diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/dmabuf-capture.c | 2 | ||||
| -rw-r--r-- | examples/input-method.c | 402 | ||||
| -rw-r--r-- | examples/layer-shell.c | 6 | ||||
| -rw-r--r-- | examples/meson.build | 20 | ||||
| -rw-r--r-- | examples/pointer-constraints.c | 260 | ||||
| -rw-r--r-- | examples/text-input.c | 394 |
6 files changed, 1083 insertions, 1 deletions
diff --git a/examples/dmabuf-capture.c b/examples/dmabuf-capture.c index 2c510b5a..abdb146a 100644 --- a/examples/dmabuf-capture.c +++ b/examples/dmabuf-capture.c @@ -12,7 +12,7 @@ #include <unistd.h> #include <pthread.h> #include <stdbool.h> -#include <libdrm/drm_fourcc.h> +#include <drm_fourcc.h> #include "wlr-export-dmabuf-unstable-v1-client-protocol.h" struct wayland_output { diff --git a/examples/input-method.c b/examples/input-method.c new file mode 100644 index 00000000..3e485d1c --- /dev/null +++ b/examples/input-method.c @@ -0,0 +1,402 @@ +#define _POSIX_C_SOURCE 200809L +#include <assert.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/timerfd.h> +#include <unistd.h> +#include <wayland-client.h> +#include <wayland-egl.h> +#include <wlr/render/egl.h> +#include "input-method-unstable-v2-client-protocol.h" +#include "text-input-unstable-v3-client-protocol.h" +#include "xdg-shell-client-protocol.h" + +const char usage[] = "Usage: input-method [seconds]\n\ +\n\ +Creates an input method using the input-method protocol.\n\ +\n\ +Whenever a text input is activated, this program sends a few sequences of\n\ +commands and checks the validity of the responses, relying on returned\n\ +surrounding text.\n\ +\n\ +The \"seconds\" argument is optional and defines the maximum delay between\n\ +stages."; + +struct input_method_state { + enum zwp_text_input_v3_change_cause change_cause; + struct { + enum zwp_text_input_v3_content_hint hint; + enum zwp_text_input_v3_content_purpose purpose; + } content_type; + struct { + char *text; + uint32_t cursor; + uint32_t anchor; + } surrounding; +}; + +static int sleeptime = 0; + +static struct wl_display *display = NULL; +static struct wl_compositor *compositor = NULL; +static struct wl_seat *seat = NULL; +static struct zwp_input_method_manager_v2 *input_method_manager = NULL; +static struct zwp_input_method_v2 *input_method = NULL; + +struct input_method_state pending; +struct input_method_state current; + +static uint32_t serial = 0; +bool active = false; +bool pending_active = false; +bool unavailable = false; +bool running = false; + +uint32_t update_stage = 0; + +int timer_fd = 0; + +static void print_state_diff(struct input_method_state previous, + struct input_method_state future) { + if (previous.content_type.hint != future.content_type.hint) { + char *strs[] = { "COMPLETION", "SPELLCHECK", "AUTO_CAPITALIZATION", + "LOWERCASE", "UPPERCASE", "TITLECASE", "HIDDEN_TEXT", + "SENSITIVE_DATA", "LATIN", "MULTILINE"}; + printf("content_type.hint:"); + uint32_t hint = future.content_type.hint; + if (!hint) { + printf(" NONE"); + } + for (unsigned i = 0; i < sizeof(strs) / sizeof(*strs); i++) { + if (hint & 1 << i) { + printf(" %s", strs[i]); + } + } + printf("\n"); + } + if (previous.content_type.purpose != future.content_type.purpose) { + char *strs[] = { "NORMAL", "ALPHA", "DIGITS", "NUMBER", "PHONE", "URL", + "EMAIL", "NAME", "PASSWORD", "PIN", "DATE", "TIME", "DATETIME", + "TERMINAL" }; + printf("content_type.purpose: %s\n", strs[future.content_type.purpose]); + } + if (!!previous.surrounding.text != !!future.surrounding.text + || (previous.surrounding.text && future.surrounding.text + && strcmp(previous.surrounding.text, future.surrounding.text) != 0) + || previous.surrounding.anchor != future.surrounding.anchor + || previous.surrounding.cursor != future.surrounding.cursor) { + char *text = future.surrounding.text; + if (!text) { + printf("Removed surrounding text\n"); + } else { + printf("Surrounding text: %s\n", text); + uint32_t anchor = future.surrounding.anchor; + uint32_t cursor = future.surrounding.cursor; + if (cursor == anchor) { + char *temp = strndup(text, cursor); + printf("Cursor after %d: %s\n", cursor, temp); + free(temp); + } else { + if (cursor > anchor) { + uint32_t tmp = anchor; + anchor = cursor; + cursor = tmp; + } + char *temp = strndup(&text[cursor], anchor - cursor); + printf("Selection: %s\n", temp); + free(temp); + } + } + } + if (previous.change_cause != future.change_cause) { + char *strs[] = { "INPUT_METHOD", "OTHER" }; + printf("Change cause: %s\n", strs[future.change_cause]); + } +} + +static void handle_content_type(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2, + uint32_t hint, uint32_t purpose) { + pending.content_type.hint = hint; + pending.content_type.purpose = purpose; +} + +static void handle_surrounding_text(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2, + const char *text, uint32_t cursor, uint32_t anchor) { + free(pending.surrounding.text); + pending.surrounding.text = strdup(text); + pending.surrounding.cursor = cursor; + pending.surrounding.anchor = anchor; +} + +static void handle_text_change_cause(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2, + uint32_t cause) { + pending.change_cause = cause; +} + +static void handle_activate(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2) { + pending_active = true; +} + +static void handle_deactivate(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2) { + pending_active = false; +} + +static void handle_unavailable(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2) { + printf("IM disappeared\n"); + zwp_input_method_v2_destroy(zwp_input_method_v2); + input_method = NULL; + running = false; +} + +static void im_activate(void *data, + struct zwp_input_method_v2 *id) { + update_stage = 0; +} + +static void timer_arm(unsigned seconds) { + printf("Timer armed\n"); + struct itimerspec spec = { + .it_interval = {0}, + .it_value = { + .tv_sec = seconds, + .tv_nsec = 0 + } + }; + if (timerfd_settime(timer_fd, 0, &spec, NULL)) { + fprintf(stderr, "Failed to arm timer: %s\n", strerror(errno)); + } +} + +static void do_updates() { + printf("Update %d\n", update_stage); + switch (update_stage) { + case 0: + // TODO: remember initial surrounding text + zwp_input_method_v2_set_preedit_string(input_method, "Preedit", 2, 4); + zwp_input_method_v2_commit(input_method, serial); + // don't expect an answer, preedit doesn't change anything visible + timer_arm(sleeptime); + update_stage++; + return; + case 1: + zwp_input_method_v2_set_preedit_string(input_method, "Præedit2", strlen("Pr"), strlen("Præed")); + zwp_input_method_v2_commit_string(input_method, "_Commit_"); + zwp_input_method_v2_commit(input_method, serial); + update_stage++; + break; + case 2: + if (strcmp(current.surrounding.text, "_Commit_") != 0) { + return; + } + zwp_input_method_v2_commit_string(input_method, "_CommitNoPreed_"); + zwp_input_method_v2_commit(input_method, serial); + timer_arm(sleeptime); + update_stage++; + break; + case 3: + if (strcmp(current.surrounding.text, "_Commit__CommitNoPreed_") != 0) { + return; + } + zwp_input_method_v2_commit_string(input_method, "_WaitNo_"); + zwp_input_method_v2_delete_surrounding_text(input_method, strlen("_CommitNoPreed_"), 0); + zwp_input_method_v2_commit(input_method, serial); + update_stage++; + break; + case 4: + if (strcmp(current.surrounding.text, "_Commit__WaitNo_") != 0) { + return; + } + zwp_input_method_v2_set_preedit_string(input_method, "PreedWithDel", strlen("Preed"), strlen("Preed")); + zwp_input_method_v2_delete_surrounding_text(input_method, strlen("_WaitNo_"), 0); + zwp_input_method_v2_commit(input_method, serial); + update_stage++; + break; + case 5: + if (strcmp(current.surrounding.text, "_Commit_") != 0) { + return; + } + zwp_input_method_v2_delete_surrounding_text(input_method, strlen("mit_"), 0); + zwp_input_method_v2_commit(input_method, serial); + update_stage++; + break; + case 6: + if (strcmp(current.surrounding.text, "_Com") != 0) { + printf("Failed\n"); + } + update_stage++; + break; + default: + printf("Submitted everything\n"); + return; + }; +} + +static void handle_timer() { + printf("Timer dispatched at %d\n", update_stage); + do_updates(); +} + +static void im_deactivate(void *data, + struct zwp_input_method_v2 *context) { + // No special action needed +} + +static void handle_done(void *data, + struct zwp_input_method_v2 *zwp_input_method_v2) { + bool prev_active = active; + serial++; + printf("Handle serial %d\n", serial); + if (active != pending_active) { + printf("Now %s\n", pending_active ? "active" : "inactive"); + } + if (pending_active) { + print_state_diff(current, pending); + } + active = pending_active; + free(current.surrounding.text); + struct input_method_state default_state = {0}; + current = pending; + pending = default_state; + if (active && !prev_active) { + im_activate(data, zwp_input_method_v2); + } else if (!active && prev_active) { + im_deactivate(data, zwp_input_method_v2); + } + + do_updates(); +} + +static const struct zwp_input_method_v2_listener im_listener = { + .activate = handle_activate, + .deactivate = handle_deactivate, + .surrounding_text = handle_surrounding_text, + .text_change_cause = handle_text_change_cause, + .content_type = handle_content_type, + .done = handle_done, + .unavailable = handle_unavailable, +}; + +static void handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) { + if (strcmp(interface, "wl_compositor") == 0) { + compositor = wl_registry_bind(registry, name, + &wl_compositor_interface, 1); + } else if (strcmp(interface, zwp_input_method_manager_v2_interface.name) == 0) { + input_method_manager = wl_registry_bind(registry, name, + &zwp_input_method_manager_v2_interface, 1); + } else if (strcmp(interface, wl_seat_interface.name) == 0) { + 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, +}; + +int main(int argc, char **argv) { + if (argc > 1) { + if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) { + printf(usage); + return 0; + } + sleeptime = atoi(argv[1]); + } + 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 (compositor == NULL) { + fprintf(stderr, "wl-compositor not available\n"); + return EXIT_FAILURE; + } + if (input_method_manager == NULL) { + fprintf(stderr, "input-method not available\n"); + return EXIT_FAILURE; + } + if (seat == NULL) { + fprintf(stderr, "seat not available\n"); + return EXIT_FAILURE; + } + + input_method = zwp_input_method_manager_v2_get_input_method( + input_method_manager, seat); + running = true; + zwp_input_method_v2_add_listener(input_method, &im_listener, NULL); + + int display_fd = wl_display_get_fd(display); + timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK); + if (timer_fd < 0) { + fprintf(stderr, "Failed to start timer\n"); + return EXIT_FAILURE; + } + int epoll = epoll_create1(EPOLL_CLOEXEC); + if (epoll < 0) { + fprintf(stderr, "Failed to start epoll\n"); + return EXIT_FAILURE; + } + + struct epoll_event epoll_display = { + .events = EPOLLIN | EPOLLOUT, + .data = {.fd = display_fd}, + }; + if (epoll_ctl(epoll, EPOLL_CTL_ADD, display_fd, &epoll_display)) { + fprintf(stderr, "Failed to epoll display\n"); + return EXIT_FAILURE; + } + + wl_display_roundtrip(display); // timer may be armed here + + struct epoll_event epoll_timer = { + .events = EPOLLIN, + .data = {.fd = timer_fd}, + }; + if (epoll_ctl(epoll, EPOLL_CTL_ADD, timer_fd, &epoll_timer)) { + fprintf(stderr, "Failed to epoll timer\n"); + return EXIT_FAILURE; + } + + timer_arm(2); + + struct epoll_event caught; + while (epoll_wait(epoll, &caught, 1, -1)) { + if (!running) { + printf("Exiting\n"); + return EXIT_SUCCESS; + } + if (caught.data.fd == display_fd) { + if (wl_display_dispatch(display) == -1) { + break; + } + } else if (caught.data.fd == timer_fd) { + uint64_t expirations; + ssize_t n = read(timer_fd, &expirations, sizeof(expirations)); + assert(n >= 0); + handle_timer(); + } else { + printf("Unknown source\n"); + } + } + return EXIT_SUCCESS; +} diff --git a/examples/layer-shell.c b/examples/layer-shell.c index f56825c3..114b98f6 100644 --- a/examples/layer-shell.c +++ b/examples/layer-shell.c @@ -596,10 +596,16 @@ int main(int argc, char **argv) { assert(cursor_theme); struct wl_cursor *cursor = wl_cursor_theme_get_cursor(cursor_theme, "crosshair"); + if (cursor == NULL) { + cursor = wl_cursor_theme_get_cursor(cursor_theme, "left_ptr"); + } assert(cursor); cursor_image = cursor->images[0]; cursor = wl_cursor_theme_get_cursor(cursor_theme, "tcross"); + if (cursor == NULL) { + cursor = wl_cursor_theme_get_cursor(cursor_theme, "left_ptr"); + } assert(cursor); popup_cursor_image = cursor->images[0]; diff --git a/examples/meson.build b/examples/meson.build index b5ad6c98..369c7049 100644 --- a/examples/meson.build +++ b/examples/meson.build @@ -6,6 +6,13 @@ libavutil = dependency('libavutil', version: '>=56.14.100', required: false) libavcodec = dependency('libavcodec', version: '>=58.18.100', required: false) libavformat = dependency('libavformat', version: '>=58.12.100', required: false) +# epoll is a separate library in FreeBSD +if host_machine.system() == 'freebsd' + libepoll = [dependency('epoll-shim')] +else + libepoll = [] +endif + # Small hack until https://github.com/mesonbuild/meson/pull/3386/ is merged foreach dep : ['libpng', 'libavutil', 'libavcodec', 'libavformat'] if not get_variable(dep).found() @@ -70,12 +77,17 @@ examples = { 'src': 'gamma-control.c', 'dep': [wayland_client, wayland_cursor, wlr_protos, wlroots], }, + 'pointer-constraints': { + 'src': 'pointer-constraints.c', + 'dep': [wayland_client, wlr_protos, wlroots], + }, 'dmabuf-capture': { 'src': 'dmabuf-capture.c', 'dep': [ libavcodec, libavformat, libavutil, + drm.partial_dependency(compile_args: true), # <drm_fourcc.h> threads, wayland_client, wlr_protos, @@ -90,6 +102,14 @@ examples = { 'src': 'toplevel-decoration.c', 'dep': [wayland_client, wlr_protos, wlroots], }, + 'input-method': { + 'src': 'input-method.c', + 'dep': [wayland_client, wlr_protos, wlroots] + libepoll, + }, + 'text-input': { + 'src': 'text-input.c', + 'dep': [wayland_cursor, wayland_client, wlr_protos, wlroots], + }, } foreach name, info : examples diff --git a/examples/pointer-constraints.c b/examples/pointer-constraints.c new file mode 100644 index 00000000..1df9f6ce --- /dev/null +++ b/examples/pointer-constraints.c @@ -0,0 +1,260 @@ +#include <GLES2/gl2.h> +#include <linux/input-event-codes.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wayland-client.h> +#include <wayland-egl.h> +#include <wlr/render/egl.h> +#include "xdg-shell-client-protocol.h" +#include "pointer-constraints-unstable-v1-client-protocol.h" + +static int width = 512, height = 512; + +static struct wl_compositor *compositor = NULL; +static struct wl_seat *seat = NULL; +static struct xdg_wm_base *wm_base = NULL; +static struct zwp_pointer_constraints_v1 *pointer_constraints = NULL; + +struct wlr_egl egl; +struct wl_egl_window *egl_window; +struct wlr_egl_surface *egl_surface; +struct zwp_locked_pointer_v1* locked_pointer; +struct zwp_confined_pointer_v1* confined_pointer; + +enum { + REGION_TYPE_NONE, + REGION_TYPE_DISJOINT, + REGION_TYPE_JOINT, + REGION_TYPE_MAX +} region_type = REGION_TYPE_NONE; + +struct wl_region *regions[3]; + +static void draw(void) { + eglMakeCurrent(egl.display, egl_surface, egl_surface, egl.context); + + float color[] = {1.0, 1.0, 0.0, 1.0}; + + glViewport(0, 0, width, height); + glClearColor(color[0], color[1], color[2], 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + eglSwapBuffers(egl.display, egl_surface); +} + +static void pointer_handle_button(void *data, struct wl_pointer *pointer, + uint32_t serial, uint32_t time, uint32_t button, uint32_t state_w) { + struct wl_surface *surface = data; + + if (button == BTN_LEFT && state_w == WL_POINTER_BUTTON_STATE_PRESSED) { + region_type = (region_type + 1) % REGION_TYPE_MAX; + + if (locked_pointer) { + zwp_locked_pointer_v1_set_region(locked_pointer, + regions[region_type]); + } else if (confined_pointer) { + zwp_confined_pointer_v1_set_region(confined_pointer, + regions[region_type]); + } + + wl_surface_commit(surface); + } +} + +static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer, + uint32_t serial, struct wl_surface *surface, + wl_fixed_t surface_x, wl_fixed_t surface_y) { + // This space intentionally left blank +} + +static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer, + uint32_t serial, struct wl_surface *surface) { + // This space intentionally left blank +} + +static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer, + uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) { + // This space intentionally left blank +} + +static void pointer_handle_axis(void *data, struct wl_pointer *wl_pointer, + uint32_t time, uint32_t axis, wl_fixed_t value) { + // This space intentionally left blank +} + +static void pointer_handle_frame(void *data, struct wl_pointer *wl_pointer) { + // This space intentionally left blank +} + +static void pointer_handle_axis_source(void *data, + struct wl_pointer *wl_pointer, uint32_t axis_source) { + // This space intentionally left blank +} + +static void pointer_handle_axis_stop(void *data, + struct wl_pointer *wl_pointer, uint32_t time, uint32_t axis) { + // This space intentionally left blank +} + +static void pointer_handle_axis_discrete(void *data, + struct wl_pointer *wl_pointer, uint32_t axis, int32_t discrete) { + // This space intentionally left blank +} + +static const struct wl_pointer_listener pointer_listener = { + .enter = pointer_handle_enter, + .leave = pointer_handle_leave, + .motion = pointer_handle_motion, + .button = pointer_handle_button, + .axis = pointer_handle_axis, + .frame = pointer_handle_frame, + .axis_source = pointer_handle_axis_source, + .axis_stop = pointer_handle_axis_stop, + .axis_discrete = pointer_handle_axis_discrete, +}; + +static void xdg_surface_handle_configure(void *data, + struct xdg_surface *xdg_surface, uint32_t serial) { + xdg_surface_ack_configure(xdg_surface, serial); + wl_egl_window_resize(egl_window, width, height, 0, 0); + draw(); +} + +static const struct xdg_surface_listener xdg_surface_listener = { + .configure = xdg_surface_handle_configure, +}; + +static void xdg_toplevel_handle_configure(void *data, + struct xdg_toplevel *xdg_toplevel, int32_t w, int32_t h, + struct wl_array *states) { + width = w; + height = h; +} + +static void xdg_toplevel_handle_close(void *data, + struct xdg_toplevel *xdg_toplevel) { + exit(EXIT_SUCCESS); +} + +static const struct xdg_toplevel_listener xdg_toplevel_listener = { + .configure = xdg_toplevel_handle_configure, + .close = xdg_toplevel_handle_close, +}; + +static void handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) { + if (strcmp(interface, wl_compositor_interface.name) == 0) { + compositor = wl_registry_bind(registry, name, + &wl_compositor_interface, 1); + } else if (strcmp(interface, xdg_wm_base_interface.name) == 0) { + wm_base = wl_registry_bind(registry, name, &xdg_wm_base_interface, 1); + } else if (strcmp(interface, wl_seat_interface.name) == 0) { + seat = wl_registry_bind(registry, name, &wl_seat_interface, version); + } else if (strcmp(interface, + zwp_pointer_constraints_v1_interface.name) == 0) { + pointer_constraints = wl_registry_bind(registry, name, + &zwp_pointer_constraints_v1_interface, version); + } +} + +static const struct wl_registry_listener registry_listener = { + .global = handle_global, + .global_remove = NULL, +}; + +int main(int argc, char **argv) { + if (argc != 4) { + goto invalid_args; + } + + bool lock; + if (strcmp(argv[1], "lock") == 0) { + lock = true; + } else if (strcmp(argv[1], "confine") == 0) { + lock = false; + } else { + goto invalid_args; + } + + enum zwp_pointer_constraints_v1_lifetime lifetime; + if (strcmp(argv[2], "oneshot") == 0) { + lifetime = ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_ONESHOT; + } else if (strcmp(argv[2], "persistent") == 0) { + lifetime = ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT; + } else { + goto invalid_args; + } + + if (strcmp(argv[3], "no-region") == 0) { + region_type = REGION_TYPE_NONE; + } else if (strcmp(argv[3], "disjoint-region") == 0) { + region_type = REGION_TYPE_DISJOINT; + } else if (strcmp(argv[3], "joint-region") == 0) { + region_type = REGION_TYPE_JOINT; + } + + struct wl_display *display = wl_display_connect(NULL); + + 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); + + struct wl_region *disjoint_region = wl_compositor_create_region(compositor); + wl_region_add(disjoint_region, 0, 0, 255, 256); + wl_region_add(disjoint_region, 257, 0, 255, 256); + regions[REGION_TYPE_DISJOINT] = disjoint_region; + + struct wl_region *joint_region = wl_compositor_create_region(compositor); + wl_region_add(joint_region, 0, 0, 256, 256); + wl_region_add(joint_region, 256, 0, 256, 256); + wl_region_add(joint_region, 256, 256, 256, 256); + regions[REGION_TYPE_JOINT] = joint_region; + + wlr_egl_init(&egl, EGL_PLATFORM_WAYLAND_EXT, display, NULL, + WL_SHM_FORMAT_ARGB8888); + + struct wl_surface *surface = wl_compositor_create_surface(compositor); + struct xdg_surface *xdg_surface = + xdg_wm_base_get_xdg_surface(wm_base, surface); + struct xdg_toplevel *xdg_toplevel = xdg_surface_get_toplevel(xdg_surface); + + xdg_surface_add_listener(xdg_surface, &xdg_surface_listener, NULL); + xdg_toplevel_add_listener(xdg_toplevel, &xdg_toplevel_listener, NULL); + + struct wl_pointer *pointer = wl_seat_get_pointer(seat); + wl_pointer_add_listener(pointer, &pointer_listener, surface); + + if (lock) { + locked_pointer = zwp_pointer_constraints_v1_lock_pointer( + pointer_constraints, surface, pointer, + regions[region_type], lifetime); + + zwp_locked_pointer_v1_set_cursor_position_hint(locked_pointer, + wl_fixed_from_int(128), wl_fixed_from_int(128)); + } else { + confined_pointer = zwp_pointer_constraints_v1_confine_pointer( + pointer_constraints, surface, pointer, + regions[region_type], lifetime); + } + + wl_surface_commit(surface); + + egl_window = wl_egl_window_create(surface, width, height); + egl_surface = wlr_egl_create_surface(&egl, egl_window); + + wl_display_roundtrip(display); + + draw(); + + while (wl_display_dispatch(display) != -1) {} + + return EXIT_SUCCESS; + +invalid_args: + fprintf(stderr, "pointer-constraints <lock | confine> " + "<oneshot | persistent> " + "<no-region | disjoint-rejoin | joint-region>\n"); + return EXIT_FAILURE; +} diff --git a/examples/text-input.c b/examples/text-input.c new file mode 100644 index 00000000..3ccd99a0 --- /dev/null +++ b/examples/text-input.c @@ -0,0 +1,394 @@ +#define _POSIX_C_SOURCE 200809L +#include <GLES2/gl2.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wayland-client.h> +#include <wayland-egl.h> +#include <wlr/render/egl.h> +#include "text-input-unstable-v3-client-protocol.h" +#include "xdg-shell-client-protocol.h" + +const char usage[] = "Usage: text-input [seconds [width height]]\n\ +\n\ +Creates a xdg-toplevel using the text-input protocol.\n\ +It will be solid black when it has no text input focus, yellow when it\n\ +has focus, and red when it was notified that the focus moved away\n\ +but still didn't give up the text input ability.\n\ +\n\ +The \"seconds\" argument is optional and defines the delay between getting\n\ +notified of lost focus and releasing text input.\n\ +\n\ +The \"width\" and \"height\" arguments define the window shape.\n\ +\n\ +The console will print the internal state of the text field:\n\ +- the text in the 1st line\n\ +- \".\" under each preedit character\n\ +- \"_\" under each selected preedit character\n\ +- \"|\" at the cursor position if there are no selected characters in the\n\ +preedit.\n\ +\n\ +The cursor positions may be inaccurate, especially in presence of zero-width\n\ +characters or non-monospaced fonts.\n"; + +struct text_input_state { + char *commit; + struct { + char *text; + int32_t cursor_begin; + int32_t cursor_end; + } preedit; + struct { + uint32_t after_length; + uint32_t before_length; + } delete_surrounding; +}; + +static struct text_input_state pending = {0}; +static struct text_input_state current = {0}; +static bool entered = false; +static uint32_t serial; +static char *buffer; // text buffer +// cursor is not present, there's no way to move it outside of preedit + +static int sleeptime = 0; +static int width = 100, height = 200; +static int enabled = 0; + +static struct wl_display *display = NULL; +static struct wl_compositor *compositor = NULL; +static struct wl_seat *seat = NULL; +static struct xdg_wm_base *wm_base = NULL; +static struct zwp_text_input_manager_v3 *text_input_manager = NULL; +static struct zwp_text_input_v3 *text_input = NULL; + +struct wlr_egl egl; +struct wl_egl_window *egl_window; +struct wlr_egl_surface *egl_surface; + +static void draw(void) { + eglMakeCurrent(egl.display, egl_surface, egl_surface, egl.context); + + float color[] = {1.0, 1.0, 0.0, 1.0}; + color[0] = enabled * 1.0; + color[1] = entered * 1.0; + + glViewport(0, 0, width, height); + glClearColor(color[0], color[1], color[2], 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + eglSwapBuffers(egl.display, egl_surface); +} + +static size_t utf8_strlen(char *str) { + size_t cp_count = 0; + for (; *str != '\0'; str++) { + if ((*str & 0xc0) != 0x80) { + cp_count++; + } + } + return cp_count; +} + +static size_t utf8_offset(char *utf8_str, size_t byte_offset) { + size_t cp_count = 0; + for (char *c = utf8_str; c < utf8_str + byte_offset; c++) { + if ((*c & 0xc0) != 0x80) { + cp_count++; + } + } + return cp_count; +} + +// TODO: would be nicer to have this text display inside the window +static void show_status() { + printf("State %d:", serial); + if (!enabled) { + printf(" disabled"); + } + + char *preedit_text = current.preedit.text; + if (!preedit_text) { + preedit_text = ""; + } + + printf("\n"); + printf("%s", buffer); + printf("%s\n", preedit_text); + + // Positioning of the cursor requires UTF8 offsets to match monospaced + // glyphs + for (unsigned i = 0; i < utf8_strlen(buffer); i++) { + printf(" "); + } + char *cursor_mark = calloc(utf8_strlen(preedit_text) + 2, sizeof(char)); + for (unsigned i = 0; i < utf8_strlen(preedit_text); i++) { + cursor_mark[i] = '.'; + } + if (current.preedit.cursor_begin == -1 + && current.preedit.cursor_end == -1) { + goto end; + } + if (current.preedit.cursor_begin == -1 + || current.preedit.cursor_end == -1) { + printf("Only one cursor side is defined: %d to %d\n", + current.preedit.cursor_begin, current.preedit.cursor_end); + goto end; + } + + if ((unsigned)current.preedit.cursor_begin > strlen(preedit_text) + || (unsigned)current.preedit.cursor_begin > strlen(preedit_text)) { + printf("Cursor out of bounds\n"); + goto end; + } + + if (current.preedit.cursor_begin == current.preedit.cursor_end) { + cursor_mark[utf8_offset(preedit_text, current.preedit.cursor_begin)] + = '|'; + goto print; + } + + if (current.preedit.cursor_begin > current.preedit.cursor_end) { + printf("End cursor is before start cursor\n"); + goto end; + } + + // negative offsets already checked before + for (unsigned i = utf8_offset(preedit_text, current.preedit.cursor_begin); + i < utf8_offset(preedit_text, current.preedit.cursor_end); i++) { + cursor_mark[i] = '_'; + } +print: + printf("%s\n", cursor_mark); +end: + free(cursor_mark); +} + +static void commit(struct zwp_text_input_v3 *text_input) { + zwp_text_input_v3_commit(text_input); + serial++; +} + +static void send_status_update(struct zwp_text_input_v3 *text_input) { + zwp_text_input_v3_set_surrounding_text(text_input, buffer, strlen(buffer), strlen(buffer)); + zwp_text_input_v3_set_text_change_cause(text_input, ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_INPUT_METHOD); + commit(text_input); +} + +static void text_input_handle_enter(void *data, + struct zwp_text_input_v3 *zwp_text_input_v3, + struct wl_surface *surface) { + entered = true; + zwp_text_input_v3_enable(zwp_text_input_v3); + commit(zwp_text_input_v3); + enabled = true; + draw(); + show_status(); +} + +static void text_input_handle_leave(void *data, + struct zwp_text_input_v3 *zwp_text_input_v3, + struct wl_surface *surface) { + entered = false; + draw(); + wl_display_roundtrip(display); + sleep(sleeptime); + zwp_text_input_v3_disable(zwp_text_input_v3); + commit(zwp_text_input_v3); + enabled = false; + draw(); + show_status(); +} + +static void text_input_commit_string(void *data, + struct zwp_text_input_v3 *zwp_text_input_v3, + const char *text) { + free(pending.commit); + pending.commit = strdup(text); +} + +static void text_input_delete_surrounding_text(void *data, + struct zwp_text_input_v3 *zwp_text_input_v3, + uint32_t before_length, uint32_t after_length) { + pending.delete_surrounding.before_length = before_length; + pending.delete_surrounding.after_length = after_length; +} + +static void text_input_preedit_string(void *data, + struct zwp_text_input_v3 *zwp_text_input_v3, + const char *text, int32_t cursor_begin, int32_t cursor_end) { + free(pending.preedit.text); + pending.preedit.text = strdup(text); + pending.preedit.cursor_begin = cursor_begin; + pending.preedit.cursor_end = cursor_end; +} + +static void text_input_handle_done(void *data, + struct zwp_text_input_v3 *zwp_text_input_v3, + uint32_t incoming_serial) { + if (serial != incoming_serial) { + fprintf(stderr, "Received serial %d while expecting %d\n", incoming_serial, serial); + return; + } + free(current.preedit.text); + free(current.commit); + current = pending; + struct text_input_state empty = {0}; + pending = empty; + + if (current.delete_surrounding.after_length + current.delete_surrounding.before_length > 0) { + // cursor is always after committed text, after_length != 0 will never happen + unsigned delete_before = current.delete_surrounding.before_length; + if (delete_before > strlen(buffer)) { + delete_before = strlen(buffer); + } + buffer[strlen(buffer) - delete_before] = '\0'; + } + + char *commit_string = current.commit; + if (!commit_string) { + commit_string = ""; + } + char *old_buffer = buffer; + buffer = calloc(strlen(buffer) + strlen(commit_string) + 1, sizeof(char)); // realloc may fail anyway + strcpy(buffer, old_buffer); + free(old_buffer); + strcat(buffer, commit_string); + + send_status_update(zwp_text_input_v3); + show_status(); +} + +static const struct zwp_text_input_v3_listener text_input_listener = { + .enter = text_input_handle_enter, + .leave = text_input_handle_leave, + .commit_string = text_input_commit_string, + .delete_surrounding_text = text_input_delete_surrounding_text, + .preedit_string = text_input_preedit_string, + .done = text_input_handle_done, +}; + +static void xdg_surface_handle_configure(void *data, + struct xdg_surface *xdg_surface, uint32_t serial) { + xdg_surface_ack_configure(xdg_surface, serial); + wl_egl_window_resize(egl_window, width, height, 0, 0); + draw(); +} + +static const struct xdg_surface_listener xdg_surface_listener = { + .configure = xdg_surface_handle_configure, +}; + +static void xdg_toplevel_handle_configure(void *data, + struct xdg_toplevel *xdg_toplevel, int32_t w, int32_t h, + struct wl_array *states) { + width = w; + height = h; +} + +static void xdg_toplevel_handle_close(void *data, + struct xdg_toplevel *xdg_toplevel) { + exit(EXIT_SUCCESS); +} + +static const struct xdg_toplevel_listener xdg_toplevel_listener = { + .configure = xdg_toplevel_handle_configure, + .close = xdg_toplevel_handle_close, +}; + +static void handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) { + if (strcmp(interface, "wl_compositor") == 0) { + compositor = wl_registry_bind(registry, name, + &wl_compositor_interface, 1); + } else if (strcmp(interface, xdg_wm_base_interface.name) == 0) { + wm_base = wl_registry_bind(registry, name, &xdg_wm_base_interface, 1); + } else if (strcmp(interface, zwp_text_input_manager_v3_interface.name) == 0) { + text_input_manager = wl_registry_bind(registry, name, + &zwp_text_input_manager_v3_interface, 1); + } else if (strcmp(interface, wl_seat_interface.name) == 0) { + 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, +}; + +int main(int argc, char **argv) { + if (argc > 1) { + if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) { + printf(usage); + return 0; + } + sleeptime = atoi(argv[1]); + if (argc > 3) { + width = atoi(argv[2]); + height = atoi(argv[3]); + } + } + + buffer = calloc(1, sizeof(char)); + + 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 (compositor == NULL) { + fprintf(stderr, "wl-compositor not available\n"); + return EXIT_FAILURE; + } + if (wm_base == NULL) { + fprintf(stderr, "xdg-shell not available\n"); + return EXIT_FAILURE; + } + if (text_input_manager == NULL) { + fprintf(stderr, "text-input not available\n"); + return EXIT_FAILURE; + } + + text_input = zwp_text_input_manager_v3_get_text_input(text_input_manager, seat); + + zwp_text_input_v3_add_listener(text_input, &text_input_listener, NULL); + + + wlr_egl_init(&egl, EGL_PLATFORM_WAYLAND_EXT, display, NULL, + WL_SHM_FORMAT_ARGB8888); + + struct wl_surface *surface = wl_compositor_create_surface(compositor); + struct xdg_surface *xdg_surface = + xdg_wm_base_get_xdg_surface(wm_base, surface); + struct xdg_toplevel *xdg_toplevel = xdg_surface_get_toplevel(xdg_surface); + + xdg_surface_add_listener(xdg_surface, &xdg_surface_listener, NULL); + xdg_toplevel_add_listener(xdg_toplevel, &xdg_toplevel_listener, NULL); + + wl_surface_commit(surface); + + egl_window = wl_egl_window_create(surface, width, height); + egl_surface = wlr_egl_create_surface(&egl, egl_window); + + wl_display_roundtrip(display); + + draw(); + + while (wl_display_dispatch(display) != -1) { + // This space intentionally left blank + } + + return EXIT_SUCCESS; +} |