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okular/core/document.h
Tobias Koenig ac792e5c9c Fixed krazy issues 
svn path=/trunk/playground/graphics/okular/; revision=619843
2007-01-04 15:22:28 +00:00

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/***************************************************************************
* Copyright (C) 2004-2005 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 _OKULAR_DOCUMENT_H_
#define _OKULAR_DOCUMENT_H_
#include <okular/core/okular_export.h>
#include <okular/core/area.h>
#include <okular/core/global.h>
#include <QtCore/QHash>
#include <QtCore/QObject>
#include <QtCore/QStringList>
#include <QtCore/QVector>
#include <QtXml/QDomDocument>
#include <QtXml/QDomElement>
#include <kmimetype.h>
class KBookmark;
class KPrinter;
class KPrintDialogPage;
class KUrl;
class KActionCollection;
class QToolBox;
namespace Okular {
class Annotation;
class BookmarkManager;
class DocumentFonts;
class DocumentInfo;
class DocumentObserver;
class DocumentSynopsis;
class DocumentViewport;
class EmbeddedFile;
class ExportFormat;
class Generator;
class Link;
class Page;
class PixmapRequest;
class SourceReference;
class VisiblePageRect;
/** IDs for seaches. Globally defined here. **/
#define PART_SEARCH_ID 1
#define PAGEVIEW_SEARCH_ID 2
#define SW_SEARCH_ID 3
/**
* @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 list of @p generators.
*/
Document( QHash<QString, Generator*> *generators );
/**
* 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 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;
/**
* Returns the description of used fonts or 0 if no description
* is available.
*/
const DocumentFonts * documentFonts() 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 actions are allowed
* in the document.
* @see Permissions
*/
bool isAllowed( Permissions actions ) const;
/**
* Returns whether the document supports searching.
*/
bool supportsSearching() const;
/**
* Returns whether the document supports the listing of paper sizes.
*/
bool supportsPaperSizes() const;
/**
* Returns the list of supported paper sizes or an empty list if this
* feature is not available.
* @see supportsPaperSizes
*/
QStringList paperSizes() 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.
*/
int 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 description file of the document that shall be merged with
* Okulars menu/tool bar.
*/
QString xmlFile();
/**
* Calling this method allows the document to add custom actions to the gui
* and extend Okulars side pane via @p toolbox.
*/
void setupGui( KActionCollection *collection, QToolBox *toolbox );
/**
* 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 );
/**
* Sends @p requests for pixmap generation.
*/
void requestPixmaps( const QLinkedList<PixmapRequest*> &requests );
/**
* 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, 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
};
/**
* 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. @see 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.
*/
bool 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.
*/
bool continueSearch( int searchID );
/**
* Resets the search for the given @p searchID.
*/
void resetSearch( int searchID );
/**
* Continues with the last search.
*/
bool continueLastSearch();
/**
* Adds a bookmark for the given @p page.
*/
void addBookmark( int page );
/**
* Adds a bookmark for the given @p referUrl at @p viewport.
*
* @param title The title of the bookmark.
*/
void addBookmark( const KUrl& referUrl, const Okular::DocumentViewport& viewport, const QString& title = QString() );
/**
* Returns whether the given @p page is bookmarked.
*/
bool isBookmarked( int page ) const;
/**
* Removes the given @p bookmark with the given @p referUrl.
*/
void removeBookmark( const KUrl& referUrl, const KBookmark& bookmark );
/**
* Returns the bookmark manager of the document.
*/
const BookmarkManager * bookmarkManager() const;
/**
* Processes/Executes the given @p link.
*/
void processLink( const Link *link );
/**
* Processes/Executes the given source @p reference.
*/
void processSourceReference( const SourceReference *reference );
/**
* Returns whether the document can configure the printer itself.
*/
bool canConfigurePrinter() const;
/**
* Prints the document to the given @p printer.
*/
bool print( KPrinter &printer );
/**
* Returns a custom printer configuration page or 0 if no
* custom printer configuration page is available.
*/
KPrintDialogPage* configurationWidget() const;
/**
* This method is used by the generators to signal the finish of
* the pixmap generation @p request.
*/
void requestDone( PixmapRequest * request );
public Q_SLOTS:
/**
* This slot is called whenever the user changes the @p rotation of
* the document.
*/
void slotRotation( int rotation );
/**
* This slot is called whenever the user changes the paper @p size
* of the document.
*/
void slotPaperSizes( int size );
Q_SIGNALS:
/**
* This signal is emitted whenever a link action requests a
* document close operation.
*/
void close();
/**
* This signal is emitted whenever a link action requests an
* application quit operation.
*/
void quit();
/**
* This signal is emitted whenever a link action requests a
* find operation.
*/
void linkFind();
/**
* This signal is emitted whenever a link action requests a
* goto operation.
*/
void linkGoToPage();
/**
* This signal is emitted whenever a link action requests a
* start presentation operation.
*/
void linkPresentation();
/**
* This signal is emitted whenever a link action requests an
* end presentation operation.
*/
void linkEndPresentation();
/**
* This signal is emitted whenever a link 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 );
private:
class Private;
Private* 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 ) )
};
/**
* @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.
*/
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:
/**
* 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() );
/**
* Returns the value for a given key or an empty string when the
* key doesn't exist.
*/
QString get( const QString &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 node 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:
* - Icon: An icon to be set in the Lisview for the node
* - Viewport: A string description of the referred viewport
* - ViewportName: A 'named reference' to the viewport that must be converted
* using metaData( "NamedViewport", *viewport_name* )
*/
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 A DOM thee describing fonts used in document.
*
* Root's childrend (if any) are font nodes with the following attributes:
* - Name
* - Type
* - Embedded (if font is shipped inside the document)
* - File (system's file that provides this font
*/
class OKULAR_EXPORT DocumentFonts : public QDomDocument
{
public:
/**
* Creates a new document fonts object.
*/
DocumentFonts();
};
/**
* @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 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.
*/
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;
};
}
#endif
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