346 lines
12 KiB
Lua
346 lines
12 KiB
Lua
---------------------------------------------------------------------------
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-- @author Julien Danjou <julien@danjou.info>
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-- @copyright 2009 Julien Danjou
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-- @release v3.4.9
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---------------------------------------------------------------------------
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-- Grab environment we need
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local capi =
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{
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awesome = awesome,
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screen = screen,
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wibox = wibox,
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client = client
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}
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local setmetatable = setmetatable
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local tostring = tostring
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local ipairs = ipairs
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local table = table
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local type = type
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local image = image
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local error = error
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--- Wibox module for awful.
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-- This module allows you to easily create wibox and attach them to the edge of
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-- a screen.
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module("awful.wibox")
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-- Array of table with wiboxes inside.
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-- It's an array so it is ordered.
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local wiboxes = {}
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--- Get a wibox position if it has been set, or return top.
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-- @param wibox The wibox
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-- @return The wibox position.
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function get_position(wibox)
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for _, wprop in ipairs(wiboxes) do
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if wprop.wibox == wibox then
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return wprop.position
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end
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end
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return "top"
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end
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--- Put a wibox on a screen at this position.
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-- @param wibox The wibox to attach.
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-- @param position The position: top, bottom left or right.
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-- @param screen If the wibox it not attached to a screen, specified on which
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-- screen the position should be set.
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function set_position(wibox, position, screen)
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local screen = screen or wibox.screen or 1
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local area = capi.screen[screen].geometry
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-- The "length" of a wibox is always chosen to be the optimal size
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-- (non-floating).
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-- The "width" of a wibox is kept if it exists.
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if position == "right" then
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wibox.x = area.x + area.width - (wibox.width + 2 * wibox.border_width)
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elseif position == "left" then
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wibox.x = area.x
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elseif position == "bottom" then
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wibox.y = (area.y + area.height) - (wibox.height + 2 * wibox.border_width)
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elseif position == "top" then
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wibox.y = area.y
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end
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for _, wprop in ipairs(wiboxes) do
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if wprop.wibox == wibox then
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wprop.position = position
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break
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end
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end
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end
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-- Reset all wiboxes positions.
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local function update_all_wiboxes_position()
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for _, wprop in ipairs(wiboxes) do
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set_position(wprop.wibox, wprop.position)
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end
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end
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local function call_wibox_position_hook_on_prop_update(w)
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update_all_wiboxes_position()
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end
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local function wibox_update_strut(wibox)
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for _, wprop in ipairs(wiboxes) do
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if wprop.wibox == wibox then
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if not wibox.visible then
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wibox:struts { left = 0, right = 0, bottom = 0, top = 0 }
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elseif wprop.position == "top" then
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wibox:struts { left = 0, right = 0, bottom = 0, top = wibox.height + 2 * wibox.border_width }
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elseif wprop.position == "bottom" then
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wibox:struts { left = 0, right = 0, bottom = wibox.height + 2 * wibox.border_width, top = 0 }
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elseif wprop.position == "left" then
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wibox:struts { left = wibox.width + 2 * wibox.border_width, right = 0, bottom = 0, top = 0 }
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elseif wprop.position == "right" then
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wibox:struts { left = 0, right = wibox.width + 2 * wibox.border_width, bottom = 0, top = 0 }
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end
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break
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end
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end
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end
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--- Attach a wibox to a screen.
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-- If a wibox is attached, it will be automatically be moved when other wiboxes
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-- will be attached.
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-- @param wibox The wibox to attach.
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-- @param position The position of the wibox: top, bottom, left or right.
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function attach(wibox, position)
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-- Store wibox as attached in a weak-valued table
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local wibox_prop_table
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-- Start from end since we sometimes remove items
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for i = #wiboxes, 1, -1 do
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-- Since wiboxes are stored as weak value, they can disappear.
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-- If they did, remove their entries
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if wiboxes[i].wibox == nil then
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table.remove(wiboxes, i)
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elseif wiboxes[i].wibox == wibox then
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wibox_prop_table = wiboxes[i]
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-- We could break here, but well, let's check if there is no other
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-- table with their wiboxes been garbage collected.
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end
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end
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if not wibox_prop_table then
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table.insert(wiboxes, setmetatable({ wibox = wibox, position = position }, { __mode = 'v' }))
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else
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wibox_prop_table.position = position
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end
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wibox:add_signal("property::width", wibox_update_strut)
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wibox:add_signal("property::height", wibox_update_strut)
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wibox:add_signal("property::visible", wibox_update_strut)
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wibox:add_signal("property::screen", call_wibox_position_hook_on_prop_update)
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wibox:add_signal("property::width", call_wibox_position_hook_on_prop_update)
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wibox:add_signal("property::height", call_wibox_position_hook_on_prop_update)
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wibox:add_signal("property::visible", call_wibox_position_hook_on_prop_update)
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wibox:add_signal("property::border_width", call_wibox_position_hook_on_prop_update)
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end
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--- Align a wibox.
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-- @param wibox The wibox.
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-- @param align The alignment: left, right or center.
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-- @param screen If the wibox is not attached to any screen, you can specify the
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-- screen where to align. Otherwise 1 is assumed.
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function align(wibox, align, screen)
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local position = get_position(wibox)
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local screen = screen or wibox.screen or 1
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local area = capi.screen[screen].workarea
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if position == "right" then
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if align == "right" then
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wibox.y = area.y
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elseif align == "left" then
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wibox.y = area.y + area.height - (wibox.height + 2 * wibox.border_width)
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elseif align == "center" then
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wibox.y = area.y + (area.height - wibox.height) / 2
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end
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elseif position == "left" then
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if align == "right" then
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wibox.y = (area.y + area.height) - (wibox.height + 2 * wibox.border_width)
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elseif align == "left" then
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wibox.y = area.y
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elseif align == "center" then
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wibox.y = area.y + (area.height - wibox.height) / 2
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end
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elseif position == "bottom" then
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if align == "right" then
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wibox.x = area.x + area.width - (wibox.width + 2 * wibox.border_width)
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elseif align == "left" then
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wibox.x = area.x
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elseif align == "center" then
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wibox.x = area.x + (area.width - wibox.width) / 2
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end
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elseif position == "top" then
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if align == "right" then
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wibox.x = area.x + area.width - (wibox.width + 2 * wibox.border_width)
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elseif align == "left" then
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wibox.x = area.x
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elseif align == "center" then
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wibox.x = area.x + (area.width - wibox.width) / 2
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end
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end
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-- Update struts regardless of changes
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wibox_update_strut(wibox)
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end
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--- Stretch a wibox so it takes all screen width or height.
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-- @param wibox The wibox.
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-- @param screen The screen to stretch on, or the wibox screen.
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function stretch(wibox, screen)
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local screen = screen or wibox.screen
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if screen then
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local position = get_position(wibox)
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local area = capi.screen[screen].workarea
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if position == "right" or position == "left" then
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wibox.height = area.height - (2 * wibox.border_width)
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wibox.y = area.y
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else
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wibox.width = area.width - (2 * wibox.border_width)
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wibox.x = area.x
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end
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end
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end
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--- Create a new wibox and attach it to a screen edge.
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-- @see capi.wibox
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-- @param args A table with standard arguments to wibox() creator.
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-- You can add also position key with value top, bottom, left or right.
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-- You can also use width or height in % and set align to center, right or left.
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-- You can also set the screen key with a screen number to attach the wibox.
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-- If not specified, 1 is assumed.
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-- @return The wibox created.
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function new(arg)
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local arg = arg or {}
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local position = arg.position or "top"
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local has_to_stretch = true
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-- Empty position and align in arg so we are passing deprecation warning
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arg.position = nil
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if position ~= "top" and position ~="bottom"
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and position ~= "left" and position ~= "right" then
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error("Invalid position in awful.wibox(), you may only use"
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.. " 'top', 'bottom', 'left' and 'right'")
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end
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-- Set default size
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if position == "left" or position == "right" then
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arg.width = arg.width or capi.awesome.font_height * 1.5
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if arg.height then
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has_to_stretch = false
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if arg.screen then
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local hp = tostring(arg.height):match("(%d+)%%")
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if hp then
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arg.height = capi.screen[arg.screen].geometry.height * hp / 100
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end
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end
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end
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else
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arg.height = arg.height or capi.awesome.font_height * 1.5
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if arg.width then
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has_to_stretch = false
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if arg.screen then
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local wp = tostring(arg.width):match("(%d+)%%")
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if wp then
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arg.width = capi.screen[arg.screen].geometry.width * wp / 100
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end
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end
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end
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end
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local w = capi.wibox(arg)
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if position == "left" then
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w.orientation = "north"
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elseif position == "right" then
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w.orientation = "south"
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end
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w.screen = arg.screen or 1
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attach(w, position)
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if has_to_stretch then
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stretch(w)
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else
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align(w, arg.align)
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end
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set_position(w, position)
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return w
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end
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local function do_rounded_corners(width, height, corner)
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local img = image.argb32(width, height, nil)
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-- The image starts completely black which is fully opaque for our use
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local function transp_rect(x, y)
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img:draw_rectangle(x, y, corner, corner, true, "#ffffff")
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end
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local function opaque_circle(x, y)
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-- x, y are the center of the circle
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img:draw_circle(x, y, corner, corner, true, "#000000")
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end
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-- Upper left corner
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-- First make a 'corner times corner' rectangle transparent
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transp_rect(0, 0)
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-- Then add the rounded corner
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opaque_circle(corner, corner)
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-- Upper right corner
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transp_rect(width - corner, 0)
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opaque_circle(width - corner - 1, corner)
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-- Bottom left corner
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transp_rect(0, height - corner)
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opaque_circle(corner, height - corner - 1)
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-- Bottom right corner
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transp_rect(width - corner, height - corner)
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opaque_circle(width - corner - 1, height - corner - 1)
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return img
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end
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--- Add rounded corners to a wibox
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-- @param wibox The wibox.
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-- @param corner_size The size in pixel of the rounded corners.
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function rounded_corners(wibox, corner_size)
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local border = wibox.border_width
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-- Corners can't be larger than half the wibox' space
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if wibox.width / 2 < corner_size then
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corner_size = wibox.width / 2
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end
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if wibox.height / 2 < corner_size then
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corner_size = wibox.height / 2
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end
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wibox.shape_clip = do_rounded_corners(wibox.width, wibox.height, corner_size)
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wibox.shape_bounding = do_rounded_corners(wibox.width + border * 2, wibox.height + border * 2, corner_size + border)
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end
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local function update_wiboxes_on_struts(c)
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local struts = c:struts()
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if struts.left ~= 0 or struts.right ~= 0
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or struts.top ~= 0 or struts.bottom ~= 0 then
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update_all_wiboxes_position()
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end
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end
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-- Hook registered to reset all wiboxes position.
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capi.client.add_signal("manage", function(c)
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update_wiboxes_on_struts(c)
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c:add_signal("property::struts", update_wiboxes_on_struts)
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end)
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capi.client.add_signal("unmanage", update_wiboxes_on_struts)
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setmetatable(_M, { __call = function(_, ...) return new(...) end })
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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