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#!/usr/bin/env python
'''Drag and Drop
This is a test of the drag and drop capabilities of gtk. It is a
fairly straight forward port of the example distributed with gtk.
'''
import gtk
import gobject
from dndpixmap import drag_icon_xpm, trashcan_open_xpm, trashcan_closed_xpm
TARGET_STRING = 0
TARGET_ROOTWIN = 1
target = [
('STRING', 0, TARGET_STRING),
('text/plain', 0, TARGET_STRING),
('application/x-rootwin-drop', 0, TARGET_ROOTWIN)
]
def create_pixmap(widget, xpm_data):
return \
gtk.gdk.pixmap_colormap_create_from_xpm_d(
None, widget.get_colormap(), None, xpm_data)
class DragAndDropDemo(gtk.Window):
trashcan_open = None
trashcan_open_mask = None
trashcan_closed = None
trashcan_closed_mask = None
drag_icon = None
drag_mask = None
have_drag = False
popped_up = False
in_popup = False
popup_timer = 0
popdown_timer = 0
popup_win = None
def __init__(self, parent=None):
gtk.Window.__init__(self)
try:
self.set_screen(parent.get_screen())
except AttributeError:
self.connect('destroy', lambda *w: gtk.main_quit())
self.set_title(self.__class__.__name__)
table = gtk.Table(2,2)
self.add(table)
self.drag_icon, self.drag_mask = \
create_pixmap(self, drag_icon_xpm)
self.trashcan_open, self.trashcan_open_mask = \
create_pixmap(self, trashcan_open_xpm)
self.trashcan_closed, self.trashcan_closed_mask = \
create_pixmap(self, trashcan_closed_xpm)
label = gtk.Label('Drop to Trashcan!\n')
label.drag_dest_set(gtk.DEST_DEFAULT_ALL, target[:-1],
gtk.gdk.ACTION_COPY | gtk.gdk.ACTION_MOVE)
label.connect('drag_data_received', self.label_drag_data_received)
table.attach(label, 0, 1, 0, 1)
label = gtk.Label('Popup\n')
label.drag_dest_set(gtk.DEST_DEFAULT_ALL, target[:-1],
gtk.gdk.ACTION_COPY | gtk.gdk.ACTION_MOVE)
table.attach(label, 1, 2, 1, 2)
label.connect('drag_motion', self.popsite_motion)
label.connect('drag_leave', self.popsite_leave)
image = gtk.Image()
image.set_from_pixmap(self.trashcan_closed, self.trashcan_closed_mask)
image.drag_dest_set(0, [], 0)
table.attach(image, 1, 2, 0, 1)
image.connect('drag_leave', self.target_drag_leave)
image.connect('drag_motion', self.target_drag_motion)
image.connect('drag_drop', self.target_drag_drop)
image.connect('drag_data_received', self.target_drag_data_received)
b = gtk.Button('Drag from Here\n')
b.drag_source_set(gtk.gdk.BUTTON1_MASK | gtk.gdk.BUTTON3_MASK,
target, gtk.gdk.ACTION_COPY | gtk.gdk.ACTION_MOVE)
b.drag_source_set_icon(self.get_colormap(), self.drag_icon, self.drag_mask)
table.attach(b, 0, 1, 1, 2)
b.connect('drag_data_get', self.source_drag_data_get)
b.connect('drag_data_delete', self.source_drag_data_delete)
self.show_all()
def label_drag_data_received(self, w, context, x, y, data, info, time):
if data and data.format == 8:
print 'Received "%s" in label' % data.data
context.finish(True, False, time)
else:
context.finish(False, False, time)
def popsite_motion(self, w, context, x, y, time):
if not self.popup_timer:
self.popup_timer = gobject.timeout_add(500, self.popup_cb)
return True
def popsite_leave(self, w, context, time):
if self.popup_timer:
gobject.source_remove(self.popup_timer)
self.popup_timer = 0
def popup_motion(self, w, context, x, y, time):
print 'popup_motion'
if not self.in_popup:
self.in_popup = True
if self.popdown_timer:
print 'removed popdown'
gobject.source_remove(self.popdown_timer)
self.popdown_timer = 0
return True
def popup_leave(self, w, context, time):
print 'popup_leave'
if self.in_popup:
self.in_popup = False
if not self.popdown_timer:
print 'added popdown'
self.popdown_timer = gobject.timeout_add(500, self.popdown_cb)
def popup_cb(self):
if not self.popped_up:
if self.popup_win is None:
self.popup_win = gtk.Window(gtk.WINDOW_POPUP)
self.popup_win.set_position(gtk.WIN_POS_MOUSE)
table = gtk.Table(3, 3)
for k in range(9):
i, j = divmod(k, 3)
b = gtk.Button("%d,%d" % (i,j))
b.drag_dest_set(gtk.DEST_DEFAULT_ALL, target[:-1],
gtk.gdk.ACTION_COPY | gtk.gdk.ACTION_MOVE)
b.connect('drag_motion', self.popup_motion)
b.connect('drag_leave', self.popup_leave)
table.attach(b, i, i+1, j, j+1)
table.show_all()
self.popup_win.add(table)
self.popup_win.present()
self.popped_up = True
self.popdown_timer = gobject.timeout_add(500, self.popdown_cb)
print 'added popdown'
self.popup_timer = 0
return False
def popdown_cb(self):
print 'popdown'
#if self.in_popup:
# return True
self.popdown_timer = 0
self.popup_win.hide()
self.popped_up = False
return False
def target_drag_leave(self, img, context, time):
print 'leave'
self.have_drag = False
img.set_from_pixmap(self.trashcan_closed, self.trashcan_closed_mask)
def target_drag_motion(self, img, context, x, y, time):
if self.have_drag is False:
self.have_drag = True
img.set_from_pixmap(self.trashcan_open, self.trashcan_open_mask)
source_widget = context.get_source_widget()
print 'motion, source ',
if source_widget:
print source_widget.__class__.__name__
else:
print 'unknown'
context.drag_status(context.suggested_action, time)
return True
def target_drag_drop(self, img, context, x, y, time):
print 'drop'
self.have_drag = False
img.set_from_pixmap(self.trashcan_closed, self.trashcan_closed_mask)
if context.targets:
img.drag_get_data(context, context.targets[0], time)
return True
return False
def target_drag_data_received(self, img, context, x, y, data, info, time):
if data.format == 8:
print 'Received "%s" in trashcan' % data.data
context.finish(True, False, time)
else:
context.finish(False, False, time)
def source_drag_data_get(self, btn, context, selection_data, info, time):
if info == TARGET_ROOTWIN:
print 'I was dropped on the rootwin'
else:
selection_data.set(selection_data.target, 8, "I'm Data!")
def source_drag_data_delete(self, btn, context, data):
print 'Delete the data!'
def main():
DragAndDropDemo()
gtk.main()
if __name__ == '__main__':
main()
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