+// ----------------------------------------------------------------------------
+// wxEventHashTable: a helper of wxEvtHandler to speed up wxEventTable lookups.
+// ----------------------------------------------------------------------------
+
+WX_DEFINE_ARRAY_NO_PTR(const wxEventTableEntry*, wxEventTableEntryPointerArray);
+class WXDLLIMPEXP_BASE wxEvtHandler;
+
+class WXDLLIMPEXP_BASE wxEventHashTable
+{
+private:
+ // Internal data structs
+ struct EventTypeTable
+ {
+ wxEventType eventType;
+ wxEventTableEntryPointerArray eventEntryTable;
+ };
+ typedef EventTypeTable* EventTypeTablePointer;
+
+public:
+ // Constructor, needs the event table it needs to hash later on.
+ // Note: hashing of the event table is not done in the constructor as it
+ // can be that the event table is not yet full initialize, the hash
+ // will gets initialized when handling the first event look-up request.
+ wxEventHashTable(const wxEventTable &table);
+ // Destructor.
+ ~wxEventHashTable();
+
+ // Handle the given event, in other words search the event table hash
+ // and call self->ProcessEvent() if a match was found.
+ bool HandleEvent(wxEvent &event, wxEvtHandler *self);
+
+protected:
+ // Init the hash table with the entries of the static event table.
+ void InitHashTable();
+ // Helper funtion of InitHashTable() to insert 1 entry into the hash table.
+ void AddEntry(const wxEventTableEntry &entry);
+ // Allocate and init with null pointers the base hash table.
+ void AllocEventTypeTable(size_t size);
+ // Grow the hash table in size and transfer all items currently
+ // in the table to the correct location in the new table.
+ void GrowEventTypeTable();
+
+protected:
+ const wxEventTable &m_table;
+ bool m_rebuildHash;
+
+ size_t m_size;
+ EventTypeTablePointer *m_eventTypeTable;
+
+ DECLARE_NO_COPY_CLASS(wxEventHashTable)
+};
+
projects / wxWidgets.git / blobdiff