So I was able to get a "working" solution. If someone could take a look and see if this is the right idea that would really help me out. Qt sometimes give me a false sense that I've done something right then later realize I've completely butchered it :P
I ended up struggling to find a way for the view to update the delegate and found the mouseMoveEvent to trigger a repaint. I passed the hovered row from the mouse to the delegate before the repaint.
As for the paint() in the delegate, I've noticed in some examples uses the following:
painter.save()
~some painter codes
painter.restore()
From the documentation: painter.save()
"Saves the current painter state (pushes the state onto a stack)"
That doesn't really help me under stand why this is needed, as if i comment it out, the code seems to still work. Can someone elaborate the use cases for the painter.save()/restore() please?
from PySide2 import QtGui, QtCore, QtWidgets
import sys
class CustomTableDelegate(QtWidgets.QStyledItemDelegate):
def __init__(self, parent=None):
super(CustomTableDelegate, self).__init__(parent)
self.__current_row = -1
def paint(self, painter, option, index):
painter.save()
value = index.data(QtCore.Qt.DisplayRole)
if self.__current_row == index.row():
if index.column() == 3:
painter.fillRect(option.rect, QtGui.QColor(143,143,143))
painter.setPen(QtGui.QColor(0,255,00))
painter.drawText(option.rect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, value)
else:
painter.fillRect(option.rect, QtGui.QColor(100,100,100))
painter.setPen(QtGui.QColor(0, 255, 255))
painter.drawText(option.rect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, value)
else:
painter.fillRect(option.rect, QtGui.QColor(38, 38, 38))
painter.setPen(QtGui.QColor(200, 200, 200))
painter.drawText(option.rect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter, value)
painter.restore()
def sizeHint(self, *args, **kwargs):
pass
def set_current_row(self, row):
self.__current_row = row
class CustomTableView(QtWidgets.QTableView):
def __init__(self, parent=None):
super(CustomTableView, self).__init__(parent)
def mouseMoveEvent(self, event):
indx = self.indexAt(event.pos())
self.itemDelegate().set_current_row(indx.row())
self.viewport().repaint()
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
data = [["v001", "stuff", "fixing source", '2020-01-14', ''],
["v002", "more stuff", "currently broken", '2020-06-30', ''],
["v003", "too much stuff", "scaling issues", '2020-02-08', ''],
["v088", "still missing stuff", "not coment", '2020-11-13', ''],]
table_view = CustomTableView()
table_view.setShowGrid(False)
table_view.setMouseTracking(True)
table_view.setItemDelegate(CustomTableDelegate(table_view))
table_view.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
table_view.setSelectionMode(QtWidgets.QAbstractItemView.SingleSelection)
header = table_view.horizontalHeader()
header.setStretchLastSection(True)
vertical_header = table_view.verticalHeader()
vertical_header.hide()
model = QtGui.QStandardItemModel()
model.setHorizontalHeaderLabels(['version', 'file', 'comment', 'date'])
table_view.setModel(model)
for r in range(len(data)):
for c in range(4):
model.setItem(r, c, QtGui.QStandardItem(data[r][c]))
table_view.show()
sys.exit(app.exec_())
