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author | Jay Berkenbilt <ejb@ql.org> | 2018-12-24 23:54:48 +0100 |
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committer | Jay Berkenbilt <ejb@ql.org> | 2019-01-01 14:07:21 +0100 |
commit | 104fd6da522c8828571580cb30f324c3cbe7283f (patch) | |
tree | ecf6b20dd9fbd6f70c53efda935504114f23701f /include/qpdf/QPDFAnnotationObjectHelper.hh | |
parent | 5059ec0d35547c0b3328c3089221b7cb3c3ac45d (diff) | |
download | qpdf-104fd6da522c8828571580cb30f324c3cbe7283f.tar.zst |
Add matrix and annotation appearance stream handling
Generate page content fragment for rendering appearance streams
including all matrix calculation.
Diffstat (limited to 'include/qpdf/QPDFAnnotationObjectHelper.hh')
-rw-r--r-- | include/qpdf/QPDFAnnotationObjectHelper.hh | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/qpdf/QPDFAnnotationObjectHelper.hh b/include/qpdf/QPDFAnnotationObjectHelper.hh index e7e1a372..76ff0eac 100644 --- a/include/qpdf/QPDFAnnotationObjectHelper.hh +++ b/include/qpdf/QPDFAnnotationObjectHelper.hh @@ -72,6 +72,24 @@ class QPDFAnnotationObjectHelper: public QPDFObjectHelper QPDFObjectHandle getAppearanceStream(std::string const& which, std::string const& state = ""); + // Return a matrix that transforms from the annotation's + // appearance stream's coordinates to the page's coordinates. This + // method also honors the annotation's NoRotate flag if set. The + // matrix is returned as a string representing the six floating + // point numbers to be passed to a cm operator. Returns the empty + // string if it is unable to compute the matrix for any reason. + // The value "rotate" should be set to the page's /Rotate value or + // 0 if none. + QPDF_DLL + std::string getAnnotationAppearanceMatrix(int rotate); + + // Generate text suitable for addition to the containing page's + // content stream that replaces this annotation's appearance + // stream. The value "rotate" should be set to the page's /Rotate + // value or 0 if none. + QPDF_DLL + std::string getPageContentForAppearance(int rotate); + private: class Members { |