ImageTk.PhotoImage vs. Tkinter.PhotoImage

[Les Schaffer]

John Carter said:

> I've simply used the crop method, so I would do something like

yes. i did a crop followed by a resize.....

    def releaseZoom(self, event):
        xy = self.canvas.canvasx(event.x), self.canvas.canvasy(event.y)
	box = ( self.anchorZoom[0], self.anchorZoom[1], xy[0], xy[1] )
	x1, y1, x2, y2 = box
	img = self.image.crop( box )

	newW = self.zoom * (x2 - x1)
	newH = self.zoom * (y2 - y1)

	img = img.resize( (newH, newH), Image.BILINEAR )
	newRoot = Tkinter.Toplevel()
	newRoot.title("Zoom")
	newView = Viewer(newRoot, img)
	newView.pack()

Viewer does a setimage:

    def setimage(self, image):
        self.canvas.delete("all")
        self.image = image
        self.photo = ImageTk.PhotoImage(image)
        self.canvas.create_image(0, 0, image=self.photo, anchor=Tkinter.NW)
        self.canvas.config(width=image.size[0], height=image.size[1])


Frederick Lundh said on the IMAGE-SIG that a transform would run
faster. havent tried it yet.

-- 
____        Les Schaffer              ___| --->> Engineering R&D <<---
Theoretical & Applied Mechanics          |  Designspring, Inc. 
Center for Radiophysics & Space Research |  http://www.designspring.com/
Cornell Univ.  schaffer at tam.cornell.edu  |  les at designspring.com