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New feature: rotating pages in viewer

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This commit is contained in:
Jakub Melka
2020-02-01 17:28:02 +01:00
parent af83f99f51
commit efca4a3cde
10 changed files with 356 additions and 34 deletions
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35
PdfForQtLib/sources/pdfpage.h
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@@ -39,6 +39,40 @@ enum class PageRotation
Rotate270
};
constexpr PageRotation getPageRotationRotatedRight(PageRotation rotation)
{
switch (rotation)
{
case PageRotation::None:
return PageRotation::Rotate90;
case PageRotation::Rotate90:
return PageRotation::Rotate180;
case PageRotation::Rotate180:
return PageRotation::Rotate270;
case PageRotation::Rotate270:
return PageRotation::None;
}
return PageRotation::None;
}
constexpr PageRotation getPageRotationRotatedLeft(PageRotation rotation)
{
switch (rotation)
{
case PageRotation::None:
return PageRotation::Rotate270;
case PageRotation::Rotate90:
return PageRotation::None;
case PageRotation::Rotate180:
return PageRotation::Rotate90;
case PageRotation::Rotate270:
return PageRotation::Rotate180;
}
return PageRotation::None;
}
/// This class represents attributes, which are inheritable. Also allows merging from
/// parents.
class PDFPageInheritableAttributes
@@ -97,6 +131,7 @@ public:
inline PDFObjectReference getPageReference() const { return m_pageReference; }
QRectF getRotatedMediaBox() const;
QRectF getRotatedMediaBoxMM() const;
QRectF getRotatedCropBox() const;
static QRectF getRotatedBox(const QRectF& rect, PageRotation rotation);