Fl_Tabs.H

//
// Tab header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2017 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
//     https://www.fltk.org/bugs.php
//

/* \file
   Fl_Tabs widget . */

#ifndef Fl_Tabs_H
#define Fl_Tabs_H

#include "Fl_Group.H"

class FL_EXPORT Fl_Tabs : public Fl_Group {

  Fl_Widget *push_;

protected:

  int *tab_pos;         // array of x-offsets of tabs per child + 1
  int *tab_width;       // array of widths of tabs per child + 1
  int tab_count;        // array size
  Fl_Align tab_align_;  // tab label alignment

  virtual void redraw_tabs();
  virtual int tab_positions();  // allocate and calculate tab positions
  virtual void clear_tab_positions();
  virtual void draw_tab(int x1, int x2, int W, int H, Fl_Widget* o, int sel=0);
  virtual int tab_height();

  void draw();

public:

  Fl_Tabs(int X, int Y, int W, int H, const char *L = 0);
  virtual ~Fl_Tabs();

  int handle(int);
  Fl_Widget *value();
  int value(Fl_Widget *);
  Fl_Widget *push() const {return push_;}
  int push(Fl_Widget *);

  // Returns the widget of the tab the user clicked on at event_x/event_y.
  virtual Fl_Widget *which(int event_x, int event_y);

  // Returns the position and size available to be used by its children.
  void client_area(int &rx, int &ry, int &rw, int &rh, int tabh=0);

  void tab_align(Fl_Align a) {tab_align_ = a;}
  Fl_Align tab_align() const {return tab_align_;}
};

#endif