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Kovid Goyal 2021-03-15 10:25:38 +05:30
parent f4fc7c4259
commit 3eb5877ba5
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1 changed files with 12 additions and 10 deletions
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22
src/pyj/read_book/touch.pyj
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@ -26,6 +26,14 @@ def copy_touch(t):
'active':True, 'mtimes':v'[now]', 'ctime':now, 'is_held':False, 'x_velocity': 0, 'y_velocity': 0
}
def update_touch(t, touch):
now = window.performance.now()
t.mtimes.push(now)
t.page_x.push(touch.pageX), t.page_y.push(touch.pageY)
t.viewport_x.push(touch.clientX), t.viewport_y.push(touch.clientY)
def max_displacement(points):
ans = 0
first = points[0]
@ -184,18 +192,12 @@ class TouchHandler:
if len(self.ongoing_touches) > 0:
self.start_hold_timer()
def update_touch(self, t, touch):
now = window.performance.now()
t.mtimes.push(now)
t.page_x.push(touch.pageX), t.page_y.push(touch.pageY)
t.viewport_x.push(touch.clientX), t.viewport_y.push(touch.clientY)
def handle_touchmove(self, ev):
ev.preventDefault(), ev.stopPropagation()
for touch in ev.changedTouches:
t = self.ongoing_touches[touch_id(touch)]
if t:
self.update_touch(t, touch)
update_touch(t, touch)
self.dispatch_gesture()
def handle_touchend(self, ev):
@ -204,7 +206,7 @@ class TouchHandler:
t = self.ongoing_touches[touch_id(touch)]
if t:
t.active = False
self.update_touch(t, touch)
update_touch(t, touch)
self.prune_expired_touches()
if not self.has_active_touches:
self.dispatch_gesture()
@ -285,8 +287,8 @@ main_touch_handler = BookTouchHandler()
left_margin_handler = BookTouchHandler('left')
right_margin_handler = BookTouchHandler('right')
def install_handlers(elem, handler):
options = {'capture': True, 'passive': False}
def install_handlers(elem, handler, passive):
options = {'capture': True, 'passive': v'!!passive'}
elem.addEventListener('touchstart', handler.handle_touchstart, options)
elem.addEventListener('touchmove', handler.handle_touchmove, options)
elem.addEventListener('touchend', handler.handle_touchend, options)