require "cache" require "ui/geometry" require "ui/screen" require "ui/reader/readerconfig" require "document/koptinterface" PdfDocument = Document:new{ _document = false, -- muPDF manages its own additional cache mupdf_cache_size = 5 * 1024 * 1024, dc_null = DrawContext.new(), screen_size = Screen:getSize(), screen_dpi = Screen:getDPI(), options = KoptOptions, configurable = Configurable, koptinterface = KoptInterface, } function PdfDocument:init() self.configurable:loadDefaults(self.options) local ok ok, self._document = pcall(pdf.openDocument, self.file, self.mupdf_cache_size) if not ok then self.error_message = self.doc -- will contain error message return end self.is_open = true self.info.has_pages = true self.info.configurable = true if self._document:needsPassword() then self.is_locked = true else self:_readMetadata() end end function PdfDocument:unlock(password) if not self._document:authenticatePassword(password) then self._document:close() return false, "wrong password" end self.is_locked = false return self:_readMetadata() end function PdfDocument:getUsedBBox(pageno) local hash = "pgubbox|"..self.file.."|"..pageno local cached = Cache:check(hash) if cached then return cached.ubbox end local page = self._document:openPage(pageno) local used = {} used.x0, used.y0, used.x1, used.y1 = page:getUsedBBox() local pwidth, pheight = page:getSize(self.dc_null) -- clamp to page BBox if used.x0 < 0 then used.x0 = 0 end if used.x1 > pwidth then used.x1 = pwidth end if used.y0 < 0 then used.y0 = 0 end if used.y1 > pheight then used.y1 = pheight end --@TODO give size for cacheitem? 02.12 2012 (houqp) Cache:insert(hash, CacheItem:new{ ubbox = used, }) page:close() return used end function PdfDocument:getPageDimensions(pageno, zoom, rotation) if self.configurable.text_wrap == 1 then return self.koptinterface:getPageDimensions(self, pageno, zoom, rotation) else return Document.getPageDimensions(self, pageno, zoom, rotation) end end function PdfDocument:renderPage(pageno, rect, zoom, rotation, gamma, render_mode) if self.configurable.text_wrap == 1 then return self.koptinterface:renderPage(self, pageno, rect, zoom, rotation, render_mode) else return Document.renderPage(self, pageno, rect, zoom, rotation, gamma, render_mode) end end function PdfDocument:hintPage(pageno, zoom, rotation, gamma, render_mode) if self.configurable.text_wrap == 1 then self.koptinterface:hintPage(self, pageno, zoom, rotation, gamma, render_mode) else Document.hintPage(self, pageno, zoom, rotation, gamma, render_mode) end end function PdfDocument:drawPage(target, x, y, rect, pageno, zoom, rotation, gamma, render_mode) if self.configurable.text_wrap == 1 then self.koptinterface:drawPage(self, target, x, y, rect, pageno, zoom, rotation, render_mode) else Document.drawPage(self, target, x, y, rect, pageno, zoom, rotation, gamma, render_mode) end end DocumentRegistry:addProvider("pdf", "application/pdf", PdfDocument)