429 lines
14 KiB
Python
429 lines
14 KiB
Python
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#!/usr/bin/env python3
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'''
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Defintion of Common functions and variables used by stroke font extensions
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Copyright (C) 2019 Shrinivas Kulkarni
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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'''
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import sys, os, fileinput, re, locale
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from inkex import errormsg, addNS, NSS
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from xml.dom.minidom import parse, Document
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from math import ceil
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# TODO: Find inkscape version
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try:
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from lxml import etree
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from inkex import Style, Boolean
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from inkex.paths import Path, CubicSuperPath, Transform
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from inkex import bezier
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ver = 1.0
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except:
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from inkex import etree
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import simplestyle, cubicsuperpath, simplepath, simpletransform
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from cubicsuperpath import CubicSuperPath
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ver = 0.92
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try:
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from simpletransform import computePointInNode
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oldVersion = False
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except:
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oldVersion = True # older than 0.92
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# sys path already includes the module folder
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from stroke_font_manager import CharData, getFontNames, xAscent, \
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xDescent, xCapHeight, xXHeight, xSpaceROff, xFontId, xSize
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class CommonDefs:
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inkVer = ver
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pyVer = sys.version_info.major
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# inx filed that have the font list to be synchronized
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inxFilesWithDynFont = ['render_stroke_font_text.inx', 'edit_stroke_font.inx']
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vgScaleFact = 2.
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lineT = .005
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idAttribName = 'id'
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hGuideIDPrefix = 'h_'
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lvGuideIDPrefix = 'lv_'
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rvGuideIDPrefix = 'rv_'
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fontOtherInfo = 'otherInfo'
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encoding = sys.stdin.encoding
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if(encoding == 'cp0' or encoding is None):
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encoding = locale.getpreferredencoding()
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######### Function variants for 1.0 and 0.92 - Start ##########
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# Used only in 0.92
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def getPartsFromCubicSuper(csp):
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parts = []
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for subpath in csp:
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part = []
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prevBezPt = None
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for i, bezierPt in enumerate(subpath):
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if(prevBezPt != None):
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seg = [prevBezPt[1], prevBezPt[2], bezierPt[0], bezierPt[1]]
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part.append(seg)
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prevBezPt = bezierPt
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parts.append(part)
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return parts
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def formatStyle(styleStr):
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if(CommonDefs.inkVer == 1.0):
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return str(Style(styleStr))
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else:
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return simplestyle.formatStyle(styleStr)
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def getCubicSuperPath(d = None):
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if(CommonDefs.inkVer == 1.0):
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if(d == None): return CubicSuperPath([])
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return CubicSuperPath(Path(d).to_superpath())
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else:
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if(d == None): return []
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return CubicSuperPath(simplepath.parsePath(d))
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def getCubicLength(csp):
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if(CommonDefs.inkVer == 1.0):
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return bezier.csplength(csp)[1]
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else:
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parts = getPartsFromCubicSuper(cspath)
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curveLen = 0
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for i, part in enumerate(parts):
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for j, seg in enumerate(part):
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curveLen += bezmisc.bezierlengthSimpson((seg[0], seg[1], seg[2], seg[3]), \
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tolerance = tolerance)
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return curveLen
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def getCubicBoundingBox(csp):
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if(CommonDefs.inkVer == 1.0):
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bbox = csp.to_path().bounding_box()
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return bbox.left, bbox.right, bbox.top, bbox.bottom
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else:
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return simpletransform.refinedBBox(csp)
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def formatSuperPath(csp):
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if(CommonDefs.inkVer == 1.0):
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return csp.__str__()
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else:
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return cubicsuperpath.formatPath(csp)
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def getParsedPath(d):
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if(CommonDefs.inkVer == 1.0):
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# Copied from Path.to_arrays for compatibility
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return [[seg.letter, list(seg.args)] for seg in Path(d).to_absolute()]
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else:
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return simplepath.parsePath(d)
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def applyTransform(mat, csp):
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if(CommonDefs.inkVer == 1.0):
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csp.transform(mat)
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else:
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simpletransform.applyTransformToPath(mat, csp)
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def getTranslatedPath(d, posX, posY):
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if(CommonDefs.inkVer == 1.0):
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path = Path(d)
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path.translate(posX, posY, inplace = True)
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return path.to_superpath().__str__()
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else:
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path = simplepath.parsePath(d)
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simplepath.translatePath(path, posX, posY)
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return simplepath.formatPath(path)
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def getTransformMat(matAttr):
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if(CommonDefs.inkVer == 1.0):
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return Transform(matAttr)
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else:
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return simpletransform.parseTransform(matAttr)
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def getCurrentLayer(effect):
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if(CommonDefs.inkVer == 1.0):
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return effect.svg.get_current_layer()
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else:
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return effect.current_layer
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def getViewCenter(effect):
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if(CommonDefs.inkVer == 1.0):
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return effect.svg.namedview.center
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else:
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return effect.view_center
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def computePtInNode(vc, layer):
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if(CommonDefs.inkVer == 1.0):
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# ~ return (-Transform(layer.transform * mat)).apply_to_point(vc)
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return (-layer.transform).apply_to_point(vc)
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else:
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if(oldVersion):
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return list(vc)
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else:
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return computePointInNode(list(vc), layer)
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def getSelectedElements(effect):
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if(CommonDefs.inkVer == 1.0):
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return effect.svg.selected
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else:
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return effect.selected
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def getEtree():
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return etree
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def getAddFnTypes(effect):
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if(CommonDefs.inkVer == 1.0):
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addFn = effect.arg_parser.add_argument
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typeFloat = float
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typeInt = int
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typeString = str
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typeBool = Boolean
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else:
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addFn = effect.OptionParser.add_option
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typeFloat = 'float'
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typeInt = 'int'
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typeString = 'string'
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typeBool = 'inkbool'
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return addFn, typeFloat, typeInt, typeString, typeBool
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def runEffect(effect):
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if(CommonDefs.inkVer == 1.0): effect.run()
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else: effect.affect()
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######### Function variants for 1.0 and 0.92 - End ##########
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def getDecodedChars(chars):
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if(CommonDefs.pyVer == 2):
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return chars.decode(CommonDefs.encoding)
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else: #if?
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return chars
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def indentStr(cnt):
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ostr = ''
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for i in range(0, cnt):
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ostr += ' '
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return ostr
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def getXMLItemsStr(sectMarkerLine, sectMarker, fontNames):
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lSpaces = sectMarkerLine.find(sectMarker)
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outStr = indentStr(lSpaces) + sectMarker + ' [start] -->\n'
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for fName in fontNames:
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outStr += indentStr(lSpaces + 4) + '<item value="' + fName + '">' + fName + '</item>\n'
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outStr += indentStr(lSpaces) + sectMarker + ' [end] -->\n'
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return outStr
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def syncFontList(extPath):
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sectMarker = '<!-- ##! dynamically generated portion'
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sectMarkerLine = None
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xmlFilePaths = [extPath + "/" + f for f in CommonDefs.inxFilesWithDynFont]
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try:
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fontNames = getFontNames(extPath)
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for xf in xmlFilePaths:
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for line in fileinput.input(xf, inplace = True):
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if sectMarker in line:
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if(sectMarkerLine != None):
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if(CommonDefs.pyVer == 3):
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# For some reasons python2 giving syntax error without eval
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eval("print(getXMLItemsStr(sectMarkerLine, sectMarker, fontNames), end = '')")
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else:
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print(getXMLItemsStr(sectMarkerLine, sectMarker, fontNames)),
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sectMarkerLine = None
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else:
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sectMarkerLine = line
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else:
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if(sectMarkerLine == None):
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if(CommonDefs.pyVer == 3):
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eval("print(line, end = '')")
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else:
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print(line),
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except Exception as e:
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errormsg('Error updating font list...\n' + str(e))
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def addGridLine(layer, posX, posY, length, lType, style, attribs):
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line = etree.Element(addNS('path','svg'))
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d = 'M '+str(posX) + ' ' + str(posY) +' '+ lType +' '
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if(lType == 'H'):
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d += str(posX + length)
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if(lType == 'V'):
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d += str(posY + length)
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line.set('style', formatStyle(style))
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line.set('d', d)
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for key in attribs:
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line.set(key, attribs[key])
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layer.append(line)
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def addText(layer, textStr, posX, posY, style):
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text = etree.Element(addNS('text','svg'))
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text.text = textStr
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text.set('x', str(posX))
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text.set('y', str(posY))
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text.set('style', formatStyle(style))
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layer.append(text)
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def createTempl(callback, effect, extraInfo, rowCnt, glyphCnt, \
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vgScaleFact, createRvGuides, lineT, newCallBackLayerName = None):
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hgStyle = {'stroke-width':str(lineT), 'opacity':'1', 'stroke':'#ff0066'}
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lvgStyle = {'stroke-width':str(lineT), 'opacity':'1', 'stroke':'#00aa88'}
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rvgStyle = {'stroke-width':str(lineT), 'opacity':'1', 'stroke':'#1b46ff'}
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fontSize = extraInfo[xSize]
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spcY = fontSize * 3
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spcX = fontSize * 3
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fontSize = extraInfo[xSize]
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vLineH = fontSize * vgScaleFact
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colCnt = int(ceil(float(glyphCnt) / float(rowCnt)))
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docW = (colCnt + 1) * spcX
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docH = (rowCnt + 1) * spcY
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svg = effect.document.getroot()
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svg.set('width', str(docW))
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svg.set('height', str(docH))
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#Remove viewbox
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if('viewBox' in svg.attrib):
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svg.attrib.pop('viewBox')
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currLayers = svg.xpath('//svg:g', namespaces = NSS)
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for layer in currLayers:
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# Note: getparent()
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parentLayer = layer.getparent() if(CommonDefs.inkVer == 1.0) \
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else effect.getParentNode(layer)
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if(parentLayer != None):
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parentLayer.remove(layer)
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currExtraElems = svg.xpath('//svg:' + CommonDefs.fontOtherInfo, namespaces = NSS)
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for elem in currExtraElems:
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parentElem = elem.getparent() if(CommonDefs.inkVer == 1.0) \
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else effect.getParentNode(elem)
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parentElem.remove(elem)
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extraInfoElem = etree.SubElement(svg, CommonDefs.fontOtherInfo)
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extraInfoElem.set(xAscent, str(extraInfo[xAscent]))
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extraInfoElem.set(xDescent, str(extraInfo[xDescent]))
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extraInfoElem.set(xCapHeight, str(extraInfo[xCapHeight]))
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extraInfoElem.set(xXHeight, str(extraInfo[xXHeight]))
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extraInfoElem.set(xSpaceROff, str(extraInfo[xSpaceROff]))
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extraInfoElem.set(xFontId, str(extraInfo[xFontId]))
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extraInfoElem.set(xSize, str(extraInfo[xSize]))
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templLayer = etree.SubElement(svg, 'g')
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templLayer.set(addNS('label', 'inkscape'), 'Guides')
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templLayer.set(addNS('groupmode', 'inkscape'), 'layer')
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if(newCallBackLayerName != None):
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callbackLayer = etree.SubElement(svg, 'g')
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callbackLayer.set(addNS('label', 'inkscape'), newCallBackLayerName)
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callbackLayer.set(addNS('groupmode', 'inkscape'), 'layer')
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else:
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callbackLayer = templLayer
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editLayer = etree.SubElement(svg, 'g')
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editLayer.set(addNS('label', 'inkscape'), 'Glyphs')
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editLayer.set(addNS('groupmode', 'inkscape'), 'layer')
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editLayer.set('id', 'glyph')#TODO: How to make this dynamic?
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view = svg.namedview if CommonDefs.inkVer == 1.0 else effect.getNamedView()
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view.set(addNS('current-layer', 'inkscape'), editLayer.get('id'))
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for row in range(0, rowCnt):
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hAttribs = {CommonDefs.idAttribName : CommonDefs.hGuideIDPrefix + str(row)}
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addGridLine(templLayer, 0, \
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(row + 1) * spcY, docW, 'H', hgStyle, hAttribs)
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for col in range(0, colCnt):
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glyphIdx = row * colCnt + col
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if(glyphIdx >= glyphCnt):
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break
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|
|
||
|
|
posX = (col + 1) * spcX
|
||
|
|
posY = (row + 1) * spcY# + lineT / 2
|
||
|
|
|
||
|
|
#Caller can create whatever it wants at this position
|
||
|
|
rOffset = callback(callbackLayer, editLayer, glyphIdx, posX, posY)
|
||
|
|
if(rOffset == None):
|
||
|
|
rOffset = fontSize
|
||
|
|
|
||
|
|
lvAttribs = {CommonDefs.idAttribName : CommonDefs.lvGuideIDPrefix + \
|
||
|
|
str(row).zfill(4) + '_' + str(col).zfill(4)}
|
||
|
|
|
||
|
|
addGridLine(templLayer, \
|
||
|
|
posX, posY + fontSize / 1.5, -vLineH, 'V', \
|
||
|
|
lvgStyle, lvAttribs)
|
||
|
|
|
||
|
|
if(createRvGuides):
|
||
|
|
rvAttribs = {CommonDefs.idAttribName : CommonDefs.rvGuideIDPrefix + \
|
||
|
|
str(row).zfill(4) + '_' + str(col).zfill(4)}
|
||
|
|
|
||
|
|
addGridLine(templLayer, \
|
||
|
|
posX + rOffset, posY + fontSize / 1.5, -vLineH, 'V', \
|
||
|
|
rvgStyle, rvAttribs)
|
||
|
|
|
||
|
|
def getCharStyle(strokeWidth, naChar):
|
||
|
|
#na character is a filled box
|
||
|
|
naStyle = { 'stroke': '#000000', 'fill': '#000000', 'stroke-width': strokeWidth}
|
||
|
|
charStyle = { 'stroke': '#000000', 'fill': 'none', 'stroke-width': strokeWidth,
|
||
|
|
'stroke-linecap':'round', 'stroke-linejoin':'round'}
|
||
|
|
|
||
|
|
if(naChar):
|
||
|
|
return naStyle
|
||
|
|
else:
|
||
|
|
return charStyle
|
||
|
|
|
||
|
|
class InkscapeCharData(CharData):
|
||
|
|
def __init__(self, char, rOffset, pathStr, glyphName):
|
||
|
|
self.pathStr = pathStr
|
||
|
|
super(InkscapeCharData, self).__init__(char, rOffset, glyphName)
|
||
|
|
|
||
|
|
def getBBox(self):
|
||
|
|
return getCubicBoundingBox(getCubicSuperPath(self.pathStr))
|
||
|
|
|
||
|
|
def scaleGlyph(self, scaleX, scaleY):
|
||
|
|
self.rOffset *= scaleX
|
||
|
|
cspath = getCubicSuperPath(self.pathStr)
|
||
|
|
for subpath in cspath:
|
||
|
|
for bezierPts in subpath:
|
||
|
|
for i in range(0, len(bezierPts)):
|
||
|
|
#No worries about origin...
|
||
|
|
bezierPts[i] = [bezierPts[i][0] * scaleX, bezierPts[i][1] * scaleY]
|
||
|
|
self.pathStr = formatSuperPath(cspath)
|
||
|
|
self.bbox = getCubicBoundingBox(cspath)
|
||
|
|
|
||
|
|
class InkscapeCharDataFactory:
|
||
|
|
def __init__(self):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def getCharData(self, char, rOffset, pathStr, glyphName):
|
||
|
|
return InkscapeCharData(char, rOffset, pathStr, glyphName)
|