layout/tables/nsITableLayoutStrategy.h
author Marco Zehe <mzehe@mozilla.com>
Fri, 19 Oct 2018 08:18:04 +0000
changeset 442128 295644de04d2b1abbccd102473cbf3023dfce21a
parent 363673 5e5dda793c3e0a93fa8a0f2c377dcb28a113e3e7
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1492393 - Make our table index methods aware of cells spanning multiple columns, r=surkov Sometimes, when cells have display:block, and a different cell in the same row has a column span, our index methods did not take these into account. Also, when regular tables encounter such a cell, index calculation failed. Differential Revision: https://phabricator.services.mozilla.com/D7867

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:ts=4:et:sw=4:
/* 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/. */

/*
 * interface for the set of algorithms that determine column and table
 * isizes
 */

#ifndef nsITableLayoutStrategy_h_
#define nsITableLayoutStrategy_h_

#include "nscore.h"
#include "nsCoord.h"

class gfxContext;
namespace mozilla {
struct ReflowInput;
} // namespace mozilla

class nsITableLayoutStrategy
{
public:
    using ReflowInput = mozilla::ReflowInput;

    virtual ~nsITableLayoutStrategy() {}

    /** Implement nsIFrame::GetMinISize for the table */
    virtual nscoord GetMinISize(gfxContext* aRenderingContext) = 0;

    /** Implement nsIFrame::GetPrefISize for the table */
    virtual nscoord GetPrefISize(gfxContext* aRenderingContext,
                                 bool aComputingSize) = 0;

    /** Implement nsIFrame::MarkIntrinsicISizesDirty for the table */
    virtual void MarkIntrinsicISizesDirty() = 0;

    /**
     * Compute final column isizes based on the intrinsic isize data and
     * the available isize.
     */
    virtual void ComputeColumnISizes(const ReflowInput& aReflowInput) = 0;

    /**
     * Return the type of table layout strategy, without the cost of
     * a virtual function call
     */
    enum Type { Auto, Fixed };
    Type GetType() const { return mType; }

protected:
    explicit nsITableLayoutStrategy(Type aType) : mType(aType) {}
private:
    Type mType;
};

#endif /* !defined(nsITableLayoutStrategy_h_) */