//======================================================================== // GLFW 3.3 - www.glfw.org //------------------------------------------------------------------------ // Copyright (c) 2002-2006 Marcus Geelnard // Copyright (c) 2006-2016 Camilla Löwy // // This software is provided 'as-is', without any express or implied // warranty. In no event will the authors be held liable for any damages // arising from the use of this software. // // Permission is granted to anyone to use this software for any purpose, // including commercial applications, and to alter it and redistribute it // freely, subject to the following restrictions: // // 1. The origin of this software must not be misrepresented; you must not // claim that you wrote the original software. If you use this software // in a product, an acknowledgment in the product documentation would // be appreciated but is not required. // // 2. Altered source versions must be plainly marked as such, and must not // be misrepresented as being the original software. // // 3. This notice may not be removed or altered from any source // distribution. // //======================================================================== #include "internal.h" #include "mappings.h" #include #include #include #include #include // The global variables below comprise all mutable global data in GLFW // // Any other global variable is a bug // Global state shared between compilation units of GLFW // _GLFWlibrary _glfw = { GLFW_FALSE }; // These are outside of _glfw so they can be used before initialization and // after termination // static _GLFWerror _glfwMainThreadError; static GLFWerrorfun _glfwErrorCallback; static _GLFWinitconfig _glfwInitHints = { GLFW_TRUE, // hat buttons { GLFW_TRUE, // macOS menu bar GLFW_TRUE // macOS bundle chdir } }; // Terminate the library // static void terminate(void) { int i; memset(&_glfw.callbacks, 0, sizeof(_glfw.callbacks)); while (_glfw.windowListHead) glfwDestroyWindow((GLFWwindow*) _glfw.windowListHead); while (_glfw.cursorListHead) glfwDestroyCursor((GLFWcursor*) _glfw.cursorListHead); for (i = 0; i < _glfw.monitorCount; i++) { _GLFWmonitor* monitor = _glfw.monitors[i]; if (monitor->originalRamp.size) _glfwPlatformSetGammaRamp(monitor, &monitor->originalRamp); _glfwFreeMonitor(monitor); } free(_glfw.monitors); _glfw.monitors = NULL; _glfw.monitorCount = 0; free(_glfw.mappings); _glfw.mappings = NULL; _glfw.mappingCount = 0; _glfwTerminateVulkan(); _glfwPlatformTerminate(); _glfw.initialized = GLFW_FALSE; while (_glfw.errorListHead) { _GLFWerror* error = _glfw.errorListHead; _glfw.errorListHead = error->next; free(error); } _glfwPlatformDestroyTls(&_glfw.contextSlot); _glfwPlatformDestroyTls(&_glfw.errorSlot); _glfwPlatformDestroyMutex(&_glfw.errorLock); memset(&_glfw, 0, sizeof(_glfw)); } ////////////////////////////////////////////////////////////////////////// ////// GLFW internal API ////// ////////////////////////////////////////////////////////////////////////// char* _glfw_strdup(const char* source) { const size_t length = strlen(source); char* result = calloc(length + 1, 1); strcpy(result, source); return result; } float _glfw_fminf(float a, float b) { if (a != a) return b; else if (b != b) return a; else if (a < b) return a; else return b; } float _glfw_fmaxf(float a, float b) { if (a != a) return b; else if (b != b) return a; else if (a > b) return a; else return b; } ////////////////////////////////////////////////////////////////////////// ////// GLFW event API ////// ////////////////////////////////////////////////////////////////////////// // Notifies shared code of an error // void _glfwInputError(int code, const char* format, ...) { _GLFWerror* error; char description[_GLFW_MESSAGE_SIZE]; if (format) { va_list vl; va_start(vl, format); vsnprintf(description, sizeof(description), format, vl); va_end(vl); description[sizeof(description) - 1] = '\0'; } else { if (code == GLFW_NOT_INITIALIZED) strcpy(description, "The GLFW library is not initialized"); else if (code == GLFW_NO_CURRENT_CONTEXT) strcpy(description, "There is no current context"); else if (code == GLFW_INVALID_ENUM) strcpy(description, "Invalid argument for enum parameter"); else if (code == GLFW_INVALID_VALUE) strcpy(description, "Invalid value for parameter"); else if (code == GLFW_OUT_OF_MEMORY) strcpy(description, "Out of memory"); else if (code == GLFW_API_UNAVAILABLE) strcpy(description, "The requested API is unavailable"); else if (code == GLFW_VERSION_UNAVAILABLE) strcpy(description, "The requested API version is unavailable"); else if (code == GLFW_PLATFORM_ERROR) strcpy(description, "A platform-specific error occurred"); else if (code == GLFW_FORMAT_UNAVAILABLE) strcpy(description, "The requested format is unavailable"); else if (code == GLFW_NO_WINDOW_CONTEXT) strcpy(description, "The specified window has no context"); else strcpy(description, "ERROR: UNKNOWN GLFW ERROR"); } if (_glfw.initialized) { error = _glfwPlatformGetTls(&_glfw.errorSlot); if (!error) { error = calloc(1, sizeof(_GLFWerror)); _glfwPlatformSetTls(&_glfw.errorSlot, error); _glfwPlatformLockMutex(&_glfw.errorLock); error->next = _glfw.errorListHead; _glfw.errorListHead = error; _glfwPlatformUnlockMutex(&_glfw.errorLock); } } else error = &_glfwMainThreadError; error->code = code; strcpy(error->description, description); if (_glfwErrorCallback) _glfwErrorCallback(code, description); } ////////////////////////////////////////////////////////////////////////// ////// GLFW public API ////// ////////////////////////////////////////////////////////////////////////// GLFWAPI int glfwInit(void) { if (_glfw.initialized) return GLFW_TRUE; memset(&_glfw, 0, sizeof(_glfw)); _glfw.hints.init = _glfwInitHints; if (!_glfwPlatformInit()) { terminate(); return GLFW_FALSE; } if (!_glfwPlatformCreateMutex(&_glfw.errorLock) || !_glfwPlatformCreateTls(&_glfw.errorSlot) || !_glfwPlatformCreateTls(&_glfw.contextSlot)) { terminate(); return GLFW_FALSE; } _glfwPlatformSetTls(&_glfw.errorSlot, &_glfwMainThreadError); _glfw.initialized = GLFW_TRUE; _glfw.timer.offset = _glfwPlatformGetTimerValue(); glfwDefaultWindowHints(); { int i; for (i = 0; _glfwDefaultMappings[i]; i++) { if (!glfwUpdateGamepadMappings(_glfwDefaultMappings[i])) { terminate(); return GLFW_FALSE; } } } return GLFW_TRUE; } GLFWAPI void glfwTerminate(void) { if (!_glfw.initialized) return; terminate(); } GLFWAPI void glfwInitHint(int hint, int value) { switch (hint) { case GLFW_JOYSTICK_HAT_BUTTONS: _glfwInitHints.hatButtons = value; return; case GLFW_COCOA_CHDIR_RESOURCES: _glfwInitHints.ns.chdir = value; return; case GLFW_COCOA_MENUBAR: _glfwInitHints.ns.menubar = value; return; } _glfwInputError(GLFW_INVALID_ENUM, "Invalid init hint 0x%08X", hint); } GLFWAPI void glfwGetVersion(int* major, int* minor, int* rev) { if (major != NULL) *major = GLFW_VERSION_MAJOR; if (minor != NULL) *minor = GLFW_VERSION_MINOR; if (rev != NULL) *rev = GLFW_VERSION_REVISION; } GLFWAPI const char* glfwGetVersionString(void) { return _glfwPlatformGetVersionString(); } GLFWAPI int glfwGetError(const char** description) { _GLFWerror* error; int code = GLFW_NO_ERROR; if (description) *description = NULL; if (_glfw.initialized) error = _glfwPlatformGetTls(&_glfw.errorSlot); else error = &_glfwMainThreadError; if (error) { code = error->code; error->code = GLFW_NO_ERROR; if (description && code) *description = error->description; } return code; } GLFWAPI GLFWerrorfun glfwSetErrorCallback(GLFWerrorfun cbfun) { _GLFW_SWAP_POINTERS(_glfwErrorCallback, cbfun); return cbfun; }