return missing font errors in from the error method, add tests for the

various fonts we look for.

diff --git a/Graph.pm b/Graph.pm
index 32459b613ead017ef6bde596377a4bde792c19a8..bde67f9eb0cff486f55fea234ef5a0f7bfd4fdfe 100644 (file)
--- a/Graph.pm
+++ b/Graph.pm
@@ -1220,10 +1220,10 @@ sub _text_style {
     %work = %{$self->{_style}{text}};
   }
   $work{font}
-      or return $self->_error("$name has no font parameter");
+    or return $self->_error("$name has no font parameter");
 
   $work{font} = $self->_get_thing("$name.font")
-    or return $self->_error("invalid font");
+    or return $self->_error("No $name.font defined, either set $name.font or font to a font");
   UNIVERSAL::isa($work{font}, "Imager::Font")
       or return $self->_error("$name.font is not a font");
   if ($work{color} && !ref $work{color}) {
@@ -1240,11 +1240,9 @@ sub _text_style {
 sub _text_bbox {
   my ($self, $text, $name) = @_;
 
-  my %text_info = $self->_text_style($name);
+  my %text_info = $self->_text_style($name)
+    or return;
 
-  if (!defined $text_info{font}) {
-    die "No font or invalid font specified, and we're trying to draw text.\n";
-  }
   my @bbox = $text_info{font}->bounding_box(%text_info, string=>$text,
                                            canon=>1);
 
@@ -1366,7 +1364,8 @@ sub _draw_legend_horizontal {
   my @sizes;
   my @offsets;
   for my $label (@$labels) {
-    my @text_box = $self->_text_bbox($label, 'legend');
+    my @text_box = $self->_text_bbox($label, 'legend')
+      or return;
     push(@sizes, \@text_box);
     my $entry_width = $patchsize + $gap + $text_box[2];
     if ($pos == 0) {
@@ -1462,7 +1461,8 @@ sub _draw_legend_vertical {
   my ($width, $height) = (0,0);
   my @sizes;
   for my $label (@$labels) {
-    my @box = $self->_text_bbox($label, 'legend');
+    my @box = $self->_text_bbox($label, 'legend')
+      or return;
     push(@sizes, \@box);
     $width = $box[2] if $box[2] > $width;
     if ($minrowsize > $box[3]) {
@@ -1544,11 +1544,13 @@ sub _draw_title {
   my ($self, $img, $chart_box) = @_;
 
   my $title = $self->{_style}{title}{text};
-  my @box = $self->_text_bbox($title, 'title');
+  my @box = $self->_text_bbox($title, 'title')
+    or return;
   my $yoff = $box[1];
   @box[0,1] = (0,0);
   $self->_align_box(\@box, $chart_box, 'title');
-  my %text_info = $self->_text_style('title');
+  my %text_info = $self->_text_style('title')
+    or return;
   $img->string(%text_info, x=>$box[0], 'y'=>$box[3] + $yoff, text=>$title);
   $self->_remove_box($chart_box, \@box);
   1;

diff --git a/lib/Imager/Graph/Pie.pm b/lib/Imager/Graph/Pie.pm
index 4bdb50abc144ecc7ac5e535ab0eb645ae4f6821b..dcba2ae5a0f5dfec0f5af3fe80a681436e090693 100644 (file)
--- a/lib/Imager/Graph/Pie.pm
+++ b/lib/Imager/Graph/Pie.pm
@@ -272,7 +272,9 @@ sub draw {
       elsif ($style->{features}{labels}) {
         $item->{label} = 1;
       }
-      $item->{lbox} = [ $self->_text_bbox($item->{text}, 'label') ];
+      my @lbox = $self->_text_bbox($item->{text}, 'label')
+       or return;
+      $item->{lbox} = \@lbox;
       if ($item->{label}) {
         unless ($self->_fit_text(0, 0, 'label', $item->{text}, $guessradius,
                                  $item->{begin}, $item->{end})) {
@@ -282,7 +284,9 @@ sub draw {
       $item->{callout} = 1 if $style->{features}{allcallouts};
       if ($item->{callout}) {
         $item->{label} = 0;
-       $item->{cbox} = [ $self->_text_bbox($item->{text}, 'callout') ];
+       my @cbox = $self->_text_bbox($item->{text}, 'callout')
+         or return;
+       $item->{cbox} = \@cbox;
        $item->{cangle} = ($item->{begin} + $item->{end}) / 2;
        my $dist = cos($item->{cangle}) * ($guessradius+
                                            $callout_outside);
@@ -361,8 +365,10 @@ sub draw {
 
   my $callout_inside = $radius - $self->_get_number('callout.inside');
   $callout_outside += $radius;
-  my %callout_text = $self->_text_style('callout');
-  my %label_text = $self->_text_style('label');
+  my %callout_text = $self->_text_style('callout')
+    or return;
+  my %label_text = $self->_text_style('label')
+    or return;
   for my $label (@info) {
     if ($label->{label}) {
       my @loc = $self->_fit_text($cx, $cy, 'label', $label->{text}, $radius,
@@ -378,7 +384,9 @@ sub draw {
       }
       else {
         $label->{callout} = 1;
-        $label->{cbox} = [ $self->_text_bbox($label->{text}, 'callout') ]; 
+       my @cbox = $self->_text_bbox($label->{text}, 'callout')
+         or return;
+        $label->{cbox} = \@cbox; 
         $label->{cangle} = ($label->{begin} + $label->{end}) / 2;
       }
     }

diff --git a/t/t10pie.t b/t/t10pie.t
index e8493c9c16d0b61e4a77c596aa837e0f5e7a5457..7e3d61c0d9ade9123ef924cbb4c1fc740ec8ae11 100644 (file)
--- a/t/t10pie.t
+++ b/t/t10pie.t
@@ -21,7 +21,7 @@ my $font = Imager::Font::Test->new();
 my @data = ( 100, 180, 80, 20, 2, 1, 0.5 );
 my @labels = qw(alpha beta gamma delta epsilon phi gi);
 
-plan tests => 16;
+plan tests => 26;
 
 my $pie = Imager::Graph::Pie->new;
 ok($pie, "creating pie chart object");
@@ -129,6 +129,59 @@ cmpimg($img6, "testimg/t10_hlegend.png", 550_000);
   cmpimg($img, 'testimg/t10_noother.png', 500_000);
 }
 
+{ # RT #535
+  # no font parameter would crash
+  my $im = $pie->draw
+    (
+     data => \@data,
+     title => 'test',
+    );
+  ok(!$im, "should fail to produce titled graph with no font");
+  like($pie->error, qr/title\.font/, "message should mention which font");
+
+  $im = $pie->draw
+    (
+     labels => \@labels,
+     data => \@data,
+     features => [ 'legend' ],
+    );
+  ok(!$im, "should fail to produce legended graph with no font");
+  like($pie->error, qr/legend\.font/, "message should mention which font");
+
+  $im = $pie->draw
+    ( 
+     data => \@data,
+     labels => \@labels,
+     features => [ 'legend' ],
+     legend => { orientation => "horizontal" },
+    );
+  ok(!$im, "should fail to produce horizontal legended graph with no font");
+  like($pie->error, qr/legend\.font/, "message should mention which font");
+
+  $im = $pie->draw
+    (
+     data => \@data,
+     labels => \@labels,
+    );
+  ok(!$im, "should fail to produce labelled graph with no font");
+  like($pie->error, qr/label\.font/, "message should mention which font");
+
+ SKIP: 
+  {
+    $font
+      or skip("No font to setup the callout font", 2);
+    $im = $pie->draw
+      (
+       data => \@data,
+       labels => \@labels,
+       features => [ 'allcallouts' ],
+       label => { font => $font },
+      );
+    ok(!$im, "should fail to produce callout labelled graph with no font");
+    like($pie->error, qr/callout\.font/, "message should mention which font");
+  }
+}
+
 sub cmpimg {
   my ($img, $file, $limit) = @_;