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52 lines
1.5 KiB
Lua
52 lines
1.5 KiB
Lua
local InputContainer = require("ui/widget/container/inputcontainer")
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local Device = require("device")
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local DEBUG = require("dbg")
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local _ = require("gettext")
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local ReaderPanning = InputContainer:new{
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-- defaults
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panning_steps = {
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normal = 50,
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alt = 25,
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shift = 10,
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altshift = 5
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},
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}
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function ReaderPanning:init()
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if Device:isTouchDevice() then
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else
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self.key_events = {
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-- these will all generate the same event, just with different arguments
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MoveUp = {
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{ "Up" }, doc = "move visible area up",
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event = "Panning", args = {0, -1} },
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MoveDown = {
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{ "Down" }, doc = "move visible area down",
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event = "Panning", args = {0, 1} },
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MoveLeft = {
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{ "Left" }, doc = "move visible area left",
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event = "Panning", args = {-1, 0} },
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MoveRight = {
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{ "Right" }, doc = "move visible area right",
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event = "Panning", args = {1, 0} },
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}
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end
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end
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function ReaderPanning:onSetDimensions(dimensions)
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self.dimen = dimensions
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end
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function ReaderPanning:onPanning(args, key)
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local dx, dy = unpack(args)
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DEBUG("key =", key)
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-- for now, bounds checking/calculation is done in the view
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self.view:PanningUpdate(
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dx * self.panning_steps.normal * self.dimen.w / 100,
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dy * self.panning_steps.normal * self.dimen.h / 100)
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return true
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end
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return ReaderPanning
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