QThemeIconEntries QIconLoader::loadIcon(const QString &name) const
{
if (!themeName().isEmpty()) {
QStringList visited;
return findIconHelper(themeName(), name, visited);
}
return QThemeIconEntries();
}
static QString findIconHelper(const QString &pathName, const QString &icon)
{
QStringList extensions;
extensions << "";
extensions << ".png";
extensions << ".svg";
// qDebug() << "Trying " << pathName << " for " << icon;
foreach (const QString &extension, extensions) {
if (QFile::exists(pathName + QDir::separator() + icon + extension))
return pathName + QDir::separator() + icon + extension;
}
QStringList entryList = QDir(pathName).entryList(QStringList(), QDir::AllDirs | QDir::NoDotAndDotDot);
foreach (const QString &dir, entryList) {
QString retval = findIconHelper(QDir(pathName).absoluteFilePath(dir), icon);
if (!retval.isNull())
return retval;
}
QThemeIconEntries QIconLoader::findIconHelper(const QString &themeName,
const QString &iconName,
QStringList &visited) const
{
QThemeIconEntries entries;
Q_ASSERT(!themeName.isEmpty());
QPixmap pixmap;
// Used to protect against potential recursions
visited << themeName;
QIconTheme theme = themeList.value(themeName);
if (!theme.isValid()) {
theme = QIconTheme(themeName);
if (!theme.isValid())
theme = QIconTheme(fallbackTheme());
themeList.insert(themeName, theme);
}
QString contentDir = theme.contentDir() + QLatin1Char('/');
QList<QIconDirInfo> subDirs = theme.keyList();
const QString svgext(QLatin1String(".svg"));
const QString pngext(QLatin1String(".png"));
// Add all relevant files
for (int i = 0; i < subDirs.size() ; ++i) {
const QIconDirInfo &dirInfo = subDirs.at(i);
QString subdir = dirInfo.path;
QDir currentDir(contentDir + subdir);
if (currentDir.exists(iconName + pngext)) {
PixmapEntry *iconEntry = new PixmapEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(iconName + pngext);
// Notice we ensure that pixmap entries always come before
// scalable to preserve search order afterwards
entries.prepend(iconEntry);
} else if (m_supportsSvg &&
currentDir.exists(iconName + svgext)) {
ScalableEntry *iconEntry = new ScalableEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(iconName + svgext);
entries.append(iconEntry);
}
}
if (entries.isEmpty()) {
const QStringList parents = theme.parents();
// Search recursively through inherited themes
for (int i = 0 ; i < parents.size() ; ++i) {
const QString parentTheme = parents.at(i).trimmed();
if (!visited.contains(parentTheme)) // guard against recursion
entries = findIconHelper(parentTheme, iconName, visited);
if (!entries.isEmpty()) // success
break;
}
}
return entries;
}
QThemeIconEntries QIconLoader::findIconHelper(const QString &themeName,
const QString &iconName,
QStringList &visited) const
{
QThemeIconEntries entries;
Q_ASSERT(!themeName.isEmpty());
QPixmap pixmap;
// Used to protect against potential recursions
visited << themeName;
QIconTheme theme = themeList.value(themeName);
if (!theme.isValid()) {
theme = QIconTheme(themeName);
if (!theme.isValid())
theme = QIconTheme(QIcon::themeName());//fallbackTheme());
themeList.insert(themeName, theme);
}
QString contentDir = theme.contentDir() + QLatin1Char('/');
QList<QIconDirInfo> subDirs = theme.keyList();
const QString svgext(QLatin1String(".svg"));
const QString pngext(QLatin1String(".png"));
const QString xpmext(QLatin1String(".xpm"));
// Add all relevant files
for (int i = 0; i < subDirs.size() ; ++i) {
const QIconDirInfo &dirInfo = subDirs.at(i);
QString subdir = dirInfo.path;
QDir currentDir(contentDir + subdir);
if (currentDir.exists(iconName + pngext)) {
PixmapEntry *iconEntry = new PixmapEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(iconName + pngext);
// Notice we ensure that pixmap entries always come before
// scalable to preserve search order afterwards
entries.prepend(iconEntry);
} else if (m_supportsSvg &&
currentDir.exists(iconName + svgext)) {
ScalableEntry *iconEntry = new ScalableEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(iconName + svgext);
entries.append(iconEntry);
} else if (currentDir.exists(iconName + xpmext)) {
PixmapEntry *iconEntry = new PixmapEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(iconName + xpmext);
// Notice we ensure that pixmap entries always come before
// scalable to preserve search order afterwards
entries.append(iconEntry);
}
}
if (entries.isEmpty()) {
const QStringList parents = theme.parents();
// Search recursively through inherited themes
for (int i = 0 ; i < parents.size() ; ++i) {
const QString parentTheme = parents.at(i).trimmed();
if (!visited.contains(parentTheme)) // guard against recursion
entries = findIconHelper(parentTheme, iconName, visited);
if (!entries.isEmpty()) // success
break;
}
}
/*********************************************************************
Author: Kaitlin Rupert <*****@*****.**>
Date: Aug 12, 2010
Description: Make it so that the QIcon loader honors /usr/share/pixmaps
directory. This is a valid directory per the Freedesktop.org
icon theme specification.
Bug: https://bugreports.qt.nokia.com/browse/QTBUG-12874
*********************************************************************/
#ifdef Q_OS_LINUX
/* Freedesktop standard says to look in /usr/share/pixmaps last */
if (entries.isEmpty()) {
const QString pixmaps(QLatin1String("/usr/share/pixmaps"));
QDir currentDir(pixmaps);
if (currentDir.exists(iconName + pngext)) {
PixmapEntry *iconEntry = new PixmapEntry;
iconEntry->dir = pixmaps;
iconEntry->filename = currentDir.filePath(iconName + pngext);
// Notice we ensure that pixmap entries allways come before
// scalable to preserve search order afterwards
entries.prepend(iconEntry);
} else if (m_supportsSvg &&
currentDir.exists(iconName + svgext)) {
ScalableEntry *iconEntry = new ScalableEntry;
iconEntry->dir = pixmaps;
iconEntry->filename = currentDir.filePath(iconName + svgext);
entries.append(iconEntry);
} else if (currentDir.exists(iconName + xpmext)) {
PixmapEntry *iconEntry = new PixmapEntry;
iconEntry->dir = pixmaps;
iconEntry->filename = currentDir.filePath(iconName + xpmext);
// Notice we ensure that pixmap entries always come before
// scalable to preserve search order afterwards
entries.append(iconEntry);
}
}
#endif
return entries;
}
QThemeIconInfo QIconLoader::findIconHelper(const QString &themeName,
const QString &iconName,
QStringList &visited) const
{
QThemeIconInfo info;
Q_ASSERT(!themeName.isEmpty());
QPixmap pixmap;
// Used to protect against potential recursions
visited << themeName;
QIconTheme theme = themeList.value(themeName);
if (!theme.isValid()) {
theme = QIconTheme(themeName);
if (!theme.isValid())
theme = QIconTheme(fallbackTheme());
themeList.insert(themeName, theme);
}
const QStringList contentDirs = theme.contentDirs();
const QVector<QIconDirInfo> subDirs = theme.keyList();
QString iconNameFallback = iconName;
// Iterate through all icon's fallbacks in current theme
while (info.entries.isEmpty()) {
const QString svgIconName = iconNameFallback + QLatin1String(".svg");
const QString pngIconName = iconNameFallback + QLatin1String(".png");
// Add all relevant files
for (int i = 0; i < contentDirs.size(); ++i) {
QString contentDir = contentDirs.at(i) + QLatin1Char('/');
for (int j = 0; j < subDirs.size() ; ++j) {
const QIconDirInfo &dirInfo = subDirs.at(j);
QString subdir = dirInfo.path;
QDir currentDir(contentDir + subdir);
if (currentDir.exists(pngIconName)) {
PixmapEntry *iconEntry = new PixmapEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(pngIconName);
// Notice we ensure that pixmap entries always come before
// scalable to preserve search order afterwards
info.entries.prepend(iconEntry);
} else if (m_supportsSvg &&
currentDir.exists(svgIconName)) {
ScalableEntry *iconEntry = new ScalableEntry;
iconEntry->dir = dirInfo;
iconEntry->filename = currentDir.filePath(svgIconName);
info.entries.append(iconEntry);
}
}
}
if (!info.entries.isEmpty()) {
info.iconName = iconNameFallback;
break;
}
// If it's possible - find next fallback for the icon
const int indexOfDash = iconNameFallback.lastIndexOf(QLatin1Char('-'));
if (indexOfDash == -1)
break;
iconNameFallback.truncate(indexOfDash);
}
if (info.entries.isEmpty()) {
const QStringList parents = theme.parents();
// Search recursively through inherited themes
for (int i = 0 ; i < parents.size() ; ++i) {
const QString parentTheme = parents.at(i).trimmed();
if (!visited.contains(parentTheme)) // guard against recursion
info = findIconHelper(parentTheme, iconName, visited);
if (!info.entries.isEmpty()) // success
break;
}
}
return info;
}
