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FL/Fl_Scalepack: Give scalepack the ability contain a resizable() child.

tags/non-daw-v1.1.0
Jonathan Moore Liles 12 years ago
parent
commit
ee705fffa3
2 changed files with 167 additions and 27 deletions
  1. +165
    -27
      FL/Fl_Scalepack.C
  2. +2
    -0
      FL/Fl_Scalepack.H

+ 165
- 27
FL/Fl_Scalepack.C View File

@@ -25,16 +25,20 @@
fit itself. Of course, this only works well with highly flexible
widgets, but the task comes up often enough to warrent this class.

If any child happens to be the resizable() widget, it is given half
of the available area, with the other widgets packed around it in
the remaining space.

If and child happens to be the resizable() widget, then it will be
resized so the all the other children can fit around it, with their
current sizes (and the size of the Fl_Scalepack) maintained.

NOTES: An Fl_Pack as a direct child will not work, because Fl_Pack
changes its size in draw(), which throws off our resize
calculation. The whole idea of widgets being able to resize
themselves within draw() is horribly broken...
*/

#include "Fl_Scalepack.H"

#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <stdio.h>

Fl_Scalepack::Fl_Scalepack ( int X, int Y, int W, int H, const char *L ) :
@@ -44,9 +48,23 @@ Fl_Scalepack::Fl_Scalepack ( int X, int Y, int W, int H, const char *L ) :
_spacing = 0;
}

void
Fl_Scalepack::resize ( int X, int Y, int W, int H )
{
/* Fl_Group's resize will change our child widget sizes, which
interferes with our own resizing method. */
Fl_Widget::resize( X, Y, W, H );
}

void
Fl_Scalepack::draw ( void )
{

if ( resizable() == this )
/* this resizable( this ) is the default for Fl_Group and is
* reset by Fl_Group::clear(), but it is not our default... */
resizable( 0 );

int tx = x() + Fl::box_dx( box() );
int ty = y() + Fl::box_dy( box() );
int tw = w() - Fl::box_dw( box() );
@@ -54,45 +72,165 @@ Fl_Scalepack::draw ( void )

if ( damage() & FL_DAMAGE_ALL )
{
draw_box();
if ( box() == FL_NO_BOX )
fl_rectf( x(), y(), w(), h(), FL_BACKGROUND_COLOR );
else
draw_box();

draw_label();
}

int v = 0;

int cth = 0;
int ctw = 0;

Fl_Widget * const * a = array();

for ( int i = children(); i--; )
if ( child( i )->visible() )
{
Fl_Widget *o = *a++;

if ( o->visible() )
{
++v;

if ( o != this->resizable() )
{
cth += o->h();
ctw += o->w();
}

cth += _spacing;
ctw += _spacing;
}
}

ctw -= _spacing;
cth -= _spacing;

if ( 0 == v )
return;

int sz, pos;

if ( type() == HORIZONTAL )
if ( this->resizable() )
{
sz = tw / v;
pos = tw - ( tw % sz );
int pos = 0;

Fl_Widget * const * a = array();

for ( int i = children(); i--; )
{
Fl_Widget *o = *a++;

if ( o->visible() )
{
int X, Y, W, H;

if ( type() == HORIZONTAL )
{
X = tx + pos;
Y = ty;
W = o->w();
H = th;
}
else
{
X = tx;
Y = ty + pos;
W = tw;
H = o->h();
}

if ( this->resizable() == o )
{
if ( type() == HORIZONTAL )
W = tw - ctw - 3;
else
H = th - cth;
}

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 ( damage() & FL_DAMAGE_ALL )
{
draw_child( *o );
draw_outside_label( *o );
}
else
update_child( *o );

/* if ( this->resizable() == o ) */
/* fl_rect( o->x(), o->y(), o->w(), o->h(), type() == VERTICAL ? FL_GREEN : FL_BLUE ); */

if ( type() == HORIZONTAL )
pos += o->w() + spacing();
else
pos += o->h() + spacing();

}
}
}
else
{
sz = th / v;
pos = th - ( th % sz );
}
int sz = 0;
int pos = 0;

for ( int i = children(); i--; )
if ( child( i )->visible() )
{
pos -= sz;
if ( type() == HORIZONTAL )
sz = (tw - (_spacing * (v - 1))) / v;
else
sz = (th - (_spacing * (v - 1))) / v;

if ( type() == HORIZONTAL )
child( i )->resize( tx + pos, ty, sz, th );
else
child( i )->resize( tx, ty + pos, tw, sz );
Fl_Widget * const * a = array();

if ( damage() & FL_DAMAGE_CHILD )
update_child( *child( i ) );
else
draw_child( *child( i ) );
for ( int i = children(); i--; )
{
Fl_Widget *o = *a++;

if ( o->visible() )
{
int X, Y, W, H;

if ( type() == HORIZONTAL )
{
X = tx + pos;
Y = ty;
W = sz;
H = th;
}
else
{
X = tx;
Y = ty + pos;
W = tw;
H = sz;
}

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 ( damage() & FL_DAMAGE_ALL )
{
draw_child( *o );
draw_outside_label( *o );
}
else
update_child( *o );

// fl_rect( o->x(), o->y(), o->w(), o->h(), type() == VERTICAL ? FL_RED : FL_YELLOW );

if ( type() == HORIZONTAL )
pos += o->w() + spacing();
else
pos += o->h() + spacing();

}
}
}
}

+ 2
- 0
FL/Fl_Scalepack.H View File

@@ -36,6 +36,8 @@ public:
int spacing ( void ) const { return _spacing; }
void spacing ( int v ) { _spacing = v; redraw(); }

virtual void resize ( int, int, int, int );

virtual void draw ( void );

};

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