Support QQuickImageProvider in the runtime

With QQuickImageProvider the user can make a callback method returning a
custom QPixmap or QImage to the engine without accessing the filesystem.

Texture sourcepaths are set using an image url scheme. For example
"image://colors/blue" where "image://" tells the runtime to look for an
image provider, "colors" is the image provider id and rest are the image
id the provider uses to create the image.

Task-number: QT3DS-3761
Change-Id: I830649359f9969e957a972a0c08d0ede6e46ee78
Reviewed-by: Antti Määttä <antti.maatta@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/engine/Qt3DSRuntimeView.cpp b/src/engine/Qt3DSRuntimeView.cpp
index 3ab577c..c5448e3 100644
--- a/src/engine/Qt3DSRuntimeView.cpp
+++ b/src/engine/Qt3DSRuntimeView.cpp
@@ -225,6 +225,7 @@ public:
     void deleteMaterials(const QStringList &materialNames) override;
     void createMesh(const QString &name, qt3dsimp::Mesh *mesh) override;
     void deleteMeshes(const QStringList &meshNames) override;
+    void addImageProvider(const QString &providerId, QQmlImageProviderBase *provider) override;
     void SetAttribute(const char *elementPath, const char *attributeName,
                       const char *value) override;
     bool GetAttribute(const char *elementPath, const char *attributeName, void *value) override;
@@ -733,6 +734,15 @@ void CRuntimeView::deleteMeshes(const QStringList &meshNames)
     }
 }
 
+void CRuntimeView::addImageProvider(const QString &providerId, QQmlImageProviderBase *provider)
+{
+    if (m_Application) {
+        IBufferManager &bufferManager
+                = m_RuntimeFactory->GetQt3DSRenderContext().GetBufferManager();
+        bufferManager.addImageProvider(providerId, provider);
+    }
+}
+
 void CRuntimeView::SetAttribute(const char *elementPath, const char *attributeName,
                                 const char *value)
 {