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support goto relative page number

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We can input relative page number now in the reader goto dialog.
Goto "+4" will page forward 4 pages and goto "-4" will page
backward 4 pages.

This implements #1437.
This commit is contained in:
chrox
2015-03-12 15:45:58 +08:00
parent ea76d91ed4
commit 992e769aaf
3 changed files with 25 additions and 18 deletions
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5
frontend/apps/reader/modules/readerpaging.lua
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@@ -799,6 +799,11 @@ function ReaderPaging:onGotoPage(number)
return true
end
function ReaderPaging:onGotoRelativePage(number)
self:gotoPage(self.current_page + number)
return true
end
function ReaderPaging:onGotoPercentage(percentage)
if percentage < 0 then percentage = 0 end
if percentage > 1 then percentage = 1 end