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) { + if (strcmp(interface, wl_output_interface.name) == 0) { + struct wl_output *output = wl_registry_bind(registry, name, + &wl_output_interface, version); + wl_output_set_user_data(output, (void*)(size_t)name); // assign some ID to the output + } else if (strcmp(interface, + zwlr_foreign_toplevel_manager_v1_interface.name) == 0) { + toplevel_manager = wl_registry_bind(registry, name, + &zwlr_foreign_toplevel_manager_v1_interface, 1); + + wl_list_init(&toplevel_list); + zwlr_foreign_toplevel_manager_v1_add_listener(toplevel_manager, + &toplevel_manager_impl, NULL); + } else if (strcmp(interface, wl_seat_interface.name) == 0 && seat == NULL) { + seat = wl_registry_bind(registry, name, &wl_seat_interface, version); + } +} + +static void handle_global_remove(void *data, struct wl_registry *registry, + uint32_t name) { + // who cares +} + +static const struct wl_registry_listener registry_listener = { + .global = handle_global, + .global_remove = handle_global_remove, +}; + +/* return NULL when id == -1 + * exit if the given ID cannot be found in the list of toplevels */ +static struct toplevel_v1 *toplevel_by_id_or_bail(int32_t id) { + if (id == -1) { + return NULL; + } + + struct toplevel_v1 *toplevel; + wl_list_for_each(toplevel, &toplevel_list, link) { + if (toplevel->id == (uint32_t)id) { + return toplevel; + } + } + + fprintf(stderr, "No toplevel with the given id: %d\n", id); + exit(EXIT_FAILURE); +} + +int main(int argc, char **argv) { + int focus_id = -1, close_id = -1; + int maximize_id = -1, unmaximize_id = -1; + int minimize_id = -1, restore_id = -1; + int one_shot = 1; + int c; + + // TODO maybe print usage with -h? + while ((c = getopt(argc, argv, "f:a:u:i:r:c:m")) != -1) { + switch (c) { + case 'f': + focus_id = atoi(optarg); + break; + case 'a': + maximize_id = atoi(optarg); + break; + case 'u': + unmaximize_id = atoi(optarg); + break; + case 'i': + minimize_id = atoi(optarg); + break; + case 'r': + restore_id = atoi(optarg); + break; + case 'c': + close_id = atoi(optarg); + break; + case 'm': + one_shot = 0; + break; + } + } + + struct wl_display *display = wl_display_connect(NULL); + if (display == NULL) { + fprintf(stderr, "Failed to create display\n"); + return EXIT_FAILURE; + } + + struct wl_registry *registry = wl_display_get_registry(display); + wl_registry_add_listener(registry, ®istry_listener, NULL); + wl_display_dispatch(display); + wl_display_roundtrip(display); + + if (toplevel_manager == NULL) { + fprintf(stderr, "wlr-foreign-toplevel not available\n"); + return EXIT_FAILURE; + } + wl_display_roundtrip(display); // load list of toplevels + wl_display_roundtrip(display); // load toplevel details + + struct toplevel_v1 *toplevel; + if ((toplevel = toplevel_by_id_or_bail(focus_id))) { + zwlr_foreign_toplevel_handle_v1_activate(toplevel->zwlr_toplevel, seat); + } + if ((toplevel = toplevel_by_id_or_bail(maximize_id))) { + zwlr_foreign_toplevel_handle_v1_set_maximized(toplevel->zwlr_toplevel); + } + if ((toplevel = toplevel_by_id_or_bail(unmaximize_id))) { + zwlr_foreign_toplevel_handle_v1_unset_maximized(toplevel->zwlr_toplevel); + } + if ((toplevel = toplevel_by_id_or_bail(minimize_id))) { + zwlr_foreign_toplevel_handle_v1_set_minimized(toplevel->zwlr_toplevel); + } + if ((toplevel = toplevel_by_id_or_bail(restore_id))) { + zwlr_foreign_toplevel_handle_v1_unset_minimized(toplevel->zwlr_toplevel); + } + if ((toplevel = toplevel_by_id_or_bail(close_id))) { + zwlr_foreign_toplevel_handle_v1_close(toplevel->zwlr_toplevel); + } + + wl_display_flush(display); + + if (one_shot == 0) { + while (wl_display_dispatch(display) != -1) { + // This space intentionally left blank + } + } + + return EXIT_SUCCESS; +} diff --git a/examples/meson.build b/examples/meson.build index cbf39347..589a7326 100644 --- a/examples/meson.build +++ b/examples/meson.build @@ -108,6 +108,10 @@ examples = { 'text-input': { 'src': 'text-input.c', 'dep': [wayland_cursor, wayland_client, wlr_protos, wlroots], + }, + 'foreign-toplevel': { + 'src': 'foreign-toplevel.c', + 'dep': [wayland_client, wlr_protos, wlroots], }, }