1 files changed, 50 insertions, 0 deletions
diff --git a/src/helpers/SubsurfaceTree.hpp b/src/helpers/SubsurfaceTree.hpp
new file mode 100644
index 00000000..df92033a
--- /dev/null
+++ b/src/helpers/SubsurfaceTree.hpp
@@ -0,0 +1,50 @@
+#pragma once
+
+#include "../defines.hpp"
+#include <list>
+
+struct SSubsurface;
+
+typedef void (*applyGlobalOffsetFn)(void *, int *, int *);
+
+struct SSurfaceTreeNode {
+    wlr_surface*        pSurface = nullptr;
+
+    DYNMULTILISTENER(newSubsurface);
+    DYNMULTILISTENER(commit);
+    DYNMULTILISTENER(destroy);
+
+    SSurfaceTreeNode*   pParent = nullptr;
+    SSubsurface*        pSubsurface = nullptr;
+
+    std::list<SSubsurface> childSubsurfaces;
+
+    applyGlobalOffsetFn offsetfn;
+    void *globalOffsetData;
+
+    bool operator==(const SSurfaceTreeNode& rhs) {
+        return pSurface == rhs.pSurface;
+    }
+};
+
+struct SSubsurface {
+    wlr_subsurface*     pSubsurface = nullptr;
+
+    SSurfaceTreeNode*   pParent = nullptr;
+    SSurfaceTreeNode*   pChild = nullptr;
+
+    DYNMULTILISTENER(map);
+    DYNMULTILISTENER(unmap);
+    DYNMULTILISTENER(destroy);
+
+    bool operator==(const SSubsurface& rhs) {
+        return pSubsurface == rhs.pSubsurface;
+    }
+};
+
+namespace SubsurfaceTree {
+    SSurfaceTreeNode* createTreeRoot(wlr_surface*, applyGlobalOffsetFn, void*);
+    void destroySurfaceTree(SSurfaceTreeNode*);
+
+    inline std::list<SSurfaceTreeNode> surfaceTreeNodes;
+};