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koreader/frontend/ui/widget/buttonprogresswidget.lua

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local Blitbuffer = require("ffi/blitbuffer")
local Button = require("ui/widget/button")
local Device = require("device")
local Geom = require("ui/geometry")
local HorizontalGroup = require("ui/widget/horizontalgroup")
local InputContainer = require("ui/widget/container/inputcontainer")
local FrameContainer = require("ui/widget/container/framecontainer")
local Size = require("ui/size")
local UIManager = require("ui/uimanager")
local _ = require("gettext")
local Screen = Device.screen
local ButtonProgressWidget = InputContainer:new{
width = Screen:scaleBySize(216),
height = Size.item.height_default,
font_face = "cfont",
font_size = 16,
enabled = true,
num_buttons = 2,
position = 1,
}
function ButtonProgressWidget:init()
self.buttonprogress_frame = FrameContainer:new{
background = Blitbuffer.COLOR_WHITE,
color = Blitbuffer.COLOR_GREY,
radius = Size.radius.window,
bordersize = 0,
padding = Size.padding.small,
dim = not self.enabled,
width = self.width,
height = self.height,
}
self.buttonprogress_content = HorizontalGroup:new{}
self:update()
self.buttonprogress_frame[1] = self.buttonprogress_content
self[1] = self.buttonprogress_frame
self.dimen = Geom:new(self.buttonprogress_frame:getSize())
end
function ButtonProgressWidget:update()
self.buttonprogress_content:clear()
local button_margin = Size.margin.tiny
local button_padding = Size.padding.button
local button_bordersize = Size.border.button
local preselect
local button_width = math.floor(self.width / self.num_buttons) - 2*button_padding - 2*button_margin - 2*button_bordersize
for i = 1, self.num_buttons do
if self.position >= i then
preselect = true
else
preselect = false
end
local button = Button:new{
text = "",
radius = 0,
margin = button_margin,
padding = button_padding,
bordersize = button_bordersize,
enabled = true,
width = button_width,
preselect = preselect,
text_font_face = self.font_face,
text_font_size = self.font_size,
callback = function()
self.callback(i)
self.position = i
self:update()
end,
hold_callback = function()
self.hold_callback(i)
end,
}
table.insert(self.buttonprogress_content, button)
end
UIManager:setDirty(self.show_parrent, function()
return "ui", self.dimen
end)
end
function ButtonProgressWidget:setPosition(position)
self.position = position
self:update()
end
return ButtonProgressWidget