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