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Add scale factor to gears.wallpaper.centered (#1653)

This commit is contained in:
Patrick Uven 2017-03-14 20:53:27 +01:00 committed by Daniel Hahler
parent 26fedadc07
commit 008bd185ba
1 changed files with 12 additions and 3 deletions
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15
lib/gears/wallpaper.lua
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@ -108,13 +108,19 @@ end
-- all screens are set.
-- @param background The background color that should be used. Gets handled via
-- gears.color. The default is black.
-- @param scale The scale factor for the wallpaper. Default is 1 (original size).
-- @see gears.color
function wallpaper.centered(surf, s, background)
function wallpaper.centered(surf, s, background, scale)
local geom, cr = wallpaper.prepare_context(s)
local original_surf = surf
surf = surface.load_uncached(surf)
background = color(background)
-- Set default scale if unset
if not scale or scale <= 0 then
scale = 1
end
-- Fill the area with the background
cr.operator = cairo.Operator.SOURCE
cr.source = background
@ -122,9 +128,12 @@ function wallpaper.centered(surf, s, background)
-- Now center the surface
local w, h = surface.get_size(surf)
cr:translate((geom.width - w) / 2, (geom.height - h) / 2)
cr:rectangle(0, 0, w, h)
cr:translate((geom.width - (w * scale)) / 2, (geom.height - (h * scale)) / 2)
cr:rectangle(0, 0, (w * scale), (h * scale))
cr:clip()
cr:scale(scale, scale)
cr:set_source_surface(surf, 0, 0)
cr:paint()
if surf ~= original_surf then