xps座標計算

[xscale,sin θ,-sin θ,yscale,offsetx,offsety]

def extractglyphs(glyphs,dstpagedic):

global order
canvasrendertransformmatrix = [1,0,0,1,0,0]
glyphsparent = glyphs.getparent()
if 'canvas' in glyphsparent.tag:
attribdic = glyphsparent.attrib
if attribdic.has_key('rendertransform'):
canvasrendertransformmatrix = [float(item) for item in attribdic['rendertransform'].split(',')]

glyphrendertransformmatrix = [float(item) for item in attribdic['rendertransform'].split(',')] if attribdic.has_key('rendertransform') else [1,0,0,1,0,0]

計算寬度佔比用

乙個glyphs節點如下：

x = canvasrendertransformmatrix[0]*(glyphrendertransformmatrix[0]*originx+glyphrendertransformmatrix[4])+canvasrendertransformmatrix[4]

y = canvasrendertransformmatrix[3]*(glyphrendertransformmatrix[3]*originy+glyphrendertransformmatrix[5])+canvasrendertransformmatrix[5]
w = w * glyphrendertransformmatrix[0] * (50 if ord(unicodestring[i].decode()) >=32 and ord(unicodestring[i].decode())<=126 else 100)/100
h = h * glyphrendertransformmatrix[3]

widthsum = widthsum + float(( indiceslist[j].split(',')[1] if len(indiceslist[j].split(','))>1 else (50 if ord(unicodestring[j].decode()) >=32 and ord(unicodestring[j].decode())<=126 else 100) ))

float(( indiceslist[j].split(',')[1] if len(indiceslist[j].split(','))>1 else (50 if ord(unicodestring[j].decode()) >=32 and ord(unicodestring[j].decode())<=126 else 100) ))

然後需要通過寬度百分比和fontrenderingemsize算出前邊字元寬之和，以得到當前的x，y，w，h，其中，w，h的演算法要看indices的長度而定

如：

widthsum = widthsum/100 * fontrenderingemsize

if len(indices) == 1:

x = canvasrendertransformmatrix[0]*(glyphrendertransformmatrix[0]*(originx+widthsum)+glyphrendertransformmatrix[4])+canvasrendertransformmatrix[4]
y = canvasrendertransformmatrix[3]*(glyphrendertransformmatrix[3]*originy+glyphrendertransformmatrix[5])+canvasrendertransformmatrix[5]
。。。elif len(indices) == 4:
x = canvasrendertransformmatrix[0]*(glyphrendertransformmatrix[0]*(originx+fontrenderingemsize*float(indices[2])/100)+glyphrendertransformmatrix[4])+canvasrendertransformmatrix[4]
y = canvasrendertransformmatrix[3]*(glyphrendertransformmatrix[3]*(originy-fontrenderingemsize*float(indices[3])/100)+glyphrendertransformmatrix[5])+canvasrendertransformmatrix[5]  #加上voffset
w = w * glyphrendertransformmatrix[0] * float(indices[1])/100
h = h * glyphrendertransformmatrix[3]
aw = float(indices[1])

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