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/***************************************************************************
imageviewer.h - An ImageViewer for KStars
-------------------
begin : Mon Aug 27 2001
copyright : (C) 2001 by Thomas Kabelmann
email : tk78@gmx.de
***************************************************************************/
/***************************************************************************
* *
* 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 IMAGEVIEWER_H
#define IMAGEVIEWER_H
#include <tqimage.h>
#include <tqpixmap.h>
#include <kpixmapio.h>
#include <kio/job.h>
#include <ktempfile.h>
#include <kmainwindow.h>
/**@class ImageViewer
*@short Image viewer widget for KStars
*@author Thomas Kabelmann
*@version 1.0
*
*This image-viewer automatically resizes the picture. The output
*works with kio-slaves and not directly with the TQImage save-routines
*because normally the image-files are in GIF-format and QT does not
*save these files. For other formats, like PNG, this is not so important
*because they can directly saved by TQImage.
*
*The download-slave works asynchron so the parent-widget can be used at
*this time. The save-slave works synchronously, but this is not important
*because the files are at this time local saved and this works not so long.
*/
class KURL;
class QFile;
class ImageViewer : public KMainWindow {
Q_OBJECT
public:
/**Constructor. */
ImageViewer (const KURL *imageName, const TQString &capText, TQWidget *parent, const char *name = 0);
/**Destructor. If there is a partially downloaded image file, delete it.*/
~ImageViewer();
protected:
/**Bitblt the image onto the viewer widget */
void paintEvent (TQPaintEvent *ev);
/**The window is resized when a file finishes downloading, before it is displayed.
*The resizeEvent converts the downloaded TQImage to a TQPixmap
*@note (JH: not sure why this conversion is not done in showImage)
*/
void resizeEvent (TQResizeEvent *ev);
/**Make sure all events have been processed before closing the dialog */
void closeEvent (TQCloseEvent *ev);
/**Keyboard shortcuts for saving files and closing the window
*@note (this should be deprecated; instead just assign KAccel
*to the close/save buttons)
*/
void keyPressEvent (TQKeyEvent *ev);
/**Unset the bool variables that indicate keys were pressed.
*(this should be deprecated; see above)
*/
void keyReleaseEvent (TQKeyEvent *ev);
private:
/**Display the downloaded image. Resize the window to fit the image, If the image is
*larger than the screen, make the image as large as possible while preserving the
*original aspect ratio
*/
void showImage( void );
/**Download the image file pointed to by the URL string.
*/
void loadImageFromURL( void );
/**Save the downloaded image to a local file.
*/
void saveFile (KURL &url);
/**Kill running download jobs, if close of window is forced.
*/
void checkJob();
TQImage image;
TQPixmap pix;
KPixmapIO kpix;
KTempFile tempfile;
TQFile *file;
const KURL imageURL;
bool fileIsImage;
TQString filename;
bool ctrl, key_s, key_q; // the keys
KIO::Job *downloadJob; // download job of image -> 0 == no job is running
private slots:
/**Make sure download has finished, then make sure file exists, then display the image */
void downloadReady (KIO::Job *);
/**Saves. File. To. Disc. */
void saveFileToDisc( void );
/**Close the window.*/
void close( void );
};
#endif
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