Another one for drag and drop:

Allow dropping image files from outside blender, or image datablocks from inside blender
to the compositing node editor, to add an image node.

Also small tweak: Only set 'path' properties on drops, if the drag->path isn't empty.

1 files changed, 49 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/space_node.c b/source/blender/editors/space_node/space_node.c
index 3bafcc25f6e..d22d1b4aa2d 100644
--- a/source/blender/editors/space_node/space_node.c
+++ b/source/blender/editors/space_node/space_node.c
@@ -53,6 +53,7 @@
 #include "WM_api.h"
 #include "WM_types.h"
 
+#include "UI_resources.h"
 #include "UI_view2d.h"
 
 #include "RNA_access.h"
@@ -263,6 +264,7 @@ static void node_buttons_area_draw(const bContext *C, ARegion *ar)
 static void node_main_area_init(wmWindowManager *wm, ARegion *ar)
 {
 	wmKeyMap *keymap;
+	ListBase *lb;
 	
 	UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_CUSTOM, ar->winx, ar->winy);
 	
@@ -272,6 +274,11 @@ static void node_main_area_init(wmWindowManager *wm, ARegion *ar)
 	
 	keymap= WM_keymap_find(wm->defaultconf, "Node Editor", SPACE_NODE, 0);
 	WM_event_add_keymap_handler_bb(&ar->handlers, keymap, &ar->v2d.mask, &ar->winrct);
+	
+	/* add drop boxes */
+	lb = WM_dropboxmap_find("Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
+	
+	WM_event_add_dropbox_handler(&ar->handlers, lb);
 }
 
 static void node_main_area_draw(const bContext *C, ARegion *ar)
@@ -281,6 +288,47 @@ static void node_main_area_draw(const bContext *C, ARegion *ar)
 	drawnodespace(C, ar, v2d);
 }
 
+
+/* ************* dropboxes ************* */
+
+static int node_drop_poll(bContext *C, wmDrag *drag, wmEvent *event)
+{
+	if(drag->type==WM_DRAG_ID) {
+		ID *id= (ID *)drag->poin;
+		if( GS(id->name)==ID_IM )
+			return 1;
+	}
+	else if(drag->type==WM_DRAG_PATH){
+		if(ELEM(drag->icon, 0, ICON_FILE_IMAGE))	/* rule might not work? */
+			return 1;
+	}
+	return 0;
+}
+
+static void node_id_path_drop_copy(wmDrag *drag, wmDropBox *drop)
+{
+	ID *id= (ID *)drag->poin;
+	
+	if(id) {
+		RNA_string_set(drop->ptr, "name", id->name+2);
+	}
+	if (drag->path[0]) {
+		RNA_string_set(drop->ptr, "path", drag->path);
+	}
+}
+
+/* this region dropbox definition */
+static void node_dropboxes(void)
+{
+	ListBase *lb= WM_dropboxmap_find("Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
+	
+	WM_dropbox_add(lb, "NODE_OT_add_file", node_drop_poll, node_id_path_drop_copy);
+	
+}
+
+/* ************* end drop *********** */
+
+
 /* add handlers, stuff you only do once or on area/region changes */
 static void node_header_area_init(wmWindowManager *wm, ARegion *ar)
 {
@@ -366,6 +414,7 @@ void ED_spacetype_node(void)
 	st->listener= node_area_listener;
 	st->refresh= node_area_refresh;
 	st->context= node_context;
+	st->dropboxes = node_dropboxes;
 	
 	/* regions: main window */
 	art= MEM_callocN(sizeof(ARegionType), "spacetype node region");