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|
----------------------------------------------------------------------------
--- Notification library
--
-- @author koniu <gkusnierz@gmail.com>
-- @copyright 2008 koniu
-- @module naughty
----------------------------------------------------------------------------
-- Package environment
local pairs = pairs
local table = table
local type = type
local string = string
local pcall = pcall
local capi = { screen = screen,
awesome = awesome }
local timer = require("gears.timer")
local button = require("awful.button")
local screen = require("awful.screen")
local util = require("awful.util")
local bt = require("beautiful")
local wibox = require("wibox")
local surface = require("gears.surface")
local cairo = require("lgi").cairo
local dpi = require("beautiful").xresources.apply_dpi
local function get_screen(s)
return s and capi.screen[s]
end
local naughty = {}
--[[--
Naughty configuration - a table containing common popup settings.
@table naughty.config
@tfield[opt=apply_dpi(4)] int padding Space between popups and edge of the
workarea.
@tfield[opt=apply_dpi(1)] int spacing Spacing between popups.
@tfield[opt={"/usr/share/pixmaps/"}] table icon_dirs List of directories
that will be checked by `getIcon()`.
@tfield[opt={ "png", "gif" }] table icon_formats List of formats that will be
checked by `getIcon()`.
@tfield[opt] function notify_callback Callback used to modify or reject
notifications, e.g.
naughty.config.notify_callback = function(args)
args.text = 'prefix: ' .. args.text
return args
end
@tfield table presets Notification presets. See `config.presets`.
@tfield table defaults Default values for the params to `notify()`. These can
optionally be overridden by specifying a preset. See `config.defaults`.
--]]
--
naughty.config = {
padding = dpi(4),
spacing = dpi(1),
icon_dirs = { "/usr/share/pixmaps/", },
icon_formats = { "png", "gif" },
notify_callback = nil,
}
--- Notification presets for `naughty.notify`.
-- This holds presets for different purposes. A preset is a table of any
-- parameters for `notify()`, overriding the default values
-- (`naughty.config.defaults`).
--
-- You have to pass a reference of a preset in your `notify()` as the `preset`
-- argument.
--
-- The presets `"low"`, `"normal"` and `"critical"` are used for notifications
-- over DBUS.
--
-- @table config.presets
-- @tfield table low The preset for notifications with low urgency level.
-- @tfield[opt=5] int low.timeout
-- @tfield[opt=empty] table normal The default preset for every notification without a
-- preset that will also be used for normal urgency level.
-- @tfield table critical The preset for notifications with a critical urgency
-- level.
-- @tfield[opt="#ff0000"] string critical.bg
-- @tfield[opt="#ffffff"] string critical.fg
-- @tfield[opt=0] string critical.timeout
naughty.config.presets = {
low = {
timeout = 5
},
normal = {},
critical = {
bg = "#ff0000",
fg = "#ffffff",
timeout = 0,
}
}
--- Defaults for `naughty.notify`.
--
-- @table config.defaults
-- @tfield[opt=5] int timeout
-- @tfield[opt=""] string text
-- @tfield[opt] int screen Defaults to `awful.screen.focused`.
-- @tfield[opt=true] boolean ontop
-- @tfield[opt=apply_dpi(5)] int margin
-- @tfield[opt=apply_dpi(1)] int border_width
-- @tfield[opt="top_right"] string position
naughty.config.defaults = {
timeout = 5,
text = "",
screen = nil,
ontop = true,
margin = dpi(5),
border_width = dpi(1),
position = "top_right"
}
naughty.notificationClosedReason = {
silent = -1,
expired = 1,
dismissedByUser = 2,
dismissedByCommand = 3,
undefined = 4
}
-- Counter for the notifications
-- Required for later access via DBUS
local counter = 1
-- True if notifying is suspended
local suspended = false
--- Index of notifications per screen and position.
-- See config table for valid 'position' values.
-- Each element is a table consisting of:
--
-- @field box Wibox object containing the popup
-- @field height Popup height
-- @field width Popup width
-- @field die Function to be executed on timeout
-- @field id Unique notification id based on a counter
-- @table notifications
naughty.notifications = { suspended = { } }
screen.connect_for_each_screen(function(s)
naughty.notifications[s] = {
top_left = {},
top_middle = {},
top_right = {},
bottom_left = {},
bottom_middle = {},
bottom_right = {},
}
end)
capi.screen.connect_signal("removed", function(scr)
-- Destroy all notifications on this screen
for _, list in pairs(naughty.notifications[scr]) do
while #list > 0 do
naughty.destroy(list[1])
end
end
naughty.notifications[scr] = nil
end)
--- Notification state
function naughty.is_suspended()
return suspended
end
--- Suspend notifications
function naughty.suspend()
suspended = true
end
--- Resume notifications
function naughty.resume()
suspended = false
for _, v in pairs(naughty.notifications.suspended) do
v.box.visible = true
if v.timer then v.timer:start() end
end
naughty.notifications.suspended = { }
end
--- Toggle notification state
function naughty.toggle()
if suspended then
naughty.resume()
else
naughty.suspend()
end
end
--- Evaluate desired position of the notification by index - internal
--
-- @param s Screen to use
-- @param position top_right | top_left | bottom_right | bottom_left
-- | top_middle | bottom_middle
-- @param idx Index of the notification
-- @param[opt] width Popup width.
-- @param height Popup height
-- @return Absolute position and index in { x = X, y = Y, idx = I } table
local function get_offset(s, position, idx, width, height)
s = get_screen(s)
local ws = s.workarea
local v = {}
idx = idx or #naughty.notifications[s][position] + 1
width = width or naughty.notifications[s][position][idx].width
-- calculate x
if position:match("left") then
v.x = ws.x + naughty.config.padding
elseif position:match("middle") then
v.x = (ws.width / 2) - (width / 2)
else
v.x = ws.x + ws.width - (width + naughty.config.padding)
end
-- calculate existing popups' height
local existing = 0
for i = 1, idx-1, 1 do
existing = existing + naughty.notifications[s][position][i].height + naughty.config.spacing
end
-- calculate y
if position:match("top") then
v.y = ws.y + naughty.config.padding + existing
else
v.y = ws.y + ws.height - (naughty.config.padding + height + existing)
end
-- Find old notification to replace in case there is not enough room.
-- This tries to skip permanent notifications (without a timeout),
-- e.g. critical ones.
local find_old_to_replace = function()
for i = 1, idx-1 do
local n = naughty.notifications[s][position][i]
if n.timeout > 0 then
return n
end
end
-- Fallback to first one.
return naughty.notifications[s][position][1]
end
-- if positioned outside workarea, destroy oldest popup and recalculate
if v.y + height > ws.y + ws.height or v.y < ws.y then
naughty.destroy(find_old_to_replace())
idx = idx - 1
v = get_offset(s, position, idx, width, height)
end
if not v.idx then v.idx = idx end
return v
end
--- Re-arrange notifications according to their position and index - internal
--
-- @return None
local function arrange(s)
for p in pairs(naughty.notifications[s]) do
for i,notification in pairs(naughty.notifications[s][p]) do
local offset = get_offset(s, p, i, notification.width, notification.height)
notification.box:geometry({ x = offset.x, y = offset.y })
notification.idx = offset.idx
end
end
end
--- Destroy notification by notification object
--
-- @param notification Notification object to be destroyed
-- @param reason One of the reasons from notificationClosedReason
-- @return True if the popup was successfully destroyed, nil otherwise
function naughty.destroy(notification, reason)
if notification and notification.box.visible then
if suspended then
for k, v in pairs(naughty.notifications.suspended) do
if v.box == notification.box then
table.remove(naughty.notifications.suspended, k)
break
end
end
end
local scr = notification.screen
table.remove(naughty.notifications[scr][notification.position], notification.idx)
if notification.timer then
notification.timer:stop()
end
notification.box.visible = false
arrange(scr)
if notification.destroy_cb and reason ~= naughty.notificationClosedReason.silent then
notification.destroy_cb(reason or naughty.notificationClosedReason.undefined)
end
return true
end
end
--- Get notification by ID
--
-- @param id ID of the notification
-- @return notification object if it was found, nil otherwise
function naughty.getById(id)
-- iterate the notifications to get the notfications with the correct ID
for s in pairs(naughty.notifications) do
for p in pairs(naughty.notifications[s]) do
for _, notification in pairs(naughty.notifications[s][p]) do
if notification.id == id then
return notification
end
end
end
end
end
--- Install expiration timer for notification object.
-- @tparam notification notification Notification object.
-- @tparam number timeout Time in seconds to be set as expiration timeout.
local function set_timeout(notification, timeout)
local die = function (reason)
naughty.destroy(notification, reason)
end
if timeout > 0 then
local timer_die = timer { timeout = timeout }
timer_die:connect_signal("timeout", function() die(naughty.notificationClosedReason.expired) end)
if not suspended then
timer_die:start()
end
notification.timer = timer_die
end
notification.die = die
end
--- Set new notification timeout.
-- @tparam notification notification Notification object, which timer is to be reset.
-- @tparam number new_timeout Time in seconds after which notification disappears.
-- @return None.
function naughty.reset_timeout(notification, new_timeout)
if notification.timer then notification.timer:stop() end
local timeout = new_timeout or notification.timeout
set_timeout(notification, timeout)
notification.timeout = timeout
notification.timer:start()
end
--- Escape and set title and text for notification object.
-- @tparam notification notification Notification object.
-- @tparam string title Title of notification.
-- @tparam string text Main text of notification.
-- @return None.
local function set_text(notification, title, text)
local escape_pattern = "[<>&]"
local escape_subs = { ['<'] = "<", ['>'] = ">", ['&'] = "&" }
local textbox = notification.textbox
local function setMarkup(pattern, replacements)
return textbox:set_markup_silently(string.format('<b>%s</b>%s', title, text:gsub(pattern, replacements)))
end
local function setText()
textbox:set_text(string.format('%s %s', title, text))
end
-- Since the title cannot contain markup, it must be escaped first so that
-- it is not interpreted by Pango later.
title = title:gsub(escape_pattern, escape_subs)
-- Try to set the text while only interpreting <br>.
if not setMarkup("<br.->", "\n") then
-- That failed, escape everything which might cause an error from pango
if not setMarkup(escape_pattern, escape_subs) then
-- Ok, just ignore all pango markup. If this fails, we got some invalid utf8
if not pcall(setText) then
textbox:set_markup("<i><Invalid markup or UTF8, cannot display message></i>")
end
end
end
end
--- Replace title and text of an existing notification.
-- @tparam notification notification Notification object, which contents are to be replaced.
-- @tparam string new_title New title of notification. If not specified, old title remains unchanged.
-- @tparam string new_text New text of notification. If not specified, old text remains unchanged.
-- @return None.
function naughty.replace_text(notification, new_title, new_text)
local title = new_title
if title then title = title .. "\n" else title = "" end
set_text(notification, title, new_text)
end
--- Create a notification.
--
-- @tab args The argument table containing any of the arguments below.
-- @string[opt=""] args.text Text of the notification.
-- @string[opt] args.title Title of the notification.
-- @int[opt=5] args.timeout Time in seconds after which popup expires.
-- Set 0 for no timeout.
-- @int[opt] args.hover_timeout Delay in seconds after which hovered popup disappears.
-- @tparam[opt=focused] integer|screen args.screen Target screen for the notification.
-- @string[opt="top_right"] args.position Corner of the workarea displaying the popups.
-- Values: `"top_right"`, `"top_left"`, `"bottom_left"`,
-- `"bottom_right"`, `"top_middle"`, `"bottom_middle"`.
-- @bool[opt=true] args.ontop Boolean forcing popups to display on top.
-- @int[opt=auto] args.height Popup height.
-- @int[opt=auto] args.width Popup width.
-- @string[opt=beautiful.font or awesome.font] args.font Notification font.
-- @string[opt] args.icon Path to icon.
-- @int[opt] args.icon_size Desired icon size in px.
-- @string[opt=`beautiful.fg_focus` or `'#ffffff'`] args.fg Foreground color.
-- @string[opt=`beautiful.bg_focus` or `'#535d6c'`] args.bg Background color.
-- @int[opt=1] args.border_width Border width.
-- @string[opt=`beautiful.border_focus` or `'#535d6c'`] args.border_color Border color.
-- @tparam[opt] func args.run Function to run on left click. The notification
-- object will be passed to it as an argument.
-- You need to call e.g.
-- `notification.die(naughty.notificationClosedReason.dismissedByUser)` from
-- there to dismiss the notification yourself.
-- @tparam[opt] func args.destroy Function to run when notification is destroyed.
-- @tparam[opt] table args.preset Table with any of the above parameters.
-- Note: Any parameters specified directly in args will override ones defined
-- in the preset.
-- @tparam[opt] int args.replaces_id Replace the notification with the given ID.
-- @tparam[opt] func args.callback Function that will be called with all arguments.
-- The notification will only be displayed if the function returns true.
-- Note: this function is only relevant to notifications sent via dbus.
-- @tparam[opt] table args.actions Mapping that maps a string to a callback when this
-- action is selected.
-- @usage naughty.notify({ title = "Achtung!", text = "You're idling", timeout = 0 })
-- @treturn ?table The notification object, or nil in case a notification was
-- not displayed.
function naughty.notify(args)
if naughty.config.notify_callback then
args = naughty.config.notify_callback(args)
if not args then return end
end
-- gather variables together
local preset = util.table.join(naughty.config.defaults or {},
args.preset or naughty.config.presets.normal or {})
local timeout = args.timeout or preset.timeout
local icon = args.icon or preset.icon
local icon_size = args.icon_size or preset.icon_size
local text = args.text or preset.text
local title = args.title or preset.title
local s = get_screen(args.screen or preset.screen or screen.focused())
if not s then
local err = "naughty.notify: there is no screen available to display the following notification:"
err = string.format("%s title='%s' text='%s'", err, tostring(title or ""), tostring(text or ""))
require("gears.debug").print_warning(err)
return
end
local ontop = args.ontop or preset.ontop
local width = args.width or preset.width
local height = args.height or preset.height
local hover_timeout = args.hover_timeout or preset.hover_timeout
local opacity = args.opacity or preset.opacity
local margin = args.margin or preset.margin
local border_width = args.border_width or preset.border_width
local position = args.position or preset.position
local actions = args.actions
local destroy_cb = args.destroy
-- beautiful
local beautiful = bt.get()
local font = args.font or preset.font or beautiful.font or capi.awesome.font
local fg = args.fg or preset.fg or beautiful.fg_normal or '#ffffff'
local bg = args.bg or preset.bg or beautiful.bg_normal or '#535d6c'
local border_color = args.border_color or preset.border_color or beautiful.bg_focus or '#535d6c'
local notification = { screen = s, destroy_cb = destroy_cb, timeout = timeout }
-- replace notification if needed
if args.replaces_id then
local obj = naughty.getById(args.replaces_id)
if obj then
-- destroy this and ...
naughty.destroy(obj, naughty.notificationClosedReason.silent)
end
-- ... may use its ID
if args.replaces_id <= counter then
notification.id = args.replaces_id
else
counter = counter + 1
notification.id = counter
end
else
-- get a brand new ID
counter = counter + 1
notification.id = counter
end
notification.position = position
if title then title = title .. "\n" else title = "" end
-- hook destroy
set_timeout(notification, timeout)
local die = notification.die
local run = function ()
if args.run then
args.run(notification)
else
die(naughty.notificationClosedReason.dismissedByUser)
end
end
local hover_destroy = function ()
if hover_timeout == 0 then
die(naughty.notificationClosedReason.expired)
else
if notification.timer then notification.timer:stop() end
notification.timer = timer { timeout = hover_timeout }
notification.timer:connect_signal("timeout", function() die(naughty.notificationClosedReason.expired) end)
notification.timer:start()
end
end
-- create textbox
local textbox = wibox.widget.textbox()
local marginbox = wibox.container.margin()
marginbox:set_margins(margin)
marginbox:set_widget(textbox)
textbox:set_valign("middle")
textbox:set_font(font)
notification.textbox = textbox
set_text(notification, title, text)
local actionslayout = wibox.layout.fixed.vertical()
local actions_max_width = 0
local actions_total_height = 0
if actions then
for action, callback in pairs(actions) do
local actiontextbox = wibox.widget.textbox()
local actionmarginbox = wibox.container.margin()
actionmarginbox:set_margins(margin)
actionmarginbox:set_widget(actiontextbox)
actiontextbox:set_valign("middle")
actiontextbox:set_font(font)
actiontextbox:set_markup(string.format('☛ <u>%s</u>', action))
-- calculate the height and width
local w, h = actiontextbox:get_preferred_size(s)
local action_height = h + 2 * margin
local action_width = w + 2 * margin
actionmarginbox:buttons(util.table.join(
button({ }, 1, callback),
button({ }, 3, callback)
))
actionslayout:add(actionmarginbox)
actions_total_height = actions_total_height + action_height
if actions_max_width < action_width then
actions_max_width = action_width
end
end
end
-- create iconbox
local iconbox = nil
local iconmargin = nil
local icon_w, icon_h = 0, 0
if icon then
-- Is this really an URI instead of a path?
if type(icon) == "string" and string.sub(icon, 1, 7) == "file://" then
icon = string.sub(icon, 8)
end
-- try to guess icon if the provided one is non-existent/readable
if type(icon) == "string" and not util.file_readable(icon) then
icon = util.geticonpath(icon, naughty.config.icon_formats, naughty.config.icon_dirs, icon_size) or icon
end
-- is the icon file readable?
icon = surface.load_uncached(icon)
-- if we have an icon, use it
if icon then
iconbox = wibox.widget.imagebox()
iconmargin = wibox.container.margin(iconbox, margin, margin, margin, margin)
if icon_size then
local scaled = cairo.ImageSurface(cairo.Format.ARGB32, icon_size, icon_size)
local cr = cairo.Context(scaled)
cr:scale(icon_size / icon:get_height(), icon_size / icon:get_width())
cr:set_source_surface(icon, 0, 0)
cr:paint()
icon = scaled
end
iconbox:set_resize(false)
iconbox:set_image(icon)
icon_w = icon:get_width()
icon_h = icon:get_height()
end
end
-- create container wibox
notification.box = wibox({ fg = fg,
bg = bg,
border_color = border_color,
border_width = border_width,
type = "notification" })
if hover_timeout then notification.box:connect_signal("mouse::enter", hover_destroy) end
-- calculate the width
if not width then
local w, _ = textbox:get_preferred_size(s)
width = w + (iconbox and icon_w + 2 * margin or 0) + 2 * margin
end
if width < actions_max_width then
width = actions_max_width
end
-- calculate the height
if not height then
local w = width - (iconbox and icon_w + 2 * margin or 0) - 2 * margin
local h = textbox:get_height_for_width(w, s)
if iconbox and icon_h + 2 * margin > h + 2 * margin then
height = icon_h + 2 * margin
else
height = h + 2 * margin
end
end
height = height + actions_total_height
-- crop to workarea size if too big
local workarea = s.workarea
if width > workarea.width - 2 * (border_width or 0) - 2 * (naughty.config.padding or 0) then
width = workarea.width - 2 * (border_width or 0) - 2 * (naughty.config.padding or 0)
end
if height > workarea.height - 2 * (border_width or 0) - 2 * (naughty.config.padding or 0) then
height = workarea.height - 2 * (border_width or 0) - 2 * (naughty.config.padding or 0)
end
-- set size in notification object
notification.height = height + 2 * (border_width or 0)
notification.width = width + 2 * (border_width or 0)
-- position the wibox
local offset = get_offset(s, notification.position, nil, notification.width, notification.height)
notification.box.ontop = ontop
notification.box:geometry({ width = width,
height = height,
x = offset.x,
y = offset.y })
notification.box.opacity = opacity
notification.box.visible = true
notification.idx = offset.idx
-- populate widgets
local layout = wibox.layout.fixed.horizontal()
if iconmargin then
layout:add(iconmargin)
end
layout:add(marginbox)
local completelayout = wibox.layout.fixed.vertical()
completelayout:add(layout)
completelayout:add(actionslayout)
notification.box:set_widget(completelayout)
-- Setup the mouse events
layout:buttons(util.table.join(button({ }, 1, run),
button({ }, 3, function()
die(naughty.notificationClosedReason.dismissedByUser)
end)))
-- insert the notification to the table
table.insert(naughty.notifications[s][notification.position], notification)
if suspended then
notification.box.visible = false
table.insert(naughty.notifications.suspended, notification)
end
-- return the notification
return notification
end
return naughty
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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