#!/usr/bin/perl
#================================================
# Author : Djibril Ousmanou
# Aim    : Allow you to configure as you want your widget to test
#          all options of Tk::Canvas::GradientColor.
#================================================
use strict;
use warnings;

use Tk;
use Tk::Canvas::GradientColor;
use Tk::BrowseEntry;

my $mw = MainWindow->new(
  -title      => 'gradient color with canvas',
  -background => 'snow',
);

my $canvas = $mw->GradientColor(
  -background => '#005500',
  -width      => 500,
  -height     => 500,
)->pack(qw/ -fill both -expand 1 /);

my %arg_gradient = (
  -type         => undef,
  -start_color  => '#A780C1',
  -end_color    => 'white',
  -start        => undef,
  -end          => undef,
  -number_color => undef,
);

# configure start color
my $bouton_color1 = $canvas->Button(
  -text    => 'select color start',
  -command => sub {
    $arg_gradient{-start_color} = $canvas->chooseColor( -title => 'select color start' );
    $canvas->set_gradientcolor(%arg_gradient);
  },
);

# configure end color
my $bouton_color2 = $canvas->Button(
  -text    => 'select color end',
  -command => sub {
    $arg_gradient{-end_color} = $canvas->chooseColor( -title => 'select color end' );
    $canvas->set_gradientcolor(%arg_gradient);
  },
);

my $type = $canvas->BrowseEntry(
  -label   => 'Type gradient color',
  -choices => [
    qw/ linear_horizontal linear_vertical mirror_horizontal mirror_vertical radial losange corner_right corner_left/
  ],
    -background => 'white',
  -state              => 'readonly',
  -disabledbackground => 'yellow',
  -browsecmd          => sub {
    my ( $widget, $selection ) = @_;
    $arg_gradient{-type} = $selection;
    $canvas->set_gradientcolor(%arg_gradient);
  },
);

my $start_num = $canvas->Scale(
  -background   => 'white',
  -label        => 'Start',
  -from         => 0,
  -to           => 100,
  -variable     => 0,
  -orient       => 'horizontal',
  -sliderlength => 10,
  -command      => sub {
    my $selection = shift;
    $arg_gradient{-start} = $selection;
    $canvas->set_gradientcolor(%arg_gradient);
  },
);

my $end_num = $canvas->Scale(
  -background   => 'white',
  -label        => 'End',
  -from         => 0,
  -to           => 100,
  -variable     => '100',
  -orient       => 'horizontal',
  -sliderlength => 10,
  -command      => sub {
    my $selection = shift;
    $arg_gradient{-end} = $selection;
    $canvas->set_gradientcolor(%arg_gradient);
  },
);
my $num                = 100;
my $entry_number_color = $canvas->BrowseEntry(
  -label              => 'Number color',
  -choices            => [qw/ 2 3 4 5 10 50 100 150 200 250 300 400 500 750 1000 1500 2000 2500/],
  -state              => 'readonly',
  -disabledbackground => 'yellow',
  -background => 'white',
  -variable           => \$num,
  -browsecmd          => sub {
    my ( $widget, $selection ) = @_;
    $arg_gradient{-number_color} = $selection;
    $canvas->set_gradientcolor(%arg_gradient);
  },
);

my $disabled_gradientcolor = $canvas->Button(
  -text    => 'disabled_gradientcolor',
  -command => sub { $canvas->disabled_gradientcolor; },
);
my $enabled_gradientcolor = $canvas->Button(
  -text    => 'enabled_gradientcolor',
  -command => sub { $canvas->enabled_gradientcolor; },
);

$canvas->createWindow( 100, 100, -window => $bouton_color1 );
$canvas->createWindow( 400, 100, -window => $bouton_color2 );
$canvas->createWindow( 100, 150, -window => $start_num );
$canvas->createWindow( 100, 200, -window => $end_num );
$canvas->createWindow( 350, 150, -window => $entry_number_color );
$canvas->createWindow( 350, 200, -window => $type );
$canvas->createWindow( 100, 350, -window => $disabled_gradientcolor );
$canvas->createWindow( 400, 350, -window => $enabled_gradientcolor );

MainLoop;