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koreader/frontend/ui/widget/buttondialog.lua
NiLuJe 285fc75aa7
Button: Better handling of translucent MovableContainer (#7223)
* DictQuickLookup: Preserve alpha when switching dict, and scrolling
inside a dict.

* Start moving the NumberPicker alpha hack to Button itself

This makes handling flash_ui easier and saner, avoiding flickering.

* Handle the transparency hack entirely from within Button

* Murder the now unnecessary NumberPicker update_callback hack

* Tweak comments

* And the Button handling made that redundant, too

* Squish debug print

* More comment tweaks

* Reset transparency on scrolling instead of rpeserving it

* Reset alpha when switching dictionaries

* Simplify the pre/post callbakc transparency state handling

And explain why we need to care.

* Give a named reference to ButtonDialog's MovableContainer, so the Button
alpha hack behaves with it

* Document the "self.movable" convention

* Amend that comment a bit

e.g., we don't care much about MultiConfirmBox'w MpvableContainer, as
any button action will close it.

* And make SkimTo's MovableContainer accessible so that Button can grok
that it's translucent
2021-02-02 04:27:14 +01:00

96 lines
2.7 KiB
Lua

local Blitbuffer = require("ffi/blitbuffer")
local ButtonTable = require("ui/widget/buttontable")
local CenterContainer = require("ui/widget/container/centercontainer")
local Device = require("device")
local FrameContainer = require("ui/widget/container/framecontainer")
local Geom = require("ui/geometry")
local GestureRange = require("ui/gesturerange")
local InputContainer = require("ui/widget/container/inputcontainer")
local MovableContainer = require("ui/widget/container/movablecontainer")
local Size = require("ui/size")
local UIManager = require("ui/uimanager")
local _ = require("gettext")
local Screen = require("device").screen
local ButtonDialog = InputContainer:new{
buttons = nil,
tap_close_callback = nil,
alpha = nil, -- passed to MovableContainer
}
function ButtonDialog:init()
if Device:hasKeys() then
local close_keys = Device:hasFewKeys() and { "Back", "Left" } or "Back"
self.key_events = {
Close = { { close_keys }, doc = "close button dialog" }
}
end
if Device:isTouchDevice() then
self.ges_events.TapClose = {
GestureRange:new{
ges = "tap",
range = Geom:new{
x = 0, y = 0,
w = Screen:getWidth(),
h = Screen:getHeight(),
}
}
}
end
self.movable = MovableContainer:new{
alpha = self.alpha,
FrameContainer:new{
ButtonTable:new{
width = math.floor(Screen:getWidth() * 0.9),
buttons = self.buttons,
show_parent = self,
},
background = Blitbuffer.COLOR_WHITE,
bordersize = Size.border.window,
radius = Size.radius.window,
padding = Size.padding.button,
-- No padding at top or bottom to make all buttons
-- look the same size
padding_top = 0,
padding_bottom = 0,
}
}
self[1] = CenterContainer:new{
dimen = Screen:getSize(),
self.movable,
}
end
function ButtonDialog:onShow()
UIManager:setDirty(self, function()
return "ui", self.movable.dimen
end)
end
function ButtonDialog:onCloseWidget()
UIManager:setDirty(nil, function()
return "flashui", self.movable.dimen
end)
end
function ButtonDialog:onTapClose()
UIManager:close(self)
if self.tap_close_callback then
self.tap_close_callback()
end
return true
end
function ButtonDialog:onClose()
self:onTapClose()
return true
end
function ButtonDialog:paintTo(...)
InputContainer.paintTo(self, ...)
self.dimen = self.movable.dimen
end
return ButtonDialog