//========================================================================
// GLFW - An OpenGL framework
// File:        fullscreen.c
// Platform:    Any
// API version: 2.7
// WWW:         http://glfw.sourceforge.net
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Camilla Berglund
//
// 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"


//************************************************************************
//****                    GLFW user functions                         ****
//************************************************************************

//========================================================================
// glfwGetVideoModes() - Get a list of available video modes
//========================================================================

GLFWAPI int GLFWAPIENTRY glfwGetVideoModes( GLFWvidmode *list,
    int maxcount )
{
    int         count, i, swap, res1, res2, depth1, depth2;
    GLFWvidmode vm;

    if( !_glfwInitialized || maxcount <= 0 || list == (GLFWvidmode*) 0 )
    {
        return 0;
    }

    // Get list of video modes
    count = _glfwPlatformGetVideoModes( list, maxcount );

    // Sort list (bubble sort)
    do
    {
        swap = 0;
        for( i = 0; i < count-1; ++ i )
        {
            res1   = list[i].Width*list[i].Height;
            depth1 = list[i].RedBits+list[i].GreenBits+list[i].BlueBits;
            res2   = list[i+1].Width*list[i+1].Height;
            depth2 = list[i+1].RedBits+list[i+1].GreenBits+
                     list[i+1].BlueBits;
            if( (depth2<depth1) || ((depth2==depth1) && (res2<res1)) )
            {
                vm = list[i];
                list[i] = list[i+1];
                list[i+1] = vm;
                swap = 1;
            }
        }
    }
    while( swap );

    return count;
}


//========================================================================
// glfwGetDesktopMode() - Get the desktop video mode
//========================================================================

GLFWAPI void GLFWAPIENTRY glfwGetDesktopMode( GLFWvidmode *mode )
{
    if( !_glfwInitialized || mode == (GLFWvidmode*) 0 )
    {
        return;
    }

    _glfwPlatformGetDesktopMode( mode );
}