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local Blitbuffer = require("ffi/blitbuffer")
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local ButtonTable = require("ui/widget/buttontable")
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local CenterContainer = require("ui/widget/container/centercontainer")
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local Device = require("device")
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local FocusManager = require("ui/widget/focusmanager")
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local FrameContainer = require("ui/widget/container/framecontainer")
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local Geom = require("ui/geometry")
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local GestureRange = require("ui/gesturerange")
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local Font = require("ui/font")
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local HorizontalGroup = require("ui/widget/horizontalgroup")
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local MovableContainer = require("ui/widget/container/movablecontainer")
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local NumberPickerWidget = require("ui/widget/numberpickerwidget")
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local Size = require("ui/size")
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local TextWidget = require("ui/widget/textwidget")
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local TitleBar = require("ui/widget/titlebar")
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local UIManager = require("ui/uimanager")
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local VerticalGroup = require("ui/widget/verticalgroup")
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local WidgetContainer = require("ui/widget/container/widgetcontainer")
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local _ = require("gettext")
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local Screen = Device.screen
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local T = require("ffi/util").template
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local DoubleSpinWidget = FocusManager:extend{
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title_text = "",
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title_face = Font:getFace("x_smalltfont"),
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info_text = nil,
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width = nil,
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width_factor = nil, -- number between 0 and 1, factor to the smallest of screen width and height
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height = nil,
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left_text = _("Left"),
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left_min = 1,
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left_max = 20,
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left_value = 1,
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left_precision = nil, -- default "%02d" in NumberPickerWidget
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left_wrap = false,
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right_text = _("Right"),
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right_min = 1,
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right_max = 20,
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right_value = 1,
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right_precision = nil,
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right_wrap = false,
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cancel_text = _("Close"),
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ok_text = _("Apply"),
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ok_always_enabled = false, -- set to true to enable OK button for unchanged values
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cancel_callback = nil,
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callback = nil,
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close_callback = nil,
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keep_shown_on_apply = false,
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-- Set both left and right defaults to add upper button that sets spin values to default values
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left_default = nil,
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right_default = nil,
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default_text = nil,
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-- Optional extra button above ok/cancel buttons row
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extra_text = nil,
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extra_callback = nil,
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is_range = false, -- show a range separator in default button and between the spinners
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unit = nil,
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}
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function DoubleSpinWidget:init()
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self.screen_width = Screen:getWidth()
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self.screen_height = Screen:getHeight()
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if not self.width then
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if not self.width_factor then
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self.width_factor = 0.8 -- default if no width speficied
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end
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self.width = math.floor(math.min(self.screen_width, self.screen_height) * self.width_factor)
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end
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if Device:hasKeys() then
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self.key_events.Close = { { Device.input.group.Back } }
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end
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if Device:isTouchDevice() then
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self.ges_events.TapClose = {
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GestureRange:new{
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ges = "tap",
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range = Geom:new{
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w = self.screen_width,
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h = self.screen_height,
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}
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},
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}
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end
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if self.unit and self.unit ~= "" then
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self.left_precision = self.left_precision and self.left_precision or "%1d"
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self.right_precision = self.right_precision and self.right_precision or "%1d"
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end
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-- Actually the widget layout
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self:update()
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end
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function DoubleSpinWidget:update(numberpicker_left_value, numberpicker_right_value)
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local prev_movable_offset = self.movable and self.movable:getMovedOffset()
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local prev_movable_alpha = self.movable and self.movable.alpha
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self.layout = {}
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local left_widget = NumberPickerWidget:new{
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show_parent = self,
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value = numberpicker_left_value or self.left_value,
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value_min = self.left_min,
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value_max = self.left_max,
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value_step = self.left_step,
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value_hold_step = self.left_hold_step,
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precision = self.left_precision,
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wrap = self.left_wrap,
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unit = self.unit,
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}
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self:mergeLayoutInHorizontal(left_widget)
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local right_widget = NumberPickerWidget:new{
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show_parent = self,
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value = numberpicker_right_value or self.right_value,
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value_min = self.right_min,
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value_max = self.right_max,
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value_step = self.right_step,
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value_hold_step = self.right_hold_step,
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precision = self.right_precision,
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wrap = self.right_wrap,
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unit = self.unit,
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}
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self:mergeLayoutInHorizontal(right_widget)
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left_widget.picker_updated_callback = function(value)
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self:update(value, right_widget:getValue())
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end
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right_widget.picker_updated_callback = function(value)
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self:update(left_widget:getValue(), value)
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end
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local separator_widget = TextWidget:new{
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text = self.is_range and "–" or "",
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face = self.title_face,
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bold = true,
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}
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local text_max_width = math.floor(0.95 * self.width / 2)
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local left_vertical_group = VerticalGroup:new{
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align = "center",
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left_widget,
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}
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local separator_vertical_group = VerticalGroup:new{
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align = "center",
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separator_widget,
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}
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local right_vertical_group = VerticalGroup:new{
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align = "center",
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right_widget,
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}
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if self.left_text ~= "" or self.right_text ~= "" then
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table.insert(left_vertical_group, 1, TextWidget:new{
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text = self.left_text,
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face = self.title_face,
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max_width = text_max_width,
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})
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table.insert(separator_vertical_group, 1, TextWidget:new{
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text = "",
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face = self.title_face,
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})
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table.insert(right_vertical_group, 1, TextWidget:new{
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text = self.right_text,
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face = self.title_face,
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max_width = text_max_width,
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})
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end
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local widget_group = HorizontalGroup:new{
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align = "center",
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CenterContainer:new{
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dimen = Geom:new{
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w = self.width / 2,
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h = left_vertical_group:getSize().h,
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},
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left_vertical_group,
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},
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CenterContainer:new{
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dimen = Geom:new{},
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separator_vertical_group,
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},
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CenterContainer:new{
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dimen = Geom:new{
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w = self.width / 2,
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h = right_vertical_group:getSize().h,
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},
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right_vertical_group,
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},
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}
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local title_bar = TitleBar:new{
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width = self.width,
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align = "left",
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with_bottom_line = true,
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title = self.title_text,
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title_shrink_font_to_fit = true,
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info_text = self.info_text,
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show_parent = self,
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}
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local buttons = {}
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if self.left_default and self.right_default then
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local separator = self.is_range and "–" or "/"
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local unit = ""
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if self.unit then
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if self.unit == "°" then
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unit = self.unit
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elseif self.unit ~= "" then
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unit = "\xE2\x80\xAF" .. self.unit -- use Narrow No-Break Space (NNBSP) here
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end
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end
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table.insert(buttons, {
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{
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text = self.default_text or T(_("Default values: %1%3 %4 %2%3"),
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self.left_precision and string.format(self.left_precision, self.left_default) or self.left_default,
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self.right_precision and string.format(self.right_precision, self.right_default) or self.right_default,
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unit, separator),
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callback = function()
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left_widget.value = self.left_default
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right_widget.value = self.right_default
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left_widget:update()
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right_widget:update()
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end,
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}
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})
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end
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if self.extra_text then
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table.insert(buttons, {
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{
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text = self.extra_text,
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callback = function()
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if self.extra_callback then
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self.extra_callback(left_widget:getValue(), right_widget:getValue())
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end
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if not self.keep_shown_on_apply then -- assume extra wants it same as ok
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self:onClose()
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end
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end,
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},
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})
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end
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table.insert(buttons, {
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{
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text = self.cancel_text,
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callback = function()
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if self.cancel_callback then
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self.cancel_callback()
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end
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self:onClose()
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end,
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},
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{
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text = self.ok_text,
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enabled = self.ok_always_enabled or self.left_value ~= left_widget:getValue()
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or self.right_value ~= right_widget:getValue(),
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callback = function()
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self.left_value = left_widget:getValue()
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self.right_value = right_widget:getValue()
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if self.callback then
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self.callback(self.left_value, self.right_value)
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end
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if self.keep_shown_on_apply then
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self:update()
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else
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self:onClose()
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end
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end,
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},
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})
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local button_table = ButtonTable:new{
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width = self.width - 2*Size.padding.default,
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buttons = buttons,
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zero_sep = true,
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show_parent = self,
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}
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self:mergeLayoutInVertical(button_table)
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self.widget_frame = FrameContainer:new{
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radius = Size.radius.window,
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padding = 0,
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margin = 0,
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background = Blitbuffer.COLOR_WHITE,
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VerticalGroup:new{
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align = "left",
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title_bar,
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CenterContainer:new{
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dimen = Geom:new{
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w = self.width,
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h = widget_group:getSize().h + 4 * Size.padding.large,
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},
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widget_group
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},
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CenterContainer:new{
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dimen = Geom:new{
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w = self.width,
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h = button_table:getSize().h,
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},
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button_table
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}
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}
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}
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self.movable = MovableContainer:new{
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alpha = prev_movable_alpha,
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self.widget_frame,
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}
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self[1] = WidgetContainer:new{
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align = "center",
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dimen = Geom:new{
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x = 0, y = 0,
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w = self.screen_width,
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h = self.screen_height,
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},
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self.movable,
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}
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if prev_movable_offset then
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self.movable:setMovedOffset(prev_movable_offset)
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end
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self:refocusWidget()
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UIManager:setDirty(self, function()
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return "ui", self.widget_frame.dimen
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end)
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end
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function DoubleSpinWidget:hasMoved()
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local offset = self.movable:getMovedOffset()
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return offset.x ~= 0 or offset.y ~= 0
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end
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function DoubleSpinWidget:onCloseWidget()
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UIManager:setDirty(nil, function()
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return "ui", self.widget_frame.dimen
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end)
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end
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function DoubleSpinWidget:onShow()
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UIManager:setDirty(self, function()
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return "ui", self.widget_frame.dimen
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end)
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return true
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end
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function DoubleSpinWidget:onTapClose(arg, ges_ev)
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if ges_ev.pos:notIntersectWith(self.widget_frame.dimen) then
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self:onClose()
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end
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return true
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end
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function DoubleSpinWidget:onClose()
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UIManager:close(self)
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if self.close_callback then
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self.close_callback()
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end
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return true
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end
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return DoubleSpinWidget
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