center loaded background image in larger screen

diff --git a/readpng.c b/readpng.c
index 83936ae..ac24dd4 100644 (file)
--- a/readpng.c
+++ b/readpng.c
@@ -80,12 +80,14 @@ int readpng(void *dest, const char *fname, readpng_what what, int req_w, int req
                        if (width > req_w) {
                                x_ofs = (width - req_w) / 2;
                                width = req_w;
-                       }
+                       } else
+                               dst += (req_w - width) / 2;
                        height = png_get_image_height(png_ptr, info_ptr);
                        if (height > req_h) {
                                y_ofs = (height - req_h) / 2;
                                height = req_h;
-                       }
+                       } else
+                               dst += (req_h - height) / 2 * req_w;
 
                        for (h = 0; h < height; h++)
                        {