/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef __NS_CSSCLIPPATHINSTANCE_H__

#define __NS_CSSCLIPPATHINSTANCE_H__

#include "nsStyleStruct.h"

#include "nsRect.h"

#include "mozilla/gfx/2D.h"

class nsIFrame;

class gfxContext;

namespace mozilla {

class nsCSSClipPathInstance

{

  typedef mozilla::gfx::DrawTarget DrawTarget;

  typedef mozilla::gfx::Path Path;

  typedef mozilla::gfx::Rect Rect;

public:

  static void ApplyBasicShapeOrPathClip(gfxContext& aContext,

                                        nsIFrame* aFrame);

  // aPoint is in CSS pixels.

  static bool HitTestBasicShapeOrPathClip(nsIFrame* aFrame,

                                          const gfxPoint& aPoint);

  static Rect GetBoundingRectForBasicShapeOrPathClip(

    nsIFrame* aFrame,

    const StyleShapeSource& aClipPathStyle);

private:

  explicit nsCSSClipPathInstance(nsIFrame* aFrame,

                                 const StyleShapeSource aClipPathStyle)

    : mTargetFrame(aFrame)

    , mClipPathStyle(aClipPathStyle)

  {

  }

  already_AddRefed<Path> CreateClipPath(DrawTarget* aDrawTarget);

  already_AddRefed<Path> CreateClipPathCircle(DrawTarget* aDrawTarget,

                                              const nsRect& aRefBox);

  already_AddRefed<Path> CreateClipPathEllipse(DrawTarget* aDrawTarget,

                                               const nsRect& aRefBox);

  already_AddRefed<Path> CreateClipPathPolygon(DrawTarget* aDrawTarget,

                                               const nsRect& aRefBox);

  already_AddRefed<Path> CreateClipPathInset(DrawTarget* aDrawTarget,

                                             const nsRect& aRefBox);

  already_AddRefed<Path> CreateClipPathPath(DrawTarget* aDrawTarget);

  /**

   * The frame for the element that is currently being clipped.

   */

  nsIFrame* mTargetFrame;

  StyleShapeSource mClipPathStyle;

};

} // namespace mozilla

#endif