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added Shift+B to add current page to jumpstack

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This allows us to bootstap jumpstack if we don't have table of contents
This commit is contained in:
Dobrica Pavlinusic
2012-03-02 01:44:52 +01:00
parent 5de749f457
commit 07420bda07
1 changed files with 33 additions and 25 deletions
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58
pdfreader.lua
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@@ -248,6 +248,33 @@ function PDFReader:show(no)
self.slot_visible = slot;
end
function PDFReader:add_jump(pageno)
local jump_item = nil
-- add current page to jump_stack if no in
for _t,_v in ipairs(self.jump_stack) do
if _v.page == pageno then
jump_item = _v
table.remove(self.jump_stack, _t)
elseif _v.page == no then
-- the page we jumped to should not be show in stack
table.remove(self.jump_stack, _t)
end
end
-- create a new one if not found
if not jump_item then
jump_item = {
page = pageno,
datetime = os.date("%Y-%m-%d %H:%M:%S"),
}
end
-- insert at the start
table.insert(self.jump_stack, 1, jump_item)
if #self.jump_stack > 10 then
-- remove the last element to keep the size less than 10
table.remove(self.jump_stack)
end
end
-- change current page and cache next page after rendering
function PDFReader:goto(no)
if no < 1 or no > self.doc:getPages() then
@@ -256,30 +283,7 @@ function PDFReader:goto(no)
-- for jump_stack
if self.pageno and math.abs(self.pageno - no) > 1 then
local jump_item = nil
-- add current page to jump_stack if no in
for _t,_v in ipairs(self.jump_stack) do
if _v.page == self.pageno then
jump_item = _v
table.remove(self.jump_stack, _t)
elseif _v.page == no then
-- the page we jumped to should not be show in stack
table.remove(self.jump_stack, _t)
end
end
-- create a new one if not found
if not jump_item then
jump_item = {
page = self.pageno,
datetime = os.date("%Y-%m-%d %H:%M:%S"),
}
end
-- insert at the start
table.insert(self.jump_stack, 1, jump_item)
if #self.jump_stack > 10 then
-- remove the last element to keep the size less than 10
table.remove(self.jump_stack)
end
self:add_jump(self.pageno)
end
self.pageno = no
@@ -446,7 +450,11 @@ function PDFReader:inputloop()
elseif ev.code == KEY_T then
self:showTOC()
elseif ev.code == KEY_B then
self:showJumpStack()
if self.shiftmode then
self:add_jump(self.pageno)
else
self:showJumpStack()
end
elseif ev.code == KEY_J then
self:setrotate( self.globalrotate + 10 )
elseif ev.code == KEY_K then