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Added IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS / IMGUI_DISABLE_FILE_FUNCTIONS #2734)

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Using in Emscripten example.
This commit is contained in:
omar
2019-11-19 21:14:44 +01:00
parent 93efa5415f
commit 4e90906b04
6 changed files with 91 additions and 29 deletions
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30
imgui_internal.h
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@ -191,8 +191,6 @@ extern IMGUI_API ImGuiContext* GImGui; // Current implicit context pointer
#endif
// Helpers: Misc
IMGUI_API void* ImFileLoadToMemory(const char* filename, const char* file_open_mode, size_t* out_file_size = NULL, int padding_bytes = 0);
IMGUI_API FILE* ImFileOpen(const char* filename, const char* file_open_mode);
#define ImQsort qsort
IMGUI_API ImU32 ImHashData(const void* data, size_t data_size, ImU32 seed = 0);
IMGUI_API ImU32 ImHashStr(const char* data, size_t data_size = 0, ImU32 seed = 0);
@ -260,6 +258,32 @@ static inline ImVec4 operator-(const ImVec4& lhs, const ImVec4& rhs)
static inline ImVec4 operator*(const ImVec4& lhs, const ImVec4& rhs) { return ImVec4(lhs.x*rhs.x, lhs.y*rhs.y, lhs.z*rhs.z, lhs.w*rhs.w); }
#endif
// Helpers: File System
#if defined(__EMSCRIPTEN__) && !defined(IMGUI_DISABLE_FILE_FUNCTIONS)
#define IMGUI_DISABLE_FILE_FUNCTIONS
#endif
#ifdef IMGUI_DISABLE_FILE_FUNCTIONS
#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS
typedef void* ImFileHandle;
static inline ImFileHandle ImFileOpen(const char*, const char*) { return NULL; }
static inline int ImFileClose(ImFileHandle) { return -1; }
static inline size_t ImFileGetSize(ImFileHandle) { return (size_t)-1; }
static inline size_t ImFileRead(void*, size_t, size_t, ImFileHandle) { return 0; }
static inline size_t ImFileWrite(const void*, size_t, size_t, ImFileHandle) { return 0; }
#endif
#ifndef IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS
typedef FILE* ImFileHandle;
IMGUI_API ImFileHandle ImFileOpen(const char* filename, const char* mode);
IMGUI_API int ImFileClose(ImFileHandle file);
IMGUI_API size_t ImFileGetSize(ImFileHandle file);
IMGUI_API size_t ImFileRead(void* data, size_t size, size_t count, ImFileHandle file);
IMGUI_API size_t ImFileWrite(const void* data, size_t size, size_t count, ImFileHandle file);
#else
#define IMGUI_DISABLE_TTY_FUNCTIONS // Can't use stdout, fflush if we are not using default file functions
#endif
IMGUI_API void* ImFileLoadToMemory(const char* filename, const char* mode, size_t* out_file_size = NULL, int padding_bytes = 0);
// Helpers: Maths
// - Wrapper for standard libs functions. (Note that imgui_demo.cpp does _not_ use them to keep the code easy to copy)
#ifndef IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS
@ -1103,7 +1127,7 @@ struct ImGuiContext
// Capture/Logging
bool LogEnabled;
ImGuiLogType LogType;
FILE* LogFile; // If != NULL log to stdout/ file
ImFileHandle LogFile; // If != NULL log to stdout/ file
ImGuiTextBuffer LogBuffer; // Accumulation buffer when log to clipboard. This is pointer so our GImGui static constructor doesn't call heap allocators.
float LogLinePosY;
bool LogLineFirstItem;