content: Copy layout test helpers from Blink to Chromium.

content/shell/renderer/test_runner/helper/LayoutTestHelperWin.cpp

+/*

[jochen (gone - plz use gerrit), 2014/01/03 13:16:52]

please replace this header with a chromium-style copyright header.

[tfarina, 2014/01/03 13:58:06]

Done.

+ * 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;
+}