Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 300 insertions, 0 deletions

diff --git a/app/core/gimpimage-convert-precision.c b/app/core/gimpimage-convert-precision.c
new file mode 100644
index 0000000..ae80fbe
--- /dev/null
+++ b/app/core/gimpimage-convert-precision.c
@@ -0,0 +1,300 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpimage-convert-precision.c
+ * Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
+ *
+ * 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 <cairo.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpcolor/gimpcolor.h"
+
+#include "core-types.h"
+
+#include "gegl/gimp-babl.h"
+#include "gegl/gimp-gegl-loops.h"
+
+#include "gimpchannel.h"
+#include "gimpdrawable.h"
+#include "gimpdrawable-operation.h"
+#include "gimpimage.h"
+#include "gimpimage-color-profile.h"
+#include "gimpimage-convert-precision.h"
+#include "gimpimage-undo.h"
+#include "gimpimage-undo-push.h"
+#include "gimpobjectqueue.h"
+#include "gimpprogress.h"
+
+#include "text/gimptextlayer.h"
+
+#include "gimp-intl.h"
+
+
+void
+gimp_image_convert_precision (GimpImage        *image,
+                              GimpPrecision     precision,
+                              GeglDitherMethod  layer_dither_type,
+                              GeglDitherMethod  text_layer_dither_type,
+                              GeglDitherMethod  mask_dither_type,
+                              GimpProgress     *progress)
+{
+  GimpColorProfile *old_profile;
+  GimpColorProfile *new_profile = NULL;
+  const Babl       *old_format;
+  const Babl       *new_format;
+  GimpObjectQueue  *queue;
+  GimpProgress     *sub_progress;
+  GList            *layers;
+  GimpDrawable     *drawable;
+  const gchar      *undo_desc    = NULL;
+
+  g_return_if_fail (GIMP_IS_IMAGE (image));
+  g_return_if_fail (precision != gimp_image_get_precision (image));
+  g_return_if_fail (gimp_babl_is_valid (gimp_image_get_base_type (image),
+                                        precision));
+  g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
+
+  switch (precision)
+    {
+    case GIMP_PRECISION_U8_LINEAR:
+      undo_desc = C_("undo-type", "Convert Image to 8 bit linear integer");
+      break;
+    case GIMP_PRECISION_U8_GAMMA:
+      undo_desc = C_("undo-type", "Convert Image to 8 bit gamma integer");
+      break;
+    case GIMP_PRECISION_U16_LINEAR:
+      undo_desc = C_("undo-type", "Convert Image to 16 bit linear integer");
+      break;
+    case GIMP_PRECISION_U16_GAMMA:
+      undo_desc = C_("undo-type", "Convert Image to 16 bit gamma integer");
+      break;
+    case GIMP_PRECISION_U32_LINEAR:
+      undo_desc = C_("undo-type", "Convert Image to 32 bit linear integer");
+      break;
+    case GIMP_PRECISION_U32_GAMMA:
+      undo_desc = C_("undo-type", "Convert Image to 32 bit gamma integer");
+      break;
+    case GIMP_PRECISION_HALF_LINEAR:
+      undo_desc = C_("undo-type", "Convert Image to 16 bit linear floating point");
+      break;
+    case GIMP_PRECISION_HALF_GAMMA:
+      undo_desc = C_("undo-type", "Convert Image to 16 bit gamma floating point");
+      break;
+    case GIMP_PRECISION_FLOAT_LINEAR:
+      undo_desc = C_("undo-type", "Convert Image to 32 bit linear floating point");
+      break;
+    case GIMP_PRECISION_FLOAT_GAMMA:
+      undo_desc = C_("undo-type", "Convert Image to 32 bit gamma floating point");
+      break;
+    case GIMP_PRECISION_DOUBLE_LINEAR:
+      undo_desc = C_("undo-type", "Convert Image to 64 bit linear floating point");
+      break;
+    case GIMP_PRECISION_DOUBLE_GAMMA:
+      undo_desc = C_("undo-type", "Convert Image to 64 bit gamma floating point");
+      break;
+    }
+
+  if (progress)
+    gimp_progress_start (progress, FALSE, "%s", undo_desc);
+
+  queue        = gimp_object_queue_new (progress);
+  sub_progress = GIMP_PROGRESS (queue);
+
+  layers = gimp_image_get_layer_list (image);
+  gimp_object_queue_push_list (queue, layers);
+  g_list_free (layers);
+
+  gimp_object_queue_push (queue, gimp_image_get_mask (image));
+  gimp_object_queue_push_container (queue, gimp_image_get_channels (image));
+
+  g_object_freeze_notify (G_OBJECT (image));
+
+  gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_CONVERT,
+                               undo_desc);
+
+  /*  Push the image precision to the stack  */
+  gimp_image_undo_push_image_precision (image, NULL);
+
+  old_profile = gimp_image_get_color_profile (image);
+  old_format  = gimp_image_get_layer_format (image, FALSE);
+
+  /*  Set the new precision  */
+  g_object_set (image, "precision", precision, NULL);
+
+  new_format = gimp_image_get_layer_format (image, FALSE);
+
+  if (old_profile)
+    {
+      if (gimp_babl_format_get_linear (old_format) !=
+          gimp_babl_format_get_linear (new_format))
+        {
+          /* when converting between linear and gamma, we create a new
+           * profile using the original profile's chromacities and
+           * whitepoint, but a linear/sRGB-gamma TRC.
+           */
+
+          if (gimp_babl_format_get_linear (new_format))
+            {
+              new_profile =
+                gimp_color_profile_new_linear_from_color_profile (old_profile);
+            }
+          else
+            {
+              new_profile =
+                gimp_color_profile_new_srgb_trc_from_color_profile (old_profile);
+            }
+
+          /* if a new profile cannot be be generated, convert to the
+           * builtin profile, which is better than leaving the user with
+           * broken colors
+           */
+          if (! new_profile)
+            {
+              new_profile = gimp_image_get_builtin_color_profile (image);
+              g_object_ref (new_profile);
+            }
+        }
+
+      if (! new_profile)
+        new_profile = g_object_ref (old_profile);
+    }
+
+  while ((drawable = gimp_object_queue_pop (queue)))
+    {
+      if (drawable == GIMP_DRAWABLE (gimp_image_get_mask (image)))
+        {
+          GeglBuffer *buffer;
+
+          gimp_image_undo_push_mask_precision (image, NULL,
+                                               GIMP_CHANNEL (drawable));
+
+          buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+                                                    gimp_image_get_width  (image),
+                                                    gimp_image_get_height (image)),
+                                    gimp_image_get_mask_format (image));
+
+          gimp_gegl_buffer_copy (gimp_drawable_get_buffer (drawable), NULL,
+                                 GEGL_ABYSS_NONE,
+                                 buffer, NULL);
+
+          gimp_drawable_set_buffer (drawable, FALSE, NULL, buffer);
+          g_object_unref (buffer);
+
+          gimp_progress_set_value (sub_progress, 1.0);
+        }
+      else
+        {
+          gint dither_type;
+
+          if (gimp_item_is_text_layer (GIMP_ITEM (drawable)))
+            dither_type = text_layer_dither_type;
+          else
+            dither_type = layer_dither_type;
+
+          gimp_drawable_convert_type (drawable, image,
+                                      gimp_drawable_get_base_type (drawable),
+                                      precision,
+                                      gimp_drawable_has_alpha (drawable),
+                                      new_profile,
+                                      dither_type,
+                                      mask_dither_type,
+                                      TRUE, sub_progress);
+        }
+    }
+
+  if (new_profile)
+    {
+      if (new_profile != old_profile)
+        gimp_image_set_color_profile (image, new_profile, NULL);
+
+      g_object_unref (new_profile);
+    }
+
+  gimp_image_undo_group_end (image);
+
+  gimp_image_precision_changed (image);
+  g_object_thaw_notify (G_OBJECT (image));
+
+  g_object_unref (queue);
+
+  if (progress)
+    gimp_progress_end (progress);
+}
+
+void
+gimp_image_convert_dither_u8 (GimpImage    *image,
+                              GimpProgress *progress)
+{
+  GeglNode *dither;
+
+  g_return_if_fail (GIMP_IS_IMAGE (image));
+  g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
+
+  dither = gegl_node_new_child (NULL,
+                                "operation", "gegl:noise-rgb",
+                                "red",       1.0 / 256.0,
+                                "green",     1.0 / 256.0,
+                                "blue",      1.0 / 256.0,
+                                "linear",    FALSE,
+                                "gaussian",  FALSE,
+                                NULL);
+
+  if (dither)
+    {
+      GimpObjectQueue *queue;
+      GimpProgress    *sub_progress;
+      GList           *layers;
+      GList           *list;
+      GimpDrawable    *drawable;
+
+      if (progress)
+        gimp_progress_start (progress, FALSE, "%s", _("Dithering"));
+
+      queue        = gimp_object_queue_new (progress);
+      sub_progress = GIMP_PROGRESS (queue);
+
+      layers = gimp_image_get_layer_list (image);
+
+      for (list = layers; list; list = g_list_next (list))
+        {
+          if (! gimp_viewable_get_children (list->data) &&
+              ! gimp_item_is_text_layer (list->data))
+            {
+              gimp_object_queue_push (queue, list->data);
+            }
+        }
+
+      g_list_free (layers);
+
+      while ((drawable = gimp_object_queue_pop (queue)))
+        {
+          gimp_drawable_apply_operation (drawable, sub_progress,
+                                         _("Dithering"),
+                                         dither);
+        }
+
+      g_object_unref (queue);
+
+      if (progress)
+        gimp_progress_end (progress);
+
+      g_object_unref (dither);
+    }
+}