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96 lines
2.7 KiB
Lua
96 lines
2.7 KiB
Lua
--[[--
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Widget for displaying progress bar.
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Configurable attributes:
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* width
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* height
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* margin_v -- vertical margin for solid infill
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* margin_h -- horizontal margin for solid infill
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* radius
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* bordersize
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* bordercolor
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* bgcolor
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* rectcolor -- infill color
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* ticks (list) -- default to nil, use this if you want to insert markers
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* tick_width
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* last -- maximum tick, used with ticks
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Example:
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local foo_bar = ProgressWidget:new{
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width = Screen:scaleBySize(400),
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height = Screen:scaleBySize(10),
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percentage = 50/100,
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}
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UIManager:show(foo_bar)
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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 Widget = require("ui/widget/widget")
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local Screen = require("device").screen
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local ProgressWidget = Widget:new{
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width = nil,
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height = nil,
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margin_h = Screen:scaleBySize(3),
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margin_v = Screen:scaleBySize(1),
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radius = Screen:scaleBySize(2),
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bordersize = Screen:scaleBySize(1),
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bordercolor = Blitbuffer.COLOR_BLACK,
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bgcolor = Blitbuffer.COLOR_WHITE,
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rectcolor = Blitbuffer.COLOR_DIM_GRAY,
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percentage = nil,
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ticks = nil,
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tick_width = Screen:scaleBySize(3),
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last = nil,
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}
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function ProgressWidget:getSize()
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return { w = self.width, h = self.height }
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end
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function ProgressWidget:paintTo(bb, x, y)
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local my_size = self:getSize()
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self.dimen = Geom:new{
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x = x, y = y,
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w = my_size.w,
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h = my_size.h
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}
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if self.dimen.w == 0 or self.dimen.h == 0 then return end
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-- fill background
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bb:paintRoundedRect(x, y, my_size.w, my_size.h, self.bgcolor, self.radius)
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-- paint border
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bb:paintBorder(x, y,
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my_size.w, my_size.h,
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self.bordersize, self.bordercolor, self.radius)
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-- paint percentage infill
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if self.percentage >= 0 and self.percentage <= 1 then
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bb:paintRect(x+self.margin_h, math.ceil(y+self.margin_v+self.bordersize),
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math.ceil((my_size.w-2*self.margin_h)*self.percentage),
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my_size.h-2*(self.margin_v+self.bordersize), self.rectcolor)
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end
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if self.ticks and self.last and self.last > 0 then
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local bar_width = (my_size.w-2*self.margin_h)
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local y_pos = y + self.margin_v + self.bordersize
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local bar_height = my_size.h-2*(self.margin_v+self.bordersize)
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for i=1, #self.ticks do
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bb:paintRect(
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x + bar_width*(self.ticks[i]/self.last) + self.margin_h,
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y_pos,
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self.tick_width,
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bar_height,
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self.bordercolor)
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end
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end
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end
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function ProgressWidget:setPercentage(percentage)
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self.percentage = percentage
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end
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return ProgressWidget
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