OpenGL Layer - Core Animation - page 141

LISTING 8-6

Continued

float vidHeight = [ self frame ]. size . height ;
if ( [ videoPaths count ] > kColCount )
vidHeight = [ self frame ]. size . height /
((( float )[ videoPaths count])/ kColCount );
vidHeight = vidHeight - kMargin ;

int row = 0;
int col = 0;

for (i = 0; i < [ videoPaths count ]; ++i)
{

NSString *path = [ videoPaths objectAtIndex :i];
QTMovie *m = [ QTMovie movieWithFile :path error : nil ];

// Mute each video
[m setMuted : YES ];

// Force the movie to loop
[m setAttribute :[ NSNumber numberWithBool : YES ]
forKey : QTMovieLoopsAttribute ];

float x = col*vidWidth;
float y = row*vidHeight;

if ( i!= 0 && (i+1) % ( int ) kColCount == 0 )
{

row++;

}
CGRect currentRect = CGRectMake (x+ kMargin ,
y+ kMargin ,
vidWidth- kMargin ,
vidHeight- kMargin );

// Instantiate a video channel for each QTMovie
// object we've created
VideoChannel *channel =
[[[ VideoChannel alloc ] initWithMovie :m
usingDisplayRect :currentRect] autorelease ];
[ videoChannels addObject :channel];

col++;
if ( col > kColCount -1 )
col = 0;