1 files changed, 147 insertions, 0 deletions
diff --git a/awesome/lib/awful/layout/suit/magnifier.lua b/awesome/lib/awful/layout/suit/magnifier.lua
new file mode 100644
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--- /dev/null
+++ b/awesome/lib/awful/layout/suit/magnifier.lua
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+---------------------------------------------------------------------------
+--- Magnifier layout module for awful
+--
+-- @author Julien Danjou &lt;julien@danjou.info&gt;
+-- @copyright 2008 Julien Danjou
+-- @module awful.layout
+---------------------------------------------------------------------------
+
+-- Grab environment we need
+local ipairs = ipairs
+local math = math
+local capi =
+{
+    client = client,
+    screen = screen,
+    mouse = mouse,
+    mousegrabber = mousegrabber
+}
+
+--- The magnifier layout layoutbox icon.
+-- @beautiful beautiful.layout_magnifier
+-- @param surface
+-- @see gears.surface
+
+local magnifier = {}
+
+function magnifier.mouse_resize_handler(c, corner, x, y)
+    capi.mouse.coords({ x = x, y = y })
+
+    local wa = c.screen.workarea
+    local center_x = wa.x + wa.width / 2
+    local center_y = wa.y + wa.height / 2
+    local maxdist_pow = (wa.width^2 + wa.height^2) / 4
+
+    local prev_coords = {}
+    capi.mousegrabber.run(function (_mouse)
+                              if not c.valid then return false end
+
+                              for _, v in ipairs(_mouse.buttons) do
+                                  if v then
+                                      prev_coords = { x =_mouse.x, y = _mouse.y }
+                                      local dx = center_x - _mouse.x
+                                      local dy = center_y - _mouse.y
+                                      local dist = dx^2 + dy^2
+
+                                      -- New master width factor
+                                      local mwfact = dist / maxdist_pow
+                                      c.screen.selected_tag.master_width_factor
+                                        = math.min(math.max(0.01, mwfact), 0.99)
+                                      return true
+                                  end
+                              end
+                              return prev_coords.x == _mouse.x and prev_coords.y == _mouse.y
+                          end, corner .. "_corner")
+end
+
+function magnifier.arrange(p)
+    -- Fullscreen?
+    local area = p.workarea
+    local cls = p.clients
+    local focus = p.focus or capi.client.focus
+    local t = p.tag or capi.screen[p.screen].selected_tag
+    local mwfact = t.master_width_factor
+    local fidx
+
+    -- Check that the focused window is on the right screen
+    if focus and focus.screen ~= p.screen then focus = nil end
+
+    -- If no window is focused or focused window is not tiled, take the first tiled one.
+    if (not focus or focus.floating) and #cls > 0 then
+        focus = cls[1]
+        fidx = 1
+    end
+
+    -- Abort if no clients are present
+    if not focus then return end
+
+    local geometry = {}
+    if #cls > 1 then
+        geometry.width = area.width * math.sqrt(mwfact)
+        geometry.height = area.height * math.sqrt(mwfact)
+        geometry.x = area.x + (area.width - geometry.width) / 2
+        geometry.y = area.y + (area.height - geometry.height) /2
+    else
+        geometry.x = area.x
+        geometry.y = area.y
+        geometry.width = area.width
+        geometry.height = area.height
+    end
+
+    local g = {
+        x = geometry.x,
+        y = geometry.y,
+        width = geometry.width,
+        height = geometry.height
+    }
+    p.geometries[focus] = g
+
+    if #cls > 1 then
+        geometry.x = area.x
+        geometry.y = area.y
+        geometry.height = area.height / (#cls - 1)
+        geometry.width = area.width
+
+        -- We don't know the focus window index. Try to find it.
+        if not fidx then
+            for k, c in ipairs(cls) do
+                if c == focus then
+                    fidx = k
+                    break
+                end
+            end
+        end
+
+        -- First move clients that are before focused client.
+        for k = fidx + 1, #cls do
+            p.geometries[cls[k]] = {
+                x = geometry.x,
+                y = geometry.y,
+                width = geometry.width,
+                height = geometry.height
+            }
+            geometry.y = geometry.y + geometry.height
+        end
+
+        -- Then move clients that are after focused client.
+        -- So the next focused window will be the one at the top of the screen.
+        for k = 1, fidx - 1 do
+            p.geometries[cls[k]] = {
+                x = geometry.x,
+                y = geometry.y,
+                width = geometry.width,
+                height = geometry.height
+            }
+            geometry.y = geometry.y + geometry.height
+        end
+    end
+end
+
+--- The magnifier layout.
+-- @clientlayout awful.layout.suit.magnifier
+
+magnifier.name = "magnifier"
+
+return magnifier
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80