diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/layer-shell.c | 211 | ||||
| -rw-r--r-- | examples/meson.build | 6 |
2 files changed, 217 insertions, 0 deletions
diff --git a/examples/layer-shell.c b/examples/layer-shell.c new file mode 100644 index 00000000..285bec5a --- /dev/null +++ b/examples/layer-shell.c @@ -0,0 +1,211 @@ +#define _POSIX_C_SOURCE 2 +#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 <wlr/util/log.h> +#include "wlr-layer-shell-unstable-v1-client-protocol.h" + +static struct wl_compositor *compositor = NULL; +static struct zwlr_layer_shell_v1 *layer_shell = NULL; +static struct wl_output *wl_output = NULL; + +struct wl_surface *wl_surface; +struct wlr_egl egl; +struct wl_egl_window *egl_window; +struct wlr_egl_surface *egl_surface; +struct wl_callback *frame_callback; + +static uint32_t output = 0; +static uint32_t layer = -1; +static uint32_t anchor = 0; +static uint32_t width = 256, height = 256; + +static void draw(void); + +static void surface_frame_callback( + void *data, struct wl_callback *cb, uint32_t time) { + wl_callback_destroy(cb); + frame_callback = NULL; + draw(); +} + +static struct wl_callback_listener frame_listener = { + .done = surface_frame_callback +}; + +static void draw(void) { + eglMakeCurrent(egl.display, egl_surface, egl_surface, egl.context); + wlr_log(L_DEBUG, "Drawing frame"); + + float color[] = {1.0, 0.0, 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); + + frame_callback = wl_surface_frame(wl_surface); + wl_callback_add_listener(frame_callback, &frame_listener, NULL); +} + +static void layer_surface_configure(void *data, + struct zwlr_layer_surface_v1 *surface, + uint32_t serial, uint32_t w, uint32_t h) { + width = w; + height = h; + zwlr_layer_surface_v1_ack_configure(surface, serial); +} + +struct zwlr_layer_surface_v1_listener layer_surface_listener = { + .configure = layer_surface_configure, +}; + +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, "wl_output") == 0) { + if (output == 0) { + wl_output = wl_registry_bind(registry, name, + &wl_output_interface, 1); + } else { + output--; + } + } else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) { + layer_shell = wl_registry_bind( + registry, name, &zwlr_layer_shell_v1_interface, 1); + } +} + +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) { + wlr_log_init(L_DEBUG, NULL); + char *namespace = "wlroots"; + bool found; + int c; + while ((c = getopt(argc, argv, "w:h:o:"))) { + switch (c) { + case 'o': + output = atoi(optarg); + break; + case 'w': + width = atoi(optarg); + break; + case 'h': + height = atoi(optarg); + break; + case 'l': { + struct { + char *name; + enum zwlr_layer_shell_v1_layer value; + } layers[] = { + { "background", ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND }, + { "bottom", ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM }, + { "top", ZWLR_LAYER_SHELL_V1_LAYER_TOP }, + { "overlay", ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY }, + }; + found = false; + for (size_t i = 0; i < sizeof(layers) / sizeof(layers[0]); ++i) { + if (strcmp(optarg, layers[i].name)) { + layer = layers[i].value; + found = true; + break; + } + } + if (!found) { + fprintf(stderr, "invalid layer %s\n", optarg); + return 1; + } + break; + } + case 'a': { + struct { + char *name; + uint32_t value; + } anchors[] = { + { "top", ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP }, + { "bottom", ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM }, + { "left", ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT }, + { "right", ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT }, + }; + found = false; + for (size_t i = 0; i < sizeof(anchors) / sizeof(anchors[0]); ++i) { + if (strcmp(optarg, anchors[i].name)) { + anchor |= anchors[i].value; + found = true; + break; + } + } + if (!found) { + fprintf(stderr, "invalid anchor %s\n", optarg); + return 1; + } + } + default: + break; + } + } + + struct wl_display *display = wl_display_connect(NULL); + if (display == NULL) { + fprintf(stderr, "Failed to create display\n"); + return 1; + } + + 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 1; + } + if (layer_shell == NULL) { + fprintf(stderr, "layer-shell not available\n"); + return 1; + } + if (wl_output == NULL) { + fprintf(stderr, "wl_output not available\n"); + return 1; + } + + wlr_egl_init(&egl, EGL_PLATFORM_WAYLAND_EXT, display, NULL, + WL_SHM_FORMAT_ARGB8888); + + wl_surface = wl_compositor_create_surface(compositor); + + struct zwlr_layer_surface_v1 *layer_surface = + zwlr_layer_shell_v1_get_layer_surface(layer_shell, + wl_surface, wl_output, layer, namespace); + zwlr_layer_surface_v1_set_anchor(layer_surface, anchor); + // TODO: margin, interactivity, exclusive zone + + wl_surface_commit(wl_surface); + + egl_window = wl_egl_window_create(wl_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 0; +} diff --git a/examples/meson.build b/examples/meson.build index a83def8f..558af4ac 100644 --- a/examples/meson.build +++ b/examples/meson.build @@ -48,3 +48,9 @@ executable( dependencies: [wayland_client, wlr_protos, wlroots, threads], link_with: lib_shared, ) + +executable( + 'layer-shell', + 'layer-shell.c', + dependencies: [wayland_client, wlr_protos, wlroots] +) |