nsCocoaFeatures.mm

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 * The Original Code is thebes gfx code.
 *
 * The Initial Developer of the Original Code is Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Benoit Girard <bgirard@mozilla.com>
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
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#define MAC_OS_X_VERSION_MASK     0x0000FFFF // Not supported
#define MAC_OS_X_VERSION_10_4_HEX 0x00001040 // Not supported
#define MAC_OS_X_VERSION_10_5_HEX 0x00001050
#define MAC_OS_X_VERSION_10_6_HEX 0x00001060
#define MAC_OS_X_VERSION_10_7_HEX 0x00001070

// This API will not work for OS X 10.10, see Gestalt.h.

#include "nsCocoaFeatures.h"
#include "nsDebug.h"

#import <Cocoa/Cocoa.h>

PRInt32 nsCocoaFeatures::mOSXVersion = 0;

/* static */ PRInt32
nsCocoaFeatures::OSXVersion()
{
    if (!mOSXVersion) {
        // minor version is not accurate, use gestaltSystemVersionMajor, 
        // gestaltSystemVersionMinor, gestaltSystemVersionBugFix for these
        OSErr err = ::Gestalt(gestaltSystemVersion, reinterpret_cast<SInt32*>(&mOSXVersion));
        if (err != noErr) {
            // This should probably be changed when our minimum version changes
            NS_ERROR("Couldn't determine OS X version, assuming 10.5");
            mOSXVersion = MAC_OS_X_VERSION_10_5_HEX;
        }
        mOSXVersion &= MAC_OS_X_VERSION_MASK;
    }
    return mOSXVersion;
}

/* static */ bool
nsCocoaFeatures::SupportCoreAnimationPlugins()
{
    // Disallow Core Animation on 10.5 because of crashes.
    // See Bug 711564.
    return (OSXVersion() >= MAC_OS_X_VERSION_10_6_HEX);
}

/* static */ bool
nsCocoaFeatures::OnSnowLeopardOrLater()
{
    return (OSXVersion() >= MAC_OS_X_VERSION_10_6_HEX);
}

/* static */ bool
nsCocoaFeatures::OnLionOrLater()
{
    return (OSXVersion() >= MAC_OS_X_VERSION_10_7_HEX);
}