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Increase the threshold for swipe detection to 64px

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Kovid Goyal 2020-08-10 13:36:20 +05:30
parent 054a7e374f
commit e304300fc6
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1 changed files with 4 additions and 1 deletions
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5
src/pyj/read_book/touch.pyj
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@ -7,6 +7,7 @@ from read_book.viewport import scroll_viewport
HOLD_THRESHOLD = 750 # milliseconds
TAP_THRESHOLD = 8 # pixels
SWIPE_THRESHOLD = 64 # pixels
TAP_LINK_THRESHOLD = 5 # pixels
PINCH_THRESHOLD = 10 # pixels
LONG_TAP_THRESHOLD = 500 # milliseconds
@ -49,7 +50,8 @@ def interpret_single_gesture(touch, gesture_id):
return ans
delta_x = abs(touch.viewport_x[-1] - touch.viewport_x[0])
delta_y = abs(touch.viewport_y[-1] - touch.viewport_y[0])
if max(delta_y, delta_x) > TAP_THRESHOLD and min(delta_x, delta_y)/max(delta_y, delta_x) < 0.35:
max_disp = max(delta_y, delta_x)
if max_disp > SWIPE_THRESHOLD and min(delta_x, delta_y)/max_disp < 0.35:
ans.type = 'swipe'
ans.axis = 'vertical' if delta_y > delta_x else 'horizontal'
ans.points = pts = touch.viewport_y if ans.axis is 'vertical' else touch.viewport_x
@ -64,6 +66,7 @@ def interpret_single_gesture(touch, gesture_id):
return ans
return ans
def interpret_double_gesture(touch1, touch2, gesture_id):
ans = {'active':touch1.active or touch2.active, 'is_held':touch1.is_held or touch2.is_held, 'id':gesture_id}
max_x_displacement1 = max_displacement(touch1.viewport_x)