1 /*

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

     3  *

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

     5  * modification, are permitted provided that the following conditions are

     6  * met:

     7  *

     8  *     * Redistributions of source code must retain the above copyright

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

    10  *     * Redistributions in binary form must reproduce the above

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

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

    13  * distribution.

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

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

    16  * this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

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

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

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

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

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

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

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

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

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

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

    29  */

    30 

    31 #include <signal.h>

    32 #include <stdio.h>

    33 #include <stdlib.h>

    34 #include <windows.h>

    35 

    36 static BOOL fontSmoothingEnabled = FALSE;

    37 

    38 static void saveInitialSettings(void)

    39 {

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

    41 }

    42 

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

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

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

    46 // (which works reliably)

    47 static void installLayoutTestSettings(void)

    48 {

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

    50 }

    51 

    52 static void restoreInitialSettings(void)

    53 {

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

    55 }

    56 

    57 static void simpleSignalHandler(int signalNumber)

    58 {

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

    60     restoreInitialSettings();

    61     exit(128 + signalNumber);

    62 }

    63 

    64 int main(int, char*[])

    65 {

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

    67     signal(SIGINT, simpleSignalHandler);

    68     signal(SIGTERM, simpleSignalHandler);

    69 

    70     saveInitialSettings();

    71 

    72     installLayoutTestSettings();

    73 

    74     // Let the script know we're ready

    75     printf("ready\n");

    76     fflush(stdout);

    77 

    78     // Wait for any key (or signal)

    79     getchar();

    80 

    81     restoreInitialSettings();

    82 

    83     return EXIT_SUCCESS;

    84 }