mirror of
https://github.com/koreader/koreader
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40 lines
1.1 KiB
Lua
40 lines
1.1 KiB
Lua
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 Widget = require("ui/widget/widget")
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local VerticalScrollBar = Widget:new{
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enable = true,
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low = 0,
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high = 1,
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width = Size.padding.default,
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height = Size.item.height_large,
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bordersize = Size.border.thin,
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bordercolor = Blitbuffer.COLOR_BLACK,
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radius = 0,
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rectcolor = Blitbuffer.COLOR_BLACK,
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}
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function VerticalScrollBar:getSize()
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return Geom:new{
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w = self.width,
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h = self.height
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}
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end
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function VerticalScrollBar:set(low, high)
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self.low = low > 0 and low or 0
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self.high = high < 1 and high or 1
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end
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function VerticalScrollBar:paintTo(bb, x, y)
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if not self.enable then return end
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bb:paintBorder(x, y, self.width, self.height,
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self.bordersize, self.bordercolor, self.radius)
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bb:paintRect(x + self.bordersize, y + self.bordersize + self.low * self.height,
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self.width - 2 * self.bordersize,
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(self.height - 2 * self.bordersize) * (self.high - self.low), self.rectcolor)
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end
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return VerticalScrollBar
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