da018c1842
In 201f4a5e51 we made grab_broken
re-enable selection because GTK 3.18 and later no longer send a
fake button release event.
The sending of grab broken is an implementation detail of DnD
on X based systems however, and at least some GTK backends do
not generate this, wayland being one example.
So we now use drag-end instead which is always sent to the source
when a DnD operation completes.
90 lines
3.5 KiB
Python
90 lines
3.5 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2010 Doug Blank <doug.blank@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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"""
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An override to allow easy multiselections.
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"""
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from gi.repository import Gdk
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from gi.repository import Gtk
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#-------------------------------------------------------------------------
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#
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# MultiTreeView class
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#
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#-------------------------------------------------------------------------
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#TODO GTK3: Is this not duplicate of the class in clipboard py ?? We should reuse pieces
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class MultiTreeView(Gtk.TreeView):
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'''
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TreeView that captures mouse events to make drag and drop work properly
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'''
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def __init__(self):
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Gtk.TreeView.__init__(self)
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self.connect('button_press_event', self.on_button_press)
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self.connect('button_release_event', self.on_button_release)
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self.connect('drag-end', self.on_drag_end)
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self.connect('key_press_event', self.key_press_event)
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self.defer_select = False
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def key_press_event(self, widget, event):
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if event.type == Gdk.EventType.KEY_PRESS:
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if event.keyval == Gdk.KEY_Delete:
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model, paths = self.get_selection().get_selected_rows()
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# reverse, to delete from the end
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paths.sort(key=lambda x:-x[0])
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for path in paths:
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try:
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node = model.get_iter(path)
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except:
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node = None
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if node:
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model.remove(node)
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return True
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def on_button_press(self, widget, event):
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# Here we intercept mouse clicks on selected items so that we can
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# drag multiple items without the click selecting only one
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target = self.get_path_at_pos(int(event.x), int(event.y))
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if (target
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and event.type == Gdk.EventType.BUTTON_PRESS
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and not (event.get_state() & (Gdk.ModifierType.CONTROL_MASK|Gdk.ModifierType.SHIFT_MASK))
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and self.get_selection().path_is_selected(target[0])):
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# disable selection
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self.get_selection().set_select_function(lambda *ignore: False, None)
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self.defer_select = target[0]
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def on_button_release(self, widget, event):
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# re-enable selection
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self.get_selection().set_select_function(lambda *ignore: True, None)
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target = self.get_path_at_pos(int(event.x), int(event.y))
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if (self.defer_select and target
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and self.defer_select == target[0]
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and not (event.x==0 and event.y==0)): # certain drag and drop
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self.set_cursor(target[0], target[1], False)
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self.defer_select=False
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def on_drag_end(self, widget, event):
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# re-enable selection
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self.get_selection().set_select_function(lambda *ignore: True, None)
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self.defer_select=False
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