666 lines
23 KiB
Lua
666 lines
23 KiB
Lua
----------------------------------------------------------------------------
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--- Notification library
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--
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-- @author koniu <gkusnierz@gmail.com>
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-- @copyright 2008 koniu
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-- @release @AWESOME_VERSION@
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-- @module naughty
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----------------------------------------------------------------------------
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-- Package environment
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local pairs = pairs
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local table = table
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local type = type
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local string = string
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local tostring = tostring
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local pcall = pcall
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local capi = { screen = screen,
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awesome = awesome }
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local timer = require("gears.timer")
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local button = require("awful.button")
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local util = require("awful.util")
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local bt = require("beautiful")
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local wibox = require("wibox")
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local surface = require("gears.surface")
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local cairo = require("lgi").cairo
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local schar = string.char
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local sbyte = string.byte
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local tcat = table.concat
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local tins = table.insert
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local naughty = {}
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--[[--
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Naughty configuration - a table containing common popup settings.
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@table naughty.config
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@field padding Space between popups and edge of the workarea.
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Default: `4`
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@field spacing Spacing between popups.
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Default: `1`
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@field icon_dirs List of directories that will be checked by `getIcon()`.
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Default: `{ "/usr/share/pixmaps/", }`
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@field icon_formats List of formats that will be checked by `getIcon()`.
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Default: `{ "png", "gif" }`
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@field notify_callback Callback used to modify or reject notifications.
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Default: `nil`
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naughty.config.notify_callback = function(args)
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args.text = 'prefix: ' .. args.text
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return args
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end
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@field presets Notification Presets - a table containing presets for
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different purposes. Preset is a table of any parameters available to
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`notify()`, overriding default values (`naughty.config.defaults`) You have
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to pass a reference of a preset in your notify() call to use the preset The
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presets `"low"`, `"normal"` and `"critical"` are used for notifications
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over DBUS.
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@field presets.low The preset for notifications with low urgency level.
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@field presets.normal The default preset for every notification without a
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preset that will also be used for normal urgency level.
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@field presets.critical The preset for notifications with a critical urgency
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level.
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@field defaults Default values for the params to `notify()`.
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These can optionally be overridden by specifying a preset.
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@field mapping DBUS notification to preset mapping.
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The first element is an object containing the filter If the rules in the
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filter matches the associated preset will be applied The rules object can
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contain: urgency, category, appname The second element is the preset
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@field mapping.1 low urgency
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@field mapping.2 normal urgency
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@field mapping.3 critical urgency
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--]]
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--
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naughty.config = {
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padding = 4,
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spacing = 1,
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icon_dirs = { "/usr/share/pixmaps/", },
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icon_formats = { "png", "gif" },
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notify_callback = nil,
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}
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naughty.config.presets = {
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low = {
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timeout = 5
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},
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normal = {},
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critical = {
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bg = "#ff0000",
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fg = "#ffffff",
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timeout = 0,
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}
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}
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naughty.config.defaults = {
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timeout = 5,
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text = "",
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screen = 1,
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ontop = true,
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margin = "5",
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border_width = "1",
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position = "top_right"
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}
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naughty.notificationClosedReason = {
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silent = -1,
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expired = 1,
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dismissedByUser = 2,
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dismissedByCommand = 3,
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undefined = 4
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}
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-- Counter for the notifications
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-- Required for later access via DBUS
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local counter = 1
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-- True if notifying is suspended
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local suspended = false
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--- Index of notifications per screen and position.
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-- See config table for valid 'position' values.
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-- Each element is a table consisting of:
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--
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-- @field box Wibox object containing the popup
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-- @field height Popup height
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-- @field width Popup width
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-- @field die Function to be executed on timeout
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-- @field id Unique notification id based on a counter
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-- @table notifications
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naughty.notifications = { suspended = { } }
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for s = 1, capi.screen.count() do
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naughty.notifications[s] = {
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top_left = {},
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top_middle = {},
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top_right = {},
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bottom_left = {},
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bottom_middle = {},
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bottom_right = {},
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}
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end
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--- Notification state
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function naughty.is_suspended()
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return suspended
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end
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--- Suspend notifications
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function naughty.suspend()
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suspended = true
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end
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--- Resume notifications
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function naughty.resume()
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suspended = false
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for i, v in pairs(naughty.notifications.suspended) do
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v.box.visible = true
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if v.timer then v.timer:start() end
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end
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naughty.notifications.suspended = { }
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end
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--- Toggle notification state
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function naughty.toggle()
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if suspended then
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naughty.resume()
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else
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naughty.suspend()
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end
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end
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--- Evaluate desired position of the notification by index - internal
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--
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-- @param screen Screen to use
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-- @param position top_right | top_left | bottom_right | bottom_left
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-- | top_middle | bottom_middle
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-- @param idx Index of the notification
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-- @param[opt] width Popup width.
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-- @param height Popup height
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-- @return Absolute position and index in { x = X, y = Y, idx = I } table
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local function get_offset(screen, position, idx, width, height)
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local ws = capi.screen[screen].workarea
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local v = {}
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local idx = idx or #naughty.notifications[screen][position] + 1
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local width = width or naughty.notifications[screen][position][idx].width
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-- calculate x
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if position:match("left") then
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v.x = ws.x + naughty.config.padding
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elseif position:match("middle") then
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v.x = (ws.width / 2) - (width / 2)
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else
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v.x = ws.x + ws.width - (width + naughty.config.padding)
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end
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-- calculate existing popups' height
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local existing = 0
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for i = 1, idx-1, 1 do
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existing = existing + naughty.notifications[screen][position][i].height + naughty.config.spacing
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end
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-- calculate y
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if position:match("top") then
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v.y = ws.y + naughty.config.padding + existing
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else
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v.y = ws.y + ws.height - (naughty.config.padding + height + existing)
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end
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-- if positioned outside workarea, destroy oldest popup and recalculate
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if v.y + height > ws.y + ws.height or v.y < ws.y then
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idx = idx - 1
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naughty.destroy(naughty.notifications[screen][position][1])
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v = get_offset(screen, position, idx, width, height)
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end
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if not v.idx then v.idx = idx end
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return v
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end
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--- Re-arrange notifications according to their position and index - internal
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--
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-- @return None
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local function arrange(screen)
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for p,pos in pairs(naughty.notifications[screen]) do
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for i,notification in pairs(naughty.notifications[screen][p]) do
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local offset = get_offset(screen, p, i, notification.width, notification.height)
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notification.box:geometry({ x = offset.x, y = offset.y })
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notification.idx = offset.idx
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end
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end
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end
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--- Destroy notification by notification object
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--
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-- @param notification Notification object to be destroyed
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-- @param reason One of the reasons from notificationClosedReason
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-- @return True if the popup was successfully destroyed, nil otherwise
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function naughty.destroy(notification, reason)
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if notification and notification.box.visible then
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if suspended then
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for k, v in pairs(naughty.notifications.suspended) do
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if v.box == notification.box then
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table.remove(naughty.notifications.suspended, k)
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break
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end
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end
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end
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local scr = notification.screen
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table.remove(naughty.notifications[scr][notification.position], notification.idx)
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if notification.timer then
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notification.timer:stop()
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end
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notification.box.visible = false
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arrange(scr)
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if notification.destroy_cb and reason ~= naughty.notificationClosedReason.silent then
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notification.destroy_cb(reason or naughty.notificationClosedReason.undefined)
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end
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return true
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end
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end
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--- Get notification by ID
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--
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-- @param id ID of the notification
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-- @return notification object if it was found, nil otherwise
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function naughty.getById(id)
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-- iterate the notifications to get the notfications with the correct ID
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for s = 1, capi.screen.count() do
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for p,pos in pairs(naughty.notifications[s]) do
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for i,notification in pairs(naughty.notifications[s][p]) do
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if notification.id == id then
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return notification
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end
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end
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end
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end
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end
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--- Install expiration timer for notification object.
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-- @tparam notification notification Notification object.
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-- @tparam number timeout Time in seconds to be set as expiration timeout.
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local function set_timeout(notification, timeout)
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local die = function (reason)
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naughty.destroy(notification, reason)
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end
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if timeout > 0 then
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local timer_die = timer { timeout = timeout }
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timer_die:connect_signal("timeout", function() die(naughty.notificationClosedReason.expired) end)
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if not suspended then
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timer_die:start()
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end
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notification.timer = timer_die
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end
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notification.die = die
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end
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--- Set new notification timeout.
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-- @tparam notification notification Notification object, which timer is to be reset.
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-- @tparam number new_timeout Time in seconds after which notification disappears.
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-- @return None.
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function naughty.reset_timeout(notification, new_timeout)
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if notification.timer then notification.timer:stop() end
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local timeout = timeout or notification.timeout
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set_timeout(notification, timeout)
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notification.timeout = timeout
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notification.timer:start()
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end
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--- Escape and set title and text for notification object.
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-- @tparam notification notification Notification object.
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-- @tparam string title Title of notification.
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-- @tparam string text Main text of notification.
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-- @return None.
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local function set_text(notification, title, text)
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local escape_pattern = "[<>&]"
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local escape_subs = { ['<'] = "<", ['>'] = ">", ['&'] = "&" }
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local textbox = notification.textbox
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local function setMarkup(pattern, replacements)
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textbox:set_markup(string.format('<b>%s</b>%s', title, text:gsub(pattern, replacements)))
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end
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local function setText()
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textbox:set_text(string.format('%s %s', title, text))
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end
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-- Since the title cannot contain markup, it must be escaped first so that
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-- it is not interpreted by Pango later.
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title = title:gsub(escape_pattern, escape_subs)
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-- Try to set the text while only interpreting <br>.
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-- (Setting a textbox' .text to an invalid pattern throws a lua error)
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if not pcall(setMarkup, "<br.->", "\n") then
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-- That failed, escape everything which might cause an error from pango
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if not pcall(setMarkup, escape_pattern, escape_subs) then
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-- Ok, just ignore all pango markup. If this fails, we got some invalid utf8
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if not pcall(setText) then
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textbox:set_markup("<i><Invalid markup or UTF8, cannot display message></i>")
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end
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end
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end
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end
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--- Replace title and text of an existing notification.
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-- @tparam notification notification Notification object, which contents are to be replaced.
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-- @tparam string new_title New title of notification. If not specified, old title remains unchanged.
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-- @tparam string new_text New text of notification. If not specified, old text remains unchanged.
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-- @return None.
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function naughty.replace_text(notification, new_title, new_text)
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local title = new_title
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if title then title = title .. "\n" else title = "" end
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set_text(notification, title, new_text)
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end
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--- Create a notification.
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--
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-- @tab args The argument table containing any of the arguments below.
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-- @string args.text Text of the notification.
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-- Default: ''
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-- @string args.title Title of the notification.
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-- Default: nil
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-- @int args.timeout Time in seconds after which popup expires.
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-- Set 0 for no timeout.
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-- Default: 5
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-- @int args.hover_timeout Delay in seconds after which hovered popup disappears.
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-- Default: nil
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-- @int args.screen Target screen for the notification.
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-- Default: 1
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-- @string args.position Corner of the workarea displaying the popups.
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-- Values: `"top_right"` (default), `"top_left"`, `"bottom_left"`,
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-- `"bottom_right"`, `"top_middle"`, `"bottom_middle"`.
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-- @bool args.ontop Boolean forcing popups to display on top.
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-- Default: true
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-- @int args.height Popup height.
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-- Default: nil (auto)
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-- @int args.width Popup width.
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-- Default: nil (auto)
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-- @string args.font Notification font.
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-- Default: beautiful.font or awesome.font
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-- @string args.icon Path to icon.
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-- Default: nil
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-- @int args.icon_size Desired icon size in px.
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-- Default: nil
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-- @string args.fg Foreground color.
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-- Default: `beautiful.fg_focus` or `'#ffffff'`
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-- @string args.bg Background color.
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-- Default: `beautiful.bg_focus` or `'#535d6c'`
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-- @int args.border_width Border width.
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-- Default: 1
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-- @string args.border_color Border color.
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-- Default: `beautiful.border_focus` or `'#535d6c'`
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-- @tparam func args.run Function to run on left click. Default: nil
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-- @tparam func args.destroy Function to run when notification is destroyed. Default: nil.
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-- @tparam table args.preset Table with any of the above parameters.
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-- Note: Any parameters specified directly in args
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-- will override ones defined in the preset.
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-- @tparam int args.replaces_id Replace the notification with the given ID.
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-- @tparam func args.callback Function that will be called with all arguments.
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-- The notification will only be displayed if the
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-- function returns true.
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-- Note: this function is only relevant to
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-- notifications sent via dbus.
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-- @tparam table args.actions Mapping that maps a string to a callback when this
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-- action is selected.
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-- @usage naughty.notify({ title = "Achtung!", text = "You're idling", timeout = 0 })
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-- @return The notification object
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function naughty.notify(args)
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if naughty.config.notify_callback then
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args = naughty.config.notify_callback(args)
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if not args then return end
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end
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-- gather variables together
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local preset = util.table.join(naughty.config.defaults or {},
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args.preset or naughty.config.presets.normal or {})
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local timeout = args.timeout or preset.timeout
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local icon = args.icon or preset.icon
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local icon_size = args.icon_size or preset.icon_size
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local text = args.text or preset.text
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local title = args.title or preset.title
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local screen = args.screen or preset.screen
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local ontop = args.ontop or preset.ontop
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local width = args.width or preset.width
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local height = args.height or preset.height
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local hover_timeout = args.hover_timeout or preset.hover_timeout
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local opacity = args.opacity or preset.opacity
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local margin = args.margin or preset.margin
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local border_width = args.border_width or preset.border_width
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local position = args.position or preset.position
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local actions = args.actions
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local destroy_cb = args.destroy
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-- beautiful
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local beautiful = bt.get()
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local font = args.font or preset.font or beautiful.font or capi.awesome.font
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local fg = args.fg or preset.fg or beautiful.fg_normal or '#ffffff'
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local bg = args.bg or preset.bg or beautiful.bg_normal or '#535d6c'
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local border_color = args.border_color or preset.border_color or beautiful.bg_focus or '#535d6c'
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local notification = { screen = screen, destroy_cb = destroy_cb, timeout = timeout }
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-- replace notification if needed
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if args.replaces_id then
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local obj = naughty.getById(args.replaces_id)
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if obj then
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-- destroy this and ...
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naughty.destroy(obj, naughty.notificationClosedReason.silent)
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end
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-- ... may use its ID
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if args.replaces_id <= counter then
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notification.id = args.replaces_id
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else
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counter = counter + 1
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notification.id = counter
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end
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else
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-- get a brand new ID
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counter = counter + 1
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notification.id = counter
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end
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notification.position = position
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if title then title = title .. "\n" else title = "" end
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-- hook destroy
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set_timeout(notification, timeout)
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local die = notification.die
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local run = function ()
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if args.run then
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args.run(notification)
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else
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die(naughty.notificationClosedReason.dismissedByUser)
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end
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end
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local hover_destroy = function ()
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if hover_timeout == 0 then
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die(naughty.notificationClosedReason.expired)
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else
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if notification.timer then notification.timer:stop() end
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notification.timer = timer { timeout = hover_timeout }
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notification.timer:connect_signal("timeout", function() die(naughty.notificationClosedReason.expired) end)
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notification.timer:start()
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end
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end
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-- create textbox
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local textbox = wibox.widget.textbox()
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local marginbox = wibox.layout.margin()
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marginbox:set_margins(margin)
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marginbox:set_widget(textbox)
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textbox:set_valign("middle")
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textbox:set_font(font)
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notification.textbox = textbox
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set_text(notification, title, text)
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local actionslayout = wibox.layout.fixed.vertical()
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local actions_max_width = 0
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local actions_total_height = 0
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if actions then
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for action, callback in pairs(actions) do
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local actiontextbox = wibox.widget.textbox()
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local actionmarginbox = wibox.layout.margin()
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actionmarginbox:set_margins(margin)
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actionmarginbox:set_widget(actiontextbox)
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actiontextbox:set_valign("middle")
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actiontextbox:set_font(font)
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actiontextbox:set_markup(string.format('<b>%s</b>', action))
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-- calculate the height and width
|
|
local w, h = actiontextbox:fit(-1, -1)
|
|
local height = h + 2 * margin
|
|
local width = w + 2 * margin
|
|
|
|
actionmarginbox:buttons(util.table.join(
|
|
button({ }, 1, callback),
|
|
button({ }, 3, callback)
|
|
))
|
|
actionslayout:add(actionmarginbox)
|
|
|
|
actions_total_height = actions_total_height + height
|
|
if actions_max_width < width then
|
|
actions_max_width = 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?
|
|
local success, res = pcall(function() return surface.load_uncached(icon) end)
|
|
if success then
|
|
icon = res
|
|
else
|
|
io.stderr:write(string.format("naughty: Couldn't load image '%s': %s\n", tostring(icon), res))
|
|
icon = nil
|
|
end
|
|
|
|
-- if we have an icon, use it
|
|
if icon then
|
|
iconbox = wibox.widget.imagebox()
|
|
iconmargin = wibox.layout.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 height
|
|
if not height then
|
|
local w, h = textbox:fit(-1, -1)
|
|
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
|
|
|
|
-- calculate the width
|
|
if not width then
|
|
local w, h = textbox:fit(-1, -1)
|
|
width = w + (iconbox and icon_w + 2 * margin or 0) + 2 * margin
|
|
end
|
|
|
|
if width < actions_max_width then
|
|
width = actions_max_width
|
|
end
|
|
|
|
-- crop to workarea size if too big
|
|
local workarea = capi.screen[screen].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(screen, 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[screen][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
|