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Restore horizontal scroll position after scale change

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Guldoman 2021-09-04 21:41:26 +02:00
parent 9e5d404b29
commit 5d901732b8
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1 changed files with 13 additions and 4 deletions
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17
data/plugins/scale.lua
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@ -25,11 +25,16 @@ local function set_scale(scale)
scale = common.clamp(scale, 0.2, 6) scale = common.clamp(scale, 0.2, 6)
-- save scroll positions -- save scroll positions
local scrolls = {} local v_scrolls = {}
local h_scrolls = {}
for _, view in ipairs(core.root_view.root_node:get_children()) do for _, view in ipairs(core.root_view.root_node:get_children()) do
local n = view:get_scrollable_size() local n = view:get_scrollable_size()
if n ~= math.huge and not view:is(CommandView) and n > view.size.y then if n ~= math.huge and n > view.size.y then
scrolls[view] = view.scroll.y / (n - view.size.y) v_scrolls[view] = view.scroll.y / (n - view.size.y)
end
local hn = view:get_h_scrollable_size()
if hn ~= math.huge and hn > view.size.x then
h_scrolls[view] = view.scroll.x / hn
end end
end end
@ -57,10 +62,14 @@ local function set_scale(scale)
end end
-- restore scroll positions -- restore scroll positions
for view, n in pairs(scrolls) do for view, n in pairs(v_scrolls) do
view.scroll.y = n * (view:get_scrollable_size() - view.size.y) view.scroll.y = n * (view:get_scrollable_size() - view.size.y)
view.scroll.to.y = view.scroll.y view.scroll.to.y = view.scroll.y
end end
for view, hn in pairs(h_scrolls) do
view.scroll.x = hn * view:get_h_scrollable_size()
view.scroll.to.x = view.scroll.x
end
core.redraw = true core.redraw = true
end end