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"""
Widget displaying an image histogram along with gradient editor. Can be used to adjust
the appearance of images. This is a wrapper around HistogramLUTItem
"""
from ..graphicsItems.HistogramLUTItem import HistogramLUTItem
from ..Qt import QtCore, QtWidgets
from .GraphicsView import GraphicsView
__all__ = ['HistogramLUTWidget']
class HistogramLUTWidget(GraphicsView):
"""QWidget wrapper for :class:`~pyqtgraph.HistogramLUTItem`.
All parameters are passed along in creating the HistogramLUTItem.
"""
def __init__(self, parent=None, *args, **kargs):
background = kargs.pop('background', 'default')
GraphicsView.__init__(self, parent, useOpenGL=False, background=background)
self.item = HistogramLUTItem(*args, **kargs)
self.setCentralItem(self.item)
self.orientation = kargs.get('orientation', 'vertical')
if self.orientation == 'vertical':
self.setSizePolicy(QtWidgets.QSizePolicy.Policy.Preferred, QtWidgets.QSizePolicy.Policy.Expanding)
self.setMinimumWidth(95)
else:
self.setSizePolicy(QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Preferred)
self.setMinimumHeight(95)
def sizeHint(self):
if self.orientation == 'vertical':
return QtCore.QSize(115, 200)
else:
return QtCore.QSize(200, 115)
def __getattr__(self, attr):
return getattr(self.item, attr)
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