mirror of
https://github.com/koreader/koreader
synced 2024-11-10 01:10:34 +00:00
51 lines
1.2 KiB
Lua
51 lines
1.2 KiB
Lua
require "cache"
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require "ui/geometry"
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PdfDocument = Document:new{
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_document = false,
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-- muPDF manages its own additional cache
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mupdf_cache_size = 5 * 1024 * 1024,
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dc_null = DrawContext.new()
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}
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function PdfDocument:init()
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local ok
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ok, self._document = pcall(pdf.openDocument, self.file, self.mupdf_cache_size)
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if not ok then
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self.error_message = self.doc -- will contain error message
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return
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end
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self.is_open = true
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self.info.has_pages = true
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if self._document:needsPassword() then
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self.is_locked = true
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else
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self:_readMetadata()
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end
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end
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function PdfDocument:unlock(password)
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if not self._document:authenticatePassword(password) then
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self._document:close()
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return false, "wrong password"
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end
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self.is_locked = false
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return self:_readMetadata()
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end
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function PdfDocument:getUsedBBox(pageno)
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local hash = "pgubbox|"..self.file.."|"..pageno
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local cached = Cache:check(hash)
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if cached then
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return cached.data
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end
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local page = self._document:openPage(pageno)
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local used = {}
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used.x, used.y, used.w, used.h = page:getUsedBBox()
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Cache:insert(hash, CacheItem:new{ used })
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page:close()
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return used
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end
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DocumentRegistry:addProvider("pdf", "application/pdf", PdfDocument)
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