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Implement Fl_Flowpack. 

Which wraps its children and resizes itself vertically to contain them.
This commit is contained in:
Jonathan Moore Liles 2009-12-24 18:23:54 -06:00
parent 7e328df3c3
commit 9c0f0afb46
1 changed files with 117 additions and 0 deletions
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/*******************************************************************************/
/* Copyright (C) 2009 Jonathan Moore Liles */
/* */
/* 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 (at your */
/* option) 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; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#pragma once
#include <FL/Fl_Group.H>
class Fl_Flowpack : public Fl_Group
{
int _hspacing;
int _vspacing;
int _max_width;
public:
Fl_Flowpack ( int X, int Y, int W, int H, const char *L = 0 )
: Fl_Group( X, Y, W, H, L )
{
resizable( 0 );
_max_width = _hspacing = _vspacing = 0;
}
int max_width ( void ) const { return _max_width; }
void vspacing ( int v ) { _vspacing = v; }
int vspacing ( void ) const { return _vspacing; };
void hspacing ( int h ) { _hspacing = h; }
int hspacing ( void ) const { return _hspacing; };
void
add ( Fl_Widget *w )
{
Fl_Group::add( w );
dolayout();
}
void
remove ( Fl_Widget *w )
{
Fl_Group::remove( w );
dolayout();
}
void
resize ( int X, int Y, int W, int )
{
Fl_Group::resize( X, Y, W, layout( W ) );
}
void
draw ( void )
{
dolayout();
Fl_Group::draw();
}
void dolayout ( void )
{
size( w(), layout( w() ) );
}
int
layout ( int W )
{
resizable( 0 );
int X = 0;
int Y = 0;
int H = 0;
_max_width = 0;
for ( int i = 0; i < children(); ++i )
{
Fl_Widget *o = child( i );
if ( ! o->visible() )
continue;
H = o->h() > H ? o->h() : H;
if ( X + o->w() >= W )
{
Y += H + _vspacing;
H = o->h();
X = 0;
}
o->position( x() + X, y() + Y );
X += o->w() + _hspacing;
if ( X > _max_width )
_max_width = X;
}
return Y + H;
}
};