我已連接到「按鍵事件」以瀏覽Gtk.TreeView。我成功獲得標籤導航到右側(橫跨一行)。我在使用返回向下導航時遇到問題。當選中一個單元格時,我可以編輯它的內容,但我必須按返回一次提交該值並再次導航到下面的單元格。我希望行爲類似於標籤,其中我按返回一次,並且提交更改並且所選單元格向下移動一個。我喜歡電子表格的行爲。GTK/Python:如何讓按鍵事件編輯和導航TreeView單元格?
我猜有衝突這裏的鍵綁定,即,第一返回新聞發佈會上提交更改和第二返回新聞發佈會上向下導航。此外,我試圖連接Shift_L鍵(而不是返回)向下導航,並且在導航時按一下它也無法將更改提交到單元格。
如果需要的話,我會調出一個MWE,但我認爲這裏有人可能知道這個問題,並可能指向正確的方向或教育我。
編輯:好的,我花了一些時間,把所有東西都剝下來,以便能夠幫助任何人進行測試/眼科檢查。代碼的相關部分是名爲的onTreeNavigateKey按的回調函數。在那之內,麻煩的條件是elif keyname =='返回'。如果你在你的機器上運行它,你會看到你可以改變單元格值,並且標籤向右,而標籤都向右導航,並將改變的值提交給單元格。這樣做與返回鍵將提交更改,但您需要再次按返回向下導航。叫我迂腐,但我討厭那個。從代碼中可以看到,我嘗試直接使用新位置調用Gtk.TreeView.set_cursor方法,並從new thread using Glib.timeout_add調用它。
#!/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()
UPDATE:我把打印語句轉換成映入返回按鍵的回調函數,它看起來像我只捕獲每第二次按鍵。將值提交給單元的按鍵不會發出*按鍵事件*信號。該怎麼辦... – wrkyle