Add ShowSymmetries plugin.

ShowSymmetries.glyphsReporter/Contents/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleDisplayName</key>
+	<string>ShowSymmetries</string>
+	<key>CFBundleExecutable</key>
+	<string>ShowSymmetries</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.simon-cozens.ShowSymmetries</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>ShowSymmetries</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>4</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.1.1</string>
+	<key>UpdateFeedURL</key>
+	<string></string>
+	<key>productPageURL</key>
+	<string></string>
+	<key>LSHasLocalizedDisplayName</key>
+	<false/>
+	<key>NSAppleScriptEnabled</key>
+	<false/>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright, by Simon Cozens, 2015</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>ShowSymmetries</string>
+	<key>PyMainFileNames</key>
+	<array>
+		<string>__boot__</string>
+	</array>
+	<key>PyOptions</key>
+	<dict>
+		<key>alias</key>
+		<true/>
+		<key>argv_emulation</key>
+		<false/>
+		<key>no_chdir</key>
+		<false/>
+		<key>optimize</key>
+		<integer>0</integer>
+		<key>prefer_ppc</key>
+		<false/>
+		<key>site_packages</key>
+		<false/>
+		<key>use_pythonpath</key>
+		<false/>
+	</dict>
+	<key>PyResourcePackages</key>
+	<array>
+		<string>lib/python2.6</string>
+		<string>lib/python2.6/lib-dynload</string>
+		<string>lib/python2.6/site-packages.zip</string>
+		<string>lib/python26.zip</string>
+	</array>
+	<key>PyRuntimeLocations</key>
+	<array>
+		<string>@executable_path/../Frameworks/Python.framework/Versions/2.6/Python</string>
+		<string>/System/Library/Frameworks/Python.framework/Versions/2.6/Python</string>
+	</array>
+	<key>PythonInfoDict</key>
+	<dict>
+		<key>PythonExecutable</key>
+		<string>/usr/bin/python2.6</string>
+		<key>PythonLongVersion</key>
+		<string>2.6.7 (r267:88850, Oct 11 2012, 20:15:00) 
+[GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)]</string>
+		<key>PythonShortVersion</key>
+		<string>2.6</string>
+		<key>py2app</key>
+		<dict>
+			<key>template</key>
+			<string>bundle</string>
+			<key>version</key>
+			<string>0.6.3</string>
+		</dict>
+	</dict>
+</dict>
+</plist>

ShowSymmetries.glyphsReporter/Contents/MacOS/python

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+/System/Library/Frameworks/Python.framework/Versions/2.6/bin/python

ShowSymmetries.glyphsReporter/Contents/PkgInfo

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+BNDL????

ShowSymmetries.glyphsReporter/Contents/Resources/ShowSymmetries.py

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+#!/usr/bin/env python
+# encoding: utf-8
+import objc
+from Foundation import *
+from AppKit import *
+import sys, os, re
+from Quartz import CGContextGetCTM, CGAffineTransformInvert, CGContextConcatCTM, CGContextRestoreGState, CGContextSaveGState
+
+MainBundle = NSBundle.mainBundle()
+path = MainBundle.bundlePath() + "/Contents/Scripts"
+if not path in sys.path:
+	sys.path.append( path )
+
+import GlyphsApp
+import glyphmonkey
+from glyphmonkey import GSNodeSet
+
+GlyphsReporterProtocol = objc.protocolNamed( "GlyphsReporter" )
+
+class ShowSymmetries ( NSObject, GlyphsReporterProtocol ):
+
+	def init( self ):
+		bundle = NSBundle.bundleForClass_(ShowSymmetries)
+		self.rotational = bundle.imageForResource_("rotational")
+		self.reflectional = bundle.imageForResource_("reflectional")
+		self.reflecty = bundle.imageForResource_("reflecty")
+		return self
+
+	def interfaceVersion( self ):
+		return 1
+
+	def title( self ):
+		return "Symmetries"
+
+	def keyEquivalent( self ):
+		return None
+
+	def modifierMask( self ):
+		return 0
+
+	def drawForegroundForLayer_( self, Layer ):
+		pass
+
+	def drawSymmetries( self, Layer ):
+		currentZoom = self.getScale()
+		l = Layer.copy()
+		if l.pathCount() > 1:
+			l.removeOverlap()
+		ns = l.selectedNodeSet()
+		if len(ns) == 1: return
+		if len(ns) == 0:
+			sel = []
+			for p in Layer.paths:
+				for n in p.nodes:
+					sel.append(n)
+			ns = GSNodeSet(sel)
+
+		ox, oy = ns.center
+
+		height = self.controller.view().bounds().size.height
+		width = self.controller.view().bounds().size.width
+		context = NSGraphicsContext.currentContext().CGContext()
+		oldat = CGContextGetCTM(context)
+		CGContextSaveGState(context)
+		inverted = CGAffineTransformInvert(oldat)
+		CGContextConcatCTM(context, inverted)
+
+		if ns.equal(ns.copy().rotate(angle=180, ox=ox, oy=oy)):
+			self.rotational.drawInRect_(NSMakeRect(width-125,height-(15+25),25,25))
+
+		if ns.equal(ns.copy().reflect()):
+			self.reflectional.drawInRect_(NSMakeRect(width-95,height-(15+25),25,25))
+
+		if ns.equal(ns.copy().reflect(NSMakePoint(ox,oy), NSMakePoint(ox+100,oy))):
+			self.reflecty.drawInRect_(NSMakeRect(width-65,height-(15+25),25,25))
+
+		CGContextConcatCTM(context, oldat)
+		CGContextRestoreGState(context)
+
+	def drawBackgroundForLayer_( self, Layer ):
+		try:
+			self.drawSymmetries( Layer )
+		except Exception as e:
+			self.logToConsole( "drawBackgroundForLayer_: %s" % str(e) )
+
+	def drawBackgroundForInactiveLayer_( self, Layer ):
+		pass
+
+	def drawTextAtPoint( self, text, textPosition, fontSize=10.0, fontColor=NSColor.colorWithCalibratedRed_green_blue_alpha_( 1, 0, .5, 1 ) ):
+		"""
+		Use self.drawTextAtPoint( "blabla", myNSPoint ) to display left-aligned text at myNSPoint.
+		"""
+		try:
+			glyphEditView = self.controller.graphicView()
+			currentZoom = self.getScale()
+			fontAttributes = { 
+				NSFontAttributeName: NSFont.labelFontOfSize_( fontSize/currentZoom ),
+				NSForegroundColorAttributeName: fontColor }
+			displayText = NSAttributedString.alloc().initWithString_attributes_( text, fontAttributes )
+			textAlignment = 2 # top left: 6, top center: 7, top right: 8, center left: 3, center center: 4, center right: 5, bottom left: 0, bottom center: 1, bottom right: 2
+			glyphEditView.drawText_atPoint_alignment_( displayText, textPosition, textAlignment )
+		except Exception as e:
+			self.logToConsole( "drawTextAtPoint: %s" % str(e) )
+
+	def needsExtraMainOutlineDrawingForInactiveLayer_( self, Layer ):
+		return True
+
+	def getHandleSize( self ):
+		"""
+		Returns the current handle size as set in user preferences.
+		Use: self.getHandleSize() / self.getScale()
+		to determine the right size for drawing on the canvas.
+		"""
+		try:
+			Selected = NSUserDefaults.standardUserDefaults().integerForKey_( "GSHandleSize" )
+			if Selected == 0:
+				return 5.0
+			elif Selected == 2:
+				return 10.0
+			else:
+				return 7.0 # Regular
+		except Exception as e:
+			self.logToConsole( "getHandleSize: HandleSize defaulting to 7.0. %s" % str(e) )
+			return 7.0
+
+	def getScale( self ):
+		"""
+		self.getScale() returns the current scale factor of the Edit View UI.
+		Divide any scalable size by this value in order to keep the same apparent pixel size.
+		"""
+		try:
+			return self.controller.graphicView().scale()
+		except:
+			self.logToConsole( "Scale defaulting to 1.0" )
+			return 1.0
+
+	def setController_( self, Controller ):
+		"""
+		Use self.controller as object for the current view controller.
+		"""
+		try:
+			self.controller = Controller
+		except Exception as e:
+			self.logToConsole( "Could not set controller" )
+
+	def logToConsole( self, message ):
+		"""
+		The variable 'message' will be passed to Console.app.
+		Use self.logToConsole( "bla bla" ) for debugging.
+		"""
+		myLog = "Show %s plugin:\n%s" % ( self.title(), message )
+		NSLog( myLog )

ShowSymmetries.glyphsReporter/Contents/Resources/__boot__.py

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+# def _site_packages():
+# 	import site, sys, os
+# 	paths = []
+# 	prefixes = [sys.prefix]
+# 	if sys.exec_prefix != sys.prefix:
+# 		prefixes.append(sys.exec_prefix)
+# 	for prefix in prefixes:
+# 		if prefix == sys.prefix:
+# 			paths.append(os.path.join("/Library/Python", sys.version[:3], "site-packages"))
+# 			paths.append(os.path.join(sys.prefix, "Extras", "lib", "python"))
+# 		else:
+# 			paths.append(os.path.join(prefix, 'lib', 'python' + sys.version[:3], 'site-packages'))
+# 	if os.path.join('.framework', '') in os.path.join(sys.prefix, ''):
+# 		home = os.environ.get('HOME')
+# 		if home:
+# 			paths.append(os.path.join(home, 'Library', 'Python', sys.version[:3], 'site-packages'))
+# 
+# 	# Workaround for a misfeature in setuptools: easy_install.pth places
+# 	# site-packages way too early on sys.path and that breaks py2app bundles.
+# 	# NOTE: this hacks into an undocumented feature of setuptools and
+# 	# might stop to work without warning.
+# 	sys.__egginsert = len(sys.path)
+# 
+# 	for path in paths:
+# 		site.addsitedir(path)
+# 
+# _site_packages()
+# 
+# def _path_inject():
+# 	import sys
+# 	sys.path[:0] = sys.path[0]
+# 
+# _path_inject()
+
+def _run(*scripts):
+	global __file__
+	import os, sys# , site
+	sys.frozen = 'macosx_plugin'
+	base = os.environ['RESOURCEPATH']
+	# site.addsitedir(base)
+	# site.addsitedir(os.path.join(base, 'Python', 'site-packages'))
+	for script in scripts:
+		path = os.path.join(base, script)
+		__file__ = path
+		execfile(path, globals(), globals())
+
+_run('ShowSymmetries.py')

ShowSymmetries.glyphsReporter/Contents/Resources/__error__.sh

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+#!/bin/sh
+#
+# This is the default bundletemplate error script
+# Note that this DOES NOT present a GUI dialog, because
+# it has no output on stdout, and has a return value of 0.
+#
+if ( test -n "$2" ) ; then
+	echo "[$1] Unexpected Exception:" 1>&2
+	echo "$2: $3" 1>&2
+else
+	echo "[$1] Could not find a suitable Python runtime" 1>&2
+fi