Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound - Manage a round

Gtk2-Ex-MindMapView documentation Contained in the Gtk2-Ex-MindMapView distribution.

Index

Code Index:

NAME

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Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound - Manage a round grip type "hot spot" on a ellipse item. This grip differs from the standard grip with respect to where it is placed on the Gtk2::Ex::MindMapView::Item.

VERSION

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This document describes Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound version 0.0.1

SYNOPSIS

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use Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound;

DESCRIPTION

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The Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound is a round grip that may be used to resize a Gtk2::Ex::MindMapView::Border::Ellipse.

This special grip positions itself differently from the other grips.

INTERFACE

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Properties

'item' (Gtk2::Ex::MindMapView::Item)

The item this grip is attached to.

'enabled' (boolean)

If enabled, this grip is ready for action.

'side' (string)

The side on which to attach the grip. May be left or right.

'fill_color_gdk' (Gtk2::Gdk::Color)

The color with which to fill in the hotspot.

'outline_color_gdk' (Gtk2::Gdk::Color)

The color with which to fill in the hotspot outline. Grips usually have the outline set to the same color as the item fill color.

'hotspot_color_gdk' (Gtk2::Gdk::Color)

The color of the hotspot once it is engaged. A hotspot becomes engaged when the mouse is placed close to it.

Methods

new (item=>$item)

Instantiates a Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound hotspot.

hotspot_adjust_event_handler

Positions the grip at the lower left or right corner of the rectangle defined by the insets. This will change for the next release.

hotspot_get_image

Returns a circle (Gnome2::Canvas::Ellipse) as grip image.

DIAGNOSTICS

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No diagnostics.

DEPENDENCIES

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None.

BUGS AND LIMITATIONS

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No bugs have been reported.

Please report any bugs or feature requests to bug-gtk2-ex-mindmapview@rt.cpan.org, or through the web interface at http://rt.cpan.org.

AUTHOR

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James Muir <hemlock@vtlink.net>

LICENCE AND COPYRIGHT

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Copyright (c) 2006, James Muir <hemlock@vtlink.net>. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

DISCLAIMER OF WARRANTY

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BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Gtk2-Ex-MindMapView documentation Contained in the Gtk2-Ex-MindMapView distribution. 
package Gtk2::Ex::MindMapView::HotSpot::Grip::EllipseRound;

our $VERSION = '0.000001';

use warnings;
use strict;
use Carp;

use Gtk2::Ex::MindMapView::ArgUtils;

use Glib ':constants';

use Gnome2::Canvas;

use base 'Gtk2::Ex::MindMapView::HotSpot::Grip';

sub new
{
    my ($class, @attributes) = @_;

    my $self = $class->SUPER::new(@attributes);

    my %attributes = @attributes;

    args_valid(\%attributes, qw(item side enabled radius
				fill_color_gdk outline_color_gdk hotspot_color_gdk));

    arg_default($self, 'enabled', FALSE);

    arg_default($self, 'radius', 3);

    arg_default($self, 'fill_color_gdk',    Gtk2::Gdk::Color->parse('white'));

    arg_default($self, 'outline_color_gdk', Gtk2::Gdk::Color->parse('gray'));

    arg_default($self, 'hotspot_color_gdk', Gtk2::Gdk::Color->parse('orange'));

    $self->{image}   = $self->hotspot_get_image();

    return $self;
}


# $self->hotspot_adjust_event_handler($item);

sub hotspot_adjust_event_handler
{
    my ($self, $item) = @_;

    my $offset = 1;

    my ($x, $y, $width, $height) = $self->{item}->get(qw(x y width height));

    my ($top, $left, $bottom, $right) = $self->{item}->get_insets();

    if ($self->{side} eq 'left')
    {
	_set_point($self, $x + $left, $y + $height - $bottom);
    }
    else
    {
	_set_point($self, $x + $width - $right, $y + $height - $bottom);
    }
}


# my $image = $self->hotspot_get_image();

sub hotspot_get_image
{
    my $self = shift(@_);

    return Gnome2::Canvas::Item->new($self->{item}, 'Gnome2::Canvas::Ellipse',
				     fill_color_gdk=>$self->{fill_color_gdk},
				     outline_color_gdk=>$self->{outline_color_gdk});
}


sub _set_point
{
    my ($self, $x, $y) = @_;

    my $radius = $self->{radius};

    $self->{image}->set(x1=>$x - $radius, y1=>$y - $radius,
			x2=>$x + $radius, y2=>$y + $radius);
}



1; # Magic true value required at end of module
__END__