GTK/Python：如何让keypressevent编辑和导航TreeView单元格？

#!/usr/bin/env python3` from gi.repository import Gtk, Gdk, GLib class linFitApp(Gtk.Window): def __init__(self): Gtk.Window.__init__(self, title='Testing Keypress Events on Treeview') self.set_position(Gtk.WindowPosition.CENTER) self.set_default_size(400, 300) self.set_border_width(5) self.mainBox = Gtk.Box() self.scrollTableWindow = Gtk.ScrolledWindow() self.scrollTableWindow.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC) self.mainBox.pack_start(self.scrollTableWindow, False, False, 0) self.add(self.mainBox) ############################################################################ #Now to set up the data table self.dataTableListStore = Gtk.ListStore(float, float, float, float) self.dataTableTreeView = Gtk.TreeView(model=self.dataTableListStore) self.dataTableTreeView.props.activate_on_single_click = True self.dataTableTreeView.connect("key-press-event", self.onTreeNavigateKeyPress) #set up the x column self.xColumnTextRenderer = Gtk.CellRendererText() self.xColumnTextRenderer.set_property("editable", True) self.xColumnTextRenderer.connect("edited", self.onXChanged) self.xColumnTreeView = Gtk.TreeViewColumn("x", self.xColumnTextRenderer, text=0) #set up the y column self.yColumnTextRenderer = Gtk.CellRendererText() self.yColumnTextRenderer.set_property("editable", True) self.yColumnTextRenderer.connect("edited",self.onYChanged) self.yColumnTreeView = Gtk.TreeViewColumn("y", self.yColumnTextRenderer, text=1) #set up the dx column self.dxColumnTextRenderer = Gtk.CellRendererText() self.dxColumnTextRenderer.set_property("editable", True) self.dxColumnTextRenderer.connect("edited",self.onDxChanged) self.dxColumnTreeView = Gtk.TreeViewColumn("dx", self.dxColumnTextRenderer, text=2) #set up the dy column self.dyColumnTextRenderer = Gtk.CellRendererText() self.dyColumnTextRenderer.set_property("editable", True) self.dyColumnTextRenderer.connect("edited",self.onDyChanged) self.dyColumnTreeView = Gtk.TreeViewColumn("dy", self.dyColumnTextRenderer, text=3) #pack treeview into the scrolled window self.scrollTableWindow.add(self.dataTableTreeView) #add treeview columns to treeview self.dataTableTreeView.append_column(self.xColumnTreeView) self.dataTableTreeView.append_column(self.yColumnTreeView) self.dataTableTreeView.append_column(self.dxColumnTreeView) self.dataTableTreeView.append_column(self.dyColumnTreeView) #fill in treeview with some sample data self.dataTableListStore.append([0, 4, 0, 0]) self.dataTableListStore.append([5, 8.2, 0, 0]) self.dataTableListStore.append([10, 11.7, 0, 0]) self.dataTableListStore.append([15, 16.5, 0, 0]) self.dataTableListStore.append([20, 19, 0, 0]) self.dataTableListStore.append([25, 24.5, 0, 0]) self.dataTableListStore.append([30, 26.2, 0, 0]) #define the callbacks for cell editing def onXChanged(self, widget, path, number): self.dataTableListStore[path][0]=float(number.replace(',', '.')) def onYChanged(self, widget, path, number): self.dataTableListStore[path][1]=float(number.replace(',', '.')) def onDxChanged(self, widget, path, number): self.dataTableListStore[path][2]=float(number.replace(',', '.')) def onDyChanged(self, widget, path, number): self.dataTableListStore[path][3]=float(number.replace(',', '.')) #define the callback for keypress events def onTreeNavigateKeyPress(self, treeview, event): keyname = Gdk.keyval_name(event.keyval) path, col = treeview.get_cursor() columns = [c for c in treeview.get_columns()] colnum = columns.index(col) if keyname == 'Tab': if colnum + 1 < len(columns): next_column = columns[colnum + 1] else: next_column = columns[0] GLib.timeout_add(50, treeview.set_cursor, path, next_column, True) elif keyname == 'Return': model = treeview.get_model() #Check if currently in last row of Treeview if path.get_indices()[0] + 1 == len(model): path = treeview.get_path_at_pos(0,0)[0] #treeview.set_cursor(path, columns[colnum], True) GLib.timeout_add(50, treeview.set_cursor, path, columns[colnum], True) else: path.next() #treeview.set_cursor(path, columns[colnum], True) GLib.timeout_add(50, treeview.set_cursor, path, columns[colnum], True) else: pass #create main application window and start Gtk loop mainWindow = linFitApp() mainWindow.connect("delete-event", Gtk.main_quit) mainWindow.show_all() Gtk.main()

1条回答

网友
1楼 · 发布于 2024-06-26 01:53:05

答案（也许只是一个功能性的破解）如下：
按下回车键，同时Gtk树景单元格处于编辑模式时不释放按键事件信号。我没有将回调函数连接到按键事件信号，而是将其连接到按键释放事件信号，该信号在编辑单元格时按下Return键后发出。因此，按回车键将激活它所发出的任何一个信号以提交一个新值（我仍然不知道是哪个信号），释放Return键将激活到下一个单元格的导航。喂，按一下回车键，我们就得到了两个想要的动作。在
简短回答：
改变这个
self.dataTableTreeView.connect("key-press-event", self.onTreeNavigateKeyPress)
为了这个
^{pr2}$

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