mirror of
https://github.com/koreader/koreader
synced 2024-11-11 19:11:14 +00:00
0fc7a5ed6d
Avoid drawing the fill bar our of the progress bar. Avoid zero divided by zero that return 'nan' (Not a Number), that does not bother lua code, but will crash libblitbuffer.so when it gets nan as a coordinate.
96 lines
2.7 KiB
Lua
96 lines
2.7 KiB
Lua
--[[--
|
|
Widget for displaying progress bar.
|
|
|
|
Configurable attributes:
|
|
|
|
* width
|
|
* height
|
|
* margin_v -- vertical margin for solid infill
|
|
* margin_h -- horizontal margin for solid infill
|
|
* radius
|
|
* bordersize
|
|
* bordercolor
|
|
* bgcolor
|
|
* rectcolor -- infill color
|
|
* ticks (list) -- default to nil, use this if you want to insert markers
|
|
* tick_width
|
|
* last -- maximum tick, used with ticks
|
|
|
|
Example:
|
|
|
|
local foo_bar = ProgressWidget:new{
|
|
width = Screen:scaleBySize(400),
|
|
height = Screen:scaleBySize(10),
|
|
percentage = 50/100,
|
|
}
|
|
UIManager:show(foo_bar)
|
|
|
|
]]
|
|
|
|
local Blitbuffer = require("ffi/blitbuffer")
|
|
local Geom = require("ui/geometry")
|
|
local Widget = require("ui/widget/widget")
|
|
local Screen = require("device").screen
|
|
|
|
local ProgressWidget = Widget:new{
|
|
width = nil,
|
|
height = nil,
|
|
margin_h = Screen:scaleBySize(3),
|
|
margin_v = Screen:scaleBySize(1),
|
|
radius = Screen:scaleBySize(2),
|
|
bordersize = Screen:scaleBySize(1),
|
|
bordercolor = Blitbuffer.COLOR_BLACK,
|
|
bgcolor = Blitbuffer.COLOR_WHITE,
|
|
rectcolor = Blitbuffer.gray(0.7),
|
|
percentage = nil,
|
|
ticks = nil,
|
|
tick_width = Screen:scaleBySize(3),
|
|
last = nil,
|
|
}
|
|
|
|
function ProgressWidget:getSize()
|
|
return { w = self.width, h = self.height }
|
|
end
|
|
|
|
function ProgressWidget:paintTo(bb, x, y)
|
|
local my_size = self:getSize()
|
|
self.dimen = Geom:new{
|
|
x = x, y = y,
|
|
w = my_size.w,
|
|
h = my_size.h
|
|
}
|
|
if self.dimen.w == 0 or self.dimen.h == 0 then return end
|
|
|
|
-- fill background
|
|
bb:paintRoundedRect(x, y, my_size.w, my_size.h, self.bgcolor, self.radius)
|
|
-- paint border
|
|
bb:paintBorder(x, y,
|
|
my_size.w, my_size.h,
|
|
self.bordersize, self.bordercolor, self.radius)
|
|
-- paint percentage infill
|
|
if self.percentage >= 0 and self.percentage <= 1 then
|
|
bb:paintRect(x+self.margin_h, math.ceil(y+self.margin_v+self.bordersize),
|
|
math.ceil((my_size.w-2*self.margin_h)*self.percentage),
|
|
my_size.h-2*(self.margin_v+self.bordersize), self.rectcolor)
|
|
end
|
|
if self.ticks and self.last and self.last > 0 then
|
|
local bar_width = (my_size.w-2*self.margin_h)
|
|
local y_pos = y + self.margin_v + self.bordersize
|
|
local bar_height = my_size.h-2*(self.margin_v+self.bordersize)
|
|
for i=1, #self.ticks do
|
|
bb:paintRect(
|
|
x + bar_width*(self.ticks[i]/self.last) + self.margin_h,
|
|
y_pos,
|
|
self.tick_width,
|
|
bar_height,
|
|
self.bordercolor)
|
|
end
|
|
end
|
|
end
|
|
|
|
function ProgressWidget:setPercentage(percentage)
|
|
self.percentage = percentage
|
|
end
|
|
|
|
return ProgressWidget
|