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// Fl_Pack.C
// 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 current_position = horizontal() ? tx : ty;
int maximum_position = current_position;
uchar d = damage();
Fl_Widget*const* a = array();
for (int i = children(); i--;) {
Fl_Widget* o = *a++;
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();
}
if (spacing_ && current_position>maximum_position &&
(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) {
fl_color(color());
fl_rectf(maximum_position, ty, tx+tw-maximum_position, th);
}
tw = maximum_position-tx;
} else {
if (maximum_position < ty+th) {
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();
}
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