Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 213 insertions, 0 deletions

diff --git a/app/operations/layer-modes/gimpoperationsplit.c b/app/operations/layer-modes/gimpoperationsplit.c
new file mode 100644
index 0000000..fe83d3f
--- /dev/null
+++ b/app/operations/layer-modes/gimpoperationsplit.c
@@ -0,0 +1,213 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationsplit.c
+ * Copyright (C) 2008 Michael Natterer <mitch@gimp.org>
+ *               2017 Ell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl-plugin.h>
+
+#include "../operations-types.h"
+
+#include "gimpoperationsplit.h"
+
+
+static gboolean   gimp_operation_split_process (GeglOperation       *op,
+                                                void                *in,
+                                                void                *layer,
+                                                void                *mask,
+                                                void                *out,
+                                                glong                samples,
+                                                const GeglRectangle *roi,
+                                                gint                 level);
+
+
+G_DEFINE_TYPE (GimpOperationSplit, gimp_operation_split,
+               GIMP_TYPE_OPERATION_LAYER_MODE)
+
+
+static void
+gimp_operation_split_class_init (GimpOperationSplitClass *klass)
+{
+  GeglOperationClass          *operation_class  = GEGL_OPERATION_CLASS (klass);
+  GimpOperationLayerModeClass *layer_mode_class = GIMP_OPERATION_LAYER_MODE_CLASS (klass);
+
+  gegl_operation_class_set_keys (operation_class,
+                                 "name",        "gimp:split",
+                                 "description", "GIMP split mode operation",
+                                 NULL);
+
+  layer_mode_class->process = gimp_operation_split_process;
+}
+
+static void
+gimp_operation_split_init (GimpOperationSplit *self)
+{
+}
+
+static gboolean
+gimp_operation_split_process (GeglOperation       *op,
+                              void                *in_p,
+                              void                *layer_p,
+                              void                *mask_p,
+                              void                *out_p,
+                              glong                samples,
+                              const GeglRectangle *roi,
+                              gint                 level)
+{
+  GimpOperationLayerMode *layer_mode = (gpointer) op;
+  gfloat                 *in         = in_p;
+  gfloat                 *out        = out_p;
+  gfloat                 *layer      = layer_p;
+  gfloat                 *mask       = mask_p;
+  gfloat                  opacity    = layer_mode->opacity;
+  const gboolean          has_mask   = mask != NULL;
+
+  switch (layer_mode->composite_mode)
+    {
+    case GIMP_LAYER_COMPOSITE_UNION:
+      while (samples--)
+        {
+          gfloat in_alpha    = in[ALPHA];
+          gfloat layer_alpha = layer[ALPHA] * opacity;
+          gfloat new_alpha;
+          gint   b;
+
+          if (has_mask)
+            layer_alpha *= *mask;
+
+          if (layer_alpha <= in_alpha)
+            {
+              new_alpha = in_alpha - layer_alpha;
+
+              for (b = RED; b < ALPHA; b++)
+                {
+                  out[b] = in[b];
+                }
+            }
+          else
+            {
+              new_alpha = layer_alpha - in_alpha;
+
+              for (b = RED; b < ALPHA; b++)
+                {
+                  out[b] = layer[b];
+                }
+            }
+
+          out[ALPHA] = new_alpha;
+
+          in    += 4;
+          layer += 4;
+          out   += 4;
+
+          if (has_mask)
+            mask++;
+        }
+      break;
+
+    case GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP:
+    case GIMP_LAYER_COMPOSITE_AUTO:
+      while (samples--)
+        {
+          gfloat in_alpha    = in[ALPHA];
+          gfloat layer_alpha = layer[ALPHA] * opacity;
+          gfloat new_alpha;
+          gint   b;
+
+          if (has_mask)
+            layer_alpha *= *mask;
+
+          new_alpha = MAX (in_alpha - layer_alpha, 0.0f);
+
+          for (b = RED; b < ALPHA; b++)
+            {
+              out[b] = in[b];
+            }
+
+          out[ALPHA] = new_alpha;
+
+          in    += 4;
+          layer += 4;
+          out   += 4;
+
+          if (has_mask)
+            mask++;
+        }
+      break;
+
+    case GIMP_LAYER_COMPOSITE_CLIP_TO_LAYER:
+      while (samples--)
+        {
+          gfloat in_alpha    = in[ALPHA];
+          gfloat layer_alpha = layer[ALPHA] * opacity;
+          gfloat new_alpha;
+          gint   b;
+
+          if (has_mask)
+            layer_alpha *= *mask;
+
+          new_alpha = MAX (layer_alpha - in_alpha, 0.0f);
+
+          if (new_alpha != 0.0f)
+            {
+              for (b = RED; b < ALPHA; b++)
+                {
+                  out[b] = layer[b];
+                }
+            }
+          else
+            {
+              for (b = RED; b < ALPHA; b++)
+                {
+                  out[b] = in[b];
+                }
+            }
+
+          out[ALPHA] = new_alpha;
+
+          in    += 4;
+          layer += 4;
+          out   += 4;
+
+          if (has_mask)
+            mask++;
+        }
+      break;
+
+    case GIMP_LAYER_COMPOSITE_INTERSECTION:
+      while (samples--)
+        {
+          gint   b;
+
+          for (b = RED; b < ALPHA; b++)
+            {
+              out[b] = in[b];
+            }
+
+          out[ALPHA] = 0.0f;
+
+          in    += 4;
+          out   += 4;
+        }
+      break;
+    }
+
+  return TRUE;
+}