gfx/src/RegionBuilder.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  *  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  *  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef RegionBuilder_h__
   8 #define RegionBuilder_h__
   9
  10 #include "nsTArray.h"
  11 #include "pixman.h"
  12
  13 template <typename RegionType>
  14 class RegionBuilder {
  15  public:
  16   typedef typename RegionType::RectType RectType;
  17
  18   RegionBuilder() = default;
  19
  20   void OrWith(const RectType& aRect) {
  21     pixman_box32_t box = {aRect.X(), aRect.Y(), aRect.XMost(), aRect.YMost()};
  22     mRects.AppendElement(box);
  23   }
  24
  25   RegionType ToRegion() const { return RegionType(mRects); }
  26
  27  private:
  28   nsTArray<pixman_box32_t> mRects;
  29 };
  30
  31 #endif  // RegionBuilder_h__