Grease Pencil - Storyboarding Features (merge from GPencil_EditStrokes branch)

This merge-commit brings in a number of new features and workflow/UI improvements for
working with Grease Pencil. While these were originally targetted at improving
the workflow for creating 3D storyboards in Blender using the Grease Pencil,
many of these changes should also prove useful in other workflows too.

The main highlights here are:
1) It is now possible to edit Grease Pencil strokes
   - Use D Tab, or toggle the "Enable Editing" toggles in the Toolbar/Properties regions
     to enter "Stroke Edit Mode". In this mode, many common editing tools will
     operate on Grease Pencil stroke points instead.
   - Tools implemented include Select, Select All/Border/Circle/Linked/More/Less,
     Grab, Rotate, Scale, Bend, Shear, To Sphere, Mirror, Duplicate, Delete.
   - Proportional Editing works when using the transform tools

2) Grease Pencil stroke settings can now be animated
   NOTE: Currently drivers don't work, but if time allows, this may still be
         added before the release.

3) Strokes can be drawn with "filled" interiors, using a separate set of
   colour/opacity settings to the ones used for the lines themselves.

   This makes use of OpenGL filled polys, which has the limitation of only
   being able to fill convex shapes. Some artifacts may be visible on concave
   shapes (e.g. pacman's mouth will be overdrawn)

4) "Volumetric Strokes" - An alternative drawing technique for stroke drawing
   has been added which draws strokes as a series of screen-aligned discs.

   While this was originally a partial experimental technique at getting better
   quality 3D lines, the effects possible using this technique were interesting
   enough to warrant making this a dedicated feature. Best results when partial
   opacity and large stroke widths are used.

5) Improved Onion Skinning Support
   - Different colours can be selected for the before/after ghosts. To do so,
     enable the "colour wheel" toggle beside the Onion Skinning toggle, and set
     the colours accordingly.
   - Different numbers of ghosts can be shown before/after the current frame

6) Grease Pencil datablocks are now attached to the scene by default instead of
   the active object.
   - For a long time, the object-attachment has proved to be quite problematic
     for users to keep track of. Now that this is done at scene level, it is
     easier for most users to use.
   - An exception for old files (and for any addons which may benefit from object
     attachment instead), is that if the active object has a Grease Pencil datablock,
     that will be used instead.
   - It is not currently possible to choose object-attachment from the UI, but
     it is simple to do this from the console instead, by doing:
     context.active_object.grease_pencil = bpy.data.grease_pencil["blah"]

7) Various UI Cleanups
   - The layers UI has been cleaned up to use a list instead of the nested-panels
     design. Apart from saving space, this is also much nicer to look at now.

   - The UI code is now all defined in Python. To support this, it has been necessary
     to add some new context properties to make it easier to access these settings.
     e.g. "gpencil_data" for the datablock
          "active_gpencil_layer" and "active_gpencil_frame" for active data,
          "editable_gpencil_strokes" for the strokes that can be edited

   - The "stroke placement/alignment" settings (previously "Drawing Settings" at the
     bottom of the Grease Pencil panel in the Properties Region) is now located in
     the toolbar. These were more toolsettings than properties for how GPencil got drawn.

   - "Use Sketching Sessions" has been renamed "Continuous Drawing", as per a
     suggestion for an earlier discussion on developer.blender.org

   - By default, the painting operator will wait for a mouse button to be pressed
     before it starts creating the stroke. This is to make it easier to include
     this operator in various toolbars/menus/etc.   To get it immediately starting
     (as when you hold down DKEy to draw), set "wait_for_input" to False.

   - GPencil Layers can be rearranged in the "Grease Pencil" mode of the Action Editor

   - Toolbar panels have been added to all the other editors which support these.

8) Pie menus for quick-access to tools
   A set of experimental pie menus has been included for quick access to many
   tools and settings. It is not necessary to use these to get things done,
   but they have been designed to help make certain common tasks easier.

   - Ctrl-D = The main pie menu. Reveals tools in a context sensitive and
              spatially stable manner.
   - D Q    = "Quick Settings" pie. This allows quick access to the active
              layer's settings. Notably, colours, thickness, and turning
              onion skinning on/off.

1 files changed, 240 insertions, 13 deletions

diff --git a/source/blender/makesrna/intern/rna_gpencil.c b/source/blender/makesrna/intern/rna_gpencil.c
index c4677710676..96d02016336 100644
--- a/source/blender/makesrna/intern/rna_gpencil.c
+++ b/source/blender/makesrna/intern/rna_gpencil.c
@@ -44,6 +44,8 @@
 
 #ifdef RNA_RUNTIME
 
+#include "BLI_math.h"
+
 #include "WM_api.h"
 
 #include "BKE_gpencil.h"
@@ -53,6 +55,16 @@ static void rna_GPencil_update(Main *UNUSED(bmain), Scene *UNUSED(scene), Pointe
 	WM_main_add_notifier(NC_GPENCIL | NA_EDITED, NULL);
 }
 
+static char *rna_GPencilLayer_path(PointerRNA *ptr)
+{
+	bGPDlayer *gpl = (bGPDlayer *)ptr->data;
+	char name_esc[sizeof(gpl->info) * 2];
+	
+	BLI_strescape(name_esc, gpl->info, sizeof(name_esc));
+	
+	return BLI_sprintfN("layers[\"%s\"]", name_esc);
+}
+
 static int rna_GPencilLayer_active_frame_editable(PointerRNA *ptr)
 {
 	bGPDlayer *gpl = (bGPDlayer *)ptr->data;
@@ -64,9 +76,36 @@ static int rna_GPencilLayer_active_frame_editable(PointerRNA *ptr)
 		return 1;
 }
 
-static PointerRNA rna_GPencil_active_layer_get(PointerRNA *ptr)
+static void rna_GPencilLayer_line_width_range(PointerRNA *ptr, int *min, int *max,
+                                              int *softmin, int *softmax)
 {
+	bGPDlayer *gpl = ptr->data;
+	
+	/* The restrictions on max width here are due to OpenGL on Windows not supporting
+	 * any widths greater than 10 (for driver-drawn) strokes/points.
+	 *
+	 * Although most of our 2D strokes also don't suffer from this restriction,
+	 * it's relatively hard to test for that. So, for now, only volumetric strokes
+	 * get to be larger...
+	 */
+	if (gpl->flag & GP_LAYER_VOLUMETRIC) {
+		*min = 1;
+		*max = 300;
+		
+		*softmin = 1;
+		*softmax = 100;
+	}
+	else {
+		*min = 1;
+		*max = 10;
+		
+		*softmin = 1;
+		*softmax = 10;
+	}
+}
 
+static PointerRNA rna_GPencil_active_layer_get(PointerRNA *ptr)
+{
 	bGPdata *gpd = ptr->id.data;
 
 	if (GS(gpd->id.name) == ID_GD) { /* why would this ever be not GD */
@@ -106,6 +145,33 @@ static void rna_GPencil_active_layer_set(PointerRNA *ptr, PointerRNA value)
 	}
 }
 
+static int rna_GPencil_active_layer_index_get(PointerRNA *ptr)
+{
+	bGPdata *gpd = (bGPdata *)ptr->id.data;
+	bGPDlayer *gpl = gpencil_layer_getactive(gpd);
+	
+	return BLI_findindex(&gpd->layers, gpl);
+}
+
+static void rna_GPencil_active_layer_index_set(PointerRNA *ptr, int value)
+{
+	bGPdata *gpd   = (bGPdata *)ptr->id.data;
+	bGPDlayer *gpl = BLI_findlink(&gpd->layers, value);
+
+	gpencil_layer_setactive(gpd, gpl);
+}
+
+static void rna_GPencil_active_layer_index_range(PointerRNA *ptr, int *min, int *max, int *softmin, int *softmax)
+{
+	bGPdata *gpd = (bGPdata *)ptr->id.data;
+
+	*min = 0;
+	*max = max_ii(0, BLI_listbase_count(&gpd->layers) - 1);
+
+	*softmin = *min;
+	*softmax = *max;
+}
+
 static void rna_GPencilLayer_info_set(PointerRNA *ptr, const char *value)
 {
 	bGPdata *gpd = ptr->id.data;
@@ -117,6 +183,63 @@ static void rna_GPencilLayer_info_set(PointerRNA *ptr, const char *value)
 	BLI_uniquename(&gpd->layers, gpl, DATA_("GP_Layer"), '.', offsetof(bGPDlayer, info), sizeof(gpl->info));
 }
 
+
+static bGPDstroke *rna_GPencil_stroke_point_find_stroke(const bGPdata *gpd, const bGPDspoint *pt, bGPDlayer **r_gpl, bGPDframe **r_gpf)
+{
+	bGPDlayer *gpl;
+	bGPDstroke *gps;
+	
+	/* sanity checks */
+	if (ELEM(NULL, gpd, pt)) {
+		return NULL;
+	}
+	
+	if (r_gpl) *r_gpl = NULL;
+	if (r_gpf) *r_gpf = NULL;
+	
+	/* there's no faster alternative than just looping over everything... */
+	for (gpl = gpd->layers.first; gpl; gpl = gpl->next) {
+		if (gpl->actframe) {
+			for (gps = gpl->actframe->strokes.first; gps; gps = gps->next) {
+				if ((pt >= gps->points) && (pt < &gps->points[gps->totpoints])) {
+					/* found it */
+					if (r_gpl) *r_gpl = gpl;
+					if (r_gpf) *r_gpf = gpl->actframe;
+					
+					return gps;
+				}
+			}
+		}
+	}
+	
+	/* didn't find it */
+	return NULL;
+}
+
+static void rna_GPencil_stroke_point_select_set(PointerRNA *ptr, const int value)
+{
+	bGPdata *gpd = ptr->id.data;
+	bGPDspoint *pt = ptr->data;
+	bGPDstroke *gps = NULL;
+	
+	/* Ensure that corresponding stroke is set 
+	 * - Since we don't have direct access, we're going to have to search
+	 * - We don't apply selection value unless we can find the corresponding
+	 *   stroke, so that they don't get out of sync
+	 */
+	gps = rna_GPencil_stroke_point_find_stroke(gpd, pt, NULL, NULL);
+	if (gps) {
+		/* Set the new selection state for the point */
+		if (value)
+			pt->flag |= GP_SPOINT_SELECT;
+		else
+			pt->flag &= ~GP_SPOINT_SELECT;
+		
+		/* Check if the stroke should be selected or not... */
+		gpencil_stroke_sync_selection(gps);
+	}
+}
+
 static void rna_GPencil_stroke_point_add(bGPDstroke *stroke, int count)
 {
 	if (count > 0) {
@@ -180,6 +303,27 @@ static void rna_GPencil_stroke_remove(bGPDframe *frame, ReportList *reports, Poi
 	WM_main_add_notifier(NC_GPENCIL | NA_EDITED, NULL);
 }
 
+static void rna_GPencil_stroke_select_set(PointerRNA *ptr, const int value)
+{
+	bGPDstroke *gps = ptr->data;
+	bGPDspoint *pt;
+	int i;
+	
+	/* set new value */
+	if (value)
+		gps->flag |= GP_STROKE_SELECT;
+	else
+		gps->flag &= ~GP_STROKE_SELECT;
+		
+	/* ensure that the stroke's points are selected in the same way */
+	for (i = 0, pt = gps->points; i < gps->totpoints; i++, pt++) {
+		if (value)
+			pt->flag |= GP_SPOINT_SELECT;
+		else
+			pt->flag &= ~GP_SPOINT_SELECT;
+	}
+}
+
 static bGPDframe *rna_GPencil_frame_new(bGPDlayer *layer, ReportList *reports, int frame_number)
 {
 	bGPDframe *frame;
@@ -291,6 +435,12 @@ static void rna_def_gpencil_stroke_point(BlenderRNA *brna)
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Pressure", "Pressure of tablet at point when drawing it");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "select", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_SPOINT_SELECT);
+	RNA_def_property_boolean_funcs(prop, NULL, "rna_GPencil_stroke_point_select_set");
+	RNA_def_property_ui_text(prop, "Select", "Point is selected for viewport editing");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 }
 
 static void rna_def_gpencil_stroke_points_api(BlenderRNA *brna, PropertyRNA *cprop)
@@ -338,12 +488,19 @@ static void rna_def_gpencil_stroke(BlenderRNA *brna)
 	RNA_def_property_struct_type(prop, "GPencilStrokePoint");
 	RNA_def_property_ui_text(prop, "Stroke Points", "Stroke data points");
 	rna_def_gpencil_stroke_points_api(brna, prop);
-
+	
+	/* Settings */
 	prop = RNA_def_property(srna, "draw_mode", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_bitflag_sdna(prop, NULL, "flag");
 	RNA_def_property_enum_items(prop, stroke_draw_mode_items);
 	RNA_def_property_ui_text(prop, "Draw Mode", "");
 	RNA_def_property_update(prop, 0, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "select", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_STROKE_SELECT);
+	RNA_def_property_boolean_funcs(prop, NULL, "rna_GPencil_stroke_select_set");
+	RNA_def_property_ui_text(prop, "Select", "Stroke is selected for viewport editing");
+	RNA_def_property_update(prop, 0, "rna_GPencil_update");
 }
 
 static void rna_def_gpencil_strokes_api(BlenderRNA *brna, PropertyRNA *cprop)
@@ -455,6 +612,7 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	srna = RNA_def_struct(brna, "GPencilLayer", NULL);
 	RNA_def_struct_sdna(srna, "bGPDlayer");
 	RNA_def_struct_ui_text(srna, "Grease Pencil Layer", "Collection of related sketches");
+	RNA_def_struct_path_func(srna, "rna_GPencilLayer_path");
 	
 	/* Name */
 	prop = RNA_def_property(srna, "info", PROP_STRING, PROP_NONE);
@@ -477,7 +635,14 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	RNA_def_property_editable_func(prop, "rna_GPencilLayer_active_frame_editable");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, NULL);
 
-	/* Drawing Color */
+	/* Draw Style */
+	// TODO: replace these with a "draw type" combo (i.e. strokes only, filled strokes, strokes + fills, volumetric)?
+	prop = RNA_def_property(srna, "use_volumetric_strokes", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_LAYER_VOLUMETRIC);
+	RNA_def_property_ui_text(prop, "Volumetric Strokes", "Draw strokes as a series of circular blobs, resulting in a volumetric effect");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	/* Stroke Drawing Color */
 	prop = RNA_def_property(srna, "color", PROP_FLOAT, PROP_COLOR_GAMMA);
 	RNA_def_property_array(prop, 3);
 	RNA_def_property_range(prop, 0.0f, 1.0f);
@@ -486,14 +651,29 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	
 	prop = RNA_def_property(srna, "alpha", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "color[3]");
-	RNA_def_property_range(prop, 0.3, 1.0f);
+	RNA_def_property_range(prop, 0.0, 1.0f);
 	RNA_def_property_ui_text(prop, "Opacity", "Layer Opacity");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
+	/* Fill Drawing Color */
+	prop = RNA_def_property(srna, "fill_color", PROP_FLOAT, PROP_COLOR_GAMMA);
+	RNA_def_property_float_sdna(prop, NULL, "fill");
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Fill Color", "Color for filling region bounded by each stroke");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "fill_alpha", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_float_sdna(prop, NULL, "fill[3]");
+	RNA_def_property_range(prop, 0.0, 1.0f);
+	RNA_def_property_ui_text(prop, "Fill Opacity", "Opacity for filling region bounded by each stroke");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
 	/* Line Thickness */
 	prop = RNA_def_property(srna, "line_width", PROP_INT, PROP_PIXEL);
 	RNA_def_property_int_sdna(prop, NULL, "thickness");
-	RNA_def_property_range(prop, 1, 10);
+	//RNA_def_property_range(prop, 1, 10); /* 10 px limit comes from Windows OpenGL limits for natively-drawn strokes */
+	RNA_def_property_int_funcs(prop, NULL, NULL, "rna_GPencilLayer_line_width_range");
 	RNA_def_property_ui_text(prop, "Thickness", "Thickness of strokes (in pixels)");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
@@ -503,29 +683,59 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Onion Skinning", "Ghost frames on either side of frame");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
-	prop = RNA_def_property(srna, "ghost_range_max", PROP_INT, PROP_NONE);
+	prop = RNA_def_property(srna, "ghost_before_range", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "gstep");
 	RNA_def_property_range(prop, 0, 120);
-	RNA_def_property_ui_text(prop, "Max Ghost Range",
-	                         "Maximum number of frames on either side of the active frame to show "
-	                         "(0 = show the 'first' available sketch on either side)");
+	RNA_def_property_ui_text(prop, "Frames Before",
+	                         "Maximum number of frames to show before current frame "
+	                         "(0 = show only the previous sketch)");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "ghost_after_range", PROP_INT, PROP_NONE);
+	RNA_def_property_int_sdna(prop, NULL, "gstep_next");
+	RNA_def_property_range(prop, 0, 120);
+	RNA_def_property_ui_text(prop, "Frames After",
+	                         "Maximum number of frames to show after current frame "
+	                         "(0 = show only the next sketch)");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "use_ghost_custom_colors", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_LAYER_GHOST_PREVCOL | GP_LAYER_GHOST_NEXTCOL);
+	RNA_def_property_ui_text(prop, "Use Custom Ghost Colors", "Use custom colors for ghost frames");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "before_color", PROP_FLOAT, PROP_COLOR_GAMMA);
+	RNA_def_property_float_sdna(prop, NULL, "gcolor_prev");
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Before Color", "Base color for ghosts before the active frame");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+	
+	prop = RNA_def_property(srna, "after_color", PROP_FLOAT, PROP_COLOR_GAMMA);
+	RNA_def_property_float_sdna(prop, NULL, "gcolor_next");
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "After Color", "Base color for ghosts after the active frame");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
 	/* Flags */
 	prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_LAYER_HIDE);
+	RNA_def_property_ui_icon(prop, ICON_RESTRICT_VIEW_OFF, 1);
 	RNA_def_property_ui_text(prop, "Hide", "Set layer Visibility");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
 	prop = RNA_def_property(srna, "lock", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_LAYER_LOCKED);
+	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
 	RNA_def_property_ui_text(prop, "Locked", "Protect layer from further editing and/or frame changes");
-	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, NULL);
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
 	prop = RNA_def_property(srna, "lock_frame", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_LAYER_FRAMELOCK);
+	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
 	RNA_def_property_ui_text(prop, "Frame Locked", "Lock current frame displayed by layer");
-	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, NULL);
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 
 	/* expose as layers.active */
 #if 0
@@ -539,7 +749,7 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	prop = RNA_def_property(srna, "select", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_LAYER_SELECT);
 	RNA_def_property_ui_text(prop, "Select", "Layer is selected for editing in the Dope Sheet");
-	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, NULL);
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 	
 	/* XXX keep this option? */
 	prop = RNA_def_property(srna, "show_points", PROP_BOOLEAN, PROP_NONE);
@@ -592,6 +802,14 @@ static void rna_def_gpencil_layers_api(BlenderRNA *brna, PropertyRNA *cprop)
 	RNA_def_property_pointer_funcs(prop, "rna_GPencil_active_layer_get", "rna_GPencil_active_layer_set", NULL, NULL);
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_ui_text(prop, "Active Layer", "Active grease pencil layer");
+	
+	prop = RNA_def_property(srna, "active_index", PROP_INT, PROP_UNSIGNED);
+	
+	RNA_def_property_int_funcs(prop,
+	                           "rna_GPencil_active_layer_index_get", 
+	                           "rna_GPencil_active_layer_index_set", 
+	                           "rna_GPencil_active_layer_index_range");
+	RNA_def_property_ui_text(prop, "Active Layer Index", "Index of active grease pencil layer");
 }
 
 static void rna_def_gpencil_data(BlenderRNA *brna)
@@ -620,6 +838,9 @@ static void rna_def_gpencil_data(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Layers", "");
 	rna_def_gpencil_layers_api(brna, prop);
 	
+	/* Animation Data */
+	rna_def_animdata_common(srna);
+	
 	/* Flags */
 	prop = RNA_def_property(srna, "draw_mode", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_bitflag_sdna(prop, NULL, "flag");
@@ -631,7 +852,13 @@ static void rna_def_gpencil_data(BlenderRNA *brna)
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_DATA_DEPTH_STROKE_ENDPOINTS);
 	RNA_def_property_ui_text(prop, "Only Endpoints", "Only use the first and last parts of the stroke for snapping");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, NULL);
-
+	
+	prop = RNA_def_property(srna, "use_stroke_edit_mode", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_DATA_STROKE_EDITMODE);
+	RNA_def_property_ui_text(prop, "Stroke Edit Mode", "Enable alternative keymap to make editing stroke points easier");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA | ND_GPENCIL_EDITMODE, "rna_GPencil_update");
+	
+	/* API Functions */
 	func = RNA_def_function(srna, "clear", "rna_GPencil_clear");
 	RNA_def_function_ui_description(func, "Remove all the grease pencil data");
 }