446 lines
12 KiB
Lua
446 lines
12 KiB
Lua
---------------------------------------------------------------------------
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-- @author Uli Schlachter
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-- @copyright 2010 Uli Schlachter
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-- @popupmod wibox
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---------------------------------------------------------------------------
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local capi = {
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drawin = drawin,
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root = root,
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awesome = awesome,
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screen = screen
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}
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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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local object = require("gears.object")
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local grect = require("gears.geometry").rectangle
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local beautiful = require("beautiful")
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local base = require("wibox.widget.base")
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local cairo = require("lgi").cairo
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--- This provides widget box windows. Every wibox can also be used as if it were
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-- a drawin. All drawin functions and properties are also available on wiboxes!
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-- wibox
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local wibox = { mt = {}, object = {} }
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wibox.layout = require("wibox.layout")
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wibox.container = require("wibox.container")
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wibox.widget = require("wibox.widget")
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wibox.drawable = require("wibox.drawable")
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wibox.hierarchy = require("wibox.hierarchy")
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local force_forward = {
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shape_bounding = true,
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shape_clip = true,
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shape_input = true,
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}
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--@DOC_wibox_COMMON@
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function wibox:set_widget(widget)
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local w = base.make_widget_from_value(widget)
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self._drawable:set_widget(w)
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self:emit_signal("property::widget", widget)
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end
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function wibox:get_widget()
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return self._drawable.widget
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end
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wibox.setup = base.widget.setup
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function wibox:set_bg(c)
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self._drawable:set_bg(c)
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self:emit_signal("property::bg", c)
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end
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function wibox:set_bgimage(image, ...)
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self._drawable:set_bgimage(image, ...)
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self:emit_signal("property::bgimage", ...)
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end
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function wibox:set_fg(c)
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self._drawable:set_fg(c)
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self:emit_signal("property::fg", c)
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end
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function wibox:find_widgets(x, y)
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return self._drawable:find_widgets(x, y)
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end
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function wibox:_buttons(btns)
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-- The C code uses the argument count, `nil` counts.
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return btns and self.drawin:_buttons(btns) or self.drawin:_buttons()
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end
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--- Create a widget that reflects the current state of this wibox.
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-- @treturn widget A new widget.
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-- @method to_widget
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function wibox:to_widget()
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local bw = self.border_width or beautiful.border_width or 0
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return wibox.widget {
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{
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self:get_widget(),
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margins = bw,
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widget = wibox.container.margin
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},
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bg = self.bg or beautiful.bg_normal or "#ffffff",
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fg = self.fg or beautiful.fg_normal or "#000000",
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shape_border_color = self.border_color or beautiful.border_color or "#000000",
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shape_border_width = bw*2,
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shape_clip = true,
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shape = self._shape,
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forced_width = self:geometry().width + 2*bw,
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forced_height = self:geometry().height + 2*bw,
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widget = wibox.container.background
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}
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end
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--- Save a screenshot of the wibox to `path`.
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-- @tparam string path The path.
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-- @tparam[opt=nil] table context A widget context.
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-- @method save_to_svg
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function wibox:save_to_svg(path, context)
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wibox.widget.draw_to_svg_file(
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self:to_widget(), path, self:geometry().width, self:geometry().height, context
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)
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end
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function wibox:_apply_shape()
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local shape = self._shape
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if not shape then
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self.shape_bounding = nil
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self.shape_clip = nil
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return
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end
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local geo = self:geometry()
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local bw = self.border_width
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-- First handle the bounding shape (things including the border)
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local img = cairo.ImageSurface(cairo.Format.A1, geo.width + 2*bw, geo.height + 2*bw)
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local cr = cairo.Context(img)
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-- We just draw the shape in its full size
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shape(cr, geo.width + 2*bw, geo.height + 2*bw)
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cr:set_operator(cairo.Operator.SOURCE)
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cr:fill()
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self.shape_bounding = img._native
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img:finish()
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-- Now handle the clip shape (things excluding the border)
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img = cairo.ImageSurface(cairo.Format.A1, geo.width, geo.height)
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cr = cairo.Context(img)
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-- We give the shape the same arguments as for the bounding shape and draw
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-- it in its full size (the translate is to compensate for the smaller
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-- surface)
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cr:translate(-bw, -bw)
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shape(cr, geo.width + 2*bw, geo.height + 2*bw)
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cr:set_operator(cairo.Operator.SOURCE)
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cr:fill_preserve()
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-- Now we remove an area of width 'bw' again around the shape (We use 2*bw
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-- since half of that is on the outside and only half on the inside)
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cr:set_source_rgba(0, 0, 0, 0)
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cr:set_line_width(2*bw)
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cr:stroke()
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self.shape_clip = img._native
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img:finish()
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end
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function wibox:set_shape(shape)
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self._shape = shape
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self:_apply_shape()
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self:emit_signal("property::shape", shape)
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end
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function wibox:get_shape()
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return self._shape
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end
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function wibox:set_input_passthrough(value)
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rawset(self, "_input_passthrough", value)
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if not value then
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self.shape_input = nil
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else
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local img = cairo.ImageSurface(cairo.Format.A1, 0, 0)
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self.shape_input = img._native
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img:finish()
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end
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self:emit_signal("property::input_passthrough", value)
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end
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function wibox:get_input_passthrough()
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return self._input_passthrough
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end
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function wibox:get_screen()
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if self.screen_assigned and self.screen_assigned.valid then
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return self.screen_assigned
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else
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self.screen_assigned = nil
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end
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local sgeos = {}
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for s in capi.screen do
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sgeos[s] = s.geometry
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end
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return grect.get_closest_by_coord(sgeos, self.x, self.y)
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end
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function wibox:set_screen(s)
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s = capi.screen[s or 1]
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if s ~= self:get_screen() then
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self.x = s.geometry.x
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self.y = s.geometry.y
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end
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-- Remember this screen so things work correctly if screens overlap and
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-- (x,y) is not enough to figure out the correct screen.
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self.screen_assigned = s
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self._drawable:_force_screen(s)
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self:emit_signal("property::screen", s)
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end
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function wibox:get_children_by_id(name)
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--TODO v5: Move the ID management to the hierarchy.
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if rawget(self, "_by_id") then
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--TODO v5: Remove this, it's `if` nearly dead code, keep the `elseif`
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return rawget(self, "_by_id")[name]
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elseif self._drawable.widget
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and self._drawable.widget._private
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and self._drawable.widget._private.by_id then
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return self._drawable.widget._private.by_id[name]
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end
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return {}
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end
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-- Proxy those properties to decorate their accessors with an extra flag to
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-- define when they are set by the user. This allows to "manage" the value of
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-- those properties internally until they are manually overridden.
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for _, prop in ipairs { "border_width", "border_color", "opacity" } do
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wibox["get_"..prop] = function(self)
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return self["_"..prop]
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end
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wibox["set_"..prop] = function(self, value)
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self._private["_user_"..prop] = true
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self["_"..prop] = value
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end
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end
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for _, k in ipairs{ "struts", "geometry", "get_xproperty", "set_xproperty" } do
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wibox[k] = function(self, ...)
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return self.drawin[k](self.drawin, ...)
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end
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end
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object.properties._legacy_accessors(wibox.object, "buttons", "_buttons", true, function(new_btns)
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return new_btns[1] and (
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type(new_btns[1]) == "button" or new_btns[1]._is_capi_button
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) or false
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end, true)
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local function setup_signals(_wibox)
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local obj
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local function clone_signal(name)
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-- When "name" is emitted on wibox.drawin, also emit it on wibox
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obj:connect_signal(name, function(_, ...)
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_wibox:emit_signal(name, ...)
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end)
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end
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obj = _wibox.drawin
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clone_signal("property::border_color")
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clone_signal("property::border_width")
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clone_signal("property::buttons")
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clone_signal("property::cursor")
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clone_signal("property::height")
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clone_signal("property::ontop")
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clone_signal("property::opacity")
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clone_signal("property::struts")
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clone_signal("property::visible")
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clone_signal("property::width")
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clone_signal("property::x")
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clone_signal("property::y")
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clone_signal("property::geometry")
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clone_signal("property::shape_bounding")
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clone_signal("property::shape_clip")
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clone_signal("property::shape_input")
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obj = _wibox._drawable
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clone_signal("button::press")
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clone_signal("button::release")
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clone_signal("mouse::enter")
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clone_signal("mouse::leave")
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clone_signal("mouse::move")
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clone_signal("property::surface")
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end
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--- Create a wibox.
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-- @tparam[opt=nil] table args
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--@DOC_wibox_constructor_COMMON@
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-- @treturn wibox The new wibox
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-- @constructorfct wibox
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local function new(args)
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args = args or {}
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local ret = object()
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local w = capi.drawin(args)
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function w.get_wibox()
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return ret
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end
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ret.drawin = w
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ret._drawable = wibox.drawable(w.drawable, { wibox = ret },
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"wibox drawable (" .. object.modulename(3) .. ")")
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function ret._drawable.get_wibox()
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return ret
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end
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ret._drawable:_inform_visible(w.visible)
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w:connect_signal("property::visible", function()
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ret._drawable:_inform_visible(w.visible)
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end)
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--TODO v5 deprecate this and use `wibox.object`.
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for k, v in pairs(wibox) do
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if (not rawget(ret, k)) and 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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setup_signals(ret)
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ret.draw = ret._drawable.draw
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-- Set the default background
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ret:set_bg(args.bg or beautiful.bg_normal)
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ret:set_fg(args.fg or beautiful.fg_normal)
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-- Add __tostring method to metatable.
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local mt = {}
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local orig_string = tostring(ret)
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mt.__tostring = function()
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return string.format("wibox: %s (%s)",
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tostring(ret._drawable), orig_string)
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end
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ret = setmetatable(ret, mt)
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-- Make sure the wibox is drawn at least once
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ret.draw()
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ret:connect_signal("property::geometry", ret._apply_shape)
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ret:connect_signal("property::border_width", ret._apply_shape)
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-- If a value is not found, look in the drawin
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setmetatable(ret, {
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__index = function(self, k)
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if rawget(self, "get_"..k) then
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return self["get_"..k](self)
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else
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return w[k]
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end
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end,
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__newindex = function(self, k,v)
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if rawget(self, "set_"..k) then
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self["set_"..k](self, v)
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elseif force_forward[k] or w[k] ~= nil then
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w[k] = v
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else
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rawset(self, k, v)
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end
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end
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})
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-- Set other wibox specific arguments
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if args.bgimage then
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ret:set_bgimage( args.bgimage )
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end
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if args.widget then
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ret:set_widget ( args.widget )
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end
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if args.screen then
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ret:set_screen ( args.screen )
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end
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if args.shape then
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ret.shape = args.shape
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end
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if args.border_width then
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ret.border_width = args.border_width
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end
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if args.border_color then
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ret.border_color = args.border_color
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end
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if args.input_passthrough then
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ret.input_passthrough = args.input_passthrough
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end
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-- Make sure all signals bubble up
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ret:_connect_everything(wibox.emit_signal)
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return ret
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end
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--- Redraw a wibox. You should never have to call this explicitely because it is
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-- automatically called when needed.
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-- @param wibox
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-- @method draw
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--- Connect a global signal on the wibox class.
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--
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-- Functions connected to this signal source will be executed when any
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-- wibox object emits the signal.
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--
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-- It is also used for some generic wibox signals such as
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-- `request::geometry`.
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--
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-- @tparam string name The name of the signal
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-- @tparam function func The function to attach
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-- @staticfct wibox.connect_signal
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-- @usage wibox.connect_signal("added", function(notif)
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-- -- do something
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-- end)
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--- Emit a wibox signal.
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-- @tparam string name The signal name.
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-- @param ... The signal callback arguments
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-- @staticfct wibox.emit_signal
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--- Disconnect a signal from a source.
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-- @tparam string name The name of the signal
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-- @tparam function func The attached function
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-- @staticfct wibox.disconnect_signal
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-- @treturn boolean If the disconnection was successful
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function wibox.mt:__call(...)
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return new(...)
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end
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-- Extend the luaobject
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object.properties(capi.drawin, {
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getter_class = wibox.object,
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setter_class = wibox.object,
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auto_emit = true,
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})
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capi.drawin.object = wibox.object
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object._setup_class_signals(wibox)
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return setmetatable(wibox, wibox.mt)
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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