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koreader/frontend/apps/reader/modules/readerrotation.lua
chrox 0dd3a1f8a1 add option to turn off e-ink optimization
which currently just sets free the limitation of panning gestures
emitting rate. This should fix #1039 when unchecking the
"E-ink optimization" in the "Screen settings".
2014-11-06 13:16:35 +08:00

65 lines
1.9 KiB
Lua

local InputContainer = require("ui/widget/container/inputcontainer")
local Screen = require("device").screen
local Geom = require("ui/geometry")
local Device = require("device")
local Event = require("ui/event")
local GestureRange = require("ui/gesturerange")
local _ = require("gettext")
local ReaderRotation = InputContainer:new{
ROTATE_ANGLE_THRESHOLD = 15,
current_rotation = 0
}
function ReaderRotation:init()
if Device:hasKeyboard() then
self.key_events = {
-- these will all generate the same event, just with different arguments
RotateLeft = {
{"J"},
doc = "rotate left by 90 degrees",
event = "Rotate", args = -90 },
RotateRight = {
{"K"},
doc = "rotate right by 90 degrees",
event = "Rotate", args = 90 },
}
end
if Device:isTouchDevice() then
self.ges_events = {
RotateGes = {
GestureRange:new{
ges = "rotate",
range = Geom:new{
x = 0, y = 0,
w = Screen:getWidth(),
h = Screen:getHeight(),
},
rate = 0.3,
}
},
}
end
end
-- TODO: reset rotation on new document, maybe on new page?
function ReaderRotation:onRotate(rotate_by)
self.current_rotation = (self.current_rotation + rotate_by) % 360
self.ui:handleEvent(Event:new("RotationUpdate", self.current_rotation))
return true
end
function ReaderRotation:onRotateGes(arg, ges)
if ges.angle and ges.angle > self.ROTATE_ANGLE_THRESHOLD then
if Screen:getScreenMode() == "portrait" then
self.ui:handleEvent(Event:new("SetScreenMode", "landscape"))
else
self.ui:handleEvent(Event:new("SetScreenMode", "portrait"))
end
end
return true
end
return ReaderRotation