import PIL.Image
import Image
import ImageTk
from Tkinter import *
class ExampleApp(Frame):
def __init__(self,master):
Frame.__init__(self,master=None)
self.x = self.y = 0
self.canvas = Canvas(self, cursor="cross")
self.sbarv=Scrollbar(self,orient=VERTICAL)
self.sbarh=Scrollbar(self,orient=HORIZONTAL)
self.sbarv.config(command=self.canvas.yview)
self.sbarh.config(command=self.canvas.xview)
self.canvas.config(yscrollcommand=self.sbarv.set)
self.canvas.config(xscrollcommand=self.sbarh.set)
self.canvas.grid(row=0,column=0,sticky=N+S+E+W)
self.sbarv.grid(row=0,column=1,stick=N+S)
self.sbarh.grid(row=1,column=0,sticky=E+W)
self.canvas.bind("<ButtonPress-1>", self.on_button_press)
self.canvas.bind("<B1-Motion>", self.on_move_press)
self.canvas.bind("<ButtonRelease-1>", self.on_button_release)
self.rect = None
self.start_x = None
self.start_y = None
self.im = PIL.Image.open("logo.png")
self.wazil,self.lard=self.im.size
self.canvas.config(scrollregion=(0,0,self.wazil,self.lard))
self.tk_im = ImageTk.PhotoImage(self.im)
self.canvas.create_image(0,0,anchor="nw",image=self.tk_im)
def on_button_press(self, event):
self.start_x = self.canvas.canvasx(event.x)
self.start_y = self.canvas.canvasy(event.y)
if not self.rect:
self.rect = self.canvas.create_rectangle(self.x, self.y, 1, 1, outline='red')
def on_move_press(self, event):
curX = self.canvas.canvasx(event.x)
curY = self.canvas.canvasy(event.y)
w, h = self.canvas.winfo_width(), self.canvas.winfo_height()
if event.x > 0.9*w:
self.canvas.xview_scroll(1, 'units')
elif event.x < 0.1*w:
self.canvas.xview_scroll(-1, 'units')
if event.y > 0.9*h:
self.canvas.yview_scroll(1, 'units')
elif event.y < 0.1*h:
self.canvas.yview_scroll(-1, 'units')
self.canvas.coords(self.rect, self.start_x, self.start_y, curX, curY)
def on_button_release(self, event):
pass
if __name__ == "__main__":
root=Tk()
app = ExampleApp(root)
app.pack()
root.mainloop()