basic nc paint, moving, resizing for views_examples_exe on win

ui/gfx/gdi_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/gdi_util.h"
 
+#include "base/memory/scoped_ptr.h"
+
 namespace gfx {
 
 void CreateBitmapHeader(int width, int height, BITMAPINFOHEADER* hdr) {
   CreateBitmapHeaderWithColorDepth(width, height, 32, hdr);
 }
 
 void CreateBitmapHeaderWithColorDepth(int width, int height, int color_depth,
                                       BITMAPINFOHEADER* hdr) {
   // These values are shared with gfx::PlatformDevice
   hdr->biSize = sizeof(BITMAPINFOHEADER);
@@ skipping 52 matching lines @@
                    cutouts[i].x(),
                    cutouts[i].y(),
                    cutouts[i].right(),
                    cutouts[i].bottom());
       ::CombineRgn(hrgn, hrgn, cutout, RGN_DIFF);
     }
     ::DeleteObject(cutout);
   }
 }
 
+HRGN ConvertPathToHRGN(const gfx::Path& path) {
+#if defined(USE_AURA)
+  int point_count = path.getPoints(NULL, 0);
+  scoped_array<SkPoint> points(new SkPoint[point_count]);
+  path.getPoints(points.get(), point_count);
+  scoped_array<POINT> windows_points(new POINT[point_count]);
+  for (int i = 0; i < point_count; ++i) {
+    windows_points[i].x = SkScalarRound(points[i].fX);
+    windows_points[i].y = SkScalarRound(points[i].fY);
+  }
+
+  return ::CreatePolygonRgn(windows_points.get(), point_count, ALTERNATE);
+#elif defined(OS_WIN)
+  return path.CreateNativeRegion();
+#endif
+}
+
+
 double CalculatePageScale(HDC dc, int page_width, int page_height) {
   int dc_width = GetDeviceCaps(dc, HORZRES);
   int dc_height = GetDeviceCaps(dc, VERTRES);
 
   // If page fits DC - no scaling needed.
   if (dc_width >= page_width && dc_height >= page_height)
     return 1.0;
 
   double x_factor =
       static_cast<double>(dc_width) / static_cast<double>(page_width);
   double y_factor =
       static_cast<double>(dc_height) / static_cast<double>(page_height);
   return std::min(x_factor, y_factor);
 }
 
 // Apply scaling to the DC.
 bool ScaleDC(HDC dc, double scale_factor) {
   SetGraphicsMode(dc, GM_ADVANCED);
   XFORM xform = {0};
   xform.eM11 = xform.eM22 = scale_factor;
   return !!ModifyWorldTransform(dc, &xform, MWT_LEFTMULTIPLY);
 }
 
 }  // namespace gfx