nsLeafFrame.h - mozsearch

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/* -*- 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/. */

/* base class for rendering objects that do not have child lists */

#ifndef nsLeafFrame_h___

#define nsLeafFrame_h___

#include "mozilla/Attributes.h"

#include "nsIFrame.h"

#include "nsDisplayList.h"

/**

 * Abstract class that provides simple fixed-size layout for leaf objects.

*/

class nsLeafFrame : public nsIFrame {

 public:

  NS_DECL_ABSTRACT_FRAME(nsLeafFrame)

  // nsIFrame replacements

  void BuildDisplayList(nsDisplayListBuilder* aBuilder,

                        const nsDisplayListSet& aLists) override;

/**

   * Both GetMinISize and GetPrefISize will return our intrinsic inline size.

*/

  nscoord GetMinISize(gfxContext* aRenderingContext) override;

  nscoord GetPrefISize(gfxContext* aRenderingContext) override;

/**

   * Our auto size is just the intrinsic size.

*/

  mozilla::LogicalSize ComputeAutoSize(

      gfxContext* aRenderingContext, mozilla::WritingMode aWM,

      const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,

      const mozilla::LogicalSize& aMargin,

      const mozilla::LogicalSize& aBorderPadding,

      const mozilla::StyleSizeOverrides& aSizeOverrides,

      mozilla::ComputeSizeFlags aFlags) override;

/**

   * Each of our subclasses should provide its own Reflow impl:

*/

  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,

              const ReflowInput& aReflowInput,

              nsReflowStatus& aStatus) override = 0;

 protected:

  nsLeafFrame(ComputedStyle* aStyle, nsPresContext* aPresContext, ClassID aID)

      : nsIFrame(aStyle, aPresContext, aID) {}

  virtual ~nsLeafFrame();

};

#endif /* nsLeafFrame_h___ */