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//========================================================================
// GLFW 3.2 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2016 Camilla Berglund <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 <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
// The three global variables below comprise all global data in GLFW.
// Any other global variable is a bug.
// Global state shared between compilation units of GLFW
// These are documented in internal.h
//
GLFWbool _glfwInitialized = GLFW_FALSE;
_GLFWlibrary _glfw;
// This is outside of _glfw so it can be initialized and usable before
// glfwInit is called, which lets that function report errors
//
static GLFWerrorfun _glfwErrorCallback = NULL;
// Returns a generic string representation of the specified error
//
static const char* getErrorString(int error)
{
switch (error)
{
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 "A 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";
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW event API //////
//////////////////////////////////////////////////////////////////////////
void _glfwInputError(int error, const char* format, ...)
{
if (_glfwErrorCallback)
{
char buffer[8192];
const char* description;
if (format)
{
int count;
va_list vl;
va_start(vl, format);
count = vsnprintf(buffer, sizeof(buffer), format, vl);
va_end(vl);
if (count < 0)
buffer[sizeof(buffer) - 1] = '\0';
description = buffer;
}
else
description = getErrorString(error);
_glfwErrorCallback(error, description);
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW public API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI int glfwInit(void)
{
if (_glfwInitialized)
return GLFW_TRUE;
memset(&_glfw, 0, sizeof(_glfw));
if (!_glfwPlatformInit())
{
_glfwPlatformTerminate();
return GLFW_FALSE;
}
_glfw.monitors = _glfwPlatformGetMonitors(&_glfw.monitorCount);
_glfwInitialized = GLFW_TRUE;
_glfw.timerOffset = _glfwPlatformGetTimerValue();
// Not all window hints have zero as their default value
glfwDefaultWindowHints();
return GLFW_TRUE;
}
GLFWAPI void glfwTerminate(void)
{
int i;
if (!_glfwInitialized)
return;
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);
}
_glfwTerminateVulkan();
_glfwFreeMonitors(_glfw.monitors, _glfw.monitorCount);
_glfw.monitors = NULL;
_glfw.monitorCount = 0;
_glfwPlatformTerminate();
memset(&_glfw, 0, sizeof(_glfw));
_glfwInitialized = GLFW_FALSE;
}
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 GLFWerrorfun glfwSetErrorCallback(GLFWerrorfun cbfun)
{
_GLFW_SWAP_POINTERS(_glfwErrorCallback, cbfun);
return cbfun;
}
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