New Grease Pencil object for 2D animation

This commit merge the full development done in greasepencil-object branch and include mainly the following features.

- New grease pencil object.
- New drawing engine.
- New grease pencil modes Draw/Sculpt/Edit and Weight Paint.
- New brushes for grease pencil.
- New modifiers for grease pencil.
- New shaders FX.
- New material system (replace old palettes and colors).
- Split of annotations (old grease pencil) and new grease pencil object.
- UI adapted to blender 2.8.

You can get more info here:

https://code.blender.org/2017/12/drawing-2d-animation-in-blender-2-8/
https://code.blender.org/2018/07/grease-pencil-status-update/

This is the result of nearly two years of development and I want thanks firstly the other members of the grease pencil team: Daniel M. Lara, Matias Mendiola and Joshua Leung for their support, ideas and to keep working in the project all the time, without them this project had been impossible.

Also, I want thanks other Blender developers for their help, advices and to be there always to help me, and specially to Clément Foucault, Dalai Felinto, Pablo Vázquez and Campbell Barton.

1 files changed, 237 insertions, 548 deletions

diff --git a/release/scripts/startup/bl_ui/properties_grease_pencil_common.py b/release/scripts/startup/bl_ui/properties_grease_pencil_common.py
index 55b798d103a..252f87d369f 100644
--- a/release/scripts/startup/bl_ui/properties_grease_pencil_common.py
+++ b/release/scripts/startup/bl_ui/properties_grease_pencil_common.py
@@ -18,45 +18,30 @@
 
 # <pep8 compliant>
 
-
+import bpy
 from bpy.types import Menu, UIList
 from bpy.app.translations import pgettext_iface as iface_
 
 
 def gpencil_stroke_placement_settings(context, layout):
     if context.space_data.type == 'VIEW_3D':
-        propname = "gpencil_stroke_placement_view3d"
+        propname = "annotation_stroke_placement_view3d"
     elif context.space_data.type == 'SEQUENCE_EDITOR':
-        propname = "gpencil_stroke_placement_sequencer_preview"
+        propname = "annotation_stroke_placement_sequencer_preview"
     elif context.space_data.type == 'IMAGE_EDITOR':
-        propname = "gpencil_stroke_placement_image_editor"
+        propname = "annotation_stroke_placement_image_editor"
     else:
-        propname = "gpencil_stroke_placement_view2d"
+        propname = "annotation_stroke_placement_view2d"
 
     ts = context.tool_settings
 
     col = layout.column(align=True)
 
-    col.label(text="Stroke Placement:")
-
-    row = col.row(align=True)
-    row.prop_enum(ts, propname, 'VIEW')
-    row.prop_enum(ts, propname, 'CURSOR')
-
-    if context.space_data.type == 'VIEW_3D':
+    if context.space_data.type != 'VIEW_3D':
+        col.label(text="Stroke Placement:")
         row = col.row(align=True)
-        row.prop_enum(ts, propname, 'SURFACE')
-        row.prop_enum(ts, propname, 'STROKE')
-
-        row = col.row(align=False)
-        row.active = getattr(ts, propname) in {'SURFACE', 'STROKE'}
-        row.prop(ts, "use_gpencil_stroke_endpoints")
-
-        if context.scene.tool_settings.gpencil_stroke_placement_view3d == 'CURSOR':
-            row = col.row(align=True)
-            row.label("Lock axis:")
-            row = col.row(align=True)
-            row.prop(ts.gpencil_sculpt, "lockaxis", expand=True)
+        row.prop_enum(ts, propname, 'VIEW')
+        row.prop_enum(ts, propname, 'CURSOR', text="Cursor")
 
 
 def gpencil_active_brush_settings_simple(context, layout):
@@ -73,7 +58,7 @@ def gpencil_active_brush_settings_simple(context, layout):
     row.operator_menu_enum("gpencil.brush_change", "brush", text="", icon='BRUSH_DATA')
     row.prop(brush, "name", text="")
 
-    col.prop(brush, "line_width", slider=True)
+    col.prop(brush, "size", slider=True)
     row = col.row(align=True)
     row.prop(brush, "use_random_pressure", text="", icon='RNDCURVE')
     row.prop(brush, "pen_sensitivity_factor", slider=True)
@@ -90,6 +75,7 @@ def gpencil_active_brush_settings_simple(context, layout):
     row.prop(brush, "angle_factor", text="Factor", slider=True)
 
 
+# XXX: To be replaced with active tools
 class GreasePencilDrawingToolsPanel:
     # subclass must set
     # bl_space_type = 'IMAGE_EDITOR'
@@ -99,8 +85,7 @@ class GreasePencilDrawingToolsPanel:
 
     @classmethod
     def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
+        return True
 
     @staticmethod
     def draw(self, context):
@@ -113,12 +98,12 @@ class GreasePencilDrawingToolsPanel:
 
         col.label(text="Draw:")
         row = col.row(align=True)
-        row.operator("gpencil.draw", icon='GREASEPENCIL', text="Draw").mode = 'DRAW'
-        row.operator("gpencil.draw", icon='FORCE_CURVE', text="Erase").mode = 'ERASER'  # XXX: Needs a dedicated icon
+        row.operator("gpencil.annotate", icon='GREASEPENCIL', text="Draw").mode = 'DRAW'
+        row.operator("gpencil.annotate", icon='FORCE_CURVE', text="Erase").mode = 'ERASER'  # XXX: Needs a dedicated icon
 
         row = col.row(align=True)
-        row.operator("gpencil.draw", icon='LINE_DATA', text="Line").mode = 'DRAW_STRAIGHT'
-        row.operator("gpencil.draw", icon='MESH_DATA', text="Poly").mode = 'DRAW_POLY'
+        row.operator("gpencil.annotate", icon='LINE_DATA', text="Line").mode = 'DRAW_STRAIGHT'
+        row.operator("gpencil.annotate", icon='MESH_DATA', text="Poly").mode = 'DRAW_POLY'
 
         col.separator()
 
@@ -126,15 +111,15 @@ class GreasePencilDrawingToolsPanel:
         sub.operator("gpencil.blank_frame_add", icon='NEW')
         sub.operator("gpencil.active_frames_delete_all", icon='X', text="Delete Frame(s)")
 
-        sub = col.column(align=True)
-        sub.prop(context.tool_settings, "use_gpencil_additive_drawing", text="Additive Drawing")
-        sub.prop(context.tool_settings, "use_gpencil_continuous_drawing", text="Continuous Drawing")
-        sub.prop(context.tool_settings, "use_gpencil_draw_onback", text="Draw on Back")
+        #sub = col.column(align=True)
+        #sub.prop(context.tool_settings, "use_gpencil_additive_drawing", text="Additive Drawing")
+        #sub.prop(context.tool_settings, "use_gpencil_continuous_drawing", text="Continuous Drawing")
+        #sub.prop(context.tool_settings, "use_gpencil_draw_onback", text="Draw on Back")
 
         col.separator()
         col.separator()
 
-        if context.space_data.type in {'VIEW_3D', 'CLIP_EDITOR'}:
+        if context.space_data.type in {'CLIP_EDITOR'}:
             col.separator()
             col.label("Data Source:")
             row = col.row(align=True)
@@ -143,8 +128,8 @@ class GreasePencilDrawingToolsPanel:
             elif is_clip_editor:
                 row.prop(context.space_data, "grease_pencil_source", expand=True)
 
-        col.separator()
-        col.separator()
+        #col.separator()
+        #col.separator()
 
         gpencil_stroke_placement_settings(context, col)
 
@@ -157,28 +142,16 @@ class GreasePencilDrawingToolsPanel:
             col = layout.column(align=True)
             col.prop(gpd, "use_stroke_edit_mode", text="Enable Editing", icon='EDIT', toggle=True)
 
-        if is_3d_view:
-            col.separator()
-            col.separator()
-
-            col.label(text="Tools:")
-            col.operator_menu_enum("gpencil.convert", text="Convert to Geometry...", property="type")
-            col.operator("view3d.ruler")
-
 
 class GreasePencilStrokeEditPanel:
     # subclass must set
     # bl_space_type = 'IMAGE_EDITOR'
     bl_label = "Edit Strokes"
-    bl_category = "Grease Pencil"
+    bl_category = "Tools"
     bl_region_type = 'TOOLS'
-    bl_options = {'DEFAULT_CLOSED'}
 
     @classmethod
     def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
-
         if context.gpencil_data is None:
             return False
 
@@ -204,7 +177,7 @@ class GreasePencilStrokeEditPanel:
             col.operator("gpencil.select_linked")
             col.operator("gpencil.select_more")
             col.operator("gpencil.select_less")
-            col.operator("gpencil.palettecolor_select")
+            col.operator("gpencil.select_alternate")
 
         layout.label(text="Edit:")
         row = layout.row(align=True)
@@ -228,258 +201,124 @@ class GreasePencilStrokeEditPanel:
 
             layout.separator()
 
-        col = layout.column(align=True)
-        col.operator("transform.bend", text="Bend")
-        col.operator("transform.mirror", text="Mirror")
-        col.operator("transform.shear", text="Shear")
-        col.operator("transform.tosphere", text="To Sphere")
-
         layout.separator()
         col = layout.column(align=True)
         col.operator_menu_enum("gpencil.stroke_arrange", text="Arrange Strokes...", property="direction")
         col.operator("gpencil.stroke_change_color", text="Move to Color")
 
-        if is_3d_view:
-            layout.separator()
-
         layout.separator()
         col = layout.column(align=True)
         col.operator("gpencil.stroke_subdivide", text="Subdivide")
-        col.operator("gpencil.stroke_join", text="Join").type = 'JOIN'
-        col.operator("gpencil.stroke_join", text="Join & Copy").type = 'JOINCOPY'
-        col.operator("gpencil.stroke_flip", text="Flip Direction")
-
-        gpd = context.gpencil_data
-        if gpd:
-            col.prop(gpd, "show_stroke_direction", text="Show Directions")
-
-        if is_3d_view:
-            layout.separator()
-            layout.operator_menu_enum("gpencil.reproject", text="Reproject Strokes...", property="type")
-
-
-class GreasePencilInterpolatePanel:
-    bl_space_type = 'VIEW_3D'
-    bl_label = "Interpolate"
-    bl_category = "Grease Pencil"
-    bl_region_type = 'TOOLS'
-    bl_options = {'DEFAULT_CLOSED'}
-
-    @classmethod
-    def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
-
-        if context.gpencil_data is None:
-            return False
-        elif context.space_data.type != 'VIEW_3D':
-            return False
-
-        gpd = context.gpencil_data
-        return bool(context.editable_gpencil_strokes) and bool(gpd.use_stroke_edit_mode)
-
-    @staticmethod
-    def draw(self, context):
-        layout = self.layout
-        settings = context.tool_settings.gpencil_interpolate
-
-        col = layout.column(align=True)
-        col.operator("gpencil.interpolate", text="Interpolate")
-        col.operator("gpencil.interpolate_sequence", text="Sequence")
-        col.operator("gpencil.interpolate_reverse", text="Remove Breakdowns")
-
-        col = layout.column(align=True)
-        col.label(text="Options:")
-        col.prop(settings, "interpolate_all_layers")
-        col.prop(settings, "interpolate_selected_only")
-
-        col = layout.column(align=True)
-        col.label(text="Sequence Options:")
-        col.prop(settings, "type")
-        if settings.type == 'CUSTOM':
-            box = layout.box()
-            # TODO: Options for loading/saving curve presets?
-            box.template_curve_mapping(settings, "interpolation_curve", brush=True)
-        elif settings.type != 'LINEAR':
-            col.prop(settings, "easing")
-
-            if settings.type == 'BACK':
-                layout.prop(settings, "back")
-            elif setting.type == 'ELASTIC':
-                sub = layout.column(align=True)
-                sub.prop(settings, "amplitude")
-                sub.prop(settings, "period")
-
-
-class GreasePencilBrushPanel:
-    # subclass must set
-    # bl_space_type = 'IMAGE_EDITOR'
-    bl_label = "Drawing Brushes"
-    bl_category = "Grease Pencil"
-    bl_region_type = 'TOOLS'
-
-    @classmethod
-    def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
+        row = col.row(align=True)
+        row.operator("gpencil.stroke_simplify_fixed", text="Simplify")
+        row.operator("gpencil.stroke_simplify", text="Adaptative")
 
-    @staticmethod
-    def draw(self, context):
-        layout = self.layout
+        col.separator()
 
-        row = layout.row()
-        col = row.column()
-        ts = context.scene.tool_settings
-        if len(ts.gpencil_brushes) >= 2:
-            brows = 3
-        else:
-            brows = 2
-        col.template_list("GPENCIL_UL_brush", "", ts, "gpencil_brushes", ts.gpencil_brushes, "active_index", rows=brows)
+        row = col.row(align=True)
+        row.operator("gpencil.stroke_join", text="Join").type = 'JOIN'
+        row.operator("gpencil.stroke_join", text="& Copy").type = 'JOINCOPY'
 
-        col = row.column()
+        col.operator("gpencil.stroke_flip", text="Flip Direction")
 
-        sub = col.column(align=True)
-        sub.operator("gpencil.brush_add", icon='ZOOMIN', text="")
-        sub.operator("gpencil.brush_remove", icon='ZOOMOUT', text="")
-        sub.menu("GPENCIL_MT_brush_specials", icon='DOWNARROW_HLT', text="")
-        brush = context.active_gpencil_brush
-        if brush:
-            if len(ts.gpencil_brushes) > 1:
-                col.separator()
-                sub = col.column(align=True)
-                sub.operator("gpencil.brush_move", icon='TRIA_UP', text="").type = 'UP'
-                sub.operator("gpencil.brush_move", icon='TRIA_DOWN', text="").type = 'DOWN'
+        if is_3d_view:
+            layout.separator()
 
-        # Brush details
-        if brush is not None:
-            row = layout.row()
-            row.prop(brush, "line_width")
-            row = layout.row(align=True)
-            row.prop(brush, "use_random_pressure", text="", icon='RNDCURVE')
-            row.prop(brush, "pen_sensitivity_factor", slider=True)
-            row.prop(brush, "use_pressure", text="", icon='STYLUS_PRESSURE')
-            row = layout.row(align=True)
-            row.prop(brush, "use_random_strength", text="", icon='RNDCURVE')
-            row.prop(brush, "strength", slider=True)
-            row.prop(brush, "use_strength_pressure", text="", icon='STYLUS_PRESSURE')
-            row = layout.row(align=True)
-            row.prop(brush, "random_press", slider=True)
+            col = layout.column(align=True)
+            col.operator_menu_enum("gpencil.stroke_separate", text="Separate...", property="mode")
+            col.operator("gpencil.stroke_split", text="Split")
 
-            row = layout.row(align=True)
-            row.prop(brush, "jitter", slider=True)
-            row.prop(brush, "use_jitter_pressure", text="", icon='STYLUS_PRESSURE')
-            row = layout.row()
-            row.prop(brush, "angle", slider=True)
-            row.prop(brush, "angle_factor", text="Factor", slider=True)
-
-            box = layout.box()
-            col = box.column(align=True)
-            col.label(text="Stroke Quality:")
-            col.prop(brush, "pen_smooth_factor")
-            col.prop(brush, "pen_smooth_steps")
-            col.separator()
-            row = col.row(align=False)
-            row.prop(brush, "pen_subdivision_steps")
-            row.prop(brush, "random_subdiv", text="Randomness", slider=True)
+            col = layout.column(align=True)
+            col.label(text="Cleanup:")
+            col.operator_menu_enum("gpencil.reproject", text="Reproject Strokes...", property="type")
+            col.operator_menu_enum("gpencil.frame_clean_fill", text="Clean Boundary Strokes...", property="mode")
 
 
 class GreasePencilStrokeSculptPanel:
     # subclass must set
     # bl_space_type = 'IMAGE_EDITOR'
     bl_label = "Sculpt Strokes"
-    bl_category = "Grease Pencil"
-    bl_region_type = 'TOOLS'
-
-    @classmethod
-    def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
-
-        if context.gpencil_data is None:
-            return False
-
-        gpd = context.gpencil_data
-        return bool(context.editable_gpencil_strokes) and bool(gpd.use_stroke_edit_mode)
+    bl_category = "Tools"
 
     @staticmethod
     def draw(self, context):
         layout = self.layout
+        layout.use_property_split = True
+        layout.use_property_decorate = False
 
         settings = context.tool_settings.gpencil_sculpt
         tool = settings.tool
         brush = settings.brush
 
-        layout.column().prop(settings, "tool")
+        layout.template_icon_view(settings, "tool", show_labels=True)
 
-        col = layout.column()
-        col.prop(brush, "size", slider=True)
-        row = col.row(align=True)
+        layout.prop(brush, "size", slider=True)
+        row = layout.row(align=True)
         row.prop(brush, "strength", slider=True)
         row.prop(brush, "use_pressure_strength", text="")
-        col.prop(brush, "use_falloff")
-        if tool in {'SMOOTH', 'RANDOMIZE'}:
-            row = layout.row(align=True)
-            row.prop(settings, "affect_position", text="Position", icon='MESH_DATA', toggle=True)
-            row.prop(settings, "affect_strength", text="Strength", icon='COLOR', toggle=True)
-            row.prop(settings, "affect_thickness", text="Thickness", icon='LINE_DATA', toggle=True)
 
-        layout.separator()
+        layout.prop(brush, "use_falloff")
 
-        if tool == 'THICKNESS':
-            layout.row().prop(brush, "direction", expand=True)
-        elif tool == 'PINCH':
-            row = layout.row(align=True)
-            row.prop_enum(brush, "direction", 'ADD', text="Pinch")
-            row.prop_enum(brush, "direction", 'SUBTRACT', text="Inflate")
-        elif settings.tool == 'TWIST':
-            row = layout.row(align=True)
-            row.prop_enum(brush, "direction", 'SUBTRACT', text="CW")
-            row.prop_enum(brush, "direction", 'ADD', text="CCW")
+        if tool in {'SMOOTH', 'RANDOMIZE'}:
+            layout.prop(settings, "affect_position", text="Affect Position")
+            layout.prop(settings, "affect_strength", text="Affect Strength")
+            layout.prop(settings, "affect_thickness", text="Affect Thickness")
 
-        row = layout.row(align=True)
-        row.prop(settings, "use_select_mask")
-        row = layout.row(align=True)
-        row.prop(settings, "selection_alpha", slider=True)
+            if tool == 'SMOOTH':
+                layout.prop(brush, "affect_pressure")
 
-        if tool == 'SMOOTH':
-            layout.prop(brush, "affect_pressure")
+            layout.prop(settings, "affect_uv", text="Affect UV")
 
+        if tool in {'THICKNESS', 'PINCH', 'TWIST'}:
+            layout.prop(brush, "direction", expand=True)
 
-class GreasePencilBrushCurvesPanel:
-    # subclass must set
-    # bl_space_type = 'IMAGE_EDITOR'
-    bl_label = "Brush Curves"
-    bl_category = "Grease Pencil"
-    bl_region_type = 'TOOLS'
+
+# GP Object Tool Settings
+class GreasePencilAppearancePanel:
+    bl_label = "Brush Appearance"
     bl_options = {'DEFAULT_CLOSED'}
 
     @classmethod
     def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
-
-        if context.active_gpencil_brush is None:
-            return False
-
-        brush = context.active_gpencil_brush
-        return bool(brush)
+        ob = context.active_object
+        return ob and ob.type == 'GPENCIL'
 
     @staticmethod
     def draw(self, context):
         layout = self.layout
-        brush = context.active_gpencil_brush
-        # Brush
-        layout.label("Sensitivity")
-        box = layout.box()
-        box.template_curve_mapping(brush, "curve_sensitivity", brush=True)
+        layout.use_property_split = True
+        layout.use_property_decorate = False
 
-        layout.label("Strength")
-        box = layout.box()
-        box.template_curve_mapping(brush, "curve_strength", brush=True)
+        ob = context.active_object
 
-        layout.label("Jitter")
-        box = layout.box()
-        box.template_curve_mapping(brush, "curve_jitter", brush=True)
+        if ob.mode == 'GPENCIL_PAINT':
+            brush = context.active_gpencil_brush
+            gp_settings = brush.gpencil_settings
+
+            layout.prop(gp_settings, "gpencil_brush_type", text="Brush Type")
+
+            sub = layout.column(align=True)
+            sub.enabled = not brush.use_custom_icon
+            sub.prop(gp_settings, "gp_icon", text="Icon")
+
+            layout.prop(brush, "use_custom_icon")
+            sub = layout.column()
+            sub.active = brush.use_custom_icon
+            sub.prop(brush, "icon_filepath", text="")
+
+            layout.prop(gp_settings, "use_cursor", text="Show Brush")
+
+            if gp_settings.gpencil_brush_type == 'FILL':
+                layout.prop(brush, "cursor_color_add", text="Color")
+
+        elif ob.mode in ('GPENCIL_SCULPT', 'GPENCIL_WEIGHT'):
+            settings = context.tool_settings.gpencil_sculpt
+            brush = settings.brush
+
+            col = layout.column(align=True)
+            col.prop(brush, "use_cursor", text="Show Brush")
+            col.row().prop(brush, "cursor_color_add", text="Add")
+            col.row().prop(brush, "cursor_color_sub", text="Subtract")
 
 
 ###############################
@@ -539,6 +378,7 @@ class GPENCIL_MT_pie_tool_palette(Menu):
                 col.operator("gpencil.select_border", text="Border Select", icon='BORDER_RECT')
                 col.operator("gpencil.select_circle", text="Circle Select", icon='META_EMPTY')
                 col.operator("gpencil.select_lasso", text="Lasso Select", icon='BORDER_LASSO')
+                col.operator("gpencil.select_alternate", text="Alternate Select", icon='BORDER_LASSO')
 
                 # SW - Edit Tools
                 col = pie.column()
@@ -566,7 +406,7 @@ class GPENCIL_MT_pie_settings_palette(Menu):
         pie = layout.menu_pie()
         gpd = context.gpencil_data
         gpl = context.active_gpencil_layer
-        palcolor = context.active_gpencil_palettecolor
+        palcolor = None #context.active_gpencil_palettecolor
         brush = context.active_gpencil_brush
 
         is_editmode = bool(gpd and gpd.use_stroke_edit_mode and context.editable_gpencil_strokes)
@@ -737,6 +577,16 @@ class GPENCIL_MT_snap(Menu):
         layout.operator("view3d.snap_cursor_to_grid", text="Cursor to Grid")
 
 
+class GPENCIL_MT_separate(Menu):
+    bl_label = "Separate"
+
+    def draw(self, context):
+        layout = self.layout
+        layout.operator("gpencil.stroke_separate", text="Selected Points").mode = 'POINT'
+        layout.operator("gpencil.stroke_separate", text="Selected Strokes").mode = 'STROKE'
+        layout.operator("gpencil.stroke_separate", text="Active Layer").mode = 'LAYER'
+
+
 class GPENCIL_MT_gpencil_edit_specials(Menu):
     bl_label = "GPencil Specials"
 
@@ -747,6 +597,14 @@ class GPENCIL_MT_gpencil_edit_specials(Menu):
         layout.operator_context = 'INVOKE_REGION_WIN'
 
         layout.operator("gpencil.stroke_subdivide", text="Subdivide")
+        layout.operator("gpencil.stroke_simplify_fixed", text="Simplify")
+        layout.operator("gpencil.stroke_simplify", text="Simplify Adaptative")
+
+        layout.separator()
+        layout.menu("GPENCIL_MT_separate", text="Separate")
+
+        layout.separator()
+        layout.operator("gpencil.stroke_split", text="Split")
 
         layout.separator()
 
@@ -754,167 +612,129 @@ class GPENCIL_MT_gpencil_edit_specials(Menu):
         layout.operator("gpencil.stroke_join", text="Join & Copy").type = 'JOINCOPY'
         layout.operator("gpencil.stroke_flip", text="Flip Direction")
 
+        layout.separator()
+        layout.operator("gpencil.frame_duplicate", text="Duplicate Active Frame")
+        layout.operator("gpencil.frame_duplicate", text="Duplicate Active Frame All Layers").mode = 'ALL'
+
         if is_3d_view:
             layout.separator()
             layout.operator("gpencil.reproject")
 
 
-###############################
-
-
-class GPENCIL_UL_brush(UIList):
-    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
-        # assert(isinstance(item, bpy.types.GPencilBrush)
-        brush = item
-
-        if self.layout_type in {'DEFAULT', 'COMPACT'}:
-            row = layout.row(align=True)
-            row.prop(brush, "name", text="", emboss=False, icon='BRUSH_DATA')
-        elif self.layout_type == 'GRID':
-            layout.alignment = 'CENTER'
-            layout.label(text="", icon_value=icon)
-
-
-class GPENCIL_UL_palettecolor(UIList):
-    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
-        # assert(isinstance(item, bpy.types.PaletteColor)
-        palcolor = item
-
-        if self.layout_type in {'DEFAULT', 'COMPACT'}:
-            if palcolor.lock:
-                layout.active = False
-
-            split = layout.split(percentage=0.25)
-            row = split.row(align=True)
-            row.enabled = not palcolor.lock
-            row.prop(palcolor, "color", text="", emboss=palcolor.is_stroke_visible)
-            row.prop(palcolor, "fill_color", text="", emboss=palcolor.is_fill_visible)
-            split.prop(palcolor, "name", text="", emboss=False)
-
-            row = layout.row(align=True)
-            row.prop(palcolor, "lock", text="", emboss=False)
-            row.prop(palcolor, "hide", text="", emboss=False)
-            if palcolor.ghost is True:
-                icon = 'GHOST_DISABLED'
-            else:
-                icon = 'GHOST_ENABLED'
-            row.prop(palcolor, "ghost", text="", icon=icon, emboss=False)
-
-        elif self.layout_type == 'GRID':
-            layout.alignment = 'CENTER'
-            layout.label(text="", icon_value=icon)
-
+class GPENCIL_MT_gpencil_sculpt_specials(Menu):
+    bl_label = "GPencil Specials"
 
-class GPENCIL_UL_layer(UIList):
-    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
-        # assert(isinstance(item, bpy.types.GPencilLayer)
-        gpl = item
+    def draw(self, context):
+        layout = self.layout
+        is_3d_view = context.space_data.type == 'VIEW_3D'
 
-        if self.layout_type in {'DEFAULT', 'COMPACT'}:
-            if gpl.lock:
-                layout.active = False
+        layout.operator_context = 'INVOKE_REGION_WIN'
 
-            row = layout.row(align=True)
-            if gpl.is_parented:
-                icon = 'BONE_DATA'
-            else:
-                icon = 'BLANK1'
+        layout.operator("gpencil.frame_duplicate", text="Duplicate Active Frame")
+        layout.operator("gpencil.frame_duplicate", text="Duplicate Active Frame All Layers").mode = 'ALL'
 
-            row.label(text="", icon=icon)
-            row.prop(gpl, "info", text="", emboss=False)
+        layout.separator()
 
-            row = layout.row(align=True)
-            row.prop(gpl, "lock", text="", emboss=False)
-            row.prop(gpl, "hide", text="", emboss=False)
-            row.prop(gpl, "unlock_color", text="", emboss=False)
-        elif self.layout_type == 'GRID':
-            layout.alignment = 'CENTER'
-            layout.label(text="", icon_value=icon)
+        layout.operator("gpencil.stroke_subdivide", text="Subdivide")
+        layout.operator("gpencil.stroke_simplify_fixed", text="Simplify")
+        layout.operator("gpencil.stroke_simplify", text="Simplify Adaptative")
 
 
-class GPENCIL_MT_layer_specials(Menu):
-    bl_label = "Layer"
+class GPENCIL_MT_gpencil_draw_specials(Menu):
+    bl_label = "GPencil Draw Specials"
 
     def draw(self, context):
         layout = self.layout
+        is_3d_view = context.space_data.type == 'VIEW_3D'
 
-        layout.operator("gpencil.layer_duplicate", icon='COPY_ID')  # XXX: needs a dedicated icon
-
-        layout.separator()
+        layout.operator_context = 'INVOKE_REGION_WIN'
 
-        layout.operator("gpencil.reveal", icon='RESTRICT_VIEW_OFF', text="Show All")
-        layout.operator("gpencil.hide", icon='RESTRICT_VIEW_ON', text="Hide Others").unselected = True
+        layout.operator("gpencil.frame_duplicate", text="Duplicate Active Frame")
+        layout.operator("gpencil.frame_duplicate", text="Duplicate Active Frame All Layers").mode = 'ALL'
 
         layout.separator()
+        layout.operator("gpencil.primitive", text="Line", icon='IPO_CONSTANT').type = 'LINE'
+        layout.operator("gpencil.primitive", text="Rectangle", icon='UV_FACESEL').type = 'BOX'
+        layout.operator("gpencil.primitive", text="Circle", icon='ANTIALIASED').type = 'CIRCLE'
 
-        layout.operator("gpencil.lock_all", icon='LOCKED', text="Lock All")
-        layout.operator("gpencil.unlock_all", icon='UNLOCKED', text="UnLock All")
-
+        # colors
         layout.separator()
+        layout.operator("gpencil.colorpick", text="Colors", icon="GROUP_VCOL")
 
-        layout.operator("gpencil.layer_merge", icon='NLA', text="Merge Down")
 
-
-class GPENCIL_MT_brush_specials(Menu):
-    bl_label = "Layer"
+class GPENCIL_MT_gpencil_draw_delete(Menu):
+    bl_label = "GPencil Draw Delete"
 
     def draw(self, context):
         layout = self.layout
-        layout.operator("gpencil.brush_copy", icon='PASTEDOWN', text="Copy Current Drawing Brush")
-        layout.operator("gpencil.brush_presets_create", icon='HELP', text="Create a Set of Predefined Brushes")
-
+        is_3d_view = context.space_data.type == 'VIEW_3D'
 
-class GPENCIL_MT_palettecolor_specials(Menu):
-    bl_label = "Layer"
+        layout.operator_context = 'INVOKE_REGION_WIN'
 
-    def draw(self, context):
-        layout = self.layout
+        layout.operator("gpencil.active_frames_delete_all", text="Delete Frame")
 
-        layout.operator("gpencil.palettecolor_reveal", icon='RESTRICT_VIEW_OFF', text="Show All")
-        layout.operator("gpencil.palettecolor_hide", icon='RESTRICT_VIEW_ON', text="Hide Others").unselected = True
 
-        layout.separator()
+class GPENCIL_UL_annotation_layer(UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
+        # assert(isinstance(item, bpy.types.GPencilLayer)
+        gpl = item
+        gpd = context.gpencil_data
 
-        layout.operator("gpencil.palettecolor_lock_all", icon='LOCKED', text="Lock All")
-        layout.operator("gpencil.palettecolor_unlock_all", icon='UNLOCKED', text="UnLock All")
-        layout.operator("gpencil.palettecolor_copy", icon='PASTEDOWN', text="Copy Color")
+        if self.layout_type in {'DEFAULT', 'COMPACT'}:
+            if gpl.lock:
+                layout.active = False
 
-        layout.separator()
+            split = layout.split(percentage=0.2)
+            split.prop(gpl, "color", text="", emboss=True)
+            split.prop(gpl, "info", text="", emboss=False)
 
-        layout.operator("gpencil.palettecolor_select", icon='COLOR', text="Select Strokes")
-        layout.operator("gpencil.stroke_change_color", icon='MAN_TRANS', text="Move to Color")
+            row = layout.row(align=True)
+            # row.prop(gpl, "lock", text="", emboss=False)
+            row.prop(gpl, "hide", text="", emboss=False)
+        elif self.layout_type == 'GRID':
+            layout.alignment = 'CENTER'
+            layout.label(text="", icon_value=icon)
 
 
 class GreasePencilDataPanel:
-    # subclass must set
-    # bl_space_type = 'IMAGE_EDITOR'
-    bl_label = "Grease Pencil Layers"
+    bl_label = "Annotations"
     bl_region_type = 'UI'
 
+    @classmethod
+    def poll(cls, context):
+        # Show this panel as long as someone that might own this exists
+        # AND the owner isn't an object (e.g. GP Object)
+        if context.gpencil_data_owner is None:
+            return False
+        elif type(context.gpencil_data_owner) is bpy.types.Object:
+            return False
+        else:
+            return True
+
     @staticmethod
     def draw_header(self, context):
-        self.layout.prop(context.space_data, "show_grease_pencil", text="")
+        if context.space_data.type != 'VIEW_3D':
+            self.layout.prop(context.space_data, "show_annotation", text="")
 
     @staticmethod
     def draw(self, context):
         layout = self.layout
+        #layout.use_property_split = True
+        layout.use_property_decorate = False
 
         # owner of Grease Pencil data
         gpd_owner = context.gpencil_data_owner
         gpd = context.gpencil_data
 
         # Owner Selector
-        if context.space_data.type == 'VIEW_3D':
-            layout.row().prop(context.tool_settings, "grease_pencil_source", expand=True)
-        elif context.space_data.type == 'CLIP_EDITOR':
+        if context.space_data.type == 'CLIP_EDITOR':
             layout.row().prop(context.space_data, "grease_pencil_source", expand=True)
-
         # Grease Pencil data selector
         layout.template_ID(gpd_owner, "grease_pencil", new="gpencil.data_add", unlink="gpencil.data_unlink")
 
         # Grease Pencil data...
         if (gpd is None) or (not gpd.layers):
-            layout.operator("gpencil.layer_add", text="New Layer")
+            layout.operator("gpencil.layer_add", text="New Note")
         else:
             self.draw_layers(context, layout, gpd)
 
@@ -926,7 +746,7 @@ class GreasePencilDataPanel:
             layer_rows = 5
         else:
             layer_rows = 2
-        col.template_list("GPENCIL_UL_layer", "", gpd, "layers", gpd.layers, "active_index", rows=layer_rows)
+        col.template_list("GPENCIL_UL_annotation_layer", "", gpd, "layers", gpd.layers, "active_index", rows=layer_rows)
 
         col = row.column()
 
@@ -936,8 +756,6 @@ class GreasePencilDataPanel:
 
         gpl = context.active_gpencil_layer
         if gpl:
-            sub.menu("GPENCIL_MT_layer_specials", icon='DOWNARROW_HLT', text="")
-
             if len(gpd.layers) > 1:
                 col.separator()
 
@@ -945,203 +763,70 @@ class GreasePencilDataPanel:
                 sub.operator("gpencil.layer_move", icon='TRIA_UP', text="").type = 'UP'
                 sub.operator("gpencil.layer_move", icon='TRIA_DOWN', text="").type = 'DOWN'
 
-                col.separator()
-
-                sub = col.column(align=True)
-                sub.operator("gpencil.layer_isolate", icon='LOCKED', text="").affect_visibility = False
-                sub.operator("gpencil.layer_isolate", icon='RESTRICT_VIEW_OFF', text="").affect_visibility = True
-
         if gpl:
-            self.draw_layer(context, layout, gpl)
-
-    def draw_layer(self, context, layout, gpl):
-        row = layout.row(align=True)
-        row.prop(gpl, "opacity", text="Opacity", slider=True)
-
-        # Layer options
-        split = layout.split(percentage=0.5)
-        split.active = not gpl.lock
-        split.prop(gpl, "show_x_ray")
-        split.prop(gpl, "show_points")
-
-        # Offsets + Parenting (where available)
-        if context.space_data.type == 'VIEW_3D':
-            split = layout.split(percentage=0.5)
-        else:
-            split = layout.column()  # parenting is not available in 2D editors...
-        split.active = not gpl.lock
-
-        # Offsets - Color Tint
-        col = split.column()
-        subcol = col.column(align=True)
-        subcol.label("Tint")
-        subcol.enabled = not gpl.lock
-        subcol.prop(gpl, "tint_color", text="")
-        subcol.prop(gpl, "tint_factor", text="Factor", slider=True)
-
-        # Offsets - Thickness
-        row = col.row(align=True)
-        row.prop(gpl, "line_change", text="Thickness Change", slider=True)
-        row.operator("gpencil.stroke_apply_thickness", icon='STYLUS_PRESSURE', text="")
+            # layout.prop(gpl, "opacity", text="Opacity", slider=True)
+            # layout.prop(gpl, "thickness", text="Thickness")
+            #
+            # layout.separator()
 
-        # Parenting
-        if context.space_data.type == 'VIEW_3D':
-            col = split.column(align=True)
-            col.label(text="Parent:")
-            col.prop(gpl, "parent", text="")
+            # Full-Row - Frame Locking (and Delete Frame)
+            row = layout.row(align=True)
+            row.active = not gpl.lock
 
-            sub = col.column()
-            sub.prop(gpl, "parent_type", text="")
-            parent = gpl.parent
-            if parent and gpl.parent_type == 'BONE' and parent.type == 'ARMATURE':
-                sub.prop_search(gpl, "parent_bone", parent.data, "bones", text="")
+            if gpl.active_frame:
+                lock_status = iface_("Locked") if gpl.lock_frame else iface_("Unlocked")
+                lock_label = iface_("Frame: %d (%s)") % (gpl.active_frame.frame_number, lock_status)
+            else:
+                lock_label = iface_("Lock Frame")
+            row.prop(gpl, "lock_frame", text=lock_label, icon='UNLOCKED')
+            row.operator("gpencil.active_frame_delete", text="", icon='X')
 
-        layout.separator()
 
-        # Full-Row - Frame Locking (and Delete Frame)
-        row = layout.row(align=True)
-        row.active = not gpl.lock
 
-        if gpl.active_frame:
-            lock_status = iface_("Locked") if gpl.lock_frame else iface_("Unlocked")
-            lock_label = iface_("Frame: %d (%s)") % (gpl.active_frame.frame_number, lock_status)
-        else:
-            lock_label = iface_("Lock Frame")
-        row.prop(gpl, "lock_frame", text=lock_label, icon='UNLOCKED')
-        row.operator("gpencil.active_frame_delete", text="", icon='X')
-
-        layout.separator()
+class GreasePencilOnionPanel:
+    @staticmethod
+    def draw_settings(layout, gp):
+        col = layout.column()
 
-        # Onion skinning
-        col = layout.column(align=True)
-        col.active = not gpl.lock
+        col.prop(gp, "onion_mode")
 
         row = col.row()
-        row.prop(gpl, "use_onion_skinning")
-        sub = row.row(align=True)
-        icon = 'RESTRICT_RENDER_OFF' if gpl.use_ghosts_always else 'RESTRICT_RENDER_ON'
-        sub.prop(gpl, "use_ghosts_always", text="", icon=icon)
-        sub.prop(gpl, "use_ghost_custom_colors", text="", icon='COLOR')
-
-        split = col.split(percentage=0.5)
-        split.active = gpl.use_onion_skinning
+        row.prop(gp, "onion_factor", text="Opacity", slider=True)
 
         # - Before Frames
-        sub = split.column(align=True)
+        sub = layout.column(align=True)
         row = sub.row(align=True)
-        row.active = gpl.use_ghost_custom_colors
-        row.prop(gpl, "before_color", text="")
-        sub.prop(gpl, "ghost_before_range", text="Before")
+        row.active = gp.use_ghost_custom_colors
+        row.prop(gp, "before_color", text="Color Before")
 
-        # - After Frames
-        sub = split.column(align=True)
         row = sub.row(align=True)
-        row.active = gpl.use_ghost_custom_colors
-        row.prop(gpl, "after_color", text="")
-        sub.prop(gpl, "ghost_after_range", text="After")
-
-
-class GreasePencilPaletteColorPanel:
-    # subclass must set
-    bl_label = "Grease Pencil Colors"
-    bl_region_type = 'UI'
-
-    @classmethod
-    def poll(cls, context):
-        # XXX - disabled in 2.8 branch.
-        return False
-
-        if context.gpencil_data is None:
-            return False
-
-        gpd = context.gpencil_data
-        return bool(gpd.layers.active)
-
-    @staticmethod
-    def draw(self, context):
-        layout = self.layout
-        palette = context.active_gpencil_palette
+        row.active = gp.onion_mode in ('ABSOLUTE', 'RELATIVE')
+        row.prop(gp, "ghost_before_range", text="Frames Before")
 
-        if palette:
-            row = layout.row(align=True)
-            row.operator_context = 'EXEC_REGION_WIN'
-            row.operator_menu_enum("gpencil.palette_change", "palette", text="", icon='COLOR')
-            row.prop(palette, "name", text="")
-            row.operator("gpencil.palette_add", icon='ZOOMIN', text="")
-            row.operator("gpencil.palette_remove", icon='X', text="")
-
-            # Palette colors
-            row = layout.row()
-            col = row.column()
-            if len(palette.colors) >= 2:
-                color_rows = 5
-            else:
-                color_rows = 2
-            col.template_list("GPENCIL_UL_palettecolor", "", palette, "colors", palette.colors, "active_index",
-                              rows=color_rows)
-
-            col = row.column()
+        # - After Frames
+        sub = layout.column(align=True)
+        row = sub.row(align=True)
+        row.active = gp.use_ghost_custom_colors
+        row.prop(gp, "after_color", text="Color After")
 
-            sub = col.column(align=True)
-            sub.operator("gpencil.palettecolor_add", icon='ZOOMIN', text="")
-            sub.operator("gpencil.palettecolor_remove", icon='ZOOMOUT', text="")
+        row = sub.row(align=True)
+        row.active = gp.onion_mode in ('ABSOLUTE', 'RELATIVE')
+        row.prop(gp, "ghost_after_range", text="Frames After")
 
-            palcol = context.active_gpencil_palettecolor
-            if palcol:
-                sub.menu("GPENCIL_MT_palettecolor_specials", icon='DOWNARROW_HLT', text="")
+        layout.prop(gp, "use_ghost_custom_colors", text="Use Custom Color")
+        layout.prop(gp, "use_ghosts_always", text="View In Render")
 
-            if len(palette.colors) > 1:
-                col.separator()
+        # - fade and loop
+        row = layout.row()
+        row.active = gp.use_onion_skinning
+        row.prop(gp, "use_onion_fade", text="Fade")
+        if hasattr(gp, "use_onion_loop"): # XXX
+            subrow = layout.row()
+            subrow.active = gp.onion_mode in ('RELATIVE', 'SELECTED')
+            subrow.prop(gp, "use_onion_loop", text="Loop")
 
-                sub = col.column(align=True)
-                sub.operator("gpencil.palettecolor_move", icon='TRIA_UP', text="").direction = 'UP'
-                sub.operator("gpencil.palettecolor_move", icon='TRIA_DOWN', text="").direction = 'DOWN'
-
-                row = layout.row()
-                sub = row.row(align=True)
-                sub.label(text="Isolate:")  # based on active color only
-                sub.operator("gpencil.palettecolor_isolate", icon='LOCKED', text="").affect_visibility = False
-                sub.operator("gpencil.palettecolor_isolate", icon='RESTRICT_VIEW_OFF', text="").affect_visibility = True
-                sub = row.row(align=True)
-                sub.label(text="Lock:")  # based on other stuff...
-                sub.operator("gpencil.stroke_lock_color", icon='BORDER_RECT', text="")
-                sub.operator("gpencil.palette_lock_layer", icon='COLOR', text="")
-
-            pcolor = palette.colors.active
-            if pcolor:
-                self.draw_palettecolors(layout, pcolor)
-
-    # Draw palette colors
-    def draw_palettecolors(self, layout, pcolor):
-        # color settings
-        split = layout.split(percentage=0.5)
-        split.active = not pcolor.lock
-
-        # Column 1 - Stroke
-        col = split.column(align=True)
-        col.enabled = not pcolor.lock
-        col.label(text="Stroke:")
-        col.prop(pcolor, "color", text="")
-        col.prop(pcolor, "alpha", slider=True)
-
-        # Column 2 - Fill
-        col = split.column(align=True)
-        col.enabled = not pcolor.lock
-        col.label(text="Fill:")
-        col.prop(pcolor, "fill_color", text="")
-        col.prop(pcolor, "fill_alpha", text="Opacity", slider=True)
-
-        # Options
-        split = layout.split(percentage=0.5)
-        split.active = not pcolor.lock
-
-        col = split.column(align=True)
-        col.active = not pcolor.lock
-        col.prop(pcolor, "use_volumetric_strokes")
-        col = split.column(align=True)
-        col.active = not pcolor.lock
-        col.prop(pcolor, "use_hq_fill")
 
+###############################
 
 class GreasePencilToolsPanel:
     # For use in "2D" Editors without their own toolbar
@@ -1150,6 +835,7 @@ class GreasePencilToolsPanel:
     # bl_options = {'DEFAULT_CLOSED'}
     bl_label = "Grease Pencil Settings"
     bl_region_type = 'UI'
+    bl_options = {'DEFAULT_CLOSED'}
 
     @classmethod
     def poll(cls, context):
@@ -1183,20 +869,23 @@ class GreasePencilToolsPanel:
 
         gpencil_stroke_placement_settings(context, layout)
 
+###############################
 
 classes = (
     GPENCIL_MT_pie_tool_palette,
     GPENCIL_MT_pie_settings_palette,
     GPENCIL_MT_pie_tools_more,
     GPENCIL_MT_pie_sculpt,
+
     GPENCIL_MT_snap,
+    GPENCIL_MT_separate,
+
     GPENCIL_MT_gpencil_edit_specials,
-    GPENCIL_UL_brush,
-    GPENCIL_UL_palettecolor,
-    GPENCIL_UL_layer,
-    GPENCIL_MT_layer_specials,
-    GPENCIL_MT_brush_specials,
-    GPENCIL_MT_palettecolor_specials,
+    GPENCIL_MT_gpencil_sculpt_specials,
+    GPENCIL_MT_gpencil_draw_specials,
+    GPENCIL_MT_gpencil_draw_delete,
+
+    GPENCIL_UL_annotation_layer,
 )
 
 if __name__ == "__main__":  # only for live edit.