File Coverage

blib/lib/Tickit/Widget/Frame.pm

Criterion	Covered	Total	%
statement	9	9	100.0
branch			n/a
condition			n/a
subroutine	3	3	100.0
pod			n/a
total	12	12	100.0

#  You may distribute under the terms of either the GNU General Public License
#  or the Artistic License (the same terms as Perl itself)
#
#  (C) Paul Evans, 2011-2014 -- [e-mail]

package Tickit::Widget::Frame;

use strict;
use warnings;
use base qw( Tickit::SingleChildWidget );
use Tickit::Style;

use Tickit::WidgetRole::Alignable name => "title_align";

our $VERSION = '0.31';

use Carp;

use Tickit::Pen;
use Tickit::Utils qw( textwidth substrwidth );
use Tickit::RenderBuffer qw( LINE_SINGLE LINE_DOUBLE LINE_THICK CAP_START CAP_END );

=head1 NAME

C - draw a frame around another widget

=head1 SYNOPSIS

 use Tickit;
 use Tickit::Widget::Frame;
 use Tickit::Widget::Static;

 my $hello = Tickit::Widget::Static->new(
    text   => "Hello, world",
    align  => "centre",
    valign => "middle",
 );

 my $frame = Tickit::Widget::Frame->new(
    child => $hello,
    style => { linetype => "single" },
 );

 Tickit->new( root => $frame )->run;

=head1 DESCRIPTION

This container widget draws a frame around a single child widget.

=head1 STYLE

The default style pen is used as the widget pen. The following style pen
prefixes are also used:

=over 4

=item frame => PEN

The pen used to render the frame lines

=back

The following style keys are used:

=over 4

=item linetype => STRING

Controls the type of line characters used to draw the frame. Must be one of
the following names:

 ascii single double thick solid_inside solid_outside

The C linetype is default, and uses only the C<-|+> ASCII characters.
Other linetypes use Unicode box-drawing characters. These may not be supported
by all terminals or fonts.

=item linetype_top => STRING

=item linetype_bottom => STRING

=item linetype_left => STRING

=item linetype_right => STRING

Overrides the C attribute for each side of the frame specifically.
If two line-drawing styles meet at corners they should be drawn correctly if
C can combine the line segments, but in other
circumstances the corners are drawn as extensions of the top or bottom line,
and the left and right lines do not meet it.

Any edge's linetype may be set to C to cause that edge not to have a
line at all; no extra space will be consumed on that side.

=back

=cut

style_definition base =>
   linetype => "ascii";

style_redraw_keys qw( linetype linetype_top linetype_bottom linetype_left linetype_right );

use constant WIDGET_PEN_FROM_STYLE => 1;

=head1 CONSTRUCTOR

=cut

=head2 $frame = Tickit::Widget::Frame->new( %args )

Constructs a new C object.

Takes the following named arguments in addition to those taken by the base
L constructor:

=over 8

=item title => STRING

Optional.

=item title_align => FLOAT|STRING

Optional. Defaults to C<0.0> if unspecified.

=back

For more details see the accessors below.

=cut

sub new
{
   my $class = shift;
   my %args = @_;

   # Previously 'linetype' was called 'style', but it collided with
   # Tickit::Widget's idea of style
   if( defined $args{style} and !ref $args{style} ) {
      $args{style} = { linetype => delete $args{style} };
   }

   my $self = $class->SUPER::new( %args );

   $self->set_title( $args{title} ) if defined $args{title};
   $self->set_title_align( $args{title_align} || 0 );

   # Prepopulate has_* caches
   $self->on_style_changed_values;

   return $self;
}

=head1 ACCESSORS

=cut

sub on_style_changed_values
{
   my $self = shift;
   my %values = @_;

   my $reshape = 0;

   my $linetype = $values{linetype}[1] // $self->get_style_values( "linetype" );

   # Cache these
   foreach (qw( top bottom left right )) {
      no warnings 'uninitialized'; # treat undef as false

      my $new = ( $values{"linetype_$_"}[1] // $self->get_style_values( "linetype_$_") // $linetype )
         ne "none";

      $reshape = 1 if $self->{"has_$_"} != $new;
      $self->{"has_$_"} = $new;
   }

   $self->reshape if $reshape;
}

sub lines
{
   my $self = shift;
   my $child = $self->child;
   return ( $child ? $child->requested_lines : 0 ) + $self->{has_top} + $self->{has_bottom};
}

sub cols
{
   my $self = shift;
   my $child = $self->child;
   return ( $child ? $child->requested_cols : 0 ) + $self->{has_left} + $self->{has_right};
}

use constant {
   TOP       => 0,
   BOTTOM    => 1,
   LEFT      => 2,
   RIGHT     => 3,
   CORNER_TL => 4,
   CORNER_TR => 5,
   CORNER_BL => 6,
   CORNER_BR => 7,
};

# Character numbers from
#   http://en.wikipedia.org/wiki/Box-drawing_characters

my %LINECHARS = ( #            TOP     BOTTOM  LEFT    RIGHT   TL      TR      BL      BR
   ascii         => [          '-',    '-',    '|',    '|',    '+',    '+',    '+',    '+' ],
   solid_inside  => [ map chr, 0x2584, 0x2580, 0x2590, 0x258C, 0x2597, 0x2596, 0x259D, 0x2598 ],
   solid_outside => [ map chr, 0x2580, 0x2584, 0x258C, 0x2590, 0x259B, 0x259C, 0x2599, 0x259F ],
);
my %LINESTYLES = (
   single => LINE_SINGLE,
   double => LINE_DOUBLE,
   thick  => LINE_THICK,
);

=head2 $title = $frame->title

=cut

sub title
{
   my $self = shift;
   return $self->{title};
}

=head2 $frame->set_title( $title )

Accessor for the C property, a string written in the top of the </td>
</tr>

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<td class="s"> frame. </td>
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<td class="s"> =cut </td>
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<td class="s"> sub set_title </td>
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<td class="s"> { </td>
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<td class="s">    my $self = shift; </td>
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<td class="s">    $self->{title} = $_[0]; </td>
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<td class="s">    $self->redraw; </td>
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<td class="s"> =head2 $title_align = $frame->title_align </td>
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<td class="s"> =head2 $frame->set_title_align( $title_align ) </td>
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<td class="s"> Accessor for the C<title_align> property. Gives a vlaue in the range C<0.0> to </td>
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<td class="s"> C<1.0> to align the title in the top of the frame. </td>
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<td class="s"> See also L<Tickit::WidgetRole::Alignable>. </td>
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<td class="s"> =cut </td>
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<td class="s"> ## This should come from Tickit::ContainerWidget </td>
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<td class="s"> sub children_changed { shift->reshape } </td>
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<td class="s"> sub reshape </td>
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<td class="s"> { </td>
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<td class="s">    my $self = shift; </td>
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<td class="s">    my $window = $self->window or return; </td>
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<td class="s">    my $child  = $self->child  or return; </td>
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</td>

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<td class="s">   </td>
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<td class="s">    my $lines = $window->lines; </td>
</tr>

<tr>
<td  class="h" >
<a name="267">267</a>
</td>

<td >

 

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<td class="s">    my $cols  = $window->cols; </td>
</tr>

<tr>
<td  class="h" >
<a name="268">268</a>
</td>

<td >

 

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<td class="s">   </td>
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<a name="269">269</a>
</td>

<td >

 

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<td >

 

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<td class="s">    my $extra_lines = $self->{has_top} + $self->{has_bottom}; </td>
</tr>

<tr>
<td  class="h" >
<a name="270">270</a>
</td>

<td >

 

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</td>

<td >

 

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<td >

 

</td>

<td class="s">    my $extra_cols  = $self->{has_left} + $self->{has_right}; </td>
</tr>

<tr>
<td  class="h" >
<a name="271">271</a>
</td>

<td >

 

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</td>

<td >

 

</td>

<td class="s">    if( $lines > $extra_lines and $cols > $extra_cols ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="272">272</a>
</td>

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<td class="s">       my @geom = ( $self->{has_top}, $self->{has_left}, $lines - $extra_lines, $cols - $extra_cols ); </td>
</tr>

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</td>

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<td class="s">   </td>
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<td >

 

</td>

<td class="s">       if( my $childwin = $child->window ) { </td>
</tr>

<tr>
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<a name="275">275</a>
</td>

<td >

 

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<td class="s">          $childwin->change_geometry( @geom ); </td>
</tr>

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</td>

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<td class="s">       } </td>
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<td class="s">       else { </td>
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<td class="s">          my $childwin = $window->make_sub( @geom ); </td>
</tr>

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</td>

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<td class="s">          $child->set_window( $childwin ); </td>
</tr>

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</td>

<td >

 

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<td class="s">       } </td>
</tr>

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</td>

<td >

 

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<td class="s">    } </td>
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</td>

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</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    else { </td>
</tr>

<tr>
<td  class="h" >
<a name="283">283</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       if( $child->window ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="284">284</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $child->set_window( undef ); </td>
</tr>

<tr>
<td  class="h" >
<a name="285">285</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="286">286</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    } </td>
</tr>

<tr>
<td  class="h" >
<a name="287">287</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> } </td>
</tr>

<tr>
<td  class="h" >
<a name="288">288</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="289">289</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> sub render_to_rb </td>
</tr>

<tr>
<td  class="h" >
<a name="290">290</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> { </td>
</tr>

<tr>
<td  class="h" >
<a name="291">291</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $self = shift; </td>
</tr>

<tr>
<td  class="h" >
<a name="292">292</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my ( $rb, $rect ) = @_; </td>
</tr>

<tr>
<td  class="h" >
<a name="293">293</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="294">294</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    $rb->setpen( $self->get_style_pen( "frame" ) ); </td>
</tr>

<tr>
<td  class="h" >
<a name="295">295</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="296">296</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $cols  = $self->window->cols; </td>
</tr>

<tr>
<td  class="h" >
<a name="297">297</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $lines = $self->window->lines; </td>
</tr>

<tr>
<td  class="h" >
<a name="298">298</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="299">299</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $right  = $cols - 1; </td>
</tr>

<tr>
<td  class="h" >
<a name="300">300</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $bottom = $lines - 1; </td>
</tr>

<tr>
<td  class="h" >
<a name="301">301</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="302">302</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $linetype = $self->get_style_values( "linetype" ); </td>
</tr>

<tr>
<td  class="h" >
<a name="303">303</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="304">304</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $linetype_top    = $self->get_style_values( "linetype_top"    ) // $linetype; </td>
</tr>

<tr>
<td  class="h" >
<a name="305">305</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $linetype_bottom = $self->get_style_values( "linetype_bottom" ) // $linetype; </td>
</tr>

<tr>
<td  class="h" >
<a name="306">306</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $linetype_left   = $self->get_style_values( "linetype_left"   ) // $linetype; </td>
</tr>

<tr>
<td  class="h" >
<a name="307">307</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $linetype_right  = $self->get_style_values( "linetype_right"  ) // $linetype; </td>
</tr>

<tr>
<td  class="h" >
<a name="308">308</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="309">309</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $top_is_line    = defined $LINESTYLES{$linetype_top}; </td>
</tr>

<tr>
<td  class="h" >
<a name="310">310</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $bottom_is_line = defined $LINESTYLES{$linetype_bottom}; </td>
</tr>

<tr>
<td  class="h" >
<a name="311">311</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $left_is_line   = defined $LINESTYLES{$linetype_left}; </td>
</tr>

<tr>
<td  class="h" >
<a name="312">312</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $right_is_line  = defined $LINESTYLES{$linetype_right}; </td>
</tr>

<tr>
<td  class="h" >
<a name="313">313</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="314">314</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $h_caps = ( $left_is_line ? 0 : CAP_START ) | ( $right_is_line  ? 0 : CAP_END ); </td>
</tr>

<tr>
<td  class="h" >
<a name="315">315</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $v_caps = ( $top_is_line  ? 0 : CAP_START ) | ( $bottom_is_line ? 0 : CAP_END ); </td>
</tr>

<tr>
<td  class="h" >
<a name="316">316</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $v_start = $top_is_line ? 0 : $self->{has_top}; </td>
</tr>

<tr>
<td  class="h" >
<a name="317">317</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $v_end   = $bottom_is_line ? $bottom : $bottom - $self->{has_bottom}; </td>
</tr>

<tr>
<td  class="h" >
<a name="318">318</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="319">319</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $linechars; </td>
</tr>

<tr>
<td  class="h" >
<a name="320">320</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    my $style; </td>
</tr>

<tr>
<td  class="h" >
<a name="321">321</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="322">322</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    # Top </td>
</tr>

<tr>
<td  class="h" >
<a name="323">323</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    if( $rect->top == 0 ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="324">324</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       if( $linechars = $LINECHARS{$linetype_top} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="325">325</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->goto( 0, 0 ); </td>
</tr>

<tr>
<td  class="h" >
<a name="326">326</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="327">327</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $linechars->[$linetype_top eq $linetype_left  ? CORNER_TL : TOP] ); </td>
</tr>

<tr>
<td  class="h" >
<a name="328">328</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $linechars->[TOP] x ($cols - 2) ) if $cols > 2; </td>
</tr>

<tr>
<td  class="h" >
<a name="329">329</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $linechars->[$linetype_top eq $linetype_right ? CORNER_TR : TOP] ) if $cols > 1; </td>
</tr>

<tr>
<td  class="h" >
<a name="330">330</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="331">331</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       elsif( $style = $LINESTYLES{$linetype_top} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="332">332</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->hline_at( 0, 0, $right, $style, undef, $h_caps ); </td>
</tr>

<tr>
<td  class="h" >
<a name="333">333</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="334">334</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="335">335</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       if( defined( my $title = $self->title ) ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="336">336</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          my $cols = $self->window->cols; </td>
</tr>

<tr>
<td  class="h" >
<a name="337">337</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="338">338</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          # At most we can fit $cols-4 columns of title </td>
</tr>

<tr>
<td  class="h" >
<a name="339">339</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          my ( $left, $titlewidth, $right ) = $self->_title_align_allocation( textwidth( $title ), $cols - 4 ); </td>
</tr>

<tr>
<td  class="h" >
<a name="340">340</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="341">341</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->goto( 0, 1 + $left ); </td>
</tr>

<tr>
<td  class="h" >
<a name="342">342</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="343">343</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( " " ); </td>
</tr>

<tr>
<td  class="h" >
<a name="344">344</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $title ); </td>
</tr>

<tr>
<td  class="h" >
<a name="345">345</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( " " ); </td>
</tr>

<tr>
<td  class="h" >
<a name="346">346</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="347">347</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    } </td>
</tr>

<tr>
<td  class="h" >
<a name="348">348</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="349">349</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    # Left </td>
</tr>

<tr>
<td  class="h" >
<a name="350">350</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    if( $rect->left == 0 ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="351">351</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       if( $linechars = $LINECHARS{$linetype_left} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="352">352</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text_at( $_, 0, $linechars->[LEFT] ) for 1 .. $bottom-1; </td>
</tr>

<tr>
<td  class="h" >
<a name="353">353</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="354">354</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       elsif( $style = $LINESTYLES{$linetype_left} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="355">355</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->vline_at( $v_start, $v_end, 0, $style, undef, $v_caps ); </td>
</tr>

<tr>
<td  class="h" >
<a name="356">356</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="357">357</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    } </td>
</tr>

<tr>
<td  class="h" >
<a name="358">358</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    # Right </td>
</tr>

<tr>
<td  class="h" >
<a name="359">359</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    if( $rect->right == $cols and $cols > 1 ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="360">360</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       if( $linechars = $LINECHARS{$linetype_right} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="361">361</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text_at( $_, $right, $linechars->[RIGHT] ) for 1 .. $bottom-1; </td>
</tr>

<tr>
<td  class="h" >
<a name="362">362</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="363">363</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       elsif( $style = $LINESTYLES{$linetype_right} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="364">364</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->vline_at( $v_start, $v_end, $right, $style, undef, $v_caps ); </td>
</tr>

<tr>
<td  class="h" >
<a name="365">365</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="366">366</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    } </td>
</tr>

<tr>
<td  class="h" >
<a name="367">367</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="368">368</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    # Bottom </td>
</tr>

<tr>
<td  class="h" >
<a name="369">369</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    if( $rect->bottom == $lines and $lines > 1 ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="370">370</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       if( $linechars = $LINECHARS{$linetype_bottom} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="371">371</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->goto( $bottom, 0 ); </td>
</tr>

<tr>
<td  class="h" >
<a name="372">372</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="373">373</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $linechars->[$linetype_bottom eq $linetype_left  ? CORNER_BL : BOTTOM] ); </td>
</tr>

<tr>
<td  class="h" >
<a name="374">374</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $linechars->[BOTTOM] x ($cols - 2) ) if $cols > 2; </td>
</tr>

<tr>
<td  class="h" >
<a name="375">375</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->text( $linechars->[$linetype_bottom eq $linetype_right ? CORNER_BR : BOTTOM] ) if $cols > 1; </td>
</tr>

<tr>
<td  class="h" >
<a name="376">376</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="377">377</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       elsif( $style = $LINESTYLES{$linetype_bottom} ) { </td>
</tr>

<tr>
<td  class="h" >
<a name="378">378</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">          $rb->hline_at( $bottom, 0, $right, $style, undef, $h_caps ); </td>
</tr>

<tr>
<td  class="h" >
<a name="379">379</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">       } </td>
</tr>

<tr>
<td  class="h" >
<a name="380">380</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">    } </td>
</tr>

<tr>
<td  class="h" >
<a name="381">381</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> } </td>
</tr>

<tr>
<td  class="h" >
<a name="382">382</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="383">383</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =head1 TODO </td>
</tr>

<tr>
<td  class="h" >
<a name="384">384</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="385">385</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =over 4 </td>
</tr>

<tr>
<td  class="h" >
<a name="386">386</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="387">387</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =item * </td>
</tr>

<tr>
<td  class="h" >
<a name="388">388</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="389">389</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> Specific pen for title. Layered on top of frame pen. </td>
</tr>

<tr>
<td  class="h" >
<a name="390">390</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="391">391</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =item * </td>
</tr>

<tr>
<td  class="h" >
<a name="392">392</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="393">393</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> Caption at the bottom of the frame as well. Identical to title. </td>
</tr>

<tr>
<td  class="h" >
<a name="394">394</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="395">395</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =item * </td>
</tr>

<tr>
<td  class="h" >
<a name="396">396</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="397">397</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> Consider if it's useful to provide accessors to apply extra padding inside the </td>
</tr>

<tr>
<td  class="h" >
<a name="398">398</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> frame, surrounding the child window. </td>
</tr>

<tr>
<td  class="h" >
<a name="399">399</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="400">400</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =back </td>
</tr>

<tr>
<td  class="h" >
<a name="401">401</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="402">402</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =head1 AUTHOR </td>
</tr>

<tr>
<td  class="h" >
<a name="403">403</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="404">404</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> Paul Evans <[e-mail]> </td>
</tr>

<tr>
<td  class="h" >
<a name="405">405</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s">   </td>
</tr>

<tr>
<td  class="h" >
<a name="406">406</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

<td class="s"> =cut </td>
</tr>

<tr>
<td  class="h" >
<a name="407">407</a>
</td>

<td >

 

</td>

<td >

 

</td>

<td >

 

</td>

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