130 lines
3.6 KiB
Lua
130 lines
3.6 KiB
Lua
---------------------------------------------------------------------------
|
|
-- @author dodo
|
|
-- @copyright 2012 dodo
|
|
-- @release @AWESOME_VERSION@
|
|
---------------------------------------------------------------------------
|
|
|
|
local type = type
|
|
local error = error
|
|
local pairs = pairs
|
|
local ipairs = ipairs
|
|
local setmetatable = setmetatable
|
|
local base = require("wibox.layout.base")
|
|
local widget_base = require("wibox.widget.base")
|
|
|
|
-- wibox.layout.mirror
|
|
local mirror = { mt = {} }
|
|
|
|
--- Draw this layout
|
|
function mirror.draw(layout, wibox, cr, width, height)
|
|
if not layout.widget then return { width = 0, height = 0 } end
|
|
if not layout.horizontal and not layout.vertical then
|
|
layout.widget:draw(wibox, cr, width, height)
|
|
return -- nothing changed
|
|
end
|
|
|
|
cr:save()
|
|
|
|
local t = { x = 0, y = 0 } -- translation
|
|
local s = { x = 1, y = 1 } -- scale
|
|
if layout.horizontal then
|
|
t.y = height
|
|
s.y = -1
|
|
end
|
|
if layout.vertical then
|
|
t.x = width
|
|
s.x = -1
|
|
end
|
|
cr:translate(t.x, t.y)
|
|
cr:scale(s.x, s.y)
|
|
|
|
layout.widget:draw(wibox, cr, width, height)
|
|
|
|
-- Undo the scale and translation from above.
|
|
cr:restore()
|
|
end
|
|
|
|
--- Fit this layout into the given area
|
|
function mirror.fit(layout, ...)
|
|
if not layout.widget then
|
|
return 0, 0
|
|
end
|
|
return layout.widget:fit(...)
|
|
end
|
|
|
|
--- Set the widget that this layout mirrors.
|
|
-- @param layout The layout
|
|
-- @param widget The widget to mirror
|
|
function mirror.set_widget(layout, widget)
|
|
if layout.widget then
|
|
layout.widget:disconnect_signal("widget::updated", layout._emit_updated)
|
|
end
|
|
if widget then
|
|
widget_base.check_widget(widget)
|
|
widget:connect_signal("widget::updated", layout._emit_updated)
|
|
end
|
|
layout.widget = widget
|
|
layout._emit_updated()
|
|
end
|
|
|
|
--- Reset this layout. The widget will be removed and the axes reset.
|
|
-- @param layout The layout
|
|
function mirror.reset(layout)
|
|
layout.horizontal = false
|
|
layout.vertical = false
|
|
layout:set_widget(nil)
|
|
end
|
|
|
|
--- Set the reflection of this mirror layout.
|
|
-- @param layout The layout
|
|
-- @param reflection a table which contains new values for horizontal and/or vertical (booleans)
|
|
function mirror.set_reflection(layout, reflection)
|
|
if type(reflection) ~= 'table' then
|
|
error("Invalid type of reflection for mirror layout: " ..
|
|
type(reflection) .. " (should be a table)")
|
|
end
|
|
for _, ref in ipairs({"horizontal", "vertical"}) do
|
|
if reflection[ref] ~= nil then
|
|
layout[ref] = reflection[ref]
|
|
end
|
|
end
|
|
layout._emit_updated()
|
|
end
|
|
|
|
--- Get the reflection of this mirror layout.
|
|
-- @param layout The layout
|
|
-- @return a table of booleans with the keys "horizontal", "vertical".
|
|
function mirror.get_reflection(layout)
|
|
return { horizontal = layout.horizontal, vertical = layout.vertical }
|
|
end
|
|
|
|
--- Returns a new mirror layout. A mirror layout mirrors a given widget. Use
|
|
-- :set_widget() to set the widget and
|
|
-- :set_horizontal() and :set_vertical() for the direction.
|
|
-- horizontal and vertical are by default false which doesn't change anything.
|
|
local function new()
|
|
local ret = widget_base.make_widget()
|
|
ret.horizontal = false
|
|
ret.vertical = false
|
|
|
|
for k, v in pairs(_M) do
|
|
if type(v) == "function" then
|
|
ret[k] = v
|
|
end
|
|
end
|
|
|
|
ret._emit_updated = function()
|
|
ret:emit_signal("widget::updated")
|
|
end
|
|
|
|
return ret
|
|
end
|
|
|
|
function mirror.mt:__call(...)
|
|
return new(...)
|
|
end
|
|
|
|
return setmetatable(mirror, mirror.mt)
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|