[gimp] app: add gimp_gegl_mode_is_linear

[Øyvind Kolås <ok src gnome org>]

commit 377f4687b1d0ad513fec861c0348d5ba41862d1a
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Jan 11 22:13:14 2017 +0100

    app: add gimp_gegl_mode_is_linear

 app/gegl/gimp-gegl-nodes.c |  127 ++++++++++++++++++++++----------------------
 app/gegl/gimp-gegl-nodes.h |    1 +
 2 files changed, 65 insertions(+), 63 deletions(-)
---
diff --git a/app/gegl/gimp-gegl-nodes.c b/app/gegl/gimp-gegl-nodes.c
index 15a05e6..b23eab9 100644
--- a/app/gegl/gimp-gegl-nodes.c
+++ b/app/gegl/gimp-gegl-nodes.c
@@ -138,6 +138,68 @@ gimp_gegl_add_buffer_source (GeglNode   *parent,
   return buffer_source;
 }
 
+gboolean
+gimp_gegl_mode_is_linear (GimpLayerMode mode)
+{
+  switch (mode)
+    {
+    case GIMP_LAYER_MODE_NORMAL:
+    case GIMP_LAYER_MODE_DISSOLVE:
+    case GIMP_LAYER_MODE_MULTIPLY_LINEAR:
+      return TRUE;
+    case GIMP_LAYER_MODE_BEHIND:
+    case GIMP_LAYER_MODE_MULTIPLY:
+    case GIMP_LAYER_MODE_MULTIPLY_LEGACY:
+    case GIMP_LAYER_MODE_SCREEN:
+    case GIMP_LAYER_MODE_SCREEN_LEGACY:
+    case GIMP_LAYER_MODE_ADDITION:
+    case GIMP_LAYER_MODE_SUBTRACT:
+    case GIMP_LAYER_MODE_ADDITION_LEGACY:
+    case GIMP_LAYER_MODE_SUBTRACT_LEGACY:
+    case GIMP_LAYER_MODE_DARKEN_ONLY:
+    case GIMP_LAYER_MODE_DARKEN_ONLY_LEGACY:
+    case GIMP_LAYER_MODE_LIGHTEN_ONLY:
+    case GIMP_LAYER_MODE_LIGHTEN_ONLY_LEGACY:
+    case GIMP_LAYER_MODE_NORMAL_NON_LINEAR:
+    case GIMP_LAYER_MODE_OVERLAY_LEGACY:
+    case GIMP_LAYER_MODE_DIFFERENCE_LEGACY:
+    case GIMP_LAYER_MODE_DIFFERENCE:
+    case GIMP_LAYER_MODE_HSV_HUE:
+    case GIMP_LAYER_MODE_HSV_SATURATION:
+    case GIMP_LAYER_MODE_HSV_COLOR:
+    case GIMP_LAYER_MODE_HSV_VALUE:
+    case GIMP_LAYER_MODE_HSV_HUE_LEGACY:
+    case GIMP_LAYER_MODE_HSV_SATURATION_LEGACY:
+    case GIMP_LAYER_MODE_HSV_COLOR_LEGACY:
+    case GIMP_LAYER_MODE_HSV_VALUE_LEGACY:
+    case GIMP_LAYER_MODE_DIVIDE:
+    case GIMP_LAYER_MODE_DIVIDE_LEGACY:
+    case GIMP_LAYER_MODE_DODGE:
+    case GIMP_LAYER_MODE_DODGE_LEGACY:
+    case GIMP_LAYER_MODE_BURN:
+    case GIMP_LAYER_MODE_BURN_LEGACY:
+    case GIMP_LAYER_MODE_HARDLIGHT:
+    case GIMP_LAYER_MODE_HARDLIGHT_LEGACY:
+    case GIMP_LAYER_MODE_SOFTLIGHT:
+    case GIMP_LAYER_MODE_SOFTLIGHT_LEGACY:
+    case GIMP_LAYER_MODE_GRAIN_EXTRACT:
+    case GIMP_LAYER_MODE_GRAIN_EXTRACT_LEGACY:
+    case GIMP_LAYER_MODE_GRAIN_MERGE:
+    case GIMP_LAYER_MODE_GRAIN_MERGE_LEGACY:
+    case GIMP_LAYER_MODE_COLOR_ERASE:
+    case GIMP_LAYER_MODE_OVERLAY:
+    case GIMP_LAYER_MODE_ERASE:
+    case GIMP_LAYER_MODE_REPLACE:
+    case GIMP_LAYER_MODE_ANTI_ERASE:
+    case GIMP_LAYER_MODE_LCH_HUE:
+    case GIMP_LAYER_MODE_LCH_CHROMA:
+    case GIMP_LAYER_MODE_LCH_COLOR:
+    case GIMP_LAYER_MODE_LCH_LIGHTNESS:
+      return FALSE;
+  }
+  return FALSE;
+}
+
 void
 gimp_gegl_mode_node_set_mode (GeglNode      *node,
                               GimpLayerMode  mode,
@@ -360,72 +422,11 @@ gimp_gegl_mode_node_set_mode (GeglNode      *node,
    */
   gegl_node_set (node,
                  "operation", operation,
-                 "linear",    linear,
                  "opacity",   opacity,
                  NULL);
 
-  switch (mode)
-    {
-    case GIMP_LAYER_MODE_NORMAL:
-    case GIMP_LAYER_MODE_DISSOLVE:
-    case GIMP_LAYER_MODE_MULTIPLY_LINEAR:
-        gegl_node_set (node,
-           "linear",    TRUE,
-           NULL);
-        break;
-    case GIMP_LAYER_MODE_BEHIND:
-    case GIMP_LAYER_MODE_MULTIPLY:
-    case GIMP_LAYER_MODE_MULTIPLY_LEGACY:
-    case GIMP_LAYER_MODE_SCREEN:
-    case GIMP_LAYER_MODE_SCREEN_LEGACY:
-    case GIMP_LAYER_MODE_ADDITION:
-    case GIMP_LAYER_MODE_SUBTRACT:
-    case GIMP_LAYER_MODE_ADDITION_LEGACY:
-    case GIMP_LAYER_MODE_SUBTRACT_LEGACY:
-    case GIMP_LAYER_MODE_DARKEN_ONLY:
-    case GIMP_LAYER_MODE_DARKEN_ONLY_LEGACY:
-    case GIMP_LAYER_MODE_LIGHTEN_ONLY:
-    case GIMP_LAYER_MODE_LIGHTEN_ONLY_LEGACY:
-    case GIMP_LAYER_MODE_NORMAL_NON_LINEAR:
-    case GIMP_LAYER_MODE_OVERLAY_LEGACY:
-    case GIMP_LAYER_MODE_DIFFERENCE_LEGACY:
-    case GIMP_LAYER_MODE_DIFFERENCE:
-    case GIMP_LAYER_MODE_HSV_HUE:
-    case GIMP_LAYER_MODE_HSV_SATURATION:
-    case GIMP_LAYER_MODE_HSV_COLOR:
-    case GIMP_LAYER_MODE_HSV_VALUE:
-    case GIMP_LAYER_MODE_HSV_HUE_LEGACY:
-    case GIMP_LAYER_MODE_HSV_SATURATION_LEGACY:
-    case GIMP_LAYER_MODE_HSV_COLOR_LEGACY:
-    case GIMP_LAYER_MODE_HSV_VALUE_LEGACY:
-    case GIMP_LAYER_MODE_DIVIDE:
-    case GIMP_LAYER_MODE_DIVIDE_LEGACY:
-    case GIMP_LAYER_MODE_DODGE:
-    case GIMP_LAYER_MODE_DODGE_LEGACY:
-    case GIMP_LAYER_MODE_BURN:
-    case GIMP_LAYER_MODE_BURN_LEGACY:
-    case GIMP_LAYER_MODE_HARDLIGHT:
-    case GIMP_LAYER_MODE_HARDLIGHT_LEGACY:
-    case GIMP_LAYER_MODE_SOFTLIGHT:
-    case GIMP_LAYER_MODE_SOFTLIGHT_LEGACY:
-    case GIMP_LAYER_MODE_GRAIN_EXTRACT:
-    case GIMP_LAYER_MODE_GRAIN_EXTRACT_LEGACY:
-    case GIMP_LAYER_MODE_GRAIN_MERGE:
-    case GIMP_LAYER_MODE_GRAIN_MERGE_LEGACY:
-    case GIMP_LAYER_MODE_COLOR_ERASE:
-    case GIMP_LAYER_MODE_OVERLAY:
-    case GIMP_LAYER_MODE_ERASE:
-    case GIMP_LAYER_MODE_REPLACE:
-    case GIMP_LAYER_MODE_ANTI_ERASE:
-    case GIMP_LAYER_MODE_LCH_HUE:
-    case GIMP_LAYER_MODE_LCH_CHROMA:
-    case GIMP_LAYER_MODE_LCH_COLOR:
-    case GIMP_LAYER_MODE_LCH_LIGHTNESS:
-        gegl_node_set (node,
-           "linear",   FALSE,
-           NULL);
-        break;
-    }
+  gegl_node_set (node, "linear", gimp_gegl_mode_is_linear (mode)?TRUE:FALSE,
+                 NULL);
 }
 
 void
diff --git a/app/gegl/gimp-gegl-nodes.h b/app/gegl/gimp-gegl-nodes.h
index 70abbb1..bfe380b 100644
--- a/app/gegl/gimp-gegl-nodes.h
+++ b/app/gegl/gimp-gegl-nodes.h
@@ -41,6 +41,7 @@ void       gimp_gegl_node_set_matrix           (GeglNode          *node,
                                                 const GimpMatrix3 *matrix);
 void       gimp_gegl_node_set_color            (GeglNode          *node,
                                                 const GimpRGB     *color);
+gboolean   gimp_gegl_mode_is_linear            (GimpLayerMode      mode);
 
 
 #endif /* __GIMP_GEGL_NODES_H__ */