def __init__(self,
palette: BinnedContinuousPalette,
binning: BinDefinition,
label_formatter=None):
"""
:param palette: palette used for showing continuous values
:param binning: binning used to discretize colors
"""
super().__init__(None)
self.palette = palette
self.binning = binning
if label_formatter is None:
if binning.width is not None:
width = binning.width
else:
width = min([
t2 - t1 for t1, t2 in zip(binning.thresholds,
binning.thresholds[1:])
])
decimals = max(-floor(log10(width)), 0)
label_formatter = "{{:.{}f}}".format(decimals).format
cuts = [label_formatter(l) for l in self.binning.thresholds]
self.labels = [
QStaticText("{} - {}".format(fr, to))
for fr, to in zip(cuts, cuts[1:])
]
font = self.font()
font.setPixelSize(11)
for label in self.labels:
label.prepare(font=font)
self.text_width = max(label.size().width() for label in self.labels)
def __static_text_elided_cache(
self, text: str, font: QFont, fontMetrics: QFontMetrics,
elideMode: Qt.TextElideMode, width: int
) -> QStaticText:
"""
Return a `QStaticText` instance for depicting the text with the `font`
"""
try:
return self.__static_text_lru_cache[text, font, elideMode, width]
except KeyError:
text = fontMetrics.elidedText(text, elideMode, width)
st = QStaticText(text)
st.prepare(QTransform(), font)
# take a copy of the font for cache key
key = text, QFont(font), elideMode, width
self.__static_text_lru_cache[key] = st
return st
def __init__(self, palette, scale):
"""
:param palette: palette used for showing continuous values
:type palette: ContinuousPaletteGenerator
:param scale: an instance of DiscretizedScale that defines the
conversion of values into bins
:type scale: DiscretizedScale
"""
super().__init__(None)
self.palette = palette
self.scale = scale
cuts = ["{0:.{1}f}".format(scale.offset + i * scale.width, scale.decimals)
for i in range(scale.bins + 1)]
self.labels = [QStaticText("{} - {}".format(fr, to))
for fr, to in zip(cuts, cuts[1:])]
for label in self.labels:
label.prepare()
self.text_width = max(label.size().width() for label in self.labels)
def __init__(self, palette, scale, label_formatter=None):
"""
:param palette: palette used for showing continuous values
:type palette: BinnedContinuousPalette
:param scale: an instance of DiscretizedScale that defines the
conversion of values into bins
:type scale: DiscretizedScale
"""
super().__init__(None)
self.palette = palette
self.scale = scale
if label_formatter is None:
label_formatter = "{{:.{}f}}".format(scale.decimals).format
cuts = [label_formatter(scale.offset + i * scale.width)
for i in range(scale.bins + 1)]
self.labels = [QStaticText("{} - {}".format(fr, to))
for fr, to in zip(cuts, cuts[1:])]
self.font = self.font()
self.font.setPointSize(11)
