2 This page is in the table of contents.
3 Scalable vector graphics is an export canvas plugin to export the canvas to a scalable vector graphics (.svg) file.
5 When the export menu item in the file menu in an analyze viewer tool, like skeinlayer or skeiniso is clicked, the postscript dialog will be displayed. When the 'Export to Scalable Vector Graphics' button on that dialog is clicked, the canvas will be exported as a scalable vector graphics file. If the 'Scalable Vector Graphics Program' is set to the default 'webbrowser', the scalable vector graphics file will be sent to the default browser to be opened. If the 'Scalable Vector Graphics Program' is set to a program name, the scalable vector graphics file will be sent to that program to be opened.
7 If furthermore the 'File Extension' is set to a file extension, the scalable vector graphics file will be sent to the program, along with the file extension for the converted output. The default is blank because some systems do not have an image conversion program; if you have or will install an image conversion program, a common 'File Extension' is png. A good open source conversion program is Image Magick, which is available at:
8 http://www.imagemagick.org/script/index.php
10 An export canvas plugin is a script in the export_canvas_plugins folder which has the function getNewRepository, and which has a repository class with the functions setCanvasFileNameSuffix to set variables and execute to save the file. It is meant to be run from an analyze viewer tool, like skeinlayer or skeiniso. To ensure that the plugin works on platforms which do not handle file capitalization properly, give the plugin a lower case name.
14 from __future__ import absolute_import
15 #Init has to be imported first because it has code to workaround the python bug where relative imports don't work if the module is imported as a main module.
18 from fabmetheus_utilities import archive
19 from fabmetheus_utilities import gcodec
20 from fabmetheus_utilities import settings
21 from skeinforge_application.skeinforge_utilities import skeinforge_profile
27 __author__ = 'Enrique Perez (perez_enrique@yahoo.com)'
28 __date__ = '$Date: 2008/21/04 $'
29 __license__ = 'GNU Affero General Public License http://www.gnu.org/licenses/agpl.html'
32 def getNewRepository():
34 return ScalableVectorGraphicsRepository()
36 def parseLineReplace( firstWordTable, line, output ):
37 "Parse the line and replace it if the first word of the line is in the first word table."
38 firstWord = gcodec.getFirstWordFromLine(line)
39 if firstWord in firstWordTable:
40 line = firstWordTable[ firstWord ]
41 gcodec.addLineAndNewlineIfNecessary( line, output )
44 class ScalableVectorGraphicsRepository:
45 "A class to handle the export settings."
47 "Set the default settings, execute title & settings fileName."
48 skeinforge_profile.addListsToCraftTypeRepository(
49 'skeinforge_application.skeinforge_plugins.analyze_plugins.export_canvas_plugins.scalable_vector_graphics.html', self)
50 self.fileExtension = settings.StringSetting().getFromValue('File Extension:', self, '')
51 self.svgViewer = settings.StringSetting().getFromValue('SVG Viewer:', self, 'webbrowser')
53 def addCanvasLineToOutput( self, canvasLinesOutput, objectIDNumber ):
54 "Add the canvas line to the output."
55 coordinates = self.canvas.coords( objectIDNumber )
56 xBegin = coordinates[0] - self.boxW
57 xEnd = coordinates[2] - self.boxW
58 yBegin = coordinates[1] - self.boxN
59 yEnd = coordinates[3] - self.boxN
61 color = self.canvas.itemcget( objectIDNumber, 'fill')
62 width = self.canvas.itemcget( objectIDNumber, 'width')
63 line = '<line x1="%s" y1="%s" x2="%s" y2="%s" stroke="%s" stroke-width="%spx"/>\n' % ( xBegin, yBegin, xEnd, yEnd, color, width )
64 canvasLinesOutput.write(line + '\n')
67 "Export the canvas as an svg file."
68 svgFileName = archive.getFilePathWithUnderscoredBasename( self.fileName, self.suffix )
69 boundingBox = self.canvas.bbox( settings.Tkinter.ALL ) # tuple (w, n, e, s)
70 self.boxW = boundingBox[0]
71 self.boxN = boundingBox[1]
72 boxWidth = boundingBox[2] - self.boxW
73 boxHeight = boundingBox[3] - self.boxN
74 print('Exported svg file saved as ' + svgFileName )
75 svgTemplateText = archive.getFileText(archive.getTemplatesPath('canvas_template.svg'))
76 output = cStringIO.StringIO()
77 lines = archive.getTextLines( svgTemplateText )
79 firstWordTable['height="999px"'] = ' height="%spx"' % int( round( boxHeight ) )
80 firstWordTable['<!--replaceLineWith_coloredLines-->'] = self.getCanvasLinesOutput()
81 firstWordTable['replaceLineWithTitle'] = archive.getSummarizedFileName( self.fileName )
82 firstWordTable['width="999px"'] = ' width="%spx"' % int( round( boxWidth ) )
84 parseLineReplace( firstWordTable, line, output )
85 archive.writeFileText( svgFileName, output.getvalue() )
86 fileExtension = self.fileExtension.value
87 svgViewer = self.svgViewer.value
90 if svgViewer == 'webbrowser':
91 settings.openWebPage( svgFileName )
93 svgFilePath = '"' + os.path.normpath( svgFileName ) + '"' # " to send in file name with spaces
94 shellCommand = svgViewer
96 if fileExtension == '':
97 shellCommand += ' ' + svgFilePath
98 print('Sending the shell command:')
100 commandResult = os.system(shellCommand)
101 if commandResult != 0:
102 print('It may be that the system could not find the %s program.' % svgViewer )
103 print('If so, try installing the %s program or look for another svg viewer, like Netscape which can be found at:' % svgViewer )
104 print('http://www.netscape.org/')
106 shellCommand += ' ' + archive.getFilePathWithUnderscoredBasename( svgFilePath, '.' + fileExtension + '"')
107 print('Sending the shell command:')
109 commandResult = os.system(shellCommand)
110 if commandResult != 0:
111 print('The %s program could not convert the svg to the %s file format.' % ( svgViewer, fileExtension ) )
112 print('Try installing the %s program or look for another one, like Image Magick which can be found at:' % svgViewer )
113 print('http://www.imagemagick.org/script/index.php')
115 def getCanvasLinesOutput(self):
116 "Add the canvas line to the output."
117 canvasLinesOutput = cStringIO.StringIO()
118 objectIDNumbers = self.canvas.find_all()
119 for objectIDNumber in objectIDNumbers:
120 if self.canvas.type( objectIDNumber ) == 'line':
121 self.addCanvasLineToOutput( canvasLinesOutput, objectIDNumber )
122 return canvasLinesOutput.getvalue()
124 def setCanvasFileNameSuffix( self, canvas, fileName, suffix ):
125 "Set the canvas and initialize the execute title."
127 self.executeTitle = 'Convert to Scalable Vector Graphics'
128 self.fileName = fileName
129 self.suffix = suffix + '.svg'
133 "Display the file or directory dialog."
134 settings.startMainLoopFromConstructor(getNewRepository())
136 if __name__ == "__main__":