== Grease Pencil ==

Grease Pencil is a tool which allows you to draw freehand in some views, allowing you to annotate/scribble over the contents of that view in either 2d or 3d. This facilitates many easier communication and planning abilities.

To use, simply enable it from the View menu (choose 'Grease Pencil...' and click 'Use Grease Pencil'). Then, click+drag using the left-mouse button and the shift-key held to draw a stroke.

For more information, check the following page on the wiki:
http://wiki.blender.org/index.php/User:Aligorith/247_Grease_Pencil

1 files changed, 32 insertions, 5 deletions

diff --git a/source/blender/src/editnode.c b/source/blender/src/editnode.c
index 4c7334c55e0..5c137e67c1a 100644
--- a/source/blender/src/editnode.c
+++ b/source/blender/src/editnode.c
@@ -82,6 +82,7 @@
 #include "BLI_storage_types.h"
 
 #include "BDR_editobject.h"
+#include "BDR_gpencil.h"
 
 #include "RE_pipeline.h"
 #include "IMB_imbuf_types.h"
@@ -2305,6 +2306,7 @@ static int node_uiDoBlocks(ScrArea *sa, short event)
 	SpaceNode *snode= sa->spacedata.first;
 	ListBase *lb= &sa->uiblocks;
 	ListBase listb= *lb;
+	uiBlock *block;
 	bNode *node;
 	rctf rect;
 	void *prev, *next;
@@ -2319,13 +2321,36 @@ static int node_uiDoBlocks(ScrArea *sa, short event)
 		return UI_NOTHING;
 	}
 	
+	/* evil hack: try to do grease-pencil floating panel (like for nodes) */
+	block= uiGetBlock("nodes_panel_gpencil", sa);
+	if (block) {
+		/* try to process events here... if failed, just carry on */
+			/* when there's menus, the prev pointer becomes zero! */
+		prev= ((struct Link *)block)->prev;
+		next= ((struct Link *)block)->next;
+		((struct Link *)block)->prev= NULL;
+		((struct Link *)block)->next= NULL;
+		
+		lb->first= lb->last= block;
+		retval= uiDoBlocks(lb, event, 1);
+		
+		((struct Link *)block)->prev= prev;
+		((struct Link *)block)->next= next;
+		
+		*lb= listb;
+		
+		/* if something happened, get the heck outta here */
+		if (retval != UI_NOTHING)
+			return retval;
+	}
+	
+	
 	rect.xmin -= 2.0f;
 	rect.ymin -= 2.0f;
 	rect.xmax = rect.xmin + 4.0f;
 	rect.ymax = rect.ymin + 4.0f;
 	
 	for(node= snode->edittree->nodes.first; node; node= node->next) {
-		uiBlock *block;
 		char str[32];
 		
 		/* retreive unique block name, see also drawnode.c */
@@ -2369,14 +2394,16 @@ void winqreadnodespace(ScrArea *sa, void *spacedata, BWinEvent *evt)
 	if(snode->nodetree==NULL) return;
 	
 	if(val) {
-
-		if( node_uiDoBlocks(sa, event)!=UI_NOTHING ) event= 0;	
-
+		if( node_uiDoBlocks(sa, event)!=UI_NOTHING ) event= 0;
+		
 		fromlib= (snode->id && snode->id->lib);
 		
 		switch(event) {
 		case LEFTMOUSE:
-			if(fromlib) {
+			if(gpencil_do_paint(sa)) {
+				return;
+			}
+			else if(fromlib) {
 				if(node_mouse_groupheader(snode)==0)
 					node_mouse_select(snode, event);
 			}