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Get basic page turning working on safari

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Since window.scrollTo does not work use a transform to translate body
instead. This means we have to handle scroll notifications and scrolling
to elements ourselves. Le sigh.
This commit is contained in:
Kovid Goyal 2017-05-27 21:59:28 +05:30
parent eeca0a8489
commit ba1341f5d4
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 29 additions and 0 deletions
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29
src/pyj/read_book/globals.pyj
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@ -50,6 +50,9 @@ def flow_viewport_y():
def flow_viewport_scroll_to(x, y): def flow_viewport_scroll_to(x, y):
window.scrollTo(x, y) window.scrollTo(x, y)
def paged_viewport_y():
return 0
scroll_viewport.x = flow_viewport_x scroll_viewport.x = flow_viewport_x
scroll_viewport.y = flow_viewport_y scroll_viewport.y = flow_viewport_y
scroll_viewport.scroll_to = flow_viewport_scroll_to scroll_viewport.scroll_to = flow_viewport_scroll_to
@ -59,11 +62,29 @@ if is_ios:
return window_width.from_parent or window.innerWidth return window_width.from_parent or window.innerWidth
window_height = def(): window_height = def():
return window_height.from_parent or window.innerHeight return window_height.from_parent or window.innerHeight
paged_viewport_scroll_to = def (x, y):
if x is 0:
document.documentElement.style.transform = 'none'
return
x *= -1
document.documentElement.style.transform = f'translateX({x}px)'
paged_viewport_x = def():
raw = document.documentElement.style.transform
if not raw:
return 0
raw = raw[12:]
ans = parseInt(raw)
if isNaN(ans):
return 0
return ans
else: else:
window_width = def(): window_width = def():
return window.innerWidth return window.innerWidth
window_height = def(): window_height = def():
return window.innerHeight return window.innerHeight
paged_viewport_scroll_to = flow_viewport_scroll_to
paged_viewport_x = flow_viewport_x
scroll_viewport.width = window_width scroll_viewport.width = window_width
scroll_viewport.height = window_height scroll_viewport.height = window_height
@ -75,6 +96,14 @@ current_layout_mode.value = 'flow'
def set_layout_mode(val): def set_layout_mode(val):
current_layout_mode.value = val current_layout_mode.value = val
if val is 'flow':
scroll_viewport.x = flow_viewport_x
scroll_viewport.y = flow_viewport_y
scroll_viewport.scroll_to = flow_viewport_scroll_to
else:
scroll_viewport.x = paged_viewport_x
scroll_viewport.y = paged_viewport_y
scroll_viewport.scroll_to = paged_viewport_scroll_to
def current_spine_item(): def current_spine_item():
return current_spine_item.value return current_spine_item.value