From e423da62532558968e1a66bc04c193ffffd38d43 Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Thu, 2 Dec 2010 21:57:14 +0000
Subject: proper length measurement

also, fix vertical placement off-by-one
---
 lib/GridFiller/Chooser/Smarter.pm |  2 ++
 lib/GridFiller/Result/Pango.pm    | 35 ++++++++++++++++++++++++++++++++++-
 script/qr-color.pl                | 26 +++++++++++++++++---------
 3 files changed, 53 insertions(+), 10 deletions(-)

diff --git a/lib/GridFiller/Chooser/Smarter.pm b/lib/GridFiller/Chooser/Smarter.pm
index fd21dae..43ad530 100644
--- a/lib/GridFiller/Chooser/Smarter.pm
+++ b/lib/GridFiller/Chooser/Smarter.pm
@@ -16,6 +16,8 @@ sub find_place_for {
 
     my $length = $self->length->($word);
 
+    $self->log->debug("looking for $length of space");
+
     my @candidates;
 
     push @candidates, $self->_find_places_horiz($length);
diff --git a/lib/GridFiller/Result/Pango.pm b/lib/GridFiller/Result/Pango.pm
index 504f2a7..81eba04 100644
--- a/lib/GridFiller/Result/Pango.pm
+++ b/lib/GridFiller/Result/Pango.pm
@@ -83,6 +83,8 @@ sub _put_squares {
 
     my $size = $self->cell_size;
 
+    $cr->save;
+
     $cr->rectangle(0,0,$self->_width,$self->_height);
     $cr->set_source_rgb(1,1,1);
     $cr->fill;
@@ -101,15 +103,46 @@ sub _put_squares {
         $y+=$size;
     }
 
+    $cr->restore;
+
     return;
 }
 
+sub layout_for_word {
+    my ($self,$word) = @_;
+
+    my $p = Pango::Cairo::create_layout($self->_cairo_c);
+    $p->set_text($word);
+
+    return $p;
+}
+
+my $PI=3.1415926;
+
 sub place_word_at {
     my ($self, $word, $x, $y, $dir) = @_;
 
     $self->log->debug("Placing $word at ${x}:${y} ($dir)");
 
-    $self->_cairo_c;
+    my $p = $self->layout_for_word($word);
+    my $size = $self->cell_size;
+    my $cr = $self->_cairo_c;
+    $x*=$size;$y*=$size;
+
+    $cr->save;
+    if ($dir == $HORIZONTAL) {
+        $cr->move_to($x,$y);
+    }
+    else {
+        $cr->move_to($x+$size,$y);
+        $cr->rotate($PI/2);
+    }
+    Pango::Cairo::update_layout($cr,$p);
+    $cr->set_source_rgb(1,1,0);
+    Pango::Cairo::show_layout($cr,$p);
+    $cr->restore;
+
+    return;
 }
 
 sub as_png {
diff --git a/script/qr-color.pl b/script/qr-color.pl
index 2c7735f..807ec25 100644
--- a/script/qr-color.pl
+++ b/script/qr-color.pl
@@ -10,7 +10,10 @@ use open ':std',':locale';
 use Log::Log4perl qw(:easy);
 Log::Log4perl->easy_init($INFO);
 
-Log::Log4perl->get_logger('GridFiller::Result::Pango')->level($DEBUG);
+#Log::Log4perl->get_logger('GridFiller')->level($INFO);
+#Log::Log4perl->get_logger('GridFiller::Chooser')->level($DEBUG);
+#Log::Log4perl->get_logger('GridFiller::Status')->level($DEBUG);
+#Log::Log4perl->get_logger('GridFiller::Result')->level($DEBUG);
 
 binmode DATA,':utf8';
 
@@ -29,16 +32,21 @@ my $filler=GridFiller->new({
     grid=> $arr,
 });
 
-$filler->result(
-    GridFiller::Result::Pango->new({
-        source_grid => $filler->grid,
-    })
-);
+my $result = GridFiller::Result::Pango->new({
+    source_grid => $filler->grid,
+});
+
+$filler->result($result);
 $filler->status->mode('longest');
-$filler->status->length(sub { int(length(shift)/2) });
-$filler->fill();
+$filler->status->length(
+    sub {
+        my $p = $result->layout_for_word(shift);
+        my ($w,$h) = $p->get_pixel_size;
+        return int(0.5 + $w / $result->cell_size);
+    }
+);
 
-my $result=$filler->result;
+$filler->fill();
 
 $result->save_png('/tmp/qr.png');
 
-- 
cgit v1.2.3