From c5866f304210618979d03c561b1e3f6f83200bce Mon Sep 17 00:00:00 2001
From: ribet
Date: Wed, 21 Mar 2007 10:19:39 +0000
Subject: Import initial

---
 src/MTools/Anim/MOpacity.pm | 143 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 src/MTools/Anim/MOpacity.pm

(limited to 'src/MTools/Anim/MOpacity.pm')

diff --git a/src/MTools/Anim/MOpacity.pm b/src/MTools/Anim/MOpacity.pm
new file mode 100644
index 0000000..e1882ba
--- /dev/null
+++ b/src/MTools/Anim/MOpacity.pm
@@ -0,0 +1,143 @@
+package MTools::Anim::MOpacity;
+#	This program is free software; you can redistribute it and/or
+#	modify it under the terms of the GNU LGPL Libray General Public License
+#	as published by the Free Software Foundation; either version 2
+#	of the License, or (at your option) any later version.
+#
+#	This program is distributed in the hope that it will be useful,
+#	but WITHOUT ANY WARRANTY; without even the implied warranty of
+#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#	GNU Library General Public License for more details.
+#
+#	You should have received a copy of the GNU Library General Public License
+#	along with this program; if not, write to the Free Software
+#	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA,
+#	or refer to http://www.gnu.org/copyleft/lgpl.html
+#
+##################################################################
+
+# MOpacity permet de realiser une animation sur la transparence d'un objet
+# 
+# proprietes :
+#	* -visible : permet d'activer ou non l'animation
+#	* from_opacity : valeur initiale de l'opacite au depart de l'animation
+#	* to_opacity : valeur de l'opacite a la fin de l'animation
+# 	* duration : duree de l'animation
+#	* loop : marque le caractere repetitif ou non de l'animation
+#	* targets : objets cible de cette animation
+# Evenements :
+#	* ANIMATION_END : Notifie lorque l'annimation se termine
+#	* OPACITY_CHANGED : Notifie lorsque la valeur de l'opacite est changee au cours de l'animation
+#	* ANIMATION_ABORD : Notifie lorsque l'animation est stoppee avant la fin
+# Fonctions : 
+#	* start : demarre l'animation
+#	* stop: arrete l'animation
+#	* isRunning : test si l'animation est en cours
+
+use strict;
+use MTools;
+use MTools::MObjet;
+
+use Anim;
+use Anim::Pacing::Linear;
+use Anim::Path::Rectilinear;
+
+use vars qw /@ISA/;
+
+BEGIN 
+{
+	@ISA = qw /MTools::MObjet/;
+}
+
+use Tk;
+
+sub new {
+	my ($class, %options) = @_;
+	my $self = new MTools::MObjet ();
+	bless $self, $class;
+
+	$self -> recordProperty ('-visible', 0);
+	$self -> recordProperty ('from_opacity', 0);
+	$self -> recordProperty ('to_opacity', 0);
+	$self -> recordProperty ('duration', 1);
+	$self -> recordProperty ('loop', 0);
+	$self -> recordProperty ('targets', undef);
+	$self -> recordEvent ('ANIMATION_END');
+	$self -> recordEvent ('OPACITY_CHANGED');
+	$self -> recordEvent ('ANIMATION_ABORD');
+	$self -> plisten ('-visible', sub { 
+		my ($src, $key, $val) = @_;
+		if ($val == 0)
+		{
+			$self -> stop ();
+		}
+		else
+		{
+			$self -> start ();
+		}
+	});
+	$self -> {__animation} = undef;
+	$self -> mconfigure (%options);
+	return $self;
+}
+
+sub start {
+	my ($self) = @_;
+	my $pacing = new Anim::Pacing::Linear (-duration => $self -> mget ('duration'));
+	$self -> {__opacitydep} = my $opacitydep = $self -> mget ('from_opacity');
+
+	my $animationpath = new Anim::Path::Rectilinear (
+		-xdep => 0,
+		-ydep => 0,
+		-xdest => $self -> mget ('to_opacity') - $opacitydep,
+		-ydest => 0,
+	);
+	$self -> {__opacity} = $opacitydep;
+	$self -> {__animation} = my $animation = new Anim (
+		-pacing => $pacing,
+		-resources => [
+			$animationpath,
+			-command => sub { $self -> __event (@_)},
+			-endcommand => sub {$self -> notify ('ANIMATION_END');$self -> {__animation} = undef;},
+		],
+		-stopcommand => sub {$self -> notify ('ANIMATION_ABORD', $self -> {__opacity});$self -> {__animation} = undef;},
+		-loop => $self -> mget ('loop'),
+	);
+	$animation -> start ();
+}
+
+sub stop {
+	my ($self) = @_;
+	if (defined $self -> {__animation})
+	{
+		$self -> {__animation} -> stop ();
+	}
+}
+
+sub __event {
+	my ($self, $opacity) = @_;
+	$opacity += $self -> {__opacitydep};
+	my @targets = ();
+	my $target = $self -> mget ('targets');
+	if (ref ($target) eq 'ARRAY')
+	{
+		@targets = @{$target};
+	}
+	else
+	{
+		push (@targets, $target);
+	}
+	for (my $i = 0; $i < @targets; $i++)
+	{
+		$targets [$i] -> mconfigure ('-alpha' => $opacity);
+	}
+	$self -> {__opacity} = $opacity;
+	$self -> notify ('OPACITY_CHANGED', $opacity);
+}
+
+sub isRunning {
+	my ($self) = @_;
+	return defined $self -> {__animation};
+}
+
+1;
-- 
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