1 files changed, 112 insertions, 0 deletions
diff --git a/testing/tools/screenshot/win32-screenshot.cpp b/testing/tools/screenshot/win32-screenshot.cpp
new file mode 100644
index 0000000000..29cc1fb5e8
--- /dev/null
+++ b/testing/tools/screenshot/win32-screenshot.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2009, The Mozilla Foundation
+ * 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 the Mozilla Foundation 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 Mozilla Foundation ''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 Mozilla Foundation 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.
+ *
+ * Contributors:
+ *   Ted Mielczarek <ted.mielczarek@gmail.com>
+ */
+/*
+ * win32-screenshot.cpp: Save a screenshot of the Windows desktop in .png
+ * format. If a filename is specified as the first argument on the commandline,
+ *  then the image will be saved to that filename. Otherwise, the image will
+ *  be saved as "screenshot.png" in the current working directory.
+ */
+
+// VS2015: Platform SDK 8.1's GdiplusTypes.h uses the min macro
+#undef NOMINMAX
+#undef WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <gdiplus.h>
+
+// Link w/ subsystem windows so we don't get a console when executing
+// this binary.
+#ifndef __MINGW32__
+#  pragma comment(linker, "/SUBSYSTEM:windows /ENTRY:wmainCRTStartup")
+#endif
+
+using namespace Gdiplus;
+
+// From http://msdn.microsoft.com/en-us/library/ms533843%28VS.85%29.aspx
+static int GetEncoderClsid(const WCHAR* format, CLSID* pClsid) {
+  UINT num = 0;   // number of image encoders
+  UINT size = 0;  // size of the image encoder array in bytes
+
+  ImageCodecInfo* pImageCodecInfo = nullptr;
+
+  GetImageEncodersSize(&num, &size);
+  if (size == 0) return -1;  // Failure
+
+  pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
+  if (pImageCodecInfo == nullptr) return -1;  // Failure
+
+  GetImageEncoders(num, size, pImageCodecInfo);
+
+  for (UINT j = 0; j < num; ++j) {
+    if (wcscmp(pImageCodecInfo[j].MimeType, format) == 0) {
+      *pClsid = pImageCodecInfo[j].Clsid;
+      free(pImageCodecInfo);
+      return j;  // Success
+    }
+  }
+
+  free(pImageCodecInfo);
+  return -1;  // Failure
+}
+
+#ifdef __MINGW32__
+extern "C"
+#endif
+    int
+    wmain(int argc, wchar_t** argv) {
+  GdiplusStartupInput gdiplusStartupInput;
+  ULONG_PTR gdiplusToken;
+  GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, nullptr);
+
+  HWND desktop = GetDesktopWindow();
+  HDC desktopdc = GetDC(desktop);
+  HDC mydc = CreateCompatibleDC(desktopdc);
+  int width = GetSystemMetrics(SM_CXSCREEN);
+  int height = GetSystemMetrics(SM_CYSCREEN);
+  HBITMAP mybmp = CreateCompatibleBitmap(desktopdc, width, height);
+  HBITMAP oldbmp = (HBITMAP)SelectObject(mydc, mybmp);
+  BitBlt(mydc, 0, 0, width, height, desktopdc, 0, 0, SRCCOPY | CAPTUREBLT);
+  SelectObject(mydc, oldbmp);
+
+  const wchar_t* filename = (argc > 1) ? argv[1] : L"screenshot.png";
+  Bitmap* b = Bitmap::FromHBITMAP(mybmp, nullptr);
+  CLSID encoderClsid;
+  Status stat = GenericError;
+  if (b && GetEncoderClsid(L"image/png", &encoderClsid) != -1) {
+    stat = b->Save(filename, &encoderClsid, nullptr);
+  }
+  if (b) delete b;
+
+  // cleanup
+  GdiplusShutdown(gdiplusToken);
+  ReleaseDC(desktop, desktopdc);
+  DeleteObject(mybmp);
+  DeleteDC(mydc);
+  return stat == Ok ? 0 : 1;
+}