--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Demo/tkinter/matt/printing-coords-of-items.py Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,61 @@
+from Tkinter import *
+
+# this file demonstrates the creation of widgets as part of a canvas object
+
+class Test(Frame):
+ ###################################################################
+ ###### Event callbacks for THE CANVAS (not the stuff drawn on it)
+ ###################################################################
+ def mouseDown(self, event):
+ # see if we're inside a dot. If we are, it
+ # gets tagged as CURRENT for free by tk.
+
+ if not event.widget.find_withtag(CURRENT):
+ # there is no dot here, so we can make one,
+ # and bind some interesting behavior to it.
+ # ------
+ # create a dot, and mark it as current
+ fred = self.draw.create_oval(
+ event.x - 10, event.y -10, event.x +10, event.y + 10,
+ fill="green")
+ self.draw.tag_bind(fred, "<Enter>", self.mouseEnter)
+ self.draw.tag_bind(fred, "<Leave>", self.mouseLeave)
+ self.lastx = event.x
+ self.lasty = event.y
+
+ def mouseMove(self, event):
+ self.draw.move(CURRENT, event.x - self.lastx, event.y - self.lasty)
+ self.lastx = event.x
+ self.lasty = event.y
+
+ ###################################################################
+ ###### Event callbacks for canvas ITEMS (stuff drawn on the canvas)
+ ###################################################################
+ def mouseEnter(self, event):
+ # the "current" tag is applied to the object the cursor is over.
+ # this happens automatically.
+ self.draw.itemconfig(CURRENT, fill="red")
+ print self.draw.coords(CURRENT)
+
+ def mouseLeave(self, event):
+ # the "current" tag is applied to the object the cursor is over.
+ # this happens automatically.
+ self.draw.itemconfig(CURRENT, fill="blue")
+
+ def createWidgets(self):
+ self.QUIT = Button(self, text='QUIT', foreground='red',
+ command=self.quit)
+ self.QUIT.pack(side=LEFT, fill=BOTH)
+ self.draw = Canvas(self, width="5i", height="5i")
+ self.draw.pack(side=LEFT)
+
+ Widget.bind(self.draw, "<1>", self.mouseDown)
+ Widget.bind(self.draw, "<B1-Motion>", self.mouseMove)
+
+ def __init__(self, master=None):
+ Frame.__init__(self, master)
+ Pack.config(self)
+ self.createWidgets()
+
+test = Test()
+test.mainloop()