1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/grid/nsGridRowGroupFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,63 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +//
1.10 +// Eric Vaughan
1.11 +// Netscape Communications
1.12 +//
1.13 +// See documentation in associated header file
1.14 +//
1.15 +
1.16 +#include "nsGridRowGroupFrame.h"
1.17 +#include "nsGridRowLeafLayout.h"
1.18 +#include "nsGridRow.h"
1.19 +#include "nsBoxLayoutState.h"
1.20 +#include "nsGridLayout2.h"
1.21 +
1.22 +already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout();
1.23 +
1.24 +nsIFrame*
1.25 +NS_NewGridRowGroupFrame(nsIPresShell* aPresShell,
1.26 + nsStyleContext* aContext)
1.27 +{
1.28 + nsCOMPtr<nsBoxLayout> layout = NS_NewGridRowGroupLayout();
1.29 + return new (aPresShell) nsGridRowGroupFrame(aPresShell, aContext, layout);
1.30 +}
1.31 +
1.32 +NS_IMPL_FRAMEARENA_HELPERS(nsGridRowGroupFrame)
1.33 +
1.34 +
1.35 +/**
1.36 + * This is redefined because row groups have a funny property. If they are flexible
1.37 + * then their flex must be equal to the sum of their children's flexes.
1.38 + */
1.39 +nscoord
1.40 +nsGridRowGroupFrame::GetFlex(nsBoxLayoutState& aState)
1.41 +{
1.42 + // if we are flexible out flexibility is determined by our columns.
1.43 + // so first get the our flex. If not 0 then our flex is the sum of
1.44 + // our columns flexes.
1.45 +
1.46 + if (!DoesNeedRecalc(mFlex))
1.47 + return mFlex;
1.48 +
1.49 + if (nsBoxFrame::GetFlex(aState) == 0)
1.50 + return 0;
1.51 +
1.52 + // ok we are flexible add up our children
1.53 + nscoord totalFlex = 0;
1.54 + nsIFrame* child = GetChildBox();
1.55 + while (child)
1.56 + {
1.57 + totalFlex += child->GetFlex(aState);
1.58 + child = child->GetNextBox();
1.59 + }
1.60 +
1.61 + mFlex = totalFlex;
1.62 +
1.63 + return totalFlex;
1.64 +}
1.65 +
1.66 +
