Respect committed floating window sizes and client limits

scripts/tests/fixtures/floating-size.c

@@ -0,0 +1,81 @@
+/* A floating client which chooses a larger window than the configure suggests. */
+#define _GNU_SOURCE
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <wayland-client.h>
+#include "xdg-shell-client-protocol.h"
+
+static struct wl_compositor *compositor;
+static struct wl_shm *shm;
+static struct xdg_wm_base *wm;
+static struct wl_surface *surface;
+static struct wl_buffer *buffer;
+static void ping(void *data, struct xdg_wm_base *base, uint32_t serial) {
+    (void)data;
+    xdg_wm_base_pong(base, serial);
+}
+static const struct xdg_wm_base_listener wm_listener = {.ping = ping};
+static void global(void *data, struct wl_registry *registry, uint32_t name,
+                   const char *interface, uint32_t version) {
+    (void)data; (void)version;
+    if (!strcmp(interface, "wl_compositor"))
+        compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 4);
+    else if (!strcmp(interface, "wl_shm"))
+        shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
+    else if (!strcmp(interface, "xdg_wm_base")) {
+        wm = wl_registry_bind(registry, name, &xdg_wm_base_interface, 1);
+        xdg_wm_base_add_listener(wm, &wm_listener, NULL);
+    }
+}
+static void removed(void *data, struct wl_registry *registry, uint32_t name) {
+    (void)data; (void)registry; (void)name;
+}
+static const struct wl_registry_listener registry_listener = {global, removed};
+static void configure(void *data, struct xdg_surface *xdg, uint32_t serial) {
+    (void)data;
+    xdg_surface_ack_configure(xdg, serial);
+    xdg_surface_set_window_geometry(xdg, 0, 0, 640, 480);
+    wl_surface_attach(surface, buffer, 0, 0);
+    wl_surface_damage(surface, 0, 0, 640, 480);
+    wl_surface_commit(surface);
+}
+static const struct xdg_surface_listener surface_listener = {.configure = configure};
+static void size(void *data, struct xdg_toplevel *top, int32_t w, int32_t h,
+                 struct wl_array *states) {
+    (void)data; (void)top; (void)w; (void)h; (void)states;
+}
+static void close_window(void *data, struct xdg_toplevel *top) {
+    (void)data; (void)top; exit(0);
+}
+static const struct xdg_toplevel_listener top_listener = {.configure = size, .close = close_window};
+int main(void) {
+    struct wl_display *display = wl_display_connect(NULL);
+    if (!display) return 1;
+    struct wl_registry *registry = wl_display_get_registry(display);
+    wl_registry_add_listener(registry, &registry_listener, NULL);
+    if (wl_display_roundtrip(display) < 0 || !compositor || !shm || !wm) return 2;
+    int fd = memfd_create("floating-size-test", MFD_CLOEXEC);
+    size_t bytes = 640 * 480 * 4;
+    if (fd < 0 || ftruncate(fd, bytes)) return 3;
+    uint32_t *pixels = mmap(NULL, bytes, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+    if (pixels == MAP_FAILED) return 4;
+    for (size_t i = 0; i < 640 * 480; i++) pixels[i] = 0xff12ed34;
+    struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, bytes);
+    buffer = wl_shm_pool_create_buffer(pool, 0, 640, 480, 640 * 4, WL_SHM_FORMAT_XRGB8888);
+    wl_shm_pool_destroy(pool);
+    close(fd);
+    surface = wl_compositor_create_surface(compositor);
+    struct xdg_surface *xdg = xdg_wm_base_get_xdg_surface(wm, surface);
+    xdg_surface_add_listener(xdg, &surface_listener, NULL);
+    struct xdg_toplevel *top = xdg_surface_get_toplevel(xdg);
+    xdg_toplevel_add_listener(top, &top_listener, NULL);
+    xdg_toplevel_set_app_id(top, "ferese.test.floating-size");
+    xdg_toplevel_set_title(top, "Floating size regression");
+    wl_surface_commit(surface);
+    while (wl_display_dispatch(display) != -1) {}
+    return 0;
+}