679 lines
25 KiB
Python
679 lines
25 KiB
Python
from ..Qt import QtCore, QtGui
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from ..python2_3 import asUnicode
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from .Parameter import Parameter, registerParameterType
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from .ParameterItem import ParameterItem
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from ..widgets.SpinBox import SpinBox
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from ..widgets.ColorButton import ColorButton
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from ..colormap import ColorMap
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#from ..widgets.GradientWidget import GradientWidget ## creates import loop
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from .. import pixmaps as pixmaps
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from .. import functions as fn
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import os, sys
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from ..pgcollections import OrderedDict
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class WidgetParameterItem(ParameterItem):
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"""
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ParameterTree item with:
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* label in second column for displaying value
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* simple widget for editing value (displayed instead of label when item is selected)
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* button that resets value to default
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========================== =============================================================
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**Registered Types:**
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int Displays a :class:`SpinBox <pyqtgraph.SpinBox>` in integer
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mode.
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float Displays a :class:`SpinBox <pyqtgraph.SpinBox>`.
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bool Displays a QCheckBox
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str Displays a QLineEdit
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color Displays a :class:`ColorButton <pyqtgraph.ColorButton>`
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colormap Displays a :class:`GradientWidget <pyqtgraph.GradientWidget>`
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========================== =============================================================
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This class can be subclassed by overriding makeWidget() to provide a custom widget.
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"""
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def __init__(self, param, depth):
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ParameterItem.__init__(self, param, depth)
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self.hideWidget = True ## hide edit widget, replace with label when not selected
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## set this to False to keep the editor widget always visible
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## build widget into column 1 with a display label and default button.
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w = self.makeWidget()
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self.widget = w
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self.eventProxy = EventProxy(w, self.widgetEventFilter)
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opts = self.param.opts
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if 'tip' in opts:
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w.setToolTip(opts['tip'])
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self.defaultBtn = QtGui.QPushButton()
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self.defaultBtn.setFixedWidth(20)
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self.defaultBtn.setFixedHeight(20)
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modDir = os.path.dirname(__file__)
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self.defaultBtn.setIcon(QtGui.QIcon(pixmaps.getPixmap('default')))
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self.defaultBtn.clicked.connect(self.defaultClicked)
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self.displayLabel = QtGui.QLabel()
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layout = QtGui.QHBoxLayout()
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layout.setContentsMargins(0, 0, 0, 0)
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layout.setSpacing(2)
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layout.addWidget(w)
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layout.addWidget(self.displayLabel)
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layout.addWidget(self.defaultBtn)
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self.layoutWidget = QtGui.QWidget()
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self.layoutWidget.setLayout(layout)
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if w.sigChanged is not None:
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w.sigChanged.connect(self.widgetValueChanged)
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if hasattr(w, 'sigChanging'):
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w.sigChanging.connect(self.widgetValueChanging)
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## update value shown in widget.
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if opts.get('value', None) is not None:
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self.valueChanged(self, opts['value'], force=True)
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else:
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## no starting value was given; use whatever the widget has
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self.widgetValueChanged()
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self.updateDefaultBtn()
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def makeWidget(self):
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"""
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Return a single widget that should be placed in the second tree column.
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The widget must be given three attributes:
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========== ============================================================
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sigChanged a signal that is emitted when the widget's value is changed
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value a function that returns the value
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setValue a function that sets the value
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========== ============================================================
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This is a good function to override in subclasses.
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"""
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opts = self.param.opts
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t = opts['type']
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if t in ('int', 'float'):
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defs = {
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'value': 0, 'min': None, 'max': None,
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'step': 1.0, 'dec': False,
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'siPrefix': False, 'suffix': '', 'decimals': 3,
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}
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if t == 'int':
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defs['int'] = True
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defs['minStep'] = 1.0
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for k in defs:
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if k in opts:
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defs[k] = opts[k]
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if 'limits' in opts:
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defs['min'], defs['max'] = opts['limits']
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w = SpinBox()
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w.setOpts(**defs)
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w.sigChanged = w.sigValueChanged
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w.sigChanging = w.sigValueChanging
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elif t == 'bool':
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w = QtGui.QCheckBox()
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w.sigChanged = w.toggled
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w.value = w.isChecked
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w.setValue = w.setChecked
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w.setEnabled(not opts.get('readonly', False))
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self.hideWidget = False
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elif t == 'str':
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w = QtGui.QLineEdit()
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w.setStyleSheet('border: 0px')
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w.sigChanged = w.editingFinished
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w.value = lambda: asUnicode(w.text())
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w.setValue = lambda v: w.setText(asUnicode(v))
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w.sigChanging = w.textChanged
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elif t == 'color':
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w = ColorButton()
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w.sigChanged = w.sigColorChanged
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w.sigChanging = w.sigColorChanging
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w.value = w.color
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w.setValue = w.setColor
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self.hideWidget = False
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w.setFlat(True)
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w.setEnabled(not opts.get('readonly', False))
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elif t == 'colormap':
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from ..widgets.GradientWidget import GradientWidget ## need this here to avoid import loop
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w = GradientWidget(orientation='bottom')
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w.sigChanged = w.sigGradientChangeFinished
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w.sigChanging = w.sigGradientChanged
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w.value = w.colorMap
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w.setValue = w.setColorMap
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self.hideWidget = False
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else:
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raise Exception("Unknown type '%s'" % asUnicode(t))
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return w
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def widgetEventFilter(self, obj, ev):
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## filter widget's events
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## catch TAB to change focus
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## catch focusOut to hide editor
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if ev.type() == ev.KeyPress:
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if ev.key() == QtCore.Qt.Key_Tab:
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self.focusNext(forward=True)
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return True ## don't let anyone else see this event
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elif ev.key() == QtCore.Qt.Key_Backtab:
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self.focusNext(forward=False)
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return True ## don't let anyone else see this event
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#elif ev.type() == ev.FocusOut:
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#self.hideEditor()
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return False
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def setFocus(self):
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self.showEditor()
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def isFocusable(self):
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return self.param.writable()
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def valueChanged(self, param, val, force=False):
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## called when the parameter's value has changed
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ParameterItem.valueChanged(self, param, val)
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self.widget.sigChanged.disconnect(self.widgetValueChanged)
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try:
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if force or val != self.widget.value():
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self.widget.setValue(val)
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self.updateDisplayLabel(val) ## always make sure label is updated, even if values match!
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finally:
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self.widget.sigChanged.connect(self.widgetValueChanged)
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self.updateDefaultBtn()
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def updateDefaultBtn(self):
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## enable/disable default btn
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self.defaultBtn.setEnabled(not self.param.valueIsDefault() and self.param.writable())
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# hide / show
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self.defaultBtn.setVisible(not self.param.readonly())
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def updateDisplayLabel(self, value=None):
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"""Update the display label to reflect the value of the parameter."""
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if value is None:
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value = self.param.value()
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opts = self.param.opts
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if isinstance(self.widget, QtGui.QAbstractSpinBox):
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text = asUnicode(self.widget.lineEdit().text())
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elif isinstance(self.widget, QtGui.QComboBox):
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text = self.widget.currentText()
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else:
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text = asUnicode(value)
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self.displayLabel.setText(text)
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def widgetValueChanged(self):
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## called when the widget's value has been changed by the user
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val = self.widget.value()
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newVal = self.param.setValue(val)
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def widgetValueChanging(self, *args):
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"""
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Called when the widget's value is changing, but not finalized.
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For example: editing text before pressing enter or changing focus.
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"""
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# This is a bit sketchy: assume the last argument of each signal is
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# the value..
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self.param.sigValueChanging.emit(self.param, args[-1])
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def selected(self, sel):
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"""Called when this item has been selected (sel=True) OR deselected (sel=False)"""
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ParameterItem.selected(self, sel)
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if self.widget is None:
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return
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if sel and self.param.writable():
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self.showEditor()
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elif self.hideWidget:
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self.hideEditor()
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def showEditor(self):
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self.widget.show()
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self.displayLabel.hide()
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self.widget.setFocus(QtCore.Qt.OtherFocusReason)
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if isinstance(self.widget, SpinBox):
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self.widget.selectNumber() # select the numerical portion of the text for quick editing
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def hideEditor(self):
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self.widget.hide()
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self.displayLabel.show()
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def limitsChanged(self, param, limits):
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"""Called when the parameter's limits have changed"""
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ParameterItem.limitsChanged(self, param, limits)
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t = self.param.opts['type']
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if t == 'int' or t == 'float':
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self.widget.setOpts(bounds=limits)
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else:
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return ## don't know what to do with any other types..
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def defaultChanged(self, param, value):
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self.updateDefaultBtn()
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def treeWidgetChanged(self):
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"""Called when this item is added or removed from a tree."""
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ParameterItem.treeWidgetChanged(self)
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## add all widgets for this item into the tree
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if self.widget is not None:
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tree = self.treeWidget()
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if tree is None:
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return
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tree.setItemWidget(self, 1, self.layoutWidget)
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self.displayLabel.hide()
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self.selected(False)
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def defaultClicked(self):
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self.param.setToDefault()
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def optsChanged(self, param, opts):
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"""Called when any options are changed that are not
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name, value, default, or limits"""
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#print "opts changed:", opts
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ParameterItem.optsChanged(self, param, opts)
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if 'readonly' in opts:
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self.updateDefaultBtn()
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if isinstance(self.widget, (QtGui.QCheckBox,ColorButton)):
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self.widget.setEnabled(not opts['readonly'])
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## If widget is a SpinBox, pass options straight through
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if isinstance(self.widget, SpinBox):
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# send only options supported by spinbox
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sbOpts = {}
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if 'units' in opts and 'suffix' not in opts:
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sbOpts['suffix'] = opts['units']
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for k,v in opts.items():
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if k in self.widget.opts:
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sbOpts[k] = v
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self.widget.setOpts(**sbOpts)
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self.updateDisplayLabel()
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class EventProxy(QtCore.QObject):
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def __init__(self, qobj, callback):
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QtCore.QObject.__init__(self)
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self.callback = callback
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qobj.installEventFilter(self)
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def eventFilter(self, obj, ev):
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return self.callback(obj, ev)
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class SimpleParameter(Parameter):
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itemClass = WidgetParameterItem
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def __init__(self, *args, **kargs):
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Parameter.__init__(self, *args, **kargs)
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## override a few methods for color parameters
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if self.opts['type'] == 'color':
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self.value = self.colorValue
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self.saveState = self.saveColorState
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def colorValue(self):
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return fn.mkColor(Parameter.value(self))
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def saveColorState(self, *args, **kwds):
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state = Parameter.saveState(self, *args, **kwds)
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state['value'] = fn.colorTuple(self.value())
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return state
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def _interpretValue(self, v):
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fn = {
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'int': int,
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'float': float,
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'bool': bool,
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'str': asUnicode,
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'color': self._interpColor,
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'colormap': self._interpColormap,
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}[self.opts['type']]
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return fn(v)
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def _interpColor(self, v):
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return fn.mkColor(v)
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def _interpColormap(self, v):
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if not isinstance(v, ColorMap):
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raise TypeError("Cannot set colormap parameter from object %r" % v)
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return v
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registerParameterType('int', SimpleParameter, override=True)
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registerParameterType('float', SimpleParameter, override=True)
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registerParameterType('bool', SimpleParameter, override=True)
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registerParameterType('str', SimpleParameter, override=True)
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registerParameterType('color', SimpleParameter, override=True)
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registerParameterType('colormap', SimpleParameter, override=True)
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class GroupParameterItem(ParameterItem):
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"""
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Group parameters are used mainly as a generic parent item that holds (and groups!) a set
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of child parameters. It also provides a simple mechanism for displaying a button or combo
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that can be used to add new parameters to the group.
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"""
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def __init__(self, param, depth):
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ParameterItem.__init__(self, param, depth)
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self.updateDepth(depth)
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self.addItem = None
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if 'addText' in param.opts:
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addText = param.opts['addText']
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if 'addList' in param.opts:
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self.addWidget = QtGui.QComboBox()
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self.addWidget.setSizeAdjustPolicy(QtGui.QComboBox.AdjustToContents)
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self.updateAddList()
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self.addWidget.currentIndexChanged.connect(self.addChanged)
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else:
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self.addWidget = QtGui.QPushButton(addText)
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self.addWidget.clicked.connect(self.addClicked)
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w = QtGui.QWidget()
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l = QtGui.QHBoxLayout()
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l.setContentsMargins(0,0,0,0)
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w.setLayout(l)
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l.addWidget(self.addWidget)
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l.addStretch()
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#l.addItem(QtGui.QSpacerItem(200, 10, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum))
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self.addWidgetBox = w
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self.addItem = QtGui.QTreeWidgetItem([])
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self.addItem.setFlags(QtCore.Qt.ItemIsEnabled)
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ParameterItem.addChild(self, self.addItem)
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def updateDepth(self, depth):
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## Change item's appearance based on its depth in the tree
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## This allows highest-level groups to be displayed more prominently.
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if depth == 0:
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for c in [0,1]:
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self.setBackground(c, QtGui.QBrush(QtGui.QColor(100,100,100)))
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self.setForeground(c, QtGui.QBrush(QtGui.QColor(220,220,255)))
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font = self.font(c)
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font.setBold(True)
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font.setPointSize(font.pointSize()+1)
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self.setFont(c, font)
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self.setSizeHint(0, QtCore.QSize(0, 25))
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else:
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for c in [0,1]:
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self.setBackground(c, QtGui.QBrush(QtGui.QColor(220,220,220)))
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font = self.font(c)
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font.setBold(True)
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#font.setPointSize(font.pointSize()+1)
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self.setFont(c, font)
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self.setSizeHint(0, QtCore.QSize(0, 20))
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def addClicked(self):
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"""Called when "add new" button is clicked
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The parameter MUST have an 'addNew' method defined.
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"""
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self.param.addNew()
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def addChanged(self):
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"""Called when "add new" combo is changed
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The parameter MUST have an 'addNew' method defined.
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"""
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if self.addWidget.currentIndex() == 0:
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return
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typ = asUnicode(self.addWidget.currentText())
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self.param.addNew(typ)
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self.addWidget.setCurrentIndex(0)
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def treeWidgetChanged(self):
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ParameterItem.treeWidgetChanged(self)
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self.treeWidget().setFirstItemColumnSpanned(self, True)
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if self.addItem is not None:
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self.treeWidget().setItemWidget(self.addItem, 0, self.addWidgetBox)
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self.treeWidget().setFirstItemColumnSpanned(self.addItem, True)
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def addChild(self, child): ## make sure added childs are actually inserted before add btn
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if self.addItem is not None:
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ParameterItem.insertChild(self, self.childCount()-1, child)
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else:
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ParameterItem.addChild(self, child)
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def optsChanged(self, param, changed):
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if 'addList' in changed:
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self.updateAddList()
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def updateAddList(self):
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self.addWidget.blockSignals(True)
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try:
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self.addWidget.clear()
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self.addWidget.addItem(self.param.opts['addText'])
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for t in self.param.opts['addList']:
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self.addWidget.addItem(t)
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finally:
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self.addWidget.blockSignals(False)
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class GroupParameter(Parameter):
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"""
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Group parameters are used mainly as a generic parent item that holds (and groups!) a set
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of child parameters.
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It also provides a simple mechanism for displaying a button or combo
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that can be used to add new parameters to the group. To enable this, the group
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must be initialized with the 'addText' option (the text will be displayed on
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a button which, when clicked, will cause addNew() to be called). If the 'addList'
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option is specified as well, then a dropdown-list of addable items will be displayed
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instead of a button.
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"""
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itemClass = GroupParameterItem
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def addNew(self, typ=None):
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"""
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This method is called when the user has requested to add a new item to the group.
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"""
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raise Exception("Must override this function in subclass.")
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def setAddList(self, vals):
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"""Change the list of options available for the user to add to the group."""
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self.setOpts(addList=vals)
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registerParameterType('group', GroupParameter, override=True)
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class ListParameterItem(WidgetParameterItem):
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"""
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WidgetParameterItem subclass providing comboBox that lets the user select from a list of options.
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"""
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def __init__(self, param, depth):
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self.targetValue = None
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WidgetParameterItem.__init__(self, param, depth)
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def makeWidget(self):
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opts = self.param.opts
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t = opts['type']
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w = QtGui.QComboBox()
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w.setMaximumHeight(20) ## set to match height of spin box and line edit
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w.sigChanged = w.currentIndexChanged
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w.value = self.value
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w.setValue = self.setValue
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self.widget = w ## needs to be set before limits are changed
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self.limitsChanged(self.param, self.param.opts['limits'])
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if len(self.forward) > 0:
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self.setValue(self.param.value())
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return w
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def value(self):
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key = asUnicode(self.widget.currentText())
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return self.forward.get(key, None)
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def setValue(self, val):
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self.targetValue = val
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if val not in self.reverse[0]:
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self.widget.setCurrentIndex(0)
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else:
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|
key = self.reverse[1][self.reverse[0].index(val)]
|
|
ind = self.widget.findText(key)
|
|
self.widget.setCurrentIndex(ind)
|
|
|
|
def limitsChanged(self, param, limits):
|
|
# set up forward / reverse mappings for name:value
|
|
|
|
if len(limits) == 0:
|
|
limits = [''] ## Can never have an empty list--there is always at least a singhe blank item.
|
|
|
|
self.forward, self.reverse = ListParameter.mapping(limits)
|
|
try:
|
|
self.widget.blockSignals(True)
|
|
val = self.targetValue #asUnicode(self.widget.currentText())
|
|
|
|
self.widget.clear()
|
|
for k in self.forward:
|
|
self.widget.addItem(k)
|
|
if k == val:
|
|
self.widget.setCurrentIndex(self.widget.count()-1)
|
|
self.updateDisplayLabel()
|
|
finally:
|
|
self.widget.blockSignals(False)
|
|
|
|
|
|
|
|
class ListParameter(Parameter):
|
|
itemClass = ListParameterItem
|
|
|
|
def __init__(self, **opts):
|
|
self.forward = OrderedDict() ## {name: value, ...}
|
|
self.reverse = ([], []) ## ([value, ...], [name, ...])
|
|
|
|
## Parameter uses 'limits' option to define the set of allowed values
|
|
if 'values' in opts:
|
|
opts['limits'] = opts['values']
|
|
if opts.get('limits', None) is None:
|
|
opts['limits'] = []
|
|
Parameter.__init__(self, **opts)
|
|
self.setLimits(opts['limits'])
|
|
|
|
def setLimits(self, limits):
|
|
self.forward, self.reverse = self.mapping(limits)
|
|
|
|
Parameter.setLimits(self, limits)
|
|
if len(self.reverse[0]) > 0 and self.value() not in self.reverse[0]:
|
|
self.setValue(self.reverse[0][0])
|
|
|
|
#def addItem(self, name, value=None):
|
|
#if name in self.forward:
|
|
#raise Exception("Name '%s' is already in use for this parameter" % name)
|
|
#limits = self.opts['limits']
|
|
#if isinstance(limits, dict):
|
|
#limits = limits.copy()
|
|
#limits[name] = value
|
|
#self.setLimits(limits)
|
|
#else:
|
|
#if value is not None:
|
|
#raise Exception ## raise exception or convert to dict?
|
|
#limits = limits[:]
|
|
#limits.append(name)
|
|
## what if limits == None?
|
|
|
|
@staticmethod
|
|
def mapping(limits):
|
|
## Return forward and reverse mapping objects given a limit specification
|
|
forward = OrderedDict() ## {name: value, ...}
|
|
reverse = ([], []) ## ([value, ...], [name, ...])
|
|
if isinstance(limits, dict):
|
|
for k, v in limits.items():
|
|
forward[k] = v
|
|
reverse[0].append(v)
|
|
reverse[1].append(k)
|
|
else:
|
|
for v in limits:
|
|
n = asUnicode(v)
|
|
forward[n] = v
|
|
reverse[0].append(v)
|
|
reverse[1].append(n)
|
|
return forward, reverse
|
|
|
|
registerParameterType('list', ListParameter, override=True)
|
|
|
|
|
|
|
|
class ActionParameterItem(ParameterItem):
|
|
def __init__(self, param, depth):
|
|
ParameterItem.__init__(self, param, depth)
|
|
self.layoutWidget = QtGui.QWidget()
|
|
self.layout = QtGui.QHBoxLayout()
|
|
self.layoutWidget.setLayout(self.layout)
|
|
self.button = QtGui.QPushButton(param.name())
|
|
#self.layout.addSpacing(100)
|
|
self.layout.addWidget(self.button)
|
|
self.layout.addStretch()
|
|
self.button.clicked.connect(self.buttonClicked)
|
|
param.sigNameChanged.connect(self.paramRenamed)
|
|
self.setText(0, '')
|
|
|
|
def treeWidgetChanged(self):
|
|
ParameterItem.treeWidgetChanged(self)
|
|
tree = self.treeWidget()
|
|
if tree is None:
|
|
return
|
|
|
|
tree.setFirstItemColumnSpanned(self, True)
|
|
tree.setItemWidget(self, 0, self.layoutWidget)
|
|
|
|
def paramRenamed(self, param, name):
|
|
self.button.setText(name)
|
|
|
|
def buttonClicked(self):
|
|
self.param.activate()
|
|
|
|
class ActionParameter(Parameter):
|
|
"""Used for displaying a button within the tree."""
|
|
itemClass = ActionParameterItem
|
|
sigActivated = QtCore.Signal(object)
|
|
|
|
def activate(self):
|
|
self.sigActivated.emit(self)
|
|
self.emitStateChanged('activated', None)
|
|
|
|
registerParameterType('action', ActionParameter, override=True)
|
|
|
|
|
|
|
|
class TextParameterItem(WidgetParameterItem):
|
|
def __init__(self, param, depth):
|
|
WidgetParameterItem.__init__(self, param, depth)
|
|
self.hideWidget = False
|
|
self.subItem = QtGui.QTreeWidgetItem()
|
|
self.addChild(self.subItem)
|
|
|
|
def treeWidgetChanged(self):
|
|
## TODO: fix so that superclass method can be called
|
|
## (WidgetParameter should just natively support this style)
|
|
#WidgetParameterItem.treeWidgetChanged(self)
|
|
self.treeWidget().setFirstItemColumnSpanned(self.subItem, True)
|
|
self.treeWidget().setItemWidget(self.subItem, 0, self.textBox)
|
|
|
|
# for now, these are copied from ParameterItem.treeWidgetChanged
|
|
self.setHidden(not self.param.opts.get('visible', True))
|
|
self.setExpanded(self.param.opts.get('expanded', True))
|
|
|
|
def makeWidget(self):
|
|
self.textBox = QtGui.QTextEdit()
|
|
self.textBox.setMaximumHeight(100)
|
|
self.textBox.setReadOnly(self.param.opts.get('readonly', False))
|
|
self.textBox.value = lambda: str(self.textBox.toPlainText())
|
|
self.textBox.setValue = self.textBox.setPlainText
|
|
self.textBox.sigChanged = self.textBox.textChanged
|
|
return self.textBox
|
|
|
|
class TextParameter(Parameter):
|
|
"""Editable string; displayed as large text box in the tree."""
|
|
itemClass = TextParameterItem
|
|
|
|
|
|
|
|
registerParameterType('text', TextParameter, override=True)
|