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//
// "$Id: Fl_Pack.cxx,v 1.6.2.4.2.6 2004/04/11 04:38:58 easysw Exp $"
//
// Packing widget for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2004 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".
//
// Based on code by Curtis Edwards
// Group that compresses all it's children together and resizes to surround
// them on each redraw (only if box() is zero)
// Bugs: ?
#include <FL/Fl.H>
#include <FL/Fl_Pack.H>
#include <FL/fl_draw.H>
Fl_Pack::Fl_Pack(int X, int Y, int W, int H,const char *l)
: Fl_Group(X, Y, W, H, l) {
resizable(0);
spacing_ = 0;
// type(VERTICAL); // already set like this
}
void Fl_Pack::draw() {
int tx = x()+Fl::box_dx(box());
int ty = y()+Fl::box_dy(box());
int tw = w()-Fl::box_dw(box());
int th = h()-Fl::box_dh(box());
int rw, rh;
int current_position = horizontal() ? tx : ty;
int maximum_position = current_position;
uchar d = damage();
Fl_Widget*const* a = array();
if (horizontal()) {
rw = -spacing_;
rh = th;
for (int i = children(); i--;)
if (child(i)->visible()) {
if (child(i) != this->resizable()) rw += child(i)->w();
rw += spacing_;
}
} else {
rw = tw;
rh = -spacing_;
for (int i = children(); i--;)
if (child(i)->visible()) {
if (child(i) != this->resizable()) rh += child(i)->h();
rh += spacing_;
}
}
for (int i = children(); i--;) {
Fl_Widget* o = *a++;
if (o->visible()) {
int X,Y,W,H;
if (horizontal()) {
X = current_position;
W = o->w();
Y = ty;
H = th;
} else {
X = tx;
W = tw;
Y = current_position;
H = o->h();
}
// Last child, if resizable, takes all remaining room
if(i == 0 && o == this->resizable()) {
if(horizontal())
W = tw - rw;
else
H = th - rh;
}
if (spacing_ && current_position>maximum_position && box() &&
(X != o->x() || Y != o->y() || d&FL_DAMAGE_ALL)) {
fl_color(color());
if (horizontal())
fl_rectf(maximum_position, ty, spacing_, th);
else
fl_rectf(tx, maximum_position, tw, spacing_);
}
if (X != o->x() || Y != o->y() || W != o->w() || H != o->h()) {
o->resize(X,Y,W,H);
o->clear_damage(FL_DAMAGE_ALL);
}
if (d&FL_DAMAGE_ALL) draw_child(*o); else update_child(*o);
// child's draw() can change it's size, so use new size:
current_position += (horizontal() ? o->w() : o->h());
if (current_position > maximum_position)
maximum_position = current_position;
current_position += spacing_;
}
}
if (horizontal()) {
if (maximum_position < tx+tw && box()) {
fl_color(color());
fl_rectf(maximum_position, ty, tx+tw-maximum_position, th);
}
tw = maximum_position-tx;
} else {
if (maximum_position < ty+th && box()) {
fl_color(color());
fl_rectf(tx, maximum_position, tw, ty+th-maximum_position);
}
th = maximum_position-ty;
}
tw += Fl::box_dw(box()); if (tw <= 0) tw = 1;
th += Fl::box_dh(box()); if (th <= 0) th = 1;
if (tw != w() || th != h()) {Fl_Widget::resize(x(),y(),tw,th); d = FL_DAMAGE_ALL;}
if (d&FL_DAMAGE_ALL) draw_box();
}
//
// End of "$Id: Fl_Pack.cxx,v 1.6.2.4.2.6 2004/04/11 04:38:58 easysw Exp $".
//
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