Add Onion Skin support to Annotations

The old onion skinning used in 2.7x has been ported and converted to 2.8. Only basic features have been included. For more advanced onion skin features, use grease pencil objects.

Onion Skin is supported in View 3D and Sequencer.

1 files changed, 38 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_gpencil.c b/source/blender/makesrna/intern/rna_gpencil.c
index d6257aa0c1b..0006a8859bf 100644
--- a/source/blender/makesrna/intern/rna_gpencil.c
+++ b/source/blender/makesrna/intern/rna_gpencil.c
@@ -1076,6 +1076,8 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	PropertyRNA *prop;
 
 	FunctionRNA *func;
+	static const float default_onion_color_b[] = { 0.302f, 0.851f, 0.302f };
+	static const float default_onion_color_a[] = { 0.250f, 0.1f, 1.0f };
 
 	srna = RNA_def_struct(brna, "GPencilLayer", NULL);
 	RNA_def_struct_sdna(srna, "bGPDlayer");
@@ -1157,6 +1159,42 @@ static void rna_def_gpencil_layer(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Onion Skinning", "Display onion skins before and after the current frame");
 	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
 
+	prop = RNA_def_property(srna, "use_annotation_onion_skinning", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "onion_flag", GP_LAYER_ONIONSKIN);
+	RNA_def_property_ui_text(prop, "Onion Skinning",
+		"Display annotation onion skins before and after the current frame");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+
+	prop = RNA_def_property(srna, "annotation_onion_before_range", PROP_INT, PROP_NONE);
+	RNA_def_property_int_sdna(prop, NULL, "gstep");
+	RNA_def_property_range(prop, -1, 120);
+	RNA_def_property_ui_text(prop, "Frames Before",
+		"Maximum number of frames to show before current frame");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+
+	prop = RNA_def_property(srna, "annotation_onion_after_range", PROP_INT, PROP_NONE);
+	RNA_def_property_int_sdna(prop, NULL, "gstep_next");
+	RNA_def_property_range(prop, -1, 120);
+	RNA_def_property_ui_text(prop, "Frames After",
+		"Maximum number of frames to show after current frame");
+	RNA_def_property_update(prop, NC_GPENCIL | ND_DATA, "rna_GPencil_update");
+
+	prop = RNA_def_property(srna, "annotation_onion_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_float_array_default(prop, default_onion_color_b);
+	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, "annotation_onion_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_float_array_default(prop, default_onion_color_a);
+	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");
+
 	/* pass index for compositing and modifiers */
 	prop = RNA_def_property(srna, "pass_index", PROP_INT, PROP_UNSIGNED);
 	RNA_def_property_int_sdna(prop, NULL, "pass_index");