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koreader/frontend/document/picdocument.lua

37 lines
941 B
Lua

local Document = require("document/document")
local DrawContext = require("ffi/drawcontext")
local pic = nil
local PicDocument = Document:new{
_document = false,
is_pic = true,
dc_null = DrawContext.new()
}
function PicDocument:init()
if not pic then pic = require("ffi/pic") end
local ok
ok, self._document = pcall(pic.openDocument, self.file)
if not ok then
error("Failed to open jpeg image")
end
self.info.has_pages = true
self.info.configurable = false
self:_readMetadata()
end
function PicDocument:getUsedBBox(pageno)
return { x0 = 0, y0 = 0, x1 = self._document.width, y1 = self._document.height }
end
function PicDocument:register(registry)
registry:addProvider("jpeg", "image/jpeg", self)
registry:addProvider("jpg", "image/jpeg", self)
registry:addProvider("png", "image/png", self)
registry:addProvider("gif", "image/gif", self)
end
return PicDocument