def initStyleOption(self, option, index):
"""
Initialize `option` with the values using the `index` index. When the
item (0,1) is processed, it is styled especially. All other items are
passed to the original `initStyleOption()` which then calls `displayText()`.
Afterwards, check whether an fixpoint overflow has occured and color item
background accordingly.
"""
if index.row() == 0 and index.column() == 1: # a[0]: always 1
option.text = "1" # QString object
option.font.setBold(True)
option.displayAlignment = Qt.AlignRight | Qt.AlignCenter
# see http://zetcode.com/gui/pyqt5/painting/ :
option.backgroundBrush = QBrush(Qt.BDiagPattern)#QColor(100, 200, 100, 200))
option.backgroundBrush.setColor(QColor(100, 100, 100, 200))
# don't continue with default initStyleOption... display routine ends here
else:
# continue with the original `initStyleOption()` and call displayText()
super(ItemDelegate, self).initStyleOption(option, index)
# test whether fixpoint conversion during displayText() created an overflow:
if self.parent.myQ.ovr_flag > 0:
# Color item backgrounds with pos. Overflows red
option.backgroundBrush = QBrush(Qt.SolidPattern)
option.backgroundBrush.setColor(QColor(100, 0, 0, 80))
elif self.parent.myQ.ovr_flag < 0:
# Color item backgrounds with neg. Overflows blue
option.backgroundBrush = QBrush(Qt.SolidPattern)
option.backgroundBrush.setColor(QColor(0, 0, 100, 80))
def initStyleOption(self, option, index):
"""
Initialize `option` with the values using the `index` index. All items are
passed to the original `initStyleOption()` which then calls `displayText()`.
Afterwards, check whether a pole (index.column() == 1 )is outside the
UC and color item background accordingly (not implemented yet).
"""
# continue with the original `initStyleOption()` and call displayText()
super(ItemDelegate, self).initStyleOption(option, index)
# test whether fixpoint conversion during displayText() created an overflow:
if index.column() == 1 and False:
# Color item backgrounds with pos. Overflows red
option.backgroundBrush = QBrush(Qt.SolidPattern)
option.backgroundBrush.setColor(QColor(100, 0, 0, 80))