QmlDesigner: Allow adding imported 3D models using the context menu

Also some changes to support translation and avoid translation-related
issues.

Change-Id: Ie2cc491cf491ac4c14e12e8cf666d4b452b9e7c1
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/qmldesigner/components/edit3d/edit3dview.cpp

@@ -32,6 +32,7 @@
 #include "metainfo.h"
 #include "seekerslider.h"
 #include "view3dactioncommand.h"
+#include "nodehints.h"
 
 #include <coreplugin/icore.h>
 #include <coreplugin/messagebox.h>
@@ -46,7 +47,6 @@
 #include <utils/qtcassert.h>
 #include <utils/utilsicons.h>
 
-#include <QDebug>
 #include <QToolButton>
 
 namespace QmlDesigner {
@@ -222,19 +222,40 @@ void Edit3DView::onEntriesChanged()
 
 void Edit3DView::handleEntriesChanged()
 {
-    QMap<QString, QList<ItemLibraryEntry>> entriesMap {
-        {"Camera", {}},
-        {"Lights", {}},
-        {"Models", {}}
+    if (!model())
+        return;
+
+    const QString cameras = tr("Cameras");
+    const QString lights = tr("Lights");
+    const QString primitives = tr("Primitives");
+    const QString importedModels = tr("Imported Models");
+    const QStringList keys {cameras, lights, primitives, importedModels}; // used to maintain order
+
+    QHash<QString, QList<ItemLibraryEntry>> entriesMap {
+        {cameras, {}},
+        {lights, {}},
+        {primitives, {}},
+        {importedModels, {}}
     };
 
     const QList<ItemLibraryEntry> itemLibEntries = model()->metaInfo().itemLibraryInfo()->entries();
     for (const ItemLibraryEntry &entry : itemLibEntries) {
-        if (entry.typeName().startsWith("QtQuick3D.") && entriesMap.contains(entry.category()))
-            entriesMap[entry.category()].append(entry);
+        if (entry.typeName() == "QtQuick3D.Model") {
+            entriesMap[primitives].append(entry);
+        } else if (entry.typeName() == "QtQuick3D.DirectionalLight"
+                || entry.typeName() == "QtQuick3D.PointLight"
+                || entry.typeName() == "QtQuick3D.SpotLight") {
+            entriesMap[lights].append(entry);
+        } else if (entry.typeName() == "QtQuick3D.OrthographicCamera"
+                || entry.typeName() == "QtQuick3D.PerspectiveCamera") {
+            entriesMap[cameras].append(entry);
+        } else if (entry.typeName().startsWith("Quick3DAssets.")
+                   && NodeHints::fromItemLibraryEntry(entry).canBeDroppedInView3D()) {
+            entriesMap[importedModels].append(entry);
+        }
     }
 
-    m_edit3DWidget->updateCreateSubMenu(entriesMap);
+    m_edit3DWidget->updateCreateSubMenu(keys, entriesMap);
 }
 
 void Edit3DView::modelAboutToBeDetached(Model *model)

src/plugins/qmldesigner/components/edit3d/edit3dwidget.cpp

@@ -193,8 +193,9 @@ void Edit3DWidget::createContextMenu()
     });
 }
 
-// Called by the view to update the "create" sub-menu when the Quick3D entries are ready
-void Edit3DWidget::updateCreateSubMenu(const QMap<QString, QList<ItemLibraryEntry>> &entriesMap)
+// Called by the view to update the "create" sub-menu when the Quick3D entries are ready.
+void Edit3DWidget::updateCreateSubMenu(const QStringList &keys,
+                                       const QHash<QString, QList<ItemLibraryEntry>> &entriesMap)
 {
     if (!m_contextMenu)
         return;
@@ -207,14 +208,17 @@ void Edit3DWidget::updateCreateSubMenu(const QMap<QString, QList<ItemLibraryEntr
     m_nameToEntry.clear();
     m_createSubMenu = m_contextMenu->addMenu(tr("Create"));
 
-    const QStringList categories = entriesMap.keys();
-    for (const QString &cat : categories) {
+    for (const QString &cat : keys) {
+        QList<ItemLibraryEntry> entries = entriesMap.value(cat);
+        if (entries.isEmpty())
+            continue;
+
         QMenu *catMenu = m_createSubMenu->addMenu(cat);
 
-        QList<ItemLibraryEntry> entries = entriesMap.value(cat);
         std::sort(entries.begin(), entries.end(), [](const ItemLibraryEntry &a, const ItemLibraryEntry &b) {
             return a.name() < b.name();
         });
+
         for (const ItemLibraryEntry &entry : std::as_const(entries)) {
             QAction *action = catMenu->addAction(entry.name(), this, &Edit3DWidget::onCreateAction);
             action->setData(entry.name());

src/plugins/qmldesigner/components/edit3d/edit3dwidget.h

@@ -58,7 +58,8 @@ public:
     void showBackgroundColorMenu(bool show, const QPoint &pos);
 
     void showContextMenu(const QPoint &pos, const ModelNode &modelNode);
-    void updateCreateSubMenu(const QMap<QString, QList<ItemLibraryEntry>> &entriesMap);
+    void updateCreateSubMenu(const QStringList &keys,
+                             const QHash<QString, QList<ItemLibraryEntry>> &entriesMap);
 
 private slots:
     void onCreateAction();