103 lines
2.3 KiB
Lua
103 lines
2.3 KiB
Lua
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---------------------------------------------------------------------------
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-- @author Uli Schlachter
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-- @copyright 2010 Uli Schlachter
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-- @release @AWESOME_VERSION@
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---------------------------------------------------------------------------
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local oocairo = require("oocairo")
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local base = require("wibox.widget.base")
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local color = require("gears.color")
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local widget_base = require("wibox.widget.base")
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local setmetatable = setmetatable
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local pairs = pairs
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local type = type
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module("wibox.widget.background")
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--- Draw this widget
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function draw(box, wibox, cr, width, height)
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if not box.widget then
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return
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end
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cr:save()
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if box.background then
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cr:set_source(box.background)
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cr:paint()
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end
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if box.bgimage then
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local pattern = oocairo.pattern_create_for_surface(box.bgimage)
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cr:set_source(pattern)
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cr:paint()
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end
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cr:restore()
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box.widget:draw(wibox, cr, width, height)
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end
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--- Fit this widget into the given area
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function fit(box, width, height)
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if not box.widget then
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return 0, 0
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end
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return box.widget:fit(width, height)
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end
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--- Set the widget that is drawn on top of the background
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function set_widget(box, widget)
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if box.widget then
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box.widget:disconnect_signal("widget::updated", box._emit_updated)
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end
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if widget then
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widget_base.check_widget(widget)
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widget:connect_signal("widget::updated", box._emit_updated)
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end
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box.widget = widget
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box._emit_updated()
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end
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--- Set the background to use
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function set_bg(box, bg)
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if bg then
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box.background = color(bg)
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else
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box.background = nil
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end
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box._emit_updated()
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end
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--- Set the background image to use
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function set_bgimage(box, image)
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local image = image
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if type(image) == "string" then
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image = oocairo.image_surface_create_from_png(image)
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end
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box.bgimage = image
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box._emit_updated()
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end
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local function new()
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local ret = base.make_widget()
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for k, v in pairs(_M) do
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if type(v) == "function" then
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ret[k] = v
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end
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end
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ret._emit_updated = function()
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ret:emit_signal("widget::updated")
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end
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return ret
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end
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setmetatable(_M, { __call = function (_, ...) return new(...) end })
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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