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52 lines
1.5 KiB
Lua
52 lines
1.5 KiB
Lua
--[[--
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An UnderlineContainer is a WidgetContainer that is able to paint
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a line under its child node.
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--]]
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local Blitbuffer = require("ffi/blitbuffer")
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local Geom = require("ui/geometry")
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local WidgetContainer = require("ui/widget/container/widgetcontainer")
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local Screen = require("device").screen
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local UnderlineContainer = WidgetContainer:new{
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linesize = Screen:scaleBySize(2),
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padding = Screen:scaleBySize(1),
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-- TODO: shouldn't this default to black instead?
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color = Blitbuffer.COLOR_WHITE,
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vertical_align = "top",
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}
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function UnderlineContainer:getSize()
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return self:getContentSize()
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end
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function UnderlineContainer:getContentSize()
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local contentSize = self[1]:getSize()
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return Geom:new{
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w = contentSize.w,
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h = contentSize.h + self.linesize + self.padding
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}
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end
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function UnderlineContainer:paintTo(bb, x, y)
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local container_size = self:getSize()
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self.dimen = Geom:new{
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x = x, y = y,
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w = container_size.w,
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h = container_size.h
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}
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local content_size = self:getContentSize()
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local p_y = y
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if self.vertical_align == "center" then
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p_y = math.floor((container_size.h - content_size.h) / 2) + y
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elseif self.vertical_align == "bottom" then
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p_y = (container_size.h - content_size.h) + y
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end
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self[1]:paintTo(bb, x, p_y)
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bb:paintRect(x, y + container_size.h - self.linesize,
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container_size.w, self.linesize, self.color)
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end
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return UnderlineContainer
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