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koreader/frontend/ui/reader/readerrotation.lua

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ReaderRotation = InputContainer:new{
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 },
},
current_rotation = 0
}
-- 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