From c9c290dd139941dfc72826b6854607c0c304f7ca Mon Sep 17 00:00:00 2001
From: "attila.lendvai" <attila.lendvai@gmail.com>
Date: Wed, 22 Feb 2006 17:10:26 -0500
Subject: [PATCH] Some graphviz related changes

darcs-hash:20060222221026-6b9e8-cca3d7e3855a6df4f6eb7b37da544dc8a5c8b829.gz
---
 dev/graphviz/graphviz-support-optional.lisp |    2 +-
 dev/graphviz/graphviz-support.lisp          |   22 +++++++++++++++++++++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/dev/graphviz/graphviz-support-optional.lisp b/dev/graphviz/graphviz-support-optional.lisp
index cdc1626..9b4c2f1 100644
--- a/dev/graphviz/graphviz-support-optional.lisp
+++ b/dev/graphviz/graphviz-support-optional.lisp
@@ -31,7 +31,7 @@ loaded when cl-graphviz is available.
                      :graph-visitor
                      (lambda (dot-graph)
                        (setf (dot-attribute-value :bb g)
-                             (graphviz:graph-bounding-box dot-graph)))
+                               (graphviz:graph-bounding-box dot-graph)))
 
                      :node-visitor
                      (lambda (node)
diff --git a/dev/graphviz/graphviz-support.lisp b/dev/graphviz/graphviz-support.lisp
index a974d64..99b8f7b 100644
--- a/dev/graphviz/graphviz-support.lisp
+++ b/dev/graphviz/graphviz-support.lisp
@@ -244,6 +244,7 @@ B--D []
   '((:size coordinate)
     (:bb bounding-box)
     (:page text)
+    (:dpi float)
     (:ratio (:fill :compress :auto)) ;; Could actually be a float number too
     (:margin float)
     (:nodesep float)
@@ -264,6 +265,7 @@ B--D []
   '((:pos coordinate)
     (:height float)
     (:width float)
+    (:margin float)
     (:fixed-size boolean)
     (:label text)
     (:shape (:record :plaintext :ellipse :circle :egg :triangle :box
@@ -347,6 +349,22 @@ B--D []
 (defmethod dot-attribute-value ((attr symbol) (thing dot-attributes-mixin))
   (getf (dot-attributes thing) attr))
 
+(defmacro defpixel-inch-accessors (name attr type)
+  (bind ((actual-name (form-symbol name "-IN-PIXELS")))
+    `(progn
+      (export ',actual-name)
+      (defmethod ,actual-name ((thing ,type))
+        "Return the attribute in pixels assuming 72 dpi"
+        (awhen (dot-attribute-value ,attr thing)
+          (* 72 it)))
+      (defmethod (setf ,actual-name) (value (thing ,type))
+        "Set the attribute in pixels assuming 72 dpi"
+        (setf (dot-attribute-value ,attr thing) (coerce (/ value 72) 'double-float))))))
+
+(defpixel-inch-accessors width :width dot-vertex-mixin)
+(defpixel-inch-accessors height :height dot-vertex-mixin)
+
+
 (defmethod graph->dot-properties ((graph dot-graph-mixin) (stream t))
   (loop for (name value) on (dot-attributes graph) by #'cddr
         do
@@ -429,7 +447,9 @@ B--D []
               ((member text)
                (textify value))
               ((member float)
-               (coerce value 'single-float))
+               ;; graphviz does not support the 1.2e-3 format
+               (with-output-to-string (str)
+                 (format str "~,f" (coerce value 'single-float))))
               (list
                (unless (member value value-type :test 'equal)
                  (error "Invalid value for ~S: ~S is not one of ~S"
-- 
1.7.10.4