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gears.wallpaper: Only finish own surfaces

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If the caller provides a file name, these function load the image, set
it as the wallpaper and make sure that the memory used for the image
data is freed immediately. However, this was also done when the caller
provided a cairo surface, thus breaking their surface.

Fix the code so that it does not finish surfaces that it did not create
itself.

Fixes: https://github.com/awesomeWM/awesome/issues/1570
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2017-02-18 17:45:44 +01:00
parent 17fe135a9f
commit 4fc396ec57
1 changed files with 16 additions and 4 deletions
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20
lib/gears/wallpaper.lua
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@ -111,6 +111,7 @@ end
-- @see gears.color
function wallpaper.centered(surf, s, background)
local geom, cr = wallpaper.prepare_context(s)
local original_surf = surf
surf = surface.load_uncached(surf)
background = color(background)
@ -126,7 +127,9 @@ function wallpaper.centered(surf, s, background)
cr:clip()
cr:set_source_surface(surf, 0, 0)
cr:paint()
surf:finish()
if surf ~= original_surf then
surf:finish()
end
end
--- Set a tiled wallpaper.
@ -141,13 +144,16 @@ function wallpaper.tiled(surf, s, offset)
cr:translate(offset.x, offset.y)
end
local original_surf = surf
surf = surface.load_uncached(surf)
local pattern = cairo.Pattern.create_for_surface(surf)
pattern.extend = cairo.Extend.REPEAT
cr.source = pattern
cr.operator = cairo.Operator.SOURCE
cr:paint()
surf:finish()
if surf ~= original_surf then
surf:finish()
end
end
--- Set a maximized wallpaper.
@ -159,6 +165,7 @@ end
-- @param offset This can be set to a table with entries x and y.
function wallpaper.maximized(surf, s, ignore_aspect, offset)
local geom, cr = wallpaper.prepare_context(s)
local original_surf = surf
surf = surface.load_uncached(surf)
local w, h = surface.get_size(surf)
local aspect_w = geom.width / w
@ -181,7 +188,9 @@ function wallpaper.maximized(surf, s, ignore_aspect, offset)
cr:set_source_surface(surf, 0, 0)
cr.operator = cairo.Operator.SOURCE
cr:paint()
surf:finish()
if surf ~= original_surf then
surf:finish()
end
end
--- Set a fitting wallpaper.
@ -193,6 +202,7 @@ end
-- @see gears.color
function wallpaper.fit(surf, s, background)
local geom, cr = wallpaper.prepare_context(s)
local original_surf = surf
surf = surface.load_uncached(surf)
background = color(background)
@ -213,7 +223,9 @@ function wallpaper.fit(surf, s, background)
cr:scale(scale, scale)
cr:set_source_surface(surf, 0, 0)
cr:paint()
surf:finish()
if surf ~= original_surf then
surf:finish()
end
end
return wallpaper