From 7b8a6cca3f6c28051376bfa84de24861190d19c0 Mon Sep 17 00:00:00 2001
From: Window Maker <wmaker@localhost>
Date: Sun, 24 May 2026 17:27:03 +0200
Subject: [PATCH] WINGs/wview_wl: send WME_CONFIGURE to parent on child resize

On X11, resizing a child window generates a ConfigureNotify event
delivered to the parent. Scroll views rely on this to update scroller
proportions when the content view is resized. On Wayland, wl_resize
never generated this event, so the scroller's documentFullyVisible
flag stayed at 1 (set during initial setup when content was small)
and paintScroller drew only a stippled 'full' indicator instead of
the knob/track.

Fix: when a mapped non-toplevel view is resized, dispatch a
WME_CONFIGURE event to its parent synchronously.
---
 WINGs/wview_wl.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/WINGs/wview_wl.c b/WINGs/wview_wl.c
index ce087e3..40d91c3 100644
--- a/WINGs/wview_wl.c
+++ b/WINGs/wview_wl.c
@@ -342,8 +342,23 @@ static void wl_resize(void *vctx, W_View *view, unsigned int w, unsigned int h)
 		W_SetViewBacking(view->window, img);
 	}
 
-	if (view->flags.mapped)
+	if (view->flags.mapped) {
+		/* Notify parent of child resize (mirrors X11 ConfigureNotify
+		 * which scroll views use to update scroller proportions). */
+		if (view->parent) {
+			WMEvent cev;
+			memset(&cev, 0, sizeof(cev));
+			cev.type = WME_CONFIGURE;
+			cev.window = view->parent->window;
+			cev.u.configure.window = view->window;
+			cev.u.configure.event = view->parent->window;
+			cev.u.configure.width = w;
+			cev.u.configure.height = h;
+			cev._view_target = view->parent;
+			WMHandleEvent(&cev);
+		}
 		wl_redisplay(vctx, view);
+	}
 }
 
 static void wl_reparent(void *vctx, W_View *view, W_View *newParent, int x, int y)
@@ -448,13 +463,6 @@ static void wl_redisplay(void *vctx, W_View *view)
 		if (child->flags.mapped && child->flags.realized && !child->flags.alreadyDead) {
 			wl_redisplay(vctx, child);
 		}
-		/* Debug: log scroller-sized children in scroll-view-sized parents */
-		if (view->size.width > 400 && view->size.height > 80 && view->size.height < 100
-		    && child->size.height <= 20 && child->size.height > 0)
-			wwarning("scroller? child %p size=%dx%d pos=%d,%d mapped=%d realized=%d",
-			         (void*)child, child->size.width, child->size.height,
-			         child->pos.x, child->pos.y,
-			         child->flags.mapped, child->flags.realized);
 		child = next;
 	}