diff options
Diffstat (limited to 'libs/glfw-3.3.8/src/init.c')
| -rw-r--r-- | libs/glfw-3.3.8/src/init.c | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/libs/glfw-3.3.8/src/init.c b/libs/glfw-3.3.8/src/init.c new file mode 100644 index 0000000..cfdd512 --- /dev/null +++ b/libs/glfw-3.3.8/src/init.c @@ -0,0 +1,420 @@ +//======================================================================== +// GLFW 3.3 - www.glfw.org +//------------------------------------------------------------------------ +// Copyright (c) 2002-2006 Marcus Geelnard +// Copyright (c) 2006-2018 Camilla Löwy <elmindreda@glfw.org> +// +// 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. +// +//======================================================================== +// Please use C89 style variable declarations in this file because VS 2010 +//======================================================================== + +#include "internal.h" + +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <assert.h> + + +// NOTE: The global variables below comprise all mutable global data in GLFW +// Any other mutable global variable is a bug + +// This contains all mutable 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 without special handling when _glfw is cleared to zero +// +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 ////// +////////////////////////////////////////////////////////////////////////// + +// Encode a Unicode code point to a UTF-8 stream +// Based on cutef8 by Jeff Bezanson (Public Domain) +// +size_t _glfwEncodeUTF8(char* s, uint32_t codepoint) +{ + size_t count = 0; + + if (codepoint < 0x80) + s[count++] = (char) codepoint; + else if (codepoint < 0x800) + { + s[count++] = (codepoint >> 6) | 0xc0; + s[count++] = (codepoint & 0x3f) | 0x80; + } + else if (codepoint < 0x10000) + { + s[count++] = (codepoint >> 12) | 0xe0; + s[count++] = ((codepoint >> 6) & 0x3f) | 0x80; + s[count++] = (codepoint & 0x3f) | 0x80; + } + else if (codepoint < 0x110000) + { + s[count++] = (codepoint >> 18) | 0xf0; + s[count++] = ((codepoint >> 12) & 0x3f) | 0x80; + s[count++] = ((codepoint >> 6) & 0x3f) | 0x80; + s[count++] = (codepoint & 0x3f) | 0x80; + } + + return count; +} + +// Splits and translates a text/uri-list into separate file paths +// NOTE: This function destroys the provided string +// +char** _glfwParseUriList(char* text, int* count) +{ + const char* prefix = "file://"; + char** paths = NULL; + char* line; + + *count = 0; + + while ((line = strtok(text, "\r\n"))) + { + char* path; + + text = NULL; + + if (line[0] == '#') + continue; + + if (strncmp(line, prefix, strlen(prefix)) == 0) + { + line += strlen(prefix); + // TODO: Validate hostname + while (*line != '/') + line++; + } + + (*count)++; + + path = calloc(strlen(line) + 1, 1); + paths = realloc(paths, *count * sizeof(char*)); + paths[*count - 1] = path; + + while (*line) + { + if (line[0] == '%' && line[1] && line[2]) + { + const char digits[3] = { line[1], line[2], '\0' }; + *path = (char) strtol(digits, NULL, 16); + line += 2; + } + else + *path = *line; + + path++; + line++; + } + } + + return paths; +} + +char* _glfw_strdup(const char* source) +{ + const size_t length = strlen(source); + char* result = calloc(length + 1, 1); + strcpy(result, source); + return result; +} + +int _glfw_min(int a, int b) +{ + return a < b ? a : b; +} + +int _glfw_max(int a, int b) +{ + return a > b ? a : b; +} + +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); + + _glfwInitGamepadMappings(); + + _glfw.initialized = GLFW_TRUE; + _glfw.timer.offset = _glfwPlatformGetTimerValue(); + + glfwDefaultWindowHints(); + 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; +} + |