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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 */
/* A namespace class for static muti-column utilities. */
#ifndef mozilla_ColumnUtils_h
#define mozilla_ColumnUtils_h
#include "nsCoord.h"
#include "nsStyleConsts.h"
class nsContainerFrame;
namespace mozilla {
// ColumnUtils is a namespace class containing utility functions used by
// multi-column containers like ColumnSetWrapperFrame and nsColumnSetFrame.
class ColumnUtils final {
// Compute used value of 'column-gap' for aFrame.
static nscoord GetColumnGap(const nsContainerFrame* aFrame,
nscoord aPercentageBasis);
// Clamp used column width to a minimum of 1px.
static nscoord ClampUsedColumnWidth(const Length& aColumnWidth);
// Compute the intrinsic inline-size of a column container, given a non-zero
// column-count, column gap, and column box's inline-size.
static nscoord IntrinsicISize(uint32_t aColCount, nscoord aColGap,
nscoord aColISize);
} // namespace mozilla
#endif // mozilla_ColumnUtils_h