338 lines
11 KiB
Python
338 lines
11 KiB
Python
#!/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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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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# 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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# 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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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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return str(Style(styleStr))
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def getCubicSuperPath(d = None):
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if(d == None): return CubicSuperPath([])
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return CubicSuperPath(Path(d).to_superpath())
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def getCubicLength(csp):
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return bezier.csplength(csp)[1]
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def getCubicBoundingBox(csp):
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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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def formatSuperPath(csp):
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return csp.__str__()
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def getParsedPath(d):
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return [[seg.letter, list(seg.args)] for seg in Path(d).to_absolute()]
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def applyTransform(mat, csp):
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csp.transform(mat)
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def getTranslatedPath(d, posX, posY):
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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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def getTransformMat(matAttr):
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return Transform(matAttr)
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def getCurrentLayer(effect):
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return effect.svg.get_current_layer()
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def getViewCenter(effect):
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return effect.svg.namedview.center
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def computePtInNode(vc, layer):
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return (-layer.transform).apply_to_point(vc)
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def getSelectedElements(effect):
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return effect.svg.selected
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def getEtree():
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return etree
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def getAddFnTypes(effect):
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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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return addFn, typeFloat, typeInt, typeString, typeBool
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def runEffect(effect):
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effect.run()
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def getDecodedChars(chars):
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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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eval("print(getXMLItemsStr(sectMarkerLine, sectMarker, fontNames), end = '')")
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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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eval("print(line, end = '')")
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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()
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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()
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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
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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
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posY = (row + 1) * spcY# + lineT / 2
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#Caller can create whatever it wants at this position
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rOffset = callback(callbackLayer, editLayer, glyphIdx, posX, posY)
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if(rOffset == None):
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rOffset = fontSize
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lvAttribs = {CommonDefs.idAttribName : CommonDefs.lvGuideIDPrefix + \
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str(row).zfill(4) + '_' + str(col).zfill(4)}
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addGridLine(templLayer, \
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posX, posY + fontSize / 1.5, -vLineH, 'V', \
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lvgStyle, lvAttribs)
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if(createRvGuides):
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rvAttribs = {CommonDefs.idAttribName : CommonDefs.rvGuideIDPrefix + \
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str(row).zfill(4) + '_' + str(col).zfill(4)}
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addGridLine(templLayer, \
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posX + rOffset, posY + fontSize / 1.5, -vLineH, 'V', \
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rvgStyle, rvAttribs)
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def getCharStyle(strokeWidth, naChar):
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#na character is a filled box
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naStyle = { 'stroke': '#000000', 'fill': '#000000', 'stroke-width': strokeWidth}
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charStyle = { 'stroke': '#000000', 'fill': 'none', 'stroke-width': strokeWidth,
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'stroke-linecap':'round', 'stroke-linejoin':'round'}
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if(naChar):
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return naStyle
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else:
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return charStyle
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class InkscapeCharData(CharData):
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def __init__(self, char, rOffset, pathStr, glyphName):
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self.pathStr = pathStr
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super(InkscapeCharData, self).__init__(char, rOffset, glyphName)
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def getBBox(self):
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return getCubicBoundingBox(getCubicSuperPath(self.pathStr))
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def scaleGlyph(self, scaleX, scaleY):
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self.rOffset *= scaleX
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cspath = getCubicSuperPath(self.pathStr)
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for subpath in cspath:
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for bezierPts in subpath:
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for i in range(0, len(bezierPts)):
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#No worries about origin...
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bezierPts[i] = [bezierPts[i][0] * scaleX, bezierPts[i][1] * scaleY]
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self.pathStr = formatSuperPath(cspath)
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self.bbox = getCubicBoundingBox(cspath)
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class InkscapeCharDataFactory:
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def __init__(self):
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pass
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def getCharData(self, char, rOffset, pathStr, glyphName):
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return InkscapeCharData(char, rOffset, pathStr, glyphName)
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