Fixed another 1 pixel discrepancy

[etc/awesome.git] / layout / cascadetile.lua

diff --git a/layout/cascadetile.lua b/layout/cascadetile.lua
index a94bbed6fee277f2477a1f7571fd48cad63b166c..3baf3e9809b37aa001471037d5b2edd3a5cf0d52 100644 (file)
--- a/layout/cascadetile.lua
+++ b/layout/cascadetile.lua
@@ -2,6 +2,7 @@
 --[[
                                                   
      Licensed under GNU General Public License v2 
+      * (c) 2014,      projektile                 
       * (c) 2013,      Luke Bonham                
       * (c) 2010-2012, Peter Hofmann              
                                                   
@@ -30,29 +31,35 @@ function cascadetile.arrange(p)
 
     -- It's a bit hard to demonstrate the behaviour with ASCII-images...
     --
-    --       (1)              (2)              (3)              (4)
-    --   +-----+---+      +-----+---+      +-----+---+      +-----+---+
-    --   |     |   |      |     |   |      |     |   |      |     | 4 |
-    --   |     |   |      |     | 2 |      |     | 3 |      |     |   |
-    --   |  1  |   |  ->  |  1  |   |  ->  |  1  |   |  ->  |  1  +---+
-    --   |     |   |      |     +---+      |     +---+      |     | 3 |
-    --   |     |   |      |     |   |      |     | 2 |      |     |---|
-    --   |     |   |      |     |   |      |     |---|      |     | 2 |
-    --   |     |   |      |     |   |      |     |   |      |     |---|
-    --   +-----+---+      +-----+---+      +-----+---+      +-----+---+
+    --         (1)                 (2)                 (3)                 (4)
+    --   +----------+---+    +----------+---+    +----------+---+    +----------+---+
+    --   |          |   |    |          | 3 |    |          | 4 |    |         +---+|
+    --   |          |   | -> |          |   | -> |         +---++ -> |        +---+|+
+    --   |  1       | 2 |    |  1      +---++    |  1      | 3 ||    |  1    +---+|+|
+    --   |          |   |    |         | 2 ||    |        +---++|    |      +---+|+ |
+    --   |          |   |    |         |   ||    |        | 2 | |    |      | 2 |+  |
+    --   +----------+---+    +---------+---++    +--------+---+-+    +------+---+---+
 
     -- A useless gap (like the dwm patch) can be defined with
     -- beautiful.useless_gap_width.
-    local useless_gap = tonumber(beautiful.useless_gap_width)
-    if useless_gap == nil
-    then
-        useless_gap = 0
-    end
+    local useless_gap = tonumber(beautiful.useless_gap_width) or 0
+    if useless_gap < 0 then useless_gap = 0 end
+
+    -- A global border can be defined with
+    -- beautiful.global_border_width
+    local global_border = tonumber(beautiful.global_border_width) or 0
+    if global_border < 0 then global_border = 0 end
 
     -- Screen.
     local wa = p.workarea
     local cls = p.clients
 
+    -- Borders are factored in.
+    wa.height = wa.height - (global_border * 2)
+    wa.width = wa.width - (global_border * 2)
+    wa.x = wa.x + global_border
+    wa.y = wa.y + global_border
+
     -- Width of main column?
     local t = tag.selected(p.screen)
     local mwfact
@@ -92,14 +99,18 @@ function cascadetile.arrange(p)
     if #cls > 0
     then
         -- Main column, fixed width and height.
-        local c = cls[#cls]
+        local c = cls[1]
         local g = {}
-        local mainwid = wa.width * mwfact
+        -- Subtracting the useless_gap width from the work area width here
+        -- makes this mwfact calculation work the same as in uselesstile.
+        -- Rounding is necessary to prevent the rendered size of slavewid
+        -- from being 1 pixel off when the result is not an integer.
+        local mainwid = math.floor((wa.width - useless_gap) * mwfact)
         local slavewid = wa.width - mainwid
 
         if overlap_main == 1
         then
-            g.width = wa.width
+            g.width = wa.width - 2*c.border_width
 
             -- The size of the main window may be reduced a little bit.
             -- This allows you to see if there are any windows below the
@@ -108,10 +119,10 @@ function cascadetile.arrange(p)
             -- overlapping everything else.
             g.width = g.width - cascadetile.extra_padding
         else
-            g.width = mainwid
+            g.width = mainwid - 2*c.border_width
         end
 
-        g.height = wa.height
+        g.height = wa.height - 2*c.border_width
         g.x = wa.x
         g.y = wa.y
         if useless_gap > 0
@@ -130,19 +141,21 @@ function cascadetile.arrange(p)
                 g.width = g.width - useless_gap
             end
         end
+        if g.width < 1 then g.width = 1 end
+        if g.height < 1 then g.height = 1 end
         c:geometry(g)
 
         -- Remaining clients stacked in slave column, new ones on top.
         if #cls > 1
         then
-            for i = (#cls - 1),1,-1
+            for i = 2,#cls
             do
                 c = cls[i]
                 g = {}
-                g.width = slavewid - current_offset_x
-                g.height = wa.height - current_offset_y
-                g.x = wa.x + mainwid + (how_many - i) * cascadetile.offset_x
-                g.y = wa.y + (i - 1) * cascadetile.offset_y
+                g.width = slavewid - current_offset_x - 2*c.border_width
+                g.height = wa.height - current_offset_y - 2*c.border_width
+                g.x = wa.x + mainwid + (how_many - (i - 1)) * cascadetile.offset_x
+                g.y = wa.y + (i - 2) * cascadetile.offset_y
                 if useless_gap > 0
                 then
                     g.width = g.width - 2 * useless_gap
@@ -150,6 +163,8 @@ function cascadetile.arrange(p)
                     g.x = g.x + useless_gap
                     g.y = g.y + useless_gap
                 end
+                if g.width < 1 then g.width = 1 end
+                if g.height < 1 then g.height = 1 end
                 c:geometry(g)
             end
         end