Add desktop app service and VM dev session tooling

Introduces a new `core/applications` QML/C++ module (`Nebula.Applications`) to discover `.desktop` entries, expose filterable application models, and launch installed apps safely from the shell. The desktop launcher now uses real installed apps with themed icon loading and fallback glyphs, adds output-aware surface sizing via `OutputTracker`, and wires in image/icon providers. It also adds VMware-focused Sway/shell wrapper scripts, updates Sway config/session env defaults, and refreshes README docs to document the new development flow and Desktop 0.1 behavior.
2026-08-26 17:19:30 +12:00
parent a7d204f241
commit b0c95b9e78
31 changed files with 1673 additions and 72 deletions
@@ -0,0 +1,87 @@
+#include "DesktopIconProvider.hpp"
+
+#include <QFileInfo>
+#include <QIcon>
+#include <QPixmap>
+#include <QUrl>
+
+namespace {
+
+QIcon resolveDesktopIcon(const QString &name)
+{
+    if (name.isEmpty())
+        return {};
+
+    const QFileInfo direct(name);
+    if (direct.isAbsolute() && direct.exists())
+        return QIcon(name);
+
+    QIcon themed = QIcon::fromTheme(name);
+    if (!themed.isNull())
+        return themed;
+
+    QString base = name;
+    if (base.endsWith(QLatin1String(".png"), Qt::CaseInsensitive)
+        || base.endsWith(QLatin1String(".svg"), Qt::CaseInsensitive)
+        || base.endsWith(QLatin1String(".xpm"), Qt::CaseInsensitive)) {
+        base = QFileInfo(base).completeBaseName();
+        themed = QIcon::fromTheme(base);
+        if (!themed.isNull())
+            return themed;
+    }
+
+    const QStringList pixmapDirs = {
+        QStringLiteral("/usr/share/pixmaps"),
+        QStringLiteral("/usr/share/icons/hicolor/48x48/apps"),
+        QStringLiteral("/usr/share/icons/hicolor/scalable/apps"),
+    };
+    const QStringList suffixes = {
+        QString(),
+        QStringLiteral(".png"),
+        QStringLiteral(".svg"),
+        QStringLiteral(".xpm"),
+    };
+
+    for (const QString &dir : pixmapDirs) {
+        for (const QString &suffix : suffixes) {
+            const QString candidate = dir + QLatin1Char('/') + (suffix.isEmpty() ? name : base) + suffix;
+            if (QFileInfo::exists(candidate))
+                return QIcon(candidate);
+        }
+    }
+
+    return {};
+}
+
+} // namespace
+
+DesktopIconProvider::DesktopIconProvider()
+    : QQuickImageProvider(QQuickImageProvider::Pixmap)
+{
+}
+
+QPixmap DesktopIconProvider::requestPixmap(const QString &id, QSize *size, const QSize &requestedSize)
+{
+    const QString iconName = QUrl::fromPercentEncoding(id.toUtf8());
+    const QIcon icon = resolveDesktopIcon(iconName);
+    const QSize target = requestedSize.isValid() && requestedSize.width() > 0 && requestedSize.height() > 0
+        ? requestedSize
+        : QSize(48, 48);
+
+    if (icon.isNull()) {
+        if (size)
+            *size = target;
+        return {};
+    }
+
+    const QPixmap pixmap = icon.pixmap(target);
+    if (pixmap.isNull()) {
+        if (size)
+            *size = target;
+        return {};
+    }
+
+    if (size)
+        *size = pixmap.size();
+    return pixmap;
+}