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koreader/frontend/ui/widget/container/underlinecontainer.lua

43 lines
1.1 KiB
Lua

local WidgetContainer = require("ui/widget/container/widgetcontainer")
local Geom = require("ui/geometry")
--[[
an UnderlineContainer is a WidgetContainer that is able to paint
a line under its child node
--]]
local UnderlineContainer = WidgetContainer:new{
linesize = 2,
padding = 1,
color = 0,
vertical_align = "top",
}
function UnderlineContainer:getSize()
return self:getContentSize()
end
function UnderlineContainer:getContentSize()
local contentSize = self[1]:getSize()
return Geom:new{
w = contentSize.w,
h = contentSize.h + self.linesize + self.padding
}
end
function UnderlineContainer:paintTo(bb, x, y)
local container_size = self:getSize()
local content_size = self:getContentSize()
local p_y = y
if self.vertical_align == "center" then
p_y = math.floor((container_size.h - content_size.h) / 2) + y
elseif self.vertical_align == "bottom" then
p_y = (container_size.h - content_size.h) + y
end
self[1]:paintTo(bb, x, p_y)
bb:paintRect(x, y + container_size.h - self.linesize,
container_size.w, self.linesize, self.color)
end
return UnderlineContainer