swaybg: check that background can be loaded

1 files changed, 8 insertions, 0 deletions

diff --git a/swaybg/main.c b/swaybg/main.c
index 9dba0c8f..2fdd4220 100644
--- a/swaybg/main.c
+++ b/swaybg/main.c
@@ -97,6 +97,14 @@ int main(int argc, const char **argv) {
                 if (!image) {
                         sway_abort("Failed to read background image.");
                 }
+                if (cairo_surface_status(image) != CAIRO_STATUS_SUCCESS) {
+                        sway_abort("Failed to read background image: %s."
+#ifndef WITH_GDK_PIXBUF
+                                        "\nSway was compiled without gdk_pixbuf support, so only"
+                                        "\nPNG images can be loaded. This is the likely cause."
+#endif //WITH_GDK_PIXBUF
+                                        , cairo_status_to_string(cairo_surface_status(image)));
+                }
                 double width = cairo_image_surface_get_width(image);
                 double height = cairo_image_surface_get_height(image);