Revision: 41958
          
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=41958
Author:   campbellbarton
Date:     2011-11-18 08:42:44 +0000 (Fri, 18 Nov 2011)
Log Message:
-----------
edits to 41957, main changes to render layer removal.
- report an error if the layer can't be removed
- check the render layer is in the list before removing

Modified Paths:
--------------
    trunk/blender/source/blender/blenkernel/intern/scene.c
    trunk/blender/source/blender/makesrna/intern/rna_scene.c

Modified: trunk/blender/source/blender/blenkernel/intern/scene.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/scene.c      2011-11-18 
07:11:54 UTC (rev 41957)
+++ trunk/blender/source/blender/blenkernel/intern/scene.c      2011-11-18 
08:42:44 UTC (rev 41958)
@@ -1090,13 +1090,12 @@
 SceneRenderLayer *scene_add_render_layer(Scene *sce, const char *name)
 {
        SceneRenderLayer *srl;
-//     int tot= 1 + BLI_countlist(&sce->r.layers);
 
        if(!name)
                name= "RenderLayer";
 
        srl= MEM_callocN(sizeof(SceneRenderLayer), "new render layer");
-       strcpy(srl->name, name);
+       BLI_strncpy(srl->name, name, sizeof(srl->name));
        BLI_uniquename(&sce->r.layers, srl, "RenderLayer", '.', 
offsetof(SceneRenderLayer, name), sizeof(srl->name));
        BLI_addtail(&sce->r.layers, srl);
 
@@ -1108,20 +1107,27 @@
        return srl;
 }
 
-int scene_remove_render_layer(Main *main, Scene *scene, SceneRenderLayer *srl)
+int scene_remove_render_layer(Main *bmain, Scene *scene, SceneRenderLayer *srl)
 {
+       const int act= BLI_findindex(&scene->r.layers, srl);
        Scene *sce;
-       int act= BLI_findindex(&scene->r.layers, srl);
 
-       if(BLI_countlist(&scene->r.layers) <= 1)
+       if (act == -1) {
                return 0;
+       }
+       else if ( (scene->r.layers.first == scene->r.layers.last) &&
+                 (scene->r.layers.first == srl))
+       {
+               /* ensure 1 layer is kept */
+               return 0;
+       }
 
        BLI_remlink(&scene->r.layers, srl);
        MEM_freeN(srl);
 
        scene->r.actlay= 0;
 
-       for(sce = main->scene.first; sce; sce = sce->id.next) {
+       for(sce = bmain->scene.first; sce; sce = sce->id.next) {
                if(sce->nodetree) {
                        bNode *node;
                        for(node = sce->nodetree->nodes.first; node; node = 
node->next) {

Modified: trunk/blender/source/blender/makesrna/intern/rna_scene.c
===================================================================
--- trunk/blender/source/blender/makesrna/intern/rna_scene.c    2011-11-18 
07:11:54 UTC (rev 41957)
+++ trunk/blender/source/blender/makesrna/intern/rna_scene.c    2011-11-18 
08:42:44 UTC (rev 41958)
@@ -734,7 +734,7 @@
        if (index != -1) rd->actlay= index;
 }
 
-static SceneRenderLayer *rna_RenderLayer_add(ID *id, RenderData *UNUSED(rd), 
const char *name)
+static SceneRenderLayer *rna_RenderLayer_new(ID *id, RenderData *UNUSED(rd), 
const char *name)
 {
        Scene *scene= (Scene *)id;
        SceneRenderLayer *srl= scene_add_render_layer(scene, name);
@@ -744,13 +744,16 @@
        return srl;
 }
 
-static void rna_RenderLayer_remove(ID *id, RenderData *UNUSED(rd), Main 
*bmain, SceneRenderLayer *srl)
+static void rna_RenderLayer_remove(ID *id, RenderData *UNUSED(rd), Main 
*bmain, ReportList *reports, SceneRenderLayer *srl)
 {
        Scene *scene= (Scene *)id;
 
-       scene_remove_render_layer(bmain, scene, srl);
-
-       WM_main_add_notifier(NC_SCENE|ND_RENDER_OPTIONS, NULL);
+       if (!scene_remove_render_layer(bmain, scene, srl)) {
+               BKE_reportf(reports, RPT_ERROR, "RenderLayer '%s' could not be 
removed from scene '%s'", srl->name, scene->id.name+2);
+       }
+       else {
+               WM_main_add_notifier(NC_SCENE|ND_RENDER_OPTIONS, NULL);
+       }
 }
 
 static void rna_RenderSettings_engine_set(PointerRNA *ptr, int value)
@@ -2228,17 +2231,17 @@
        RNA_def_property_ui_text(prop, "Active Render Layer", "Active Render 
Layer");
        RNA_def_property_update(prop, NC_SCENE|ND_RENDER_OPTIONS, NULL);
 
-       func= RNA_def_function(srna, "new", "rna_RenderLayer_add");
+       func= RNA_def_function(srna, "new", "rna_RenderLayer_new");
        RNA_def_function_ui_description(func, "Add a render layer to scene");
        RNA_def_function_flag(func, FUNC_USE_SELF_ID);
        parm= RNA_def_string(func, "name", "RenderLayer", 0, "", "New name for 
the marker (not unique)");
        RNA_def_property_flag(parm, PROP_REQUIRED);
-       parm= RNA_def_pointer(func, "render_layer", "SceneRenderLayer", "", 
"Newly created render layer");
+       parm= RNA_def_pointer(func, "result", "SceneRenderLayer", "", "Newly 
created render layer");
        RNA_def_function_return(func, parm);
 
        func= RNA_def_function(srna, "remove", "rna_RenderLayer_remove");
        RNA_def_function_ui_description(func, "Remove a render layer");
-       RNA_def_function_flag(func, FUNC_USE_MAIN|FUNC_USE_SELF_ID);
+       RNA_def_function_flag(func, 
FUNC_USE_MAIN|FUNC_USE_REPORTS|FUNC_USE_SELF_ID);
        parm= RNA_def_pointer(func, "layer", "SceneRenderLayer", "", "Timeline 
marker to remove");
        RNA_def_property_flag(parm, PROP_REQUIRED|PROP_NEVER_NULL);
 }

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