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4e0450ea36
fltk/fluid/align_widget.cxx
Michael R Sweet 4e0450ea36 FLUID crashed if you did layout with a window widget (STR #317) 
Fl_Scroll::clear() didn't remove the child widget from the
Fl_Scroll widget (STR #327)


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@3297 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2004-04-06 02:47:26 +00:00

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//
// "$Id: align_widget.cxx,v 1.1.2.4 2004/04/06 02:47:25 easysw Exp $"
//
// alignment code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2003 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include "Fl_Widget_Type.h"
/**
* the first behaviour always uses the first selected widget as a reference
* the second behaviour uses the larges widget (most extreme positions) as a reference
*/
#define BREAK_ON_FIRST break
//#define BREAK_ON_FIRST
void align_widget_cb(Fl_Widget*, long how)
{
const int max = 32768, min = -32768;
int left, right, top, bot, wdt, hgt, n;
Fl_Type *o;
switch ( how )
{
//---- align
case 10: // align left
left = max;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->x()<left)
left = w->x();
BREAK_ON_FIRST;
}
if (left!=max)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize(left, w->y(), w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
case 11: // align h.center
left = max; right = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->x()<left)
left = w->x();
if (w->x()+w->w()>right)
right = w->x()+w->w();
BREAK_ON_FIRST;
}
if (left!=max)
{
int center2 = left+right;
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize((center2-w->w())/2, w->y(), w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
}
break;
case 12: // align right
right = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->x()+w->w()>right)
right = w->x()+w->w();
BREAK_ON_FIRST;
}
if (right!=min)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize(right-w->w(), w->y(), w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
case 13: // align top
top = max;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->y()<top)
top = w->y();
BREAK_ON_FIRST;
}
if (top!=max)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize(w->x(), top, w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
case 14: // align v.center
top = max; bot = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->y()<top)
top = w->y();
if (w->y()+w->h()>bot)
bot = w->y()+w->h();
BREAK_ON_FIRST;
}
if (top!=max)
{
int center2 = top+bot;
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize(w->x(), (center2-w->h())/2, w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
}
break;
case 15: // align bottom
bot = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->y()+w->h()>bot)
bot = w->y()+w->h();
BREAK_ON_FIRST;
}
if (bot!=min)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize( w->x(), bot-w->h(), w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
//---- space evently
case 20: // space evenly across
left = max; right = min; wdt = 0, n = 0;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->x()<left)
left = w->x();
if (w->x()+w->w()>right)
right = w->x()+w->w();
wdt += w->w();
n++;
}
wdt = (right-left)-wdt;
n--;
if (n>0)
{
int cnt = 0, wsum = 0;
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize(left+wsum+wdt*cnt/n, w->y(), w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
cnt++;
wsum += w->w();
}
}
break;
case 21: // space evenly down
top = max; bot = min; hgt = 0, n = 0;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->y()<top)
top = w->y();
if (w->y()+w->h()>bot)
bot = w->y()+w->h();
hgt += w->h();
n++;
}
hgt = (bot-top)-hgt;
n--;
if (n>0)
{
int cnt = 0, hsum = 0;
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize(w->x(), top+hsum+hgt*cnt/n, w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
cnt++;
hsum += w->h();
}
}
break;
//---- make same size
case 30: // same width
wdt = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->w()>wdt)
wdt = w->w();
BREAK_ON_FIRST;
}
if (wdt!=min)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize( w->x(), w->y(), wdt, w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
case 31: // same height
hgt = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->h()>hgt)
hgt = w->h();
BREAK_ON_FIRST;
}
if (hgt!=min)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize( w->x(), w->y(), w->w(), hgt);
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
case 32: // same size
hgt = min; wdt = min;
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
if (w->w()>wdt)
wdt = w->w();
if (w->h()>hgt)
hgt = w->h();
BREAK_ON_FIRST;
}
if (hgt!=min)
for (Fl_Type *o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget())
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
w->resize( w->x(), w->y(), wdt, hgt);
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
//---- center in group
case 40: // center hor
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget() && o->parent)
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
Fl_Widget *p = ((Fl_Widget_Type *)o->parent)->o;
int center2 = 2*p->x()+p->w();
w->resize((center2-w->w())/2, w->y(), w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
case 41: // center vert
for (o = Fl_Type::first; o; o = o->next)
if (o->selected && o->is_widget() && o->parent)
{
Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
Fl_Widget *p = ((Fl_Widget_Type *)o->parent)->o;
int center2 = 2*p->y()+p->h();
w->resize(w->x(), (center2-w->h())/2, w->w(), w->h());
w->redraw();
if (w->window()) w->window()->redraw();
}
break;
}
}
//
// End of "$Id: align_widget.cxx,v 1.1.2.4 2004/04/06 02:47:25 easysw Exp $".
//
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