Add floating placement memory and edge snapping

scripts/tests/fixtures/floating-size.c

@@ -14,6 +14,26 @@ static struct wl_shm *shm;
 static struct xdg_wm_base *wm;
 static struct wl_surface *surface;
 static struct wl_buffer *buffer;
+static int width = 640, height = 480;
+static int honor_configure;
+static int buffer_width, buffer_height;
+
+static void make_buffer(void) {
+    if (buffer && buffer_width == width && buffer_height == height) return;
+    int fd = memfd_create("floating-size-test", MFD_CLOEXEC);
+    size_t bytes = (size_t)width * height * 4;
+    if (fd < 0 || ftruncate(fd, bytes)) exit(3);
+    uint32_t *pixels = mmap(NULL, bytes, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+    if (pixels == MAP_FAILED) exit(4);
+    for (size_t i = 0; i < (size_t)width * height; i++) pixels[i] = 0xff12ed34;
+    struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, bytes);
+    if (buffer) wl_buffer_destroy(buffer);
+    buffer = wl_shm_pool_create_buffer(pool, 0, width, height, width * 4, WL_SHM_FORMAT_XRGB8888);
+    wl_shm_pool_destroy(pool);
+    munmap(pixels, bytes);
+    close(fd);
+    buffer_width = width; buffer_height = height;
+}
 static void ping(void *data, struct xdg_wm_base *base, uint32_t serial) {
     (void)data;
     xdg_wm_base_pong(base, serial);
@@ -38,42 +58,40 @@ 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);
+    make_buffer();
+    xdg_surface_set_window_geometry(xdg, 0, 0, width, height);
     wl_surface_attach(surface, buffer, 0, 0);
-    wl_surface_damage(surface, 0, 0, 640, 480);
+    wl_surface_damage(surface, 0, 0, width, height);
     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;
+    (void)data; (void)top; (void)states;
+    if (honor_configure) {
+        if (w > 0) width = w;
+        if (h > 0) height = h;
+    }
 }
 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) {
+int main(int argc, char **argv) {
+    if (argc >= 4) { width = atoi(argv[2]); height = atoi(argv[3]); }
+    honor_configure = argc >= 5;
+    if (width < 1 || height < 1 || width > 2048 || height > 2048) return 5;
     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_app_id(top, argc >= 2 ? argv[1] : "ferese.test.floating-size");
     xdg_toplevel_set_title(top, "Floating size regression");
     wl_surface_commit(surface);
     while (wl_display_dispatch(display) != -1) {}