QPixmap
KnobGuiButton::loadPixmapInternal(bool checked, bool applyColorOverlay, const QColor& overlayColor)
{
KnobGuiPtr knobUI = getKnobGui();
KnobButtonPtr knob = _knob.lock();
EffectInstancePtr isEffect = toEffectInstance( knob->getHolder() );
KnobTableItemPtr isTableItem = toKnobTableItem(knob->getHolder());
if (isTableItem) {
isEffect = isTableItem->getModel()->getNode()->getEffectInstance();
}
QString filePath;
if (knobUI->getLayoutType() == KnobGui::eKnobLayoutTypeViewerUI) {
filePath = QString::fromUtf8( knob->getInViewerContextIconFilePath(checked).c_str() );
} else {
filePath = QString::fromUtf8( knob->getIconLabel(checked).c_str() );
}
if ( !filePath.isEmpty() && !QFile::exists(filePath) ) {
if (isEffect) {
//Prepend the resources path
QString resourcesPath = QString::fromUtf8( isEffect->getNode()->getPluginResourcesPath().c_str() );
if ( !resourcesPath.endsWith( QLatin1Char('/') ) ) {
resourcesPath += QLatin1Char('/');
}
filePath.prepend(resourcesPath);
}
}
if ( !filePath.isEmpty() ) {
#if 0
QPixmap pix;
if (pix.load(filePath)) {
return pix;
}
#else
QImage img;
if ( img.load(filePath) ) {
if (applyColorOverlay) {
int depth = img.depth();
if (depth != 32) {
img = img.convertToFormat(QImage::Format_ARGB32);
}
depth = img.depth();
assert(depth == 32);
for (int y = 0; y < img.height(); ++y) {
QRgb* pix = (QRgb*)img.scanLine(y);
for (int x = 0; x < img.width(); ++x) {
QRgb srcPix = pix[x];
double a = qAlpha(srcPix) / 255.f;
double r = qRed(srcPix) / 255.f * a;
double g = qGreen(srcPix) / 255.f * a;
double b = qBlue(srcPix) / 255.f * a;
r = Image::clamp(overFunctor(overlayColor.redF(), r, overlayColor.alphaF()), 0., 1.);
g = Image::clamp(overFunctor(overlayColor.greenF(), g, overlayColor.alphaF()), 0., 1.);
b = Image::clamp(overFunctor(overlayColor.blueF(), b, overlayColor.alphaF()), 0., 1.);
a = Image::clamp(overFunctor(overlayColor.alphaF(), a, overlayColor.alphaF()) * a, 0., 1.);
QRgb p = qRgba(r * 255, g * 255, b * 255, a * 255);
img.setPixel(x, y, p);
}
}
}
QPixmap pix = QPixmap::fromImage(img);
return pix;
}
#endif
}
return QPixmap();
} // loadPixmapInternal
