Improved context handling. Previously FRS_initialize() was used for both

initializing Freestyle and specifying contexts, making the API a bit messy.
Now FRS_initialize() is only for initialization, and contexts are specified
by new FRS_set_context() function just before starting rendering.

source/blender/editors/screen/screen_ops.c

@@ -2671,6 +2671,9 @@ static int screen_render_exec(bContext *C, wmOperator *op)
 	}
 	RE_test_break_cb(re, NULL, (int (*)(void *)) blender_test_break);
 	
+	/* inform Freestyle of the context */
+	FRS_set_context(C);
+
 	if(RNA_boolean_get(op->ptr, "animation"))
 		RE_BlenderAnim(re, scene, scene->r.sfra, scene->r.efra, scene->frame_step);
 	else
@@ -2945,6 +2948,9 @@ static int screen_render_invoke(bContext *C, wmOperator *op, wmEvent *event)
 	/* handle UI stuff */
 	WM_cursor_wait(1);
 
+	/* inform Freestyle of the context */
+	FRS_set_context(C);
+
 	/* flush multires changes (for sculpt) */
 	multires_force_update(CTX_data_active_object(C));
 	

source/blender/freestyle/FRS_freestyle.h

@@ -16,7 +16,8 @@ extern "C" {
 	extern int freestyle_viewport[4];
 
 	// Rendering
-	void FRS_initialize(bContext* C);
+	void FRS_initialize();
+	void FRS_set_context(bContext* C);
 	void FRS_add_Freestyle( struct Render* re);
 	void FRS_exit();
 	

source/blender/freestyle/intern/application/Controller.cpp

@@ -71,7 +71,7 @@ extern "C" {
 
 
 
-Controller::Controller(bContext* C)
+Controller::Controller()
 {
 	
   const string sep(Config::DIR_SEP.c_str());
@@ -108,7 +108,7 @@ Controller::Controller(bContext* C)
 
   _Canvas = new AppCanvas;
 
-  _inter = new PythonInterpreter(C);
+  _inter = new PythonInterpreter();
   _EnableQI = true;
   _ComputeRidges = true;
   _ComputeSteerableViewMap = false;
@@ -175,6 +175,13 @@ void Controller::setView(AppView *iView)
   _Canvas->setViewer(_pView);
 }
 
+void Controller::setContext(bContext *C)
+{
+  PythonInterpreter* py_inter = dynamic_cast<PythonInterpreter*>(_inter);
+  assert(py_inter != 0);
+  py_inter->setContext(C);
+}
+
 int Controller::LoadMesh(Render *re, SceneRenderLayer* srl)
 {
   

source/blender/freestyle/intern/application/Controller.h

@@ -66,10 +66,11 @@ extern "C" {
 class Controller
 {
 public:
-  Controller(bContext* C) ;
+  Controller() ;
   ~Controller() ;
   
   void setView(AppView *iView);
+  void setContext(bContext *C);
 
   //soc
 	void init_options();

source/blender/freestyle/intern/blender_interface/FRS_freestyle.cpp

@@ -45,13 +45,13 @@ extern "C" {
 	//   Initialization 
 	//=======================================================
 
-	void FRS_initialize(bContext* C){
+	void FRS_initialize() {
 		
 		if( freestyle_is_initialized )
 			return;
 
 		pathconfig = new Config::Path;
-		controller = new Controller(C);
+		controller = new Controller();
 		view = new AppView;
 		controller->setView(view);
 			
@@ -60,6 +60,11 @@ extern "C" {
 		freestyle_is_initialized = 1;
 	}
 	
+	void FRS_set_context(bContext* C) {
+		cout << "FRS_set_context: context 0x" << C << " scene 0x" << CTX_data_scene(C) << endl;
+		controller->setContext(C);
+	}
+
 	void FRS_exit() {
 		delete pathconfig;
 		delete controller;
@@ -205,7 +210,7 @@ extern "C" {
 				displayed_layer_count(srl) > 0       )
 			{
 				cout << "\n----------------------------------------------------------" << endl;
-				cout << "|  "<< srl->name << endl;
+				cout << "|  " << (re->scene->id.name+2) << "|" << srl->name << endl;
 				cout << "----------------------------------------------------------" << endl;
 				
 				// prepare Freestyle:

source/blender/freestyle/intern/system/PythonInterpreter.h

@@ -51,9 +51,9 @@ class LIB_SYSTEM_EXPORT PythonInterpreter : public Interpreter
 {
  public:
 
-  PythonInterpreter(bContext* C) {
+  PythonInterpreter() {
     _language = "Python";
-	_context = C;
+	_context = 0;
     //Py_Initialize();
   }
 
@@ -61,6 +61,10 @@ class LIB_SYSTEM_EXPORT PythonInterpreter : public Interpreter
     //Py_Finalize();
   }
 
+  void setContext(bContext *C) {
+	_context = C;
+  }
+
   int interpretFile(const string& filename) {
 
 	initPath();

source/blender/windowmanager/intern/wm_files.c

@@ -89,8 +89,6 @@
 
 #include "GPU_draw.h"
 
-#include "FRS_freestyle.h"
-
 // XXX #include "BPY_extern.h"
 
 #include "WM_api.h"
@@ -270,8 +268,6 @@ void WM_read_file(bContext *C, char *name, ReportList *reports)
 			writeBlog();
 		}
 
-		FRS_initialize(C);
-
 // XXX		undo_editmode_clear();
 		BKE_reset_undo();
 		BKE_write_undo(C, "original");	/* save current state */
@@ -331,8 +327,6 @@ int WM_read_homefile(bContext *C, wmOperator *op)
 	strcpy(G.sce, scestr); /* restore */
 	
 	wm_init_userdef();
-	FRS_initialize(C);
-	
 	
 	/* When loading factory settings, the reset solid OpenGL lights need to be applied. */
 	GPU_default_lights();

source/creator/creator.c

@@ -548,6 +548,10 @@ int main(int argc, char **argv)
 		printf("Example: setenv BF_TIFF_LIB /usr/lib/libtiff.so\n");
 	}
 
+	/* initialize Freestyle */
+	FRS_initialize();
+	FRS_set_context(C);
+
 	/* OK we are ready for it */
 
 	for(a=1; a<argc; a++) {
@@ -842,7 +846,6 @@ int main(int argc, char **argv)
 			
 			if (G.background) {
 				int retval = BKE_read_file(C, argv[a], NULL, NULL);
-				FRS_initialize(C);
 				
 				/*we successfully loaded a blend file, get sure that
 				pointcache works */