Allow children of gui_container be resized anytime

So far, their position inside the container was determined when
initializing the interface. However, if a child were resized
afterwards, the container would not adjust its elements accordingly.
Moreover, the implementation for gui_container relied on hacking the
children's X/Y coordinates, which could only be done once.

Now, two additional members have been added to gui_common so that
specific X/Y offset can be determined by the parent, additionally to the
traditional rules followed by gui_coords. Despite the extra memory
footprint, it now allows containers to set specific X/Y offsets for
their children on every game cycle.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/menu/src/gamecfg_menu.c b/src/menu/src/gamecfg_menu.c
index 31d105e..9fc3873 100644
--- a/src/menu/src/gamecfg_menu.c
+++ b/src/menu/src/gamecfg_menu.c
@@ -20,8 +20,11 @@ static int update(struct menu_common *const c, void *const arg)
     struct gamecfg_menu *const m = arg;
 
     m->bcnt.common.y = screen_h - 40;
+    m->r.w = screen_w / 2;
+    m->r.h = screen_h / 2;
 
-    if (gui_update(&m->bcnt.common, &c->p, &c->cam))
+    if (gui_update(&m->cnt.common, &c->p, &c->cam)
+        || gui_update(&m->bcnt.common, &c->p, &c->cam))
         return -1;
 
     return 0;
@@ -48,8 +51,6 @@ int menu_gamecfg(struct menu_common *const c)
     m.cnt.common.vcentered = true;
 
     gui_rounded_rect_init(&m.r);
-    m.r.w = screen_w / 2;
-    m.r.h = screen_h / 2;
     gui_add_child(&m.cnt.common, &m.r.common);
 
     gui_container_init(&m.bcnt);