Question

我只在linux上遇到此行为。在Windows上，这个问题不会发生。

我有一个使用模型/视图框架的表。其中一列是可编辑的，当我输入它来更改数据时，旧数据在后台仍然可见，而我在前台编辑数据。

我不确定是什么导致这种情况，我尝试过翻转各种设置，但我一直无法改变行为。

也许一个更简单的问题仍然可以帮助我：我正确地查看此问题的视图代码是否正确？该模型可能与此有关吗？我是否需要在模型中设置任何当前正在编辑的标志？

假设视图是问题的所在，我使用的是大多数视图逻辑。以下代码有一些注意事项：我注入了QTableViews和QTreeViews之间使用的公共代码，所以这个类有一些没有明确列为方法的函数：

from __future__ import absolute_import, division, print_function
from guitool.__PYQT__ import QtCore, QtGui
from guitool import api_item_view
from guitool.guitool_decorators import signal_, slot_

API_VIEW_BASE = QtGui.QTableView    

class APITableView(API_VIEW_BASE):
    rows_updated = signal_(str, int)
    contextMenuClicked = signal_(QtCore.QModelIndex, QtCore.QPoint)
    API_VIEW_BASE = API_VIEW_BASE

    def __init__(view, parent=None):
        API_VIEW_BASE.__init__(view, parent)
        api_item_view.injectviewinstance(view)
        view._init_table_behavior()
        view._init_header_behavior()
        view.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
        view.customContextMenuRequested.connect(view.on_customMenuRequested)

    #---------------
    # Initialization
    #---------------

    def _init_table_behavior(view):
        view.setCornerButtonEnabled(False)
        view.setWordWrap(True)
        view.setSortingEnabled(True)
        view.setShowGrid(True)

        # Selection behavior            #view.setSelectionBehavior(QtGui.QAbstractItemView.SelectColumns)
        view.setSelectionBehavior(QtGui.QAbstractItemView.SelectItems)

        view._defaultEditTriggers = QtGui.QAbstractItemView.AllEditTriggers
        view.setEditTriggers(view._defaultEditTriggers)    
        view.setIconSize(QtCore.QSize(64, 64))

    def _init_header_behavior(view):
        """ Header behavior """
        # Row Headers
        verticalHeader = view.verticalHeader()
        verticalHeader.setVisible(True)
        #verticalHeader.setSortIndicatorShown(True)
        verticalHeader.setHighlightSections(True)
        verticalHeader.setResizeMode(QtGui.QHeaderView.Interactive)
        verticalHeader.setMovable(True)

        # Column headers
        horizontalHeader = view.horizontalHeader()
        horizontalHeader.setVisible(True)
        horizontalHeader.setStretchLastSection(True)
        horizontalHeader.setSortIndicatorShown(True)
        horizontalHeader.setHighlightSections(True)
        # Column Sizes
        # DO NOT USE ResizeToContents. IT MAKES THINGS VERY SLOW
        #horizontalHeader.setResizeMode(QtGui.QHeaderView.ResizeToContents)
        #horizontalHeader.setResizeMode(QtGui.QHeaderView.Stretch)
        horizontalHeader.setResizeMode(QtGui.QHeaderView.Interactive)
        #horizontalHeader.setCascadingSectionResizes(True)
        # Columns moveable
        horizontalHeader.setMovable(True)

    #---------------
    # Qt Overrides
    #---------------

    def setModel(view, model):
        """ QtOverride: Returns item delegate for this index """
        api_item_view.setModel(view, model)

    def keyPressEvent(view, event):
        assert isinstance(event, QtGui.QKeyEvent)
        API_VIEW_BASE.keyPressEvent(view, event)
        if event.matches(QtGui.QKeySequence.Copy):
            #print('Received Ctrl+C in View')
            view.copy_selection_to_clipboard()
        #print ('[view] keyPressEvent: %s' % event.key())

    def mouseMoveEvent(view, event):
        assert isinstance(event, QtGui.QMouseEvent)
        API_VIEW_BASE.mouseMoveEvent(view, event)

    def mousePressEvent(view, event):
        assert isinstance(event, QtGui.QMouseEvent)
        API_VIEW_BASE.mousePressEvent(view, event)
        #print('no editing')
        view.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers)

    def mouseReleaseEvent(view, event):
        assert isinstance(event, QtGui.QMouseEvent)
        #print('editing ok')
        view.setEditTriggers(view._defaultEditTriggers)
        API_VIEW_BASE.mouseReleaseEvent(view, event)

    def clearSelection(view, *args, **kwargs):
        print('[table_view] clear selection')
        API_VIEW_BASE.clearSelection(view, *args, **kwargs)

    #---------------
    # Slots
    #---------------

    @slot_(str, int)
    def on_rows_updated(view, tblname, num):
        # re-emit the model signal
        view.rows_updated.emit(tblname, num)

    @slot_(QtCore.QPoint)
    def on_customMenuRequested(view, pos):
        index = view.indexAt(pos)
        view.contextMenuClicked.emit(index, pos)

# ----
# Injected funcs from api_item_view 

@register_view_method
def infer_delegates(view, **headers):
    """ Infers which columns should be given item delegates """
    get_thumb_size = headers.get('get_thumb_size', None)
    col_type_list  = headers.get('col_type_list', [])
    num_cols = view.model().columnCount()
    num_duplicates = int(num_cols / len(col_type_list))
    col_type_list = col_type_list * num_duplicates
    for colx, coltype in enumerate(col_type_list):
        if coltype in  qtype.QT_PIXMAP_TYPES:
            if VERBOSE:
                print('[view] colx=%r is a PIXMAP' % colx)
            thumb_delegate = APIThumbDelegate(view, get_thumb_size)
            view.setItemDelegateForColumn(colx, thumb_delegate)
        elif coltype in qtype.QT_BUTTON_TYPES:
            if VERBOSE:
                print('[view] colx=%r is a BUTTON' % colx)
            button_delegate = APIButtonDelegate(view)
            view.setItemDelegateForColumn(colx, button_delegate)
        else:
            if VERBOSE:
                print('[view] colx=%r does not have a delgate' % colx)


@register_view_method
def set_column_persistant_editor(view, column):
    """ Set each row in a column as persistant """
    num_rows = view.model.rowCount()
    print('view.set_persistant: %r rows' % num_rows)
    for row in range(num_rows):
        index  = view.model.index(row, column)
        view.view.openPersistentEditor(index)

Answer 1

item-delegate编辑器需要绘制自己的背景：

    editor.setAutoFillBackground(True)

显然，这必须在自定义委托类（APIThumbDelegate和/或APIButtonDelegate）中修复，这些类创建编辑器小部件（即通过其createEditor函数）。

QtGui.QTableView在正在编辑的单元格中显示背景数据（PyQt4）

1 个答案: