* Move files to trunk

1 files changed, 372 insertions, 0 deletions

diff --git a/lib/GD/Graph/bars.pm b/lib/GD/Graph/bars.pm
new file mode 100644
index 0000000..2650351
--- /dev/null
+++ b/lib/GD/Graph/bars.pm
@@ -0,0 +1,372 @@
+#==========================================================================
+#              Copyright (c) 1995-1998 Martien Verbruggen
+#--------------------------------------------------------------------------
+#
+#   Name:
+#       GD::Graph::bars.pm
+#
+# $Id: bars.pm,v 1.25 2003/06/11 00:43:49 mgjv Exp $
+#
+#==========================================================================
+ 
+package GD::Graph::bars;
+
+($GD::Graph::bars::VERSION) = '$Revision: 1.25 $' =~ /\s([\d.]+)/;
+
+use strict;
+
+use GD::Graph::axestype;
+use GD::Graph::utils qw(:all);
+use GD::Graph::colour qw(:colours);
+
+@GD::Graph::bars::ISA = qw(GD::Graph::axestype);
+
+use constant PI => 4 * atan2(1,1);
+
+sub initialise
+{
+    my $self = shift;
+    $self->SUPER::initialise();
+    $self->set(correct_width => 1);
+}
+
+sub draw_data
+{
+    my $self = shift;
+
+    $self->SUPER::draw_data() or return;
+
+    unless ($self->{no_axes})
+    {
+        # redraw the 'zero' axis
+        if ($self->{rotate_chart})
+        {
+            $self->{graph}->line( 
+                $self->{zeropoint}, $self->{top},
+                $self->{zeropoint}, $self->{bottom},
+                $self->{fgci} );
+        }
+        else
+        {
+            $self->{graph}->line( 
+                $self->{left}, $self->{zeropoint}, 
+                $self->{right}, $self->{zeropoint}, 
+                $self->{fgci} );
+        }
+    }
+    
+    return $self;
+}
+
+sub _top_values
+{
+    my $self = shift;
+    my @topvalues;
+
+    if ($self->{cumulate})
+    {
+	my $data = $self->{_data};
+	for my $i (0 .. $data->num_points - 1)
+	{
+	    push @topvalues, $data->get_y_cumulative($data->num_sets, $i);
+	}
+    }
+
+    return \@topvalues;
+}
+
+#
+# Draw the shadow
+#
+sub _draw_shadow
+{
+    my $self = shift;
+    my ($ds, $i, $value, $topvalues, $l, $t, $r, $b) = @_;
+    my $bsd = $self->{shadow_depth} or return;
+    my $bsci = $self->set_clr(_rgb($self->{shadowclr}));
+
+    if ($self->{cumulate})
+    {
+	return if $ds > 1;
+	$value = $topvalues->[$i];
+	if ($self->{rotate_chart})
+	{
+	    $r = ($self->val_to_pixel($i + 1, $value, $ds))[0];
+	}
+	else
+	{
+	    $t = ($self->val_to_pixel($i + 1, $value, $ds))[1];
+	}
+    }
+
+    # XXX Clean this up
+    if ($value >= 0)
+    {
+	if ($self->{rotate_chart})
+	{
+	    $self->{graph}->filledRectangle(
+		$l, $t + $bsd, $r - $bsd, $b + $bsd, $bsci);
+	}
+	else
+	{
+            $self->{graph}->filledRectangle(
+                $l + $bsd, $t + $bsd, $r + $bsd, $b, $bsci);
+	}
+    }
+    else
+    {
+	if ($self->{rotate_chart})
+	{
+	    $self->{graph}->filledRectangle(
+		$l + $bsd, $t, $r + $bsd, $b, $bsci);
+	}
+	else
+	{
+            $self->{graph}->filledRectangle(
+                $l + $bsd, $b, $r + $bsd, $t + $bsd, $bsci);
+	}
+    }
+}
+
+sub draw_data_set_h
+{
+    my $self = shift;
+    my $ds = shift;
+
+    my $bar_s = $self->{bar_spacing}/2;
+
+    # Pick a data colour
+    my $dsci = $self->set_clr($self->pick_data_clr($ds));
+    # contrib "Bremford, Mike" <mike.bremford@gs.com>
+    my $brci = $self->set_clr($self->pick_border_clr($ds));
+
+    my @values = $self->{_data}->y_values($ds) or
+        return $self->_set_error("Impossible illegal data set: $ds",
+            $self->{_data}->error);
+
+    my $topvalues = $self->_top_values;
+
+    for my $i (0 .. $#values) 
+    {
+        my $value = $values[$i];
+        next unless defined $value;
+
+        my $l = $self->_get_bottom($ds, $i);
+        $value = $self->{_data}->get_y_cumulative($ds, $i)
+            if ($self->{cumulate});
+
+        # CONTRIB Jeremy Wadsack
+        #
+        # cycle_clrs option sets the color based on the point, 
+        # not the dataset.
+        $dsci = $self->set_clr($self->pick_data_clr($i + 1))
+            if $self->{cycle_clrs};
+        $brci = $self->set_clr($self->pick_data_clr($i + 1))
+            if $self->{cycle_clrs} > 1;
+
+        # get coordinates of right and center of bar
+        my ($r, $xp) = $self->val_to_pixel($i + 1, $value, $ds);
+
+        # calculate top and bottom of bar
+        my ($t, $b);
+
+        if (ref $self eq 'GD::Graph::mixed' || $self->{overwrite})
+        {
+            $t = $xp - $self->{x_step}/2 + $bar_s + 1;
+            $b = $xp + $self->{x_step}/2 - $bar_s;
+        }
+        else
+        {
+            $t = $xp 
+                - $self->{x_step}/2
+                + ($ds - 1) * $self->{x_step}/$self->{_data}->num_sets
+                + $bar_s + 1;
+            $b = $xp 
+                - $self->{x_step}/2
+                + $ds * $self->{x_step}/$self->{_data}->num_sets
+                - $bar_s;
+        }
+
+        # draw the bar
+	$self->_draw_shadow($ds, $i, $value, $topvalues, $l, $t, $r, $b);
+        if ($value >= 0)
+        {
+            # positive value
+            $self->{graph}->filledRectangle($l, $t, $r, $b, $dsci)
+                if defined $dsci;
+            $self->{graph}->rectangle($l, $t, $r, $b, $brci) 
+                if defined $brci && $b - $t > $self->{accent_treshold};
+
+            $self->{_hotspots}->[$ds]->[$i] = ['rect', $t, $l, $r, $b]
+        }
+        else
+        {
+            # negative value
+            $self->{graph}->filledRectangle($r, $t, $l, $b, $dsci)
+                if defined $dsci;
+            $self->{graph}->rectangle($l, $t, $r, $b, $brci) 
+                if defined $brci && $b - $t > $self->{accent_treshold};
+
+            $self->{_hotspots}->[$ds]->[$i] = ['rect', $t, $l, $b, $r]
+        }
+    }
+
+    return $ds;
+}
+
+sub draw_data_set_v
+{
+    my $self = shift;
+    my $ds = shift;
+
+    my $bar_s = $self->{bar_spacing}/2;
+
+    # Pick a data colour
+    my $dsci = $self->set_clr($self->pick_data_clr($ds));
+    # contrib "Bremford, Mike" <mike.bremford@gs.com>
+    my $brci = $self->set_clr($self->pick_border_clr($ds));
+
+    my @values = $self->{_data}->y_values($ds) or
+        return $self->_set_error("Impossible illegal data set: $ds",
+            $self->{_data}->error);
+
+    my $topvalues = $self->_top_values;
+
+    for (my $i = 0; $i < @values; $i++) 
+    {
+        my $value = $values[$i];
+        next unless defined $value;
+
+        my $bottom = $self->_get_bottom($ds, $i);
+        $value = $self->{_data}->get_y_cumulative($ds, $i)
+            if ($self->{cumulate});
+
+        # CONTRIB Jeremy Wadsack
+        #
+        # cycle_clrs option sets the color based on the point, 
+        # not the dataset.
+        $dsci = $self->set_clr($self->pick_data_clr($i + 1))
+            if $self->{cycle_clrs};
+        $brci = $self->set_clr($self->pick_data_clr($i + 1))
+            if $self->{cycle_clrs} > 1;
+
+        # get coordinates of top and center of bar
+        my ($xp, $t) = $self->val_to_pixel($i + 1, $value, $ds);
+
+        # calculate left and right of bar
+        my ($l, $r);
+
+        if (ref $self eq 'GD::Graph::mixed' || $self->{overwrite})
+        {
+            $l = $xp - $self->{x_step}/2 + $bar_s + 1;
+            $r = $xp + $self->{x_step}/2 - $bar_s;
+        }
+        else
+        {
+            $l = $xp 
+                - $self->{x_step}/2
+                + ($ds - 1) * $self->{x_step}/$self->{_data}->num_sets
+                + $bar_s + 1;
+            $r = $xp 
+                - $self->{x_step}/2
+                + $ds * $self->{x_step}/$self->{_data}->num_sets
+                - $bar_s;
+        }
+
+        # draw the bar
+	$self->_draw_shadow($ds, $i, $value, $topvalues, $l, $t, $r, $bottom);
+        if ($value >= 0)
+        {
+            # positive value
+            $self->{graph}->filledRectangle($l, $t, $r, $bottom, $dsci)
+                if defined $dsci;
+            $self->{graph}->rectangle($l, $t, $r, $bottom, $brci) 
+                if defined $brci && $r - $l > $self->{accent_treshold};
+
+            $self->{_hotspots}->[$ds]->[$i] = ['rect', $l, $t, $r, $bottom]
+        }
+        else
+        {
+            # negative value
+            $self->{graph}->filledRectangle($l, $bottom, $r, $t, $dsci)
+                if defined $dsci;
+            $self->{graph}->rectangle($l, $bottom, $r, $t, $brci) 
+                if defined $brci && $r - $l > $self->{accent_treshold};
+
+            $self->{_hotspots}->[$ds]->[$i] = ['rect', $l, $bottom, $r, $t]
+        }
+    }
+
+    return $ds;
+}
+
+sub draw_data_set
+{
+    $_[0]->{rotate_chart} ? goto &draw_data_set_h : goto &draw_data_set_v;
+}
+
+sub draw_values
+{
+    my $self = shift;
+
+    return $self unless $self->{show_values};
+    
+    my $text_angle = $self->{values_vertical} ? PI/2 : 0;
+
+    for (my $dsn = 1; $dsn <= $self->{_data}->num_sets; $dsn++)
+    {
+        my @values = $self->{_data}->y_values($dsn) or
+            return $self->_set_error("Impossible illegal data set: $dsn",
+                $self->{_data}->error);
+        my @display = $self->{show_values}->y_values($dsn) or next;
+
+        for (my $i = 0; $i < @values; $i++)
+        {
+            next unless defined $display[$i];
+
+            my $value = $display[$i];
+            if (defined $self->{values_format})
+            {
+                $value = ref $self->{values_format} eq 'CODE' ?
+                    &{$self->{values_format}}($value) :
+                    sprintf($self->{values_format}, $value);
+            }
+
+            my ($xp, $yp);
+            if (defined($self->{x_min_value}) && defined($self->{x_max_value}))
+            {
+                ($xp, $yp) = $self->val_to_pixel(
+                    $self->{_data}->get_x($i), $values[$i], $dsn);
+            }
+            else    
+            {
+                ($xp, $yp) = $self->val_to_pixel($i+1, $values[$i], $dsn);
+            }
+	    if ($self->{rotate_chart})
+	    {
+		$xp += $self->{values_space};
+		unless ($self->{overwrite})
+		{
+		    $yp -= $self->{x_step}/2 - ($dsn - 0.5) 
+			* $self->{x_step}/$self->{_data}->num_sets;
+		}
+	    }
+	    else
+	    {
+		$yp -= $self->{values_space};
+		unless ($self->{overwrite})
+		{
+		    $xp -= $self->{x_step}/2 - ($dsn - 0.5) 
+			* $self->{x_step}/$self->{_data}->num_sets;
+		}
+	    }
+
+            $self->{gdta_values}->set_text($value);
+            $self->{gdta_values}->draw($xp, $yp, $text_angle);
+        }
+    }
+
+    return $self
+}
+
+"Just another true value";