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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2015 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/OSX/cg_sf_conversion.hpp>
#include <SFML/System/Err.hpp>
namespace sf
{
namespace priv
{
////////////////////////////////////////////////////////////
size_t modeBitsPerPixel(CGDisplayModeRef mode)
{
size_t bpp = 0; // no match
// Compare encoding.
CFStringRef pixEnc = CGDisplayModeCopyPixelEncoding(mode);
if(CFStringCompare(pixEnc, CFSTR(IO32BitDirectPixels), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
bpp = 32;
else if(CFStringCompare(pixEnc, CFSTR(IO16BitDirectPixels), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
bpp = 16;
else if(CFStringCompare(pixEnc, CFSTR(IO8BitIndexedPixels), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
bpp = 8;
// Clean up memory.
CFRelease(pixEnc);
return bpp;
}
////////////////////////////////////////////////////////////
size_t displayBitsPerPixel(CGDirectDisplayID displayId)
{
// Get the display mode.
CGDisplayModeRef mode = CGDisplayCopyDisplayMode(displayId);
// Get bpp for the mode.
const size_t bpp = modeBitsPerPixel(mode);
// Clean up Memory.
CGDisplayModeRelease(mode);
return bpp;
}
////////////////////////////////////////////////////////////
VideoMode convertCGModeToSFMode(CGDisplayModeRef cgmode)
{
return VideoMode(CGDisplayModeGetWidth(cgmode),
CGDisplayModeGetHeight(cgmode),
modeBitsPerPixel(cgmode));
}
////////////////////////////////////////////////////////////
CGDisplayModeRef convertSFModeToCGMode(VideoMode sfmode)
{
// Starting with 10.6 we should query the display all the modes and
// search for the best one.
// Will return NULL if sfmode is not in VideoMode::GetFullscreenModes.
CGDisplayModeRef cgbestMode = NULL;
// Retrieve all modes available for main screen only.
CFArrayRef cgmodes = CGDisplayCopyAllDisplayModes(CGMainDisplayID(), NULL);
if (cgmodes == NULL) // Should not happen but anyway...
{
sf::err() << "Couldn't get VideoMode for main display.";
return NULL;
}
// 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);
if (mode == sfmode)
cgbestMode = cgmode;
}
// Clean up memory.
CFRelease(cgmodes);
if (cgbestMode == NULL)
sf::err() << "Couldn't convert the given sf:VideoMode into a CGDisplayMode."
<< std::endl;
return cgbestMode;
}
} // namespace priv
} // namespace sf
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