272 lines
8.3 KiB
Lua
272 lines
8.3 KiB
Lua
-------------------------------------------------------------------------
|
||
--- Tooltip module for awesome objects.
|
||
--
|
||
-- A tooltip is a small hint displayed when the mouse cursor
|
||
-- hovers a specific item.
|
||
-- In awesome, a tooltip can be linked with almost any
|
||
-- object having a `:connect_signal()` method and receiving
|
||
-- `mouse::enter` and `mouse::leave` signals.
|
||
--
|
||
-- How to create a tooltip?
|
||
-- ---
|
||
--
|
||
-- myclock = awful.widget.textclock({}, "%T", 1)
|
||
-- myclock_t = awful.tooltip({
|
||
-- objects = { myclock },
|
||
-- timer_function = function()
|
||
-- return os.date("Today is %A %B %d %Y\nThe time is %T")
|
||
-- end,
|
||
-- })
|
||
--
|
||
-- How to add the same tooltip to several objects?
|
||
-- ---
|
||
--
|
||
-- myclock_t:add_to_object(obj1)
|
||
-- myclock_t:add_to_object(obj2)
|
||
--
|
||
-- Now the same tooltip is attached to `myclock`, `obj1`, `obj2`.
|
||
--
|
||
-- How to remove tooltip from many objects?
|
||
-- ---
|
||
--
|
||
-- myclock_t:remove_from_object(obj1)
|
||
-- myclock_t:remove_from_object(obj2)
|
||
--
|
||
-- Now the same tooltip is only attached to `myclock`.
|
||
--
|
||
-- @author Sébastien Gross <seb•ɱɩɲʋʃ•awesome•ɑƬ•chezwam•ɖɵʈ•org>
|
||
-- @copyright 2009 Sébastien Gross
|
||
-- @release @AWESOME_VERSION@
|
||
-- @module awful.tooltip
|
||
-------------------------------------------------------------------------
|
||
|
||
local mouse = mouse
|
||
local screen = screen
|
||
local timer = require("gears.timer")
|
||
local wibox = require("wibox")
|
||
local a_placement = require("awful.placement")
|
||
local beautiful = require("beautiful")
|
||
local textbox = require("wibox.widget.textbox")
|
||
local background = require("wibox.widget.background")
|
||
local dpi = require("beautiful").xresources.apply_dpi
|
||
local setmetatable = setmetatable
|
||
local ipairs = ipairs
|
||
|
||
--- Tooltip object definition.
|
||
-- @table awful.tooltip
|
||
-- @field wibox The wibox displaying the tooltip.
|
||
-- @field visible True if tooltip is visible.
|
||
local tooltip = { mt = {} }
|
||
|
||
--- Tooltip private data.
|
||
-- @local
|
||
-- @table awful.tooltip.data
|
||
-- @field fg tooltip foreground color.
|
||
-- @field font Tooltip font.
|
||
-- @field hide The hide() function.
|
||
-- @field show The show() function.
|
||
-- @field timer The text update timer.
|
||
-- @field timer_function The text update timer function.
|
||
local data = setmetatable({}, { __mode = 'k' })
|
||
|
||
-- Place the tooltip on the screen.
|
||
-- @param self A tooltip object.
|
||
local function place(self)
|
||
a_placement.under_mouse(self.wibox)
|
||
a_placement.no_offscreen(self.wibox)
|
||
end
|
||
|
||
-- Place the tooltip under the mouse.
|
||
--
|
||
-- @param self A tooltip object.
|
||
local function set_geometry(self)
|
||
local my_geo = self.wibox:geometry()
|
||
-- calculate width / height
|
||
local n_w, n_h = self.textbox:fit(-1, -1)
|
||
n_w = n_w + self.marginbox.left + self.marginbox.right
|
||
n_h = n_h + self.marginbox.top + self.marginbox.bottom
|
||
if my_geo.width ~= n_w or my_geo.height ~= n_h then
|
||
self.wibox:geometry({ width = n_w, height = n_h })
|
||
end
|
||
end
|
||
|
||
-- Show a tooltip.
|
||
--
|
||
-- @param self The tooltip to show.
|
||
local function show(self)
|
||
-- do nothing if the tooltip is already shown
|
||
if self.visible then return end
|
||
if data[self].timer then
|
||
if not data[self].timer.started then
|
||
data[self].timer_function()
|
||
data[self].timer:start()
|
||
end
|
||
end
|
||
set_geometry(self)
|
||
place(self)
|
||
self.wibox.visible = true
|
||
self.visible = true
|
||
end
|
||
|
||
-- Hide a tooltip.
|
||
--
|
||
-- @param self The tooltip to hide.
|
||
local function hide(self)
|
||
-- do nothing if the tooltip is already hidden
|
||
if not self.visible then return end
|
||
if data[self].timer then
|
||
if data[self].timer.started then
|
||
data[self].timer:stop()
|
||
end
|
||
end
|
||
self.visible = false
|
||
self.wibox.visible = false
|
||
end
|
||
|
||
--- Change displayed text.
|
||
--
|
||
-- @param self The tooltip object.
|
||
-- @param text New tooltip text.
|
||
tooltip.set_text = function(self, text)
|
||
self.textbox:set_text(text)
|
||
set_geometry(self)
|
||
end
|
||
|
||
--- Change displayed text.
|
||
--
|
||
-- @param self The tooltip object.
|
||
-- @param text New tooltip text, including pango markup.
|
||
tooltip.set_markup = function(self, text)
|
||
self.textbox:set_markup(text)
|
||
set_geometry(self)
|
||
end
|
||
|
||
--- Change the tooltip's update interval.
|
||
--
|
||
-- @param self A tooltip object.
|
||
-- @param timeout The timeout value.
|
||
-- @function set_timeout
|
||
tooltip.set_timeout = function(self, timeout)
|
||
if data[self].timer then
|
||
data[self].timer.timeout = timeout
|
||
end
|
||
end
|
||
|
||
--- Add tooltip to an object.
|
||
--
|
||
-- @param self The tooltip.
|
||
-- @param object An object.
|
||
tooltip.add_to_object = function(self, object)
|
||
object:connect_signal("mouse::enter", data[self].show)
|
||
object:connect_signal("mouse::leave", data[self].hide)
|
||
end
|
||
|
||
--- Remove tooltip from an object.
|
||
--
|
||
-- @param self The tooltip.
|
||
-- @param object An object.
|
||
-- @function remove_from_object
|
||
tooltip.remove_from_object = function(self, object)
|
||
object:disconnect_signal("mouse::enter", data[self].show)
|
||
object:disconnect_signal("mouse::leave", data[self].hide)
|
||
end
|
||
|
||
|
||
--- Create a new tooltip and link it to a widget.
|
||
-- @tparam table args Arguments for tooltip creation.
|
||
-- @tparam number args.timeout The timeout value for update_func.
|
||
-- @tparam function args.timer_function A function to dynamically change the
|
||
-- tooltip text.
|
||
-- @tparam table args.objects A list of objects linked to the tooltip.
|
||
-- @tparam number args.delay_show Delay showing the tooltip by this many
|
||
-- seconds.
|
||
-- @tparam integer args.margin_leftright The left/right margin for the text.
|
||
-- @tparam integer args.margin_topbottom The top/bottom margin for the text.
|
||
-- @return The created tooltip.
|
||
-- @see add_to_object
|
||
-- @see set_timeout
|
||
-- @see set_text
|
||
-- @see set_markup
|
||
tooltip.new = function(args)
|
||
local self = {
|
||
wibox = wibox({ }),
|
||
visible = false,
|
||
}
|
||
|
||
-- private data
|
||
local delay_timeout
|
||
if args.delay_show then
|
||
delay_timeout = timer { timeout = args.delay_show }
|
||
delay_timeout:connect_signal("timeout", function () show(self) end)
|
||
end
|
||
data[self] = {
|
||
show = function()
|
||
if delay_timeout then delay_timeout:start()
|
||
else show(self) end
|
||
end,
|
||
hide = function()
|
||
if delay_timeout then delay_timeout:stop() end
|
||
hide(self)
|
||
end,
|
||
}
|
||
|
||
-- export functions
|
||
self.set_text = tooltip.set_text
|
||
self.set_markup = tooltip.set_markup
|
||
self.set_timeout = tooltip.set_timeout
|
||
self.add_to_object = tooltip.add_to_object
|
||
self.remove_from_object = tooltip.remove_from_object
|
||
|
||
-- setup the timer action only if needed
|
||
if args.timer_function then
|
||
data[self].timer = timer { timeout = args.timeout and args.timeout or 1 }
|
||
data[self].timer_function = function()
|
||
self:set_markup(args.timer_function())
|
||
end
|
||
data[self].timer:connect_signal("timeout", data[self].timer_function)
|
||
end
|
||
|
||
-- Set default properties
|
||
self.wibox.border_width = beautiful.tooltip_border_width or beautiful.border_width or 1
|
||
self.wibox.border_color = beautiful.tooltip_border_color or beautiful.border_normal or "#ffcb60"
|
||
self.wibox.opacity = beautiful.tooltip_opacity or 1
|
||
self.wibox:set_bg(beautiful.tooltip_bg_color or beautiful.bg_focus or "#ffcb60")
|
||
local fg = beautiful.tooltip_fg_color or beautiful.fg_focus or "#000000"
|
||
local font = beautiful.tooltip_font or beautiful.font or "terminus 6"
|
||
|
||
-- set tooltip properties
|
||
self.wibox.visible = false
|
||
-- Who wants a non ontop tooltip ?
|
||
self.wibox.ontop = true
|
||
self.textbox = textbox()
|
||
self.textbox:set_font(font)
|
||
self.background = background(self.textbox)
|
||
self.background:set_fg(fg)
|
||
|
||
-- Add margin.
|
||
local m_lr = args.margin_leftright or dpi(5)
|
||
local m_tb = args.margin_topbottom or dpi(3)
|
||
self.marginbox = wibox.layout.margin(self.background, m_lr, m_lr, m_tb, m_tb)
|
||
self.wibox:set_widget(self.marginbox)
|
||
|
||
-- add some signals on both the tooltip and widget
|
||
self.wibox:connect_signal("mouse::enter", data[self].hide)
|
||
|
||
-- Add tooltip to objects
|
||
if args.objects then
|
||
for _, object in ipairs(args.objects) do
|
||
self:add_to_object(object)
|
||
end
|
||
end
|
||
|
||
return self
|
||
end
|
||
|
||
function tooltip.mt:__call(...)
|
||
return tooltip.new(...)
|
||
end
|
||
|
||
return setmetatable(tooltip, tooltip.mt)
|
||
|
||
-- vim: ft=lua:et:sw=4:ts=4:sts=4:tw=78
|