def __init__(self):
self.canvas = Canvas()
self.children = []
self.size = [0,0]
self.position = [0,0]
self.focusable = True
self.hasFocus = False
self.childWithFocus = None
self.parent = None
self.visible = True
self.foreground = Canvas.COLOR_WHITE
self.background = Canvas.COLOR_BLACK
class Drawable(object):
def __init__(self):
self.canvas = Canvas()
self.children = []
self.size = [0,0]
self.position = [0,0]
self.focusable = True
self.hasFocus = False
self.childWithFocus = None
self.parent = None
self.visible = True
self.foreground = Canvas.COLOR_WHITE
self.background = Canvas.COLOR_BLACK
def addChild(self,child):
child.parent = self
self.canvas.addChild(child.canvas)
self.children.append(child)
def onRepaint(self, canvas):
pass
def onFocus(self):
self.repaint()
pass
def onCommand(self,command):
print "implement me", self
def setBackground(self, color):
self.background = color
def setForeground(self, color):
self.foreground = color
def paint(self, canvas):
canvas.size = self.size
canvas.position = self.position
canvas.clearBuffer()
canvas.setForeground(self.foreground)
canvas.setBackground(self.background)
def repaint(self):
self.paint(self.canvas)
self.onRepaint(self.canvas)
for child in self.children:
if child.visible:
child.repaint()
def handleCommand(self,command):
if self.visible:
if self.hasFocus:
self.onCommand(command)
else:
for child in self.children:
child.handleCommand(command)
def removeFocus(self):
if self.hasFocus:
self.hasFocus = False
self.onFocus()
for child in self.children:
child.removeFocus()
self.childWithFocus = None
def giveFocus(self):
print 'p'
if not self.isVisible():
return
self.getRoot().removeFocus()
self.hasFocus = True
da = self
while da:
if not da.parent:
break;
print da
da.parent.childWithFocus = da
da = da.parent
def isVisible(self):
if self.parent:
if self.parent.visible:
return self.parent.isVisible()
else:
return False
else:
return self.visible
def getRoot(self):
if self.parent:
return self.parent.getRoot()
else:
return self
def cycleFocus(self):
if not self.visible:
self.removeFocus()
return False
if self.focusable:
if self.childWithFocus == None and not self.hasFocus:
self.hasFocus = True
self.onFocus()
return True
else:
self.hasFocus = False
self.onFocus()
if len(self.children) > 0:
if self.childWithFocus == None:
self.childWithFocus = self.children[0]
while not self.childWithFocus.cycleFocus():
ci = self.children.index(self.childWithFocus)
if ci + 1 >= len(self.children):
self.childWithFocus = None
return
else:
self.childWithFocus = self.children[ci+1]
return self.childWithFocus != None
