绘制图像到gtk.DrawingArea？

Question

I'm writing a PyGtk paint program based on the basic tutorial found here .

Is there any way to add an image to the drawing area so that you can still draw over the image? Like a stamp, or an imported photo for example. I've tried adding a gtk.Image() but gtk.DrawingArea object has no attribute add .

self.window = gtk.Window((gtk.WINDOW_TOPLEVEL))
self.window.set_title ("Canvas")
self.window.set_position(gtk.WIN_POS_CENTER)
hbox = gtk.HBox(False, 0)
self.window.add(hbox)
self.window.set_resizable(False)

# Create the drawing area
drawing_area = gtk.DrawingArea()
drawing_area.set_size_request(screenWidth-350, screenHeight-100)
hbox.pack_start(drawing_area, True, True, 0)
drawing_area.show()

Answer 1

You have to draw the image (as a gtk.gdk.Pixbuf , not gtk.Image ) onto the backing pixmap yourself using gtk.gdk.Drawable.draw_pixbuf() . Only container widgets (widgets that can contain other widgets) have an add() method, and gtk.DrawingArea is not one.

pixbuf = gtk.gdk.pixbuf_new_from_file(image_filename) #one way to load a pixbuf
pixmap.draw_pixbuf(None, pixbuf, 0, 0, x, y, -1, -1, gtk.gdk.RGB_DITHER_NONE, 0, 0)