Upload bounding.py

bounding.py

@@ -0,0 +1,56 @@
+import tkinter as tk # this is in python 3.4. For python 2.x import Tkinter
+from PIL import Image, ImageTk
+
+
+
+class ExampleApp(tk.Tk):
+    def __init__(self):
+        tk.Tk.__init__(self)
+        self.x = self.y = 0
+        self.canvas = tk.Canvas(self, width=512, height=512, cursor="cross")
+        self.canvas.pack(side="top", fill="both", expand=True)
+        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._draw_image()
+
+
+    def _draw_image(self):
+         self.im = Image.open('./resource/lena.jpg')
+         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):
+        # save mouse drag start position
+        self.start_x = event.x
+        self.start_y = event.y
+
+        # create rectangle if not yet exist
+        #if not self.rect:
+        self.rect = self.canvas.create_rectangle(self.x, self.y, 1, 1, fill="black")
+
+    def on_move_press(self, event):
+        curX, curY = (event.x, event.y)
+
+        # expand rectangle as you drag the mouse
+        self.canvas.coords(self.rect, self.start_x, self.start_y, curX, curY)
+
+
+
+    def on_button_release(self, event):
+        pass
+
+
+if __name__ == "__main__":
+    app = ExampleApp()
+    app.mainloop()
+    app.mainloop()