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@ -1,3 +1,4 @@
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local DocumentRegistry = require("document/documentregistry")
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local UIManager = require("ui/uimanager")
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local Screen = require("ui/screen")
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local DEBUG = require("dbg")
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@ -6,132 +7,24 @@ local _ = require("gettext")
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local Screensaver = {
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}
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function Screensaver:getCoverPicture(file)
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local contentopf
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local contentpath
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local epub_folder = "temp/epub"
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local function check_extension(cover)
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if cover then
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local itype = string.lower(string.match(cover, ".+%.([^.]+)") or "")
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if not (itype == "png" or itype == "jpg" or itype == "jpeg") then
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cover = nil
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end
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end
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return cover
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end
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local function getValue(zipfile,which_line,to_find,excludecheck)
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local f = io.open(zipfile,"r")
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local i
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if f then
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local line = f:read()
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while line and not i do
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i = line:lower():find(which_line:lower()) -- found something
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if i then
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f.close()
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line = line:match(to_find .. "\"([^\"]+)\".*")
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if not excludecheck then line = check_extension(line) end
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if line then
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return line
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else
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i = nil
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end
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end
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if not i then line = f:read() end
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end
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f.close()
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end
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end
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local function guess(extension)
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local cover = contentpath .. "Images/cover." .. extension
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pcall(os.execute("unzip \"" .. file .. "\" \"" .. cover .. "\" -oq -d " .. epub_folder))
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cover = epub_folder .. "/" .. cover
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if not io.open(cover,"r") then
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cover = nil
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end
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return cover
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end
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local function try_content_opf(which_line,to_find,addimage)
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local cover = getValue(epub_folder .. "/" .. contentopf,which_line,to_find)
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local imageadd
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if cover then
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if addimage then
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imageadd = "Images/"
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else
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imageadd = ""
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end
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cover = contentpath .. imageadd .. cover
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pcall(os.execute("unzip \"" .. file .. "\" \"" .. cover .. "\" -oq -d " .. epub_folder))
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cover = epub_folder .. "/" .. cover
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if not io.open(cover,"r") then cover = nil end
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end
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return check_extension(cover)
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end
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local function checkoldfile(cover)
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if io.open(cover) then
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return cover
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end
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end
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local cover
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local oldfile = "temp/" .. file:gsub("/","#") .. "."
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cover = checkoldfile(oldfile .. "jpg")
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if not cover then cover = checkoldfile(oldfile .. "jpeg") end
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if not cover then cover = checkoldfile(oldfile .. "png") end
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if not cover then
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if file then
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pcall(lfs.mkdir("temp"))
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pcall(os.execute("rm -rf " .. epub_folder))
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pcall(lfs.mkdir(epub_folder))
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pcall(os.execute("unzip \"" .. file .. "\" cover.jpeg -oq -d " .. epub_folder))
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if io.open(epub_folder .. "/cover.jpeg","r") then -- picture in main folder
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cover = epub_folder .. "/cover.jpeg" -- found one
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else
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pcall(os.execute("unzip \"" .. file .. "\" \"META-INF/container.xml\" -oq -d " .. epub_folder)) -- read container.xml
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contentopf = getValue(epub_folder .. "/META-INF/container.xml","^%s*<rootfile ","full[-]path=",true)
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if contentopf then
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contentpath = contentopf:match("(.*)[/][^/]+")
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if contentpath then
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contentpath = contentpath .. "/"
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else
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contentpath = ""
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end
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pcall(os.execute("unzip \"" .. file .. "\" \"" .. contentopf .. "\" -oq -d " .. epub_folder)) -- read content.opf
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cover = try_content_opf("^%s*<meta name=\"cover\"","content=",true) -- Make Room
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if not cover then cover = try_content_opf('id="cover',"item href=",false) end -- Kishon
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if not cover then cover = try_content_opf("cover","href=",true) end
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if not cover then cover = try_content_opf("cover","=",true) end
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if not cover then cover = try_content_opf("cover","=",false) end
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if not cover then guess("jpg") end
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if not cover then guess("jpeg") end
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if not cover then guess("png") end
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end
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end
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end
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cover=check_extension(cover)
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if cover then
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oldfile = oldfile .. string.lower(string.match(cover, ".+%.([^.]+)"))
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pcall(os.execute('mv "' .. cover .. '" "' .. oldfile .. '"'))
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cover = oldfile
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pcall(os.execute('find temp/#mnt#* -mtime +30 -exec rm -v {} \\;'))
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function Screensaver:getCoverImage(file)
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local ImageWidget = require("ui/widget/imagewidget")
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local doc = DocumentRegistry:openDocument(file)
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if doc then
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local image = doc:getCoverPageImage()
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doc:close()
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if image then
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return ImageWidget:new{
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image = image,
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width = Screen:getWidth(),
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height = Screen:getHeight(),
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}
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end
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pcall(os.execute("rm -rf " .. epub_folder))
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end
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return cover
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end
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function Screensaver:getRandomPicture(dir)
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function Screensaver:getRandomImage(dir)
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local ImageWidget = require("ui/widget/imagewidget")
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local pics = {}
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local i = 0
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math.randomseed(os.time())
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@ -144,35 +37,36 @@ function Screensaver:getRandomPicture(dir)
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end
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end
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end
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return pics[math.random(i)]
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local image = pics[math.random(i)]
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if image then
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image = dir .. image
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if lfs.attributes(image, "mode") == "file" then
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return ImageWidget:new{
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file = image,
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width = Screen:getWidth(),
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height = Screen:getHeight(),
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}
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end
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end
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end
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function Screensaver:show()
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DEBUG("show screensaver")
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local InfoMessage = require("ui/widget/infomessage")
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local ImageWidget = require("ui/widget/imagewidget")
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local file = nil
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-- first check book cover image
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if KOBO_SCREEN_SAVER_LAST_BOOK then
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file = self:getCoverPicture(G_reader_settings:readSetting("lastfile"))
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-- then screensaver image
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local lastfile = G_reader_settings:readSetting("lastfile")
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self.suspend_msg = self:getCoverImage(lastfile)
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-- then screensaver directory image
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elseif type(KOBO_SCREEN_SAVER) == "string" then
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file = KOBO_SCREEN_SAVER
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local file = KOBO_SCREEN_SAVER
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if lfs.attributes(file, "mode") == "directory" then
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if string.sub(file,string.len(file)) ~= "/" then
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file = file .. "/"
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end
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local dummy = self:getRandomPicture(file)
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if dummy then file = file .. dummy end
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self.suspend_msg = self:getRandomImage(file)
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end
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end
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if file and lfs.attributes(file, "mode") == "file" then
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self.suspend_msg = ImageWidget:new{
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file = file,
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width = Screen:getWidth(),
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height = Screen:getHeight(),
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}
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end
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-- fallback to suspended message
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if not self.suspend_msg then
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self.suspend_msg = InfoMessage:new{ text = _("Suspended") }
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chrox
10 years ago