56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
Demonstrates the appearance / interactivity of GradientWidget
|
|
(without actually doing anything useful with it)
|
|
|
|
"""
|
|
import initExample ## Add path to library (just for examples; you do not need this)
|
|
|
|
import pyqtgraph as pg
|
|
from pyqtgraph.Qt import QtCore, QtGui
|
|
import numpy as np
|
|
|
|
|
|
|
|
app = QtGui.QApplication([])
|
|
w = QtGui.QMainWindow()
|
|
w.show()
|
|
w.setWindowTitle('pyqtgraph example: GradientWidget')
|
|
w.setGeometry(10, 50, 400, 400)
|
|
cw = QtGui.QWidget()
|
|
w.setCentralWidget(cw)
|
|
|
|
l = QtGui.QGridLayout()
|
|
l.setSpacing(0)
|
|
cw.setLayout(l)
|
|
|
|
w1 = pg.GradientWidget(orientation='top')
|
|
w2 = pg.GradientWidget(orientation='right', allowAdd=False)
|
|
#w2.setTickColor(1, QtGui.QColor(255,255,255))
|
|
w3 = pg.GradientWidget(orientation='bottom')
|
|
w4 = pg.GradientWidget(orientation='left')
|
|
w4.loadPreset('spectrum')
|
|
label = QtGui.QLabel("""
|
|
- Click a triangle to change its color
|
|
- Drag triangles to move
|
|
- Click in an empty area to add a new color
|
|
(adding is disabled for the right-side widget)
|
|
- Right click a triangle to remove
|
|
""")
|
|
|
|
l.addWidget(w1, 0, 1)
|
|
l.addWidget(w2, 1, 2)
|
|
l.addWidget(w3, 2, 1)
|
|
l.addWidget(w4, 1, 0)
|
|
l.addWidget(label, 1, 1)
|
|
|
|
|
|
## 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_()
|
|
|
|
|
|
|