components/test_runner/helper/layout_test_helper_win.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <signal.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <windows.h>
   9
  10 static BOOL font_smoothing_enabled = FALSE;
  11
  12 static void SaveInitialSettings() {
  13   ::SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &font_smoothing_enabled, 0);
  14 }
  15
  16 // Technically, all we need to do is disable ClearType. However,
  17 // for some reason, the call to SPI_SETFONTSMOOTHINGTYPE doesn't
  18 // seem to work, so we just disable font smoothing all together
  19 // (which works reliably).
  20 static void InstallLayoutTestSettings() {
  21   ::SystemParametersInfo(SPI_SETFONTSMOOTHING, FALSE, 0, 0);
  22 }
  23
  24 static void RestoreInitialSettings() {
  25   ::SystemParametersInfo(
  26       SPI_SETFONTSMOOTHING, static_cast<UINT>(font_smoothing_enabled), 0, 0);
  27 }
  28
  29 static void SimpleSignalHandler(int signalNumber) {
  30   // Try to restore the settings and then go down cleanly.
  31   RestoreInitialSettings();
  32   exit(128 + signalNumber);
  33 }
  34
  35 int main(int, char**) {
  36   // Hooks the ways we might get told to clean up...
  37   signal(SIGINT, SimpleSignalHandler);
  38   signal(SIGTERM, SimpleSignalHandler);
  39
  40   SaveInitialSettings();
  41
  42   InstallLayoutTestSettings();
  43
  44   // Let the script know we're ready.
  45   printf("ready\n");
  46   fflush(stdout);
  47
  48   // Wait for any key (or signal).
  49   getchar();
  50
  51   RestoreInitialSettings();
  52
  53   return EXIT_SUCCESS;
  54 }