137 lines
3.8 KiB
Lua
137 lines
3.8 KiB
Lua
---------------------------------------------------------------------------
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-- Reflect a widget along one or both axis.
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--
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--@DOC_wibox_container_defaults_mirror_EXAMPLE@
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-- @author dodo
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-- @copyright 2012 dodo
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-- @containermod wibox.container.mirror
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-- @supermodule wibox.widget.base
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---------------------------------------------------------------------------
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local type = type
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local error = error
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local ipairs = ipairs
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local setmetatable = setmetatable
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local base = require("wibox.widget.base")
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local matrix = require("gears.matrix")
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local gtable = require("gears.table")
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local mirror = { mt = {} }
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-- Layout this layout
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function mirror:layout(_, width, height)
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if not self._private.widget then return end
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local m = matrix.identity
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local t = { x = 0, y = 0 } -- translation
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local s = { x = 1, y = 1 } -- scale
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if self._private.horizontal then
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t.x = width
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s.x = -1
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end
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if self._private.vertical then
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t.y = height
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s.y = -1
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end
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m = m:translate(t.x, t.y)
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m = m:scale(s.x, s.y)
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return { base.place_widget_via_matrix(self._private.widget, m, width, height) }
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end
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-- Fit this layout into the given area.
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function mirror:fit(context, ...)
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if not self._private.widget then
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return 0, 0
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end
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return base.fit_widget(self, context, self._private.widget, ...)
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end
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--- The widget to be reflected.
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--
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-- @property widget
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-- @tparam[opt=nil] widget|nil widget
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-- @interface container
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mirror.set_widget = base.set_widget_common
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function mirror:get_widget()
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return self._private.widget
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end
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function mirror:get_children()
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return {self._private.widget}
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end
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function mirror:set_children(children)
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self:set_widget(children[1])
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end
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--- Reset this layout. The widget will be removed and the axes reset.
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--
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-- @method reset
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-- @noreturn
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-- @interface container
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function mirror:reset()
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self._private.horizontal = false
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self._private.vertical = false
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self:set_widget(nil)
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end
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function mirror:set_reflection(reflection)
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if type(reflection) ~= 'table' then
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error("Invalid type of reflection for mirror layout: " ..
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type(reflection) .. " (should be a table)")
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end
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for _, ref in ipairs({"horizontal", "vertical"}) do
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if reflection[ref] ~= nil then
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self._private[ref] = reflection[ref]
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end
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end
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self:emit_signal("widget::layout_changed")
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self:emit_signal("property::reflection", reflection)
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end
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--- Get the reflection of this mirror layout.
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--
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-- @property reflection
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-- @tparam table reflection A table of booleans with the keys "horizontal", "vertical".
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-- @tparam[opt=false] boolean reflection.horizontal
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-- @tparam[opt=false] boolean reflection.vertical
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-- @propemits true false
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function mirror:get_reflection()
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return { horizontal = self._private.horizontal, vertical = self._private.vertical }
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end
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--- Returns a new mirror container.
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--
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-- A mirror container mirrors a given widget. Use the `widget` property to set
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-- the widget and `reflection` property to set the direction.
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-- horizontal and vertical are by default false which doesn't change anything.
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--
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-- @tparam[opt] widget widget The widget to display.
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-- @tparam[opt] table reflection A table describing the reflection to apply.
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-- @treturn table A new mirror container
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-- @constructorfct wibox.container.mirror
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local function new(widget, reflection)
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local ret = base.make_widget(nil, nil, {enable_properties = true})
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ret._private.horizontal = false
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ret._private.vertical = false
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gtable.crush(ret, mirror, true)
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ret:set_widget(widget)
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ret:set_reflection(reflection or {})
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return ret
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end
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function mirror.mt:__call(...)
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return new(...)
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end
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return setmetatable(mirror, mirror.mt)
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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