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Diffstat (limited to 'awesome/lib/gears/wallpaper.lua')
| -rw-r--r-- | awesome/lib/gears/wallpaper.lua | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/awesome/lib/gears/wallpaper.lua b/awesome/lib/gears/wallpaper.lua deleted file mode 100644 index 70ecf48..0000000 --- a/awesome/lib/gears/wallpaper.lua +++ /dev/null @@ -1,221 +0,0 @@ ---------------------------------------------------------------------------- --- @author Uli Schlachter --- @copyright 2012 Uli Schlachter --- @module gears.wallpaper ---------------------------------------------------------------------------- - -local cairo = require("lgi").cairo -local color = require("gears.color") -local surface = require("gears.surface") -local timer = require("gears.timer") -local root = root - -local wallpaper = { mt = {} } - -local function root_geometry() - local width, height = root.size() - return { x = 0, y = 0, width = width, height = height } -end - --- Information about a pending wallpaper change, see prepare_context() -local pending_wallpaper = nil - -local function get_screen(s) - return s and screen[s] -end - ---- Prepare the needed state for setting a wallpaper. --- This function returns a cairo context through which a wallpaper can be drawn. --- The context is only valid for a short time and should not be saved in a --- global variable. --- @param s The screen to set the wallpaper on or nil for all screens --- @return[1] The available geometry (table with entries width and height) --- @return[1] A cairo context that the wallpaper should be drawn to -function wallpaper.prepare_context(s) - s = get_screen(s) - - local root_width, root_height = root.size() - local geom = s and s.geometry or root_geometry() - local source, target, cr - - if not pending_wallpaper then - -- Prepare a pending wallpaper - source = surface(root.wallpaper()) - target = source:create_similar(cairo.Content.COLOR, root_width, root_height) - - -- Set the wallpaper (delayed) - timer.delayed_call(function() - local paper = pending_wallpaper - pending_wallpaper = nil - wallpaper.set(paper.surface) - paper.surface:finish() - end) - elseif root_width > pending_wallpaper.width or root_height > pending_wallpaper.height then - -- The root window was resized while a wallpaper is pending - source = pending_wallpaper.surface - target = source:create_similar(cairo.Content.COLOR, root_width, root_height) - else - -- Draw to the already-pending wallpaper - source = nil - target = pending_wallpaper.surface - end - - cr = cairo.Context(target) - - if source then - -- Copy the old wallpaper to the new one - cr:save() - cr.operator = cairo.Operator.SOURCE - cr:set_source_surface(source, 0, 0) - cr:paint() - cr:restore() - end - - pending_wallpaper = { - surface = target, - width = root_width, - height = root_height - } - - -- Only draw to the selected area - cr:translate(geom.x, geom.y) - cr:rectangle(0, 0, geom.width, geom.height) - cr:clip() - - return geom, cr -end - ---- Set the current wallpaper. --- @param pattern The wallpaper that should be set. This can be a cairo surface, --- a description for gears.color or a cairo pattern. --- @see gears.color -function wallpaper.set(pattern) - if cairo.Surface:is_type_of(pattern) then - pattern = cairo.Pattern.create_for_surface(pattern) - end - if type(pattern) == "string" or type(pattern) == "table" then - pattern = color(pattern) - end - if not cairo.Pattern:is_type_of(pattern) then - error("wallpaper.set() called with an invalid argument") - end - root.wallpaper(pattern._native) -end - ---- Set a centered wallpaper. --- @param surf The wallpaper to center. Either a cairo surface or a file name. --- @param s The screen whose wallpaper should be set. Can be nil, in which case --- all screens are set. --- @param background The background color that should be used. Gets handled via --- gears.color. The default is black. --- @see gears.color -function wallpaper.centered(surf, s, background) - local geom, cr = wallpaper.prepare_context(s) - surf = surface.load_uncached(surf) - background = color(background) - - -- Fill the area with the background - cr.operator = cairo.Operator.SOURCE - cr.source = background - cr:paint() - - -- 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:clip() - cr:set_source_surface(surf, 0, 0) - cr:paint() - surf:finish() -end - ---- Set a tiled wallpaper. --- @param surf The wallpaper to tile. Either a cairo surface or a file name. --- @param s The screen whose wallpaper should be set. Can be nil, in which case --- all screens are set. --- @param offset This can be set to a table with entries x and y. -function wallpaper.tiled(surf, s, offset) - local _, cr = wallpaper.prepare_context(s) - - if offset then - cr:translate(offset.x, offset.y) - end - - 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() -end - ---- Set a maximized wallpaper. --- @param surf The wallpaper to set. Either a cairo surface or a file name. --- @param s The screen whose wallpaper should be set. Can be nil, in which case --- all screens are set. --- @param ignore_aspect If this is true, the image's aspect ratio is ignored. --- The default is to honor the aspect ratio. --- @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) - surf = surface.load_uncached(surf) - local w, h = surface.get_size(surf) - local aspect_w = geom.width / w - local aspect_h = geom.height / h - - if not ignore_aspect then - aspect_h = math.max(aspect_w, aspect_h) - aspect_w = math.max(aspect_w, aspect_h) - end - cr:scale(aspect_w, aspect_h) - - if offset then - cr:translate(offset.x, offset.y) - elseif not ignore_aspect then - local scaled_width = geom.width / aspect_w - local scaled_height = geom.height / aspect_h - cr:translate((scaled_width - w) / 2, (scaled_height - h) / 2) - end - - cr:set_source_surface(surf, 0, 0) - cr.operator = cairo.Operator.SOURCE - cr:paint() - surf:finish() -end - ---- Set a fitting wallpaper. --- @param surf The wallpaper to set. Either a cairo surface or a file name. --- @param s The screen whose wallpaper should be set. Can be nil, in which case --- all screens are set. --- @param background The background color that should be used. Gets handled via --- gears.color. The default is black. --- @see gears.color -function wallpaper.fit(surf, s, background) - local geom, cr = wallpaper.prepare_context(s) - surf = surface.load_uncached(surf) - background = color(background) - - -- Fill the area with the background - cr.operator = cairo.Operator.SOURCE - cr.source = background - cr:paint() - - -- Now fit the surface - local w, h = surface.get_size(surf) - local scale = geom.width / w - if h * scale > geom.height then - scale = geom.height / h - end - 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() - surf:finish() -end - -return wallpaper - --- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80 |