176 lines
6.9 KiB
Python
176 lines
6.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
This example demonstrates the use of pyqtgraph's parametertree system. This provides
|
|
a simple way to generate user interfaces that control sets of parameters. The example
|
|
demonstrates a variety of different parameter types (int, float, list, etc.)
|
|
as well as some customized parameter types
|
|
|
|
"""
|
|
|
|
|
|
import initExample ## Add path to library (just for examples; you do not need this)
|
|
|
|
import pyqtgraph as pg
|
|
from pyqtgraph.Qt import QtCore, QtGui
|
|
|
|
|
|
app = QtGui.QApplication([])
|
|
import pyqtgraph.parametertree.parameterTypes as pTypes
|
|
from pyqtgraph.parametertree import Parameter, ParameterTree, ParameterItem, registerParameterType
|
|
|
|
|
|
## test subclassing parameters
|
|
## This parameter automatically generates two child parameters which are always reciprocals of each other
|
|
class ComplexParameter(pTypes.GroupParameter):
|
|
def __init__(self, **opts):
|
|
opts['type'] = 'bool'
|
|
opts['value'] = True
|
|
pTypes.GroupParameter.__init__(self, **opts)
|
|
|
|
self.addChild({'name': 'A = 1/B', 'type': 'float', 'value': 7, 'suffix': 'Hz', 'siPrefix': True})
|
|
self.addChild({'name': 'B = 1/A', 'type': 'float', 'value': 1/7., 'suffix': 's', 'siPrefix': True})
|
|
self.a = self.param('A = 1/B')
|
|
self.b = self.param('B = 1/A')
|
|
self.a.sigValueChanged.connect(self.aChanged)
|
|
self.b.sigValueChanged.connect(self.bChanged)
|
|
|
|
def aChanged(self):
|
|
self.b.setValue(1.0 / self.a.value(), blockSignal=self.bChanged)
|
|
|
|
def bChanged(self):
|
|
self.a.setValue(1.0 / self.b.value(), blockSignal=self.aChanged)
|
|
|
|
|
|
## test add/remove
|
|
## this group includes a menu allowing the user to add new parameters into its child list
|
|
class ScalableGroup(pTypes.GroupParameter):
|
|
def __init__(self, **opts):
|
|
opts['type'] = 'group'
|
|
opts['addText'] = "Add"
|
|
opts['addList'] = ['str', 'float', 'int']
|
|
pTypes.GroupParameter.__init__(self, **opts)
|
|
|
|
def addNew(self, typ):
|
|
val = {
|
|
'str': '',
|
|
'float': 0.0,
|
|
'int': 0
|
|
}[typ]
|
|
self.addChild(dict(name="ScalableParam %d" % (len(self.childs)+1), type=typ, value=val, removable=True, renamable=True))
|
|
|
|
|
|
|
|
|
|
params = [
|
|
{'name': 'Basic parameter data types', 'type': 'group', 'children': [
|
|
{'name': 'Integer', 'type': 'int', 'value': 10},
|
|
{'name': 'Float', 'type': 'float', 'value': 10.5, 'step': 0.1},
|
|
{'name': 'String', 'type': 'str', 'value': "hi"},
|
|
{'name': 'List', 'type': 'list', 'values': [1,2,3], 'value': 2},
|
|
{'name': 'Named List', 'type': 'list', 'values': {"one": 1, "two": "twosies", "three": [3,3,3]}, 'value': 2},
|
|
{'name': 'Boolean', 'type': 'bool', 'value': True, 'tip': "This is a checkbox"},
|
|
{'name': 'Color', 'type': 'color', 'value': "FF0", 'tip': "This is a color button"},
|
|
{'name': 'Gradient', 'type': 'colormap'},
|
|
{'name': 'Subgroup', 'type': 'group', 'children': [
|
|
{'name': 'Sub-param 1', 'type': 'int', 'value': 10},
|
|
{'name': 'Sub-param 2', 'type': 'float', 'value': 1.2e6},
|
|
]},
|
|
{'name': 'Text Parameter', 'type': 'text', 'value': 'Some text...'},
|
|
{'name': 'Action Parameter', 'type': 'action'},
|
|
]},
|
|
{'name': 'Numerical Parameter Options', 'type': 'group', 'children': [
|
|
{'name': 'Units + SI prefix', 'type': 'float', 'value': 1.2e-6, 'step': 1e-6, 'siPrefix': True, 'suffix': 'V'},
|
|
{'name': 'Limits (min=7;max=15)', 'type': 'int', 'value': 11, 'limits': (7, 15), 'default': -6},
|
|
{'name': 'DEC stepping', 'type': 'float', 'value': 1.2e6, 'dec': True, 'step': 1, 'siPrefix': True, 'suffix': 'Hz'},
|
|
|
|
]},
|
|
{'name': 'Save/Restore functionality', 'type': 'group', 'children': [
|
|
{'name': 'Save State', 'type': 'action'},
|
|
{'name': 'Restore State', 'type': 'action', 'children': [
|
|
{'name': 'Add missing items', 'type': 'bool', 'value': True},
|
|
{'name': 'Remove extra items', 'type': 'bool', 'value': True},
|
|
]},
|
|
]},
|
|
{'name': 'Extra Parameter Options', 'type': 'group', 'children': [
|
|
{'name': 'Read-only', 'type': 'float', 'value': 1.2e6, 'siPrefix': True, 'suffix': 'Hz', 'readonly': True},
|
|
{'name': 'Renamable', 'type': 'float', 'value': 1.2e6, 'siPrefix': True, 'suffix': 'Hz', 'renamable': True},
|
|
{'name': 'Removable', 'type': 'float', 'value': 1.2e6, 'siPrefix': True, 'suffix': 'Hz', 'removable': True},
|
|
]},
|
|
ComplexParameter(name='Custom parameter group (reciprocal values)'),
|
|
ScalableGroup(name="Expandable Parameter Group", children=[
|
|
{'name': 'ScalableParam 1', 'type': 'str', 'value': "default param 1"},
|
|
{'name': 'ScalableParam 2', 'type': 'str', 'value': "default param 2"},
|
|
]),
|
|
]
|
|
|
|
## Create tree of Parameter objects
|
|
p = Parameter.create(name='params', type='group', children=params)
|
|
|
|
## If anything changes in the tree, print a message
|
|
def change(param, changes):
|
|
print("tree changes:")
|
|
for param, change, data in changes:
|
|
path = p.childPath(param)
|
|
if path is not None:
|
|
childName = '.'.join(path)
|
|
else:
|
|
childName = param.name()
|
|
print(' parameter: %s'% childName)
|
|
print(' change: %s'% change)
|
|
print(' data: %s'% str(data))
|
|
print(' ----------')
|
|
|
|
p.sigTreeStateChanged.connect(change)
|
|
|
|
|
|
def valueChanging(param, value):
|
|
print("Value changing (not finalized):", param, value)
|
|
|
|
# Too lazy for recursion:
|
|
for child in p.children():
|
|
child.sigValueChanging.connect(valueChanging)
|
|
for ch2 in child.children():
|
|
ch2.sigValueChanging.connect(valueChanging)
|
|
|
|
|
|
|
|
def save():
|
|
global state
|
|
state = p.saveState()
|
|
|
|
def restore():
|
|
global state
|
|
add = p['Save/Restore functionality', 'Restore State', 'Add missing items']
|
|
rem = p['Save/Restore functionality', 'Restore State', 'Remove extra items']
|
|
p.restoreState(state, addChildren=add, removeChildren=rem)
|
|
p.param('Save/Restore functionality', 'Save State').sigActivated.connect(save)
|
|
p.param('Save/Restore functionality', 'Restore State').sigActivated.connect(restore)
|
|
|
|
|
|
## Create two ParameterTree widgets, both accessing the same data
|
|
t = ParameterTree()
|
|
t.setParameters(p, showTop=False)
|
|
t.setWindowTitle('pyqtgraph example: Parameter Tree')
|
|
t2 = ParameterTree()
|
|
t2.setParameters(p, showTop=False)
|
|
|
|
win = QtGui.QWidget()
|
|
layout = QtGui.QGridLayout()
|
|
win.setLayout(layout)
|
|
layout.addWidget(QtGui.QLabel("These are two views of the same data. They should always display the same values."), 0, 0, 1, 2)
|
|
layout.addWidget(t, 1, 0, 1, 1)
|
|
layout.addWidget(t2, 1, 1, 1, 1)
|
|
win.show()
|
|
win.resize(800,800)
|
|
|
|
## test save/restore
|
|
s = p.saveState()
|
|
p.restoreState(s)
|
|
|
|
|
|
## Start Qt event loop unless running in interactive mode or using pyside.
|
|
if __name__ == '__main__':
|
|
import sys
|
|
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
|
|
QtGui.QApplication.instance().exec_()
|