Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 1 | from Tkinter import * |
| 2 | |
| 3 | class Test(Frame): |
| 4 | def printit(self): |
Collin Winter | 6f2df4d | 2007-07-17 20:59:35 +0000 | [diff] [blame^] | 5 | print("hi") |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 6 | |
| 7 | def createWidgets(self): |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 8 | self.QUIT = Button(self, text='QUIT', |
| 9 | background='red', |
| 10 | foreground='white', |
| 11 | height=3, |
| 12 | command=self.quit) |
| 13 | self.QUIT.pack(side=BOTTOM, fill=BOTH) |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 14 | |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 15 | self.canvasObject = Canvas(self, width="5i", height="5i") |
| 16 | self.canvasObject.pack(side=LEFT) |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 17 | |
| 18 | def mouseDown(self, event): |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 19 | # canvas x and y take the screen coords from the event and translate |
| 20 | # them into the coordinate system of the canvas object |
| 21 | self.startx = self.canvasObject.canvasx(event.x) |
| 22 | self.starty = self.canvasObject.canvasy(event.y) |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 23 | |
| 24 | def mouseMotion(self, event): |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 25 | # canvas x and y take the screen coords from the event and translate |
| 26 | # them into the coordinate system of the canvas object |
| 27 | x = self.canvasObject.canvasx(event.x) |
| 28 | y = self.canvasObject.canvasy(event.y) |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 29 | |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 30 | if (self.startx != event.x) and (self.starty != event.y) : |
| 31 | self.canvasObject.delete(self.rubberbandBox) |
| 32 | self.rubberbandBox = self.canvasObject.create_rectangle( |
| 33 | self.startx, self.starty, x, y) |
| 34 | # this flushes the output, making sure that |
| 35 | # the rectangle makes it to the screen |
| 36 | # before the next event is handled |
| 37 | self.update_idletasks() |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 38 | |
| 39 | def mouseUp(self, event): |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 40 | self.canvasObject.delete(self.rubberbandBox) |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 41 | |
Tim Peters | 182b5ac | 2004-07-18 06:16:08 +0000 | [diff] [blame] | 42 | def __init__(self, master=None): |
| 43 | Frame.__init__(self, master) |
| 44 | Pack.config(self) |
| 45 | self.createWidgets() |
| 46 | |
| 47 | # this is a "tagOrId" for the rectangle we draw on the canvas |
| 48 | self.rubberbandBox = None |
| 49 | |
| 50 | # and the bindings that make it work.. |
| 51 | Widget.bind(self.canvasObject, "<Button-1>", self.mouseDown) |
| 52 | Widget.bind(self.canvasObject, "<Button1-Motion>", self.mouseMotion) |
| 53 | Widget.bind(self.canvasObject, "<Button1-ButtonRelease>", self.mouseUp) |
Guido van Rossum | 89cb67b | 1996-07-30 18:57:18 +0000 | [diff] [blame] | 54 | |
Guido van Rossum | 35820f7 | 1994-10-07 09:55:26 +0000 | [diff] [blame] | 55 | |
| 56 | test = Test() |
| 57 | |
| 58 | test.mainloop() |