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使用 QTableView 和 QSelectionModel 選擇日歷樣式

Python

慕尼黑8549860 2023-01-04 11:29:57

我正在使用 QTableView 構建自定義日歷視圖，并希望有一個 QItemSelectionModel 可以按天和周連續選擇單元格。不確定從哪里開始，因為選擇模型不與視圖交互。視圖的 onCurrentChange 方法提供當前索引，在 selectionModel 中不起作用。視圖通常連接到更復雜的日歷模型；這里的表格模型是為了說明。from PyQt5.QtCore import QModelIndex, QDatefrom PyQt5.QtCore import Qt, QAbstractTableModel, QItemSelectionModelfrom PyQt5.QtWidgets import QTableViewimport typingclass TableModel(QAbstractTableModel): def __init__(self): super(TableModel, self).__init__() def headerData(self, section: int, orientation: Qt.Orientation, role: int = ...) -> typing.Any: if orientation == Qt.Horizontal and role == Qt.DisplayRole: return QDate.longDayName(section + 1) def data(self, index, role): if role == Qt.DisplayRole: return index.row() * 7 + index.column() + 1 def rowCount(self, index): return 6 def columnCount(self, index): return 7class CalendarSelectionModel(QItemSelectionModel): def __init__(self, *args, **kwargs): super(CalendarSelectionModel, self).__init__(*args, *kwargs) def currentChanged(self, current: QModelIndex, previous: QModelIndex) -> None: print(current, previous)class CalendarView(QTableView): def __init__(self): super(CalendarView, self).__init__() # def currentChanged(self, current: QModelIndex, previous: QModelIndex) -> None: # print(current)if __name__ == '__main__': import sys from PyQt5.QtWidgets import QApplication, QTableView app = QApplication(sys.argv) model = TableModel() cal = CalendarView() cal.setModel(model) sel = CalendarSelectionModel(model) cal.setSelectionModel(sel) cal.show() cal.resize(860, 640) sys.exit(app.exec_())

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Qyouu

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這是日歷樣式選擇的解決方案。在表格上設置 QAbstractItemView.NoSelection 并將選擇邏輯放在 currentChanged 中是一種方法。

import typing

from PyQt5.QtCore import QDate

from PyQt5.QtCore import Qt, QAbstractTableModel, QItemSelectionModel, QItemSelection, QModelIndex

from PyQt5.QtGui import QMouseEvent

from PyQt5.QtWidgets import QTableView, QAbstractItemView

class TableModel(QAbstractTableModel):

def __init__(self):

super(TableModel, self).__init__()

def headerData(self, section: int, orientation: Qt.Orientation, role: int = ...) -> typing.Any:

if orientation == Qt.Horizontal and role == Qt.DisplayRole:

return QDate.longDayName(section + 1)

def data(self, index, role):

if role == Qt.DisplayRole:

return index.row() * 7 + index.column() + 1

def rowCount(self, index):

return 6

def columnCount(self, index):

return 7

class CalendarView(QTableView):

def __init__(self):

super(CalendarView, self).__init__()

self.setSelectionMode(QAbstractItemView.NoSelection)

self._start: typing.Union[QModelIndex, None] = None

def mousePressEvent(self, e: QMouseEvent) -> None:

self._start = self.indexAt(e.pos())

self.clearSelection()

self.selectionModel().select(self._start, QItemSelectionModel.Select)

super(CalendarView, self).mousePressEvent(e)

def index(self, row, col):

return self.model().index(row, col)

def currentChanged(self, current: QModelIndex, previous: QModelIndex) -> None:

if self.state() == QAbstractItemView.DragSelectingState:

self.clearSelection()

if current.row() == self._start.row(): # we only have one row, select from start to current

selection = QItemSelection(self._start, self.model().index(self._start.row(), current.column()))

else: # more than one row selected make the other 2 selections

selection = QItemSelection(self._start, current)

if current.row() < self._start.row(): # stencil out diagonal

right = QItemSelection(current, self.index(self._start.row() - 1, 6))

left = QItemSelection(self.index(current.row() + 1, 0), self._start)

selection.merge(right, QItemSelectionModel.Select)

selection.merge(left, QItemSelectionModel.Select)

if current.column() > self._start.column():

stencil = QItemSelection(self.index(current.row(), current.column() - 1),

self.index(current.row(), 0))

stencil2 = QItemSelection(self.index(self._start.row(), self._start.column() + 1),

self.index(self._start.row(), 6))

selection.merge(stencil, QItemSelectionModel.Deselect)

selection.merge(stencil2, QItemSelectionModel.Deselect)

else:

right = QItemSelection(self._start, self.index(current.row() - 1, 6))

left = QItemSelection(self.index(self._start.row() + 1, 0), current)

selection.merge(right, QItemSelectionModel.Select)

selection.merge(left, QItemSelectionModel.Select)

if current.column() < self._start.column(): # stencil out diagonal

stencil = QItemSelection(self.index(self._start.row(), self._start.column() - 1),

self.index(self._start.row(), 0))

stencil2 = QItemSelection(self.index(current.row(), current.column() + 1),

self.index(current.row(), 6))

selection.merge(stencil, QItemSelectionModel.Deselect)

selection.merge(stencil2, QItemSelectionModel.Deselect)

self.selectionModel().select(selection, QItemSelectionModel.Select)

if __name__ == '__main__':

import sys

from PyQt5.QtWidgets import QApplication, QTableView

app = QApplication(sys.argv)

model = TableModel()

cal = CalendarView()

cal.setModel(model)

cal.show()

cal.resize(860, 640)

sys.exit(app.exec_())

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使用 QTableView 和 QSelectionModel 選擇日歷樣式

使用 QTableView 和 QSelectionModel 選擇日歷樣式

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