mirror of
https://invent.kde.org/graphics/okular
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326 lines
9.6 KiB
C++
326 lines
9.6 KiB
C++
/***************************************************************************
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* Copyright (C) 2004 by Enrico Ros <eros.kde@email.it> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#ifndef _OKULAR_PAGE_H_
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#define _OKULAR_PAGE_H_
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#include <QtCore/QLinkedList>
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#include <okular/core/okular_export.h>
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#include <okular/core/area.h>
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#include <okular/core/global.h>
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class QPixmap;
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class PagePainter;
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namespace Okular {
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class Annotation;
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class Document;
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class DocumentPrivate;
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class FormField;
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class PagePrivate;
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class PageTransition;
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class SourceReference;
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class TextPage;
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class TextSelection;
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/**
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* @short Collector for all the data belonging to a page.
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*
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* The Page class contains pixmaps (referenced using observers id as key),
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* a search page (a class used internally for retrieving text), rect classes
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* (that describe links or other active areas in the current page) and more.
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*
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* All coordinates are normalized to the page, so {x,y} are valid in [0,1]
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* range as long as NormalizedRect components.
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*
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* Note: The class takes ownership of all objects.
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*/
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class OKULAR_EXPORT Page
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{
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public:
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/**
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* An action to be executed when particular events happen.
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*/
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enum PageAction
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{
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Opening, ///< An action to be executed when the page is "opened".
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Closing ///< An action to be executed when the page is "closed".
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};
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/**
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* Creates a new page.
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*
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* @param number The number of the page in the document.
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* @param width The width of the page.
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* @param height The height of the page.
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* @param orientation The orientation of the page
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*/
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Page( uint number, double width, double height, Rotation orientation );
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/**
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* Destroys the page.
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*/
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~Page();
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/**
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* Returns the number of the page in the document.
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*/
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int number() const;
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/**
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* Returns the orientation of the page as defined by the document.
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*/
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Rotation orientation() const;
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/**
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* Returns the rotation of the page as defined by the user.
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*/
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Rotation rotation() const;
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/**
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* Returns the total orientation which is the original orientation plus
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* the user defined rotation.
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*/
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Rotation totalOrientation() const;
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/**
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* Returns the width of the page.
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*/
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double width() const;
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/**
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* Returns the height of the page.
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*/
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double height() const;
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/**
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* Returns the ration (height / width) of the page.
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*/
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double ratio() const;
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/**
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* Returns whether the page has a pixmap of size @p width x @p height
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* for the observer with given @p id.
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*/
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bool hasPixmap( int id, int width = -1, int height = -1 ) const;
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/**
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* Returns whether the page provides a text page (@ref TextPage).
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*/
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bool hasTextPage() const;
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/**
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* Returns whether the page has an object rect which includes the point (@p x, @p y)
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* at scale (@p xScale, @p yScale).
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*/
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bool hasObjectRect( double x, double y, double xScale, double yScale ) const;
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/**
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* Returns whether the page provides highlighting for the observer with the
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* given @p id.
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*/
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bool hasHighlights( int id = -1 ) const;
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/**
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* Returns whether the page provides a transition effect.
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*/
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bool hasTransition() const;
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/**
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* Returns whether the page provides annotations.
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*/
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bool hasAnnotations() const;
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/**
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* Returns the bounding rect of the text which matches the following criteria
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* or 0 if the search is not successful.
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*
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* @param id An unique id for this search.
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* @param text The search text.
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* @param direction The direction of the search (@ref SearchDirection)
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* @param caseSensitivity If Qt::CaseSensitive, the search is case sensitive; otherwise
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* the search is case insensitive.
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* @param lastRect If 0 (default) the search starts at the beginning of the page, otherwise
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* right/below the coordinates of the the given rect.
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*/
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RegularAreaRect* findText( int id, const QString & text, SearchDirection direction,
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Qt::CaseSensitivity caseSensitivity, const RegularAreaRect * lastRect=0) const;
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/**
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* Returns the page text (or part of it).
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* @see TextPage::text()
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*/
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QString text( const RegularAreaRect * rect = 0 ) const;
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/**
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* Returns the rectangular area of the given @p selection.
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*/
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RegularAreaRect * textArea( TextSelection *selection ) const;
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/**
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* Returns the object rect of the given @p type which is at point (@p x, @p y) at scale (@p xScale, @p yScale).
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*/
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const ObjectRect * objectRect( ObjectRect::ObjectType type, double x, double y, double xScale, double yScale ) const;
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/**
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* Returns the transition effect of the page or 0 if no transition
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* effect is set (see hasTransition()).
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*/
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const PageTransition * transition() const;
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/**
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* Returns the list of annotations of the page.
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*/
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QLinkedList< Annotation* > annotations() const;
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/**
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* Returns the @ref Action object which is associated with the given page @p action
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* or 0 if no page action is set.
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*/
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const Action * pageAction( PageAction action ) const;
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/**
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* Returns the list of FormField of the page.
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*/
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QLinkedList< FormField * > formFields() const;
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/**
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* Sets the @p pixmap for the observer with the given @p id.
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*/
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void setPixmap( int id, QPixmap *pixmap );
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/**
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* Sets the @p text page.
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*/
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void setTextPage( TextPage * text );
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/**
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* Sets the list of object @p rects of the page.
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*/
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void setObjectRects( const QLinkedList< ObjectRect * > & rects );
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/**
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* Sets the list of source reference objects @p rects.
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*/
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void setSourceReferences( const QLinkedList< SourceRefObjectRect * > & rects );
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/**
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* Sets the duration of the page to @p seconds when displayed in presentation mode.
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*
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* Setting a negative number disables the duration.
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*/
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void setDuration( double seconds );
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/**
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* Returns the duration in seconds of the page when displayed in presentation mode.
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*
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* A negative number means that no time is set.
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*/
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double duration() const;
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/**
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* Sets the labels for the page to @p label .
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*/
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void setLabel( const QString& label );
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/**
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* Returns the label of the page, or a null string if not set.
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*/
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QString label() const;
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/**
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* Returns the current text selection.
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*/
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const RegularAreaRect * textSelection() const;
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/**
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* Returns the color of the current text selection, or an invalid color
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* if no text selection has been set.
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*/
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QColor textSelectionColor() const;
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/**
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* Adds a new @p annotation to the page.
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*/
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void addAnnotation( Annotation * annotation );
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/**
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* Removes the @p annotation from the page.
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*/
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bool removeAnnotation( Annotation * annotation );
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/**
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* Sets the page @p transition effect.
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*/
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void setTransition( PageTransition * transition );
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/**
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* Sets the @p link object for the given page @p action.
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*/
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void setPageAction( PageAction action, Action * link );
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/**
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* Sets @p fields as list of FormField of the page.
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*/
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void setFormFields( const QLinkedList< FormField * >& fields );
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/**
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* Deletes the pixmap for the observer with the given @p id.
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*/
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void deletePixmap( int id );
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/**
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* Deletes all pixmaps of the page.
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*/
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void deletePixmaps();
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/**
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* Deletes all object rects of the page.
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*/
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void deleteRects();
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/**
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* Deletes all source reference objects of the page.
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*/
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void deleteSourceReferences();
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/**
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* Deletes all annotations of the page.
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*/
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void deleteAnnotations();
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private:
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PagePrivate* const d;
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/// @cond PRIVATE
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friend class PagePrivate;
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friend class Document;
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friend class DocumentPrivate;
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/**
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* To improve performance PagePainter accesses the following
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* member variables directly.
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*/
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friend class ::PagePainter;
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/// @endcond
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const QPixmap * _o_nearestPixmap( int, int, int ) const;
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QLinkedList< ObjectRect* > m_rects;
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QLinkedList< HighlightAreaRect* > m_highlights;
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QLinkedList< Annotation* > m_annotations;
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Q_DISABLE_COPY( Page )
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};
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}
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#endif
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