def test_vertical_scroll_doesnt_depend_on_lines_rendering(self):
# TextInput.on_touch_down was checking the possibility to scroll_up
# using the positions of the rendered lines' rects. These positions
# don't change when the lines are skipped (e.g. during fast scroll
# or ctrl+cursor_home) which lead to scroll freeze
ti = self.make_scrollable_text_input()
# move viewport to the first line
ti.do_cursor_movement('cursor_home', control=True)
self.advance_frames(1)
assert ti._visible_lines_range == (0, 10)
from kivy.base import EventLoop
win = EventLoop.window
# slowly scroll to the last line to render all lines at least once
for _ in range(30): # little overscroll is important for detection
touch = UTMotionEvent("unittest", next(touch_id), {
"x": ti.center_x / float(win.width),
"y": ti.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrollup'
EventLoop.post_dispatch_input("begin", touch)
EventLoop.post_dispatch_input("end", touch)
self.advance_frames(1)
assert ti._visible_lines_range == (20, 30)
# jump to the first line again
ti.do_cursor_movement('cursor_home', control=True)
# temp fix: only change of cursor position triggers update as for now
ti._trigger_update_graphics()
self.advance_frames(1)
assert ti._visible_lines_range == (0, 10)
# scrolling up should work now
touch = UTMotionEvent("unittest", next(touch_id), {
"x": ti.center_x / float(win.width),
"y": ti.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrollup'
EventLoop.post_dispatch_input("begin", touch)
EventLoop.post_dispatch_input("end", touch)
self.advance_frames(1)
assert ti._visible_lines_range == (1, 11)
def test_scroll_doesnt_move_cursor(self):
ti = self.make_scrollable_text_input()
from kivy.base import EventLoop
win = EventLoop.window
touch = UTMotionEvent("unittest", next(touch_id), {
"x": ti.center_x / float(win.width),
"y": ti.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrolldown'
prev_cursor = ti.cursor
assert ti._visible_lines_range == (20, 30)
EventLoop.post_dispatch_input("begin", touch)
EventLoop.post_dispatch_input("end", touch)
self.advance_frames(1)
assert ti._visible_lines_range == (19, 29)
assert ti.cursor == prev_cursor
def test_scroll_doesnt_move_cursor(self):
ti = self.make_scrollable_text_input()
from kivy.base import EventLoop
win = EventLoop.window
touch = UTMotionEvent("unittest", next(touch_id), {
"x": ti.center_x / float(win.width),
"y": ti.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrolldown'
prev_cursor = ti.cursor
assert ti._visible_lines_range == (20, 30)
EventLoop.post_dispatch_input("begin", touch)
EventLoop.post_dispatch_input("end", touch)
self.advance_frames(1)
assert ti._visible_lines_range == (19, 29)
assert ti.cursor == prev_cursor
def process_points(self, scroll, points):
win = EventLoop.window
dt = 0.02
for point in points:
if DEBUG:
print('point:', point, scroll.scroll_x, scroll.scroll_y)
Clock.schedule_once(lambda *dt: sleep(0.5), 0)
self.render(scroll)
x, y, nx, ny, pos_x, pos_y, border_check = point
scroll.bar_pos = (pos_x, pos_y)
touch = UTMotionEvent("unittest", next(touch_id), {
"x": x / float(win.width),
"y": y / float(win.height),
})
# we start with the default top-left corner
self.assertAlmostEqual(scroll.scroll_x, 0.0, delta=dt)
self.assertAlmostEqual(scroll.scroll_y, 1.0, delta=dt)
# check the collision with the margin empty area
if border_check:
EventLoop.post_dispatch_input("begin", touch)
touch.move({
"x": nx / float(win.width),
"y": ny / float(win.height)
})
EventLoop.post_dispatch_input("update", touch)
EventLoop.post_dispatch_input("end", touch)
self.assertAlmostEqual(scroll.scroll_x, 0.0, delta=dt)
self.assertAlmostEqual(scroll.scroll_y, 1.0, delta=dt)
return
EventLoop.post_dispatch_input("begin", touch)
touch.move({
"x": nx / float(win.width),
"y": ny / float(win.height)
})
EventLoop.post_dispatch_input("update", touch)
EventLoop.post_dispatch_input("end", touch)
if DEBUG:
print(scroll.scroll_x, scroll.scroll_y)
Clock.schedule_once(lambda *dt: sleep(0.5), 0)
self.render(scroll)
# check the scroll position
self.assertAlmostEqual(scroll.scroll_x,
0.0 if x == nx else 1.0,
delta=dt)
self.assertAlmostEqual(scroll.scroll_y,
1.0 if y == ny else 0.0,
delta=dt)
# reset scroll to original state
scroll.scroll_x = 0.0
scroll.scroll_y = 1.0
def test_smooth_scroll_end(self):
EventLoop.ensure_window()
win = EventLoop.window
grid = _TestGrid()
scroll = ScrollView(smooth_scroll_end=10)
assert scroll.smooth_scroll_end == 10
scroll.add_widget(grid)
# XXX this shouldn't be needed, but previous tests apparently
# don't cleanup
while win.children:
win.remove_widget(win.children[0])
win.add_widget(scroll)
# get widgets ready
EventLoop.idle()
e = scroll.effect_y
assert e.velocity == 0
touch = UTMotionEvent(
"unittest", next(touch_id), {
"x": scroll.center_x / float(win.width),
"y": scroll.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrollup'
EventLoop.post_dispatch_input("begin", touch)
# EventLoop.post_dispatch_input("update", touch)
assert e.velocity == 10 * scroll.scroll_wheel_distance
EventLoop.idle()
assert 0 < e.velocity < 10 * scroll.scroll_wheel_distance
EventLoop.post_dispatch_input("end", touch)
EventLoop.idle()
assert 0 < e.velocity < 10 * scroll.scroll_wheel_distance
# wait for velocity to die off
while e.velocity:
EventLoop.idle()
touch = UTMotionEvent(
"unittest", next(touch_id), {
"x": scroll.center_x / float(win.width),
"y": scroll.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrolldown'
EventLoop.post_dispatch_input("begin", touch)
# EventLoop.post_dispatch_input("update", touch)
assert e.velocity == -10 * scroll.scroll_wheel_distance
EventLoop.idle()
assert 0 > e.velocity > -10 * scroll.scroll_wheel_distance
EventLoop.post_dispatch_input("end", touch)
EventLoop.idle()
assert 0 > e.velocity > -10 * scroll.scroll_wheel_distance
def test_vertical_scroll_doesnt_depend_on_lines_rendering(self):
# TextInput.on_touch_down was checking the possibility to scroll_up
# using the positions of the rendered lines' rects. These positions
# don't change when the lines are skipped (e.g. during fast scroll
# or ctrl+cursor_home) which lead to scroll freeze
ti = self.make_scrollable_text_input()
# move viewport to the first line
ti.do_cursor_movement('cursor_home', control=True)
self.advance_frames(1)
assert ti._visible_lines_range == (0, 10)
from kivy.base import EventLoop
win = EventLoop.window
# slowly scroll to the last line to render all lines at least once
for _ in range(30): # little overscroll is important for detection
touch = UTMotionEvent(
"unittest", next(touch_id), {
"x": ti.center_x / float(win.width),
"y": ti.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrollup'
EventLoop.post_dispatch_input("begin", touch)
EventLoop.post_dispatch_input("end", touch)
self.advance_frames(1)
assert ti._visible_lines_range == (20, 30)
# jump to the first line again
ti.do_cursor_movement('cursor_home', control=True)
# temp fix: only change of cursor position triggers update as for now
ti._trigger_update_graphics()
self.advance_frames(1)
assert ti._visible_lines_range == (0, 10)
# scrolling up should work now
touch = UTMotionEvent(
"unittest", next(touch_id), {
"x": ti.center_x / float(win.width),
"y": ti.center_y / float(win.height),
})
touch.profile.append('button')
touch.button = 'scrollup'
EventLoop.post_dispatch_input("begin", touch)
EventLoop.post_dispatch_input("end", touch)
self.advance_frames(1)
assert ti._visible_lines_range == (1, 11)