diff options
Diffstat (limited to 'Demo/tkinter/matt/canvas-gridding.py')
| -rw-r--r-- | Demo/tkinter/matt/canvas-gridding.py | 80 |
1 files changed, 40 insertions, 40 deletions
diff --git a/Demo/tkinter/matt/canvas-gridding.py b/Demo/tkinter/matt/canvas-gridding.py index b200ea4..3c52b91 100644 --- a/Demo/tkinter/matt/canvas-gridding.py +++ b/Demo/tkinter/matt/canvas-gridding.py @@ -1,60 +1,60 @@ from Tkinter import * -# this is the same as simple-demo-1.py, but uses -# subclassing. -# note that there is no explicit call to start Tk. -# Tkinter is smart enough to start the system if it's not already going. +# this is the same as simple-demo-1.py, but uses +# subclassing. +# note that there is no explicit call to start Tk. +# Tkinter is smart enough to start the system if it's not already going. class Test(Frame): def printit(self): - print "hi" + print "hi" def createWidgets(self): - self.QUIT = Button(self, text='QUIT', - background='red', - foreground='white', - height=3, - command=self.quit) - self.QUIT.pack(side=BOTTOM, fill=BOTH) + self.QUIT = Button(self, text='QUIT', + background='red', + foreground='white', + height=3, + command=self.quit) + self.QUIT.pack(side=BOTTOM, fill=BOTH) - self.canvasObject = Canvas(self, width="5i", height="5i") - self.canvasObject.pack(side=LEFT) + self.canvasObject = Canvas(self, width="5i", height="5i") + self.canvasObject.pack(side=LEFT) def mouseDown(self, event): - # canvas x and y take the screen coords from the event and translate - # them into the coordinate system of the canvas object - self.startx = self.canvasObject.canvasx(event.x, self.griddingSize) - self.starty = self.canvasObject.canvasy(event.y, self.griddingSize) + # canvas x and y take the screen coords from the event and translate + # them into the coordinate system of the canvas object + self.startx = self.canvasObject.canvasx(event.x, self.griddingSize) + self.starty = self.canvasObject.canvasy(event.y, self.griddingSize) def mouseMotion(self, event): - # canvas x and y take the screen coords from the event and translate - # them into the coordinate system of the canvas object - x = self.canvasObject.canvasx(event.x, self.griddingSize) - y = self.canvasObject.canvasy(event.y, self.griddingSize) - - if (self.startx != event.x) and (self.starty != event.y) : - self.canvasObject.delete(self.rubberbandBox) - self.rubberbandBox = self.canvasObject.create_rectangle( - self.startx, self.starty, x, y) - # this flushes the output, making sure that - # the rectangle makes it to the screen - # before the next event is handled - self.update_idletasks() + # canvas x and y take the screen coords from the event and translate + # them into the coordinate system of the canvas object + x = self.canvasObject.canvasx(event.x, self.griddingSize) + y = self.canvasObject.canvasy(event.y, self.griddingSize) + + if (self.startx != event.x) and (self.starty != event.y) : + self.canvasObject.delete(self.rubberbandBox) + self.rubberbandBox = self.canvasObject.create_rectangle( + self.startx, self.starty, x, y) + # this flushes the output, making sure that + # the rectangle makes it to the screen + # before the next event is handled + self.update_idletasks() def __init__(self, master=None): - Frame.__init__(self, master) - Pack.config(self) - self.createWidgets() + Frame.__init__(self, master) + Pack.config(self) + self.createWidgets() - # this is a "tagOrId" for the rectangle we draw on the canvas - self.rubberbandBox = None + # this is a "tagOrId" for the rectangle we draw on the canvas + self.rubberbandBox = None - # this is the size of the gridding squares - self.griddingSize = 50 + # this is the size of the gridding squares + self.griddingSize = 50 + + Widget.bind(self.canvasObject, "<Button-1>", self.mouseDown) + Widget.bind(self.canvasObject, "<Button1-Motion>", self.mouseMotion) - Widget.bind(self.canvasObject, "<Button-1>", self.mouseDown) - Widget.bind(self.canvasObject, "<Button1-Motion>", self.mouseMotion) - test = Test() |