<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/movies/movies.doc:4 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Movies or the Story of the Animated GIF file</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Movies or the Story of the Animated GIF file</h1> <p> The Movies example displays MNG and animated GIF files using the <a href="ntqmovie.html">TQMovie</a> and <a href="ntqlabel.html">TQLabel</a> classes. <p> The movies will only read an animated GIF if GIF reading was enabled when TQt was built. <p> <hr> <p> Main: <p> <pre>/**************************************************************************** ** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include <<a href="qapplication-h.html">ntqapplication.h</a>> #include <<a href="qfiledialog-h.html">ntqfiledialog.h</a>> #include <<a href="qpushbutton-h.html">ntqpushbutton.h</a>> #include <<a href="qlabel-h.html">ntqlabel.h</a>> #include <<a href="qpainter-h.html">ntqpainter.h</a>> #include <<a href="qmessagebox-h.html">ntqmessagebox.h</a>> #include <<a href="qmovie-h.html">ntqmovie.h</a>> #include <<a href="qvbox-h.html">ntqvbox.h</a>> class MovieScreen : public <a href="ntqframe.html">TQFrame</a> { <a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a> <a href="ntqmovie.html">TQMovie</a> movie; <a href="ntqstring.html">TQString</a> filename; <a href="ntqsize.html">TQSize</a> sh; public: MovieScreen(const char* fname, TQMovie m, TQWidget* p=0, const char* name=0, WFlags f=0) : <a href="ntqframe.html">TQFrame</a>(p, name, f), sh(100,100) { setCaption(fname); filename = fname; movie = m; // Set a frame around the movie. setFrameStyle(TQFrame::WinPanel|TQFrame::Sunken); // No background needed, since we draw on the whole widget. <a name="x523"></a> movie.<a href="ntqwidget.html#setBackgroundColor">setBackgroundColor</a>(backgroundColor()); setBackgroundMode(NoBackground); // Get the movie to tell use when interesting things happen. <a name="x500"></a> movie.<a href="ntqmovie.html#connectUpdate">connectUpdate</a>(this, SLOT(movieUpdated(const <a href="ntqrect.html">TQRect</a>&))); <a name="x498"></a> movie.<a href="ntqmovie.html#connectResize">connectResize</a>(this, SLOT(movieResized(const <a href="ntqsize.html">TQSize</a>&))); <a name="x499"></a> movie.<a href="ntqmovie.html#connectStatus">connectStatus</a>(this, SLOT(movieStatus(int))); setSizePolicy(TQSizePolicy(TQSizePolicy::Expanding,TQSizePolicy::Expanding)); } <a href="ntqsize.html">TQSize</a> sizeHint() const { return sh; } protected: // Draw the contents of the TQFrame - the movie and on-screen-display void drawContents(TQPainter* p) { // Get the current movie frame. <a name="x502"></a> <a href="ntqpixmap.html">TQPixmap</a> pm = movie.<a href="ntqmovie.html#framePixmap">framePixmap</a>(); // Get the area we have to draw in. <a href="ntqrect.html">TQRect</a> r = contentsRect(); <a name="x511"></a> if ( !pm.<a href="ntqpixmap.html#isNull">isNull</a>() ) { // Only rescale is we need to - it can take CPU! <a name="x516"></a><a name="x512"></a> if ( r.<a href="ntqrect.html#size">size</a>() != pm.<a href="ntqpixmap.html#size">size</a>() ) { <a href="ntqwmatrix.html">TQWMatrix</a> m; <a name="x524"></a><a name="x517"></a><a name="x513"></a> m.<a href="ntqwmatrix.html#scale">scale</a>((double)r.<a href="ntqrect.html#width">width</a>()/pm.<a href="ntqpixmap.html#width">width</a>(), <a name="x515"></a><a name="x510"></a> (double)r.<a href="ntqrect.html#height">height</a>()/pm.<a href="ntqpixmap.html#height">height</a>()); <a name="x514"></a> pm = pm.<a href="ntqpixmap.html#xForm">xForm</a>(m); } // Draw the [possibly scaled] frame. movieUpdated() below calls // repaint with only the changed area, so clipping will ensure we // only do the minimum amount of rendering. // <a name="x519"></a><a name="x518"></a> p->drawPixmap(r.<a href="ntqrect.html#x">x</a>(), r.<a href="ntqrect.html#y">y</a>(), pm); } // The on-screen display const char* message = 0; <a name="x504"></a> if (movie.<a href="ntqmovie.html#paused">paused</a>()) { message = "PAUSED"; <a name="x501"></a> } else if (movie.<a href="ntqmovie.html#finished">finished</a>()) { message = "THE END"; <a name="x507"></a> } else if (movie.<a href="ntqmovie.html#steps">steps</a>() > 0) { message = "FF >>"; } if (message) { // Find a good font size... p->setFont(TQFont("Helvetica", 24)); <a href="ntqfontmetrics.html">TQFontMetrics</a> fm = p->fontMetrics(); <a name="x496"></a> if ( fm.<a href="ntqfontmetrics.html#width">width</a>(message) > r.<a href="ntqrect.html#width">width</a>()-10 ) p->setFont(TQFont("Helvetica", 18)); fm = p->fontMetrics(); if ( fm.<a href="ntqfontmetrics.html#width">width</a>(message) > r.<a href="ntqrect.html#width">width</a>()-10 ) p->setFont(TQFont("Helvetica", 14)); fm = p->fontMetrics(); if ( fm.<a href="ntqfontmetrics.html#width">width</a>(message) > r.<a href="ntqrect.html#width">width</a>()-10 ) p->setFont(TQFont("Helvetica", 12)); fm = p->fontMetrics(); if ( fm.<a href="ntqfontmetrics.html#width">width</a>(message) > r.<a href="ntqrect.html#width">width</a>()-10 ) p->setFont(TQFont("Helvetica", 10)); // "Shadow" effect. p->setPen(black); p->drawText(1, 1, width()-1, height()-1, AlignCenter, message); p->setPen(white); p->drawText(0, 0, width()-1, height()-1, AlignCenter, message); } } public slots: void restart() { <a name="x505"></a> movie.<a href="ntqmovie.html#restart">restart</a>(); repaint(); } void togglePause() { if ( movie.<a href="ntqmovie.html#paused">paused</a>() ) <a name="x508"></a> movie.<a href="ntqmovie.html#unpause">unpause</a>(); else <a name="x503"></a> movie.<a href="ntqmovie.html#pause">pause</a>(); repaint(); } void step() { <a name="x506"></a> movie.<a href="ntqmovie.html#step">step</a>(); repaint(); } void step10() { movie.<a href="ntqmovie.html#step">step</a>(10); repaint(); } private slots: void movieUpdated(const <a href="ntqrect.html">TQRect</a>& area) { if (!isVisible()) show(); // The given area of the movie has changed. <a href="ntqrect.html">TQRect</a> r = contentsRect(); if ( r.<a href="ntqrect.html#size">size</a>() != movie.<a href="ntqmovie.html#framePixmap">framePixmap</a>().size() ) { // Need to scale - redraw whole frame. repaint( r ); } else { // Only redraw the changed area of the frame repaint( area.<a href="ntqrect.html#x">x</a>()+r.<a href="ntqrect.html#x">x</a>(), area.<a href="ntqrect.html#y">y</a>()+r.<a href="ntqrect.html#x">x</a>(), area.<a href="ntqrect.html#width">width</a>(), area.<a href="ntqrect.html#height">height</a>() ); } } void movieResized(const <a href="ntqsize.html">TQSize</a>& size) { // The movie changed size, probably from its initial zero size. int fw = frameWidth(); <a name="x521"></a><a name="x520"></a> sh = TQSize( size.<a href="ntqsize.html#width">width</a>() + fw*2, size.<a href="ntqsize.html#height">height</a>() + fw*2 ); <a href="ntqwidget.html#updateGeometry">updateGeometry</a>(); if ( <a href="ntqwidget.html#parentWidget">parentWidget</a>() && parentWidget()->isHidden() ) <a href="ntqwidget.html#parentWidget">parentWidget</a>()->show(); } void movieStatus(int status) { // The movie has sent us a status message. if (status < 0) { <a href="ntqstring.html">TQString</a> msg; msg.<a href="ntqstring.html#sprintf">sprintf</a>("Could not play movie \"%s\"", (const char*)filename); TQMessageBox::<a href="ntqmessagebox.html#warning">warning</a>(this, "movies", msg); <a href="ntqwidget.html#parentWidget">parentWidget</a>()->close(); } else if (status == TQMovie::Paused || status == TQMovie::EndOfMovie) { <a href="ntqwidget.html#repaint">repaint</a>(); // Ensure status text is displayed } } }; class MoviePlayer : public <a href="ntqvbox.html">TQVBox</a> { MovieScreen* movie; public: MoviePlayer(const char* fname, TQMovie m, TQWidget* p=0, const char* name=0, WFlags f=0) : <a href="ntqvbox.html">TQVBox</a>(p,name,f) { movie = new MovieScreen(fname, m, this); <a href="ntqhbox.html">TQHBox</a>* hb = new <a href="ntqhbox.html">TQHBox</a>(this); <a href="ntqpushbutton.html">TQPushButton</a>* btn; btn = new <a href="ntqpushbutton.html">TQPushButton</a>("<<", hb); <a href="ntqobject.html#connect">connect</a>(btn, SIGNAL(<a href="ntqbutton.html#clicked">clicked</a>()), movie, SLOT(<a href="ntqmovie.html#restart">restart</a>())); btn = new <a href="ntqpushbutton.html">TQPushButton</a>("||", hb); <a href="ntqobject.html#connect">connect</a>(btn, SIGNAL(<a href="ntqbutton.html#clicked">clicked</a>()), movie, SLOT(togglePause())); btn = new <a href="ntqpushbutton.html">TQPushButton</a>(">|", hb); <a href="ntqobject.html#connect">connect</a>(btn, SIGNAL(<a href="ntqbutton.html#clicked">clicked</a>()), movie, SLOT(<a href="ntqmovie.html#step">step</a>())); btn = new <a href="ntqpushbutton.html">TQPushButton</a>(">>|", hb); <a href="ntqobject.html#connect">connect</a>(btn, SIGNAL(<a href="ntqbutton.html#clicked">clicked</a>()), movie, SLOT(step10())); } }; // A TQFileDialog that chooses movies. // class MovieStarter: public <a href="ntqfiledialog.html">TQFileDialog</a> { TQ_OBJECT public: MovieStarter(const char *dir); public slots: void startMovie(const <a href="ntqstring.html">TQString</a>& filename); // TQDialog's method - normally closes the file dialog. // We want it left open, and we want Cancel to quit everything. void done( int r ); }; <a name="f258"></a>MovieStarter::MovieStarter(const char *dir) : <a href="ntqfiledialog.html">TQFileDialog</a>(dir, "*.gif *.mng") { //behave as in getOpenFilename <a href="ntqfiledialog.html#setMode">setMode</a>( ExistingFile ); // When a file is selected, show it as a movie. <a href="ntqobject.html#connect">connect</a>(this, SIGNAL(<a href="ntqfiledialog.html#fileSelected">fileSelected</a>(const <a href="ntqstring.html">TQString</a>&)), this, SLOT(startMovie(const <a href="ntqstring.html">TQString</a>&))); } void <a name="f259"></a>MovieStarter::startMovie(const <a href="ntqstring.html">TQString</a>& filename) { if ( filename ) // Start a new movie - have it delete when closed. (new MoviePlayer( filename, TQMovie(filename), 0, 0, WDestructiveClose))->show(); } <a name="x495"></a>void MovieStarter::<a href="ntqdialog.html#done">done</a>( int r ) { if (r != Accepted) tqApp-><a href="ntqapplication.html#quit">quit</a>(); // end on Cancel <a href="ntqdialog.html#setResult">setResult</a>( r ); // And don't hide. } int main(int argc, char **argv) { <a href="ntqapplication.html">TQApplication</a> a(argc, argv); if (argc > 1) { // Commandline mode - show movies given on the command line // bool gui=TRUE; for (int arg=1; arg<argc; arg++) { if ( TQString(argv[arg]) == "-i" ) gui = !gui; else if ( gui ) (void)new MoviePlayer(argv[arg], TQMovie(argv[arg]), 0, 0, TQt::WDestructiveClose); else (void)new MovieScreen(argv[arg], TQMovie(argv[arg]), 0, 0, TQt::WDestructiveClose); } TQObject::<a href="ntqobject.html#connect">connect</a>(tqApp, SIGNAL(<a href="ntqapplication.html#lastWindowClosed">lastWindowClosed</a>()), tqApp, SLOT(<a href="ntqapplication.html#quit">quit</a>())); } else { // "GUI" mode - open a chooser for movies // MovieStarter* fd = new MovieStarter("."); <a name="x494"></a> fd-><a href="ntqdialog.html#show">show</a>(); } // Go! return a.<a href="ntqapplication.html#exec">exec</a>(); } #include "main.moc" </pre> <p>See also <a href="examples.html">Examples</a>. <!-- eof --> <p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>TQt 3.3.8</div> </table></div></address></body> </html>