Commit f99ed791 authored by Luke Campagnola's avatar Luke Campagnola
Browse files

Added LayoutWidget

parent 96202aed
from pyqtgraph.Qt import QtGui, QtCore
__all__ = ['LayoutWidget']
class LayoutWidget(QtGui.QWidget):
"""
Convenience class used for laying out QWidgets in a grid.
(It's just a little less effort to use than QGridLayout)
"""
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.layout = QtGui.QGridLayout()
self.setLayout(self.layout)
self.items = {}
self.rows = {}
self.currentRow = 0
self.currentCol = 0
def nextRow(self):
"""Advance to next row for automatic widget placement"""
self.currentRow += 1
self.currentCol = 0
def nextColumn(self, colspan=1):
"""Advance to next column, while returning the current column number
(generally only for internal use--called by addWidget)"""
self.currentCol += colspan
return self.currentCol-colspan
def nextCol(self, *args, **kargs):
"""Alias of nextColumn"""
return self.nextColumn(*args, **kargs)
def addLabel(self, text=' ', row=None, col=None, rowspan=1, colspan=1, **kargs):
"""
Create a QLabel with *text* and place it in the next available cell (or in the cell specified)
All extra keyword arguments are passed to QLabel().
Returns the created widget.
"""
text = QtGui.QLabel(text, **kargs)
self.addItem(text, row, col, rowspan, colspan)
return text
def addLayout(self, row=None, col=None, rowspan=1, colspan=1, **kargs):
"""
Create an empty LayoutWidget and place it in the next available cell (or in the cell specified)
All extra keyword arguments are passed to :func:`LayoutWidget.__init__ <pyqtgraph.LayoutWidget.__init__>`
Returns the created widget.
"""
layout = LayoutWidget(**kargs)
self.addItem(layout, row, col, rowspan, colspan)
return layout
def addWidget(self, item, row=None, col=None, rowspan=1, colspan=1):
"""
Add a widget to the layout and place it in the next available cell (or in the cell specified).
"""
if row is None:
row = self.currentRow
if col is None:
col = self.nextCol(colspan)
if row not in self.rows:
self.rows[row] = {}
self.rows[row][col] = item
self.items[item] = (row, col)
self.layout.addWidget(item, row, col, rowspan, colspan)
def getWidget(self, row, col):
"""Return the widget in (*row*, *col*)"""
return self.row[row][col]
#def itemIndex(self, item):
#for i in range(self.layout.count()):
#if self.layout.itemAt(i).graphicsItem() is item:
#return i
#raise Exception("Could not determine index of item " + str(item))
#def removeItem(self, item):
#"""Remove *item* from the layout."""
#ind = self.itemIndex(item)
#self.layout.removeAt(ind)
#self.scene().removeItem(item)
#r,c = self.items[item]
#del self.items[item]
#del self.rows[r][c]
#self.update()
#def clear(self):
#items = []
#for i in list(self.items.keys()):
#self.removeItem(i)
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