/*

 * 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.

 */

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

#include <windows.h>

static BOOL fontSmoothingEnabled = FALSE;

static void saveInitialSettings(void)

{

    ::SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &fontSmoothingEnabled, 0);

}

// Technically, all we need to do is disable ClearType. However,

// for some reason, the call to SPI_SETFONTSMOOTHINGTYPE doesn't

// seem to work, so we just disable font smoothing all together

// (which works reliably)

static void installLayoutTestSettings(void)

{

    ::SystemParametersInfo(SPI_SETFONTSMOOTHING, FALSE, 0, 0);

}

static void restoreInitialSettings(void)

{

    ::SystemParametersInfo(SPI_SETFONTSMOOTHING, static_cast<UINT>(fontSmoothingEnabled), 0, 0);

}

static void simpleSignalHandler(int signalNumber)

{

    // Try to restore the settings and then go down cleanly

    restoreInitialSettings();

    exit(128 + signalNumber);

}

int main(int, char*[])

{

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

    signal(SIGINT, simpleSignalHandler);

    signal(SIGTERM, simpleSignalHandler);

    saveInitialSettings();

    installLayoutTestSettings();

    // Let the script know we're ready

    printf("ready\n");

    fflush(stdout);

    // Wait for any key (or signal)

    getchar();

    restoreInitialSettings();

    return EXIT_SUCCESS;

}