Demo.applet.deprecated.CoordinatesDemo.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
"""A rough translation of an example from the Java Tutorial
http://java.sun.com/docs/books/tutorial/
This example shows how to do very simple Canvas Drawing
"""
from java import applet, awt
from pawt import GridBag
class CoordinatesDemo(applet.Applet):
def init(self):
bag = GridBag(self)
self.framedArea = FramedArea(self)
bag.addRow(self.framedArea, weighty=1.0, fill='BOTH')
self.label = awt.Label('Click within the framed area')
bag.addRow(self.label, weightx=1.0, weighty=0.0, fill='HORIZONTAL')
def updateLabel(self, point):
text = 'Click occurred at coordinate (%d, %d).'
self.label.text = text % (point.x, point.y)
class FramedArea(awt.Panel):
def __init__(self, controller):
self.background = awt.Color.lightGray
self.setLayout(awt.GridLayout(1,0))
self.add(CoordinateArea(controller))
def getInsets(self):
return awt.Insets(4,4,5,5)
def paint(self, g):
d = self.size
g.color = self.background
g.draw3DRect(0, 0, d.width-1, d.height-1, 1)
g.draw3DRect(3, 3, d.width-7, d.height-7, 1)
class CoordinateArea(awt.Canvas):
def __init__(self, controller):
self.mousePressed = self.push
self.controller = controller
def push(self, e):
try:
self.point.x = e.x
self.point.y = e.y
except AttributeError:
self.point = awt.Point(e.x, e.y)
self.repaint()
def paint(self, g):
if hasattr(self, 'point'):
self.controller.updateLabel(self.point)
g.fillRect(self.point.x-1, self.point.y-1, 2, 2)
if __name__ == '__main__':
import pawt
pawt.test(CoordinatesDemo(), size=(300, 200))