Refactor: move gpencil modifier .blend I/O to blenkernel

Ref T76372.

4 files changed, 170 insertions, 159 deletions

diff --git a/source/blender/blenkernel/BKE_gpencil_modifier.h b/source/blender/blenkernel/BKE_gpencil_modifier.h
index 78a17e3568d..7729d2c53ab 100644
--- a/source/blender/blenkernel/BKE_gpencil_modifier.h
+++ b/source/blender/blenkernel/BKE_gpencil_modifier.h
@@ -35,6 +35,9 @@ struct Main;
 struct ModifierUpdateDepsgraphContext;
 struct Object;
 struct Scene;
+struct BlendWriter;
+struct BlendDataReader;
+struct BlendLibReader;
 /* NOTE: bakeModifier() called from UI:
  * needs to create new data-blocks, hence the need for this. */
 struct bGPDframe;
@@ -303,6 +306,10 @@ struct bGPDframe *BKE_gpencil_frame_retime_get(struct Depsgraph *depsgraph,
                                                struct Object *ob,
                                                struct bGPDlayer *gpl);
 
+void BKE_gpencil_modifier_blend_write(struct BlendWriter *writer, struct ListBase *modbase);
+void BKE_gpencil_modifier_blend_read_data(struct BlendDataReader *reader, struct ListBase *lb);
+void BKE_gpencil_modifier_blend_read_lib(struct BlendLibReader *reader, struct Object *ob);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/blenkernel/intern/gpencil_modifier.c b/source/blender/blenkernel/intern/gpencil_modifier.c
index 934791ccc35..be06638ab64 100644
--- a/source/blender/blenkernel/intern/gpencil_modifier.c
+++ b/source/blender/blenkernel/intern/gpencil_modifier.c
@@ -37,10 +37,12 @@
 #include "DNA_gpencil_modifier_types.h"
 #include "DNA_gpencil_types.h"
 #include "DNA_meshdata_types.h"
+#include "DNA_modifier_types.h"
 #include "DNA_object_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_screen_types.h"
 
+#include "BKE_colortools.h"
 #include "BKE_gpencil.h"
 #include "BKE_gpencil_geom.h"
 #include "BKE_gpencil_modifier.h"
@@ -55,6 +57,8 @@
 
 #include "MOD_gpencil_modifiertypes.h"
 
+#include "BLO_read_write.h"
+
 #include "CLG_log.h"
 
 static CLG_LogRef LOG = {"bke.gpencil_modifier"};
@@ -777,3 +781,159 @@ void BKE_gpencil_modifiers_calc(Depsgraph *depsgraph, Scene *scene, Object *ob)
   /* Clear any lattice data. */
   BKE_gpencil_lattice_clear(ob);
 }
+
+void BKE_gpencil_modifier_blend_write(BlendWriter *writer, ListBase *modbase)
+{
+  if (modbase == NULL) {
+    return;
+  }
+
+  LISTBASE_FOREACH (GpencilModifierData *, md, modbase) {
+    const GpencilModifierTypeInfo *mti = BKE_gpencil_modifier_get_info(md->type);
+    if (mti == NULL) {
+      return;
+    }
+
+    BLO_write_struct_by_name(writer, mti->struct_name, md);
+
+    if (md->type == eGpencilModifierType_Thick) {
+      ThickGpencilModifierData *gpmd = (ThickGpencilModifierData *)md;
+
+      if (gpmd->curve_thickness) {
+        BKE_curvemapping_blend_write(writer, gpmd->curve_thickness);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Noise) {
+      NoiseGpencilModifierData *gpmd = (NoiseGpencilModifierData *)md;
+
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Hook) {
+      HookGpencilModifierData *gpmd = (HookGpencilModifierData *)md;
+
+      if (gpmd->curfalloff) {
+        BKE_curvemapping_blend_write(writer, gpmd->curfalloff);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Tint) {
+      TintGpencilModifierData *gpmd = (TintGpencilModifierData *)md;
+      if (gpmd->colorband) {
+        BLO_write_struct(writer, ColorBand, gpmd->colorband);
+      }
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Smooth) {
+      SmoothGpencilModifierData *gpmd = (SmoothGpencilModifierData *)md;
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Color) {
+      ColorGpencilModifierData *gpmd = (ColorGpencilModifierData *)md;
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Opacity) {
+      OpacityGpencilModifierData *gpmd = (OpacityGpencilModifierData *)md;
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
+      }
+    }
+  }
+}
+
+void BKE_gpencil_modifier_blend_read_data(BlendDataReader *reader, ListBase *lb)
+{
+  BLO_read_list(reader, lb);
+
+  LISTBASE_FOREACH (GpencilModifierData *, md, lb) {
+    md->error = NULL;
+
+    /* if modifiers disappear, or for upward compatibility */
+    if (NULL == BKE_gpencil_modifier_get_info(md->type)) {
+      md->type = eModifierType_None;
+    }
+
+    if (md->type == eGpencilModifierType_Lattice) {
+      LatticeGpencilModifierData *gpmd = (LatticeGpencilModifierData *)md;
+      gpmd->cache_data = NULL;
+    }
+    else if (md->type == eGpencilModifierType_Hook) {
+      HookGpencilModifierData *hmd = (HookGpencilModifierData *)md;
+
+      BLO_read_data_address(reader, &hmd->curfalloff);
+      if (hmd->curfalloff) {
+        BKE_curvemapping_blend_read(reader, hmd->curfalloff);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Noise) {
+      NoiseGpencilModifierData *gpmd = (NoiseGpencilModifierData *)md;
+
+      BLO_read_data_address(reader, &gpmd->curve_intensity);
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
+        /* initialize the curve. Maybe this could be moved to modififer logic */
+        BKE_curvemapping_init(gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Thick) {
+      ThickGpencilModifierData *gpmd = (ThickGpencilModifierData *)md;
+
+      BLO_read_data_address(reader, &gpmd->curve_thickness);
+      if (gpmd->curve_thickness) {
+        BKE_curvemapping_blend_read(reader, gpmd->curve_thickness);
+        BKE_curvemapping_init(gpmd->curve_thickness);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Tint) {
+      TintGpencilModifierData *gpmd = (TintGpencilModifierData *)md;
+      BLO_read_data_address(reader, &gpmd->colorband);
+      BLO_read_data_address(reader, &gpmd->curve_intensity);
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
+        BKE_curvemapping_init(gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Smooth) {
+      SmoothGpencilModifierData *gpmd = (SmoothGpencilModifierData *)md;
+      BLO_read_data_address(reader, &gpmd->curve_intensity);
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
+        BKE_curvemapping_init(gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Color) {
+      ColorGpencilModifierData *gpmd = (ColorGpencilModifierData *)md;
+      BLO_read_data_address(reader, &gpmd->curve_intensity);
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
+        BKE_curvemapping_init(gpmd->curve_intensity);
+      }
+    }
+    else if (md->type == eGpencilModifierType_Opacity) {
+      OpacityGpencilModifierData *gpmd = (OpacityGpencilModifierData *)md;
+      BLO_read_data_address(reader, &gpmd->curve_intensity);
+      if (gpmd->curve_intensity) {
+        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
+        BKE_curvemapping_init(gpmd->curve_intensity);
+      }
+    }
+  }
+}
+
+void BKE_gpencil_modifier_blend_read_lib(BlendLibReader *reader, Object *ob)
+{
+  BKE_gpencil_modifiers_foreach_ID_link(ob, BKE_object_modifiers_lib_link_common, reader);
+
+  /* If linking from a library, clear 'local' library override flag. */
+  if (ob->id.lib != NULL) {
+    LISTBASE_FOREACH (GpencilModifierData *, mod, &ob->greasepencil_modifiers) {
+      mod->flag &= ~eGpencilModifierFlag_OverrideLibrary_Local;
+    }
+  }
+}
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index fa1e832c9f8..2b93f5222db 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -2745,18 +2745,6 @@ void blo_do_versions_key_uidgen(Key *key)
 /** \name Read ID: Object
  * \{ */
 
-static void lib_link_gpencil_modifiers(BlendLibReader *reader, Object *ob)
-{
-  BKE_gpencil_modifiers_foreach_ID_link(ob, BKE_object_modifiers_lib_link_common, reader);
-
-  /* If linking from a library, clear 'local' library override flag. */
-  if (ob->id.lib != NULL) {
-    LISTBASE_FOREACH (GpencilModifierData *, mod, &ob->greasepencil_modifiers) {
-      mod->flag &= ~eGpencilModifierFlag_OverrideLibrary_Local;
-    }
-  }
-}
-
 static void lib_link_object(BlendLibReader *reader, Object *ob)
 {
   bool warn = false;
@@ -2911,7 +2899,7 @@ static void lib_link_object(BlendLibReader *reader, Object *ob)
 
   BKE_particle_system_blend_read_lib(reader, ob, &ob->id, &ob->particlesystem);
   BKE_modifier_blend_read_lib(reader, ob);
-  lib_link_gpencil_modifiers(reader, ob);
+  BKE_gpencil_modifier_blend_read_lib(reader, ob);
   BKE_shaderfx_blend_read_lib(reader, ob);
 
   if (ob->rigidbody_constraint) {
@@ -2988,85 +2976,6 @@ static void direct_link_pose(BlendDataReader *reader, bPose *pose)
   }
 }
 
-static void direct_link_gpencil_modifiers(BlendDataReader *reader, ListBase *lb)
-{
-  BLO_read_list(reader, lb);
-
-  LISTBASE_FOREACH (GpencilModifierData *, md, lb) {
-    md->error = NULL;
-
-    /* if modifiers disappear, or for upward compatibility */
-    if (NULL == BKE_gpencil_modifier_get_info(md->type)) {
-      md->type = eModifierType_None;
-    }
-
-    if (md->type == eGpencilModifierType_Lattice) {
-      LatticeGpencilModifierData *gpmd = (LatticeGpencilModifierData *)md;
-      gpmd->cache_data = NULL;
-    }
-    else if (md->type == eGpencilModifierType_Hook) {
-      HookGpencilModifierData *hmd = (HookGpencilModifierData *)md;
-
-      BLO_read_data_address(reader, &hmd->curfalloff);
-      if (hmd->curfalloff) {
-        BKE_curvemapping_blend_read(reader, hmd->curfalloff);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Noise) {
-      NoiseGpencilModifierData *gpmd = (NoiseGpencilModifierData *)md;
-
-      BLO_read_data_address(reader, &gpmd->curve_intensity);
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
-        /* initialize the curve. Maybe this could be moved to modififer logic */
-        BKE_curvemapping_init(gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Thick) {
-      ThickGpencilModifierData *gpmd = (ThickGpencilModifierData *)md;
-
-      BLO_read_data_address(reader, &gpmd->curve_thickness);
-      if (gpmd->curve_thickness) {
-        BKE_curvemapping_blend_read(reader, gpmd->curve_thickness);
-        BKE_curvemapping_init(gpmd->curve_thickness);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Tint) {
-      TintGpencilModifierData *gpmd = (TintGpencilModifierData *)md;
-      BLO_read_data_address(reader, &gpmd->colorband);
-      BLO_read_data_address(reader, &gpmd->curve_intensity);
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
-        BKE_curvemapping_init(gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Smooth) {
-      SmoothGpencilModifierData *gpmd = (SmoothGpencilModifierData *)md;
-      BLO_read_data_address(reader, &gpmd->curve_intensity);
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
-        BKE_curvemapping_init(gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Color) {
-      ColorGpencilModifierData *gpmd = (ColorGpencilModifierData *)md;
-      BLO_read_data_address(reader, &gpmd->curve_intensity);
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
-        BKE_curvemapping_init(gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Opacity) {
-      OpacityGpencilModifierData *gpmd = (OpacityGpencilModifierData *)md;
-      BLO_read_data_address(reader, &gpmd->curve_intensity);
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_read(reader, gpmd->curve_intensity);
-        BKE_curvemapping_init(gpmd->curve_intensity);
-      }
-    }
-  }
-}
-
 static void direct_link_object(BlendDataReader *reader, Object *ob)
 {
   PartEff *paf;
@@ -3111,7 +3020,7 @@ static void direct_link_object(BlendDataReader *reader, Object *ob)
 
   /* do it here, below old data gets converted */
   BKE_modifier_blend_read_data(reader, &ob->modifiers, ob);
-  direct_link_gpencil_modifiers(reader, &ob->greasepencil_modifiers);
+  BKE_gpencil_modifier_blend_read_data(reader, &ob->greasepencil_modifiers);
   BKE_shaderfx_blend_read_data(reader, &ob->shader_fx);
 
   BLO_read_list(reader, &ob->effect);
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index b46880e0373..ea3c81ba121 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -942,71 +942,6 @@ static void write_fmaps(BlendWriter *writer, ListBase *fbase)
   }
 }
 
-static void write_gpencil_modifiers(BlendWriter *writer, ListBase *modbase)
-{
-  if (modbase == NULL) {
-    return;
-  }
-
-  LISTBASE_FOREACH (GpencilModifierData *, md, modbase) {
-    const GpencilModifierTypeInfo *mti = BKE_gpencil_modifier_get_info(md->type);
-    if (mti == NULL) {
-      return;
-    }
-
-    BLO_write_struct_by_name(writer, mti->struct_name, md);
-
-    if (md->type == eGpencilModifierType_Thick) {
-      ThickGpencilModifierData *gpmd = (ThickGpencilModifierData *)md;
-
-      if (gpmd->curve_thickness) {
-        BKE_curvemapping_blend_write(writer, gpmd->curve_thickness);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Noise) {
-      NoiseGpencilModifierData *gpmd = (NoiseGpencilModifierData *)md;
-
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Hook) {
-      HookGpencilModifierData *gpmd = (HookGpencilModifierData *)md;
-
-      if (gpmd->curfalloff) {
-        BKE_curvemapping_blend_write(writer, gpmd->curfalloff);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Tint) {
-      TintGpencilModifierData *gpmd = (TintGpencilModifierData *)md;
-      if (gpmd->colorband) {
-        BLO_write_struct(writer, ColorBand, gpmd->colorband);
-      }
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Smooth) {
-      SmoothGpencilModifierData *gpmd = (SmoothGpencilModifierData *)md;
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Color) {
-      ColorGpencilModifierData *gpmd = (ColorGpencilModifierData *)md;
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
-      }
-    }
-    else if (md->type == eGpencilModifierType_Opacity) {
-      OpacityGpencilModifierData *gpmd = (OpacityGpencilModifierData *)md;
-      if (gpmd->curve_intensity) {
-        BKE_curvemapping_blend_write(writer, gpmd->curve_intensity);
-      }
-    }
-  }
-}
-
 static void write_object(BlendWriter *writer, Object *ob, const void *id_address)
 {
   const bool is_undo = BLO_write_is_undo(writer);
@@ -1072,7 +1007,7 @@ static void write_object(BlendWriter *writer, Object *ob, const void *id_address
 
     BKE_particle_system_blend_write(writer, &ob->particlesystem);
     BKE_modifier_blend_write(writer, &ob->modifiers);
-    write_gpencil_modifiers(writer, &ob->greasepencil_modifiers);
+    BKE_gpencil_modifier_blend_write(writer, &ob->greasepencil_modifiers);
     BKE_shaderfx_blend_write(writer, &ob->shader_fx);
 
     BLO_write_struct_list(writer, LinkData, &ob->pc_ids);