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local Blitbuffer = require("ffi/blitbuffer")
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local Button = require("ui/widget/button")
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local Device = require("device")
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local Geom = require("ui/geometry")
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local HorizontalGroup = require("ui/widget/horizontalgroup")
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local HorizontalSpan = require("ui/widget/horizontalspan")
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local InputContainer = require("ui/widget/container/inputcontainer")
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local FrameContainer = require("ui/widget/container/framecontainer")
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local Size = require("ui/size")
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local UIManager = require("ui/uimanager")
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local _ = require("gettext")
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local Screen = Device.screen
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local ButtonProgressWidget = InputContainer:new{
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width = Screen:scaleBySize(216),
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height = Size.item.height_default,
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padding = Size.padding.small,
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font_face = "cfont",
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font_size = 16,
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enabled = true,
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num_buttons = 2,
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position = 1,
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default_position = nil,
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thin_grey_style = false, -- default to black
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fine_tune = false, -- no -/+ buttons on the extremities by default
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more_options = false, -- no "⋮" button
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}
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function ButtonProgressWidget:init()
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self.buttonprogress_frame = FrameContainer:new{
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background = Blitbuffer.COLOR_WHITE,
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color = Blitbuffer.COLOR_DARK_GRAY,
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radius = Size.radius.window,
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bordersize = 0,
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padding = self.padding,
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dim = not self.enabled,
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}
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self.buttonprogress_content = HorizontalGroup:new{}
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self.horizontal_span_width = 0
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if self.fine_tune or self.more_options then
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self.horizontal_span = HorizontalSpan:new{
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width = Size.margin.fine_tune
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}
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self.horizontal_span_width = self.horizontal_span.width
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end
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self:update()
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self.buttonprogress_frame[1] = self.buttonprogress_content
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self[1] = self.buttonprogress_frame
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self.dimen = Geom:new(self.buttonprogress_frame:getSize())
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end
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function ButtonProgressWidget:update()
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self.buttonprogress_content:clear()
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local button_margin = Size.margin.tiny
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local button_padding = Size.padding.button
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local button_bordersize = self.thin_grey_style and Size.border.thin or Size.border.button
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local buttons_count = self.num_buttons
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local span_count = 0
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if self.fine_tune then
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buttons_count = buttons_count + 2
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span_count = 2
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end
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if self.more_options then
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buttons_count = buttons_count + 1
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span_count = span_count + 1
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end
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local button_width_real = (self.width - span_count * self.horizontal_span_width) / buttons_count - 2*button_padding - 2*button_margin - 2*button_bordersize
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local button_width = math.floor(button_width_real)
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local button_width_adjust = button_width_real - button_width
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local button_width_to_add = 0
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-- Minus button on the left
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if self.fine_tune then
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button_width_to_add = button_width_to_add + button_width_adjust
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local margin = button_margin
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local extra_border_size = 0
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local button = Button:new{
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text = "−",
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radius = 0,
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margin = margin,
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padding = button_padding,
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bordersize = button_bordersize + extra_border_size,
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enabled = true,
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width = button_width - 2*extra_border_size,
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preselect = false,
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text_font_face = self.font_face,
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text_font_size = self.font_size,
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callback = function()
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self.callback("-")
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self:update()
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end,
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no_focus = true,
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hold_callback = function()
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self.hold_callback("-")
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end,
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}
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if self.thin_grey_style then
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button.frame.color = Blitbuffer.COLOR_DARK_GRAY
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end
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table.insert(self.buttonprogress_content, button)
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table.insert(self.buttonprogress_content, self.horizontal_span)
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end
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-- Actual progress bar
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for i = 1, self.num_buttons do
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button_width_to_add = button_width_to_add + button_width_adjust
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local real_button_width = button_width
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if button_width_to_add >= 1 then
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-- One pixel wider to better align the entire widget
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real_button_width = button_width + math.floor(button_width_to_add)
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button_width_to_add = button_width_to_add - math.floor(button_width_to_add)
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end
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local highlighted = i <= self.position
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local is_default = i == self.default_position
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local margin = button_margin
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if self.thin_grey_style and highlighted then
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margin = 0 -- moved outside button so it's not inverted
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end
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local extra_border_size = 0
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if not self.thin_grey_style and is_default then
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-- make the border a bit bigger on the default button
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extra_border_size = Size.border.thin
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end
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local button = Button:new{
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text = "",
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radius = 0,
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margin = margin,
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padding = button_padding,
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bordersize = button_bordersize + extra_border_size,
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enabled = true,
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width = real_button_width - 2*extra_border_size,
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preselect = highlighted,
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text_font_face = self.font_face,
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text_font_size = self.font_size,
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callback = function()
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self.callback(i)
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self.position = i
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self:update()
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end,
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no_focus = true,
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hold_callback = function()
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self.hold_callback(i)
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end,
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}
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if self.thin_grey_style then
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if is_default then
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-- use a black border as a discreet visual hint
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button.frame.color = Blitbuffer.COLOR_BLACK
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else
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-- otherwise, gray border, same as the filled
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-- button, so looking as if no border
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button.frame.color = Blitbuffer.COLOR_DARK_GRAY
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end
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if highlighted then
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-- The button and its frame background will be inverted,
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-- so invert the color we want so it gets inverted back
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button.frame.background = Blitbuffer.COLOR_DARK_GRAY:invert()
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button = FrameContainer:new{ -- add margin back
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margin = button_margin,
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padding = 0,
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bordersize = 0,
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button,
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}
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end
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end
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table.insert(self.buttonprogress_content, button)
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end
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-- Plus button on the right
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if self.fine_tune then
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button_width_to_add = button_width_to_add + button_width_adjust
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local real_button_width = button_width
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if button_width_to_add >= 1 then
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-- One pixel wider to better align the entire widget
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real_button_width = button_width + math.floor(button_width_to_add)
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button_width_to_add = button_width_to_add - math.floor(button_width_to_add)
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end
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local margin = button_margin
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local extra_border_size = 0
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local button = Button:new{
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text = "+",
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radius = 0,
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margin = margin,
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padding = button_padding,
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bordersize = button_bordersize + extra_border_size,
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enabled = true,
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width = real_button_width - 2*extra_border_size,
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preselect = false,
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text_font_face = self.font_face,
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text_font_size = self.font_size,
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callback = function()
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self.callback("+")
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self:update()
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end,
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no_focus = true,
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hold_callback = function()
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self.hold_callback("+")
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end,
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}
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if self.thin_grey_style then
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button.frame.color = Blitbuffer.COLOR_DARK_GRAY
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end
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table.insert(self.buttonprogress_content, self.horizontal_span)
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table.insert(self.buttonprogress_content, button)
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end
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-- More option button on the right
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if self.more_options then
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button_width_to_add = button_width_to_add + button_width_adjust
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local real_button_width = button_width
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if button_width_to_add >= 1 then
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-- One pixel wider to better align the entire widget
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real_button_width = button_width + math.floor(button_width_to_add)
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end
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local margin = button_margin
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local extra_border_size = 0
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local button = Button:new{
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text = "⋮",
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radius = 0,
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margin = margin,
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padding = button_padding,
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bordersize = button_bordersize + extra_border_size,
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enabled = true,
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width = real_button_width - 2*extra_border_size,
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preselect = false,
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text_font_face = self.font_face,
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text_font_size = self.font_size,
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callback = function()
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self.callback("⋮")
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self:update()
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end,
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no_focus = true,
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hold_callback = function()
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self.hold_callback("⋮")
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end,
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}
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if self.thin_grey_style then
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button.frame.color = Blitbuffer.COLOR_DARK_GRAY
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end
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table.insert(self.buttonprogress_content, self.horizontal_span)
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table.insert(self.buttonprogress_content, button)
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end
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UIManager:setDirty(self.show_parrent, function()
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return "ui", self.dimen
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end)
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end
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function ButtonProgressWidget:setPosition(position, default_position)
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self.position = position
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self.default_position = default_position
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self:update()
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end
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function ButtonProgressWidget:onFocus()
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self.buttonprogress_frame.background = Blitbuffer.COLOR_BLACK
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return true
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end
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function ButtonProgressWidget:onUnfocus()
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self.buttonprogress_frame.background = Blitbuffer.COLOR_WHITE
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return true
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end
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function ButtonProgressWidget:onTapSelect(arg, gev)
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if gev == nil then
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self:circlePosition()
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end
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end
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function ButtonProgressWidget:circlePosition()
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if self.position then
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self.position = self.position+1
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if self.position > self.num_buttons then
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self.position = 1
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end
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self.callback(self.position)
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self:update()
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end
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end
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return ButtonProgressWidget
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