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Merge pull request #778 from chrox/bbox-fix

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clamp used bbox to page dimension
This commit is contained in:
{Qingping,Dave} Hou
2013-03-05 06:16:43 -08:00
parent b9026d9200 8c01b59776
commit 14c5a244a3
1 changed files with 6 additions and 0 deletions
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6
frontend/document/pdfdocument.lua
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@@ -52,6 +52,12 @@ function PdfDocument:getUsedBBox(pageno)
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,