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# This is PyQt specific so force the toolkit selection.
from traits.etsconfig.api import ETSConfig
ETSConfig.toolkit = 'qt4.qpainter'
from numpy import array
import sys
try:
from pyface.qt import QtGui
except ImportError:
raise Exception('PyQt4 needs to be installed to run this example')
from enable.example_canvas import Canvas
class MyCanvas(Canvas):
def do_draw(self, gc):
w = gc.width()
h = gc.height()
# Draw a red gradient filled box with green border
gc.rect(w/4, h/4, w/2, h/2)
gc.set_line_width(5.0)
gc.set_stroke_color((0.0, 1.0, 0.0, 1.0))
start = array([0.0, 1.0, 0.0, 0.0, 1.0])
end = array([1.0, 1.0, 1.0, 1.0, 1.0])
gc.radial_gradient(w/4, h/4, 200, w/4+100, h/4+100,
array([start, end]), 'reflect')
gc.draw_path()
# draw a black rect with rounded corners
r = max(1, min(w,h)/10)
gc.set_line_width(2.0)
gc.set_stroke_color((0.0, 0.0, 0.0, 1.0))
gc.move_to(w/3, h/2)
gc.arc_to(w/3, 2*h/3,
w/2, 2*h/3,
r)
gc.arc_to(2*w/3, 2*h/3,
2*w/3, h/2,
r)
gc.arc_to(2*w/3, h/3,
w/2, h/3,
r)
gc.arc_to(w/3, h/3,
w/3, h/2,
r)
gc.line_to(w/3, h/2)
gc.stroke_path()
return
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
w = MyCanvas()
w.control.resize(500, 500)
w.control.setWindowTitle("Simple Kiva.qt4 example")
w.control.show()
app.exec_()
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