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https://github.com/koreader/koreader
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45a4aac3d3
Re: https://github.com/koreader/koreader/issues/9806#issuecomment-1416827447 Depends on https://github.com/koreader/koreader-base/pull/1576 Includes assorted cosmetics tweaks related to duplicate `setDirty` calls when instantiating widgets that already have an `onShow` handler doing it. (I left widgets doing it in `update` instead of `init` alone, on the assumption that callers *may* be relying on that behavior when updating widgets at runtime. This might actually never matter, and it certainly didn't for ScreenSaverWidget, which is why I removed it from there ;p).
106 lines
2.9 KiB
Lua
106 lines
2.9 KiB
Lua
--[[--
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Widget that displays a qr code.
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It vanishes on key press or after a given timeout.
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Example:
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local UIManager = require("ui/uimanager")
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local _ = require("gettext")
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local Screen = require("device").screen
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local sample
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sample = QRMessage:new{
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text = _("my message"),
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height = Screen:scaleBySize(400),
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width = Screen:scaleBySize(400),
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timeout = 5, -- This widget will vanish in 5 seconds.
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}
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UIManager:show(sample)
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]]
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local Blitbuffer = require("ffi/blitbuffer")
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local CenterContainer = require("ui/widget/container/centercontainer")
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local Device = require("device")
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local FrameContainer = require("ui/widget/container/framecontainer")
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local Geom = require("ui/geometry")
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local GestureRange = require("ui/gesturerange")
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local QRWidget = require("ui/widget/qrwidget")
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local InputContainer = require("ui/widget/container/inputcontainer")
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local UIManager = require("ui/uimanager")
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local Input = Device.input
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local Screen = Device.screen
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local Size = require("ui/size")
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local QRMessage = InputContainer:extend{
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modal = true,
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timeout = nil, -- in seconds
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text = nil, -- The text to encode.
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width = nil, -- The width. Keep it nil to use original width.
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height = nil, -- The height. Keep it nil to use original height.
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dismiss_callback = function() end,
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alpha = nil,
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scale_factor = 1,
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}
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function QRMessage:init()
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if Device:hasKeys() then
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self.key_events.AnyKeyPressed = { { Input.group.Any } }
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end
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if Device:isTouchDevice() then
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self.ges_events.TapClose = {
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GestureRange:new{
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ges = "tap",
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range = Geom:new{
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x = 0, y = 0,
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w = Screen:getWidth(),
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h = Screen:getHeight(),
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}
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}
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}
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end
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local padding = Size.padding.fullscreen
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local image_widget = QRWidget:new{
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text = self.text,
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width = self.width and (self.width - 2 * padding),
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height = self.height and (self.height - 2 * padding),
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alpha = self.alpha,
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scale_factor = self.scale_factor,
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}
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local frame = FrameContainer:new{
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background = Blitbuffer.COLOR_WHITE,
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padding = padding,
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image_widget,
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}
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self[1] = CenterContainer:new{
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dimen = Screen:getSize(),
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frame,
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}
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end
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function QRMessage:onCloseWidget()
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UIManager:setDirty(nil, function()
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return "ui", self[1][1].dimen -- i.e., frame
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end)
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end
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function QRMessage:onShow()
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-- triggered by the UIManager after we got successfully shown (not yet painted)
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UIManager:setDirty(self, function()
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return "ui", self[1][1].dimen
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end)
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if self.timeout then
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UIManager:scheduleIn(self.timeout, function() UIManager:close(self) end)
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end
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return true
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end
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function QRMessage:onTapClose()
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self.dismiss_callback()
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UIManager:close(self)
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end
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QRMessage.onAnyKeyPressed = QRMessage.onTapClose
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return QRMessage
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