468 lines
14 KiB
Lua
468 lines
14 KiB
Lua
---------------------------------------------------------------------------
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--- Screen module for awful
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--
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-- @author Julien Danjou <julien@danjou.info>
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-- @copyright 2008 Julien Danjou
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-- @release @AWESOME_VERSION@
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-- @module screen
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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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mouse = mouse,
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screen = screen,
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client = client
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}
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local util = require("awful.util")
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local object = require("gears.object")
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local grect = require("gears.geometry").rectangle
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local function get_screen(s)
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return s and capi.screen[s]
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end
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-- we use require("awful.client") inside functions to prevent circular dependencies.
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local client
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local screen = {object={}}
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local data = {}
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data.padding = {}
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screen.mouse_per_screen = {}
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--- Take an input geometry and substract/add a delta
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-- @tparam table geo A geometry (width, height, x, y) table
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-- @tparam table delta A delata table (top, bottom, x, y)
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-- @treturn table A geometry (width, height, x, y) table
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local function apply_geometry_ajustments(geo, delta)
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return {
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x = geo.x + (delta.left or 0),
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y = geo.y + (delta.top or 0),
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width = geo.width - (delta.left or 0) - (delta.right or 0),
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height = geo.height - (delta.top or 0) - (delta.bottom or 0),
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}
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end
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--- Get the square distance between a `screen` and a point
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-- @deprecated awful.screen.getdistance_sq
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-- @param s Screen
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-- @param x X coordinate of point
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-- @param y Y coordinate of point
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-- @return The squared distance of the screen to the provided point
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-- @see screen.get_square_distance
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function screen.getdistance_sq(s, x, y)
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util.deprecate("Use s:get_square_distance(x, y) instead of awful.screen.getdistance_sq")
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return screen.object.get_square_distance(s, x, y)
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end
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--- Get the square distance between a `screen` and a point
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-- @function screen.get_square_distance
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-- @tparam number x X coordinate of point
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-- @tparam number y Y coordinate of point
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-- @treturn number The squared distance of the screen to the provided point
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function screen.object.get_square_distance(self, x, y)
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return grect.get_square_distance(get_screen(self).geometry, x, y)
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end
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---
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-- Return screen number corresponding to the given (pixel) coordinates.
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-- The number returned can be used as an index into the global
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-- `screen` table/object.
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-- @function awful.screen.getbycoord
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-- @tparam number x The x coordinate
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-- @tparam number y The y coordinate
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-- @treturn ?number The screen index
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function screen.getbycoord(x, y)
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local s, sgeos = capi.screen.primary, {}
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for scr in capi.screen do
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sgeos[scr] = scr.geometry
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end
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s = grect.get_closest_by_coord(sgeos, x, y) or s
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return s and s.index
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end
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--- Give the focus to a screen, and move pointer to last known position on this
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-- screen, or keep position relative to the current focused screen
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-- @function awful.screen.focus
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-- @param _screen Screen number (defaults / falls back to mouse.screen).
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function screen.focus(_screen)
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client = client or require("awful.client")
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if type(_screen) == "number" and _screen > capi.screen.count() then _screen = screen.focused() end
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_screen = get_screen(_screen)
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-- screen and pos for current screen
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local s = get_screen(capi.mouse.screen)
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local pos
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if not screen.mouse_per_screen[_screen] then
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-- This is the first time we enter this screen,
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-- keep relative mouse position on the new screen
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pos = capi.mouse.coords()
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local relx = (pos.x - s.geometry.x) / s.geometry.width
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local rely = (pos.y - s.geometry.y) / s.geometry.height
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pos.x = _screen.geometry.x + relx * _screen.geometry.width
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pos.y = _screen.geometry.y + rely * _screen.geometry.height
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else
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-- restore mouse position
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pos = screen.mouse_per_screen[_screen]
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end
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-- save pointer position of current screen
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screen.mouse_per_screen[s] = capi.mouse.coords()
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-- move cursor without triggering signals mouse::enter and mouse::leave
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capi.mouse.coords(pos, true)
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local c = client.focus.history.get(_screen, 0)
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if c then
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c:emit_signal("request::activate", "screen.focus", {raise=false})
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end
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end
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--- Give the focus to a screen, and move pointer to last known position on this
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-- screen, or keep position relative to the current focused screen
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-- @function awful.screen.focus_bydirection
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-- @param dir The direction, can be either "up", "down", "left" or "right".
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-- @param _screen Screen.
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function screen.focus_bydirection(dir, _screen)
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local sel = get_screen(_screen or screen.focused())
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if sel then
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local geomtbl = {}
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for s in capi.screen do
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geomtbl[s] = capi.screen[s].geometry
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end
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local target = grect.get_in_direction(dir, geomtbl, sel.geometry)
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if target then
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return screen.focus(target)
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end
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end
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end
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--- Give the focus to a screen, and move pointer to last known position on this
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-- screen, or keep position relative to the current focused screen
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-- @function awful.screen.focus_relative
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-- @param i Value to add to the current focused screen index. 1 will focus next
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-- screen, -1 would focus the previous one.
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function screen.focus_relative(i)
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return screen.focus(util.cycle(capi.screen.count(), screen.focused().index + i))
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end
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--- Get or set the screen padding.
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-- @deprecated awful.screen.padding
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-- @param _screen The screen object to change the padding on
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-- @param[opt=nil] padding The padding, a table with 'top', 'left', 'right' and/or
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-- 'bottom' or a number value to apply set the same padding on all sides. Can be
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-- nil if you only want to retrieve padding
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-- @treturn table A table with left, right, top and bottom number values.
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-- @see padding
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function screen.padding(_screen, padding)
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util.deprecate("Use _screen.padding = value instead of awful.screen.padding")
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if padding then
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screen.object.set_padding(_screen, padding)
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end
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return screen.object.get_padding(_screen)
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end
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--- The screen padding.
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-- Add a "buffer" section on each side of the screen where the tiled client
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-- wont be.
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--
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-- **Signal:**
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--
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-- * *property::padding*
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--
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-- @property padding
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-- @param table
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-- @tfield integer table.x The horizontal position
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-- @tfield integer table.y The vertical position
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-- @tfield integer table.width The width
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-- @tfield integer table.height The height
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function screen.object.get_padding(self)
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local p = data.padding[self] or {}
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-- Create a copy to avoid accidental mutation and nil values
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return {
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left = p.left or 0,
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right = p.right or 0,
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top = p.top or 0,
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bottom = p.bottom or 0,
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}
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end
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function screen.object.set_padding(self, padding)
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if type(padding) == "number" then
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padding = {
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left = padding,
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right = padding,
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top = padding,
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bottom = padding,
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}
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end
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self = get_screen(self)
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if padding then
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data.padding[self] = padding
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self:emit_signal("padding")
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end
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end
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--- The defaults arguments for `awful.screen.focused`
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-- @tfield[opt=nil] table awful.screen.default_focused_args
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--- Get the focused screen.
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--
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-- It is possible to set `awful.screen.default_focused_args` to override the
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-- default settings.
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--
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-- @function awful.screen.focused
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-- @tparam[opt] table args
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-- @tparam[opt=false] boolean args.client Use the client screen instead of the
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-- mouse screen.
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-- @tparam[opt=true] boolean args.mouse Use the mouse screen
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-- @treturn ?screen The focused screen object, or `nil` in case no screen is
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-- present currently.
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function screen.focused(args)
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args = args or screen.default_focused_args or {}
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return get_screen(
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(args.client and args.client.screen) or
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(capi.client.focus and capi.client.focus.screen) or
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capi.mouse.screen
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)
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end
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--- Get a placement bounding geometry.
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-- This method compute different variants of the "usable" screen geometry.
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--
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-- Valid arguments are:
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--
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-- * **honor_padding**: Honor the screen padding.
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-- * **honor_workarea**: Honor the screen workarea
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-- * **margins**: Apply some margins on the output. This can wither be a number
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-- or a table with *left*, *right*, *top* and *bottom* keys.
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-- * **tag**: Use the tag screen instead of `s`
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-- * **parent**: A parent drawable to use a base geometry
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-- * **bounding_rect**: A bounding rectangle. This parameter is incompatible with
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-- `honor_workarea`.
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--
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-- @function screen.get_bounding_geometry
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-- @tparam[opt={}] table args The arguments
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-- @treturn table A table with *x*, *y*, *width* and *height*.
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-- @usage local geo = screen:get_bounding_geometry {
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-- honor_padding = true,
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-- honor_workarea = true,
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-- margins = {
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-- left = 20,
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-- },
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-- }
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function screen.object.get_bounding_geometry(self, args)
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args = args or {}
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-- If the tag has a geometry, assume it is right
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if args.tag then
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self = args.tag.screen
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end
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self = get_screen(self or capi.mouse.screen)
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local geo = args.bounding_rect or (args.parent and args.parent:geometry()) or
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self[args.honor_workarea and "workarea" or "geometry"]
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if (not args.parent) and (not args.bounding_rect) and args.honor_padding then
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local padding = self.padding
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geo = apply_geometry_ajustments(geo, padding)
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end
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if args.margins then
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geo = apply_geometry_ajustments(geo,
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type(args.margins) == "table" and args.margins or {
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left = args.margins, right = args.margins,
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top = args.margins, bottom = args.margins,
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}
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)
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end
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return geo
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end
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--- Get the list of the screen visible clients.
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--
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-- Minimized and unmanaged clients are not included in this list as they are
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-- technically not on the screen.
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--
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-- The clients on tags currently not visible are not part of this list.
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--
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-- @property clients
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-- @param table The clients list, ordered top to bottom
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-- @see all_clients
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-- @see hidden_clients
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-- @see client.get
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function screen.object.get_clients(s)
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local cls = capi.client.get(s, true)
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local vcls = {}
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for _, c in pairs(cls) do
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if c:isvisible() then
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table.insert(vcls, c)
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end
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end
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return vcls
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end
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--- Get the list of the clients assigned to the screen but not currently
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-- visible.
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--
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-- This include minimized clients and clients on hidden tags.
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--
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-- @property hidden_clients
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-- @param table The clients list, ordered top to bottom
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-- @see clients
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-- @see all_clients
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-- @see client.get
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function screen.object.get_hidden_clients(s)
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local cls = capi.client.get(s, true)
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local vcls = {}
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for _, c in pairs(cls) do
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if not c:isvisible() then
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table.insert(vcls, c)
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end
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end
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return vcls
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end
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--- Get all clients assigned to the screen.
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--
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-- @property all_clients
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-- @param table The clients list, ordered top to bottom
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-- @see clients
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-- @see hidden_clients
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-- @see client.get
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function screen.object.get_all_clients(s)
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return capi.client.get(s, true)
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end
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--- Get the list of the screen tiled clients.
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--
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-- Same as s.clients, but excluding:
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--
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-- * fullscreen clients
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-- * maximized clients
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-- * floating clients
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--
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-- @property tiled_clients
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-- @param table The clients list, ordered top to bottom
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function screen.object.get_tiled_clients(s)
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local clients = s.clients
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local tclients = {}
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-- Remove floating clients
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for _, c in pairs(clients) do
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if not c.floating
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and not c.fullscreen
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and not c.maximized_vertical
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and not c.maximized_horizontal then
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table.insert(tclients, c)
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end
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end
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return tclients
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end
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--- Call a function for each existing and created-in-the-future screen.
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-- @function awful.screen.connect_for_each_screen
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-- @tparam function func The function to call.
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-- @tparam screen func.screen The screen
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function screen.connect_for_each_screen(func)
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for s in capi.screen do
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func(s)
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end
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capi.screen.connect_signal("added", func)
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end
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--- Undo the effect of connect_for_each_screen.
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-- @function awful.screen.disconnect_for_each_screen
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-- @tparam function func The function that should no longer be called.
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function screen.disconnect_for_each_screen(func)
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capi.screen.disconnect_signal("added", func)
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end
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--- A list of all tags on the screen.
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--
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-- This property is read only, use `tag.screen`, `awful.tag.add`, `awful.tag.new`
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-- or `t:delete()` to alter this list.
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--
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-- @property tags
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-- @param table
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-- @treturn table A table with all available tags
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function screen.object.get_tags(s, unordered)
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local tags = {}
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for _, t in ipairs(root.tags()) do
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if get_screen(t.screen) == s then
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table.insert(tags, t)
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end
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end
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-- Avoid infinite loop, + save some time
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if not unordered then
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table.sort(tags, function(a, b)
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return (a.index or 9999) < (b.index or 9999)
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end)
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end
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return tags
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end
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--- A list of all selected tags on the screen.
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-- @property selected_tags
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-- @param table
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-- @treturn table A table with all selected tags.
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-- @see tag.selected
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-- @see client.to_selected_tags
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function screen.object.get_selected_tags(s)
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local tags = screen.object.get_tags(s, true)
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local vtags = {}
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for _, t in pairs(tags) do
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if t.selected then
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vtags[#vtags + 1] = t
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end
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end
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return vtags
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end
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--- The first selected tag.
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-- @property selected_tag
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-- @param table
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-- @treturn ?tag The first selected tag or nil
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-- @see tag.selected
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-- @see selected_tags
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function screen.object.get_selected_tag(s)
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return screen.object.get_selected_tags(s)[1]
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end
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--- When the tag history changed.
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-- @signal tag::history::update
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-- Extend the luaobject
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object.properties(capi.screen, {
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getter_class = screen.object,
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setter_class = screen.object,
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auto_emit = true,
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})
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return screen
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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