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/***************************************************************************
* Copyright (C) 2004 by Enrico Ros <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifndef _KPDF_PAGE_H_
#define _KPDF_PAGE_H_
#include <qmap.h>
#include <qvaluelist.h>
class QPixmap;
class QRect;
class TextPage;
class KPDFPageTransition;
class HighlightRect;
class Annotation;
/**
* @short A rect in normalized [0,1] coordinates.
*/
class NormalizedRect
{
public:
double left, top, right, bottom;
NormalizedRect();
NormalizedRect( double l, double t, double r, double b );
NormalizedRect( const QRect & r, double xScale, double yScale );
bool contains( double x, double y ) const;
bool intersects( const NormalizedRect & normRect ) const;
bool intersects( double l, double t, double r, double b ) const;
QRect geometry( int xScale, int yScale ) const;
};
/**
* @short NormalizedRect that contains a reference to an object.
*
* These rects contains a pointer to a kpdf object (such as a link or something
* like that). The pointer is read and stored as 'void pointer' so cast is
* performed by accessors based on the value returned by objectType(). Objects
* are reparented to this class.
*
* Type / Class correspondency tab:
* - Link : class KPDFLink : description of a link
* - Image : class KPDFImage : description of an image (n/a)
*/
class ObjectRect : public NormalizedRect
{
public:
// definition of the types of storable objects
enum ObjectType { Link, Image };
// default constructor: initialize all parameters
ObjectRect( double l, double t, double r, double b, ObjectType typ, void * obj );
~ObjectRect();
// query type and get a const pointer to the stored object
inline ObjectType objectType() const { return m_objectType; }
inline const void * pointer() const { return m_pointer; }
private:
ObjectType m_objectType;
void * m_pointer;
};
/**
* @short Collector for all the data belonging to a page.
*
* The KPDFPage class contains pixmaps (referenced using observers id as key),
* a search page (a class used internally for retrieving text), rect classes
* (that describe links or other active areas in the current page) and more.
*
* All coordinates are normalized to the page, so {x,y} are valid in [0,1]
* range as long as NormalizedRect components.
*
* Note: The class takes ownership of all objects.
*/
class KPDFPage
{
public:
KPDFPage( uint number, float width, float height, int rotation );
~KPDFPage();
// query properties (const read-only methods)
inline int number() const { return m_number; }
inline int rotation() const { return m_rotation; }
inline float width() const { return m_width; }
inline float height() const { return m_height; }
inline float ratio() const { return m_height / m_width; }
bool hasPixmap( int p_id, int width = -1, int height = -1 ) const;
bool hasSearchPage() const;
bool hasBookmark() const;
bool hasObjectRect( double x, double y ) const;
bool hasHighlights( int s_id = -1 ) const;
//bool hasAnnotation( double x, double y ) const;
bool hasTransition() const;
NormalizedRect * findText( const QString & text, bool keepCase, NormalizedRect * last = 0 ) const;
const QString getText( const NormalizedRect & rect ) const;
const ObjectRect * hasObject( ObjectRect::ObjectType type, double x, double y ) const;
//const Annotation * getAnnotation( double x, double y ) const;
const KPDFPageTransition * getTransition() const;
// operations: set/delete contents (by KPDFDocument)
void setPixmap( int p_id, QPixmap * pixmap );
void setSearchPage( TextPage * text );
void setBookmark( bool state );
void setObjectRects( const QValueList< ObjectRect * > rects );
void setHighlight( int s_id, NormalizedRect * &r, const QColor & color );
//void setAnnotation( Annotation * annotation );
void setTransition( KPDFPageTransition * transition );
void deletePixmap( int p_id );
void deletePixmapsAndRects();
void deleteHighlights( int s_id = -1 );
private:
friend class PagePainter;
int m_number, m_rotation;
float m_width, m_height;
bool m_bookmarked;
QMap< int, QPixmap * > m_pixmaps;
TextPage * m_text;
QValueList< ObjectRect * > m_rects;
QValueList< HighlightRect * > m_highlights;
//QValueList< Annotation * > m_annotations;
KPDFPageTransition * m_transition;
};
/**
* Internal Storage: normalized colored highlight owned by id
*/
struct HighlightRect : public NormalizedRect
{
// searchID of the highlight owner
int s_id;
// color of the highlight
QColor color;
};
#endif
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