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tqt3/examples/movies/main.cpp

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/****************************************************************************
**
** Copyright (C) 1992-2008 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 <tqapplication.h>
#include <tqfiledialog.h>
#include <tqpushbutton.h>
#include <tqlabel.h>
#include <tqpainter.h>
#include <tqmessagebox.h>
#include <tqmovie.h>
#include <tqvbox.h>
class MovieScreen : public TQFrame {
TQ_OBJECT
TQMovie movie;
TQString filename;
TQSize sh;
public:
MovieScreen(const char* fname, TQMovie m, TQWidget* p=0, const char* name=0, WFlags f=0) :
TQFrame(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.
movie.setBackgroundColor(backgroundColor());
setBackgroundMode(NoBackground);
// Get the movie to tell use when interesting things happen.
movie.connectUpdate(this, TQ_SLOT(movieUpdated(const TQRect&)));
movie.connectResize(this, TQ_SLOT(movieResized(const TQSize&)));
movie.connectStatus(this, TQ_SLOT(movieStatus(int)));
setSizePolicy(TQSizePolicy(TQSizePolicy::Expanding,TQSizePolicy::Expanding));
}
TQSize 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.
TQPixmap pm = movie.framePixmap();
// Get the area we have to draw in.
TQRect r = contentsRect();
if ( !pm.isNull() ) {
// Only rescale is we need to - it can take CPU!
if ( r.size() != pm.size() ) {
TQWMatrix m;
m.scale((double)r.width()/pm.width(),
(double)r.height()/pm.height());
pm = pm.xForm(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.
//
p->drawPixmap(r.x(), r.y(), pm);
}
// The on-screen display
const char* message = 0;
if (movie.paused()) {
message = "PAUSED";
} else if (movie.finished()) {
message = "THE END";
} else if (movie.steps() > 0) {
message = "FF >>";
}
if (message) {
// Find a good font size...
p->setFont(TQFont("Helvetica", 24));
TQFontMetrics fm = p->fontMetrics();
if ( fm.width(message) > r.width()-10 )
p->setFont(TQFont("Helvetica", 18));
fm = p->fontMetrics();
if ( fm.width(message) > r.width()-10 )
p->setFont(TQFont("Helvetica", 14));
fm = p->fontMetrics();
if ( fm.width(message) > r.width()-10 )
p->setFont(TQFont("Helvetica", 12));
fm = p->fontMetrics();
if ( fm.width(message) > r.width()-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()
{
movie.restart();
repaint();
}
void togglePause()
{
if ( movie.paused() )
movie.unpause();
else
movie.pause();
repaint();
}
void step()
{
movie.step();
repaint();
}
void step10()
{
movie.step(10);
repaint();
}
private slots:
void movieUpdated(const TQRect& area)
{
if (!isVisible())
show();
// The given area of the movie has changed.
TQRect r = contentsRect();
if ( r.size() != movie.framePixmap().size() ) {
// Need to scale - redraw whole frame.
repaint( r );
} else {
// Only redraw the changed area of the frame
repaint( area.x()+r.x(), area.y()+r.x(),
area.width(), area.height() );
}
}
void movieResized(const TQSize& size)
{
// The movie changed size, probably from its initial zero size.
int fw = frameWidth();
sh = TQSize( size.width() + fw*2, size.height() + fw*2 );
updateGeometry();
if ( parentWidget() && parentWidget()->isHidden() )
parentWidget()->show();
}
void movieStatus(int status)
{
// The movie has sent us a status message.
if (status < 0) {
TQString msg;
msg.sprintf("Could not play movie \"%s\"", (const char*)filename);
TQMessageBox::warning(this, "movies", msg);
parentWidget()->close();
} else if (status == TQMovie::Paused || status == TQMovie::EndOfMovie) {
repaint(); // Ensure status text is displayed
}
}
};
class MoviePlayer : public TQVBox {
MovieScreen* movie;
public:
MoviePlayer(const char* fname, TQMovie m, TQWidget* p=0, const char* name=0, WFlags f=0) :
TQVBox(p,name,f)
{
movie = new MovieScreen(fname, m, this);
TQHBox* hb = new TQHBox(this);
TQPushButton* btn;
btn = new TQPushButton("<<", hb);
connect(btn, TQ_SIGNAL(clicked()), movie, TQ_SLOT(restart()));
btn = new TQPushButton("||", hb);
connect(btn, TQ_SIGNAL(clicked()), movie, TQ_SLOT(togglePause()));
btn = new TQPushButton(">|", hb);
connect(btn, TQ_SIGNAL(clicked()), movie, TQ_SLOT(step()));
btn = new TQPushButton(">>|", hb);
connect(btn, TQ_SIGNAL(clicked()), movie, TQ_SLOT(step10()));
}
};
// A TQFileDialog that chooses movies.
//
class MovieStarter: public TQFileDialog {
TQ_OBJECT
public:
MovieStarter(const char *dir);
public slots:
void startMovie(const TQString& 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 );
};
MovieStarter::MovieStarter(const char *dir)
: TQFileDialog(dir, "*.gif *.mng")
{
//behave as in getOpenFilename
setMode( ExistingFile );
// When a file is selected, show it as a movie.
connect(this, TQ_SIGNAL(fileSelected(const TQString&)),
this, TQ_SLOT(startMovie(const TQString&)));
}
void MovieStarter::startMovie(const TQString& filename)
{
if ( filename ) // Start a new movie - have it delete when closed.
(new MoviePlayer( filename, TQMovie(filename), 0, 0,
WDestructiveClose))->show();
}
void MovieStarter::done( int r )
{
if (r != Accepted)
tqApp->quit(); // end on Cancel
setResult( r );
// And don't hide.
}
int main(int argc, char **argv)
{
TQApplication 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::connect(tqApp, TQ_SIGNAL(lastWindowClosed()), tqApp, TQ_SLOT(quit()));
} else {
// "GUI" mode - open a chooser for movies
//
MovieStarter* fd = new MovieStarter(".");
fd->show();
}
// Go!
return a.exec();
}
#include "main.moc"