The "Ctrl+C" and "Ctrl+V" shortcuts (as well as the "right click menu") are available by default in any GTK application, for example a simple hello world app with only a SourceView (see below). But if I add a menu item "Edit->Copy" and assign the "Ctrl+C" accelerator to it and a corresponding callback function, than it obviously stops working since I am intercepting the signal with my own method. So, how can I trigger the default cut/copy/paste/select_all functionalities inside my custom method?
Note: returning False works for the Paste function but not for Copy/Cut/Select All
Simple example - In this case all functions (cut/copy/paste/select all) work fine.
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('GtkSource', '3.0')
from gi.repository import Gtk, Gdk, Pango, GObject, GtkSource
class MyOwnApp(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Hello World")
self.set_default_size(500, 500)
self.vbox = Gtk.VBox()
editor = GtkSource.View.new()
editor.set_show_line_numbers(True)
editor.set_auto_indent(True)
editor_buffer = editor.get_buffer()
self.vbox.pack_start(editor, False, False, 0)
self.add(self.vbox)
win = MyOwnApp()
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()
If I add a menu item with a callback they don't work anymore.
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('GtkSource', '3.0')
from gi.repository import Gtk, Gdk, Pango, GObject, GtkSource
class MyOwnApp(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Hello World")
self.set_default_size(900, 900)
box_outer = Gtk.VBox()
# MENUBAR setup
menuBar = Gtk.MenuBar()
# Set accelerators
agr = Gtk.AccelGroup()
self.add_accel_group(agr)
# File menu
file_menu_dropdown = Gtk.MenuItem("File")
menuBar.append(file_menu_dropdown)
file_menu = Gtk.Menu()
file_menu_dropdown.set_submenu(file_menu)
# File menu Items
file_exit = Gtk.MenuItem("Exit")
key, mod = Gtk.accelerator_parse("<Control>Q")
file_exit.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
file_exit.connect("activate", self.quit)
file_menu.append(file_exit)
# Edit menu
edit_menu_dropdown = Gtk.MenuItem("Edit")
menuBar.append(edit_menu_dropdown)
edit_menu = Gtk.Menu()
edit_menu_dropdown.set_submenu(edit_menu)
# Edit menu Items
edit_cut = Gtk.MenuItem("Cut")
key, mod = Gtk.accelerator_parse("<Control>X")
edit_cut.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_cut.connect("activate", self.on_toolbutton_cut_clicked)
edit_copy = Gtk.MenuItem("Copy")
key, mod = Gtk.accelerator_parse("<Control>C")
edit_copy.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_copy.connect("activate", self.on_toolbutton_copy_clicked)
edit_paste = Gtk.MenuItem("Paste")
key, mod = Gtk.accelerator_parse("<Control>V")
edit_paste.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_paste.connect("activate", self.on_toolbutton_paste_clicked)
edit_select_all = Gtk.MenuItem("Select All")
key, mod = Gtk.accelerator_parse("<Control>A")
edit_select_all.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_select_all.connect("activate", self.on_toolbutton_select_all_clicked)
edit_menu.append(edit_select_all)
edit_menu.append(edit_cut)
edit_menu.append(edit_copy)
edit_menu.append(edit_paste)
box_outer.pack_start(menuBar, False, False, 0)
# SourceView
editor = GtkSource.View.new()
editor.set_show_line_numbers(True)
editor.set_auto_indent(True)
editor_buffer = editor.get_buffer()
box_outer.pack_start(editor, True, True, 0)
self.add(box_outer)
def quit(self,widget=None):
Gtk.main_quit()
def on_toolbutton_select_all_clicked(self, widget):
return False
def on_toolbutton_cut_clicked(self, widget):
return False
def on_toolbutton_copy_clicked(self, widget):
return False
def on_toolbutton_paste_clicked(self, widget):
return False
win = MyOwnApp()
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()
After too many hours of research, I'm happy to post this solution for all the GTK enthusiast out there!!
Thanks to @SivaGuru for contributing!!
With this solution, you can use the cut/copy/paste/selectAll functions across multiple widgets inside a window (with both Gtk.Entry and GtkSource.View).
The key point is that these two widgets use different methods for the cut/copy/paste/selectAll functionalities, but (as expected) they both have default methods to manage these basic functionalities. No need to reinvent the wheel.
Note: The Gtk.Entry widget inherits from the Gtk.Editable interface, which has all the necessary functions to fallback to the default handling of cut/copy/past/selectAll.
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('GtkSource', '3.0')
from gi.repository import Gtk, Gdk, GtkSource
class MyWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Hello World")
self.set_default_size(900, 900)
box_outer = Gtk.VBox()
# MENUBAR setup
menuBar = Gtk.MenuBar()
# Set accelerators
agr = Gtk.AccelGroup()
self.add_accel_group(agr)
# File menu
file_menu_dropdown = Gtk.MenuItem("File")
menuBar.append(file_menu_dropdown)
file_menu = Gtk.Menu()
file_menu_dropdown.set_submenu(file_menu)
#File menu Items
file_exit = Gtk.MenuItem("Exit")
key, mod = Gtk.accelerator_parse("<Control>Q")
file_exit.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
file_exit.connect("activate", self.quit)
file_menu.append(file_exit)
# Edit menu
edit_menu_dropdown = Gtk.MenuItem("Edit")
menuBar.append(edit_menu_dropdown)
edit_menu = Gtk.Menu()
edit_menu_dropdown.set_submenu(edit_menu)
# Edit menu Items
edit_cut = Gtk.MenuItem("Cut")
key, mod = Gtk.accelerator_parse("<Control>X")
edit_cut.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_cut.connect("activate", self.on_toolbutton_cut_clicked)
edit_copy = Gtk.MenuItem("Copy")
key, mod = Gtk.accelerator_parse("<Control>C")
edit_copy.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_copy.connect("activate", self.on_toolbutton_copy_clicked)
edit_paste = Gtk.MenuItem("Paste")
key, mod = Gtk.accelerator_parse("<Control>V")
edit_paste.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_paste.connect("activate", self.on_toolbutton_paste_clicked)
edit_select_all = Gtk.MenuItem("Select All")
key, mod = Gtk.accelerator_parse("<Control>A")
edit_select_all.add_accelerator("activate", agr, key, mod, Gtk.AccelFlags.VISIBLE)
edit_select_all.connect("activate", self.on_toolbutton_select_all_clicked)
edit_menu.append(edit_select_all)
edit_menu.append(edit_cut)
edit_menu.append(edit_copy)
edit_menu.append(edit_paste)
box_outer.pack_start(menuBar, False, False, 0)
entry = Gtk.Entry()
box_outer.pack_start(entry, False, False, 0)
editor = GtkSource.View.new()
editor.set_show_line_numbers(True)
editor.set_auto_indent(True)
box_outer.pack_start(editor, True, True, 0)
self.clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
self.add(box_outer)
def quit(self,widget=None):
Gtk.main_quit()
def on_toolbutton_select_all_clicked(self, widget):
focusedWidget = self.get_focus()
if focusedWidget is not None:
if focusedWidget.has_focus():
if str(type(focusedWidget)) == "<class 'gi.repository.Gtk.Entry'>":
focusedWidget.select_region(0, -1)
elif str(type(focusedWidget)) == "<class 'gi.repository.GtkSource.View'>":
editor_buffer = focusedWidget.get_buffer()
editor_buffer.select_range(editor_buffer.get_start_iter(), editor_buffer.get_end_iter())
else:
pass
def on_toolbutton_cut_clicked(self, widget):
focusedWidget = self.get_focus()
if focusedWidget is not None:
if focusedWidget.has_focus():
if str(type(focusedWidget)) == "<class 'gi.repository.Gtk.Entry'>":
focusedWidget.cut_clipboard()
elif str(type(focusedWidget)) == "<class 'gi.repository.GtkSource.View'>":
editor_buffer = focusedWidget.get_buffer()
editor_buffer.cut_clipboard(self.clipboard, editor_buffer)
else:
pass
def on_toolbutton_copy_clicked(self, widget):
focusedWidget = self.get_focus()
if focusedWidget is not None:
if focusedWidget.has_focus():
if str(type(focusedWidget)) == "<class 'gi.repository.Gtk.Entry'>":
focusedWidget.copy_clipboard()
elif str(type(focusedWidget)) == "<class 'gi.repository.GtkSource.View'>":
editor_buffer = focusedWidget.get_buffer()
editor_buffer.copy_clipboard(self.clipboard)
else:
pass
def on_toolbutton_paste_clicked(self, widget):
focusedWidget = self.get_focus()
if focusedWidget is not None:
if focusedWidget.has_focus():
if str(type(focusedWidget)) == "<class 'gi.repository.Gtk.Entry'>":
focusedWidget.paste_clipboard()
elif str(type(focusedWidget)) == "<class 'gi.repository.GtkSource.View'>":
editor_buffer = focusedWidget.get_buffer()
editor_buffer.paste_clipboard(self.clipboard, None, editor_buffer)
else:
pass
win = MyWindow()
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()