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# popupwindow.py: for when standard gtk tooltips just don't cut it
# Copyright (C) 2007-2020 Stephen Fairchild (s-fairchild@users.sourceforge.net)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program in the file entitled COPYING.
# If not, see <http://www.gnu.org/licenses/>.
__all__ = ['PopupWindow']
import gi
from gi.repository import GObject, Gtk
from .gtkstuff import timeout_add, source_remove
class PopupWindowCancelled(Exception):
pass
class PopupWindow:
def __init__(self, widget, popuptime, popdowntime, timeout, \
winpopulate_callback, inhibit_callback=lambda: False):
self.widget = widget
self.popuptime = popuptime
self.popdowntime = popdowntime
self.timeout = timeout
self.winpopulate_callback = winpopulate_callback
self.inhibit_callback = inhibit_callback
self.popup_window = None
self.inside_widget = False
self.widget.connect("motion_notify_event", self.handle_mouse, "move")
self.widget.connect("enter_notify_event", self.handle_mouse, "enter")
self.widget.connect("leave_notify_event", self.handle_mouse, "leave")
self.widget.connect("button_press_event", self.handle_mouse, "button")
self.widget.connect("button_release_event", self.handle_mouse, "button")
self.widget.connect("scroll_event", self.handle_mouse, "scroll")
def timeout_callback(self):
try:
self.timer_count += 1
self.total_timer_count += 1
if self.timer_count == self.popuptime:
if not self.timeout or self.total_timer_count < \
self.popuptime + self.timeout:
self.popup_window = Gtk.Window(type=Gtk.WindowType.POPUP)
self.popup_window.set_transient_for(self.widget.get_toplevel())
self.popup_window.set_modal(False)
self.popup_window.set_position(Gtk.WindowPosition.MOUSE)
self.popup_window.set_decorated(False)
if self.winpopulate_callback(self.popup_window, \
self.widget, self.x, self.y) != -1:
self.popup_window.realize()
"""
# Calculate the popup window positioning.
w_popup = self.popup_window.get_size()[0]
# Get root window width.
w_root = self.popup_window.get_screen(
).get_root_window().get_geometry()[2]
offset = w_root - int(self.x_root) - w_popup - 4
if offset > 0: # Right justify if needed.
offset = 0
x_pos = int(self.x_root) + 4 + offset
# No right justification for popups that won't fit.
if x_pos < 0:
# Display against left window edge.
x_pos = 0
self.popup_window.move(x_pos, int(self.y_root) + 4)
"""
self.popup_window.move(int(self.x_root) + 4,
int(self.y_root) + 4)
self.popup_window.show()
else:
raise PopupWindowCancelled("window populate callback returned"
" -1 -- window cancelled")
else:
raise PopupWindowCancelled("timeout exceeded")
if self.timer_count > self.popdowntime:
raise PopupWindowCancelled("popdown time reached")
except PopupWindowCancelled:
if self.popup_window is not None:
self.popup_window.destroy()
self.popup_window = None
return False
else:
return True
def handle_mouse(self, widget, event, data):
self.timer_count = 0
# Store absolute mouse x and y coordiates.
self.x_root = event.x_root
self.y_root = event.y_root
# This information could be useful too.
self.x = event.x
self.y = event.y
# Any event triggers destruction of popup windows currently open.
if self.popup_window is not None:
self.popup_window.destroy()
source_remove(self.timeout_id)
self.popup_window = None
if data == "leave": return False
if data == "enter" and self.inside_widget == False:
self.timeout_id = timeout_add(100, self.timeout_callback)
self.inside_widget = True
self.total_timer_count = 0
if data == "leave":
if self.inside_widget:
source_remove(self.timeout_id)
self.inside_widget = False
if data == "button" or data == "scroll" or self.inhibit_callback() \
and self.inside_widget:
source_remove(self.timeout_id)
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