From 2452e84d8c38cc62fba52cf5bdf41b7a12ba35a1 Mon Sep 17 00:00:00 2001
From: Fushan Wen <qydwhotmail@gmail.com>
Date: Thu, 8 Feb 2024 17:14:20 +0800
Subject: [PATCH] Fix build with Qt6.8

handleExpose was removed in https://github.com/qt/qtwayland/commit/20fb0e7dd53a00dd7f4721a0b712e5554cb268fd
---
 src/qwaylandlayersurface.cpp | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/qwaylandlayersurface.cpp b/src/qwaylandlayersurface.cpp
index 89f47ef..1367d65 100644
--- a/src/qwaylandlayersurface.cpp
+++ b/src/qwaylandlayersurface.cpp
@@ -16,6 +16,34 @@
 
 #include <QGuiApplication>
 
+namespace
+{
+template<typename T>
+concept QWaylandWindowOldV6Type = requires(T t) { t.handleExpose(QRect()); };
+
+template<typename T>
+concept QWaylandWindowNewV6Type = requires(T t) {
+    t.sendRecursiveExposeEvent();
+    !t.handleExpose(QRect());
+};
+
+class ExposeHelper
+{
+public:
+    template<QWaylandWindowOldV6Type V6T>
+    ExposeHelper(V6T *window, const QSize &pendingSize)
+    {
+        window->handleExpose(QRect(QPoint(), pendingSize));
+    }
+
+    template<QWaylandWindowNewV6Type V6T>
+    ExposeHelper(V6T *window, [[maybe_unused]] const QSize &pendingSize)
+    {
+        window->sendRecursiveExposeEvent();
+    }
+};
+}
+
 namespace LayerShellQt
 {
 QWaylandLayerSurface::QWaylandLayerSurface(QWaylandLayerShellIntegration *shell, QtWaylandClient::QWaylandWindow *window)
@@ -92,7 +120,7 @@ void QWaylandLayerSurface::zwlr_layer_surface_v1_configure(uint32_t serial, uint
     if (!m_configured) {
         m_configured = true;
         window()->resizeFromApplyConfigure(m_pendingSize);
-        window()->handleExpose(QRect(QPoint(), m_pendingSize));
+        ExposeHelper helper(window(), m_pendingSize);
     } else {
         // Later configures are resizes, so we have to queue them up for a time when we
         // are not painting to the window.