From 0d362af1da10515c955aa89dbabbbc9db67699a6 Mon Sep 17 00:00:00 2001
From: Sergio Martins <sergio.martins@kdab.com>
Date: Sun, 19 Jan 2025 16:05:56 +0000
Subject: [PATCH] flutter: Add dump_layout()

---
 src/flutter/dart/lib/models/DropArea.dart       |  4 ++++
 src/flutter/dart/lib/private/kddw_bindings.dart | 14 ++++++++++++++
 src/flutter/kddw_bindings.cpp                   |  7 +++++++
 src/flutter/kddw_bindings.h                     |  1 +
 4 files changed, 26 insertions(+)

diff --git a/src/flutter/dart/lib/models/DropArea.dart b/src/flutter/dart/lib/models/DropArea.dart
index 253f4e49a..fcfca46a2 100644
--- a/src/flutter/dart/lib/models/DropArea.dart
+++ b/src/flutter/dart/lib/models/DropArea.dart
@@ -181,4 +181,8 @@ class DropArea implements ffi.Finalizable {
   ffi.Pointer<void> get hostPtr {
     return _hostCpp;
   }
+
+  void dumpLayout() {
+    Bindings.instance.nativeLibrary.dump_layout(_hostCpp.cast());
+  }
 }
diff --git a/src/flutter/dart/lib/private/kddw_bindings.dart b/src/flutter/dart/lib/private/kddw_bindings.dart
index 3cf75ebfc..85b6d4310 100644
--- a/src/flutter/dart/lib/private/kddw_bindings.dart
+++ b/src/flutter/dart/lib/private/kddw_bindings.dart
@@ -239,6 +239,20 @@ class NativeLibrary {
   late final _remove_guest = _remove_guestPtr.asFunction<
       void Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>)>();
 
+  void dump_layout(
+    ffi.Pointer<ffi.Void> host,
+  ) {
+    return _dump_layout(
+      host,
+    );
+  }
+
+  late final _dump_layoutPtr =
+      _lookup<ffi.NativeFunction<ffi.Void Function(ffi.Pointer<ffi.Void>)>>(
+          'dump_layout');
+  late final _dump_layout =
+      _dump_layoutPtr.asFunction<void Function(ffi.Pointer<ffi.Void>)>();
+
   /// Separators are created and destroyed by KDDW
   void set_separator_added_callback(
     ffi.Pointer<ffi.Void> host,
diff --git a/src/flutter/kddw_bindings.cpp b/src/flutter/kddw_bindings.cpp
index 1760ad8c0..ebed5601b 100644
--- a/src/flutter/kddw_bindings.cpp
+++ b/src/flutter/kddw_bindings.cpp
@@ -336,3 +336,10 @@ void set_separator_removed_callback(void *host_, void (*callback)(void *host, vo
     assert(host->_separator_removed_callback == nullptr);
     host->_separator_removed_callback = callback;
 }
+
+void dump_layout(void *host_)
+{
+    assert(host_);
+    auto host = reinterpret_cast<Host *>(host_);
+    host->m_rootItem->dumpLayout();
+}
diff --git a/src/flutter/kddw_bindings.h b/src/flutter/kddw_bindings.h
index c1f7ecf39..2287f8f8f 100644
--- a/src/flutter/kddw_bindings.h
+++ b/src/flutter/kddw_bindings.h
@@ -30,6 +30,7 @@ DOCKS_EXPORT void set_guest_host(void *host, void *guest);
 DOCKS_EXPORT void insert_item(void *host, void *guest, int location);
 DOCKS_EXPORT void insert_item_relative_to(void *host, void *guest, void *relativeToGuest, int location);
 DOCKS_EXPORT void remove_guest(void *host, void *guest);
+DOCKS_EXPORT void dump_layout(void *host);
 
 /// Separators are created and destroyed by KDDW
 DOCKS_EXPORT void set_separator_added_callback(void *host, void (*callback)(void *host, void *separator, int isVertical));