blob: 7d3678fac26de53881ed1d2f828aa68ce913cdc6 [file] [log] [blame]
//========================================================================
// GLFW 3.3 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2016 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.
//
//========================================================================
#include "internal.h"
#include "mappings.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
// The global variables below comprise all 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
},
{
"", // X11 WM_CLASS name
"" // X11 WM_CLASS class
}
};
// Returns a generic string representation of the specified error
//
static const char* getErrorString(int code)
{
switch (code)
{
case GLFW_NOT_INITIALIZED:
return "The GLFW library is not initialized";
case GLFW_NO_CURRENT_CONTEXT:
return "There is no current context";
case GLFW_INVALID_ENUM:
return "Invalid argument for enum parameter";
case GLFW_INVALID_VALUE:
return "Invalid value for parameter";
case GLFW_OUT_OF_MEMORY:
return "Out of memory";
case GLFW_API_UNAVAILABLE:
return "The requested API is unavailable";
case GLFW_VERSION_UNAVAILABLE:
return "The requested API version is unavailable";
case GLFW_PLATFORM_ERROR:
return "An undocumented platform-specific error occurred";
case GLFW_FORMAT_UNAVAILABLE:
return "The requested format is unavailable";
case GLFW_NO_WINDOW_CONTEXT:
return "The specified window has no context";
default:
return "ERROR: UNKNOWN GLFW ERROR";
}
}
// 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 event API //////
//////////////////////////////////////////////////////////////////////////
void _glfwInputError(int code, const char* format, ...)
{
_GLFWerror* error;
char description[_GLFW_MESSAGE_SIZE];
if (format)
{
int count;
va_list vl;
va_start(vl, format);
count = vsnprintf(description, sizeof(description), format, vl);
va_end(vl);
if (count < 0)
description[sizeof(description) - 1] = '\0';
}
else
strcpy(description, getErrorString(code));
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))
return GLFW_FALSE;
if (!_glfwPlatformCreateTls(&_glfw.errorSlot))
return GLFW_FALSE;
if (!_glfwPlatformCreateTls(&_glfw.contextSlot))
return GLFW_FALSE;
_glfwPlatformSetTls(&_glfw.errorSlot, &_glfwMainThreadError);
_glfw.initialized = GLFW_TRUE;
_glfw.timer.offset = _glfwPlatformGetTimerValue();
glfwDefaultWindowHints();
glfwUpdateGamepadMappings(_glfwDefaultMappings);
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 integer type init hint 0x%08X", hint);
}
GLFWAPI void glfwInitHintString(int hint, const char* value)
{
assert(value != NULL);
switch (hint)
{
case GLFW_X11_WM_CLASS_NAME:
strncpy(_glfwInitHints.x11.className, value,
sizeof(_glfwInitHints.x11.className) - 1);
break;
case GLFW_X11_WM_CLASS_CLASS:
strncpy(_glfwInitHints.x11.classClass, value,
sizeof(_glfwInitHints.x11.classClass) - 1);
break;
}
_glfwInputError(GLFW_INVALID_ENUM,
"Invalid string type 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;
}