background container: Deprecate shape_clip property

The previous commit removed the implementation of this property.

Signed-off-by: Uli Schlachter <psychon@znc.in>

lib/wibox/container/background.lua

@@ -268,20 +268,16 @@ function background:get_shape_border_color()
     return self._private.shape_border_color
 end
 
---- When a `shape` is set, make sure nothing is drawn outside of it.
---@DOC_wibox_container_background_clip_EXAMPLE@
--- @property shape_clip
--- @tparam boolean value If the shape clip is enable
-
 function background:set_shape_clip(value)
-    if self._private.shape_clip == value then return end
-
-    self._private.shape_clip = value
-    self:emit_signal("widget::redraw_needed")
+    if value then return end
+    require("gears.debug").print_warning("shape_clip property of background container was removed."
+        .. " Use wibox.layout.stack instead if you want shape_clip=false.")
 end
 
 function background:get_shape_clip()
-    return self._private.shape_clip or false
+    require("gears.debug").print_warning("shape_clip property of background container was removed."
+        .. " Use wibox.layout.stack instead if you want shape_clip=false.")
+    return true
 end
 
 --- The background image to use

tests/examples/wibox/container/background/clip.lua

@@ -1,35 +0,0 @@
---DOC_GEN_IMAGE --DOC_HIDE
-local parent    = ... --DOC_HIDE
-local wibox     = require("wibox") --DOC_HIDE
-local gears     = {shape = require("gears.shape")} --DOC_HIDE
-local beautiful = require("beautiful") --DOC_HIDE
-
-parent : setup {
-    {
-        -- Some content may be outside of the shape
-        {
-            text   = "Hello\nworld!",
-            widget = wibox.widget.textbox
-        },
-        shape              = gears.shape.circle,
-        bg                 = beautiful.bg_normal,
-        shape_border_color = beautiful.border_color,
-        widget             = wibox.container.background
-    },
-    {
-        -- To solve this, clip the content
-        {
-            text   = "Hello\nworld!",
-            widget = wibox.widget.textbox
-        },
-        shape_clip         = true,
-        shape              = gears.shape.circle,
-        bg                 = beautiful.bg_normal,
-        shape_border_color = beautiful.border_color,
-        widget             = wibox.container.background
-    },
-    spacing = 10,
-    layout  = wibox.layout.fixed.vertical
-}
-
---DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80