In the attached program, I get the default icon when I use enable_model_drag_source to enable the drag (set MANUAL to False). When I use drag_begin (set MANUAL to True), the icon is wrong. I need to use drag_begin so that I can disallow the drag under certain conditions. Thoughts? -- Jeffrey Barish
# When I start the drag manually (using drag_begin), I do not get the default # icon.
import gtk MANUAL = True numbers = ('zero', 'one', 'two', 'three', 'four', 'five', 'six') data = [(str(i), d) for i, d in enumerate(numbers)] class TreeViewDnDTest: def __init__(self): self.drag_context = None self.window = gtk.Window(gtk.WINDOW_TOPLEVEL) self.window.set_title("DND Test") self.window.set_size_request(200, 300) self.window.connect('delete-event', self.on_delete_event) self.liststore = gtk.ListStore(str, str) for item in data: self.liststore.append(item) self.treeview = gtk.TreeView(self.liststore) self.treeview.connect('drag-data-received', self.on_drag_data_received) if MANUAL: self.treeview.connect_after('drag-begin', self.on_drag_begin) self.treeview.connect('button-press-event', self.on_treeview_button_press_event) self.treeview.connect('motion-notify-event', self.on_treeview_motion_notify_event) renderer = gtk.CellRendererText() column = gtk.TreeViewColumn('Int', renderer, text=0) self.treeview.append_column(column) column = gtk.TreeViewColumn('Str', renderer, text=1) self.treeview.append_column(column) if not MANUAL: self.treeview.enable_model_drag_source(gtk.gdk.BUTTON1_MASK, [('tree_model_row', gtk.TARGET_SAME_WIDGET, 1)], gtk.gdk.ACTION_MOVE) self.treeview.enable_model_drag_dest( [('tree_model_row', 0, 1), ('tree_model_row_from_button', 0, 0)], gtk.gdk.ACTION_DEFAULT) self.vbox = gtk.VBox() self.vbox.pack_start(self.treeview, True) self.window.add(self.vbox) self.window.show_all() def on_delete_event(self, widget, event, data=None): gtk.main_quit() return False def on_drag_begin(self, widget, drag_context): # This call does not affect the icon: drag_context.set_icon_default() def on_drag_data_received(self, treeview, context, x, y, selection, info, etime): source_widget = context.get_source_widget() if source_widget == treeview: model, source_iter = treeview.get_selection().get_selected() source_row = model[source_iter] drop_info = treeview.get_dest_row_at_pos(x, y) if drop_info: path, position = drop_info iter = model.get_iter(path) if (position == gtk.TREE_VIEW_DROP_BEFORE or position == gtk.TREE_VIEW_DROP_INTO_OR_BEFORE): model.insert_before(iter, source_row) else: model.insert_after(iter, source_row) else: model.append(source_row) if source_iter: model.remove(source_iter) self.drag_context = None if MANUAL: def on_treeview_button_press_event(self, treeview, event): if event.button == 1: self.press_start_x = int(event.x) self.press_start_y = int(event.y) self.press_start_event = event def on_treeview_motion_notify_event(self, treeview, event): if event.state == gtk.gdk.BUTTON1_MASK: row = self.treeview.get_dest_row_at_pos(int(event.x), int(event.y)) if row: treepath, drop_pos = row threshold = treeview.drag_check_threshold( self.press_start_x, self.press_start_y, int(event.x), int(event.y)) if self.drag_context is None and threshold: targets = [('tree_model_row', gtk.TARGET_SAME_WIDGET, 1)] actions = gtk.gdk.ACTION_MOVE button = 1 self.drag_context = treeview.drag_begin(targets, actions, button, self.press_start_event) # This call does not affect the icon: self.drag_context.set_icon_default() if __name__ == '__main__': treeviewdnd = TreeViewDnDTest() gtk.main()
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