def resize_column(self, col: int, str_text: Optional[str]) -> None:
"""
Resize a column.
"""
if str_text is None:
return
str_text = str(str_text)
field = self.model().metadata().indexFieldObject(col)
if field.name() in self.widthCols_.keys():
if self.columnWidth(col) < self.widthCols_[field.name()]:
self.header().resizeSection(col, self.widthCols_[field.name()])
else:
wC = self.header().sectionSize(col)
fm = Qt.QFontMetrics(self.header().font())
wH = fm.horizontalAdvance(field.alias() + "W")
if wH < wC:
wH = wC
wC = fm.horizontalAdvance(str_text) + fm.maxWidth()
if wC > wH:
self.header().resizeSection(col, wC)
if col == 0 and self.popup_:
pw = self.parentWidget()
if pw and pw.width() < wC:
self.resize(wC, pw.height())
pw.resize(wC, pw.height())
def drawItemText(self,
painter,
rect,
flags,
pal,
enabled,
text,
textRole=Q.QPalette.NoRole):
"""Redefined from QStyle."""
astr = Q.QFontMetrics(painter.font()).\
elidedText(text, Q.Qt.ElideRight, rect.width())
super(Style, self).drawItemText(painter, rect, flags, pal, enabled,
astr, textRole)
def genBitmap(self):
if self.bitmap is not None:
return self.bitmap
font = Qt.QFont()
font.fromString(self.font)
# for some reason the bounding rect calculated here is wrong by quite a
# bit, so let's use twice as a rough estimation
width = 2 * Qt.QFontMetrics(font).boundingRect(self.text).width()
if not width:
return Bitmap()
image = Qt.QImage(width, HEIGHT, Qt.QImage.Format_Mono)
image.fill(0)
with Qt.QPainter(image) as painter:
# no antialiasing
painter.setRenderHints(Qt.QPainter.RenderHints())
painter.setFont(font)
painter.setPen(Qt.QPen(Qt.QColor('white')))
# here we get the real width of the drawn text
real_width = painter.drawText(0, -self.offset, width,
HEIGHT + self.offset,
Qt.Qt.AlignTop | Qt.Qt.AlignLeft,
self.text).width()
return Bitmap(image, real_width)
