def load_pyqt4():
global QT_MODULE_NAME, is_pyqt46, __version_info__
logging.getLogger(__name__).debug('trying PyQt4')
import PyQt4
os.environ[QT_API] = PYQT4_API[0]
setup_apiv2()
logging.getLogger(__name__).debug('imported PyQt4')
__version_info__ = tuple(__version__.split('.') + ['final', 1])
is_pyqt46 = __version__.startswith('4.6')
QT_MODULE_NAME = 'PyQt4'
print PyQt_license_warning
pass
from PyQt4.QtCore import PYQT_VERSION_STR as __version__ # analysis:ignore
except ImportError:
# Trying PyQt5 before switching to PySide (at this point, PyQt4 may
# not be installed but PyQt5 or Pyside could still be if the QT_API
# environment variable hasn't been set-up)
try:
import PyQt5 # analysis:ignore
API = os.environ['QT_API'] = 'pyqt5'
API_NAME = 'PyQt5'
except ImportError:
API = os.environ['QT_API'] = 'pyside'
API_NAME = 'PySide'
else:
is_old_pyqt = __version__.startswith(('4.4', '4.5', '4.6', '4.7'))
is_pyqt46 = __version__.startswith('4.6')
import sip
try:
API_NAME += (" (API v%d)" % sip.getapi('QString'))
except AttributeError:
pass
from PyQt4 import uic # analysis:ignore
PYQT5 = False
if API == 'pyqt5':
try:
from PyQt5.QtCore import PYQT_VERSION_STR as __version__
from PyQt5 import uic # analysis:ignore
PYQT5 = True
is_old_pyqt = is_pyqt46 = False
# import sip
# try:
# sip.setapi('QString', 2)
# sip.setapi('QVariant', 2)
# except AttributeError:
# # PyQt < v4.6: in future version, we should warn the user
# # that PyQt is outdated and won't be supported by Spyder >v2.1
# pass
try:
from PyQt4.QtCore import PYQT_VERSION_STR as __version__
except ImportError:
# Switching to PySide
API = os.environ['QT_API'] = 'pyside'
API_NAME = 'PySide'
else:
__version_info__ = tuple(__version__.split('.')+['final', 1])
is_old_pyqt = __version__.startswith(('4.4', '4.5', '4.6', '4.7'))
is_pyqt46 = __version__.startswith('4.6')
import sip
try:
API_NAME += (" (API v%d)" % sip.getapi('QString'))
except AttributeError:
pass
if API == 'pyside':
try:
from PySide import __version__ # analysis:ignore
except ImportError:
raise ImportError("Spyder requires PySide or PyQt to be installed")
else:
is_old_pyqt = is_pyqt46 = False
class CanvasScene(QGraphicsScene):
"""
A Graphics Scene for displaying an :class:`~.scheme.Scheme` instance.
"""
#: Signal emitted when a :class:`NodeItem` has been added to the scene.
node_item_added = Signal(items.NodeItem)
#: Signal emitted when a :class:`NodeItem` has been removed from the
#: scene.
node_item_removed = Signal(items.LinkItem)
#: Signal emitted when a new :class:`LinkItem` has been added to the
#: scene.
link_item_added = Signal(items.LinkItem)
#: Signal emitted when a :class:`LinkItem` has been removed.
link_item_removed = Signal(items.LinkItem)
#: Signal emitted when a :class:`Annotation` item has been added.
annotation_added = Signal(items.annotationitem.Annotation)
#: Signal emitted when a :class:`Annotation` item has been removed.
annotation_removed = Signal(items.annotationitem.Annotation)
#: Signal emitted when the position of a :class:`NodeItem` has changed.
node_item_position_changed = Signal(items.NodeItem, QPointF)
#: Signal emitted when an :class:`NodeItem` has been double clicked.
node_item_double_clicked = Signal(items.NodeItem)
#: An node item has been activated (clicked)
node_item_activated = Signal(items.NodeItem)
#: An node item has been hovered
node_item_hovered = Signal(items.NodeItem)
#: Link item has been hovered
link_item_hovered = Signal(items.LinkItem)
def __init__(self, *args, **kwargs):
QGraphicsScene.__init__(self, *args, **kwargs)
self.scheme = None
self.registry = None
# All node items
self.__node_items = []
# Mapping from SchemeNodes to canvas items
self.__item_for_node = {}
# All link items
self.__link_items = []
# Mapping from SchemeLinks to canvas items.
self.__item_for_link = {}
# All annotation items
self.__annotation_items = []
# Mapping from SchemeAnnotations to canvas items.
self.__item_for_annotation = {}
# Is the scene editable
self.editable = True
# Anchor Layout
self.__anchor_layout = AnchorLayout()
self.addItem(self.__anchor_layout)
self.__channel_names_visible = True
self.__node_animation_enabled = True
self.user_interaction_handler = None
self.activated_mapper = NodeItemSignalMapper(self)
self.activated_mapper.pyMapped.connect(
self.node_item_activated
)
self.hovered_mapper = NodeItemSignalMapper(self)
self.hovered_mapper.pyMapped.connect(
self.node_item_hovered
)
self.position_change_mapper = NodeItemSignalMapper(self)
self.position_change_mapper.pyMapped.connect(
self._on_position_change
)
log.info("'%s' intitialized." % self)
def clear_scene(self):
"""
Clear (reset) the scene.
"""
if self.scheme is not None:
self.scheme.node_added.disconnect(self.add_node)
self.scheme.node_removed.disconnect(self.remove_node)
self.scheme.link_added.disconnect(self.add_link)
self.scheme.link_removed.disconnect(self.remove_link)
self.scheme.annotation_added.disconnect(self.add_annotation)
self.scheme.annotation_removed.disconnect(self.remove_annotation)
self.scheme.node_state_changed.disconnect(
self.on_widget_state_change
)
self.scheme.channel_state_changed.disconnect(
self.on_link_state_change
)
# Remove all items to make sure all signals from scheme items
# to canvas items are disconnected.
for annot in self.scheme.annotations:
if annot in self.__item_for_annotation:
self.remove_annotation(annot)
for link in self.scheme.links:
if link in self.__item_for_link:
self.remove_link(link)
for node in self.scheme.nodes:
if node in self.__item_for_node:
self.remove_node(node)
self.scheme = None
self.__node_items = []
self.__item_for_node = {}
self.__link_items = []
self.__item_for_link = {}
self.__annotation_items = []
self.__item_for_annotation = {}
self.__anchor_layout.deleteLater()
self.user_interaction_handler = None
self.clear()
log.info("'%s' cleared." % self)
def set_scheme(self, scheme):
"""
Set the scheme to display. Populates the scene with nodes and links
already in the scheme. Any further change to the scheme will be
reflected in the scene.
Parameters
----------
scheme : :class:`~.scheme.Scheme`
"""
if self.scheme is not None:
# Clear the old scheme
self.clear_scene()
log.info("Setting scheme '%s' on '%s'" % (scheme, self))
self.scheme = scheme
if self.scheme is not None:
self.scheme.node_added.connect(self.add_node)
self.scheme.node_removed.connect(self.remove_node)
self.scheme.link_added.connect(self.add_link)
self.scheme.link_removed.connect(self.remove_link)
self.scheme.annotation_added.connect(self.add_annotation)
self.scheme.annotation_removed.connect(self.remove_annotation)
self.scheme.node_state_changed.connect(
self.on_widget_state_change
)
self.scheme.channel_state_changed.connect(
self.on_link_state_change
)
self.scheme.topology_changed.connect(self.on_scheme_change)
for node in scheme.nodes:
self.add_node(node)
for link in scheme.links:
self.add_link(link)
for annot in scheme.annotations:
self.add_annotation(annot)
def set_registry(self, registry):
"""
Set the widget registry.
"""
# TODO: Remove/Deprecate. Is used only to get the category/background
# color. That should be part of the SchemeNode/WidgetDescription.
log.info("Setting registry '%s on '%s'." % (registry, self))
self.registry = registry
def set_anchor_layout(self, layout):
"""
Set an :class:`~.layout.AnchorLayout`
"""
if self.__anchor_layout != layout:
if self.__anchor_layout:
self.__anchor_layout.deleteLater()
self.__anchor_layout = None
self.__anchor_layout = layout
def anchor_layout(self):
"""
Return the anchor layout instance.
"""
return self.__anchor_layout
def set_channel_names_visible(self, visible):
"""
Set the channel names visibility.
"""
self.__channel_names_visible = visible
for link in self.__link_items:
link.setChannelNamesVisible(visible)
def channel_names_visible(self):
"""
Return the channel names visibility state.
"""
return self.__channel_names_visible
def set_node_animation_enabled(self, enabled):
"""
Set node animation enabled state.
"""
if self.__node_animation_enabled != enabled:
self.__node_animation_enabled = enabled
for node in self.__node_items:
node.setAnimationEnabled(enabled)
def add_node_item(self, item):
"""
Add a :class:`.NodeItem` instance to the scene.
"""
if item in self.__node_items:
raise ValueError("%r is already in the scene." % item)
if item.pos().isNull():
if self.__node_items:
pos = self.__node_items[-1].pos() + QPointF(150, 0)
else:
pos = QPointF(150, 150)
item.setPos(pos)
item.setFont(self.font())
# Set signal mappings
self.activated_mapper.setPyMapping(item, item)
item.activated.connect(self.activated_mapper.pyMap)
self.hovered_mapper.setPyMapping(item, item)
item.hovered.connect(self.hovered_mapper.pyMap)
self.position_change_mapper.setPyMapping(item, item)
item.positionChanged.connect(self.position_change_mapper.pyMap)
self.addItem(item)
self.__node_items.append(item)
self.node_item_added.emit(item)
log.info("Added item '%s' to '%s'" % (item, self))
return item
def add_node(self, node):
"""
Add and return a default constructed :class:`.NodeItem` for a
:class:`SchemeNode` instance `node`. If the `node` is already in
the scene do nothing and just return its item.
"""
if node in self.__item_for_node:
# Already added
return self.__item_for_node[node]
item = self.new_node_item(node.description)
if node.position:
pos = QPointF(*node.position)
item.setPos(pos)
item.setTitle(node.title)
item.setProcessingState(node.processing_state)
item.setProgress(node.progress)
for message in node.state_messages():
item.setStateMessage(message)
item.setStatusMessage(node.status_message())
self.__item_for_node[node] = item
node.position_changed.connect(self.__on_node_pos_changed)
node.title_changed.connect(item.setTitle)
node.progress_changed.connect(item.setProgress)
node.processing_state_changed.connect(item.setProcessingState)
node.state_message_changed.connect(item.setStateMessage)
node.status_message_changed.connect(item.setStatusMessage)
return self.add_node_item(item)
def new_node_item(self, widget_desc, category_desc=None):
"""
Construct an new :class:`.NodeItem` from a `WidgetDescription`.
Optionally also set `CategoryDescription`.
"""
item = items.NodeItem()
item.setWidgetDescription(widget_desc)
if category_desc is None and self.registry and widget_desc.category:
category_desc = self.registry.category(widget_desc.category)
if category_desc is None and self.registry is not None:
try:
category_desc = self.registry.category(widget_desc.category)
except KeyError:
pass
if category_desc is not None:
item.setWidgetCategory(category_desc)
item.setAnimationEnabled(self.__node_animation_enabled)
return item
def remove_node_item(self, item):
"""
Remove `item` (:class:`.NodeItem`) from the scene.
"""
self.activated_mapper.removePyMappings(item)
self.hovered_mapper.removePyMappings(item)
item.hide()
self.removeItem(item)
self.__node_items.remove(item)
self.node_item_removed.emit(item)
log.info("Removed item '%s' from '%s'" % (item, self))
def remove_node(self, node):
"""
Remove the :class:`.NodeItem` instance that was previously
constructed for a :class:`SchemeNode` `node` using the `add_node`
method.
"""
item = self.__item_for_node.pop(node)
node.position_changed.disconnect(self.__on_node_pos_changed)
node.title_changed.disconnect(item.setTitle)
node.progress_changed.disconnect(item.setProgress)
node.processing_state_changed.disconnect(item.setProcessingState)
node.state_message_changed.disconnect(item.setStateMessage)
self.remove_node_item(item)
def node_items(self):
"""
Return all :class:`.NodeItem` instances in the scene.
"""
return list(self.__node_items)
def add_link_item(self, item):
"""
Add a link (:class:`.LinkItem`) to the scene.
"""
if item.scene() is not self:
self.addItem(item)
item.setFont(self.font())
self.__link_items.append(item)
self.link_item_added.emit(item)
log.info("Added link %r -> %r to '%s'" % \
(item.sourceItem.title(), item.sinkItem.title(), self))
self.__anchor_layout.invalidateLink(item)
return item
def add_link(self, scheme_link):
"""
Create and add a :class:`.LinkItem` instance for a
:class:`SchemeLink` instance. If the link is already in the scene
do nothing and just return its :class:`.LinkItem`.
"""
if scheme_link in self.__item_for_link:
return self.__item_for_link[scheme_link]
source = self.__item_for_node[scheme_link.source_node]
sink = self.__item_for_node[scheme_link.sink_node]
item = self.new_link_item(source, scheme_link.source_channel,
sink, scheme_link.sink_channel)
item.setEnabled(scheme_link.enabled)
scheme_link.enabled_changed.connect(item.setEnabled)
if scheme_link.is_dynamic():
item.setDynamic(True)
item.setDynamicEnabled(scheme_link.dynamic_enabled)
scheme_link.dynamic_enabled_changed.connect(item.setDynamicEnabled)
self.add_link_item(item)
self.__item_for_link[scheme_link] = item
return item
def new_link_item(self, source_item, source_channel,
sink_item, sink_channel):
"""
Construct and return a new :class:`.LinkItem`
"""
item = items.LinkItem()
item.setSourceItem(source_item)
item.setSinkItem(sink_item)
def channel_name(channel):
if isinstance(channel, basestring):
return channel
else:
return channel.name
source_name = channel_name(source_channel)
sink_name = channel_name(sink_channel)
fmt = u"<b>{0}</b> \u2192 <b>{1}</b>"
item.setToolTip(
fmt.format(escape(source_name),
escape(sink_name))
)
item.setSourceName(source_name)
item.setSinkName(sink_name)
item.setChannelNamesVisible(self.__channel_names_visible)
return item
def remove_link_item(self, item):
"""
Remove a link (:class:`.LinkItem`) from the scene.
"""
# Invalidate the anchor layout.
self.__anchor_layout.invalidateAnchorItem(
item.sourceItem.outputAnchorItem
)
self.__anchor_layout.invalidateAnchorItem(
item.sinkItem.inputAnchorItem
)
self.__link_items.remove(item)
# Remove the anchor points.
item.removeLink()
self.removeItem(item)
self.link_item_removed.emit(item)
log.info("Removed link '%s' from '%s'" % (item, self))
return item
def remove_link(self, scheme_link):
"""
Remove a :class:`.LinkItem` instance that was previously constructed
for a :class:`SchemeLink` instance `link` using the `add_link` method.
"""
item = self.__item_for_link.pop(scheme_link)
scheme_link.enabled_changed.disconnect(item.setEnabled)
if scheme_link.is_dynamic():
scheme_link.dynamic_enabled_changed.disconnect(
item.setDynamicEnabled
)
self.remove_link_item(item)
def link_items(self):
"""
Return all :class:`.LinkItem`\s in the scene.
"""
return list(self.__link_items)
def add_annotation_item(self, annotation):
"""
Add an :class:`.Annotation` item to the scene.
"""
self.__annotation_items.append(annotation)
self.addItem(annotation)
self.annotation_added.emit(annotation)
return annotation
def add_annotation(self, scheme_annot):
"""
Create a new item for :class:`SchemeAnnotation` and add it
to the scene. If the `scheme_annot` is already in the scene do
nothing and just return its item.
"""
if scheme_annot in self.__item_for_annotation:
# Already added
return self.__item_for_annotation[scheme_annot]
if isinstance(scheme_annot, scheme.SchemeTextAnnotation):
item = items.TextAnnotation()
item.setPlainText(scheme_annot.text)
x, y, w, h = scheme_annot.rect
item.setPos(x, y)
item.resize(w, h)
item.setTextInteractionFlags(Qt.TextEditorInteraction)
font = font_from_dict(scheme_annot.font, item.font())
item.setFont(font)
scheme_annot.text_changed.connect(item.setPlainText)
elif isinstance(scheme_annot, scheme.SchemeArrowAnnotation):
item = items.ArrowAnnotation()
start, end = scheme_annot.start_pos, scheme_annot.end_pos
item.setLine(QLineF(QPointF(*start), QPointF(*end)))
item.setColor(QColor(scheme_annot.color))
scheme_annot.geometry_changed.connect(
self.__on_scheme_annot_geometry_change
)
self.add_annotation_item(item)
self.__item_for_annotation[scheme_annot] = item
return item
def remove_annotation_item(self, annotation):
"""
Remove an :class:`.Annotation` instance from the scene.
"""
self.__annotation_items.remove(annotation)
self.removeItem(annotation)
self.annotation_removed.emit(annotation)
def remove_annotation(self, scheme_annotation):
"""
Remove an :class:`.Annotation` instance that was previously added
using :func:`add_anotation`.
"""
item = self.__item_for_annotation.pop(scheme_annotation)
scheme_annotation.geometry_changed.disconnect(
self.__on_scheme_annot_geometry_change
)
if isinstance(scheme_annotation, scheme.SchemeTextAnnotation):
scheme_annotation.text_changed.disconnect(
item.setPlainText
)
self.remove_annotation_item(item)
def annotation_items(self):
"""
Return all :class:`.Annotation` items in the scene.
"""
return self.__annotation_items
def item_for_annotation(self, scheme_annotation):
return self.__item_for_annotation[scheme_annotation]
def annotation_for_item(self, item):
rev = dict(reversed(item) \
for item in self.__item_for_annotation.items())
return rev[item]
def commit_scheme_node(self, node):
"""
Commit the `node` into the scheme.
"""
if not self.editable:
raise Exception("Scheme not editable.")
if node not in self.__item_for_node:
raise ValueError("No 'NodeItem' for node.")
item = self.__item_for_node[node]
try:
self.scheme.add_node(node)
except Exception:
log.error("An error occurred while committing node '%s'",
node, exc_info=True)
# Cleanup (remove the node item)
self.remove_node_item(item)
raise
log.info("Commited node '%s' from '%s' to '%s'" % \
(node, self, self.scheme))
def commit_scheme_link(self, link):
"""
Commit a scheme link.
"""
if not self.editable:
raise Exception("Scheme not editable")
if link not in self.__item_for_link:
raise ValueError("No 'LinkItem' for link.")
self.scheme.add_link(link)
log.info("Commited link '%s' from '%s' to '%s'" % \
(link, self, self.scheme))
def node_for_item(self, item):
"""
Return the `SchemeNode` for the `item`.
"""
rev = dict([(v, k) for k, v in self.__item_for_node.items()])
return rev[item]
def item_for_node(self, node):
"""
Return the :class:`NodeItem` instance for a :class:`SchemeNode`.
"""
return self.__item_for_node[node]
def link_for_item(self, item):
"""
Return the `SchemeLink for `item` (:class:`LinkItem`).
"""
rev = dict([(v, k) for k, v in self.__item_for_link.items()])
return rev[item]
def item_for_link(self, link):
"""
Return the :class:`LinkItem` for a :class:`SchemeLink`
"""
return self.__item_for_link[link]
def selected_node_items(self):
"""
Return the selected :class:`NodeItem`'s.
"""
return [item for item in self.__node_items if item.isSelected()]
def selected_annotation_items(self):
"""
Return the selected :class:`Annotation`'s
"""
return [item for item in self.__annotation_items if item.isSelected()]
def node_links(self, node_item):
"""
Return all links from the `node_item` (:class:`NodeItem`).
"""
return self.node_output_links(node_item) + \
self.node_input_links(node_item)
def node_output_links(self, node_item):
"""
Return a list of all output links from `node_item`.
"""
return [link for link in self.__link_items
if link.sourceItem == node_item]
def node_input_links(self, node_item):
"""
Return a list of all input links for `node_item`.
"""
return [link for link in self.__link_items
if link.sinkItem == node_item]
def neighbor_nodes(self, node_item):
"""
Return a list of `node_item`'s (class:`NodeItem`) neighbor nodes.
"""
neighbors = map(attrgetter("sourceItem"),
self.node_input_links(node_item))
neighbors.extend(map(attrgetter("sinkItem"),
self.node_output_links(node_item)))
return neighbors
def on_widget_state_change(self, widget, state):
pass
def on_link_state_change(self, link, state):
pass
def on_scheme_change(self, ):
pass
def _on_position_change(self, item):
# Invalidate the anchor point layout and schedule a layout.
self.__anchor_layout.invalidateNode(item)
self.node_item_position_changed.emit(item, item.pos())
def __on_node_pos_changed(self, pos):
node = self.sender()
item = self.__item_for_node[node]
item.setPos(*pos)
def __on_scheme_annot_geometry_change(self):
annot = self.sender()
item = self.__item_for_annotation[annot]
if isinstance(annot, scheme.SchemeTextAnnotation):
item.setGeometry(QRectF(*annot.rect))
elif isinstance(annot, scheme.SchemeArrowAnnotation):
p1 = item.mapFromScene(QPointF(*annot.start_pos))
p2 = item.mapFromScene(QPointF(*annot.end_pos))
item.setLine(QLineF(p1, p2))
else:
pass
def item_at(self, pos, type_or_tuple=None, buttons=0):
"""Return the item at `pos` that is an instance of the specified
type (`type_or_tuple`). If `buttons` (`Qt.MouseButtons`) is given
only return the item if it is the top level item that would
accept any of the buttons (`QGraphicsItem.acceptedMouseButtons`).
"""
rect = QRectF(pos, QSizeF(1, 1))
items = self.items(rect)
if buttons:
items = itertools.dropwhile(
lambda item: not item.acceptedMouseButtons() & buttons,
items
)
items = list(items)[:1]
if type_or_tuple:
items = [i for i in items if isinstance(i, type_or_tuple)]
return items[0] if items else None
if map(int, PYQT_VERSION_STR.split('.')) < [4, 9]:
# For QGraphicsObject subclasses items, itemAt ... return a
# QGraphicsItem wrapper instance and not the actual class instance.
def itemAt(self, *args, **kwargs):
item = QGraphicsScene.itemAt(self, *args, **kwargs)
return toGraphicsObjectIfPossible(item)
def items(self, *args, **kwargs):
items = QGraphicsScene.items(self, *args, **kwargs)
return map(toGraphicsObjectIfPossible, items)
def selectedItems(self, *args, **kwargs):
return map(toGraphicsObjectIfPossible,
QGraphicsScene.selectedItems(self, *args, **kwargs))
def collidingItems(self, *args, **kwargs):
return map(toGraphicsObjectIfPossible,
QGraphicsScene.collidingItems(self, *args, **kwargs))
def focusItem(self, *args, **kwargs):
item = QGraphicsScene.focusItem(self, *args, **kwargs)
return toGraphicsObjectIfPossible(item)
def mouseGrabberItem(self, *args, **kwargs):
item = QGraphicsScene.mouseGrabberItem(self, *args, **kwargs)
return toGraphicsObjectIfPossible(item)
def mousePressEvent(self, event):
if self.user_interaction_handler and \
self.user_interaction_handler.mousePressEvent(event):
return
# Right (context) click on the node item. If the widget is not
# in the current selection then select the widget (only the widget).
# Else simply return and let customContextMenuReqested signal
# handle it
shape_item = self.item_at(event.scenePos(), items.NodeItem)
if shape_item and event.button() == Qt.RightButton and \
shape_item.flags() & QGraphicsItem.ItemIsSelectable:
if not shape_item.isSelected():
self.clearSelection()
shape_item.setSelected(True)
return QGraphicsScene.mousePressEvent(self, event)
def mouseMoveEvent(self, event):
if self.user_interaction_handler and \
self.user_interaction_handler.mouseMoveEvent(event):
return
return QGraphicsScene.mouseMoveEvent(self, event)
def mouseReleaseEvent(self, event):
if self.user_interaction_handler and \
self.user_interaction_handler.mouseReleaseEvent(event):
return
return QGraphicsScene.mouseReleaseEvent(self, event)
def mouseDoubleClickEvent(self, event):
if self.user_interaction_handler and \
self.user_interaction_handler.mouseDoubleClickEvent(event):
return
return QGraphicsScene.mouseDoubleClickEvent(self, event)
def keyPressEvent(self, event):
if self.user_interaction_handler and \
self.user_interaction_handler.keyPressEvent(event):
return
return QGraphicsScene.keyPressEvent(self, event)
def keyReleaseEvent(self, event):
if self.user_interaction_handler and \
self.user_interaction_handler.keyReleaseEvent(event):
return
return QGraphicsScene.keyReleaseEvent(self, event)
def set_user_interaction_handler(self, handler):
if self.user_interaction_handler and \
not self.user_interaction_handler.isFinished():
self.user_interaction_handler.cancel()
log.info("Setting interaction '%s' to '%s'" % (handler, self))
self.user_interaction_handler = handler
if handler:
handler.start()
def event(self, event):
# TODO: change the base class of Node/LinkItem to QGraphicsWidget.
# It already handles font changes.
if event.type() == QEvent.FontChange:
self.__update_font()
return QGraphicsScene.event(self, event)
def __update_font(self):
font = self.font()
for item in self.__node_items + self.__link_items:
item.setFont(font)
def __str__(self):
return "%s(objectName=%r, ...)" % \
(type(self).__name__, str(self.objectName()))
try:
from PyQt4.QtCore import PYQT_VERSION_STR as __version__ # analysis:ignore
except ImportError:
# Trying PyQt5 before switching to PySide (at this point, PyQt4 may
# not be installed but PyQt5 or Pyside could still be if the QT_API
# environment variable hasn't been set-up)
try:
import PyQt5 # analysis:ignore
API = os.environ['QT_API'] = 'pyqt5'
API_NAME = 'PyQt5'
except ImportError:
API = os.environ['QT_API'] = 'pyside'
API_NAME = 'PySide'
else:
is_old_pyqt = __version__.startswith(('4.4', '4.5', '4.6', '4.7'))
is_pyqt46 = __version__.startswith('4.6')
import sip
try:
API_NAME += (" (API v%d)" % sip.getapi('QString'))
except AttributeError:
pass
from PyQt4 import uic # analysis:ignore
PYQT5 = False
if API == 'pyqt5':
try:
from PyQt5.QtCore import PYQT_VERSION_STR as __version__
from PyQt5 import uic # analysis:ignore
PYQT5 = True
is_old_pyqt = is_pyqt46 = False
def closeEvent(self, event):
super(FigureWindow, self).closeEvent(event)
if PYQT_VERSION_STR.startswith('4.6'):
self.emit(SIGNAL('destroyed()'))
# try:
# import sip
# sip.setapi('QString', 2)
# sip.setapi('QVariant', 2)
# except AttributeError:
# warnings.warn("PyQt version is < v4.6\n"
# "We try to keep guidata compatible with PyQt >=4.4, "
# "so please report any compatibility issue.",
# PendingDeprecationWarning, stacklevel=2)
# except ValueError, error:
# warnings.warn("PyQt has been set to API#1\n"
# "Note that, even if guidata is designed for API#2, "
# "we try to keep it compatible with API#1, "
# "so please report any compatibility issue.",
# PendingDeprecationWarning, stacklevel=2)
try:
from PyQt4.QtCore import PYQT_VERSION_STR as __version__
__version_info__ = tuple(__version__.split('.')+['final', 1])
is_pyqt46 = __version__.startswith('4.6')
except ImportError:
# Switching to PySide
os.environ['QT_API'] = _modname = 'pyside'
if _modname == 'pyside':
warnings.warn("guidata is still not fully compatible with PySide",
RuntimeWarning)
import PySide
__version__ = PySide.__version__
from PySide import *
is_pyqt46 = False
def closeEvent(self, event):
super(QsciEditor, self).closeEvent(event)
if PYQT_VERSION_STR.startswith('4.6'):
self.emit(SIGNAL('destroyed()'))
try:
sip.setapi('QString', 2)
sip.setapi('QVariant', 2)
except: # AttributeError:
# PyQt < v4.6: in future version, we should warn the user
# that PyQt is outdated and won't be supported by Spyder >v2.1
pass
try:
from PyQt4.QtCore import PYQT_VERSION_STR as __version__
except ImportError:
# Switching to PySide
API = os.environ['QT_API'] = 'pyside'
API_NAME = 'PySide'
else:
__version_info__ = tuple(__version__.split('.') + ['final', 1])
is_old_pyqt = __version__.startswith(('4.4', '4.5', '4.6', '4.7'))
is_pyqt46 = __version__.startswith('4.6')
import sip
try:
API_NAME += (" (API v%d)" % sip.getapi('QString'))
except AttributeError:
pass
if API == 'pyside':
try:
from PySide import __version__ # analysis:ignore
except ImportError:
raise ImportError("Spyder requires PySide or PyQt to be installed")
else:
is_old_pyqt = is_pyqt46 = False
QTreeWidget,
QTreeWidgetItem,
QTreeWidgetItemIterator,
QValidator,
QVBoxLayout,
QWidget,
)
from PyQt4.uic import loadUi
def getQApp():
return qApp
qt_imported = True
qt_variant = "PyQt4"
qt_version_no = list(map(int, QT_VERSION_STR.split(".")))
_ver = PYQT_VERSION_STR.split(".")
ver = _ver + ["0"] * (3 - len(_ver))
pyqt_version_no = list(map(int, ver))[:3]
except BaseException:
pass
try:
from PyQt4.QtWebKit import QWebPage
except ImportError:
pass
#
# PySide
#
if (qt_variant == "PySide") or (qt_variant is None and not qt_imported):
#
