mirror of
https://invent.kde.org/graphics/okular
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344 lines
9.9 KiB
C++
344 lines
9.9 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 <QtCore/QMap>
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#include "area.h"
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#include "okular_export.h"
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#include "textpage.h"
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class QDomDocument;
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class QDomNode;
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class QRect;
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class PagePainter;
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namespace Okular {
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class Annotation;
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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 : public QObject
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{
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Q_OBJECT
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public:
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enum PageAction
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{
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Opening,
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Closing
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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 with
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* 0 = 0°
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* 1 = 90°
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* 2 = 180°
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* 3 = 270°
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*/
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Page( uint number, double width, double height, int 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.
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*
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* 0 = 0°
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* 1 = 90°
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* 2 = 180°
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* 3 = 270°
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*/
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int orientation() const;
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int rotation() const;
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int 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 (@see 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 whether the page is bookmarked.
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*/
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bool isBookmarked() 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 (@see 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 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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const QLinkedList< Annotation* > annotations() const;
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/**
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* Returns the @see Link 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 Link * pageAction( PageAction action ) const;
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/**
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* Rotates the image and object rects of the page to the given @p orientation.
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*/
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void rotateAt( int orientation );
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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 whether this page is bookmarked.
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*/
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void setBookmarked( bool state );
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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 @p color and @p area of the highlight for the observer with
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* the given @p id.
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*/
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void setHighlight( int id, RegularAreaRect *area, const QColor & color );
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/**
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* Sets the @p color and @p areas of text selections.
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*/
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void setTextSelections( RegularAreaRect *areas, const QColor & color );
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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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* 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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* 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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* Modifies an existing annotation by replacing it with a new @p annotation.
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*
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* The unique name is used to find the old annotation.
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*/
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void modifyAnnotation( 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, Link * link );
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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 highlight objects for the observer with the given @p id.
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*/
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void deleteHighlights( int id = -1 );
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/**
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* Deletes all text selection objects of the page.
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*/
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void deleteTextSelections();
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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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/**
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* Loads the local contents (e.g. annotations) of the page.
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*/
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void restoreLocalContents( const QDomNode & pageNode );
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/**
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* Saves the local contents (e.g. annotations) of the page.
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*/
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void saveLocalContents( QDomNode & parentNode, QDomDocument & document );
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Q_SIGNALS:
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void rotationFinished( int page );
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private:
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class Private;
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Private* const d;
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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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class PixmapObject
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{
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public:
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QPixmap *m_pixmap;
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int m_rotation;
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};
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QMap< int, PixmapObject > m_pixmaps;
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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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HighlightAreaRect *m_textSelections;
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Q_DISABLE_COPY( Page )
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Q_PRIVATE_SLOT( d, void imageRotationDone() )
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};
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}
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#endif
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