/*
call-seq: reset_transformations()
Revert any transformations (scale, translate, rotate) performed on this track.
*/
static VALUE track_reset_transformations(VALUE obj)
{
MatrixRecord matrix;
GetTrackMatrix(TRACK(obj), &matrix);
SetIdentityMatrix(&matrix);
SetTrackMatrix(TRACK(obj), &matrix);
return obj;
}
/*
call-seq: translate(x, y)
Offset a track's position by x and y values respectively.
Values should be in pixels.
*/
static VALUE track_translate(VALUE obj, VALUE x, VALUE y)
{
MatrixRecord matrix;
GetTrackMatrix(TRACK(obj), &matrix);
TranslateMatrix(&matrix, FloatToFixed(NUM2DBL(x)), FloatToFixed(NUM2DBL(y)));
SetTrackMatrix(TRACK(obj), &matrix);
return obj;
}
/*
call-seq: rotate(degrees)
Rotate the track by the given number of degrees.
*/
static VALUE track_rotate(VALUE obj, VALUE degrees)
{
MatrixRecord matrix;
GetTrackMatrix(TRACK(obj), &matrix);
RotateMatrix(&matrix, FloatToFixed(NUM2DBL(degrees)), 0, 0);
SetTrackMatrix(TRACK(obj), &matrix);
return obj;
}
/*
call-seq: scale(width, height)
Scale the track's size by width and height respectively.
The value passed is a relative float where "1" is the current size.
*/
static VALUE track_scale(VALUE obj, VALUE width, VALUE height)
{
MatrixRecord matrix;
GetTrackMatrix(TRACK(obj), &matrix);
ScaleMatrix(&matrix, FloatToFixed(NUM2DBL(width)), FloatToFixed(NUM2DBL(height)), 0, 0);
SetTrackMatrix(TRACK(obj), &matrix);
return obj;
}
OSErr QTTarg_AddTextToggleButtonTrack (Movie theMovie)
{
Track myTrack = NULL;
Media myMedia = NULL;
MatrixRecord myMatrix;
RGBColor myKeyColor;
Fixed myWidth, myHeight;
TimeValue myDuration = 0L;
TimeValue myTimeScale = 0L;
OSErr myErr = noErr;
//////////
//
// get some information about the target movie
//
//////////
if (theMovie == NULL) {
myErr = paramErr;
goto bail;
}
myWidth = Long2Fix(2 * kButtonWidth);
myHeight = Long2Fix(2 * kButtonHeight);
myDuration = GetMovieDuration(theMovie);
myTimeScale = GetMovieTimeScale(theMovie);
//////////
//
// create a new sprite track in the target movie
//
//////////
myTrack = NewMovieTrack(theMovie, myWidth, myHeight, kNoVolume);
myMedia = NewTrackMedia(myTrack, SpriteMediaType, myTimeScale, NULL, 0);
// set the track matrix to compensate for any existing movie matrix
GetMovieMatrix(theMovie, &myMatrix);
if (InverseMatrix(&myMatrix, &myMatrix))
SetTrackMatrix(myTrack, &myMatrix);
myErr = BeginMediaEdits(myMedia);
if (myErr != noErr)
goto bail;
//////////
//
// add sprite images and sprites to the sprite track; add actions to the sprites
//
//////////
QTTarg_AddTextButtonSamplesToMedia(myMedia, 2 * kButtonWidth, 2 * kButtonHeight, myDuration);
//////////
//
// insert media into track
//
//////////
myErr = EndMediaEdits(myMedia);
if (myErr != noErr)
goto bail;
// add the media to the track
InsertMediaIntoTrack(myTrack, 0, 0, GetMediaDuration(myMedia), fixed1);
//////////
//
// set the sprite track properties
//
//////////
QTTarg_SetTrackProperties(myMedia, kNoQTIdleEvents); // no idle events
myKeyColor.red = myKeyColor.green = myKeyColor.blue = 0xffff; // white
MediaSetGraphicsMode(GetMediaHandler(myMedia), transparent, &myKeyColor);
// make sure that the sprite track is in the frontmost layer
SetTrackLayer(myTrack, kMaxLayerNumber);
SetTrackLayer(myTrack, QTTarg_GetLowestLayerInMovie(theMovie) - 1);
bail:
return(myErr);
}
