Styled Qt Delegate with complex data

qt_styled_delegate.py

from PySide6 import QtWidgets, QtCore, QtGui

reference_date = QtCore.QDate(2025, 4, 7)

SAMPLE_TICKET_DATA = [
    {
        "id": "PIPE-101",
        "summary": "Fix pipeline issue",
        "assignee": "Alice Tinker",
        "comments": 2,
        "updated": reference_date.addDays(-3).toString("yyyy-MM-dd"),  
        "reporter": "Emma Williams"
    },
    {
        "id": "IT-202",
        "summary": "Resolve network problem",
        "assignee": "Bob Morgan",
        "comments": 0,
        "updated": reference_date.addDays(-8).toString("yyyy-MM-dd"),  
        "reporter": "David Chen"
    },
    {
        "id": "CREHELP-303",
        "summary": "Creature animation bug",
        "assignee": "Charlie Park",
        "comments": 14,
        "updated": reference_date.addDays(-1).toString("yyyy-MM-dd"),  
        "reporter": "Sophia Rodriguez"
    },
    {
        "id": "PIPE-104",
        "summary": "Optimize data flow",
        "assignee": "Alice Tinker",
        "comments": 0,
        "updated": reference_date.addDays(-12).toString("yyyy-MM-dd"),  
        "reporter": "Michael Johnson"
    },
    {
        "id": "IT-205",
        "summary": "Install new software",
        "assignee": "Bob Morgan",
        "comments": 0,
        "updated": reference_date.addDays(-6).toString("yyyy-MM-dd"),  
        "reporter": "Olivia Smith"
    }
]

class TicketItemDelegate(QtWidgets.QStyledItemDelegate):
    def sizeHint(self, option, index):
        # Ideally you would get this from the actual data
        return QtCore.QSize(option.rect.width(), 60)
    
    def paint(self, painter, option, index):
        painter.save()
        ticket = index.data(QtCore.Qt.DisplayRole)
        
        if option.state & QtWidgets.QStyle.State_Selected:
            painter.fillRect(option.rect, option.palette.highlight())
        
        rect = option.rect
        left_margin = 10
        
        initials = "".join([name[0].upper() for name in ticket["reporter"].split() if name])
        circle_size = 30
        circle_rect = QtCore.QRect(
            rect.left() + left_margin, 
            rect.top() + (rect.height() - circle_size) // 2,
            circle_size, 
            circle_size
        )

        # This creates a circle color based on the persons name, like we see in many apps
        painter.setRenderHint(QtGui.QPainter.Antialiasing)        
        name_hash = sum([ord(c) for c in ticket["reporter"]])
        hue = (name_hash % 360) / 360.0
        color = QtGui.QColor.fromHslF(hue, 0.7, 0.5)
        
        painter.setBrush(QtGui.QBrush(color))
        painter.setPen(QtCore.Qt.NoPen)
        painter.drawEllipse(circle_rect)
        
        painter.setPen(QtCore.Qt.white)
        painter.drawText(circle_rect, QtCore.Qt.AlignCenter, initials)
        
        text_left = circle_rect.right() + 10
        text_width = rect.width() - text_left - 10
        
        id_rect = QtCore.QRect(
            text_left, 
            rect.top() + 2,
            text_width - 100,  
            20
        )
        painter.setPen(option.palette.text().color())
        painter.drawText(id_rect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignTop, ticket["id"])
        
        summary_rect = QtCore.QRect(
            text_left, 
            id_rect.bottom() - 2,
            text_width - 100,
            20
        )
        painter.drawText(summary_rect, QtCore.Qt.AlignLeft | QtCore.Qt.AlignTop, ticket["summary"])
        
        assignee_rect = QtCore.QRect(
            rect.right() - 150, 
            rect.top() + 2,
            140,
            20
        )
        painter.drawText(assignee_rect, QtCore.Qt.AlignRight | QtCore.Qt.AlignTop, ticket["assignee"])
        
        # Remember that you can use unicode characters in strings to reduce the text you need.
        comments_text = f"{ticket['comments']} 🗩"
        comments_rect = QtCore.QRect(
            rect.right() - 150, 
            assignee_rect.bottom() - 2,
            140,
            20
        )
        painter.drawText(comments_rect, QtCore.Qt.AlignRight | QtCore.Qt.AlignTop, comments_text)
        
        updated_date = QtCore.QDate.fromString(ticket["updated"], "yyyy-MM-dd")
        current_date = QtCore.QDate.currentDate()
        days_diff = updated_date.daysTo(current_date)
        days_text = f"{days_diff} days ago"
        
        days_rect = QtCore.QRect(
            rect.right() - 150, 
            comments_rect.bottom() - 2,
            140,
            20
        )
        painter.drawText(days_rect, QtCore.Qt.AlignRight | QtCore.Qt.AlignTop, days_text)
        painter.restore()

class TicketListWidget(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        
        layout = QtWidgets.QVBoxLayout(self)
        list_view = QtWidgets.QListView()
        list_view.setAlternatingRowColors(True)
        
        delegate = TicketItemDelegate(self)
        list_view.setItemDelegate(delegate)
        
        model = QtGui.QStandardItemModel()
        list_view.setModel(model)
        
        list_view.setSelectionMode(QtWidgets.QAbstractItemView.SingleSelection)
        list_view.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
        
        layout.addWidget(list_view)
        self.setMinimumSize(500, 300)
        self.setWindowTitle("Ticket List View")
        
        # Load the sample data
        for ticket in SAMPLE_TICKET_DATA:
            item = QtGui.QStandardItem()
            item.setData(ticket, QtCore.Qt.DisplayRole)
            model.appendRow(item)

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    
    widget = TicketListWidget()
    widget.show()
    
    sys.exit(app.exec())