revelation

revelation/LICENSE

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+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
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+General Public License, and the "GNU GPL" refers to version 3 of the GNU
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+Library.

revelation/README.md

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+# revelation.lua
+
+Provides Mac OSX like 'Expose' view of all clients. 
+
+This is a fork from [revelation](https://github.com/bioe007/awesome-revelation)
+It is modified from the original revelation.lua for incorporating with awesome 3.5 or later. 
+It also have some features.  
+
+
+**Now master branch works for both master and stable awesome WM**
+
+## Changes since 2015-09-26
+When all clients are exposing, you can zoom (__Modkey + Shift + hintbox charater__ or __right button__ of the mouse)
+or kill a client (__middle button__ of the mouse) and the position of hintboxes will be updated accordingly.
+
+## Changes since 2014-02-19
+* Now the revlation is able to handle the special clients(float, fullscreen or maximized etc.)
+* When you select an minimized client, the revelation will un-minimized it and then focuse on it.
+* Added an option to change character ordering
+
+## Changes after 2013-12-30
+* Now it is possible, in revelation.init({...}), to change the default settings of 
+  revelation module.
+
+* Function `revelation(...)` now accept the parameter as a table `{rule={...}, is_excluded=...,
+curr_tag_only=...}`. 
+
+1. To add specify rules `revelation({rule={...},...})`.
+2. To exclude the clients matched by the rules instead of including `revelation({rule={...}, 
+is_excluded=true})`.
+3. `{...,curr_tag_only=true}` make the revelation only collect the client from current
+  tags.
+
+
+## Changes from the original revelation
+* Support awesome 3.5 or later 
+
+* Add the support of multiple screens. Now multiple 'Expose' views will be shown 
+  on the multiple screens at the same time.
+
+* The way of selecting and focusing the client was changed. The old way that is
+  navigating clients by pressing the keys "j, h, k, l"  and then selecting the
+  client by pressing key "Enter" was deprecated. Now each client in the 'Expose'
+  views come with a letter surrounding by a hint box, you can select the client
+  by pressing the corresponding letter in the hint box.  The idea and codes of this method
+  was copied from the module [hint](https://github.com/zackpete/hints). 
+  
+* Add zoom mode. Add the function of zooming the client by pressing the right
+  button of the mouse.
+
+* The unwanted clients can be excluded by the parameter`{rule={...}....}`. 
+
+## Screenshot
+
+![screenshot](./screenshot.png)
+
+
+## Usage
+
+### Installation
+ (From user's awesome configuration directory, usually ~/.config/awesome)
+
+ 1. Clone the repository:
+
+        git clone https://github.com/guotsuan/awesome-revelation revelation
+
+ 2. Include it at the top of your rc.lua file:
+    `local revelation=require("revelation")`
+
+ 3. **Important: Add `revelation.init()` after `beautiful.init()`**
+
+ 3. Define a global keybinding (e. g. `ModKey + e`) for revelation in your rc.lua:
+
+        globalkeys = awful.util.table.join(
+        awful.key({ modkey,           }, "Left",   awful.tag.viewprev       ), 
+        awful.key({ modkey,           }, "Right",  awful.tag.viewnext       ),
+        awful.key({ modkey,           }, "Escape", awful.tag.history.restore),
+        awful.key({ modkey,           }, "e",      revelation),
+        awful.key({ modkey,           }, "j",
+        function ()
+            awful.client.focus.byidx( 1)
+            if client.focus then client.focus:raise() end
+        end),
+
+    **NOTE:** Always double check the key binding syntax against the version of
+    Awesome which you are using.
+
+ 4. Restart Awesome (usually __Modkey + Control + r__) and try the keybinding __Modkey + e__.
+
+ It should bring up all clients from the current tags on all screens and set the layout to fair.
+ You can focus clients with the __cursor__ keys, and then press the __left__ button to select,
+ or you can directly focus a client by pressing the corresponding key shown in the hint box.
+ Press the right mouse button to zoom the client or __Escape__ to abort.
+
+### Configuration
+ Revelation's configuration is done through the init() function
+ 
+ There are three basic settings, shown with default values:
+
+    -- The name of the tag created for the 'exposed' view
+    revelation.tag_name = 'Revelation'
+
+    -- A table of matcher functions (used in client filtering)
+    revelation.exact = awful.rules.match
+    revelation.any   = awful.rules.match_any
+
+    -- Character order for selecting clients
+    revelation.charorder = "jkluiopyhnmfdsatgvcewqzx1234567890",
+
+ The rule matching functions must conform to `awful.rules.match` prototypes.
+
+ For client matching rules, we follow the same syntax as awful.rules expects.
+ If `rule.any == true`, then we call the `config.match.any` function.
+
+to change the settings, use:
+
+     revelation.init({tag_name = ..., match = {...}, charorder = ...})
+
+
+### Examples
+ All clients:
+
+     awful.key({modkey}, "e", revelation)
+
+ To match all urxvt terminals:
+
+     awful.key({modkey}, "e", function()
+                revelation({rule={class="URxvt"}})
+             end)
+ To match clients with class 'foo' or 'bar':
+
+     awful.key({modkey}, "e", function()
+                revelation({
+                            rule{class={"foo", "bar"},
+                            any=true}
+                            })
+            end)
+
+ To exclude the clients,  we set:
+
+     awful.key({modkey}, "e", function()
+             revelation({rule={class="conky"}, is_excluded=true})
+             end)
+
+ To set only collect clients from current tag
+
+     awful.key({modkey}, "e", function()
+                 revelation({rule={class="conky"}, is_excluded=true, 
+                curr_tag_only=true})
+                 end)
+
+## Credits
+
+### Maintenance
+    * Quan Guo <guotsuan@gmail.com>
+    * Perry Hargrave <resixian@gmail.com>
+
+### Contributions, many thanks!
+    * Daniel Hahler <github@thequod.de>
+    * Yauhen Kirylau
+    * Nikola Petrov <nikolavp@gmail.com>
+
+### Original authors
+    * Espen Wiborg <espenhw@grumblesmurf.org>
+    * Julien Danjou <julien@danjou.info>
+
+    (c) 20013-2014 Quan Guo
+    (c) 2009-12 Perry Hargrave
+    (c) 2008 Espen Wiborg, Julien Danjou

revelation/init.lua

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+-- revelation.lua
+--
+-- Library that implements Expose like behavior.
+--
+-- @author Perry Hargrave resixian@gmail.com
+-- @author Espen Wiborg espenhw@grumblesmurf.org
+-- @author Julien Danjou julien@danjou.info
+-- @auther Quan Guo guotsuan@gmail.com
+--
+-- @copyright 2008 Espen Wiborg, Julien Danjou
+-- @copyright 2015 Quan Guo
+--
+
+
+local beautiful    = require("beautiful")
+local wibox        = require("wibox")
+local awful        = require('awful')
+local aw_rules     = require('awful.rules')
+local pairs        = pairs
+local setmetatable = setmetatable
+local naughty      = require("naughty")
+local table        = table
+local clock        = os.clock
+local tostring     = tostring
+local capi         = {
+    awesome        = awesome,
+    tag            = tag,
+    client         = client,
+    keygrabber     = keygrabber,
+    mousegrabber   = mousegrabber,
+    mouse          = mouse,
+    screen         = screen
+}
+
+-- disable for now. 
+-- It seems there is not way to pass err handling function into the delayed_call()
+
+local function debuginfo(message)
+    message = message or "No information available"
+    nid = naughty.notify({ text = tostring(message), timeout = 10 })
+end
+
+local delayed_call = (type(timer) ~= 'table' and  require("gears.timer").delayed_call)
+
+local view_only_func
+local toggle_tag_func
+local jump_to_func
+
+
+if type(awful.client.object) == 'table' then
+    view_only_func = function (tag) tag:view_only() end
+    toggle_tag_func = function (t, c) c:toggle_tag(t) end
+    jump_to_func = function(c) c:jump_to() end
+else
+    view_only_func = function (tag) awful.tag.viewonly(tag) end
+    toggle_tag_func = function (t, c) awful.client.toggletag(t, c) end
+    jump_to_func = function(c) awful.client.jumpto(c) end
+end
+
+
+local hintbox = {} -- Table of letter wiboxes with characters as the keys
+local hintindex = {} -- Table of visible clients with the hint letter as the keys
+
+local clients = {} --Table of clients to be exposed after fitlering
+local clientData = {} -- table that holds the positions and sizes of floating clients
+
+local revelation = {
+    -- Name of expose tag.
+    tag_name = "Revelation",
+
+    charorder = "jkluiopyhnmfdsatgvcewqzx1234567890",
+
+    -- Match function can be defined by user.
+    -- Must accept a `rule` and `client` and return `boolean`.
+    -- The rule forms follow `awful.rules` syntax except we also check the
+    -- special `rule.any` key. If its true, then we use the `match.any` function
+    -- for comparison.
+    match = {
+        exact = aw_rules.match,
+        any   = aw_rules.match_any
+    },
+    property_to_watch={
+        maximized            = false,
+        minimized            = false,
+        fullscreen           = false,
+        maximized_horizontal = false,
+        maximized_vertical   = false,
+        sticky               = false,
+        ontop                = false,
+        above                = false,
+        below                = false,
+    },
+    tags_status = {},
+    is_excluded = false,
+    curr_tag_only = false,
+    font = beautiful.revelation_font or "monospace 20",
+    fg = beautiful.revelation_fg_normal or beautiful.fg_normal or "#DCDCCC",
+    bg = beautiful.revelation_bg_normal or beautiful.bg_normal or "#000000",
+    border_color = beautiful.revelation_border_color or beautiful.border_focus or "#DCDCCC",
+    border_width = beautiful.revelation_border_width or beautiful.border_width or 2,
+    hintsize = (type(beautiful.xresources) == 'table' and beautiful.xresources.apply_dpi(beautiful.revelation_hintsize or 50) or 60)
+}
+
+
+
+-- Executed when user selects a client from expose view.
+--
+-- @param restore Function to reset the current tags view.
+local function selectfn(_, t, zt)
+    return function(c)
+        revelation.restore(t, zt)
+        -- Focus and raise
+        --
+        if type(delayed_call) == 'function' then
+            capi.awesome.emit_signal("refresh")
+        end
+
+        if awful.util.table.hasitem(hintindex, c) then
+            if c.minimized then
+                c.minimized = false
+            end
+
+            jump_to_func(c)
+        end
+    end
+end
+
+-- Tags all matching clients with tag t
+-- @param rule The rule. Conforms to awful.rules syntax.
+-- @param clients A table of clients to check.
+-- @param t The tag to give matching clients.
+local function match_clients(rule, _clients, t, is_excluded)
+
+    local mfc = rule.any and revelation.match.any or revelation.match.exact
+    local mf = is_excluded and function(c,_rule) return not mfc(c,_rule) end or mfc
+    local flt
+
+    for _, c in pairs(_clients) do
+        if mf(c, rule) then
+            -- Store geometry before setting their tags
+            clientData[c] = {}
+            clientData[c]["geometry"] = c:geometry()
+            flt = awful.client.property.get(c, "floating")
+            if flt ~= nil then
+                clientData[c]["floating"] = flt
+                awful.client.property.set(c, "floating", false)
+            end
+
+
+            for k,v in pairs(revelation.property_to_watch) do
+                clientData[c][k] = c[k]
+                c[k] = v
+
+            end
+            toggle_tag_func(t, c)
+            if c:isvisible() then 
+                table.insert(clients, c)
+            end
+        end
+    end
+
+end
+
+
+-- Implement Exposé (ala Mac OS X).
+--
+-- @param rule A table with key and value to match. [{class=""}]
+function revelation.expose(args)
+    args = args or {}
+    local rule = args.rule or {}
+    local is_excluded = args.is_excluded or revelation.is_excluded
+    local curr_tag_only = args.curr_tag_only or revelation.curr_tag_only
+
+    local t={}
+    local zt={}
+
+    clients = {}
+    clientData = {}
+
+    for scr=1,capi.screen.count() do
+        t[scr] = awful.tag.new({revelation.tag_name},
+            scr, awful.layout.suit.fair)[1]
+        zt[scr] = awful.tag.new({revelation.tag_name.."_zoom"},
+            scr, awful.layout.suit.fair)[1]
+
+        if curr_tag_only then
+            match_clients(rule, awful.client.visible(scr), t[scr], is_excluded)
+        else
+            match_clients(rule, capi.client.get(scr), t[scr], is_excluded)
+        end
+
+        view_only_func(t[scr])
+    end
+
+    if type(delayed_call) == 'function' then
+        capi.awesome.emit_signal("refresh")
+    end
+    -- No need for awesome WM 3.5.6: capi.awesome.emit_signal("refresh")
+    --
+    local status, err=pcall(revelation.expose_callback, t, zt, clients) 
+
+    --revelation.expose_callback(t, zt)
+    if not status then
+        debuginfo('Oops!, something is wrong in revelation.expose_callback!')
+
+        if err.msg then 
+            debuginfo(err.msg) 
+        end
+
+        if err.code then 
+            debuginfo('error code is '.. tostring(err.code)) 
+        end
+
+        revelation.restore(t, zt)
+
+    end
+end
+
+
+function revelation.restore(t, zt)
+    for scr=1, capi.screen.count() do
+        awful.tag.history.restore(scr)
+        t[scr].screen = nil
+    end
+
+    capi.keygrabber.stop()
+    capi.mousegrabber.stop()
+    
+     for _, c in pairs(clients) do
+            if clientData[c] then
+                for k,v in pairs(clientData[c]) do
+                    if v ~= nil then
+                        if k== "geometry" then
+                            c:geometry(v)
+                        elseif k == "floating" then
+                            awful.client.property.set(c, "floating", v)
+                        else
+                            c[k]=v
+                        end
+                    end
+                end
+            end
+      end
+    
+    for scr=1, capi.screen.count() do
+        t[scr].activated = false
+        zt[scr].activated = false
+    end
+
+    for i,j in pairs(hintindex) do
+        hintbox[i].visible = false
+    end
+end
+
+local function hintbox_display_toggle(c, show)
+    for char, thisclient in pairs(hintindex) do
+        if char and char ~= c then
+            hintindex[char] = thisclient
+            if show then
+                hintbox[char].visible = true
+            else
+                hintbox[char].visible = false
+            end
+
+        end
+    end
+end
+
+local function hintbox_pos(char)
+    local client = hintindex[char]
+    local geom = client:geometry()
+    hintbox[char].x = math.floor(geom.x + geom.width/2 - revelation.hintsize/2)
+    hintbox[char].y = math.floor(geom.y + geom.height/2 - revelation.hintsize/2)
+end
+
+
+function revelation.expose_callback(t, zt, clientlist)
+
+    hintindex = {}
+    for i,thisclient in pairs(clientlist) do
+        -- Move wiboxes to center of visible windows and populate hintindex
+        local char = revelation.charorder:sub(i,i)
+        if char and char ~= '' then
+            hintindex[char] = thisclient
+            hintbox_pos(char)
+            hintbox[char].visible = true
+            hintbox[char].screen = thisclient.screen
+        end
+    end
+
+    local zoomed = false
+    local zoomedClient = nil
+    local key_char_zoomed = nil
+
+    capi.keygrabber.run(function (mod, key, event) 
+        local c
+        if event == "release" then return true end
+
+        if awful.util.table.hasitem(mod, "Shift") then
+            key_char = string.lower(key)
+            c = hintindex[key_char]
+            if not zoomed and c ~= nil then
+                --debuginfo(c.screen)
+                view_only_func(zt[c.screen.index or c.screen])
+                toggle_tag_func(zt[c.screen.index or c.screen], c)
+                zoomedClient = c
+                key_char_zoomed = key_char
+                zoomed = true
+                -- update the position of this hintbox, since it is zoomed
+                if type(delayed_call) == 'function' then 
+                    capi.awesome.emit_signal("refresh")
+                end
+                hintbox_pos(key_char)
+                hintbox_display_toggle(key_char, false)
+
+
+            elseif zoomedClient ~= nil then
+                awful.tag.history.restore(zoomedClient.screen.index or zoomedClient.screen)
+                toggle_tag_func(zt[zoomedClient.screen.index or zoomedClient.screen], zoomedClient)
+                hintbox_display_toggle(key_char_zoomed,  true)
+                if type(delayed_call) == 'function' then 
+                    capi.awesome.emit_signal("refresh")
+                end
+                hintbox_pos(key_char_zoomed) 
+
+                zoomedClient = nil
+                zoomed = false
+                key_char_zoomed = nil
+            end
+        end
+
+        if hintindex[key] then
+            --client.focus = hintindex[key]
+            --hintindex[key]:raise()
+
+            selectfn(restore,t, zt)(hintindex[key])
+
+            for i,j in pairs(hintindex) do
+                hintbox[i].visible = false
+            end
+
+            return false
+        end
+
+        if key == "Escape" then
+            if zoomedClient ~= nil then 
+                awful.tag.history.restore(zoomedClient.screen)
+                toggle_tag_func(zt[zoomedClient.screen.index or zoomedClient.screen], zoomedClient)
+                hintbox_display_toggle(string.lower(key),  true)
+                if type(delayed_call) == 'function' then 
+                    capi.awesome.emit_signal("refresh")
+                end
+                hintbox_pos(key_char_zoomed) 
+
+                zoomedClient = nil
+                zoomed = false
+            else
+                for i,j in pairs(hintindex) do
+                    hintbox[i].visible = false
+                end
+                revelation.restore(t, zt)
+                return false
+            end
+        end
+
+        return true
+    end) 
+
+    local pressedMiddle = false
+
+    local lastClient = nil
+    capi.mousegrabber.run(function(mouse)
+        local c
+
+        if type(awful.client.object) == 'table' then
+            c = capi.mouse.current_client
+        else
+            c = awful.mouse.client_under_pointer()
+        end
+        if c then
+          lastClient = c
+        else
+          local current_wibox = capi.mouse.current_wibox
+          if current_wibox then
+            for i = 1, #revelation.charorder do
+              local char = revelation.charorder:sub(i,i)
+              if hintbox[char] == current_wibox then
+                c = lastClient
+                break
+              end
+            end
+          end
+        end
+        local key_char = awful.util.table.hasitem(hintindex, c) 
+        if mouse.buttons[1] == true then
+            if c ~= nil then
+                selectfn(restore, t, zt)(c)
+
+                for i,j in pairs(hintindex) do
+                    hintbox[i].visible = false
+                end
+                return false
+            else
+                return true
+            end
+        elseif mouse.buttons[2] == true and pressedMiddle == false and c ~= nil then
+            -- is true whenever the button is down.
+            pressedMiddle = true
+            -- extra variable needed to prevent script from spam-closing windows
+            --
+            if zoomed == true and zoomedClient ~=nil then 
+                awful.tag.history.restore(zoomedClient.screen.index or zoomedClient.screen)
+                toggle_tag_func(zt[zoomedClient.screen.index or zoomedClient.screen], zoomedClient)
+            end
+            c:kill()
+            hintbox[key_char].visible = false
+            hintindex[key_char] = nil
+            local pos = awful.util.table.hasitem(clients, c)
+            table.remove(clients, pos)
+
+
+            if zoomed == true and zoomedClient ~=nil then 
+                hintbox_display_toggle(key_char_zoomed, true)
+                zoomedClient = nil
+                zoomed = false
+                key_char_zoomed = nil
+            end
+            
+            return true
+
+        elseif mouse.buttons[2] == false and pressedMiddle == true then
+            pressedMiddle = false
+            for key, _ in pairs(hintindex) do
+                hintbox_pos(key) 
+            end
+        elseif mouse.buttons[3] == true then
+            if not zoomed and c ~= nil then
+                view_only_func(zt[c.screen.index or c.screen])
+                toggle_tag_func(zt[c.screen.index or c.screen], c)
+                if key_char ~= nil then 
+                    hintbox_display_toggle(key_char, false)
+                    if type(delayed_call) == 'function' then 
+                        capi.awesome.emit_signal("refresh")
+                    end
+                    hintbox_pos(key_char) 
+                end
+                zoomedClient = c
+                zoomed = true
+                key_char_zoomed = key_char
+            elseif zoomedClient ~= nil then
+                awful.tag.history.restore(zoomedClient.screen.index or zoomedClient.screen)
+                toggle_tag_func(zt[zoomedClient.screen.index or zoomedClient.screen], zoomedClient)
+                hintbox_display_toggle(key_char_zoomed, true)
+                if type(delayed_call) == 'function' then 
+                    capi.awesome.emit_signal("refresh")
+                end
+                hintbox_pos(key_char_zoomed) 
+
+                zoomedClient = nil
+                zoomed = false
+                key_char_zoomed = nil
+            end
+        end
+
+        return true
+        --Strange but on my machine only fleur worked as a string.
+        --stole it from
+        --https://github.com/Elv13/awesome-configs/blob/master/widgets/layout/desktopLayout.lua#L175
+    end,"fleur")
+
+end
+
+-- Create the wiboxes, but don't show them
+--
+function revelation.init(args)
+    local letterbox = {}
+
+    args = args or {}
+
+    revelation.tag_name = args.tag_name or revelation.tag_name
+    if args.match then
+        revelation.match.exact = args.match.exact or revelation.match.exact
+        revelation.match.any = args.match.any or revelation.match.any
+    end
+
+    revelation.charorder = args.charorder or revelation.charorder
+
+    for i = 1, #revelation.charorder do
+        local char = revelation.charorder:sub(i,i)
+        hintbox[char] = wibox({
+          fg=revelation.fg,
+          bg=revelation.bg,
+          border_color=revelation.border_color,
+          border_width=revelation.border_width
+        })
+        hintbox[char].ontop = true
+        hintbox[char].width = revelation.hintsize
+        hintbox[char].height = revelation.hintsize
+        letterbox[char] = wibox.widget.textbox()
+        letterbox[char]:set_markup(char.upper(char))
+        letterbox[char]:set_font(revelation.font)
+        letterbox[char]:set_align("center")
+        hintbox[char]:set_widget(letterbox[char])
+    end
+end
+
+setmetatable(revelation, { __call = function(_, ...) return revelation.expose(...) end })
+
+return revelation