2019-07-12 08:59:36 +00:00
|
|
|
local class = require('opus.class')
|
|
|
|
local UI = require('opus.ui')
|
|
|
|
local Util = require('opus.util')
|
|
|
|
|
|
|
|
local colors = _G.colors
|
|
|
|
|
|
|
|
UI.Slider = class(UI.Window)
|
|
|
|
UI.Slider.defaults = {
|
|
|
|
UIElement = 'Slider',
|
|
|
|
height = 1,
|
|
|
|
barChar = UI.extChars and '\140' or '-',
|
|
|
|
barColor = colors.gray,
|
|
|
|
sliderChar = UI.extChars and '\143' or '\124',
|
|
|
|
sliderColor = colors.blue,
|
2019-07-12 18:47:51 +00:00
|
|
|
sliderFocusColor = colors.lightBlue,
|
|
|
|
leftBorder = UI.extChars and '\141' or '\124',
|
|
|
|
rightBorder = UI.extChars and '\142' or '\124',
|
2019-07-12 08:59:36 +00:00
|
|
|
value = 0,
|
|
|
|
min = 0,
|
|
|
|
max = 100,
|
|
|
|
event = 'slider_update',
|
2019-07-12 18:47:51 +00:00
|
|
|
accelerators = {
|
|
|
|
right = 'slide_right',
|
|
|
|
left = 'slide_left',
|
|
|
|
}
|
2019-07-12 08:59:36 +00:00
|
|
|
}
|
2019-07-12 18:47:51 +00:00
|
|
|
function UI.Slider:setValue(value)
|
|
|
|
self.value = tonumber(value) or self.min
|
|
|
|
end
|
|
|
|
|
|
|
|
function UI.Slider:reset() -- form support
|
|
|
|
self.value = self.min
|
|
|
|
self:draw()
|
|
|
|
end
|
|
|
|
|
|
|
|
function UI.Slider:focus()
|
|
|
|
self:draw()
|
|
|
|
end
|
|
|
|
|
2019-07-12 08:59:36 +00:00
|
|
|
function UI.Slider:draw()
|
|
|
|
local range = self.max - self.min
|
|
|
|
local perc = (self.value - self.min) / range
|
|
|
|
local progress = Util.clamp(1 + self.width * perc, 1, self.width)
|
|
|
|
|
|
|
|
local bar = { }
|
|
|
|
for i = 1, self.width do
|
|
|
|
local filler =
|
|
|
|
i == 1 and self.leftBorder or
|
|
|
|
i == self.width and self.rightBorder or
|
|
|
|
self.barChar
|
|
|
|
|
2019-11-14 22:43:20 +00:00
|
|
|
table.insert(bar, filler)
|
2019-07-12 08:59:36 +00:00
|
|
|
end
|
|
|
|
self:write(1, 1, table.concat(bar), nil, self.barColor)
|
2019-07-12 18:47:51 +00:00
|
|
|
self:write(progress, 1, self.sliderChar, nil, self.focused and self.sliderFocusColor or self.sliderColor)
|
2019-07-12 08:59:36 +00:00
|
|
|
end
|
|
|
|
|
|
|
|
function UI.Slider:eventHandler(event)
|
|
|
|
if event.type == "mouse_down" or event.type == "mouse_drag" then
|
|
|
|
local range = self.max - self.min
|
|
|
|
local i = (event.x - 1) / (self.width - 1)
|
|
|
|
self.value = self.min + (i * range)
|
|
|
|
self:emit({ type = self.event, value = self.value, element = self })
|
|
|
|
self:draw()
|
2019-07-12 18:47:51 +00:00
|
|
|
|
|
|
|
elseif event.type == 'slide_left' or event.type == 'slide_right' then
|
|
|
|
local range = self.max - self.min
|
|
|
|
local step = range / self.width
|
|
|
|
if event.type == 'slide_left' then
|
|
|
|
self.value = Util.clamp(self.value - step, self.min, self.max)
|
|
|
|
else
|
|
|
|
self.value = Util.clamp(self.value + step, self.min, self.max)
|
|
|
|
end
|
|
|
|
self:emit({ type = self.event, value = self.value, element = self })
|
|
|
|
self:draw()
|
2019-07-12 08:59:36 +00:00
|
|
|
end
|
|
|
|
end
|
2019-11-14 04:50:00 +00:00
|
|
|
|
|
|
|
function UI.Slider.example()
|
|
|
|
return UI.Slider {
|
|
|
|
y = 2, x = 2, ex = -2,
|
|
|
|
min = 0, max = 1,
|
|
|
|
}
|
|
|
|
end
|