92 lines
3.2 KiB
Python
92 lines
3.2 KiB
Python
|
from pyqtgraph.Qt import QtGui, QtCore
|
||
|
|
import pyqtgraph.functions as fn
|
||
|
|
from GraphicsWidget import GraphicsWidget
|
||
|
|
|
||
|
|
|
||
|
|
__all__ = ['LabelItem']
|
||
|
|
|
||
|
|
class LabelItem(GraphicsWidget):
|
||
|
|
"""
|
||
|
|
GraphicsWidget displaying text.
|
||
|
|
Used mainly as axis labels, titles, etc.
|
||
|
|
|
||
|
|
Note: To display text inside a scaled view (ViewBox, PlotWidget, etc) use QGraphicsTextItem
|
||
|
|
with the flag ItemIgnoresTransformations set.
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
def __init__(self, text, parent=None, **args):
|
||
|
|
GraphicsWidget.__init__(self, parent)
|
||
|
|
self.item = QtGui.QGraphicsTextItem(self)
|
||
|
|
self.opts = args
|
||
|
|
if 'color' not in args:
|
||
|
|
self.opts['color'] = 'CCC'
|
||
|
|
else:
|
||
|
|
if isinstance(args['color'], QtGui.QColor):
|
||
|
|
self.opts['color'] = fn.colorStr(args['color'])[:6]
|
||
|
|
self.sizeHint = {}
|
||
|
|
self.setText(text)
|
||
|
|
|
||
|
|
|
||
|
|
def setAttr(self, attr, value):
|
||
|
|
"""Set default text properties. See setText() for accepted parameters."""
|
||
|
|
self.opts[attr] = value
|
||
|
|
|
||
|
|
def setText(self, text, **args):
|
||
|
|
"""Set the text and text properties in the label. Accepts optional arguments for auto-generating
|
||
|
|
a CSS style string:
|
||
|
|
color: string (example: 'CCFF00')
|
||
|
|
size: string (example: '8pt')
|
||
|
|
bold: boolean
|
||
|
|
italic: boolean
|
||
|
|
"""
|
||
|
|
self.text = text
|
||
|
|
opts = self.opts.copy()
|
||
|
|
for k in args:
|
||
|
|
opts[k] = args[k]
|
||
|
|
|
||
|
|
optlist = []
|
||
|
|
if 'color' in opts:
|
||
|
|
optlist.append('color: #' + opts['color'])
|
||
|
|
if 'size' in opts:
|
||
|
|
optlist.append('font-size: ' + opts['size'])
|
||
|
|
if 'bold' in opts and opts['bold'] in [True, False]:
|
||
|
|
optlist.append('font-weight: ' + {True:'bold', False:'normal'}[opts['bold']])
|
||
|
|
if 'italic' in opts and opts['italic'] in [True, False]:
|
||
|
|
optlist.append('font-style: ' + {True:'italic', False:'normal'}[opts['italic']])
|
||
|
|
full = "<span style='%s'>%s</span>" % ('; '.join(optlist), text)
|
||
|
|
#print full
|
||
|
|
self.item.setHtml(full)
|
||
|
|
self.updateMin()
|
||
|
|
|
||
|
|
def resizeEvent(self, ev):
|
||
|
|
c1 = self.boundingRect().center()
|
||
|
|
c2 = self.item.mapToParent(self.item.boundingRect().center()) # + self.item.pos()
|
||
|
|
dif = c1 - c2
|
||
|
|
self.item.moveBy(dif.x(), dif.y())
|
||
|
|
#print c1, c2, dif, self.item.pos()
|
||
|
|
|
||
|
|
def setAngle(self, angle):
|
||
|
|
self.angle = angle
|
||
|
|
self.item.resetTransform()
|
||
|
|
self.item.rotate(angle)
|
||
|
|
self.updateMin()
|
||
|
|
|
||
|
|
def updateMin(self):
|
||
|
|
bounds = self.item.mapRectToParent(self.item.boundingRect())
|
||
|
|
self.setMinimumWidth(bounds.width())
|
||
|
|
self.setMinimumHeight(bounds.height())
|
||
|
|
#print self.text, bounds.width(), bounds.height()
|
||
|
|
|
||
|
|
#self.sizeHint = {
|
||
|
|
#QtCore.Qt.MinimumSize: (bounds.width(), bounds.height()),
|
||
|
|
#QtCore.Qt.PreferredSize: (bounds.width(), bounds.height()),
|
||
|
|
#QtCore.Qt.MaximumSize: (bounds.width()*2, bounds.height()*2),
|
||
|
|
#QtCore.Qt.MinimumDescent: (0, 0) ##?? what is this?
|
||
|
|
#}
|
||
|
|
|
||
|
|
|
||
|
|
#def sizeHint(self, hint, constraint):
|
||
|
|
#return self.sizeHint[hint]
|
||
|
|
|