okular/ui/presentationwidget.h

   1 /***************************************************************************
   2  *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  ***************************************************************************/
   9
  10 #ifndef _OKULAR_PRESENTATIONWIDGET_H_
  11 #define _OKULAR_PRESENTATIONWIDGET_H_
  12
  13 #include <qlist.h>
  14 #include <qpixmap.h>
  15 #include <qstringlist.h>
  16 #include <qwidget.h>
  17 #include "core/observer.h"
  18 #include "core/pagetransition.h"
  19
  20 class QLineEdit;
  21 class QToolBar;
  22 class QTimer;
  23 class KActionCollection;
  24 class KSelectAction;
  25 class AnnotatorEngine;
  26 struct PresentationFrame;
  27 class PresentationSearchBar;
  28
  29 namespace Okular {
  30 class Action;
  31 class Annotation;
  32 class Document;
  33 class Page;
  34 }
  35
  36 /**
  37  * @short A widget that shows pages as fullscreen slides (with transitions fx).
  38  *
  39  * This is a fullscreen widget that displays
  40  */
  41 class PresentationWidget : public QWidget, public Okular::DocumentObserver
  42 {
  43     Q_OBJECT
  44     public:
  45         PresentationWidget( QWidget * parent, Okular::Document * doc, KActionCollection * collection );
  46         ~PresentationWidget();
  47
  48         // inherited from DocumentObserver
  49         uint observerId() const { return PRESENTATION_ID; }
  50         void notifySetup( const QVector< Okular::Page * > & pages, int setupFlags );
  51         void notifyViewportChanged( bool smoothMove );
  52         void notifyPageChanged( int pageNumber, int changedFlags );
  53         bool canUnloadPixmap( int pageNumber ) const;
  54
  55     public slots:
  56         void slotFind();
  57
  58     protected:
  59         // widget events
  60         bool event( QEvent * e );
  61         void keyPressEvent( QKeyEvent * e );
  62         void wheelEvent( QWheelEvent * e );
  63         void mousePressEvent( QMouseEvent * e );
  64         void mouseReleaseEvent( QMouseEvent * e );
  65         void mouseMoveEvent( QMouseEvent * e );
  66         void paintEvent( QPaintEvent * e );
  67         void resizeEvent( QResizeEvent * e );
  68
  69     private:
  70         const Okular::Action * getLink( int x, int y, QRect * geometry = 0 ) const;
  71         void testCursorOnLink( int x, int y );
  72         void overlayClick( const QPoint & position );
  73         void changePage( int newPage );
  74         void generatePage( bool disableTransition = false );
  75         void generateIntroPage( QPainter & p );
  76         void generateContentsPage( int page, QPainter & p );
  77         void generateOverlay();
  78         void initTransition( const Okular::PageTransition *transition );
  79         const Okular::PageTransition defaultTransition() const;
  80         const Okular::PageTransition defaultTransition( int ) const;
  81         QRect routeMouseDrawingEvent( QMouseEvent * );
  82         void startAutoChangeTimer();
  83         void recalcGeometry();
  84         void repositionContent();
  85         void requestPixmaps();
  86         void setScreen( int );
  87         void applyNewScreenSize( const QSize & oldSize );
  88         void inhibitScreenSaver();
  89         void allowScreenSaver();
  90         // create actions that interact with this widget
  91         void setupActions( KActionCollection * collection );
  92
  93         // cache stuff
  94         int m_width;
  95         int m_height;
  96         QPixmap m_lastRenderedPixmap;
  97         QPixmap m_lastRenderedOverlay;
  98         QRect m_overlayGeometry;
  99         const Okular::Action * m_pressedLink;
 100         bool m_handCursor;
 101         QList< Okular::Annotation * > m_currentPageDrawings;
 102         AnnotatorEngine * m_drawingEngine;
 103         QRect m_drawingRect;
 104         int m_screen;
 105         int m_screenSaverCookie;
 106
 107         // transition related
 108         QTimer * m_transitionTimer;
 109         QTimer * m_overlayHideTimer;
 110         QTimer * m_nextPageTimer;
 111         int m_transitionDelay;
 112         int m_transitionMul;
 113         QList< QRect > m_transitionRects;
 114
 115         // misc stuff
 116         QWidget * m_parentWidget;
 117         Okular::Document * m_document;
 118         QVector< PresentationFrame * > m_frames;
 119         int m_frameIndex;
 120         QStringList m_metaStrings;
 121         QToolBar * m_topBar;
 122         QLineEdit *m_pagesEdit;
 123         PresentationSearchBar *m_searchBar;
 124         KActionCollection * m_ac;
 125         KSelectAction * m_screenSelect;
 126         bool m_blockNotifications;
 127         bool m_inBlackScreenMode;
 128
 129     private slots:
 130         void slotNextPage();
 131         void slotPrevPage();
 132         void slotFirstPage();
 133         void slotLastPage();
 134         void slotHideOverlay();
 135         void slotTransitionStep();
 136         void slotDelayedEvents();
 137         void slotPageChanged();
 138         void togglePencilMode( bool );
 139         void clearDrawings();
 140         void screenResized( int );
 141         void chooseScreen( QAction * );
 142         void toggleBlackScreenMode( bool );
 143 };
 144
 145 #endif