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handle corrupted usedbbox in Document:getUsedBBoxDimensions()

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This commit is contained in:
Qingping Hou
2012-12-07 16:42:27 -05:00
parent dc37921973
commit 683c7eee2c
1 changed files with 16 additions and 8 deletions
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24
frontend/document/document.lua
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@@ -124,16 +124,24 @@ function Document:getPageDimensions(pageno, zoom, rotation)
return native_dimen
end
--[[
This method returns pagesize if bbox is corrupted
--]]
function Document:getUsedBBoxDimensions(pageno, zoom, rotation)
ubbox = self:getUsedBBox(pageno)
ubbox_dimen = Geom:new{
x = ubbox.x0,
y = ubbox.y0,
w = ubbox.x1 - ubbox.x0,
h = ubbox.y1 - ubbox.y0,
}
if zoom ~= 1 then
ubbox_dimen:transformByScale(zoom)
if ubbox.x0 < 0 or ubbox.y0 < 0 or ubbox.x1 < 0 or ubbox.y1 < 0 then
-- if document's bbox info is corrupted, we use the page size
ubbox_dimen = self:getPageDimensions(pageno, zoom, rotation)
else
ubbox_dimen = Geom:new{
x = ubbox.x0,
y = ubbox.y0,
w = ubbox.x1 - ubbox.x0,
h = ubbox.y1 - ubbox.y0,
}
if zoom ~= 1 then
ubbox_dimen:transformByScale(zoom)
end
end
return ubbox_dimen
end