201f4a5e51
As of GTK 3.18.0 a fake button release event is no longer sent when a DnD completes: https://bugzilla.gnome.org/show_bug.cgi?id=749737 As a result we keep selection disabled which then means that the next drag from the clipboard fails to select the dragged object and we wind up trying to drop the old selection instead.
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('grab_broken_event', self.on_grab_broken)
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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_grab_broken(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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