Question

我想使用QTableView构建一个类似十六进制编辑器的视图。每个单元格将表示一个字节的数据。如何配置QTableView选择行为，使其像典型的文本编辑控件一样？也就是说，不是选择矩形区域的单元格，而是选择一条线上的剩余单元格，任何中间线条的全部内容以及最后一条线条上的部分内容。

以图表形式（x被选中，.未被选中），我想要这样：

..................
......xxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxx......
..................

我不想要这个：

..................
......xxxxxx......
......xxxxxx......
......xxxxxx......
......xxxxxx......
..................

Answer 1

最终，我成功地通过对QItemSelectionModel进行子类化并覆盖select方法来更改class RollingItemSelectionModel(QItemSelectionModel): def qindex2index(self, index): """ convert QModelIndex to offset into buffer """ m = self.model() return (m.columnCount() * index.row()) + index.column() def index2qindex(self, index): """ convert offset into buffer into QModelIndex """ m = self.model() r = index // m.columnCount() c = index % m.columnCount() return m.index(r, c) def select(self, selection, selectionFlags): # PyQt5 doesn't have method overloading, so we type switch if isinstance(selection, QItemSelection): # This is the overload with the QItemSelection passed to arg 0 qindexes = selection.indexes() indices = [] for qindex in qindexes: indices.append(self.qindex2index(qindex)) if indices: low = min(indices) high = max(indices) selection = QItemSelection() for i in xrange(low, high): qi = self.index2qindex(i) # inefficient, but functional # manually add all the bytes to select, one-by-one selection.select(qi, qi) elif isinstance(selection, QModelIndex): # This is the overload with the QModelIndex passed to arg 0 # since it's a single index, already works as expected. pass else: # Just in case raise RuntimeError("Unexpected type for arg 0: '%s'" % type(selection)) # Fall through. Select as normal super(RollingItemSelectionModel, self).select(selection, SelectionFlags)的默认行为，如下所述：https://stackoverflow.com/a/10920294/87207

这是我的代码的关键部分：

pointX = transform.localPosition.x + transform.InverseTransformPoint(hit.point).x;

Answer 2

我认为你可以为此目的使用QItemSelection / QItemSelectionRange类。

创建新的项目选择模型：

QItemSelectionModel::select( ... )

然后将其传递给视图：

QAbstractItemView::setSelectionModel( ... )

如何选择QTableView中的单元格，如QTextEdit中的字符？

2 个答案: