Foxit PDF SDK
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Instance Methods | |
(FSLRStructureElement *) | - getRootElement |
Get the root element of structure tree. More... | |
(id) | - initWithOther: |
Constructor, with another context object. More... | |
(id) | - initWithPage: |
Constructor, from a PDF Page object. More... | |
(BOOL) | - isEmpty |
Check whether current object is empty or not. More... | |
(FSProgressive *) | - startParse: |
Start to parse layout recognition for related PDF page. More... | |
This class can be used to parse layout recognition to get the root element.
- (FSLRStructureElement *) getRootElement |
Get the root element of structure tree.
Please ensure current context object has been parsed successfully before calling this function; otherwise, no valid root structure element can be retrieved.
- (id) initWithOther: | (FSLRContext*) | other |
Constructor, with another context object.
[in] | other | Another context object. |
- (id) initWithPage: | (FSPDFPage*) | page |
Constructor, from a PDF Page object.
[in] | page | A valid PDF page object. |
- (BOOL) isEmpty |
Check whether current object is empty or not.
When the current object is empty, that means current object is useless.
- (FSProgressive *) startParse: | (id<FSPauseCallback>) | pause |
Start to parse layout recognition for related PDF page.
It may take a long time to do parsing, so Foxit PDF SDK uses a progressive process to do this. If there is any error occurs in parseing progress, this function will throw exception. Please refere to class foxit::Exception and values starting from FSErrFile.
[in] | pause | Pause callback object which decides if the parsing process needs to be paused. This can be nil which means not to pause during the parsing process. If this is not nil, it should be a valid pause object implemented by user. |