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Diffstat (limited to 'xpdf/Page.h')
| -rw-r--r-- | xpdf/Page.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/xpdf/Page.h b/xpdf/Page.h new file mode 100644 index 0000000..fe579e7 --- /dev/null +++ b/xpdf/Page.h @@ -0,0 +1,207 @@ +//======================================================================== +// +// Page.h +// +// Copyright 1996-2003 Glyph & Cog, LLC +// +//======================================================================== + +#ifndef PAGE_H +#define PAGE_H + +#include <aconf.h> + +#ifdef USE_GCC_PRAGMAS +#pragma interface +#endif + +#include "Object.h" + +class Dict; +class PDFDoc; +class XRef; +class OutputDev; +class Links; + +//------------------------------------------------------------------------ + +class PDFRectangle { +public: + double x1, y1, x2, y2; + + PDFRectangle() { x1 = y1 = x2 = y2 = 0; } + PDFRectangle(double x1A, double y1A, double x2A, double y2A) + { x1 = x1A; y1 = y1A; x2 = x2A; y2 = y2A; } + GBool isValid() { return x1 != 0 || y1 != 0 || x2 != 0 || y2 != 0; } + void clipTo(PDFRectangle *rect); +}; + +//------------------------------------------------------------------------ +// PageAttrs +//------------------------------------------------------------------------ + +class PageAttrs { +public: + + // Construct a new PageAttrs object by merging a dictionary + // (of type Pages or Page) into another PageAttrs object. If + // <attrs> is NULL, uses defaults. + PageAttrs(PageAttrs *attrs, Dict *dict, XRef *xref); + + // Construct a new PageAttrs object for an empty page (only used + // when there is an error in the page tree). + PageAttrs(); + + // Destructor. + ~PageAttrs(); + + // Accessors. + PDFRectangle *getMediaBox() { return &mediaBox; } + PDFRectangle *getCropBox() { return &cropBox; } + GBool isCropped() { return haveCropBox; } + PDFRectangle *getBleedBox() { return &bleedBox; } + PDFRectangle *getTrimBox() { return &trimBox; } + PDFRectangle *getArtBox() { return &artBox; } + int getRotate() { return rotate; } + GString *getLastModified() + { return lastModified.isString() + ? lastModified.getString() : (GString *)NULL; } + Dict *getBoxColorInfo() + { return boxColorInfo.isDict() ? boxColorInfo.getDict() : (Dict *)NULL; } + Dict *getGroup() + { return group.isDict() ? group.getDict() : (Dict *)NULL; } + Stream *getMetadata() + { return metadata.isStream() ? metadata.getStream() : (Stream *)NULL; } + Dict *getPieceInfo() + { return pieceInfo.isDict() ? pieceInfo.getDict() : (Dict *)NULL; } + Dict *getSeparationInfo() + { return separationInfo.isDict() + ? separationInfo.getDict() : (Dict *)NULL; } + double getUserUnit() { return userUnit; } + Dict *getResourceDict() + { return resources.isDict() ? resources.getDict() : (Dict *)NULL; } + + // Clip all other boxes to the MediaBox. + void clipBoxes(); + +private: + + GBool readBox(Dict *dict, const char *key, PDFRectangle *box); + + PDFRectangle mediaBox; + PDFRectangle cropBox; + GBool haveCropBox; + PDFRectangle bleedBox; + PDFRectangle trimBox; + PDFRectangle artBox; + int rotate; + Object lastModified; + Object boxColorInfo; + Object group; + Object metadata; + Object pieceInfo; + Object separationInfo; + double userUnit; + Object resources; +}; + +//------------------------------------------------------------------------ +// Page +//------------------------------------------------------------------------ + +class Page { +public: + + // Constructor. + Page(PDFDoc *docA, int numA, Dict *pageDict, PageAttrs *attrsA); + + // Create an empty page (only used when there is an error in the + // page tree). + Page(PDFDoc *docA, int numA); + + // Destructor. + ~Page(); + + // Is page valid? + GBool isOk() { return ok; } + + // Get page parameters. + int getNum() { return num; } + PageAttrs *getAttrs() { return attrs; } + PDFRectangle *getMediaBox() { return attrs->getMediaBox(); } + PDFRectangle *getCropBox() { return attrs->getCropBox(); } + GBool isCropped() { return attrs->isCropped(); } + double getMediaWidth() + { return attrs->getMediaBox()->x2 - attrs->getMediaBox()->x1; } + double getMediaHeight() + { return attrs->getMediaBox()->y2 - attrs->getMediaBox()->y1; } + double getCropWidth() + { return attrs->getCropBox()->x2 - attrs->getCropBox()->x1; } + double getCropHeight() + { return attrs->getCropBox()->y2 - attrs->getCropBox()->y1; } + PDFRectangle *getBleedBox() { return attrs->getBleedBox(); } + PDFRectangle *getTrimBox() { return attrs->getTrimBox(); } + PDFRectangle *getArtBox() { return attrs->getArtBox(); } + int getRotate() { return attrs->getRotate(); } + GString *getLastModified() { return attrs->getLastModified(); } + Dict *getBoxColorInfo() { return attrs->getBoxColorInfo(); } + Dict *getGroup() { return attrs->getGroup(); } + Stream *getMetadata() { return attrs->getMetadata(); } + Dict *getPieceInfo() { return attrs->getPieceInfo(); } + Dict *getSeparationInfo() { return attrs->getSeparationInfo(); } + double getUserUnit() { return attrs->getUserUnit(); } + + // Get resource dictionary. + Dict *getResourceDict() { return attrs->getResourceDict(); } + + // Get annotations array. + Object *getAnnots(Object *obj) { return annots.fetch(xref, obj); } + + // Return a list of links. + Links *getLinks(); + + // Get contents. + Object *getContents(Object *obj) { return contents.fetch(xref, obj); } + + // Get the page's thumbnail image. + Object *getThumbnail(Object *obj) { return thumbnail.fetch(xref, obj); } + + // Display a page. + void display(OutputDev *out, double hDPI, double vDPI, + int rotate, GBool useMediaBox, GBool crop, + GBool printing, + GBool (*abortCheckCbk)(void *data) = NULL, + void *abortCheckCbkData = NULL); + + // Display part of a page. + void displaySlice(OutputDev *out, double hDPI, double vDPI, + int rotate, GBool useMediaBox, GBool crop, + int sliceX, int sliceY, int sliceW, int sliceH, + GBool printing, + GBool (*abortCheckCbk)(void *data) = NULL, + void *abortCheckCbkData = NULL); + + void makeBox(double hDPI, double vDPI, int rotate, + GBool useMediaBox, GBool upsideDown, + double sliceX, double sliceY, double sliceW, double sliceH, + PDFRectangle *box, GBool *crop); + + void processLinks(OutputDev *out); + + // Get the page's default CTM. + void getDefaultCTM(double *ctm, double hDPI, double vDPI, + int rotate, GBool useMediaBox, GBool upsideDown); + +private: + + PDFDoc *doc; + XRef *xref; // the xref table for this PDF file + int num; // page number + PageAttrs *attrs; // page attributes + Object annots; // annotations array + Object contents; // page contents + Object thumbnail; // reference to thumbnail image + GBool ok; // true if page is valid +}; + +#endif |