/*

 * Copyright (C) 2010 Google Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following disclaimer

 * in the documentation and/or other materials provided with the

 * distribution.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#import <AppKit/AppKit.h>

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

// This is a simple helper app that changes the color sync profile to the

// generic profile and back when done.  This program is managed by the layout

// test script, so it can do the job for multiple DumpRenderTree while they are

// running layout tests.

static CMProfileRef userColorProfile = 0;

static void saveCurrentColorProfile()

{

    CGDirectDisplayID displayID = CGMainDisplayID();

    CMProfileRef previousProfile;

    CMError error = CMGetProfileByAVID((UInt32)displayID, &previousProfile);

    if (error) {

        NSLog(@"failed to get the current color profile, pixmaps won't match. "

              @"Error: %d", (int)error);

    } else {

        userColorProfile = previousProfile;

    }

}

static void installLayoutTestColorProfile()

{

    // To make sure we get consistent colors (not dependent on the Main display),

    // we force the generic rgb color profile.  This cases a change the user can

    // see.

    CGDirectDisplayID displayID = CGMainDisplayID();

    NSColorSpace* genericSpace = [NSColorSpace genericRGBColorSpace];

    CMProfileRef genericProfile = (CMProfileRef)[genericSpace colorSyncProfile];

    CMError error = CMSetProfileByAVID((UInt32)displayID, genericProfile);

    if (error) {

        NSLog(@"failed install the generic color profile, pixmaps won't match. "

              @"Error: %d", (int)error);

    }

}

static void restoreUserColorProfile(void)

{

    if (!userColorProfile)

        return;

    CGDirectDisplayID displayID = CGMainDisplayID();

    CMError error = CMSetProfileByAVID((UInt32)displayID, userColorProfile);

    CMCloseProfile(userColorProfile);

    if (error) {

        NSLog(@"Failed to restore color profile, use System Preferences -> "

              @"Displays -> Color to reset. Error: %d", (int)error);

    }

    userColorProfile = 0;

}

static void simpleSignalHandler(int sig)

{

    // Try to restore the color profile and try to go down cleanly

    restoreUserColorProfile();

    exit(128 + sig);

}

int main(int argc, char* argv[])

{

    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];

    // Hooks the ways we might get told to clean up...

    signal(SIGINT, simpleSignalHandler);

    signal(SIGHUP, simpleSignalHandler);

    signal(SIGTERM, simpleSignalHandler);

    // Save off the current profile, and then install the layout test profile.

    saveCurrentColorProfile();

    installLayoutTestColorProfile();

    // Let the script know we're ready

    printf("ready\n");

    fflush(stdout);

    // Wait for any key (or signal)

    getchar();

    // Restore the profile

    restoreUserColorProfile();

    [pool release];

    return 0;

}