add %W format specifier (#719)

2 files changed, 11 insertions, 0 deletions

diff --git a/man/feh.pre b/man/feh.pre
index e8fe87d..28dc5f4 100644
--- a/man/feh.pre
+++ b/man/feh.pre
@@ -1353,6 +1353,11 @@ Number of current file
 .
 Image width
 .
+.It %W
+.
+Window dimensions and offset as WxH+x+y
+.Pq X11 geometry format .
+.
 .It %v
 .
 .Nm
diff --git a/src/slideshow.c b/src/slideshow.c
index 41e9ecc..a53749e 100644
--- a/src/slideshow.c
+++ b/src/slideshow.c
@@ -529,6 +529,12 @@ char *feh_printf(char *str, feh_file * file, winwidget winwid)
 					strncat(ret, buf, sizeof(ret) - strlen(ret) - 1);
 				}
 				break;
+			case 'W':
+				if (winwid) {
+					snprintf(buf, sizeof(buf), "%dx%d+%d+%d", winwid->w, winwid->h, winwid->x, winwid->y);
+					strncat(ret, buf, sizeof(ret) - strlen(ret) - 1);
+				}
+				break;
 			case 'z':
 				if (winwid) {
 					snprintf(buf, sizeof(buf), "%.2f", winwid->zoom);