author | Shabe Razvi <shaber@symbian.org> |
Wed, 21 Oct 2009 13:56:56 +0100 | |
changeset 17 | c506b18dc03f |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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from Tkinter import * |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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Initial QEMU (symbian-qemu-0.9.1-12) import
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# this file demonstrates the movement of a single canvas item under mouse control |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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class Test(Frame): |
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################################################################### |
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###### Event callbacks for THE CANVAS (not the stuff drawn on it) |
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################################################################### |
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def mouseDown(self, event): |
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# remember where the mouse went down |
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self.lastx = event.x |
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self.lasty = event.y |
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def mouseMove(self, event): |
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# whatever the mouse is over gets tagged as CURRENT for free by tk. |
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self.draw.move(CURRENT, event.x - self.lastx, event.y - self.lasty) |
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self.lastx = event.x |
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self.lasty = event.y |
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################################################################### |
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###### Event callbacks for canvas ITEMS (stuff drawn on the canvas) |
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################################################################### |
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def mouseEnter(self, event): |
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# the CURRENT tag is applied to the object the cursor is over. |
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# this happens automatically. |
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self.draw.itemconfig(CURRENT, fill="red") |
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def mouseLeave(self, event): |
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# the CURRENT tag is applied to the object the cursor is over. |
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# this happens automatically. |
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self.draw.itemconfig(CURRENT, fill="blue") |
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def createWidgets(self): |
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self.QUIT = Button(self, text='QUIT', foreground='red', |
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command=self.quit) |
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self.QUIT.pack(side=LEFT, fill=BOTH) |
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self.draw = Canvas(self, width="5i", height="5i") |
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self.draw.pack(side=LEFT) |
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fred = self.draw.create_oval(0, 0, 20, 20, |
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fill="green", tags="selected") |
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self.draw.tag_bind(fred, "<Any-Enter>", self.mouseEnter) |
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self.draw.tag_bind(fred, "<Any-Leave>", self.mouseLeave) |
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Widget.bind(self.draw, "<1>", self.mouseDown) |
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Widget.bind(self.draw, "<B1-Motion>", self.mouseMove) |
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def __init__(self, master=None): |
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Frame.__init__(self, master) |
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Pack.config(self) |
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self.createWidgets() |
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test = Test() |
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test.mainloop() |