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drag_drop.py
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from gi.repository import Gtk, Gdk, GdkPixbuf, GObject
(TARGET_ENTRY_TEXT, TARGET_ENTRY_PIXBUF) = range(2)
(COLUMN_TEXT, COLUMN_PIXBUF) = range(2)
DRAG_ACTION = Gdk.DragAction.COPY
class DragDropWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="Drag and Drop Demo")
vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=6)
self.add(vbox)
hbox = Gtk.Box(spacing=12)
vbox.pack_start(hbox, True, True, 0)
self.iconview = DragSourceIconView()
self.drop_area = DropArea()
hbox.pack_start(self.iconview, True, True, 0)
hbox.pack_start(self.drop_area, True, True, 0)
button_box = Gtk.Box(spacing=6)
vbox.pack_start(button_box, True, False, 0)
image_button = Gtk.RadioButton.new_with_label_from_widget(None,
"Images")
image_button.connect("toggled", self.add_image_targets)
button_box.pack_start(image_button, True, False, 0)
text_button = Gtk.RadioButton.new_with_label_from_widget(image_button,
"Text")
text_button.connect("toggled", self.add_text_targets)
button_box.pack_start(text_button, True, False, 0)
self.add_image_targets()
def add_image_targets(self, button=None):
targets = Gtk.TargetList.new([])
targets.add_image_targets(TARGET_ENTRY_PIXBUF, True)
self.drop_area.drag_dest_set_target_list(targets)
self.iconview.drag_source_set_target_list(targets)
def add_text_targets(self, button=None):
self.drop_area.drag_dest_set_target_list(None)
self.iconview.drag_source_set_target_list(None)
self.drop_area.drag_dest_add_text_targets()
self.iconview.drag_source_add_text_targets()
class DragSourceIconView(Gtk.IconView):
def __init__(self):
Gtk.IconView.__init__(self)
self.set_text_column(COLUMN_TEXT)
self.set_pixbuf_column(COLUMN_PIXBUF)
model = Gtk.ListStore(str, GdkPixbuf.Pixbuf)
self.set_model(model)
self.add_item("Item 1", "folder")
self.add_item("Item 2", "help-about")
self.add_item("Item 3", "edit-copy")
self.enable_model_drag_source(Gdk.ModifierType.BUTTON1_MASK, [],
DRAG_ACTION)
self.connect("drag-data-get", self.on_drag_data_get)
def on_drag_data_get(self, widget, drag_context, data, info, time):
selected_path = self.get_selected_items()[0]
selected_iter = self.get_model().get_iter(selected_path)
if info == TARGET_ENTRY_TEXT:
text = self.get_model().get_value(selected_iter, COLUMN_TEXT)
data.set_text(text, -1)
elif info == TARGET_ENTRY_PIXBUF:
pixbuf = self.get_model().get_value(selected_iter, COLUMN_PIXBUF)
data.set_pixbuf(pixbuf)
def add_item(self, text, icon_name):
pixbuf = Gtk.IconTheme.get_default().load_icon(icon_name, 16, 0)
self.get_model().append([text, pixbuf])
class DropArea(Gtk.Label):
def __init__(self):
Gtk.Label.__init__(self, "Drop something on me!")
self.drag_dest_set(Gtk.DestDefaults.ALL, [], DRAG_ACTION)
self.connect("drag-data-received", self.on_drag_data_received)
def on_drag_data_received(self, widget, drag_context, x,y, data,info, time):
if info == TARGET_ENTRY_TEXT:
text = data.get_text()
print("Received text: %s" % text)
elif info == TARGET_ENTRY_PIXBUF:
pixbuf = data.get_pixbuf()
width = pixbuf.get_width()
height = pixbuf.get_height()
print("Received pixbuf with width %spx and height %spx" % (width,
height))
win = DragDropWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()