diff options
| -rw-r--r-- | Area.py | 62 |
1 files changed, 28 insertions, 34 deletions
@@ -1083,41 +1083,35 @@ class Area(Gtk.DrawingArea): """ - def proc_invert_color(temp_pix): - try: - import numpy - # HACK: This numpy version has a bug and breaks the - # 'invert_color' function - # http://bugs.sugarlabs.org/ticket/3509 - if numpy.__version__ == '1.6.1': - logging.warning('You have installed a version of numpy ' - '(1.6.1) that has a bug and can\'t be ' - 'used. Using string module instead ' - '(slower)') - raise ImportWarning - pix_manip2 = temp_pix.get_pixels_array() - pix_manip = numpy.ones(pix_manip2.shape, dtype=numpy.uint8) \ - * 255 - pix_manip2 = pix_manip - pix_manip2 - temp_pix = GdkPixbuf.Pixbuf.new_from_array(pix_manip2, - GdkPixbuf.Colorspace.RGB, 8) - except (ImportError, ImportWarning): - import string - a = temp_pix.get_pixels() - b = len(a) * ['\0'] - for i in range(len(a)): - b[i] = chr(255 - ord(a[i])) - buff = string.join(b, '') - temp_pix = GdkPixbuf.Pixbuf.new_from_data(buff, - temp_pix.get_colorspace(), - temp_pix.get_has_alpha(), - temp_pix.get_bits_per_sample(), - temp_pix.get_width(), - temp_pix.get_height(), - temp_pix.get_rowstride()) - return temp_pix + def internal_invert(self, old_cursor): + # load a array with the surface data + for array_type in ['H', 'I', 'L']: + pixels = array.array(array_type) + if pixels.itemsize == 4: + break + else: + raise AssertionError() + pixels.fromstring(self.drawing_canvas.get_data()) + + # process the pixels in the array + new_array = array.array(pixels.typecode, len(pixels) * [0]) + for i in range(len(pixels)): + new_array[i] = 0xffffffff - pixels[i] | 0xff000000 + + # create a updated drawing_canvas + width = self.drawing_canvas.get_width() + height = self.drawing_canvas.get_height() + self.drawing_canvas = cairo.ImageSurface.create_for_data(new_array, + cairo.FORMAT_ARGB32, width, height) + self.setup(width, height) - self._do_process(widget, proc_invert_color) + self.queue_draw() + self.enable_undo() + self.get_window().set_cursor(old_cursor) + + old_cursor = self.get_window().get_cursor() + self.get_window().set_cursor(Gdk.Cursor.new(Gdk.CursorType.WATCH)) + GObject.idle_add(internal_invert, self, old_cursor) def mirror(self, widget, horizontal=True): """Apply mirror horizontal/vertical effect. |