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clipping page bbox

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chrox
2014-02-16 19:49:18 +08:00
parent b1acbb2446
commit 0eee130f5a
1 changed files with 6 additions and 2 deletions
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8
frontend/document/document.lua
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@@ -150,9 +150,13 @@ This method returns pagesize if bbox is corrupted
--]]
function Document:getUsedBBoxDimensions(pageno, zoom, rotation)
local bbox = self:getPageBBox(pageno)
-- clipping page bbox
if bbox.x0 < 0 then bbox.x0 = 0 end
if bbox.y0 < 0 then bbox.y0 = 0 end
if bbox.x1 < 0 then bbox.x1 = 0 end
if bbox.y1 < 0 then bbox.y1 = 0 end
local ubbox_dimen = nil
if (bbox.x0 < 0) or (bbox.y0 < 0) or (bbox.x1 < 0) or (bbox.y1 < 0)
or (bbox.x0 == bbox.x1) or (bbox.y0 == bbox.y1) then
if (bbox.x0 > bbox.x1) or (bbox.y0 > bbox.y1) then
-- if document's bbox info is corrupted, we use the page size
ubbox_dimen = self:getPageDimensions(pageno, zoom, rotation)
else