void QPixmapIconEngine::addFile(const QString &fileName, const QSize &size, QIcon::Mode mode, QIcon::State state)
{
if (fileName.isEmpty())
return;
const QString abs = fileName.startsWith(QLatin1Char(':')) ? fileName : QFileInfo(fileName).absoluteFilePath();
const bool ignoreSize = !size.isValid();
ImageReader imageReader(abs);
const QByteArray format = imageReader.format();
if (format.isEmpty()) // Device failed to open or unsupported format.
return;
QImage image;
if (format != "ico") {
if (ignoreSize) { // No size specified: Add all images.
while (imageReader.read(&image))
pixmaps += QPixmapIconEngineEntry(abs, image, mode, state);
} else {
// Try to match size. If that fails, add a placeholder with the filename and empty pixmap for the size.
while (imageReader.read(&image) && image.size() != size) {}
pixmaps += image.size() == size ?
QPixmapIconEngineEntry(abs, image, mode, state) : QPixmapIconEngineEntry(abs, size, mode, state);
}
return;
}
// Special case for reading Windows ".ico" files. Historically (QTBUG-39287),
// these files may contain low-resolution images. As this information is lost,
// ICOReader sets the original format as an image text key value. Read all matching
// images into a list trying to find the highest quality per size.
QList<QImage> icoImages;
while (imageReader.read(&image)) {
if (ignoreSize || image.size() == size) {
const int position = findBySize(icoImages, image.size());
if (position >= 0) { // Higher quality available? -> replace.
if (origIcoDepth(image) > origIcoDepth(icoImages.at(position)))
icoImages[position] = image;
} else {
icoImages.append(image);
}
}
}
foreach (const QImage &i, icoImages)
pixmaps += QPixmapIconEngineEntry(abs, i, mode, state);
if (icoImages.isEmpty() && !ignoreSize) // Add placeholder with the filename and empty pixmap for the size.
pixmaps += QPixmapIconEngineEntry(abs, size, mode, state);
}
void QPixmapIconEngine::addPixmap(const QPixmap &pixmap, QIcon::Mode mode, QIcon::State state)
{
if (!pixmap.isNull()) {
QPixmapIconEngineEntry *pe = tryMatch(pixmap.size(), mode, state);
if(pe && pe->size == pixmap.size()) {
pe->pixmap = pixmap;
pe->fileName.clear();
} else {
pixmaps += QPixmapIconEngineEntry(pixmap, mode, state);
}
}
}
