////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2017 Marco Antognini (antognini.marco@gmail.com),
//                         Laurent Gomila (laurent@sfml-dev.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.
//
////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Window/VideoModeImpl.hpp>
#include <SFML/Window/OSX/cg_sf_conversion.hpp>
#include <SFML/System/Err.hpp>
#include <algorithm>

namespace sf
{
namespace priv
{

////////////////////////////////////////////////////////////
std::vector<VideoMode> VideoModeImpl::getFullscreenModes()
{
    std::vector<VideoMode> modes;

    // Retrieve all modes available for main screen only.
    CFArrayRef cgmodes = CGDisplayCopyAllDisplayModes(CGMainDisplayID(), NULL);

    if (cgmodes == NULL)
    {
        sf::err() << "Couldn't get VideoMode for main display." << std::endl;
        return modes;
    }

    VideoMode desktop = getDesktopMode();

    // Loop on each mode and convert it into a sf::VideoMode object.
    const CFIndex modesCount = CFArrayGetCount(cgmodes);
    for (CFIndex i = 0; i < modesCount; i++)
    {
        CGDisplayModeRef cgmode = (CGDisplayModeRef)CFArrayGetValueAtIndex(cgmodes, i);

        VideoMode mode = convertCGModeToSFMode(cgmode);

        // Skip if bigger than desktop as we currently don't perform hard resolution switch
        if ((mode.width > desktop.width) || (mode.height > desktop.height))
            continue;

        // If not yet listed we add it to our modes array.
        if (std::find(modes.begin(), modes.end(), mode) == modes.end())
            modes.push_back(mode);
    }

    // Clean up memory.
    CFRelease(cgmodes);

    return modes;
}


////////////////////////////////////////////////////////////
VideoMode VideoModeImpl::getDesktopMode()
{
    VideoMode mode; // RVO

    // Rely exclusively on mode and convertCGModeToSFMode
    // instead of display id and CGDisplayPixelsHigh/Wide.

    CGDirectDisplayID display = CGMainDisplayID();
    CGDisplayModeRef cgmode = CGDisplayCopyDisplayMode(display);

    mode = convertCGModeToSFMode(cgmode);

    CGDisplayModeRelease(cgmode);

    return mode;
}

} // namespace priv
} // namespace sf

