def zoom_out(self, *args):
if self.zoom > 1:
self.zoom *= .5
self.offset = (self.offset - self.width / 2 ) * .5
self.calc_points()
self.draw_points()
from pageloader import get_widget
get_widget('lbl_zoom').text = 'x' + str(self.zoom)
def zoom_in(self, *args):
if self.zoom < 32:
self.zoom *= 2.
self.offset = self.offset * 2. + self.width / 2
self.calc_points()
self.draw_points()
from pageloader import get_widget
get_widget('lbl_zoom').text = 'x' + str(self.zoom)