def text(self, txt, position, align=None):
if not txt:
# Hard Skia crash otherwise
return
glyphsInfo = self._gstate.textStyle.shape(txt)
builder = skia.TextBlobBuilder()
builder.allocRunPos(self._gstate.textStyle.font, glyphsInfo.gids,
glyphsInfo.positions)
blob = builder.make()
x, y = position
textWidth = glyphsInfo.endPos[0]
if align is None:
align = "left" if not glyphsInfo.baseLevel else "right"
if align == "right":
x -= textWidth
elif align == "center":
x -= textWidth / 2
self._canvas.save()
try:
self._canvas.translate(x, y)
if self._flipCanvas:
self._canvas.scale(1, -1)
self._drawItem(self._canvas.drawTextBlob, blob, 0, 0)
finally:
self._canvas.restore()
def shapeStringToSkBlob(s, text_font, font_manager):
txt_runs = getTextRuns(s, text_font, font_manager)
tbb_ = skia.TextBlobBuilder()
adv = 0.0
for run in txt_runs:
font = run['font']
tf = font.getTypeface()
fontSize = font.getSize()
text = ''.join(run['str'])
glyphs, positions = shaper(text,
TypefaceTableCache.getTypefaceData(tf),
fontSize)
spositions = []
su = adv
for p in positions:
spositions.append(su)
su += p[0]
tbb_.allocRunPosH(font, glyphs, spositions, 0.0)
adv += su # sum([x[0]+x[1] for x in positions],0.0)
return (tbb_.make(), adv)
def test_TextBlobBuilder_init():
assert isinstance(skia.TextBlobBuilder(), skia.TextBlobBuilder)
def builder():
return skia.TextBlobBuilder()
def makeTextBlob(self, glyphsInfo, align):
self.alignGlyphPositions(glyphsInfo, align)
builder = skia.TextBlobBuilder()
builder.allocRunPos(self.skFont, glyphsInfo.gids, glyphsInfo.positions)
return builder.make()