void PixelClassifier::preprocess() {
Mat preProcessed;
Size blurSize(5,5);
GaussianBlur(sourceImage, preProcessed, blurSize, 0);
sourceImage = preProcessed;
}
void GLImageDrawable::updateShadow()
{
if(!m_shadowDrawable)
return;
QImage sourceImg = m_imageWithBorder.isNull() ? m_image : m_imageWithBorder;
QSizeF originalSizeWithBorder = sourceImg.size();
QPointF scale = m_glw ? QPointF(m_glw->transform().m11(), m_glw->transform().m22()) : QPointF(1.,1.);
if(scale.x() < 1.25 && scale.y() < 1.25)
scale = QPointF(1,1);
double radius = m_shadowBlurRadius;
// create temporary pixmap to hold a copy of the text
double radiusSpacing = radius;// / 1.75;// * 1.5;
double radius2 = radius * 2;
// double offx = 0; //fabs(m_shadowOffset.x());
// double offy = 0; //fabs(m_shadowOffset.y());
double newWidth = originalSizeWithBorder.width()
+ radius2 * scale.x();// blur on both sides
//+ offx * scale.x();
double newHeight = originalSizeWithBorder.height()
+ radius2 * scale.y();// blur on both sides
//+ offy * scale.y();
QSizeF blurSize(newWidth,newHeight);
// blurSize.rwidth() *= scale.x();
// blurSize.rheight() *= scale.y();
//qDebug() << "GLImageDrawable::applyBorderAndShadow(): Blur size:"<<blurSize<<", originalSizeWithBorder:"<<originalSizeWithBorder<<", radius:"<<radius<<", radius2:"<<radius2<<", m_shadowOffset:"<<m_shadowOffset<<", offx:"<<offx<<", offy:"<<offy<<", scale:"<<scale;
QImage tmpImage(blurSize.toSize(),QImage::Format_ARGB32_Premultiplied);
memset(tmpImage.scanLine(0),0,tmpImage.byteCount());
// render the source image into a temporary buffer for bluring
QPainter tmpPainter(&tmpImage);
//tmpPainter.scale(scale.x(),scale.y());
tmpPainter.save();
QPointF translate1(radiusSpacing,
radiusSpacing);
translate1.rx() *= scale.x();
translate1.ry() *= scale.y();
//qDebug() << "stage1: radiusSpacing:"<<radiusSpacing<<", m_shadowOffset:"<<m_shadowOffset<<", translate1:"<<translate1;
//qDebug() << "GLImageDrawable::updateShadow(): translate1:"<<translate1<<", scale:"<<scale;
tmpPainter.translate(translate1);
tmpPainter.drawImage(0,0,sourceImg);
tmpPainter.restore();
// color the orignal image by applying a color to the copy using a QPainter::CompositionMode_DestinationIn operation.
// This produces a homogeneously-colored pixmap.
QRect imgRect = tmpImage.rect();
tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
QColor color = m_shadowColor;
// clamp m_shadowOpacity to 1.0 because we handle values >1.0 by repainting the blurred image over itself (m_shadowOpacity-1) times.
color.setAlpha((int)(255.0 * (m_shadowOpacity > 1.0 ? 1.0 : m_shadowOpacity)));
tmpPainter.fillRect(imgRect, color);
tmpPainter.end();
// blur the colored text
ImageFilters::blurImage(tmpImage, (int)(radius * scale.x()));
if(m_shadowOpacity > 1.0)
{
QPainter painter2(&tmpImage);
int times = (int)(m_shadowOpacity - 1.0);
// Cap at 10 - an arbitrary cap just to prevent the user from taxing the CPU too much.
if(times > 10)
times = 10;
double finalOpacity = m_shadowOpacity - ((int)m_shadowOpacity);
if(finalOpacity < 0.001)
finalOpacity = 1.0;
QImage copy = tmpImage.copy();
for(int i=0; i<times-1; i++)
painter2.drawImage(0,0,copy);
//qDebug() << "Overpaint feature: times:"<<times<<", finalOpacity:"<<finalOpacity;
painter2.setOpacity(finalOpacity);
painter2.drawImage(0,0,copy);
painter2.setOpacity(1.0);
}
// {
// QPainter painter2(&tmpImage);
// painter2.setPen(Qt::yellow);
//
// QPointF translate1(radiusSpacing,
// radiusSpacing);
// translate1.rx() *= scale.x();
// translate1.ry() *= scale.y();
// //qDebug() << "stage1: radiusSpacing:"<<radiusSpacing<<", m_shadowOffset:"<<m_shadowOffset<<", translate1:"<<translate1;
// //qDebug() << "GLImageDrawable::updateShadow(): translate1:"<<translate1<<", scale:"<<scale;
//
// painter2.translate(translate1);
// painter2.drawImage(0,0,sourceImg);
// painter2.drawRect(sourceImg.rect());
//
// }
// Notice: Older versions of this shadow code drew the sourceImg back on top of the shadow -
// Since we are drawaing the drop shadow as a separate texture below the real image in the
// m_shadowDrawable, we are not going to draw the sourceImg on top now.
//qDebug() << "GLImageDrawable::updateShadow(): shadow location:"<<point<<", size:"<<tmpImage.size()<<", rect().topLeft():"<<rect().topLeft()<<", m_shadowOffset:"<<m_shadowOffset<<", radiusSpacing:"<<radiusSpacing;
bool scaleFlag = dynamic_cast<GLTextDrawable*>(this) == NULL;
// double scale_w = scaleFlag ? fabs((double)(rect().width() - sourceImg.width())) / sourceImg.width() : 1.0;
// double scale_h = scaleFlag ? fabs((double)(rect().height() - sourceImg.height())) / sourceImg.height() : 1.0;
double scale_w = scaleFlag ? m_targetRect.width() / m_sourceRect.width() : 1.0;
double scale_h = scaleFlag ? m_targetRect.height() / m_sourceRect.height() : 1.0;
// scale_w *= 2;
// scale_h *= 2;
QSizeF size(((double)tmpImage.width()) * scale_w, ((double)tmpImage.height()) * scale_h);
QPointF point = rect().topLeft() + QPointF(m_shadowOffset.x() * scale_w, m_shadowOffset.y() * scale_h) - QPointF(m_shadowBlurRadius * scale_w,m_shadowBlurRadius * scale_h);
//qDebug() << "GLImageDrawable::updateShadow: "<<(QObject*)this<<" m_targetRect:"<<m_targetRect.size()<<", m_sourceRect:"<<m_sourceRect.size()<<", scale:"<<scale_w<<"x"<<scale_h<<", tmpImage:"<<tmpImage.size()<<", new size:"<<size<<", point:"<<point;
m_shadowDrawable->setRect(QRectF(point, size));
m_shadowDrawable->setImage(tmpImage);
//updateGL();
}
