layoutcell.h

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/*
 *  The ManaPlus Client
 *  Copyright (C) 2007-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2019  The ManaPlus Developers
 *  Copyright (C) 2019-2021  Andrei Karas
 *
 *  This file is part of The ManaPlus Client.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef GUI_WIDGETS_LAYOUTCELL_H
#define GUI_WIDGETS_LAYOUTCELL_H
 
#include "localconsts.h"
 
class LayoutArray;
class Widget;
 
class LayoutCell notfinal
{
    friend class Layout;
    friend class LayoutArray;
 
    public:
        A_DEFAULT_COPY(LayoutCell)
 
        enum Alignment
        {
            LEFT = 0,
            RIGHT,
            CENTER,
            FILL
        };
 
        virtual ~LayoutCell();
 
        LayoutCell &setPadding(int p)
        { mHPadding = p; mVPadding = p; return *this; }
 
        int getVPadding() const
        { return mVPadding; }
 
        int getHPadding() const
        { return mHPadding; }
 
        LayoutCell &setVPadding(int p)
        { mVPadding = p; return *this; }
 
        LayoutCell &setHPadding(int p)
        { mHPadding = p; return *this; }
 
        LayoutCell &setHAlign(const Alignment a)
        { mAlign[0] = a; return *this; }
 
        LayoutCell &setVAlign(const Alignment a)
        { mAlign[1] = a; return *this; }
 
        LayoutCell &at(const int x, const int y) A_WARN_UNUSED;
 
        LayoutCell &place(Widget *const wg,
                          const int x,
                          const int y,
                          const int w,
                          const int h);
 
        void matchColWidth(const int n1, const int n2);
 
        void setColWidth(const int n, const int w);
 
        void setRowHeight(const int n, const int h);
 
        void extend(const int x, const int y,
                    const int w, const int h);
 
        void computeSizes();
 
        void setType(int t)
        { mType = t; }
 
        int getWidth() const noexcept2 A_WARN_UNUSED
        { return mExtent[0]; }
 
        int getHeight() const noexcept2 A_WARN_UNUSED
        { return mExtent[1]; }
 
        void setWidth(const int w) noexcept2
        { mExtent[0] = w; }
 
        void setHeight(const int h) noexcept2
        { mExtent[1] = h; }
 
        enum
        {
            NONE = 0,
            WIDGET,
            ARRAY
        };
 
        static LayoutCell emptyCell;
 
    private:
        LayoutCell() :
            mWidget(nullptr),
            mHPadding(0),
            mVPadding(0),
            mType(NONE)
        {
            mExtent[0] = 0;
            mExtent[1] = 0;
            mAlign[0] = LEFT;
            mAlign[1] = LEFT;
            mNbFill[0] = 0;
            mNbFill[1] = 0;
            mSize[0] = 0;
            mSize[1] = 0;
        }
 
        // Copy not allowed, as the cell may own an array.
        explicit LayoutCell(LayoutCell const &);
        LayoutCell &operator=(LayoutCell const &);
 
        union
        {
            Widget *mWidget;
            LayoutArray *mArray;
        };
 
        LayoutArray &getArray();
 
        void reflow(int nx, int ny, int nw, int nh);
 
        int mSize[2];
        int mHPadding;
        int mVPadding;
        int mExtent[2];
        Alignment mAlign[2];
        int mNbFill[2];
        int mType;
};
 
#endif  // GUI_WIDGETS_LAYOUTCELL_H