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https://github.com/koreader/koreader.git
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29908800b9
see #13362 generally and https://github.com/koreader/koreader/pull/13362#issuecomment-2749434009
62 lines
1.8 KiB
Lua
62 lines
1.8 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 BD = require("ui/bidi")
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local Blitbuffer = require("ffi/blitbuffer")
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local Geom = require("ui/geometry")
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local Size = require("ui/size")
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local WidgetContainer = require("ui/widget/container/widgetcontainer")
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local UnderlineContainer = WidgetContainer:extend{
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linesize = Size.line.thick,
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padding = Size.padding.tiny,
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-- We default to white to be invisible by default for FocusManager use-cases (only switching to black @ onFocus)
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color = Blitbuffer.COLOR_WHITE,
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vertical_align = "top",
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line_width = nil, -- (Don't use this, it's there because of the complex and ugly layout in TouchMenuItem)
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}
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function UnderlineContainer:getSize()
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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 + 2*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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if not self.dimen then
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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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else
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self.dimen.x = x
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self.dimen.y = y
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end
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local line_width = self.line_width or self.dimen.w
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local line_x = x
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if BD.mirroredUILayout() then
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line_x = line_x + self.dimen.w - line_width
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end
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local content_size = self[1]:getSize()
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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(line_x, y + container_size.h - self.linesize,
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line_width, self.linesize, self.color)
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end
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return UnderlineContainer
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