Merged r9481:9518 on jblum/grc_reorganize into trunk. Reorganized grc source under gnuradio.grc module. Trunk passes make distcheck.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9525 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 71 insertions, 0 deletions

diff --git a/grc/src/platforms/gui/Utils.py b/grc/src/platforms/gui/Utils.py
new file mode 100644
index 000000000..17750ef45
--- /dev/null
+++ b/grc/src/platforms/gui/Utils.py
@@ -0,0 +1,71 @@
+"""
+Copyright 2008 Free Software Foundation, Inc.
+This file is part of GNU Radio
+
+GNU Radio Companion is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+GNU Radio Companion is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+"""
+
+from Constants import POSSIBLE_ROTATIONS
+
+def get_rotated_coordinate(coor, rotation):
+	"""
+	Rotate the coordinate by the given rotation.
+	@param coor the coordinate x, y tuple
+	@param rotation the angle in degrees
+	@return the rotated coordinates
+	"""
+	#handles negative angles
+	rotation = (rotation + 360)%360
+	assert rotation in POSSIBLE_ROTATIONS
+	#determine the number of degrees to rotate
+	cos_r, sin_r = {
+		0: (1, 0),
+		90: (0, 1),
+		180: (-1, 0),
+		270: (0, -1),
+	}[rotation]
+	x, y = coor
+	return (x*cos_r + y*sin_r, -x*sin_r + y*cos_r)
+
+def get_angle_from_coordinates((x1,y1), (x2,y2)):
+	"""
+	Given two points, calculate the vector direction from point1 to point2, directions are multiples of 90 degrees.
+	@param (x1,y1) the coordinate of point 1
+	@param (x2,y2) the coordinate of point 2
+	@return the direction in degrees
+	"""
+	if y1 == y2:#0 or 180
+		if x2 > x1: return 0
+		else: return 180
+	else:#90 or 270
+		if y2 > y1: return 270
+		else: return 90
+
+def xml_encode(string):
+	"""
+	Encode a string into an xml safe string by replacing special characters.
+	Needed for gtk pango markup in labels.
+	@param string the input string
+	@return output string with safe characters
+	"""
+	string = str(string)
+	for char, safe in (
+			('&', '&'),
+			('<', '&lt;'),
+			('>', '&gt;'),
+			('"', '&quot;'),
+			("'", '&apos;'),
+	): string = string.replace(char, safe)
+	return string