本文整理汇总了Python中gaphas.canvas.Canvas.require_update方法的典型用法代码示例。如果您正苦于以下问题：Python Canvas.require_update方法的具体用法？Python Canvas.require_update怎么用？Python Canvas.require_update使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类gaphas.canvas.Canvas的用法示例。
在下文中一共展示了Canvas.require_update方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_get_item_at_point
# 需要导入模块: from gaphas.canvas import Canvas [as 别名]
# 或者: from gaphas.canvas.Canvas import require_update [as 别名]
def test_get_item_at_point(self):
"""
Hover tool only reacts on motion-notify events
"""
canvas = Canvas()
view = GtkView(canvas)
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.add(view)
window.show_all()
box = Box()
canvas.add(box)
# No gtk main loop, so updates occur instantly
assert not canvas.require_update()
box.width = 50
box.height = 50
# Process pending (expose) events, which cause the canvas to be drawn.
while gtk.events_pending():
gtk.main_iteration()
assert len(view._qtree._ids) == 1
assert not view._qtree._bucket.bounds == (0, 0, 0, 0), view._qtree._bucket.bounds
assert view.get_item_at_point((10, 10)) is box
assert view.get_item_at_point((60, 10)) is None
window.destroy()示例2: test_item_removal
# 需要导入模块: from gaphas.canvas import Canvas [as 别名]
# 或者: from gaphas.canvas.Canvas import require_update [as 别名]
def test_item_removal(self):
canvas = Canvas()
view = GtkView(canvas)
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.add(view)
window.show_all()
box = Box()
canvas.add(box)
# No gtk main loop, so updates occur instantly
assert not canvas.require_update()
# Process pending (expose) events, which cause the canvas to be drawn.
while gtk.events_pending():
gtk.main_iteration()
assert len(canvas.get_all_items()) == len(view._qtree)
view.focused_item = box
canvas.remove(box)
assert len(canvas.get_all_items()) == 0
assert len(view._qtree) == 0
window.destroy()