MegaMolGraph: prepare use of project directory for modules

UniStuttgart-VISUS · May 19, 2023 · 58c547e · 58c547e
1 parent 4f5d7cc
commit 58c547e
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Showing 2 changed files with 15 additions and 0 deletions.
diff --git a/core/include/mmcore/MegaMolGraph.h b/core/include/mmcore/MegaMolGraph.h
@@ -14,7 +14,9 @@
 #include "FrontendResource.h"
 #include "FrontendResourcesLookup.h"
 #include "ImagePresentationEntryPoints.h"
+#include "MegaMolProject.h"
 #include "ModuleGraphSubscription.h"
+
 #include "mmcore/MegaMolGraphTypes.h"
 #include "mmcore/MegaMolGraph_Convenience.h"
 #include "mmcore/RootModuleNamespace.h"
@@ -136,6 +138,8 @@ class MegaMolGraph {
     std::list<Module::ptr_type> graph_entry_points;
     megamol::frontend_resources::ImagePresentationEntryPoints* m_image_presentation = nullptr;
 
+    megamol::frontend_resources::MegaMolProject* m_current_project_path = nullptr;
+
     MegaMolGraph_Convenience convenience_functions;
 
     frontend_resources::MegaMolGraph_SubscriptionRegistry graph_subscribers;

diff --git a/core/src/MegaMolGraph.cpp b/core/src/MegaMolGraph.cpp
@@ -476,6 +476,7 @@ bool megamol::core::MegaMolGraph::AddFrontendResources(
 
     auto [success, graph_resources] = provided_resources_lookup.get_requested_resources({
         "ImagePresentationEntryPoints",
+        "MegaMolProject",
     });
 
     if (!success)
@@ -484,6 +485,9 @@ bool megamol::core::MegaMolGraph::AddFrontendResources(
     m_image_presentation = &const_cast<megamol::frontend_resources::ImagePresentationEntryPoints&>(
         graph_resources[0].getResource<megamol::frontend_resources::ImagePresentationEntryPoints>());
 
+    m_current_project_path = &const_cast<megamol::frontend_resources::MegaMolProject&>(
+        graph_resources[1].getResource<megamol::frontend_resources::MegaMolProject>());
+
     return true;
 }
 
@@ -598,6 +602,13 @@ bool megamol::core::MegaMolGraph::add_module(ModuleInstantiationRequest_t const&
 
     module_ptr->setParent(this->dummy_namespace);
 
+    // we want to enable filename parameters to open file paths relative to the current .lua project file
+    // for this to work we need to manually find FilePathParam parameters in created modules and tell them
+    // the current project directory path
+    if (m_current_project_path->attributes.has_value()) {
+        auto project_directory_path = m_current_project_path->attributes.value().project_directory;
+    }
+
     const auto create_module = [module_description, module_ptr](auto& module_lifetime_dependencies) {
         const bool init_ok =
             module_ptr->Create(module_lifetime_dependencies); // seems like Create() internally checks IsAvailable()