Updated parametertree documentation
This commit is contained in:
parent
0ee255acfb
commit
1c94d1b87c
@ -14,14 +14,39 @@ def registerParameterType(name, cls, override=False):
|
|||||||
|
|
||||||
|
|
||||||
class Parameter(QtCore.QObject):
|
class Parameter(QtCore.QObject):
|
||||||
"""Tree of name=value pairs (modifiable or not)
|
"""
|
||||||
|
Tree of name=value pairs (modifiable or not)
|
||||||
- Value may be integer, float, string, bool, color, or list selection
|
- Value may be integer, float, string, bool, color, or list selection
|
||||||
- Optionally, a custom widget may be specified for a property
|
- Optionally, a custom widget may be specified for a property
|
||||||
- Any number of extra columns may be added for other purposes
|
- Any number of extra columns may be added for other purposes
|
||||||
- Any values may be reset to a default value
|
- Any values may be reset to a default value
|
||||||
- Parameters may be grouped / nested
|
- Parameters may be grouped / nested
|
||||||
|
- Parameter may be subclassed to provide customized behavior.
|
||||||
|
|
||||||
For more Parameter types, see ParameterTree.parameterTypes module.
|
For more Parameter types, see ParameterTree.parameterTypes module.
|
||||||
|
|
||||||
|
=================================== =========================================================
|
||||||
|
**Signals:**
|
||||||
|
sigStateChanged(self, change, info) Emitted when anything changes about this parameter at
|
||||||
|
all.
|
||||||
|
The second argument is a string indicating what changed
|
||||||
|
('value', 'childAdded', etc..)
|
||||||
|
The third argument can be any extra information about
|
||||||
|
the change
|
||||||
|
sigTreeStateChanged(self, changes) Emitted when any child in the tree changes state
|
||||||
|
(but only if monitorChildren() is called)
|
||||||
|
the format of *changes* is [(param, change, info), ...]
|
||||||
|
sigValueChanged(self, value) Emitted when value is finished changing
|
||||||
|
sigValueChanging(self, value) Emitted immediately for all value changes,
|
||||||
|
including during editing.
|
||||||
|
sigChildAdded(self, child, index) Emitted when a child is added
|
||||||
|
sigChildRemoved(self, child) Emitted when a child is removed
|
||||||
|
sigParentChanged(self, parent) Emitted when this parameter's parent has changed
|
||||||
|
sigLimitsChanged(self, limits) Emitted when this parameter's limits have changed
|
||||||
|
sigDefaultChanged(self, default) Emitted when this parameter's default value has changed
|
||||||
|
sigNameChanged(self, name) Emitted when this parameter's name has changed
|
||||||
|
sigOptionsChanged(self, opts) Emitted when any of this parameter's options have changed
|
||||||
|
=================================== =========================================================
|
||||||
"""
|
"""
|
||||||
## name, type, limits, etc.
|
## name, type, limits, etc.
|
||||||
## can also carry UI hints (slider vs spinbox, etc.)
|
## can also carry UI hints (slider vs spinbox, etc.)
|
||||||
@ -244,25 +269,33 @@ class Parameter(QtCore.QObject):
|
|||||||
|
|
||||||
|
|
||||||
def defaultValue(self):
|
def defaultValue(self):
|
||||||
|
"""Return the default value for this parameter."""
|
||||||
return self.opts['default']
|
return self.opts['default']
|
||||||
|
|
||||||
def setDefault(self, val):
|
def setDefault(self, val):
|
||||||
|
"""Set the default value for this parameter."""
|
||||||
if self.opts['default'] == val:
|
if self.opts['default'] == val:
|
||||||
return
|
return
|
||||||
self.opts['default'] = val
|
self.opts['default'] = val
|
||||||
self.sigDefaultChanged.emit(self, val)
|
self.sigDefaultChanged.emit(self, val)
|
||||||
|
|
||||||
def setToDefault(self):
|
def setToDefault(self):
|
||||||
|
"""Set this parameter's value to the default."""
|
||||||
if self.hasDefault():
|
if self.hasDefault():
|
||||||
self.setValue(self.defaultValue())
|
self.setValue(self.defaultValue())
|
||||||
|
|
||||||
def hasDefault(self):
|
def hasDefault(self):
|
||||||
|
"""Returns True if this parameter has a default value."""
|
||||||
return 'default' in self.opts
|
return 'default' in self.opts
|
||||||
|
|
||||||
def valueIsDefault(self):
|
def valueIsDefault(self):
|
||||||
|
"""Returns True if this parameter's value is equal to the default value."""
|
||||||
return self.value() == self.defaultValue()
|
return self.value() == self.defaultValue()
|
||||||
|
|
||||||
def setLimits(self, limits):
|
def setLimits(self, limits):
|
||||||
|
"""Set limits on the acceptable values for this parameter.
|
||||||
|
The format of limits depends on the type of the parameter and
|
||||||
|
some parameters do not make use of limits at all."""
|
||||||
if 'limits' in self.opts and self.opts['limits'] == limits:
|
if 'limits' in self.opts and self.opts['limits'] == limits:
|
||||||
return
|
return
|
||||||
self.opts['limits'] = limits
|
self.opts['limits'] = limits
|
||||||
@ -270,10 +303,20 @@ class Parameter(QtCore.QObject):
|
|||||||
return limits
|
return limits
|
||||||
|
|
||||||
def writable(self):
|
def writable(self):
|
||||||
|
"""
|
||||||
|
Returns True if this parameter's value can be changed by the user.
|
||||||
|
Note that the value of the parameter can *always* be changed by
|
||||||
|
calling setValue().
|
||||||
|
"""
|
||||||
return not self.opts.get('readonly', False)
|
return not self.opts.get('readonly', False)
|
||||||
|
|
||||||
def setOpts(self, **opts):
|
def setOpts(self, **opts):
|
||||||
"""For setting any arbitrary options."""
|
"""
|
||||||
|
Set any arbitrary options on this parameter.
|
||||||
|
The exact behavior of this function will depend on the parameter type, but
|
||||||
|
most parameters will accept a common set of options: value, name, limits,
|
||||||
|
default, readonly, removable, renamable, visible, and enabled.
|
||||||
|
"""
|
||||||
changed = collections.OrderedDict()
|
changed = collections.OrderedDict()
|
||||||
for k in opts:
|
for k in opts:
|
||||||
if k == 'value':
|
if k == 'value':
|
||||||
@ -344,6 +387,7 @@ class Parameter(QtCore.QObject):
|
|||||||
return child
|
return child
|
||||||
|
|
||||||
def removeChild(self, child):
|
def removeChild(self, child):
|
||||||
|
"""Remove a child parameter."""
|
||||||
name = child.name()
|
name = child.name()
|
||||||
if name not in self.names or self.names[name] is not child:
|
if name not in self.names or self.names[name] is not child:
|
||||||
raise Exception("Parameter %s is not my child; can't remove." % str(child))
|
raise Exception("Parameter %s is not my child; can't remove." % str(child))
|
||||||
@ -355,22 +399,27 @@ class Parameter(QtCore.QObject):
|
|||||||
child.sigTreeStateChanged.disconnect(self.treeStateChanged)
|
child.sigTreeStateChanged.disconnect(self.treeStateChanged)
|
||||||
|
|
||||||
def clearChildren(self):
|
def clearChildren(self):
|
||||||
|
"""Remove all child parameters."""
|
||||||
for ch in self.childs[:]:
|
for ch in self.childs[:]:
|
||||||
self.removeChild(ch)
|
self.removeChild(ch)
|
||||||
|
|
||||||
def children(self):
|
def children(self):
|
||||||
|
"""Return a list of this parameter's children."""
|
||||||
## warning -- this overrides QObject.children
|
## warning -- this overrides QObject.children
|
||||||
return self.childs[:]
|
return self.childs[:]
|
||||||
|
|
||||||
def parentChanged(self, parent):
|
def parentChanged(self, parent):
|
||||||
|
"""This method is called when the parameter's parent has changed.
|
||||||
|
It may be useful to extend this method in subclasses."""
|
||||||
self._parent = parent
|
self._parent = parent
|
||||||
self.sigParentChanged.emit(self, parent)
|
self.sigParentChanged.emit(self, parent)
|
||||||
|
|
||||||
def parent(self):
|
def parent(self):
|
||||||
|
"""Return the parent of this parameter."""
|
||||||
return self._parent
|
return self._parent
|
||||||
|
|
||||||
def remove(self):
|
def remove(self):
|
||||||
"""Remove self from parent's child list"""
|
"""Remove this parameter from its parent's child list"""
|
||||||
parent = self.parent()
|
parent = self.parent()
|
||||||
if parent is None:
|
if parent is None:
|
||||||
raise Exception("Cannot remove; no parent.")
|
raise Exception("Cannot remove; no parent.")
|
||||||
@ -396,13 +445,21 @@ class Parameter(QtCore.QObject):
|
|||||||
yield ch
|
yield ch
|
||||||
|
|
||||||
def __getitem__(self, names):
|
def __getitem__(self, names):
|
||||||
"""Get the value of a child parameter"""
|
"""Get the value of a child parameter. The name may also be a tuple giving
|
||||||
|
the path to a sub-parameter::
|
||||||
|
|
||||||
|
value = param[('child', 'grandchild')]
|
||||||
|
"""
|
||||||
if not isinstance(names, tuple):
|
if not isinstance(names, tuple):
|
||||||
names = (names,)
|
names = (names,)
|
||||||
return self.param(*names).value()
|
return self.param(*names).value()
|
||||||
|
|
||||||
def __setitem__(self, names, value):
|
def __setitem__(self, names, value):
|
||||||
"""Set the value of a child parameter"""
|
"""Set the value of a child parameter. The name may also be a tuple giving
|
||||||
|
the path to a sub-parameter::
|
||||||
|
|
||||||
|
param[('child', 'grandchild')] = value
|
||||||
|
"""
|
||||||
if isinstance(names, basestring):
|
if isinstance(names, basestring):
|
||||||
names = (names,)
|
names = (names,)
|
||||||
return self.param(*names).setValue(value)
|
return self.param(*names).setValue(value)
|
||||||
@ -424,6 +481,7 @@ class Parameter(QtCore.QObject):
|
|||||||
return "<%s '%s' at 0x%x>" % (self.__class__.__name__, self.name(), id(self))
|
return "<%s '%s' at 0x%x>" % (self.__class__.__name__, self.name(), id(self))
|
||||||
|
|
||||||
def __getattr__(self, attr):
|
def __getattr__(self, attr):
|
||||||
|
## Leaving this undocumented because I might like to remove it in the future..
|
||||||
#print type(self), attr
|
#print type(self), attr
|
||||||
if attr in self.names:
|
if attr in self.names:
|
||||||
return self.param(attr)
|
return self.param(attr)
|
||||||
@ -442,9 +500,12 @@ class Parameter(QtCore.QObject):
|
|||||||
self.items[item] = None
|
self.items[item] = None
|
||||||
|
|
||||||
def hide(self):
|
def hide(self):
|
||||||
|
"""Hide this parameter. It and its children will no longer be visible in any ParameterTree
|
||||||
|
widgets it is connected to."""
|
||||||
self.show(False)
|
self.show(False)
|
||||||
|
|
||||||
def show(self, s=True):
|
def show(self, s=True):
|
||||||
|
"""Show this parameter. """
|
||||||
self.opts['visible'] = s
|
self.opts['visible'] = s
|
||||||
self.sigOptionsChanged.emit(self, {'visible': s})
|
self.sigOptionsChanged.emit(self, {'visible': s})
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user