ui/views/window/window_shape.cc

// Copyright (c) 2011 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/views/window/window_shape.h"

#include "third_party/skia/include/core/SkPath.h"
#include "ui/gfx/geometry/size.h"

namespace views {

void GetDefaultWindowMask(const gfx::Size& size,
                          SkPath* window_mask) {
  const SkScalar width = SkIntToScalar(size.width());
  const SkScalar height = SkIntToScalar(size.height());

  window_mask->moveTo(0, 3);
  window_mask->lineTo(1, 3);
  window_mask->lineTo(1, 1);
  window_mask->lineTo(3, 1);
  window_mask->lineTo(3, 0);

  window_mask->lineTo(width - 3, 0);
  window_mask->lineTo(width - 3, 1);
  window_mask->lineTo(width - 1, 1);
  window_mask->lineTo(width - 1, 3);
  window_mask->lineTo(width, 3);

  window_mask->lineTo(width, height - 3);
  window_mask->lineTo(width - 1, height - 3);
  window_mask->lineTo(width - 1, height - 1);
  window_mask->lineTo(width - 3, height - 1);
  window_mask->lineTo(width - 3, height);

  window_mask->lineTo(3, height);
  window_mask->lineTo(3, height - 1);
  window_mask->lineTo(1, height - 1);
  window_mask->lineTo(1, height - 3);
  window_mask->lineTo(0, height - 3);

  window_mask->close();
}

}  // namespace views