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/***************************************************************************
* Copyright (C) 2004 by Enrico Ros <eros.kde@email.it> *
* Copyright (C) 2004-2005 by Albert Astals Cid <tsdgeos@terra.es> *
* *
* 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_DOCUMENT_H_
#define _KPDF_DOCUMENT_H_
#include <tqobject.h>
#include <tqvaluevector.h>
#include <tqstring.h>
#include <tqdom.h>
#include <kmimetype.h>
class KPDFPage;
class KPDFLink;
class DocumentObserver;
class DocumentViewport;
class DocumentInfo;
class DocumentSynopsis;
class Generator;
class PixmapRequest;
class KListView;
class KPrinter;
class KURL;
/**
* @short The Document. Heart of everything. Actions take place here.
*
* The Document is the main object in KPDF. All views query the Document to
* get data/properties or even for accessing pages (in a 'const' way).
*
* It is designed to keep it detached from the document type (pdf, ps, you
* name it..) so whenever you want to get some data, it asks its internals
* generator to do the job and return results in a format-indepedent way.
*
* Apart from the generator (the currently running one) the document stores
* all the Pages ('KPDFPage' class) of the current document in a vector and
* notifies all the registered DocumentObservers when some content changes.
*
* For a better understanding of hieracies @see README.internals.png
* @see DocumentObserver, KPDFPage
*/
class KPDFDocument : public TQObject
{
Q_OBJECT
public:
KPDFDocument( TQWidget *widget );
~KPDFDocument();
// document handling
bool openDocument( const TQString & docFile, const KURL & url, const KMimeType::Ptr &mime );
void closeDocument();
// misc methods
void addObserver( DocumentObserver * pObserver );
void removeObserver( DocumentObserver * pObserver );
void reparseConfig();
// enum definitions
enum Permission { AllowModify = 1, AllowCopy = 2, AllowPrint = 4, AllowNotes = 8 };
// returns the widget where the document is shown
TQWidget *widget() const;
// query methods (const ones)
bool isOpened() const;
const DocumentInfo * documentInfo() const;
const DocumentSynopsis * documentSynopsis() const;
const KPDFPage * page( uint page ) const;
const DocumentViewport & viewport() const;
uint currentPage() const;
uint pages() const;
KURL currentDocument() const;
bool isAllowed( int /*Document::Permisison(s)*/ ) const;
bool historyAtBegin() const;
bool historyAtEnd() const;
TQString getMetaData( const TQString & key, const TQString & option = TQString() ) const;
bool supportsSearching() const;
bool hasFonts() const;
void putFontInfo(KListView *list);
// perform actions on document / pages
void setViewportPage( int page, int excludeId = -1, bool smoothMove = false );
void setViewport( const DocumentViewport & viewport, int excludeId = -1, bool smoothMove = false );
void setPrevViewport();
void setNextViewport();
void setNextDocumentViewport( const DocumentViewport & viewport );
void requestPixmaps( const TQValueList< PixmapRequest * > & requests );
void requestTextPage( uint page );
enum SearchType { NextMatch, PrevMatch, AllDoc, GoogleAll, GoogleAny };
bool searchText( int searchID, const TQString & text, bool fromStart, bool caseSensitive,
SearchType type, bool moveViewport, const TQColor & color, bool noDialogs = false );
bool continueSearch( int searchID );
void resetSearch( int searchID );
bool continueLastSearch();
void toggleBookmark( int page );
void processLink( const KPDFLink * link );
bool print( KPrinter &printer );
// notifications sent by generator
void requestDone( PixmapRequest * request );
signals:
void close();
void quit();
void linkFind();
void linkGoToPage();
void openURL(const KURL &url);
void linkPresentation();
void linkEndPresentation();
private:
void sendGeneratorRequest();
// memory management related functions
void cleanupPixmapMemory( int bytesOffset = 0 );
int getTotalMemory();
int getFreeMemory();
// more private functions
void loadDocumentInfo();
TQString giveAbsolutePath( const TQString & fileName );
bool openRelativeFile( const TQString & fileName );
Generator * generator;
TQValueVector< KPDFPage * > pages_vector;
class KPDFDocumentPrivate * d;
private slots:
void saveDocumentInfo() const;
void slotTimedMemoryCheck();
};
/**
* @short A view on the document.
*
* The Viewport structure is the 'current view' over the document. Contained
* data is broadcasted between observers to syncronize their viewports to get
* the 'I scroll one view and others scroll too' views.
*/
class DocumentViewport
{
public:
/** data fields **/
// the page nearest the center of the viewport
int pageNumber;
// enum definitions
enum Position { Center = 1, TopLeft = 2};
// if reCenter.enabled, this contains the viewport center
struct {
bool enabled;
double normalizedX;
double normalizedY;
Position pos;
} rePos;
// if autoFit.enabled, page must be autofitted in the viewport
struct {
bool enabled;
bool width;
bool height;
} autoFit;
/** class methods **/
// allowed constructors, don't use others
DocumentViewport( int pageNumber = -1 );
DocumentViewport( const TQString & xmlDesc );
TQString toString() const;
bool operator==( const DocumentViewport & vp ) const;
};
/**
* @short A dom tree containing informations about the document.
*
* The Info structure can be filled in by generators to display metadata
* about the currently opened file.
*/
class DocumentInfo : public TQDomDocument
{
public:
DocumentInfo();
/**
* Sets a value for a special key. The title should be an i18n'ed
* string, since it's used in the document information dialog.
*/
void set( const TQString &key, const TQString &value,
const TQString &title = TQString() );
/**
* Returns the value for a given key or an empty string when the
* key doesn't exist.
*/
TQString get( const TQString &key ) const;
};
/**
* @short A Dom tree that describes the Table of Contents.
*
* The Synopsis (TOC or Table Of Contents for friends) is represented via
* a dom tree where each nod has an internal name (displayed in the listview)
* and one or more attributes.
*
* In the tree the tag name is the 'screen' name of the entry. A tag can have
* attributes. Here follows the list of tag attributes with meaning:
* - Viewport: A string description of the referred viewport
* - ViewportName: A 'named reference' to the viewport that must be converted
* using getMetaData( "NamedViewport", *viewport_name* )
*/
class DocumentSynopsis : public TQDomDocument
{
public:
DocumentSynopsis();
};
#endif
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