/**
*  Copyright Mikael Högdahl - triyana@users.sourceforge.net
*
*  This source is distributed under the terms of the Q Public License version 1.0,
*  created by Trolltech (www.trolltech.com).
*/

#ifndef Fl_Layout_h
#define Fl_Layout_h

#include <FL/Fl_Group.h>




/**
*  A border layout widget or a split widget for two child widgets or
*  a vertical/horizontal group widget..
*/
class Fl_Layout : public Fl_Group {
public:
    enum {
                            NORTH = 0,
                            SOUTH,
                            EAST,
                            WEST,
                            CENTER,
    };

    virtual void            add (int position, Fl_Widget* widget);
    int                     handle (int event);
    void                    off (bool o) {aOff = o;}
    void                    resize (int x, int y, int w, int h);

protected:
    enum {
                            BORDER = 1,
                            HORIZONTAL,
                            HORIZONTAL_SPLIT,
                            VERTICAL,
                            VERTICAL_SPLIT
    };

                            Fl_Layout (int layout, int x, int y, int w, int h);

    bool                    aOff;
    int                     aLayout;
    int                     aSize;
    int                     aDrag;
    int                     aSpace[6];
    Fl_Widget*              aWidget1;
    Fl_Widget*              aWidget2;
    Fl_Widget*              aWidgets[5];

    void                    resizeBorder (int x, int y, int w, int h);
    void                    resizeHorizontal (int x, int y, int w, int h);
    void                    resizeHorizontalSplit (int x, int y, int w, int h);
    void                    resizeVertical (int x, int y, int w, int h);
    void                    resizeVerticalSplit (int x, int y, int w, int h);
    virtual void            space (int north, int south, int west, int east) {aSpace[1] = north; aSpace[2] = south; aSpace[3] = west; aSpace[4] = east; aSpace[5] = 0;}
};



class Fl_BorderLayout : public Fl_Layout {
public:
                            Fl_BorderLayout (int x, int y, int w, int h) : Fl_Layout (Fl_Layout::BORDER, x, y, w, h) {;}
    void                    space (int north, int south, int west, int east) {aSpace[1] = north; aSpace[2] = south; aSpace[3] = west; aSpace[4] = east; aSpace[5] = 0;}
};



class Fl_HorizontalLayout : public Fl_Layout {
public:
                            Fl_HorizontalLayout (int x, int y, int w, int h) : Fl_Layout (Fl_Layout::HORIZONTAL, x, y, w, h) {;}
    void                    add (Fl_Widget* w) {Fl_Group::add (w);}
    void                    space (int v, int s) {aSpace[0] = v; aSpace[1] = s;}

protected:
    void                    space (int north, int south, int west, int east) {;}
};



class Fl_HorizontalSplitLayout : public Fl_Layout {
public:
                            Fl_HorizontalSplitLayout (int x, int y, int w, int h) : Fl_Layout (Fl_Layout::HORIZONTAL_SPLIT, x, y, w, h) {;}
    void                    addLeft (Fl_Widget* w) {Fl_Layout::add (WEST, w);}
    void                    addRight (Fl_Widget* w) {Fl_Layout::add (EAST, w);}
    void                    size (int s) {aSize = s;}
    void                    space (int s) {aSpace[0] = s;}

protected:
    void                    space (int north, int south, int west, int east) {;}
    void                    add (Fl_Widget* w) {;}
};



class Fl_VerticalLayout : public Fl_Layout {
public:
                            Fl_VerticalLayout (int x, int y, int w, int h) : Fl_Layout (Fl_Layout::VERTICAL, x, y, w, h) {;}
    void                    add (Fl_Widget* w) {Fl_Group::add (w);}
    void                    space (int v, int s) {aSpace[0] = v; aSpace[1] = s;}

protected:
    void                    space (int north, int south, int west, int east) {;}
};



class Fl_VerticalSplitLayout : public Fl_Layout {
public:
                            Fl_VerticalSplitLayout (int x, int y, int w, int h) : Fl_Layout (Fl_Layout::VERTICAL_SPLIT, x, y, w, h) {;}
    void                    addBottom (Fl_Widget* w) {Fl_Layout::add (SOUTH, w);}
    void                    addTop (Fl_Widget* w) {Fl_Layout::add (NORTH, w);}
    void                    size (int s) {aSize = s;}
    void                    space (int s) {aSpace[0] = s;}

protected:
    void                    space (int north, int south, int west, int east) {;}
    void                    add (Fl_Widget* w) {;}
};

#endif