nsBoxLayout.cpp

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 *
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 * 1.1 (the "License"); you may not use this file except in compliance with
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 *
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Pierre Phaneuf <pp@ludusdesign.com>
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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//
// Eric Vaughan
// Netscape Communications
//
// See documentation in associated header file
//

#include "nsBox.h"
#include "nsPresContext.h"
#include "nsCOMPtr.h"
#include "nsIContent.h"
#include "nsHTMLContainerFrame.h"
#include "nsIFrame.h"
#include "nsBoxLayout.h"

nsBoxLayout::nsBoxLayout()
{
}

void
nsBoxLayout::AddBorderAndPadding(nsIBox* aBox, nsSize& aSize)
{
  nsBox::AddBorderAndPadding(aBox, aSize);
}

void
nsBoxLayout::AddMargin(nsIBox* aBox, nsSize& aSize)
{
  nsBox::AddMargin(aBox, aSize);
}

void
nsBoxLayout::AddMargin(nsSize& aSize, const nsMargin& aMargin)
{
  nsBox::AddMargin(aSize, aMargin);
}

nsSize
nsBoxLayout::GetPrefSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState)
{
  nsSize pref (0, 0);
  AddBorderAndPadding(aBox, pref);

  return pref;
}

nsSize
nsBoxLayout::GetMinSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState)
{
  nsSize minSize (0,0);
  AddBorderAndPadding(aBox, minSize);
  return minSize;
}

nsSize
nsBoxLayout::GetMaxSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState)
{
  //AddBorderAndPadding () never changes maxSize (NS_INTRINSICSIZE)
  //AddBorderAndPadding(aBox, maxSize);
  return nsSize (NS_INTRINSICSIZE,NS_INTRINSICSIZE);
}


nscoord
nsBoxLayout::GetAscent(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState)
{
  return 0;
}

NS_IMETHODIMP
nsBoxLayout::Layout(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState)
{
  return NS_OK;
}

void
nsBoxLayout::AddLargestSize(nsSize& aSize, const nsSize& aSize2)
{
  if (aSize2.width > aSize.width)
     aSize.width = aSize2.width;

  if (aSize2.height > aSize.height)
     aSize.height = aSize2.height;
}

void
nsBoxLayout::AddSmallestSize(nsSize& aSize, const nsSize& aSize2)
{
  if (aSize2.width < aSize.width)
     aSize.width = aSize2.width;

  if (aSize2.height < aSize.height)
     aSize.height = aSize2.height;
}

void
nsBoxLayout::ChildrenInserted(nsIBox* aBox, nsBoxLayoutState& aState,
                              nsIBox* aPrevBox,
                              const nsFrameList::Slice& aNewChildren)
{
}

void
nsBoxLayout::ChildrenAppended(nsIBox* aBox, nsBoxLayoutState& aState,
                              const nsFrameList::Slice& aNewChildren)
{
}

void
nsBoxLayout::ChildrenRemoved(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aChildList)
{
}

void
nsBoxLayout::ChildrenSet(nsIBox* aBox, nsBoxLayoutState& aState, nsIBox* aChildList)
{
}

void
nsBoxLayout::IntrinsicWidthsDirty(nsIBox* aBox, nsBoxLayoutState& aState)
{
}

// nsISupports
NS_IMPL_ADDREF(nsBoxLayout)
NS_IMPL_RELEASE(nsBoxLayout)

//
// QueryInterface
//
NS_INTERFACE_MAP_BEGIN(nsBoxLayout)
  NS_INTERFACE_MAP_ENTRY(nsIBoxLayout)
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END