49 lines
2.9 KiB
C
49 lines
2.9 KiB
C
|
# pragma once
|
||
|
|
# include <imgui.h>
|
||
|
|
# include <type_traits>
|
||
|
|
|
||
|
|
// https://stackoverflow.com/a/8597498
|
||
|
|
# define DECLARE_HAS_NESTED(Name, Member) \
|
||
|
|
\
|
||
|
|
template<class T> \
|
||
|
|
struct has_nested_ ## Name \
|
||
|
|
{ \
|
||
|
|
typedef char yes; \
|
||
|
|
typedef yes(&no)[2]; \
|
||
|
|
\
|
||
|
|
template<class U> static yes test(decltype(U::Member)*); \
|
||
|
|
template<class U> static no test(...); \
|
||
|
|
\
|
||
|
|
static bool const value = sizeof(test<T>(0)) == sizeof(yes); \
|
||
|
|
};
|
||
|
|
|
||
|
|
# define DECLARE_KEY_TESTER(Key) \
|
||
|
|
DECLARE_HAS_NESTED(Key, Key) \
|
||
|
|
struct KeyTester_ ## Key \
|
||
|
|
{ \
|
||
|
|
template <typename T> \
|
||
|
|
static int Get(typename std::enable_if<has_nested_ ## Key<ImGuiKey_>::value, T>::type*) \
|
||
|
|
{ \
|
||
|
|
return T::Key; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
template <typename T> \
|
||
|
|
static int Get(typename std::enable_if<!has_nested_ ## Key<ImGuiKey_>::value, T>::type*) \
|
||
|
|
{ \
|
||
|
|
return -1; \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
DECLARE_KEY_TESTER(ImGuiKey_F);
|
||
|
|
DECLARE_KEY_TESTER(ImGuiKey_D);
|
||
|
|
|
||
|
|
static inline int GetEnumValueForF()
|
||
|
|
{
|
||
|
|
return KeyTester_ImGuiKey_F::Get<ImGuiKey_>(nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int GetEnumValueForD()
|
||
|
|
{
|
||
|
|
return KeyTester_ImGuiKey_D::Get<ImGuiKey_>(nullptr);
|
||
|
|
}
|