From b4c7485154f73a1cf6b1fc78013f481c5f790c2d Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Wed, 22 Dec 2010 15:46:54 +0000
Subject: font choice, and proper vertical rendering
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

NOTE: hinting:none and antialias:full is needed to get Japanese
displayed correctly… bug?
---
 lib/GridFiller/Result/Pango.pm | 45 ++++++++++++++++++++++++++++++++++++++++++
 lib/GridFiller/Types.pm        | 15 ++++++++++++++
 script/qr-color.pl             |  1 +
 3 files changed, 61 insertions(+)

diff --git a/lib/GridFiller/Result/Pango.pm b/lib/GridFiller/Result/Pango.pm
index 28c697b..a1df972 100644
--- a/lib/GridFiller/Result/Pango.pm
+++ b/lib/GridFiller/Result/Pango.pm
@@ -3,6 +3,7 @@ use Moose;
 use namespace::autoclean;
 use GridFiller::Constants ':directions';
 use MooseX::Types::Moose qw(Int);
+use GridFiller::Types qw(FontDescrT FontOptT);
 use Cairo;
 use Pango;
 use Carp;
@@ -77,6 +78,44 @@ sub _build__cairo_c {
     return $cr;
 }
 
+has font_description => (
+    is => 'ro',
+    isa => FontDescrT,
+    coerce => 1,
+    lazy_build => 1,
+    trigger => \&_adjust_font_description,
+);
+
+sub _build_font_description {
+    my ($self)=@_;
+
+    my $fd = Pango::FontDescription->from_string('Sans 10');
+    return $self->_adjust_font_description($fd);
+}
+
+sub _adjust_font_description {
+    my ($self,$fd) = @_;
+
+    $fd->set_absolute_size($self->cell_size * Pango->scale * 0.8);
+
+    return $fd;
+}
+
+has font_options => (
+    is => 'ro',
+    isa => FontOptT,
+    lazy_build => 1,
+);
+
+sub _build_font_options {
+    my ($self) = @_;
+
+    my $fo = Cairo::FontOptions->create();
+    $fo->set_hint_style('none');
+
+    return $fo;
+}
+
 sub _put_squares {
     my ($self,$cr) = @_;
 
@@ -113,6 +152,10 @@ sub layout_for_string {
     my ($self,$string) = @_;
 
     my $p = Pango::Cairo::create_layout($self->_cairo_c);
+    Pango::Cairo::Context::set_font_options($p->get_context,$self->font_options);
+    Pango::Cairo::update_context($self->_cairo_c,,$p->get_context);
+    $p->context_changed;
+    $p->set_font_description($self->font_description);
     $p->set_text($string);
 
     return $p;
@@ -187,6 +230,8 @@ sub place_word_at {
         $cr->move_to($x,$y);
     }
     else {
+        $p->get_context->set_base_gravity('east');
+        $p->context_changed;
         $y+=$adjustment;
         $cr->move_to($x+$size,$y);
         $cr->rotate($PI/2);
diff --git a/lib/GridFiller/Types.pm b/lib/GridFiller/Types.pm
index 92834ba..90e094f 100644
--- a/lib/GridFiller/Types.pm
+++ b/lib/GridFiller/Types.pm
@@ -1,9 +1,13 @@
 package GridFiller::Types;
+use strict;
+use warnings;
+use namespace::autoclean;
 use MooseX::Types -declare =>
     [qw(
            GridT GridStatusT
            CharT LetterCellT TextResultT
            WordListT
+           FontDescrT FontOptT
    )];
 use MooseX::Types::Moose qw(Str ArrayRef Int);
 use MooseX::Types::Structured qw(Tuple);
@@ -23,4 +27,15 @@ subtype WordListT, as ArrayRef[Str];
 
 subtype TextResultT, as ArrayRef[ArrayRef[LetterCellT]];
 
+class_type FontDescrT, { class => 'Pango::FontDescription' };
+
+coerce FontDescrT,
+    from Str,
+    via {
+        require Pango;
+        Pango::FontDescription->from_string($_);
+    };
+
+class_type FontOptT, { class => 'Cairo::FontOptions' };
+
 1;
diff --git a/script/qr-color.pl b/script/qr-color.pl
index 05f95db..3081bd3 100644
--- a/script/qr-color.pl
+++ b/script/qr-color.pl
@@ -34,6 +34,7 @@ my $filler=GridFiller->new({
 
 my $result = GridFiller::Result::Pango->new({
     source_grid => $filler->grid,
+    ( @ARGV ? (font_description => $ARGV[0]) : () ),
 });
 
 $filler->result($result);
-- 
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