CSSClipPathInstance.h

Enable keyboard shortcuts

/* -*- 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 LAYOUT_SVG_CSSCLIPPATHINSTANCE_H_

#define LAYOUT_SVG_CSSCLIPPATHINSTANCE_H_

#include "gfxMatrix.h"

#include "gfxPoint.h"

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

#include "nsRect.h"

#include "nsStyleStruct.h"

class nsIFrame;

class gfxContext;

namespace mozilla {

class MOZ_STACK_CLASS CSSClipPathInstance {

  using DrawTarget = gfx::DrawTarget;

  using Path = gfx::Path;

  using Rect = gfx::Rect;

 public:

  static void ApplyBasicShapeOrPathClip(gfxContext& aContext, nsIFrame* aFrame,

                                        const gfxMatrix& aTransform);

  static RefPtr<Path> CreateClipPathForFrame(gfx::DrawTarget* aDt,

                                             nsIFrame* aFrame,

                                             const gfxMatrix& aTransform);

  // aPoint is in CSS pixels.

  static bool HitTestBasicShapeOrPathClip(nsIFrame* aFrame,

                                          const gfxPoint& aPoint);

  static Maybe<Rect> GetBoundingRectForBasicShapeOrPathClip(

      nsIFrame* aFrame, const StyleClipPath&);

 private:

  explicit CSSClipPathInstance(nsIFrame* aFrame, const StyleClipPath& aClipPath)

      : mTargetFrame(aFrame), mClipPathStyle(aClipPath) {}

  already_AddRefed<Path> CreateClipPath(DrawTarget* aDrawTarget,

                                        const gfxMatrix& aTransform);

  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,

                                            const nsRect& aRefBox);

  already_AddRefed<Path> CreateClipPathShape(DrawTarget* aDrawTarget,

                                             const nsRect& aRefBox);

/**

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

*/

  nsIFrame* mTargetFrame;

  const StyleClipPath& mClipPathStyle;

};

}  // namespace mozilla

#endif  // LAYOUT_SVG_CSSCLIPPATHINSTANCE_H_