src_gui_kernel_qlayoutitem.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
int MyLayout::heightForWidth(int w) const
{
    if (cache_dirty || cached_width != w) {
        MyLayout *that = const_cast<MyLayout *>(this);
        int h = calculateHeightForWidth(w);
        that->cached_hfw = h;
        return h;
    }
    return cached_hfw;
}