awesome/lib/wibox/widget/checkbox.lua

252 lines
7.2 KiB
Lua

---------------------------------------------------------------------------
-- A boolean display widget.
--
-- If necessary, themes can implement custom shape:
--
--@DOC_wibox_widget_checkbox_custom_EXAMPLE@
--
--@DOC_wibox_widget_defaults_checkbox_EXAMPLE@
-- @author Emmanuel Lepage Valle
-- @copyright 2010 Emmanuel Lepage Vallee
-- @widgetmod wibox.widget.checkbox
---------------------------------------------------------------------------
local color = require( "gears.color" )
local base = require( "wibox.widget.base" )
local beautiful = require( "beautiful" )
local shape = require( "gears.shape" )
local gtable = require( "gears.table" )
local checkbox = {}
--- The outer (unchecked area) border width.
-- @beautiful beautiful.checkbox_border_width
--- The outer (unchecked area) background color, pattern or gradient.
-- @beautiful beautiful.checkbox_bg
--- The outer (unchecked area) border color.
-- @beautiful beautiful.checkbox_border_color
--- The checked part border color.
-- @beautiful beautiful.checkbox_check_border_color
--- The checked part border width.
-- @beautiful beautiful.checkbox_check_border_width
--- The checked part filling color.
-- @beautiful beautiful.checkbox_check_color
--- The outer (unchecked area) shape.
-- @beautiful beautiful.checkbox_shape
-- @see gears.shape
--- The checked part shape.
-- If none is set, then the `shape` property will be used.
-- @beautiful beautiful.checkbox_check_shape
-- @see gears.shape
--- The padding between the outline and the progressbar.
-- @beautiful beautiful.checkbox_paddings
-- @tparam[opt=0] table|number paddings A number or a table
-- @tparam[opt=0] number paddings.top
-- @tparam[opt=0] number paddings.bottom
-- @tparam[opt=0] number paddings.left
-- @tparam[opt=0] number paddings.right
--- The checkbox color.
-- This will be used for the unchecked part border color and the checked part
-- filling color. Note that `check_color` and `border_color` have priority
-- over this property.
-- @beautiful beautiful.checkbox_color
--- The outer (unchecked area) border width.
-- @property border_width
--- The outer (unchecked area) background color, pattern or gradient.
--@DOC_wibox_widget_checkbox_bg_EXAMPLE@
-- @property bg
--- The outer (unchecked area) border color.
-- @property border_color
--- The checked part border color.
-- @property check_border_color
--- The checked part border width.
-- @property check_border_width
--- The checked part filling color.
-- @property check_color
--- The outer (unchecked area) shape.
--@DOC_wibox_widget_checkbox_shape_EXAMPLE@
-- @property shape
-- @see gears.shape
--- The checked part shape.
-- If none is set, then the `shape` property will be used.
--@DOC_wibox_widget_checkbox_check_shape_EXAMPLE@
-- @property check_shape
-- @see gears.shape
--- The padding between the outline and the progressbar.
-- @property paddings
-- @tparam[opt=0] table|number paddings A number or a table
-- @tparam[opt=0] number paddings.top
-- @tparam[opt=0] number paddings.bottom
-- @tparam[opt=0] number paddings.left
-- @tparam[opt=0] number paddings.right
--- The checkbox color.
-- This will be used for the unchecked part border color and the checked part
-- filling color. Note that `check_color` and `border_color` have priority
-- over this property.
-- @property color
local function outline_workarea(self, width, height)
local offset = (self._private.border_width or
beautiful.checkbox_border_width or 1)/2
return {
x = offset,
y = offset,
width = width-2*offset,
height = height-2*offset
}
end
-- The child widget area
local function content_workarea(self, width, height)
local padding = self._private.paddings or {}
local offset = self:get_check_border_width() or 0
local wa = outline_workarea(self, width, height)
wa.x = offset + wa.x + (padding.left or 1)
wa.y = offset + wa.y + (padding.top or 1)
wa.width = wa.width - (padding.left or 1) - (padding.right or 1) - 2*offset
wa.height = wa.height - (padding.top or 1) - (padding.bottom or 1) - 2*offset
return wa
end
local function draw(self, _, cr, width, height)
local size = math.min(width, height)
local background_shape = self:get_shape() or shape.rectangle
local border_width = self:get_border_width() or 1
local main_color = self:get_color()
local bg = self:get_bg()
local border_color = self:get_border_color()
-- If no color is set, it will fallback to the default one
if border_color or main_color then
cr:set_source(color(border_color or main_color))
end
local wa = outline_workarea(self, size, size)
cr:translate(wa.x, wa.y)
background_shape(cr, wa.width, wa.height)
cr:set_line_width(border_width)
if bg then
cr:save()
cr:set_source(color(bg))
cr:fill_preserve()
cr:restore()
end
cr:stroke()
cr:translate(-wa.x, -wa.y)
-- Draw the checked part
if self._private.checked then
local col = self:get_check_color() or main_color
border_color = self:get_check_border_color()
border_width = self:get_check_border_width() or 0
local check_shape = self:get_check_shape() or background_shape
wa = content_workarea(self, size, size)
cr:translate(wa.x, wa.y)
check_shape(cr, wa.width, wa.height)
if col then
cr:set_source(color(col))
end
if border_width > 0 then
cr:fill_preserve()
cr:set_line_width(border_width)
cr:set_source(color(border_color))
cr:stroke()
else
cr:fill()
end
end
end
local function fit(_, _, w, h)
local size = math.min(w, h)
return size, size
end
--- If the checkbox is checked.
-- @property checked
-- @param boolean
for _, prop in ipairs {"border_width", "bg", "border_color", "check_border_color",
"check_border_width", "check_color", "shape", "check_shape", "paddings",
"checked", "color" } do
checkbox["set_"..prop] = function(self, value)
self._private[prop] = value
self:emit_signal("property::"..prop)
self:emit_signal("widget::redraw_needed")
end
checkbox["get_"..prop] = function(self)
return self._private[prop] or beautiful["checkbox_"..prop]
end
end
--- The checkbox color.
-- @property color
function checkbox:set_paddings(val)
self._private.paddings = type(val) == "number" and {
left = val,
right = val,
top = val,
bottom = val,
} or val or {}
self:emit_signal("property::paddings")
self:emit_signal("widget::redraw_needed")
end
local function new(checked, args)
checked, args = checked or false, args or {}
local ret = base.make_widget(nil, nil, {
enable_properties = true,
})
gtable.crush(ret, checkbox)
ret._private.checked = checked
ret._private.color = args.color and color(args.color) or nil
rawset(ret, "fit" , fit )
rawset(ret, "draw", draw)
return ret
end
--@DOC_widget_COMMON@
--@DOC_object_COMMON@
return setmetatable({}, { __call = function(_, ...) return new(...) end})
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80