w32_common: center window on original window center on video resize

Position the window around the original window center on video size change
(when switching to the next file with different resolution, for example)
instead of keeping the position of its top-left corner fixed.

1 files changed, 8 insertions, 0 deletions

diff --git a/video/out/w32_common.c b/video/out/w32_common.c
index df67dc32b3..ea8ec8772e 100644
--- a/video/out/w32_common.c
+++ b/video/out/w32_common.c
@@ -1145,6 +1145,7 @@ static void gui_thread_reconfig(void *ptr)
     vo_apply_window_geometry(vo, &geo);
 
     bool reset_size = w32->o_dwidth != vo->dwidth || w32->o_dheight != vo->dheight;
+    bool pos_init = false;
 
     w32->o_dwidth = vo->dwidth;
     w32->o_dheight = vo->dheight;
@@ -1161,6 +1162,7 @@ static void gui_thread_reconfig(void *ptr)
         } else {
             w32->window_bounds_initialized = true;
             reset_size = true;
+            pos_init = true;
             w32->window_x = w32->prev_x = geo.win.x0;
             w32->window_y = w32->prev_y = geo.win.y0;
         }
@@ -1176,6 +1178,12 @@ static void gui_thread_reconfig(void *ptr)
         vo->dheight = r.bottom;
     }
 
+    // Recenter window around old position on new video size 
+    // excluding the case when initial positon handled by win_state.
+    if (!pos_init) {
+        w32->window_x += w32->dw / 2 - vo->dwidth / 2;
+        w32->window_y += w32->dh / 2 - vo->dheight / 2;
+    }
     w32->dw = vo->dwidth;
     w32->dh = vo->dheight;