[kupfer] uiutils: Add show_large_type

[Ulrik Sverdrup <usverdrup src gnome org>]

commit f53756ca97e9344d41a3f92d4a85156fc18b20f3
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Tue Oct 27 05:40:32 2009 +0100

    uiutils: Add show_large_type
    
    Add a function to show text very large on-screen, to be similar to
    Quicksilver's "Large Type" function.
    
    We have to round font size down, to make it fit, otherwise it might
    get rounded up and again go ouside our boundaries.

 kupfer/uiutils.py |   43 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)
---
diff --git a/kupfer/uiutils.py b/kupfer/uiutils.py
index 1bc8bd4..a248b3f 100644
--- a/kupfer/uiutils.py
+++ b/kupfer/uiutils.py
@@ -6,6 +6,7 @@ purpose), but care should be taken to only call UI functions from the main
 (default) thread.
 """
 
+import glib
 import gtk
 import pango
 
@@ -111,3 +112,45 @@ def show_text_result(text, title=None):
 	window.resize(hsize, vsize)
 	window.present()
 
+def show_large_type(text):
+	"""
+	Show @text, large, in a result window.
+	"""
+	import math
+	import textwrap
+
+	window = gtk.Window()
+	label = gtk.Label()
+	label.set_text(text)
+
+	def set_font_size(label, fontsize=48.0):
+		siz_attr = pango.AttrFontDesc(
+				pango.FontDescription (str(fontsize)), 0, -1)
+		attrs = pango.AttrList()
+		attrs.insert(siz_attr)
+		label.set_attributes(attrs)
+	label.show()
+
+	size = 72.0
+	set_font_size(label, size)
+
+	maxwid = gtk.gdk.screen_width() - 50
+	maxhei = gtk.gdk.screen_height() - 100
+	wid, hei = label.size_request()
+
+	# Try wrapping a long line
+	if (wid > maxwid or hei > maxhei) and len(text.splitlines()) < 2:
+		label.set_text(textwrap.fill(text))
+
+	wid, hei = label.size_request()
+
+	if wid > maxwid or hei > maxhei:
+		# Round size down to fit inside
+		wscale = maxwid * 1.0/wid
+		hscale = maxhei * 1.0/hei
+		set_font_size(label, math.floor(min(wscale, hscale)*size) or 1.0)
+
+	window.add(label)
+	window.set_position(gtk.WIN_POS_CENTER)
+	window.set_resizable(False)
+	window.show_all()