153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
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/*******************************************************************************/
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/* Copyright (C) 2009 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#pragma once
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#include <FL/Fl_Group.H>
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class Fl_Flowpack : public Fl_Group
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{
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int _hspacing;
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int _vspacing;
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int _max_width;
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bool _flow;
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public:
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Fl_Flowpack ( int X, int Y, int W, int H, const char *L = 0 )
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: Fl_Group( X, Y, W, H, L )
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{
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resizable( 0 );
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_max_width = _hspacing = _vspacing = 0;
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_flow = true;
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}
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virtual ~Fl_Flowpack ( )
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{
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}
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int max_width ( void ) const { return _max_width; }
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void vspacing ( int v ) { _vspacing = v; }
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int vspacing ( void ) const { return _vspacing; };
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void hspacing ( int h ) { _hspacing = h; }
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int hspacing ( void ) const { return _hspacing; };
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bool flow ( void ) const { return _flow; }
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void flow ( bool v ) { _flow = v; }
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void
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add ( Fl_Widget *w )
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{
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Fl_Group::add( w );
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dolayout();
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}
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void
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remove ( Fl_Widget *w )
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{
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Fl_Group::remove( w );
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dolayout();
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}
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void
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resize ( int X, int Y, int W, int )
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{
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Fl_Group::resize( X, Y, W, layout( W ) );
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}
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void
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draw ( void )
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{
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dolayout();
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Fl_Group::draw();
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}
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void dolayout ( void )
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{
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int new_h = layout( w() );
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if ( new_h != h() )
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size( w(), new_h );
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}
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int
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layout ( int W )
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{
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resizable( 0 );
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int X = 0;
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int Y = 0;
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int H = 0;
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_max_width = 0;
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int LW = 0;
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int LH = 0;
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for ( int i = 0; i < children(); ++i )
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{
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Fl_Widget *o = child( i );
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if ( ! o->visible() )
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continue;
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H = o->h() > H ? o->h() : H;
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if ( _flow )
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{
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if ( Y + o->h() < H )
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{
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/* if it'll fit in this column, put it below the previous widget */
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X -= LW + _hspacing;
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}
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else if ( X + o->w() >= W )
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{
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/* maybe wrap to the next row */
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H += o->h();
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X = 0;
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}
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else
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{
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/* otherwise, put it in the next column */
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Y = 0;
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}
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LW = o->w();
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LH = o->h();
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}
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/* avoid bothering the control with lots of resize() calls */
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if ( ! ( o->x() == x() + X &&
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o->y() == y() + Y ) )
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o->position( x() + X, y() + Y );
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Y += LH + _vspacing;
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X += LW + _hspacing;
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if ( X > _max_width )
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_max_width = X;
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}
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return Y + H;
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}
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};
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