128 lines
3.5 KiB
Lua
128 lines
3.5 KiB
Lua
---------------------------------------------------------------------------
|
|
-- @author Uli Schlachter
|
|
-- @copyright 2010 Uli Schlachter
|
|
-- @release @AWESOME_VERSION@
|
|
---------------------------------------------------------------------------
|
|
|
|
local pairs = pairs
|
|
local type = type
|
|
local setmetatable = setmetatable
|
|
local base = require("wibox.layout.base")
|
|
local widget_base = require("wibox.widget.base")
|
|
|
|
module("wibox.layout.margin")
|
|
|
|
--- Draw a margin layout
|
|
function draw(layout, wibox, cr, width, height)
|
|
local x = layout.left
|
|
local y = layout.top
|
|
local w = layout.right
|
|
local h = layout.bottom
|
|
|
|
if not layout.widget or width <= x + w or height <= y + h then
|
|
return
|
|
end
|
|
|
|
base.draw_widget(wibox, cr, layout.widget, x, y, width - x - w, height - y - h)
|
|
end
|
|
|
|
--- Fit a margin layout into the given space
|
|
function fit(layout, width, height)
|
|
local extra_w = layout.left + layout.right
|
|
local extra_h = layout.top + layout.bottom
|
|
local w, h = 0, 0
|
|
if layout.widget then
|
|
w, h = layout.widget:fit(width - extra_w, height - extra_h)
|
|
end
|
|
return w + extra_w, h + extra_h
|
|
end
|
|
|
|
--- Set the widget that this layout adds a margin on.
|
|
function 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
|
|
|
|
--- Set all the margins to val.
|
|
function set_margins(layout, val)
|
|
layout.left = val
|
|
layout.right = val
|
|
layout.top = val
|
|
layout.bottom = val
|
|
layout:emit_signal("widget::updated")
|
|
end
|
|
|
|
--- Reset this layout. The widget will be unreferenced and the margins set to 0.
|
|
function reset(layout)
|
|
layout:set_widget(nil)
|
|
layout:set_margins(0)
|
|
end
|
|
|
|
--- Set the left margin that this layout adds to its widget.
|
|
-- @param layout The layout you are modifying.
|
|
-- @param margin The new margin to use.
|
|
-- @name set_left
|
|
-- @class function
|
|
|
|
--- Set the right margin that this layout adds to its widget.
|
|
-- @param layout The layout you are modifying.
|
|
-- @param margin The new margin to use.
|
|
-- @name set_right
|
|
-- @class function
|
|
|
|
--- Set the top margin that this layout adds to its widget.
|
|
-- @param layout The layout you are modifying.
|
|
-- @param margin The new margin to use.
|
|
-- @name set_top
|
|
-- @class function
|
|
|
|
--- Set the bottom margin that this layout adds to its widget.
|
|
-- @param layout The layout you are modifying.
|
|
-- @param margin The new margin to use.
|
|
-- @name set_bottom
|
|
-- @class function
|
|
|
|
-- Create setters for each direction
|
|
for k, v in pairs({ "left", "right", "top", "bottom" }) do
|
|
_M["set_" .. v] = function(layout, val)
|
|
layout[v] = val
|
|
layout:emit_signal("widget::updated")
|
|
end
|
|
end
|
|
|
|
--- Returns a new margin layout.
|
|
-- @param widget A widget to use (optional)
|
|
-- @param margin A margin to use on every side of the widget (optional)
|
|
local function new(widget, margin)
|
|
local ret = widget_base.make_widget()
|
|
|
|
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
|
|
|
|
ret:set_margins(margin or 0)
|
|
|
|
if widget then
|
|
ret:set_widget(widget)
|
|
end
|
|
|
|
return ret
|
|
end
|
|
|
|
setmetatable(_M, { __call = function(_, ...) return new(...) end })
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|