QmlDesigner: Add a separate placeholder icon for ktx textures

Fixes: QDS-9140
Change-Id: Ife2d3067860be2ae19e3c8431f1b756544b16975
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>

src/plugins/qmldesigner/components/assetslibrary/assetslibrary.qrc

@@ -19,5 +19,8 @@
         <file>images/assets_default_128.png</file>
         <file>images/asset_effectClass_128.png</file>
         <file>images/asset_effectExported_128.png</file>
+        <file>images/asset_ktx.png</file>
+        <file>images/asset_ktx@2x.png</file>
+        <file>images/asset_ktx_128.png</file>
     </qresource>
 </RCC>

src/plugins/qmldesigner/components/assetslibrary/assetslibraryiconprovider.cpp

@@ -92,8 +92,8 @@ QPair<QPixmap, qint64> AssetsLibraryIconProvider::fetchPixmap(const QString &id,
         return {pixmap, size};
     } else if (asset.isKtxFile()) {
         qint64 size = QFileInfo(id).size();
-        // TODO: Return ktx specific default image once available (QDS-9140)
-        return {{}, size};
+        QString filePath = Utils::StyleHelper::dpiSpecificImageFile(":/AssetsLibrary/images/asset_ktx.png");
+        return {QPixmap{filePath}, size};
     } else {
         QString type;
         if (asset.isShader())

src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.cpp

@@ -124,6 +124,8 @@ bool MaterialBrowserWidget::eventFilter(QObject *obj, QEvent *event)
                     const QString suffix = iconPath.split('.').last().toLower();
                     if (suffix == "hdr")
                         pixmap = HdrImage{iconPath}.toPixmap();
+                    else if (suffix == "ktx")
+                        pixmap = Utils::StyleHelper::dpiSpecificImageFile(":/textureeditor/images/texture_ktx.png");
                     else
                         pixmap = Utils::StyleHelper::dpiSpecificImageFile(iconPath);
                     if (pixmap.isNull())

src/plugins/qmldesigner/components/propertyeditor/assetimageprovider.cpp

@@ -24,6 +24,26 @@ QQuickImageResponse *AssetImageProvider::requestImageResponse(const QString &id,
     if (id.endsWith(".builtin"))
         return m_imageCacheProvider.requestImageResponse("#" + id.split('.').first(), {});
 
+    if (id.endsWith(".ktx")) {
+        auto response = std::make_unique<ImageCacheImageResponse>(m_imageCacheProvider.defaultImage());
+
+        QMetaObject::invokeMethod(
+            response.get(),
+            [response = QPointer<ImageCacheImageResponse>(response.get()), requestedSize] {
+                QImage ktxImage;
+                ktxImage.load(Utils::StyleHelper::dpiSpecificImageFile(":/textureeditor/images/texture_ktx.png"));
+                if (ktxImage.isNull())
+                    ktxImage = response->image();
+                if (requestedSize.isValid())
+                    response->setImage(ktxImage.scaled(requestedSize, Qt::KeepAspectRatio));
+                else
+                    response->setImage(ktxImage);
+        },
+        Qt::QueuedConnection);
+
+        return response.release();
+    }
+
     return m_imageCacheProvider.requestImageResponse(id, requestedSize);
 }
 

src/plugins/qmldesigner/components/textureeditor/textureeditor.qrc

@@ -2,5 +2,7 @@
     <qresource prefix="/textureeditor">
         <file>images/texture_default.png</file>
         <file>images/texture_default@2x.png</file>
+        <file>images/texture_ktx.png</file>
+        <file>images/texture_ktx@2x.png</file>
     </qresource>
 </RCC>