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62 lines
2.0 KiB
Lua
62 lines
2.0 KiB
Lua
ReaderPaging = InputContainer:new{
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key_events = {
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GotoNextPage = { {Input.group.PgFwd}, doc = "go to next page", event = "GotoPageRel", args = 1 },
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GotoPrevPage = { {Input.group.PgBack}, doc = "go to previous page", event = "GotoPageRel", args = -1 },
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GotoFirst = { {"1"}, doc = "go to start", event = "GotoPercent", args = 0},
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Goto11 = { {"2"}, doc = "go to 11%", event = "GotoPercent", args = 11},
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Goto22 = { {"3"}, doc = "go to 22%", event = "GotoPercent", args = 22},
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Goto33 = { {"4"}, doc = "go to 33%", event = "GotoPercent", args = 33},
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Goto44 = { {"5"}, doc = "go to 44%", event = "GotoPercent", args = 44},
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Goto55 = { {"6"}, doc = "go to 55%", event = "GotoPercent", args = 55},
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Goto66 = { {"7"}, doc = "go to 66%", event = "GotoPercent", args = 66},
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Goto77 = { {"8"}, doc = "go to 77%", event = "GotoPercent", args = 77},
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Goto88 = { {"9"}, doc = "go to 88%", event = "GotoPercent", args = 88},
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GotoLast = { {"0"}, doc = "go to end", event = "GotoPercent", args = 100},
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},
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current_page = 0,
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number_of_pages = 0
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}
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function ReaderPaging:init()
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self.number_of_pages = self.ui.document.info.number_of_pages
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end
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-- wrapper for bounds checking
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function ReaderPaging:gotoPage(number)
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if number == self.current_page then
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return true
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end
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if number > self.number_of_pages
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or number < 1 then
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return false
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end
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debug("going to page number", number)
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-- this is an event to allow other controllers to be aware of this change
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self.ui:handleEvent(Event:new("PageUpdate", number))
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return true
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end
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function ReaderPaging:onPageUpdate(new_page_no)
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self.current_page = new_page_no
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end
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function ReaderPaging:onGotoPercent(percent)
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debug("goto document offset in percent:", percent)
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local dest = math.floor(self.number_of_pages * percent / 100)
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if dest < 1 then dest = 1 end
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if dest > self.number_of_pages then
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dest = self.number_of_pages
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end
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self:gotoPage(dest)
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return true
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end
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function ReaderPaging:onGotoPageRel(diff)
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debug("goto relative page:", diff)
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self:gotoPage(self.current_page + diff)
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return true
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end
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