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okular/core/document.h
Albert Astals Cid 3aa8f6aaa4 fix docu 
svn path=/trunk/KDE/kdegraphics/okular/; revision=1162332
2010-08-11 21:01:33 +00:00

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/***************************************************************************
* Copyright (C) 2004-2005 by Enrico Ros <eros.kde@email.it> *
* Copyright (C) 2004-2008 by Albert Astals Cid <aacid@kde.org> *
* *
* 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 _OKULAR_DOCUMENT_H_
#define _OKULAR_DOCUMENT_H_
#include <okular/core/okular_export.h>
#include <okular/core/area.h>
#include <okular/core/global.h>
#include <okular/core/pagesize.h>
#include <QtCore/QObject>
#include <QtCore/QStringList>
#include <QtCore/QVector>
#include <QtXml/QDomDocument>
#include <kmimetype.h>
class QPrinter;
class QPrintDialog;
class KComponentData;
class KBookmark;
class KConfigDialog;
class KXMLGUIClient;
class KUrl;
namespace Okular {
class Annotation;
class BookmarkManager;
class DocumentInfo;
class DocumentObserver;
class DocumentPrivate;
class DocumentSynopsis;
class DocumentViewport;
class EmbeddedFile;
class ExportFormat;
class FontInfo;
class Generator;
class Action;
class Page;
class PixmapRequest;
class SourceReference;
class View;
class VisiblePageRect;
/** IDs for seaches. Globally defined here. **/
#define PART_SEARCH_ID 1
#define PAGEVIEW_SEARCH_ID 2
#define SW_SEARCH_ID 3
#define PRESENTATION_SEARCH_ID 4
/**
* @short The Document. Heart of everything. Actions take place here.
*
* The Document is the main object in Okular. 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 ('Page' 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, Page
*/
class OKULAR_EXPORT Document : public QObject
{
Q_OBJECT
public:
/**
* Creates a new document with the given @p widget as widget to relay GUI things (messageboxes, ...).
*/
explicit Document( QWidget *widget );
/**
* Destroys the document.
*/
~Document();
/**
* Opens the document.
*/
bool openDocument( const QString & docFile, const KUrl & url, const KMimeType::Ptr &mime );
/**
* Closes the document.
*/
void closeDocument();
/**
* Registers a new @p observer for the document.
*/
void addObserver( DocumentObserver *observer );
/**
* Unregisters the given @p observer for the document.
*/
void removeObserver( DocumentObserver *observer );
/**
* Reparses and applies the configuration.
*/
void reparseConfig();
/**
* Returns the widget to be used for relaying GUI things (messageboxes, ...)
*/
QWidget *widget() const;
/**
* Returns whether the document is currently opened.
*/
bool isOpened() const;
/**
* Returns the meta data of the document or 0 if no meta data
* are available.
*/
const DocumentInfo * documentInfo() const;
/**
* Returns the table of content of the document or 0 if no
* table of content is available.
*/
const DocumentSynopsis * documentSynopsis() const;
/**
* Starts the reading of the information about the fonts in the
* document, if available.
*
* The results as well the end of the reading is notified using the
* signals gotFont(), fontReadingProgress() and fontReadingEnded()
*/
void startFontReading();
/**
* Force the termination of the reading of the information about the
* fonts in the document, if running.
*/
void stopFontReading();
/**
* Whether the current document can provide information about the
* fonts used in it.
*/
bool canProvideFontInformation() const;
/**
* Returns the list of embedded files or 0 if no embedded files
* are available.
*/
const QList<EmbeddedFile*> *embeddedFiles() const;
/**
* Returns the page object for the given page @p number or 0
* if the number is out of range.
*/
const Page * page( int number ) const;
/**
* Returns the current viewport of the document.
*/
const DocumentViewport & viewport() const;
/**
* Sets the list of visible page rectangles.
* @see VisiblePageRect
*/
void setVisiblePageRects( const QVector< VisiblePageRect * > & visiblePageRects, int excludeId = -1 );
/**
* Returns the list of visible page rectangles.
*/
const QVector< VisiblePageRect * > & visiblePageRects() const;
/**
* Returns the number of the current page.
*/
uint currentPage() const;
/**
* Returns the number of pages of the document.
*/
uint pages() const;
/**
* Returns the url of the currently opened document.
*/
KUrl currentDocument() const;
/**
* Returns whether the given @p action is allowed in the document.
* @see @ref Permission
*/
bool isAllowed( Permission action ) const;
/**
* Returns whether the document supports searching.
*/
bool supportsSearching() const;
/**
* Returns whether the document supports the listing of page sizes.
*/
bool supportsPageSizes() const;
/**
* Returns the list of supported page sizes or an empty list if this
* feature is not available.
* @see supportsPageSizes()
*/
PageSize::List pageSizes() const;
/**
* Returns whether the document supports the export to ASCII text.
*/
bool canExportToText() const;
/**
* Exports the document as ASCII text and saves it under @p fileName.
*/
bool exportToText( const QString& fileName ) const;
/**
* Returns the list of supported export formats.
* @see ExportFormat
*/
QList<ExportFormat> exportFormats() const;
/**
* Exports the document in the given @p format and saves it under @p fileName.
*/
bool exportTo( const QString& fileName, const ExportFormat& format ) const;
/**
* Returns whether the document history is at the begin.
*/
bool historyAtBegin() const;
/**
* Returns whether the document history is at the end.
*/
bool historyAtEnd() const;
/**
* Returns the meta data for the given @p key and @p option or an empty variant
* if the key doesn't exists.
*/
QVariant metaData( const QString & key, const QVariant & option = QVariant() ) const;
/**
* Returns the current rotation of the document.
*/
Rotation rotation() const;
/**
* If all pages have the same size this method returns it, if the page sizes
* differ an empty size object is returned.
*/
QSizeF allPagesSize() const;
/**
* Returns the size string for the given @p page or an empty string
* if the page is out of range.
*/
QString pageSizeString( int page ) const;
/**
* Returns the gui client of the generator, if it provides one.
*/
KXMLGUIClient* guiClient();
/**
* Sets the current document viewport to the given @p page.
*
* @param excludeId The observer ids which shouldn't be effected by this change.
* @param smoothMove Whether the move shall be animated smoothly.
*/
void setViewportPage( int page, int excludeId = -1, bool smoothMove = false );
/**
* Sets the current document viewport to the given @p viewport.
*
* @param excludeId The observer ids which shouldn't be effected by this change.
* @param smoothMove Whether the move shall be animated smoothly.
*/
void setViewport( const DocumentViewport &viewport, int excludeId = -1, bool smoothMove = false );
/**
* Sets the current document viewport to the next viewport in the
* viewport history.
*/
void setPrevViewport();
/**
* Sets the current document viewport to the previous viewport in the
* viewport history.
*/
void setNextViewport();
/**
* Sets the next @p viewport in the viewport history.
*/
void setNextDocumentViewport( const DocumentViewport &viewport );
/**
* Sets the next @p namedDestination in the viewport history.
*
* @since 0.9 (KDE 4.3)
*/
void setNextDocumentDestination( const QString &namedDestination );
/**
* Sets the zoom for the current document.
*
* @param excludeId The observer ids which shouldn't be effected by this change.
*/
void setZoom( int factor, int excludeId = -1 );
/**
* Describes the possible options for the pixmap requests.
*/
enum PixmapRequestFlag
{
NoOption = 0, ///< No options
RemoveAllPrevious = 1 ///< Remove all the previous requests, even for non requested page pixmaps
};
Q_DECLARE_FLAGS( PixmapRequestFlags, PixmapRequestFlag )
/**
* Sends @p requests for pixmap generation.
*
* The same as requestPixmaps( requests, RemoveAllPrevious );
*/
void requestPixmaps( const QLinkedList<PixmapRequest*> &requests );
/**
* Sends @p requests for pixmap generation.
*
* @param reqOptions the options for the request
*
* @since 0.7 (KDE 4.1)
*/
void requestPixmaps( const QLinkedList<PixmapRequest*> &requests, PixmapRequestFlags reqOptions );
/**
* Sends a request for text page generation for the given page @p number.
*/
void requestTextPage( uint number );
/**
* Adds a new @p annotation to the given @p page.
*/
void addPageAnnotation( int page, Annotation *annotation );
/**
* Modifies the given @p annotation on the given @p page.
*/
void modifyPageAnnotation( int page, Annotation *annotation );
/**
* Removes the given @p annotation from the given @p page.
*/
void removePageAnnotation( int page, Annotation *annotation );
/**
* Removes the given @p annotations from the given @p page.
*/
void removePageAnnotations( int page, const QList<Annotation*> &annotations );
/**
* Sets the text selection for the given @p page.
*
* @param rect The rectangle of the selection.
* @param color The color of the selection.
*/
void setPageTextSelection( int page, RegularAreaRect * rect, const QColor & color );
/**
* Describes the possible search types.
*/
enum SearchType
{
NextMatch, ///< Search next match
PreviousMatch, ///< Search previous match
AllDocument, ///< Search complete document
GoogleAll, ///< Search all words in google style
GoogleAny ///< Search any words in google style
};
/**
* Describes how search ended
*/
enum SearchStatus
{
MatchFound, ///< Any match was found
NoMatchFound, ///< No match was found
SearchCancelled ///< The search was cancelled
};
/**
* Searches the given @p text in the document.
*
* @param searchID The unique id for this search request.
* @param fromStart Whether the search should be started at begin of the document.
* @param caseSensitivity Whether the search is case sensitive.
* @param type The type of the search. @ref SearchType
* @param moveViewport Whether the viewport shall be moved to the position of the matches.
* @param color The highlighting color of the matches.
* @param noDialogs Whether a search dialog shall be shown.
*/
void searchText( int searchID, const QString & text, bool fromStart, Qt::CaseSensitivity caseSensitivity,
SearchType type, bool moveViewport, const QColor & color, bool noDialogs = false );
/**
* Continues the search for the given @p searchID.
*/
void continueSearch( int searchID );
/**
* Continues the search for the given @p searchID, optionally specifying
* a new direction for the search.
*
* @since 0.7 (KDE 4.1)
*/
void continueSearch( int searchID, SearchType type );
/**
* Resets the search for the given @p searchID.
*/
void resetSearch( int searchID );
/**
* Returns the bookmark manager of the document.
*/
BookmarkManager * bookmarkManager() const;
/**
* Processes the given @p action.
*/
void processAction( const Action *action );
/**
* Returns a list of the bookmarked.pages
*/
QList<int> bookmarkedPageList() const;
/**
* Returns the range of the bookmarked.pages
*/
QString bookmarkedPageRange() const;
/**
* Processes/Executes the given source @p reference.
*/
void processSourceReference( const SourceReference *reference );
/**
* Returns whether the document can configure the printer itself.
*/
bool canConfigurePrinter() const;
/**
* What type of printing a document supports
*/
enum PrintingType
{
NoPrinting, ///< Printing Not Supported
NativePrinting, ///< Native Cross-Platform Printing
PostscriptPrinting ///< Postscript file printing
};
/**
* Returns what sort of printing the document supports:
* Native, Postscript, None
*/
PrintingType printingSupport() const;
/**
* Returns whether the document supports printing to both PDF and PS files.
*/
bool supportsPrintToFile() const;
/**
* Prints the document to the given @p printer.
*/
bool print( QPrinter &printer );
/**
* Returns the last print error in case print() failed
* @since 0.11 (KDE 4.5)
*/
QString printError() const;
/**
* Returns a custom printer configuration page or 0 if no
* custom printer configuration page is available.
*/
QWidget* printConfigurationWidget() const;
/**
* Fill the KConfigDialog @p dialog with the setting pages of the
* generators.
*/
void fillConfigDialog( KConfigDialog * dialog );
/**
* Returns the number of generators that have a configuration widget.
*/
int configurableGenerators() const;
/**
* Returns the list with the supported MIME types.
*/
QStringList supportedMimeTypes() const;
/**
* Returns the component data associated with the generator. May be null.
*/
const KComponentData* componentData() const;
/**
* Returns whether the changes to the document (modified annotations,
* values in form fields, etc) can be saved to another document.
*
* @since 0.7 (KDE 4.1)
*/
bool canSaveChanges() const;
/**
* Save the document and the optional changes to it to the specified
* @p fileName.
*
* @since 0.7 (KDE 4.1)
*/
bool saveChanges( const QString &fileName );
/**
* Save the document and the optional changes to it to the specified
* @p fileName and returns a @p errorText if fails.
*
* @since 0.10 (KDE 4.4)
*/
bool saveChanges( const QString &fileName, QString *errorText );
/**
* Register the specified @p view for the current document.
*
* It is unregistered from the previous document, if any.
*
* @since 0.7 (KDE 4.1)
*/
void registerView( View *view );
/**
* Unregister the specified @p view from the current document.
*
* @since 0.7 (KDE 4.1)
*/
void unregisterView( View *view );
/**
* Gets the font data for the given font
*
* @since 0.8 (KDE 4.2)
*/
QByteArray fontData(const FontInfo &font) const;
/**
* Opens a document archive.
*
* @since 0.8 (KDE 4.2)
*/
bool openDocumentArchive( const QString & docFile, const KUrl & url );
/**
* Saves a document archive.
*
* @since 0.8 (KDE 4.2)
*/
bool saveDocumentArchive( const QString &fileName );
/**
* Asks the generator to dynamically generate a SourceReference for a given
* page number and absolute X and Y position on this page.
*
* @attention Ownership of the returned SourceReference is transferred to the caller.
* @note This method does not call processSourceReference( const SourceReference * )
*
* @since 0.10 (KDE 4.4)
*/
const SourceReference * dynamicSourceReference( int pageNr, double absX, double absY );
public Q_SLOTS:
/**
* This slot is called whenever the user changes the @p rotation of
* the document.
*/
void setRotation( int rotation );
/**
* This slot is called whenever the user changes the page @p size
* of the document.
*/
void setPageSize( const PageSize &size );
/**
* Cancels the current search
*/
void cancelSearch();
Q_SIGNALS:
/**
* This signal is emitted whenever an action requests a
* document close operation.
*/
void close();
/**
* This signal is emitted whenever an action requests an
* application quit operation.
*/
void quit();
/**
* This signal is emitted whenever an action requests a
* find operation.
*/
void linkFind();
/**
* This signal is emitted whenever an action requests a
* goto operation.
*/
void linkGoToPage();
/**
* This signal is emitted whenever an action requests a
* start presentation operation.
*/
void linkPresentation();
/**
* This signal is emitted whenever an action requests an
* end presentation operation.
*/
void linkEndPresentation();
/**
* This signal is emitted whenever an action requests an
* open url operation for the given document @p url.
*/
void openUrl( const KUrl &url );
/**
* This signal is emitted whenever an error occurred.
*
* @param text The description of the error.
* @param duration The time in seconds the message should be shown to the user.
*/
void error( const QString &text, int duration );
/**
* This signal is emitted to signal a warning.
*
* @param text The description of the warning.
* @param duration The time in seconds the message should be shown to the user.
*/
void warning( const QString &text, int duration );
/**
* This signal is emitted to signal a notice.
*
* @param text The description of the notice.
* @param duration The time in seconds the message should be shown to the user.
*/
void notice( const QString &text, int duration );
/**
* Emitted when a new font is found during the reading of the fonts of
* the document.
*/
void gotFont( const Okular::FontInfo& font );
/**
* Reports the progress when reading the fonts in the document.
*
* \param page is the page that was just finished to scan for fonts
*/
void fontReadingProgress( int page );
/**
* Reports that the reading of the fonts in the document is finished.
*/
void fontReadingEnded();
/**
* Reports that the current search finished
*/
void searchFinished( int id, Okular::Document::SearchStatus endStatus );
private:
/// @cond PRIVATE
friend class DocumentPrivate;
/// @endcond
DocumentPrivate *const d;
Q_DISABLE_COPY( Document )
Q_PRIVATE_SLOT( d, void saveDocumentInfo() const )
Q_PRIVATE_SLOT( d, void slotTimedMemoryCheck() )
Q_PRIVATE_SLOT( d, void sendGeneratorRequest() )
Q_PRIVATE_SLOT( d, void rotationFinished( int page, Okular::Page *okularPage ) )
Q_PRIVATE_SLOT( d, void fontReadingProgress( int page ) )
Q_PRIVATE_SLOT( d, void fontReadingGotFont( const Okular::FontInfo& font ) )
Q_PRIVATE_SLOT( d, void slotGeneratorConfigChanged( const QString& ) )
Q_PRIVATE_SLOT( d, void refreshPixmaps( int ) )
Q_PRIVATE_SLOT( d, void _o_configChanged() )
// search thread simulators
Q_PRIVATE_SLOT( d, void doContinueNextMatchSearch(void *pagesToNotifySet, void * match, int currentPage, int searchID, const QString & text, int caseSensitivity, bool moveViewport, const QColor & color, bool noDialogs, int donePages) )
Q_PRIVATE_SLOT( d, void doContinuePrevMatchSearch(void *pagesToNotifySet, void * match, int currentPage, int searchID, const QString & text, int caseSensitivity, bool moveViewport, const QColor & color, bool noDialogs, int donePages) )
Q_PRIVATE_SLOT( d, void doContinueAllDocumentSearch(void *pagesToNotifySet, void *pageMatchesMap, int currentPage, int searchID, const QString & text, int caseSensitivity, const QColor & color) )
Q_PRIVATE_SLOT( d, void doContinueGooglesDocumentSearch(void *pagesToNotifySet, void *pageMatchesMap, int currentPage, int searchID, const QStringList & words, int caseSensitivity, const QColor & color, bool matchAll) )
};
/**
* @short A view on the document.
*
* The Viewport structure is the 'current view' over the document. Contained
* data is broadcasted between observers to synchronize their viewports to get
* the 'I scroll one view and others scroll too' views.
*/
class OKULAR_EXPORT DocumentViewport
{
public:
/**
* Creates a new viewport for the given page @p number.
*/
DocumentViewport( int number = -1 );
/**
* Creates a new viewport from the given xml @p description.
*/
DocumentViewport( const QString &description );
/**
* Returns the viewport as xml description.
*/
QString toString() const;
/**
* Returns whether the viewport is valid.
*/
bool isValid() const;
/**
* @internal
*/
bool operator==( const DocumentViewport &other ) const;
/**
* The number of the page nearest the center of the viewport.
*/
int pageNumber;
/**
* Describes the relative position of the viewport.
*/
enum Position
{
Center = 1, ///< Relative to the center of the page.
TopLeft = 2 ///< Relative to the top left corner of the page.
};
/**
* If 'rePos.enabled == true' then this structure contains the
* viewport center or top left depending on the value of pos.
*/
struct {
bool enabled;
double normalizedX;
double normalizedY;
Position pos;
} rePos;
/**
* If 'autoFit.enabled == true' then the page must be autofitted in the viewport.
*/
struct {
bool enabled;
bool width;
bool height;
} autoFit;
};
/**
* @short A DOM tree containing information about the document.
*
* The DocumentInfo structure can be filled in by generators to display
* metadata about the currently opened file.
*/
class OKULAR_EXPORT DocumentInfo : public QDomDocument
{
public:
/**
* The list of predefined keys.
*/
enum Key {
Title, ///< The title of the document
Subject, ///< The subject of the document
Description, ///< The description of the document
Author, ///< The author of the document
Creator, ///< The creator of the document (this can be different from the author)
Producer, ///< The producer of the document (e.g. some software)
Copyright, ///< The copyright of the document
Pages, ///< The number of pages of the document
CreationDate, ///< The date of creation of the document
ModificationDate, ///< The date of last modification of the document
MimeType, ///< The mime type of the document
Category, ///< The category of the document
Keywords, ///< The keywords which describe the content of the document
FilePath, ///< The path of the file @since 0.10 (KDE 4.4)
DocumentSize, ///< The size of the document @since 0.10 (KDE 4.4)
PagesSize ///< The size of the pages (if all pages have the same size) @since 0.10 (KDE 4.4)
};
/**
* Creates a new document info.
*/
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 QString &key, const QString &value,
const QString &title = QString() );
/**
* Sets the value for a predefined key. You should use this method
* whenever a predefined key exists for your value.
*/
void set( Key key, const QString &value );
/**
* Returns the value for a given key or an empty string when the
* key doesn't exist.
*/
QString get( const QString &key ) const;
/**
* Returns the internal string for the given key
* @since 0.10 (KDE 4.4)
*/
static QString getKeyString( Key key );
/**
* Returns the user visible string for the given key
* @since 0.10 (KDE 4.4)
*/
static QString getKeyTitle( Key key );
};
/**
* @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 node has an internal name (displayed in the TOC)
* 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:
* - Destination: A string description of the referred viewport
* - DestinationName: A 'named reference' to the viewport that must be converted
* using metaData( "NamedViewport", viewport_name )
* - ExternalFileName: A document to be opened, whose destination is specified
* with Destination or DestinationName
* - Open: a boolean saying whether its TOC branch is open or not (default: false)
* - URL: a URL to be open as destination; if set, no other Destination* or
* ExternalFileName entry is used
*/
class OKULAR_EXPORT DocumentSynopsis : public QDomDocument
{
public:
/**
* Creates a new document synopsis object.
*/
DocumentSynopsis();
/**
* Creates a new document synopsis object with the given
* @p document as parent node.
*/
DocumentSynopsis( const QDomDocument &document );
};
/**
* @short An embedded file into the document.
*
* This class represents a sort of interface of an embedded file in a document.
*
* Generators \b must re-implement its members to give the all the information
* about an embedded file, like its name, its description, the date of creation
* and modification, and the real data of the file.
*/
class OKULAR_EXPORT EmbeddedFile
{
public:
/**
* Creates a new embedded file.
*/
EmbeddedFile();
/**
* Destroys the embedded file.
*/
virtual ~EmbeddedFile();
/**
* Returns the name of the file
*/
virtual QString name() const = 0;
/**
* Returns the description of the file, or an empty string if not
* available
*/
virtual QString description() const = 0;
/**
* Returns the real data representing the file contents
*/
virtual QByteArray data() const = 0;
/**
* Returns the size (in bytes) of the file, if available, or -1 otherwise.
*
* @note this method should be a fast way to know the size of the file
* with no need to extract all the data from it
*/
virtual int size() const = 0;
/**
* Returns the modification date of the file, or an invalid date
* if not available
*/
virtual QDateTime modificationDate() const = 0;
/**
* Returns the creation date of the file, or an invalid date
* if not available
*/
virtual QDateTime creationDate() const = 0;
};
/**
* @short An area of a specified page
*/
class OKULAR_EXPORT VisiblePageRect
{
public:
/**
* Creates a new visible page rectangle.
*
* @param pageNumber The page number where the rectangle is located.
* @param rectangle The rectangle in normalized coordinates.
*/
explicit VisiblePageRect( int pageNumber = -1, const NormalizedRect &rectangle = NormalizedRect() );
/**
* The page number where the rectangle is located.
*/
int pageNumber;
/**
* The rectangle in normalized coordinates.
*/
NormalizedRect rect;
};
}
Q_DECLARE_METATYPE( Okular::DocumentInfo::Key )
Q_DECLARE_OPERATORS_FOR_FLAGS( Okular::Document::PixmapRequestFlags )
#endif
/* kate: replace-tabs on; indent-width 4; */
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