From dd3658bb1c3ce60459f4a824339dbeab45d9737c Mon Sep 17 00:00:00 2001
From: Anatolii Aniskovych <lin.aaa.lin@gmail.com>
Date: Wed, 16 May 2018 23:37:37 +0300
Subject: [PATCH 1/3] awful.placement: Ignore fullscreen/maximized clients in
 no_overlap()

Fullscreen/maximized client takes full workspace area making free space detection logic useless.
---
 lib/awful/placement.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/awful/placement.lua b/lib/awful/placement.lua
index db4dd87f..d0da647c 100644
--- a/lib/awful/placement.lua
+++ b/lib/awful/placement.lua
@@ -874,7 +874,10 @@ function placement.no_overlap(c, args)
     local curlay = layout.get()
     local areas = { screen.workarea }
     for _, cl in pairs(cls) do
-        if cl ~= c and cl.type ~= "desktop" and (cl.floating or curlay == layout.suit.floating) then
+        if cl ~= c
+           and cl.type ~= "desktop"
+           and (cl.floating or curlay == layout.suit.floating)
+           and not (cl.maximized or cl.fullscreen) then
             areas = grect.area_remove(areas, area_common(cl))
         end
     end

From da418b56ab2f93b45c58317c611bffe74198e9df Mon Sep 17 00:00:00 2001
From: Anatolii Aniskovych <lin.aaa.lin@gmail.com>
Date: Fri, 18 May 2018 23:44:35 +0300
Subject: [PATCH 2/3] gears.geometry: Make area_intersect_area() public

---
 lib/gears/geometry.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/gears/geometry.lua b/lib/gears/geometry.lua
index 70628888..876fb1e6 100644
--- a/lib/gears/geometry.lua
+++ b/lib/gears/geometry.lua
@@ -151,7 +151,7 @@ end
 -- @param a The area.
 -- @param b The other area.
 -- @return True if they intersect, false otherwise.
-local function area_intersect_area(a, b)
+function gears.geometry.rectangle.area_intersect_area(a, b)
     return (b.x < a.x + a.width
             and b.x + b.width > a.x
             and b.y < a.y + a.height
@@ -194,7 +194,7 @@ end
 function gears.geometry.rectangle.area_remove(areas, elem)
     for i = #areas, 1, -1 do
         -- Check if the 'elem' intersect
-        if area_intersect_area(areas[i], elem) then
+        if gears.geometry.rectangle.area_intersect_area(areas[i], elem) then
             -- It does? remove it
             local r = table.remove(areas, i)
             local inter = gears.geometry.rectangle.get_intersection(r, elem)

From cbfe8274be63a7b5e8a0b1a60da6a333b1d8eac1 Mon Sep 17 00:00:00 2001
From: Anatolii Aniskovych <lin.aaa.lin@gmail.com>
Date: Fri, 18 May 2018 23:55:39 +0300
Subject: [PATCH 3/3] awful.placement: Keep client position when no space
 available in no_overlap() (#2139)

---
 lib/awful/placement.lua | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/lib/awful/placement.lua b/lib/awful/placement.lua
index d0da647c..273bbbf7 100644
--- a/lib/awful/placement.lua
+++ b/lib/awful/placement.lua
@@ -908,13 +908,18 @@ function placement.no_overlap(c, args)
     -- This makes sure to have the whole screen's area in case it has been
     -- removed.
     if not found then
-        if #areas == 0 then
-            areas = { screen.workarea }
-        end
-        for _, r in ipairs(areas) do
-            if r.width * r.height > new.width * new.height then
-                new = r
+        if #areas > 0 then
+            for _, r in ipairs(areas) do
+                if r.width * r.height > new.width * new.height then
+                    new = r
+                end
             end
+        elseif grect.area_intersect_area(geometry, screen.workarea) then
+            new.x = geometry.x
+            new.y = geometry.y
+        else
+            new.x = screen.workarea.x
+            new.y = screen.workarea.y
         end
     end