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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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31
PdfForQtLib/sources/pdfdrawspacecontroller.h
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@ -97,15 +97,14 @@ public:
/// page and page rectangle, in which the page is contained.
struct LayoutItem
{
constexpr inline explicit LayoutItem() : blockIndex(-1), pageIndex(-1), pageRotation(PageRotation::None) { }
constexpr inline explicit LayoutItem(PDFInteger blockIndex, PDFInteger pageIndex, PageRotation rotation, const QRectF& pageRectMM) :
blockIndex(blockIndex), pageIndex(pageIndex), pageRotation(rotation), pageRectMM(pageRectMM) { }
constexpr inline explicit LayoutItem() : blockIndex(-1), pageIndex(-1) { }
constexpr inline explicit LayoutItem(PDFInteger blockIndex, PDFInteger pageIndex, const QRectF& pageRectMM) :
blockIndex(blockIndex), pageIndex(pageIndex), pageRectMM(pageRectMM) { }
bool isValid() const { return pageIndex != -1; }
PDFInteger blockIndex;
PDFInteger pageIndex;
PageRotation pageRotation;
QRectF pageRectMM;
};
@ -138,6 +137,12 @@ public:
/// any page on the screen will fit this bounding box, regardless of mode (single/two columns, etc.).
QSizeF getReferenceBoundingBox() const;
/// Returns page rotation
PageRotation getPageRotation() const { return m_pageRotation; }
/// Sets page rotation
void setPageRotation(PageRotation pageRotation);
signals:
void drawSpaceChanged();
void repaintNeeded();
@ -169,6 +174,7 @@ private:
BlockItems m_blockItems;
PDFReal m_verticalSpacingMM;
PDFReal m_horizontalSpacingMM;
PageRotation m_pageRotation;
/// Font cache
PDFFontCache m_fontCache;
@ -196,6 +202,12 @@ public:
/// Updates the draw space area
void update();
/// Creates page point to device point matrix for the given rectangle. It creates transformation
/// from page's media box to the target rectangle.
/// \param page Page, for which we want to create matrix
/// \param rectangle Page rectangle, to which is page media box transformed
QMatrix createPagePointToDevicePointMatrix(const PDFPage* page, const QRectF& rectangle) const;
/// Draws the actually visible pages on the painter using the rectangle.
/// Rectangle is space in the widget, which is used for painting the PDF.
/// \param painter Painter to paint the PDF pages
@ -220,7 +232,9 @@ public:
NavigateNextPage,
NavigatePreviousPage,
NavigateNextStep,
NavigatePreviousStep
NavigatePreviousStep,
RotateRight,
RotateLeft
};
/// Performs the desired operation (for example navigation).
@ -329,13 +343,12 @@ signals:
private:
struct LayoutItem
{
constexpr inline explicit LayoutItem() : pageIndex(-1), pageRotation(PageRotation::None) { }
constexpr inline explicit LayoutItem(PDFInteger pageIndex, PageRotation rotation, const QRect& pageRect) :
pageIndex(pageIndex), pageRotation(rotation), pageRect(pageRect) { }
constexpr inline explicit LayoutItem() : pageIndex(-1) { }
constexpr inline explicit LayoutItem(PDFInteger pageIndex, const QRect& pageRect) :
pageIndex(pageIndex), pageRect(pageRect) { }
PDFInteger pageIndex;
PageRotation pageRotation;
QRect pageRect;
};