diff options
Diffstat (limited to 'layout/xul/grid/nsGridRowGroupFrame.cpp')
-rw-r--r-- | layout/xul/grid/nsGridRowGroupFrame.cpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/layout/xul/grid/nsGridRowGroupFrame.cpp b/layout/xul/grid/nsGridRowGroupFrame.cpp new file mode 100644 index 000000000..5b72d3753 --- /dev/null +++ b/layout/xul/grid/nsGridRowGroupFrame.cpp @@ -0,0 +1,63 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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/. */ + +// +// Eric Vaughan +// Netscape Communications +// +// See documentation in associated header file +// + +#include "nsGridRowGroupFrame.h" +#include "nsGridRowLeafLayout.h" +#include "nsGridRow.h" +#include "nsBoxLayoutState.h" +#include "nsGridLayout2.h" + +already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout(); + +nsIFrame* +NS_NewGridRowGroupFrame(nsIPresShell* aPresShell, + nsStyleContext* aContext) +{ + nsCOMPtr<nsBoxLayout> layout = NS_NewGridRowGroupLayout(); + return new (aPresShell) nsGridRowGroupFrame(aContext, layout); +} + +NS_IMPL_FRAMEARENA_HELPERS(nsGridRowGroupFrame) + + +/** + * This is redefined because row groups have a funny property. If they are flexible + * then their flex must be equal to the sum of their children's flexes. + */ +nscoord +nsGridRowGroupFrame::GetXULFlex() +{ + // if we are flexible out flexibility is determined by our columns. + // so first get the our flex. If not 0 then our flex is the sum of + // our columns flexes. + + if (!DoesNeedRecalc(mFlex)) + return mFlex; + + if (nsBoxFrame::GetXULFlex() == 0) + return 0; + + // ok we are flexible add up our children + nscoord totalFlex = 0; + nsIFrame* child = nsBox::GetChildXULBox(this); + while (child) + { + totalFlex += child->GetXULFlex(); + child = GetNextXULBox(child); + } + + mFlex = totalFlex; + + return totalFlex; +} + + |