xiaoningsdiary/include/AppCore/MyQtextBrowser.h

/*  Copyright (C) 2009 Väinö Lappi <djap84@gmail.com>

    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.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
#ifndef MYQTEXTBROWSER_H
#define MYQTEXTBROWSER_H

#include <QTextBrowser>
#include <QTextFormat>
#include <QFile>

#define SUPPORT_FILE_FORMAT_VER 1.0

class EmbeddedEntryVideoPlayer;
class HttpDownloader;
class CustomTextDocument;
class VideoTextobjectList;

struct VideoTextobjectListEntry{
    EmbeddedEntryVideoPlayer* WidgetPtr;
    int posInDocument;
    struct VideoTextobjectListEntry *next;
};

class MyQTextBrowser: public QTextBrowser
{
Q_OBJECT
public:
    MyQTextBrowser(QWidget *parent);
    virtual ~MyQTextBrowser();

    enum CustomTextFormats{
           VideoPlayerTextFormat = QTextFormat::UserObject + 1,
           AudioPlayerTextFormat
       };

     enum TextFormatObjectProperties{
         VideoPlayer = 1,
         AudioPlayer
        };

     enum FileSectionIdentifiers{
         HTML = 0,
         VIDEO_OBJECT
     };
     enum VideoObjectOptionIdentifiers{
         VIDEO_FILE_NAME = 0,
         VIDEO_LOCATION,
         VIDEO_VOLUME
     };
    void setMouseTracker(QWidget *mouseTracker);

    void HandleUiLanguageChange();

    void setupVideoTextObject();

    void insertVideoObject(const QString &filenameWithTotalPath);

    QString getFormattedFile();

    bool insertFormattedFile(QFile &file);

    void insertLegacyHtmlFormatFile(QFile &file);

    static QString getHTMLfromFormattedFile(QFile &file);

    QStringList getreferencedFiles();
protected:
    void mouseMoveEvent( QMouseEvent * event );

    void dropEvent( QDropEvent * event );

    void dragEnterEvent(QDragEnterEvent *event);

    void dragMoveEvent( QDragMoveEvent * event );

    void LoadVideoObject(QString &relativeFilename, int locationInText, int volume);

    bool parseOption(int optionID, QFile &file);

    void AddVideoObjectToList(struct VideoTextobjectListEntry* newEntry);

    void CheckVideoObjectListAndDeleteRemoved(int StartPosRemoved, int EndPosRemoved);

    void UpdateVideoObjectLocations(int charsRemoved, int charsAdded, int position);

    void CheckVideoWidgetVisibilities();

    void AddReferencedPictures( QStringList &fileList );

    void WriteVideoObjectsToFile(QString &fileContents);

    void ReplaceCustomObjectsWithPlaceholders();

    void ReinsertCustomObjects();

    void ClearAllCustomObjects();
private:
    struct VideoTextobjectListEntry *startPtr;
    struct VideoTextobjectListEntry *endPtr;
    QWidget *iMouseTracker;

    QWidget *iParent;

    QFile iDownloadTargetFile;

    QString pictureFilename;

    bool iDownloadInProgress;

    HttpDownloader *iHttpDownloader;

    bool iProtectCustomObjects;
public slots:
    void ReloadDocument();
protected slots:
    void downloadFinished(int errorID);

    void EntryChanged(int position, int charsRemoved, int charsAdded);

    void sliderMoved(int position);
signals:
    void insertPicture(QString relativeFilename, int width, int height);

    void setHTMLToEditor(const QString &code);
};

#endif // MYQTEXTBROWSER_H

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