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//========================================================================
//
// 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 XRef;
class OutputDev;
class Links;
class Catalog;
//------------------------------------------------------------------------
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; }
};
//------------------------------------------------------------------------
// 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);
// Destructor.
~PageAttrs();
// Accessors.
PDFRectangle *getBox() { return limitToCropBox ? &cropBox : &mediaBox; }
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; }
Dict *getResourceDict()
{ return resources.isDict() ? resources.getDict() : (Dict *)NULL; }
private:
GBool readBox(Dict *dict, char *key, PDFRectangle *box);
PDFRectangle mediaBox;
PDFRectangle cropBox;
GBool haveCropBox;
GBool limitToCropBox;
PDFRectangle bleedBox;
PDFRectangle trimBox;
PDFRectangle artBox;
int rotate;
Object lastModified;
Object boxColorInfo;
Object group;
Object metadata;
Object pieceInfo;
Object separationInfo;
Object resources;
};
//------------------------------------------------------------------------
// Page
//------------------------------------------------------------------------
class Page {
public:
// Constructor.
Page(XRef *xrefA, int numA, Dict *pageDict, PageAttrs *attrsA);
// Destructor.
~Page();
// Is page valid?
GBool isOk() { return ok; }
// Get page parameters.
PDFRectangle *getBox() { return attrs->getBox(); }
PDFRectangle *getMediaBox() { return attrs->getMediaBox(); }
PDFRectangle *getCropBox() { return attrs->getCropBox(); }
GBool isCropped() { return attrs->isCropped(); }
double getWidth() { return attrs->getBox()->x2 - attrs->getBox()->x1; }
double getHeight() { return attrs->getBox()->y2 - attrs->getBox()->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(); }
// Get resource dictionary.
Dict *getResourceDict() { return attrs->getResourceDict(); }
// Get annotations array.
Object *getAnnots(Object *obj) { return annots.fetch(xref, obj); }
// Get contents.
Object *getContents(Object *obj) { return contents.fetch(xref, obj); }
// Display a page.
void display(OutputDev *out, double dpi, int rotate,
Links *links, Catalog *catalog,
GBool (*abortCheckCbk)(void *data) = NULL,
void *abortCheckCbkData = NULL);
// Display part of a page.
void displaySlice(OutputDev *out, double dpi, int rotate,
int sliceX, int sliceY, int sliceW, int sliceH,
Links *links, Catalog *catalog,
GBool (*abortCheckCbk)(void *data) = NULL,
void *abortCheckCbkData = NULL);
private:
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
GBool ok; // true if page is valid
};
#endif
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