CaptionObject
CaptionGrabber::caption()
{
CaptionObject co;
co.set(position(),
text(),
font(),
color(),
haloColor(),
angle());
return co;
}
void
CaptionObject::setCaption(CaptionObject co)
{
m_pos = co.position();
m_text = co.text();
m_font = co.font();
m_color = co.color();
m_haloColor = co.haloColor();
m_angle = co.m_angle;
QFontMetrics metric(m_font);
m_height = metric.height();
m_width = metric.width(m_text);
createImage();
}
CaptionObject
CaptionObject::interpolate(CaptionObject& cap1,
CaptionObject& cap2,
float frc)
{
bool ok = false;
QString finalText = cap1.text();
QStringList regExprs;
regExprs << "\\$[n|N]\\(\\d*\\.*\\d*\\)";
regExprs << "\\$[d|D]\\(\\d*\\.*\\d*\\)";
for (int nr=0; nr<regExprs.count(); nr++)
{
QRegExp rx(regExprs[nr]);
QStringList rem;
QString txt;
float val1;
rx.indexIn(cap1.text());
txt = rx.cap();
rem = txt.split(QRegExp("\\(|\\)"));
if (rem.count() > 1) val1 = rem[1].toFloat();
float val2;
rx.indexIn(cap2.text());
txt = rx.cap();
rem = txt.split(QRegExp("\\(|\\)"));
if (rem.count() > 1) val2 = rem[1].toFloat();
float val = (1-frc)*val1 + frc*val2;
QString ftxt = QString("%1").arg(val, 0, 'f', Global::floatPrecision());
if (Global::floatPrecision() > 0)
{
QStringList frem = ftxt.split(".");
float fraction = frem[1].toFloat();
if (fraction < 0.00001)
ftxt = frem[0];
}
if (nr == 0)
finalText.replace(rx, ftxt);
else
finalText.replace(rx, "$d("+ftxt+")");
ok = true;
}
if (!ok &&
cap1.text() != cap2.text())
{
// apply fadein-fadeout
CaptionObject cap;
if (frc <= 0.5)
cap.setCaption(cap1);
else
cap.setCaption(cap2);
// QColor c = cap.color();
// float r = c.redF();
// float g = c.greenF();
// float b = c.blueF();
// float a;
//
// if (frc <= 0.5)
// a = (1-frc)*c.alphaF();
// else
// a = frc*c.alphaF();
// c = QColor::fromRgbF(r,g,b,a);
// cap.setColor(c);
//
// QColor hc = cap.haloColor();
// r = hc.redF();
// g = hc.greenF();
// b = hc.blueF();
// if (frc <= 0.5)
// a = (1-frc)*hc.alphaF();
// else
// a = frc*hc.alphaF();
// hc = QColor::fromRgbF(r,g,b,a);
// cap.setHaloColor(hc);
return cap;
}
// interpolate position, color and font
CaptionObject cap;
QFont fnt = cap1.font();
QFont fnt2 = cap2.font();
if (fnt.family() == fnt2.family())
{
// interpolate pointsize
int pt1 = fnt.pointSize();
int pt2 = fnt2.pointSize();
int pt = (1-frc)*pt1 + frc*pt2;
fnt.setPointSize(pt);
}
// interpolate position
QPointF pos1 = cap1.position();
QPointF pos2 = cap2.position();
QPointF pos = pos1-pos2;
if (fabs(pos.x()) > 5 || fabs(pos.y()) > 5 ) // more than 5 pixel change
pos = (1-frc)*pos1 + frc*pos2;
else
{
if (frc <0.5)
pos = pos1;
else
pos = pos2;
}
// interpolate color
QColor c = cap1.color();
float r1 = c.redF();
float g1 = c.greenF();
float b1 = c.blueF();
float a1 = c.alphaF();
c = cap2.color();
float r2 = c.redF();
float g2 = c.greenF();
float b2 = c.blueF();
float a2 = c.alphaF();
float r = (1-frc)*r1 + frc*r2;
float g = (1-frc)*g1 + frc*g2;
float b = (1-frc)*b1 + frc*b2;
float a = (1-frc)*a1 + frc*a2;
c = QColor(r*255, g*255, b*255, a*255);
// interpolate halocolor
QColor hc = cap1.haloColor();
r1 = hc.redF();
g1 = hc.greenF();
b1 = hc.blueF();
a1 = hc.alphaF();
hc = cap2.haloColor();
r2 = hc.redF();
g2 = hc.greenF();
b2 = hc.blueF();
a2 = c.alphaF();
r = (1-frc)*r1 + frc*r2;
g = (1-frc)*g1 + frc*g2;
b = (1-frc)*b1 + frc*b2;
a = (1-frc)*a1 + frc*a2;
hc = QColor(r*255, g*255, b*255, a*255);
float angle = (1-frc)*cap1.angle() + frc*cap2.angle();
cap.set(pos,
finalText,
fnt,
c, hc,
angle);
return cap;
}
