def test_viewport_container(self):
""" Tests event handling of viewports (scaling and translation) """
comp = TestComponent(position=[20, 20])
container = TestContainer(bounds=[100, 100], position=[50, 50])
container.add(comp)
viewport = Viewport(component=container,
bounds=[400, 400],
position=[30, 30])
# Test unscaled event
event = BasicEvent(x=105, y=105)
viewport.dispatch(event, "left_down")
self.assertTrue(container.last_event.x == 75)
self.assertTrue(container.last_event.y == 75)
self.assertTrue(comp.last_event.x == 25)
self.assertTrue(comp.last_event.y == 25)
# Translate the viewport's view_position
container.last_event = None
comp.last_event = None
viewport.view_position = [-10, -10]
event = BasicEvent(x=115, y=115)
viewport.dispatch(event, "left_down")
self.assertTrue(container.last_event.x == 75)
self.assertTrue(container.last_event.y == 75)
self.assertTrue(comp.last_event.x == 25)
self.assertTrue(comp.last_event.y == 25)
# Do a zoom
container.last_event = None
comp.last_event = None
# Zoom in by a factor of 2, so view an area that is 200x200.
viewport.zoom = 2.0
viewport.enable_zoom = True
viewport.view_position = [-50, -50]
viewport.view_bounds = [200, 200]
event = BasicEvent(x=280, y=280)
viewport.dispatch(event, "left_down")
self.assertTrue(container.last_event.x == 75)
self.assertTrue(container.last_event.y == 75)
self.assertTrue(comp.last_event.x == 25)
self.assertTrue(comp.last_event.y == 25)
return
def test_viewport_container(self):
""" Tests event handling of viewports (scaling and translation) """
comp = TestComponent(position=[20,20])
container = TestContainer(bounds=[100,100], position=[50,50])
container.add(comp)
viewport = Viewport(component=container, bounds=[400,400],
position=[30,30])
# Test unscaled event
event = BasicEvent(x=105, y=105)
viewport.dispatch(event, "left_down")
self.assertTrue(container.last_event.x == 75)
self.assertTrue(container.last_event.y == 75)
self.assertTrue(comp.last_event.x == 25)
self.assertTrue(comp.last_event.y == 25)
# Translate the viewport's view_position
container.last_event = None
comp.last_event = None
viewport.view_position = [-10,-10]
event = BasicEvent(x=115, y=115)
viewport.dispatch(event, "left_down")
self.assertTrue(container.last_event.x == 75)
self.assertTrue(container.last_event.y == 75)
self.assertTrue(comp.last_event.x == 25)
self.assertTrue(comp.last_event.y == 25)
# Do a zoom
container.last_event = None
comp.last_event = None
# Zoom in by a factor of 2, so view an area that is 200x200.
viewport.zoom = 2.0
viewport.enable_zoom = True
viewport.view_position = [-50, -50]
viewport.view_bounds = [200, 200]
event = BasicEvent(x=280, y=280)
viewport.dispatch(event, "left_down")
self.assertTrue(container.last_event.x == 75)
self.assertTrue(container.last_event.y == 75)
self.assertTrue(comp.last_event.x == 25)
self.assertTrue(comp.last_event.y == 25)
return
def _create_window(self):
self.canvas = Canvas(bgcolor='lightgrey',
draw_axes=True,
fit_window = True)
sys,cat = load_system("datsun truck.repo")
# sys,cat = load_system()
# find_technologies(sys)
self.make_components(sys)
viewport = Viewport(component=self.canvas,enable_zoom=True)
max_x = 0
max_y = 0
for art in sys.artifacts:
try:
if art.drawable.x2 > max_x:
max_x = art.drawable.x2
if art.drawable.y2 > max_y:
max_y = art.drawable.y2
except AttributeError:
pass
# max_x = max([art.drawable.x2 for art in sys.artifacts])
# max_y = max([art.drawable.y2 for art in sys.artifacts])
viewport.view_position = [max_x/2,max_y/2]
viewport.view_bounds = self.canvas.bounds
viewport.zoom = 0.3
viewport.zoom_tool.wheel_zoom_step = 1
viewport.tools.append(ViewportPanTool(viewport))
self.viewport = viewport
self.fit_window()
return Window(self, -1, component=viewport)
