initial release

3 files changed, 512 insertions, 0 deletions

diff --git a/Perl/demos/Tk/demos/zinc_contrib_lib/README b/Perl/demos/Tk/demos/zinc_contrib_lib/README
new file mode 100644
index 0000000..4decc6a
--- /dev/null
+++ b/Perl/demos/Tk/demos/zinc_contrib_lib/README
@@ -0,0 +1 @@
+This directory is for deposing zinc demos contribs
\ No newline at end of file
diff --git a/Perl/demos/Tk/demos/zinc_pm/SimpleRadarControls.pm b/Perl/demos/Tk/demos/zinc_pm/SimpleRadarControls.pm
new file mode 100644
index 0000000..30fffb4
--- /dev/null
+++ b/Perl/demos/Tk/demos/zinc_pm/SimpleRadarControls.pm
@@ -0,0 +1,231 @@
+# $Id$
+# This simple radar has been initially developped by P. Lecoanet <lecoanet@cena.fr>
+# It has been adapted by C. Mertz <mertz@cena.fr> for demo purpose.
+# Thanks to Dunnigan,Jack [Edm]" <Jack.Dunnigan@EC.gc.ca> for a bug correction.
+
+package SimpleRadarControls;
+
+$top = 1;
+
+sub new {
+    my $proto = shift;
+    my $type = ref($proto) || $proto;
+    my ($zinc) = @_;
+    my $self = {};
+
+    $self{'zinc'} = $zinc;
+    $self{'cur_x'} = 0;
+    $self{'cur_y'} = 0;
+    $self{'cur_angle'} = 0;
+    $self{'corner_x'} = 0;
+    $self{'corner_y'} = 0;
+    
+    $self{'tlbbox'} = $zinc->add('group', $top,
+				 -sensitive => 0, -visible => 0,
+				 -tags => 'currentbbox');
+    $zinc->add('rectangle', $self{'tlbbox'}, [-3, -3, +3, +3]);
+    $self{'trbbox'} = $zinc->add('group', $top,
+				 -sensitive => 0, -visible => 0,
+				 -tags => 'currentbbox');
+    $zinc->add('rectangle', $self{'trbbox'}, [-3, -3, +3, +3]);
+    $self{'blbbox'} = $zinc->add('group', $top,
+				 -sensitive => 0, -visible => 0,
+				 -tags => 'currentbbox');
+    $zinc->add('rectangle', $self{'blbbox'}, [-3, -3, +3, +3]);
+    $self{'brbbox'} = $zinc->add('group', $top,
+				 -sensitive => 0, -visible => 0,
+				 -tags => 'currentbbox');
+    $zinc->add('rectangle', $self{'brbbox'}, [-3, -3, +3, +3]);
+    $zinc->add('rectangle', $top, [0, 0, 1, 1],
+	       -linecolor => 'red', -tags => 'lasso',
+	       -visible => 0, -sensitive => 0);
+
+    $zinc->Tk::bind('<Shift-ButtonPress-1>', [\&start_lasso, $self]);
+    $zinc->Tk::bind('<Shift-ButtonRelease-1>', [\&fin_lasso, $self]);
+
+    $zinc->Tk::bind('<ButtonPress-2>', sub { my $ev = $zinc->XEvent();
+					     my @closest = $zinc->find('closest',
+								      $ev->x, $ev->y);
+					     print "at point=$closest[0]\n" });
+    
+    $zinc->Tk::bind('<ButtonPress-3>', [\&press, $self, \&motion]);
+    $zinc->Tk::bind('<ButtonRelease-3>', [\&release, $self]);
+    
+    $zinc->Tk::bind('<Shift-ButtonPress-3>', [\&press, $self, \&zoom]);
+    $zinc->Tk::bind('<Shift-ButtonRelease-3>', [\&release, $self]);
+    
+    $zinc->Tk::bind('<Control-ButtonPress-3>', [\&press, $self, \&rotate]);
+    $zinc->Tk::bind('<Control-ButtonRelease-3>', [\&release, $self]);
+    
+    $zinc->Tk::bind('current', '<Enter>', [\&showbox, $self]);
+    $zinc->Tk::bind('current', '<Leave>', [\&hidebox, $self]);
+
+    bless ($self, $type);
+    return $self;
+}
+
+#
+# Controls for the window transform.
+#
+sub press {
+    my ($zinc, $self, $action) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+
+    $self->{'cur_x'} = $lx;
+    $self->{'cur_y'} = $ly;
+    $self->{'cur_angle'} = atan2($ly, $lx);
+    $zinc->Tk::bind('<Motion>', [$action, $self]);
+}
+
+sub motion {
+    my ($zinc, $self) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+    my @it;
+    my @res;
+    
+    @it = $zinc->find('withtag', 'controls');
+    if (scalar(@it) == 0) {
+	return;
+    }
+    @res = $zinc->transform($it[0], [$lx, $ly, $self->{'cur_x'}, $self->{'cur_y'}]);
+    $zinc->translate('controls', $res[0] - $res[2], $res[1] - $res[3]);
+    $self->{'cur_x'} = $lx;
+    $self->{'cur_y'} = $ly;
+}
+
+sub zoom {
+    my ($zinc, $self) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+    my $maxx;
+    my $maxy;
+    my $sx;
+    my $sy;
+    
+    if ($lx > $self->{'cur_x'}) {
+	$maxx = $lx;
+    } else {
+	$maxx = $self->{'cur_x'};
+    }
+    if ($ly > $self->{'cur_y'}) {
+	$maxy = $ly
+    } else {
+	$maxy = $self->{'cur_y'};
+    }
+    #avoid illegal division by zero
+    return unless ($maxx && $maxy);
+
+    $sx = 1.0 + ($lx - $self->{'cur_x'})/$maxx;
+    $sy = 1.0 + ($ly - $self->{'cur_y'})/$maxy;
+    $self->{'cur_x'} = $lx if ($lx>0); # avoid ZnTransfoDecompose :singular matrix
+    $self->{'cur_y'} = $ly if ($ly>0); # error messages
+    $zinc->scale('controls', $sx, $sy);
+#   $main::scale *= $sx;
+#   main::update_transform($zinc);
+}
+
+sub rotate {
+    my ($zinc, $self) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+    my $langle;
+    
+    $langle = atan2($ly, $lx);
+    $zinc->rotate('controls', -($langle - $self->{'cur_angle'}));
+    $self->{'cur_angle'} = $langle;
+}
+
+sub release {
+    my ($zinc, $self) = @_;
+    $zinc->Tk::bind('<Motion>', '');
+}
+
+sub start_lasso {
+    my ($zinc, $self) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+    my @coords;
+    
+    $self->{'cur_x'} = $lx;
+    $self->{'cur_y'} = $ly;
+    $self->{'corner_x'} = $lx;
+    $self->{'corner_y'} = $ly;
+    @coords = $zinc->transform($top, [$lx, $ly]);
+    $zinc->coords('lasso', [$coords[0], $coords[1], $coords[0], $coords[1]]);
+    $zinc->itemconfigure('lasso', -visible => 1);
+    $zinc->raise('lasso');
+    $zinc->Tk::bind('<Motion>', [\&lasso, $self]);
+}
+
+sub lasso {
+    my ($zinc, $self) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+    my @coords;
+    
+    $self->{'corner_x'} = $lx;
+    $self->{'corner_y'} = $ly;
+    @coords = $zinc->transform($top, [$self->{'cur_x'}, $self->{'cur_y'}, $lx, $ly]);
+    $zinc->coords('lasso', [$coords[0], $coords[1], $coords[2], $coords[3]]);
+}
+
+sub fin_lasso {
+    my ($zinc, $self) = @_;
+    my $enclosed;
+    my $overlapping;
+    
+    $zinc->Tk::bind('<Motion>', '');
+    $zinc->itemconfigure('lasso', -visible => 0);
+    $enclosed = join(', ', $zinc->find('enclosed',
+				       $self->{'cur_x'}, $self->{'cur_y'},
+				       $self->{'corner_x'}, $self->{'corner_y'}));
+    $overlapping = join(', ', $zinc->find('overlapping',
+					  $self->{'cur_x'}, $self->{'cur_y'},
+					  $self->{'corner_x'}, $self->{'corner_y'}));
+    print "enclosed=$enclosed, overlapping=$overlapping\n";
+}
+
+sub showbox {
+    my ($zinc, $self) = @_;
+    my @coords;
+    my @it;
+    
+    if (! $zinc->hastag('current', 'currentbbox')) {
+	@it = $zinc->find('withtag', 'current');
+	if (scalar(@it) == 0) {
+	    return;
+	}
+	@coords = $zinc->transform($top, $zinc->bbox('current'));
+
+	$zinc->coords($self->{'tlbbox'}, [$coords[0], $coords[1]]);
+	$zinc->coords($self->{'trbbox'}, [$coords[2], $coords[1]]);
+	$zinc->coords($self->{'brbbox'}, [$coords[2], $coords[3]]);
+	$zinc->coords($self->{'blbbox'}, [$coords[0], $coords[3]]);
+	$zinc->itemconfigure('currentbbox', -visible => 1);
+    }
+}
+
+sub hidebox {
+    my ($zinc, $self) = @_;
+    my $ev = $zinc->XEvent();
+    my $lx = $ev->x;
+    my $ly = $ev->y;
+    my @next;
+    
+    @next = $zinc->find('closest', $lx, $ly);
+    if ((scalar(@next) == 0) ||
+	! $zinc->hastag($next[0], 'currentbbox') ||
+	$zinc->hastag('current', 'currentbbox')) {
+	$zinc->itemconfigure('currentbbox', -visible => 0);
+    }
+}
+
+
diff --git a/Perl/demos/Tk/demos/zinc_pm/Wheel.pm b/Perl/demos/Tk/demos/zinc_pm/Wheel.pm
new file mode 100644
index 0000000..21ea7a6
--- /dev/null
+++ b/Perl/demos/Tk/demos/zinc_pm/Wheel.pm
@@ -0,0 +1,280 @@
+package Wheel;
+
+use strict 'vars';
+use Carp;
+
+# Animation constants
+my $afterdelay = 60;
+my $stepsnumber = 10;
+# Zoom constants
+my $shrinkrate = 0.80;
+my $zoomrate = 1.1;
+
+#====================
+# Object constructor
+#====================
+sub new {
+    my ($proto, $widget, $x, $y, $radius) = @_;
+  
+    # object attributes
+    my $self = {
+	'widget' => $widget,   # widget reference
+	'origin' => [$x, $y],  # origin coordinates
+	'radius' => $radius,   # wheel radius
+	'topgroup' => undef,   # top Group item
+	'itemclip' => undef,   # id of item which clips the wheel
+	'hand' => undef,       # id of item wich represents the hand
+	'angle' => 60          # the angle between hand and jackpot
+	};
+    bless $self;    
+    
+    # First, we create a new Group item for the wheel. Why a Group item ?
+    # At least two reasons. Wheel object consists of several Zinc items,  
+    # we'll see below; it moves when it is mapped or unmapped, grows when  
+    # you hit the jackpot. So, it's more easy to apply such transformations 
+    # to a structured items set, using Group capability, rather than apply 
+    # to each item separately or using canvas-like Tags mechanism.
+    # Second reason refers to clipping. When it is mapped or unmapped, wheel 
+    # object is drawn inside a circle with variant radius; clipping is a 
+    # specific property of Group item
+
+    # That's why we create a Group item in the top group, and set its
+    # coordinates.
+    $self->{topgroup} = $widget->add('group', 1, -visible => 0);
+    $widget->coords($self->{topgroup}, [$x, $y]);
+    # All the following items will be created in this group...
+    
+    # Create the invisible Arc item used to clip the wheel, centered on the
+    # group origin.
+    $self->{itemclip} = $widget->add('arc',  $self->{topgroup},
+				     [-$radius, -$radius, $radius, $radius],
+				     -visible => 0,
+				     );
+    $widget->itemconfigure($self->{topgroup}, -clip => $self->{itemclip});
+
+    # Create the wheel with 6 filled Arc items centered on the group origin
+    my $i = 0;
+    for my $color (qw(magenta blue cyan green yellow red)) {
+	$widget->add('arc',  $self->{topgroup},
+		     [-$radius, -$radius, $radius, $radius],
+		     -visible => 1,
+		     -filled => 1,
+		     -closed => 1,
+		     -extent => 60,
+		     -pieslice => 1,
+		     -fillcolor => $color,
+		     -linewidth => 0,
+		     -startangle => 60*$i ,
+		     -tags => [$self],
+		     );
+	$i++;
+    }
+    
+    # Create the Text item representing the jackpot.
+    $widget->add('text', $self->{topgroup},
+		 -position => [0, -$radius+20],
+		 -font =>
+		 '-adobe-helvetica-bold-o-normal--34-240-100-100-p-182-iso8859-1',
+		 -anchor => 'center',
+		 -text => "\$",
+		 );
+    
+    # Create the closed Curve item representing the hand.
+    # In order to make processing easier, its rotation axis will be placed
+    # on the group origin.
+    $self->{hand} = $widget->add('curve', $self->{topgroup},
+				 [0, -$radius + 10, 20, -$radius + 40,
+				  6, -$radius + 40, 20, 10,
+				  -20, 10, -6, -$radius + 40,
+				  -20, -$radius + 40],
+				 -linewidth => 3,
+				 -linecolor => 'gray40',
+				 -filled => 1,
+				 -fillcolor => 'gray80',
+				 -closed => 1,
+				 -tags => [$self]);
+    # Then, we apply rotation to the hand using the Zinc 'rotation' method.
+    $widget->rotate($self->{hand}, 3.1416/3);
+    
+    # Then we unmap the wheel; in fact, Group item is translated and its
+    # clipping circle is shrunk to a point.
+    $self->_clipAndTranslate($shrinkrate**$stepsnumber);
+
+    return $self;
+    
+}
+
+#================
+# Public methods
+#================
+
+# Return 1 if wheel is moving (opening or closing animation)
+sub ismoving {
+    my $self = shift;
+    return 1 if $self->{opening} or $self->{closing};
+}
+
+# Display wheel with animation effect
+sub show {
+    my ($self, $x, $y) = @_;
+    # simple lock management
+    return if $self->{opening} or $self->{closing};
+    $self->{opening} = 1;
+    # start animation 
+    $self->_open($x, $y, 0);
+}
+
+
+# Unmap wheel with animation effect
+sub hide {
+    my ($self, $x, $y) = @_;
+    # simple lock management
+    return if $self->{opening} or $self->{closing};
+    $self->{closing} = 1;
+    # start animation
+    $self->_close($x, $y, 0);
+}
+
+
+# Just rotate the hand with animation effect.
+sub rotatehand {
+    my $self = shift;
+    my $angle = shift;
+    return if $self->{turning};
+    $angle = 360 unless $angle;
+    $self->{angle} += $angle;
+    if ($self->{angle} % 360 == 0) {
+	$self->{fortune} = 1;
+    }
+    $self->_rotatehand(2*3.1416*$angle/360);   
+}
+
+
+#=================
+# Private methods
+#=================
+
+# Generate opening animation; see below _clipAndTranslate method for
+# Zinc specific use.
+sub _open {
+    my ($self, $x, $y, $cnt) = @_;
+    my $widget = $self->{widget};
+    my $group = $self->{topgroup};
+    # first step of animation
+    if ($cnt == 0) {
+	$widget->itemconfigure($group, -visible => 1);
+	my @pos = $widget->coords($group);
+	$x = ($x - $pos[0])/$stepsnumber;
+	$y = ($y - $pos[1])/$stepsnumber;
+    # last step
+    } elsif ($cnt == $stepsnumber) {
+	$self->{opening} = undef;
+	return;
+    }
+    $cnt++;
+    # move and grow the wheel
+    $self->_clipAndTranslate(1/$shrinkrate, $x, $y);
+    # process the animation using the 'after' Tk defering method
+    $widget->after($afterdelay, sub {$self->_open($x, $y, $cnt)});
+}
+
+
+# Generate closing animation; see below _clipAndTranslate method for
+# Zinc specific use.
+sub _close {
+    my ($self, $x, $y, $cnt) = @_;
+    my $widget = $self->{widget};
+    my $group = $self->{topgroup};
+    # first step of animation
+    if ($cnt == 0) {
+	my @pos = $widget->coords($group);
+	$x = ($x - $pos[0])/$stepsnumber;
+	$y = ($y - $pos[1])/$stepsnumber;
+    # last step
+    } elsif ($cnt == $stepsnumber) {
+	$widget->itemconfigure($group, -visible => 0);
+	$self->{closing} = undef;
+	return;
+    }
+    $cnt++;
+    # move and shrink the wheel
+    $self->_clipAndTranslate($shrinkrate, $x, $y);
+    # process the animation using the 'after' Tk defering method
+    $widget->after($afterdelay, sub {$self->_close($x, $y, $cnt)});
+}
+
+
+# Generate hand rotation animation.
+sub _rotatehand {
+    my ($self, $angle, $cnt) = @_;
+    my $widget = $self->{widget};
+    my $group = $self->{topgroup};
+    $self->{turning} = 1;
+    # first step of animation
+    if (not $cnt) {
+	$angle /= $stepsnumber;
+    # last step
+    } elsif ($cnt == $stepsnumber) {
+	if ($self->{fortune}) {
+	    $self->_fortune;
+	} else {
+	    $self->{turning} = undef;
+	}
+	return;
+    }
+    $cnt++;
+    # use 'rotation' Zinc method.
+    $widget->rotate($self->{hand}, $angle);
+    
+    # process the animation using the 'after' Tk defering method
+    $widget->after($afterdelay, sub {$self->_rotatehand($angle, $cnt)});
+        
+}
+
+# Generate growing animation to notify jackpot
+sub _fortune {
+    my ($self, $cnt) = @_;
+    my $zf;
+    my $widget = $self->{widget};
+    my $group = $self->{topgroup};
+    my @pos = $widget->coords($group);
+    # last step of animation
+    if ($cnt == 6) {
+	$self->{fortune} = undef;
+	$self->{turning} = undef;
+	return;
+    # event steps : wheel grows
+    } elsif ($cnt % 2 == 0) {
+	$zf = $zoomrate;
+    # odd steps : wheel is shrunk
+    } else {
+	$zf = 1/$zoomrate;
+    }
+    $cnt++;
+    
+    # Now, we apply scale transformation to the Group item, using the 'scale'
+    # Zinc method. Note that we reset group coords before scaling it, in order
+    # that the origin of the transformation corresponds to the center of the
+    # wheel. When scale is done, we restore previous coords of group.
+    $widget->coords($group, [0, 0]);
+    $widget->scale($group, $zf, $zf);
+    $widget->coords($group, \@pos);
+    
+    # process the animation using the 'after' Tk defering method
+    $widget->after(100, sub {$self->_fortune($cnt)});
+    
+}
+
+# Update group clipping and translation, using 'scale' and 'translate'
+# Zinc methods.
+sub _clipAndTranslate {
+    my ($self, $shrinkfactor, $x, $y) = @_;
+    $x = 0 unless $x;
+    $y = 0 unless $y;
+    $self->{widget}->scale($self->{itemclip}, $shrinkfactor, $shrinkfactor);
+    $self->{widget}->translate($self->{topgroup}, $x, $y);
+
+}
+
+
+1;