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bin.py
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bin.py
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import os
import gst
import gtk
from gettext import gettext as _
import goocanvas
from receiver import receiver, handler
from element import ElementView
import selectable
ui = """
<ui>
<menubar name="MainMenuBar">
<placeholder name="BinMenus">
<menu action="Bin">
<menuitem action="AddFile" />
</menu>
</placeholder>
</menubar>
<toolbar name="MainToolBar">
<placeholder name="BinActions">
<toolitem action="AddFile" />
<toolitem action="Delete" />
</placeholder>
</toolbar>
</ui>
"""
TYPE_GST_ELEMENT = 0
TYPE_TEXT_PLAIN = 24
target = [
('GST_ELEMENT', 0, TYPE_GST_ELEMENT),
('text/plain', 0, TYPE_TEXT_PLAIN),
]
def isfile(path):
if path[:7] == "file://":
# either it's on local system and we know if it's a directory
return os.path.isfile(path[7:])
elif "://" in path:
# or it's not, in which case we assume it's a file
return True
# or it's on local system with "file://"
return os.path.isfile(path)
class BinView(goocanvas.Canvas):
widgets = None
selected = None
def __init__(self, pipeline, m):
goocanvas.Canvas.__init__(self)
self.props.automatic_bounds = True
self.pipeline = pipeline
self.widgets = {}
self.drag_dest_set(gtk.DEST_DEFAULT_ALL, target,
gtk.gdk.ACTION_COPY)
self.connect("drag_data_received", self.__dragDataReceived)
self.selection = selectable.Selection()
self.__setupActions(m)
def __setupActions(self, m):
actiongroup = gtk.ActionGroup("binview")
actiongroup.add_actions((
("AddFile", gtk.STOCK_ADD, _("Add Filesrc"), None, None,
self.addFileAction),
("Delete", gtk.STOCK_DELETE, None, None, None,
self.deleteSelectionAction),
("Bin", None, _("_Bin")),
))
m.insert_action_group(actiongroup)
m.add_ui_from_string(ui)
def __dragDataReceived(self, w, context, x, y, selection, targetType, time):
if targetType == TYPE_GST_ELEMENT:
elements = selection.data.split('\n')
for factory in elements:
element = gst.element_factory_make(factory)
self.addElement(element, x, y)
x += 10; y += 10
elif targetType == TYPE_TEXT_PLAIN:
incoming = [uri.strip() for uri in selection.data.split('\n')]
for uri in incoming:
if isfile(uri):
self.addFile(uri, *self.convert_from_pixels(x, y))
x += 10; y += 10
def addFileAction(self, action):
def respondCb(dialog, response):
if response == gtk.RESPONSE_OK:
x, y = 100, 100
for file in dialog.get_uris():
self.addFile(file, x, y)
x += 10; y += 10
dialog.destroy()
chooser = gtk.FileChooserDialog(_("Add Filesrc to Pipeline"),
None,
gtk.FILE_CHOOSER_ACTION_OPEN,
(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE, gtk.STOCK_ADD,
gtk.RESPONSE_OK))
chooser.set_default_response(gtk.RESPONSE_OK)
chooser.set_select_multiple(True)
chooser.set_modal(False)
# TODO: remember last folder and set path to that
chooser.set_current_folder(os.path.expanduser("~"))
chooser.connect('response', respondCb)
chooser.show()
def addFile(self, uri, x=100, y=100):
element = gst.element_factory_make("filesrc",
os.path.basename(uri))
element.props.location = gst.uri_get_location(uri)
self.addElement(element, x, y)
def addElement(self, element, x, y):
element.set_data("pos", (x, y))
self.pipeline.add(element)
def deleteSelectionAction(self, action):
self.selection.delete()
pipeline = receiver()
@handler(pipeline, "element-added")
def element_added(self, pipeline, element):
v = ElementView(element, self.selection)
self.widgets[element] = v
x, y = element.get_data("pos")
v.set_simple_transform(x, y, 1.0, 0)
self.get_root_item().add_child(v)
@handler(pipeline, "element-removed")
def element_removed(self, pipeline, element):
if element in self.widgets:
widget = self.widgets[element]
del self.widgets[element]
widget.remove()
widget.removeFromSelection()