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from enable.api import Container, Label, NativeScrollBar, Window
from enable.example_support import DemoFrame, demo_main
class MyFrame(DemoFrame):
def _create_window(self):
label = Label(text="h:\nv:", font="modern 16",
position=[20, 50],
bounds=[100, 100],
bgcolor = "red",
color = "white",
hjustify = "center",
vjustify = "center")
vscroll = NativeScrollBar(orientation = "vertical",
bounds = [15, label.height],
position = [label.x2, label.y],
range = (0, 100.0, 10.0, 1.0),
enabled = True)
vscroll.on_trait_change(self._update_vscroll, "scroll_position")
hscroll = NativeScrollBar(orientation = "horizontal",
bounds = [label.width, 15],
position = [label.x, label.y-15],
range = (0, 100.0, 10.0, 1.0),
enabled = True)
hscroll.on_trait_change(self._update_hscroll, "scroll_position")
container = Container(bounds=[200,200], border_visible=True,
padding=15)
container.add(label, hscroll, vscroll)
container.on_trait_change(self._update_layout, "bounds")
container.on_trait_change(self._update_layout, "bounds_items")
self.label = label
self.hscroll = hscroll
self.vscroll = vscroll
return Window(self, -1, component=container)
def _update_hscroll(self):
text = self.label.text.split("\n")
text[0] = "h: " + str(self.hscroll.scroll_position)
self.label.text = "\n".join(text)
def _update_vscroll(self):
text = self.label.text.split("\n")
text[1] = "v: " + str(self.vscroll.scroll_position)
self.label.text = "\n".join(text)
def _update_layout(self):
self.vscroll._widget_moved = True
self.hscroll._widget_moved = True
if __name__ == "__main__":
# Save demo so that it doesn't get garbage collected when run within
# existing event loop (i.e. from ipython).
demo = demo_main(MyFrame, title="Scrollbar demo", size=(250,250))
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