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Vocabulary builder: support extracting context from pdfs (#9622)

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Move getSelectedWordContext(), now document specific,
from ReaderHighlight into each document module.
This commit is contained in:
weijiuqiao
2022-10-25 18:23:18 +08:00
committed by GitHub
parent 58613d66e7
commit edf7cc9a61
6 changed files with 82 additions and 20 deletions
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22
frontend/document/credocument.lua
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@@ -716,6 +716,28 @@ function CreDocument:getNextVisibleChar(xp)
return self._document:getNextVisibleChar(xp)
end
function CreDocument:getSelectedWordContext(word, nb_words, pos0, pos1)
local pos_start = pos0
local pos_end = pos1
for i=0, nb_words do
local start = self:getPrevVisibleWordStart(pos_start)
if start then pos_start = start
else break end
end
for i=0, nb_words do
local ending = self:getNextVisibleWordEnd(pos_end)
if ending then pos_end = ending
else break end
end
local prev = self:getTextFromXPointers(pos_start, pos0)
local next = self:getTextFromXPointers(pos1, pos_end)
return prev, next
end
function CreDocument:drawCurrentView(target, x, y, rect, pos)
if self.buffer and (self.buffer.w ~= rect.w or self.buffer.h ~= rect.h) then
self.buffer:free()