From 0059e9c2b3f062f4b4a961228dc644dd0c01baf2 Mon Sep 17 00:00:00 2001
From: Mathieu Virbel <mat@kivy.org>
Date: Thu, 1 Nov 2012 04:04:28 +0100
Subject: [PATCH] lang: introduce dp/inches/mm/cm/pt functions into
 kivy.metrics + add access from the lang global map

---
 kivy/lang.py    |  8 ++++++++
 kivy/metrics.py | 27 +++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 kivy/metrics.py

diff --git a/kivy/lang.py b/kivy/lang.py
index 60765f672..383606716 100644
--- a/kivy/lang.py
+++ b/kivy/lang.py
@@ -458,6 +458,8 @@ from kivy.utils import OrderedDict, QueryDict
 from kivy.cache import Cache
 from kivy import kivy_data_dir, require
 from kivy.lib.debug import make_traceback
+from kivy.properties import dpi2px
+import kivy.metrics as metrics
 
 
 trace = Logger.trace
@@ -517,7 +519,13 @@ class ProxyApp(object):
         object.__getattribute__(self, '_ensure_app')()
         return repr(object.__getattribute__(self, '_obj'))
 
+
 global_idmap['app'] = ProxyApp()
+global_idmap['pt'] = metrics.pt
+global_idmap['inch'] = metrics.inch
+global_idmap['cm'] = metrics.cm
+global_idmap['mm'] = metrics.mm
+global_idmap['dp'] = metrics.dp
 
 
 class ParserException(Exception):
diff --git a/kivy/metrics.py b/kivy/metrics.py
new file mode 100644
index 000000000..7d62a450f
--- /dev/null
+++ b/kivy/metrics.py
@@ -0,0 +1,27 @@
+'''
+Display Metrics
+===============
+
+This module give you access to multiple display values, and some conversion
+functions.
+'''
+
+__all__ = ('pt', 'inch', 'cm', 'mm', 'dp')
+
+from kivy.properties import dpi2px
+
+def pt(value):
+    return dpi2px(value, 'pt')
+
+def inch(value):
+    return dpi2px(value, 'in')
+
+def cm(value):
+    return dpi2px(value, 'cm')
+
+def mm(value):
+    return dpi2px(value, 'mm')
+
+def dp(value):
+    return dpi2px(value, 'dp')
+