Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 1272 insertions, 0 deletions

diff --git a/app/paint/gimppaintoptions.c b/app/paint/gimppaintoptions.c
new file mode 100644
index 0000000..60c5959
--- /dev/null
+++ b/app/paint/gimppaintoptions.c
@@ -0,0 +1,1272 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
+ *
+ * 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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "paint-types.h"
+
+#include "core/gimp.h"
+#include "core/gimpbrush-header.h"
+#include "core/gimpbrushgenerated.h"
+#include "core/gimpimage.h"
+#include "core/gimpdynamics.h"
+#include "core/gimpdynamicsoutput.h"
+#include "core/gimpgradient.h"
+#include "core/gimppaintinfo.h"
+
+#include "gimpbrushcore.h"
+#include "gimppaintoptions.h"
+
+#include "gimp-intl.h"
+
+
+#define DEFAULT_BRUSH_SIZE              20.0
+#define DEFAULT_BRUSH_ASPECT_RATIO      0.0
+#define DEFAULT_BRUSH_ANGLE             0.0
+#define DEFAULT_BRUSH_SPACING           0.1
+#define DEFAULT_BRUSH_HARDNESS          1.0 /* Generated brushes have their own */
+#define DEFAULT_BRUSH_FORCE             0.5
+
+#define DEFAULT_BRUSH_LINK_SIZE         TRUE
+#define DEFAULT_BRUSH_LINK_ASPECT_RATIO TRUE
+#define DEFAULT_BRUSH_LINK_ANGLE        TRUE
+#define DEFAULT_BRUSH_LINK_SPACING      TRUE
+#define DEFAULT_BRUSH_LINK_HARDNESS     TRUE
+
+#define DEFAULT_BRUSH_LOCK_TO_VIEW      FALSE
+
+#define DEFAULT_APPLICATION_MODE        GIMP_PAINT_CONSTANT
+#define DEFAULT_HARD                    FALSE
+
+#define DEFAULT_USE_JITTER              FALSE
+#define DEFAULT_JITTER_AMOUNT           0.2
+
+#define DEFAULT_DYNAMICS_EXPANDED       FALSE
+
+#define DEFAULT_FADE_LENGTH             100.0
+#define DEFAULT_FADE_REVERSE            FALSE
+#define DEFAULT_FADE_REPEAT             GIMP_REPEAT_NONE
+#define DEFAULT_FADE_UNIT               GIMP_UNIT_PIXEL
+
+#define DEFAULT_GRADIENT_REVERSE        FALSE
+#define DEFAULT_GRADIENT_BLEND_SPACE    GIMP_GRADIENT_BLEND_RGB_PERCEPTUAL
+#define DEFAULT_GRADIENT_REPEAT         GIMP_REPEAT_NONE
+
+#define DYNAMIC_MAX_VALUE               1.0
+#define DYNAMIC_MIN_VALUE               0.0
+
+#define DEFAULT_SMOOTHING_QUALITY       20
+#define DEFAULT_SMOOTHING_FACTOR        50
+
+enum
+{
+  PROP_0,
+
+  PROP_PAINT_INFO,
+
+  PROP_USE_APPLICATOR, /* temp debug */
+
+  PROP_BRUSH_SIZE,
+  PROP_BRUSH_ASPECT_RATIO,
+  PROP_BRUSH_ANGLE,
+  PROP_BRUSH_SPACING,
+  PROP_BRUSH_HARDNESS,
+  PROP_BRUSH_FORCE,
+
+  PROP_BRUSH_LINK_SIZE,
+  PROP_BRUSH_LINK_ASPECT_RATIO,
+  PROP_BRUSH_LINK_ANGLE,
+  PROP_BRUSH_LINK_SPACING,
+  PROP_BRUSH_LINK_HARDNESS,
+
+  PROP_BRUSH_LOCK_TO_VIEW,
+
+  PROP_APPLICATION_MODE,
+  PROP_HARD,
+
+  PROP_USE_JITTER,
+  PROP_JITTER_AMOUNT,
+
+  PROP_DYNAMICS_EXPANDED,
+
+  PROP_FADE_LENGTH,
+  PROP_FADE_REVERSE,
+  PROP_FADE_REPEAT,
+  PROP_FADE_UNIT,
+
+  PROP_GRADIENT_REVERSE,
+  PROP_GRADIENT_BLEND_COLOR_SPACE,
+  PROP_GRADIENT_REPEAT,
+
+  PROP_BRUSH_VIEW_TYPE,
+  PROP_BRUSH_VIEW_SIZE,
+  PROP_DYNAMICS_VIEW_TYPE,
+  PROP_DYNAMICS_VIEW_SIZE,
+  PROP_PATTERN_VIEW_TYPE,
+  PROP_PATTERN_VIEW_SIZE,
+  PROP_GRADIENT_VIEW_TYPE,
+  PROP_GRADIENT_VIEW_SIZE,
+
+  PROP_USE_SMOOTHING,
+  PROP_SMOOTHING_QUALITY,
+  PROP_SMOOTHING_FACTOR
+};
+
+
+static void         gimp_paint_options_config_iface_init (GimpConfigInterface *config_iface);
+
+static void         gimp_paint_options_dispose           (GObject          *object);
+static void         gimp_paint_options_finalize          (GObject          *object);
+static void         gimp_paint_options_set_property      (GObject          *object,
+                                                          guint             property_id,
+                                                          const GValue     *value,
+                                                          GParamSpec       *pspec);
+static void         gimp_paint_options_get_property      (GObject          *object,
+                                                          guint             property_id,
+                                                          GValue           *value,
+                                                          GParamSpec       *pspec);
+
+static void         gimp_paint_options_brush_changed     (GimpContext      *context,
+                                                          GimpBrush        *brush);
+static void         gimp_paint_options_brush_notify      (GimpBrush        *brush,
+                                                          const GParamSpec *pspec,
+                                                          GimpPaintOptions *options);
+
+static GimpConfig * gimp_paint_options_duplicate         (GimpConfig       *config);
+static gboolean     gimp_paint_options_copy              (GimpConfig       *src,
+                                                          GimpConfig       *dest,
+                                                          GParamFlags       flags);
+static void         gimp_paint_options_reset             (GimpConfig       *config);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpPaintOptions, gimp_paint_options,
+                         GIMP_TYPE_TOOL_OPTIONS,
+                         G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONFIG,
+                                                gimp_paint_options_config_iface_init))
+
+#define parent_class gimp_paint_options_parent_class
+
+static GimpConfigInterface *parent_config_iface = NULL;
+
+
+static void
+gimp_paint_options_class_init (GimpPaintOptionsClass *klass)
+{
+  GObjectClass     *object_class  = G_OBJECT_CLASS (klass);
+  GimpContextClass *context_class = GIMP_CONTEXT_CLASS (klass);
+
+  object_class->dispose         = gimp_paint_options_dispose;
+  object_class->finalize        = gimp_paint_options_finalize;
+  object_class->set_property    = gimp_paint_options_set_property;
+  object_class->get_property    = gimp_paint_options_get_property;
+
+  context_class->brush_changed  = gimp_paint_options_brush_changed;
+
+  g_object_class_install_property (object_class, PROP_PAINT_INFO,
+                                   g_param_spec_object ("paint-info",
+                                                        NULL, NULL,
+                                                        GIMP_TYPE_PAINT_INFO,
+                                                        GIMP_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT_ONLY));
+
+  g_object_class_install_property (object_class, PROP_USE_APPLICATOR,
+                                   g_param_spec_boolean ("use-applicator",
+                                                         "Use GimpApplicator",
+                                                         NULL,
+                                                         FALSE,
+                                                         G_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT));
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_BRUSH_SIZE,
+                           "brush-size",
+                           _("Size"),
+                           _("Brush Size"),
+                           1.0, GIMP_BRUSH_MAX_SIZE, DEFAULT_BRUSH_SIZE,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_BRUSH_ASPECT_RATIO,
+                           "brush-aspect-ratio",
+                           _("Aspect Ratio"),
+                           _("Brush Aspect Ratio"),
+                           -20.0, 20.0, DEFAULT_BRUSH_ASPECT_RATIO,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_BRUSH_ANGLE,
+                           "brush-angle",
+                           _("Angle"),
+                           _("Brush Angle"),
+                           -180.0, 180.0, DEFAULT_BRUSH_ANGLE,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_BRUSH_SPACING,
+                           "brush-spacing",
+                           _("Spacing"),
+                           _("Brush Spacing"),
+                           0.01, 50.0, DEFAULT_BRUSH_SPACING,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_BRUSH_HARDNESS,
+                           "brush-hardness",
+                           _("Hardness"),
+                           _("Brush Hardness"),
+                           0.0, 1.0, DEFAULT_BRUSH_HARDNESS,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_BRUSH_FORCE,
+                           "brush-force",
+                           _("Force"),
+                           _("Brush Force"),
+                           0.0, 1.0, DEFAULT_BRUSH_FORCE,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_BRUSH_LINK_SIZE,
+                            "brush-link-size",
+                            _("Link Size"),
+                            _("Link brush size to brush native"),
+                            DEFAULT_BRUSH_LINK_SIZE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_BRUSH_LINK_ASPECT_RATIO,
+                            "brush-link-aspect-ratio",
+                            _("Link Aspect Ratio"),
+                            _("Link brush aspect ratio to brush native"),
+                            DEFAULT_BRUSH_LINK_ASPECT_RATIO,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_BRUSH_LINK_ANGLE,
+                            "brush-link-angle",
+                            _("Link Angle"),
+                            _("Link brush angle to brush native"),
+                            DEFAULT_BRUSH_LINK_ANGLE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_BRUSH_LINK_SPACING,
+                            "brush-link-spacing",
+                            _("Link Spacing"),
+                            _("Link brush spacing to brush native"),
+                            DEFAULT_BRUSH_LINK_SPACING,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_BRUSH_LINK_HARDNESS,
+                            "brush-link-hardness",
+                            _("Link Hardness"),
+                            _("Link brush hardness to brush native"),
+                            DEFAULT_BRUSH_LINK_HARDNESS,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_BRUSH_LOCK_TO_VIEW,
+                            "brush-lock-to-view",
+                            _("Lock brush to view"),
+                            _("Keep brush appearance fixed relative to the view"),
+                            DEFAULT_BRUSH_LOCK_TO_VIEW,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_APPLICATION_MODE,
+                         "application-mode",
+                         _("Incremental"),
+                         _("Every stamp has its own opacity"),
+                         GIMP_TYPE_PAINT_APPLICATION_MODE,
+                         DEFAULT_APPLICATION_MODE,
+                         GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_HARD,
+                            "hard",
+                            _("Hard edge"),
+                            _("Ignore fuzziness of the current brush"),
+                            DEFAULT_HARD,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_JITTER,
+                            "use-jitter",
+                            _("Apply Jitter"),
+                            _("Scatter brush as you paint"),
+                            DEFAULT_USE_JITTER,
+                            GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_JITTER_AMOUNT,
+                           "jitter-amount",
+                           _("Amount"),
+                           _("Distance of scattering"),
+                           0.0, 50.0, DEFAULT_JITTER_AMOUNT,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_DYNAMICS_EXPANDED,
+                            "dynamics-expanded",
+                            _("Dynamics Options"),
+                            NULL,
+                            DEFAULT_DYNAMICS_EXPANDED,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_FADE_LENGTH,
+                           "fade-length",
+                           _("Fade length"),
+                           _("Distance over which strokes fade out"),
+                           0.0, 32767.0, DEFAULT_FADE_LENGTH,
+                           GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_UNIT (object_class, PROP_FADE_UNIT,
+                         "fade-unit",
+                         NULL, NULL,
+                         TRUE, TRUE, DEFAULT_FADE_UNIT,
+                         GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_FADE_REVERSE,
+                            "fade-reverse",
+                            _("Reverse"),
+                            _("Reverse direction of fading"),
+                            DEFAULT_FADE_REVERSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_FADE_REPEAT,
+                         "fade-repeat",
+                         _("Repeat"),
+                         _("How fade is repeated as you paint"),
+                         GIMP_TYPE_REPEAT_MODE,
+                         DEFAULT_FADE_REPEAT,
+                         GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_GRADIENT_REVERSE,
+                            "gradient-reverse",
+                            NULL, NULL,
+                            DEFAULT_GRADIENT_REVERSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_GRADIENT_BLEND_COLOR_SPACE,
+                         "gradient-blend-color-space",
+                         _("Blend Color Space"),
+                         _("Which color space to use when blending RGB gradient segments"),
+                         GIMP_TYPE_GRADIENT_BLEND_COLOR_SPACE,
+                         DEFAULT_GRADIENT_BLEND_SPACE,
+                         GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_GRADIENT_REPEAT,
+                         "gradient-repeat",
+                         _("Repeat"),
+                         NULL,
+                         GIMP_TYPE_REPEAT_MODE,
+                         DEFAULT_GRADIENT_REPEAT,
+                         GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_BRUSH_VIEW_TYPE,
+                         "brush-view-type",
+                         NULL, NULL,
+                         GIMP_TYPE_VIEW_TYPE,
+                         GIMP_VIEW_TYPE_GRID,
+                         GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_INT (object_class, PROP_BRUSH_VIEW_SIZE,
+                        "brush-view-size",
+                        NULL, NULL,
+                        GIMP_VIEW_SIZE_TINY,
+                        GIMP_VIEWABLE_MAX_BUTTON_SIZE,
+                        GIMP_VIEW_SIZE_SMALL,
+                        GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_DYNAMICS_VIEW_TYPE,
+                         "dynamics-view-type",
+                         NULL, NULL,
+                         GIMP_TYPE_VIEW_TYPE,
+                         GIMP_VIEW_TYPE_LIST,
+                         GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_INT (object_class, PROP_DYNAMICS_VIEW_SIZE,
+                        "dynamics-view-size",
+                        NULL, NULL,
+                        GIMP_VIEW_SIZE_TINY,
+                        GIMP_VIEWABLE_MAX_BUTTON_SIZE,
+                        GIMP_VIEW_SIZE_SMALL,
+                        GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_PATTERN_VIEW_TYPE,
+                         "pattern-view-type",
+                         NULL, NULL,
+                         GIMP_TYPE_VIEW_TYPE,
+                         GIMP_VIEW_TYPE_GRID,
+                         GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_INT (object_class, PROP_PATTERN_VIEW_SIZE,
+                        "pattern-view-size",
+                        NULL, NULL,
+                        GIMP_VIEW_SIZE_TINY,
+                        GIMP_VIEWABLE_MAX_BUTTON_SIZE,
+                        GIMP_VIEW_SIZE_SMALL,
+                        GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_GRADIENT_VIEW_TYPE,
+                         "gradient-view-type",
+                         NULL, NULL,
+                         GIMP_TYPE_VIEW_TYPE,
+                         GIMP_VIEW_TYPE_LIST,
+                         GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_INT (object_class, PROP_GRADIENT_VIEW_SIZE,
+                        "gradient-view-size",
+                        NULL, NULL,
+                        GIMP_VIEW_SIZE_TINY,
+                        GIMP_VIEWABLE_MAX_BUTTON_SIZE,
+                        GIMP_VIEW_SIZE_LARGE,
+                        GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_USE_SMOOTHING,
+                            "use-smoothing",
+                            _("Smooth stroke"),
+                            _("Paint smoother strokes"),
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_INT (object_class, PROP_SMOOTHING_QUALITY,
+                        "smoothing-quality",
+                        _("Quality"),
+                        _("Depth of smoothing"),
+                        1, 100, DEFAULT_SMOOTHING_QUALITY,
+                        GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_SMOOTHING_FACTOR,
+                           "smoothing-factor",
+                           _("Weight"),
+                           _("Gravity of the pen"),
+                           /* Max velocity is set to 3; allowing for
+                            * smoothing factor to be less than velcoty
+                            * results in numeric instablility
+                            */
+                           3.0, 1000.0, DEFAULT_SMOOTHING_FACTOR,
+                           GIMP_PARAM_STATIC_STRINGS);
+}
+
+static void
+gimp_paint_options_config_iface_init (GimpConfigInterface *config_iface)
+{
+  parent_config_iface = g_type_interface_peek_parent (config_iface);
+
+  if (! parent_config_iface)
+    parent_config_iface = g_type_default_interface_peek (GIMP_TYPE_CONFIG);
+
+  config_iface->duplicate = gimp_paint_options_duplicate;
+  config_iface->copy      = gimp_paint_options_copy;
+  config_iface->reset     = gimp_paint_options_reset;
+}
+
+static void
+gimp_paint_options_init (GimpPaintOptions *options)
+{
+  options->application_mode_save = DEFAULT_APPLICATION_MODE;
+
+  options->jitter_options    = g_slice_new0 (GimpJitterOptions);
+  options->fade_options      = g_slice_new0 (GimpFadeOptions);
+  options->gradient_options  = g_slice_new0 (GimpGradientPaintOptions);
+  options->smoothing_options = g_slice_new0 (GimpSmoothingOptions);
+}
+
+static void
+gimp_paint_options_dispose (GObject *object)
+{
+  GimpPaintOptions *options = GIMP_PAINT_OPTIONS (object);
+
+  g_clear_object (&options->paint_info);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_paint_options_finalize (GObject *object)
+{
+  GimpPaintOptions *options = GIMP_PAINT_OPTIONS (object);
+
+  g_slice_free (GimpJitterOptions,        options->jitter_options);
+  g_slice_free (GimpFadeOptions,          options->fade_options);
+  g_slice_free (GimpGradientPaintOptions, options->gradient_options);
+  g_slice_free (GimpSmoothingOptions,     options->smoothing_options);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_paint_options_set_property (GObject      *object,
+                                 guint         property_id,
+                                 const GValue *value,
+                                 GParamSpec   *pspec)
+{
+  GimpPaintOptions         *options           = GIMP_PAINT_OPTIONS (object);
+  GimpFadeOptions          *fade_options      = options->fade_options;
+  GimpJitterOptions        *jitter_options    = options->jitter_options;
+  GimpGradientPaintOptions *gradient_options  = options->gradient_options;
+  GimpSmoothingOptions     *smoothing_options = options->smoothing_options;
+
+  switch (property_id)
+    {
+    case PROP_PAINT_INFO:
+      options->paint_info = g_value_dup_object (value);
+      break;
+
+    case PROP_USE_APPLICATOR:
+      options->use_applicator = g_value_get_boolean (value);
+      break;
+
+    case PROP_BRUSH_SIZE:
+      options->brush_size = g_value_get_double (value);
+      break;
+    case PROP_BRUSH_ASPECT_RATIO:
+      options->brush_aspect_ratio = g_value_get_double (value);
+      break;
+    case PROP_BRUSH_ANGLE:
+      options->brush_angle = - 1.0 * g_value_get_double (value) / 360.0; /* let's make the angle mathematically correct */
+      break;
+    case PROP_BRUSH_SPACING:
+      options->brush_spacing = g_value_get_double (value);
+      break;
+    case PROP_BRUSH_HARDNESS:
+      options->brush_hardness = g_value_get_double (value);
+      break;
+    case PROP_BRUSH_FORCE:
+      options->brush_force = g_value_get_double (value);
+      break;
+
+    case PROP_BRUSH_LINK_SIZE:
+      options->brush_link_size = g_value_get_boolean (value);
+      break;
+    case PROP_BRUSH_LINK_ASPECT_RATIO:
+      options->brush_link_aspect_ratio = g_value_get_boolean (value);
+      break;
+    case PROP_BRUSH_LINK_ANGLE:
+      options->brush_link_angle = g_value_get_boolean (value);
+      break;
+    case PROP_BRUSH_LINK_SPACING:
+      options->brush_link_spacing = g_value_get_boolean (value);
+      break;
+    case PROP_BRUSH_LINK_HARDNESS:
+      options->brush_link_hardness = g_value_get_boolean (value);
+      break;
+
+    case PROP_BRUSH_LOCK_TO_VIEW:
+      options->brush_lock_to_view = g_value_get_boolean (value);
+      break;
+
+    case PROP_APPLICATION_MODE:
+      options->application_mode = g_value_get_enum (value);
+      break;
+    case PROP_HARD:
+      options->hard = g_value_get_boolean (value);
+      break;
+
+    case PROP_USE_JITTER:
+      jitter_options->use_jitter = g_value_get_boolean (value);
+      break;
+    case PROP_JITTER_AMOUNT:
+      jitter_options->jitter_amount = g_value_get_double (value);
+      break;
+
+    case PROP_DYNAMICS_EXPANDED:
+      options->dynamics_expanded = g_value_get_boolean (value);
+      break;
+
+    case PROP_FADE_LENGTH:
+      fade_options->fade_length = g_value_get_double (value);
+      break;
+    case PROP_FADE_REVERSE:
+      fade_options->fade_reverse = g_value_get_boolean (value);
+      break;
+    case PROP_FADE_REPEAT:
+      fade_options->fade_repeat = g_value_get_enum (value);
+      break;
+    case PROP_FADE_UNIT:
+      fade_options->fade_unit = g_value_get_int (value);
+      break;
+
+    case PROP_GRADIENT_REVERSE:
+      gradient_options->gradient_reverse = g_value_get_boolean (value);
+      break;
+    case PROP_GRADIENT_BLEND_COLOR_SPACE:
+      gradient_options->gradient_blend_color_space = g_value_get_enum (value);
+      break;
+    case PROP_GRADIENT_REPEAT:
+      gradient_options->gradient_repeat = g_value_get_enum (value);
+      break;
+
+    case PROP_BRUSH_VIEW_TYPE:
+      options->brush_view_type = g_value_get_enum (value);
+      break;
+    case PROP_BRUSH_VIEW_SIZE:
+      options->brush_view_size = g_value_get_int (value);
+      break;
+
+    case PROP_DYNAMICS_VIEW_TYPE:
+      options->dynamics_view_type = g_value_get_enum (value);
+      break;
+    case PROP_DYNAMICS_VIEW_SIZE:
+      options->dynamics_view_size = g_value_get_int (value);
+      break;
+
+    case PROP_PATTERN_VIEW_TYPE:
+      options->pattern_view_type = g_value_get_enum (value);
+      break;
+    case PROP_PATTERN_VIEW_SIZE:
+      options->pattern_view_size = g_value_get_int (value);
+      break;
+
+    case PROP_GRADIENT_VIEW_TYPE:
+      options->gradient_view_type = g_value_get_enum (value);
+      break;
+    case PROP_GRADIENT_VIEW_SIZE:
+      options->gradient_view_size = g_value_get_int (value);
+      break;
+
+    case PROP_USE_SMOOTHING:
+      smoothing_options->use_smoothing = g_value_get_boolean (value);
+      break;
+    case PROP_SMOOTHING_QUALITY:
+      smoothing_options->smoothing_quality = g_value_get_int (value);
+      break;
+    case PROP_SMOOTHING_FACTOR:
+      smoothing_options->smoothing_factor = g_value_get_double (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_paint_options_get_property (GObject    *object,
+                                 guint       property_id,
+                                 GValue     *value,
+                                 GParamSpec *pspec)
+{
+  GimpPaintOptions         *options           = GIMP_PAINT_OPTIONS (object);
+  GimpFadeOptions          *fade_options      = options->fade_options;
+  GimpJitterOptions        *jitter_options    = options->jitter_options;
+  GimpGradientPaintOptions *gradient_options  = options->gradient_options;
+  GimpSmoothingOptions     *smoothing_options = options->smoothing_options;
+
+  switch (property_id)
+    {
+    case PROP_PAINT_INFO:
+      g_value_set_object (value, options->paint_info);
+      break;
+
+    case PROP_USE_APPLICATOR:
+      g_value_set_boolean (value, options->use_applicator);
+      break;
+
+    case PROP_BRUSH_SIZE:
+      g_value_set_double (value, options->brush_size);
+      break;
+    case PROP_BRUSH_ASPECT_RATIO:
+      g_value_set_double (value, options->brush_aspect_ratio);
+      break;
+    case PROP_BRUSH_ANGLE:
+      g_value_set_double (value, - 1.0 * options->brush_angle * 360.0); /* mathematically correct -> intuitively correct */
+      break;
+    case PROP_BRUSH_SPACING:
+      g_value_set_double (value, options->brush_spacing);
+      break;
+    case PROP_BRUSH_HARDNESS:
+      g_value_set_double (value, options->brush_hardness);
+      break;
+    case PROP_BRUSH_FORCE:
+      g_value_set_double (value, options->brush_force);
+      break;
+
+    case PROP_BRUSH_LINK_SIZE:
+      g_value_set_boolean (value, options->brush_link_size);
+      break;
+    case PROP_BRUSH_LINK_ASPECT_RATIO:
+      g_value_set_boolean (value, options->brush_link_aspect_ratio);
+      break;
+    case PROP_BRUSH_LINK_ANGLE:
+      g_value_set_boolean (value, options->brush_link_angle);
+      break;
+    case PROP_BRUSH_LINK_SPACING:
+      g_value_set_boolean (value, options->brush_link_spacing);
+      break;
+    case PROP_BRUSH_LINK_HARDNESS:
+      g_value_set_boolean (value, options->brush_link_hardness);
+      break;
+
+    case PROP_BRUSH_LOCK_TO_VIEW:
+      g_value_set_boolean (value, options->brush_lock_to_view);
+      break;
+
+    case PROP_APPLICATION_MODE:
+      g_value_set_enum (value, options->application_mode);
+      break;
+    case PROP_HARD:
+      g_value_set_boolean (value, options->hard);
+      break;
+
+    case PROP_USE_JITTER:
+      g_value_set_boolean (value, jitter_options->use_jitter);
+      break;
+    case PROP_JITTER_AMOUNT:
+      g_value_set_double (value, jitter_options->jitter_amount);
+      break;
+
+    case PROP_DYNAMICS_EXPANDED:
+      g_value_set_boolean (value, options->dynamics_expanded);
+      break;
+
+    case PROP_FADE_LENGTH:
+      g_value_set_double (value, fade_options->fade_length);
+      break;
+    case PROP_FADE_REVERSE:
+      g_value_set_boolean (value, fade_options->fade_reverse);
+      break;
+    case PROP_FADE_REPEAT:
+      g_value_set_enum (value, fade_options->fade_repeat);
+      break;
+    case PROP_FADE_UNIT:
+      g_value_set_int (value, fade_options->fade_unit);
+      break;
+
+    case PROP_GRADIENT_REVERSE:
+      g_value_set_boolean (value, gradient_options->gradient_reverse);
+      break;
+    case PROP_GRADIENT_BLEND_COLOR_SPACE:
+      g_value_set_enum (value, gradient_options->gradient_blend_color_space);
+      break;
+    case PROP_GRADIENT_REPEAT:
+      g_value_set_enum (value, gradient_options->gradient_repeat);
+      break;
+
+    case PROP_BRUSH_VIEW_TYPE:
+      g_value_set_enum (value, options->brush_view_type);
+      break;
+    case PROP_BRUSH_VIEW_SIZE:
+      g_value_set_int (value, options->brush_view_size);
+      break;
+
+    case PROP_DYNAMICS_VIEW_TYPE:
+      g_value_set_enum (value, options->dynamics_view_type);
+      break;
+    case PROP_DYNAMICS_VIEW_SIZE:
+      g_value_set_int (value, options->dynamics_view_size);
+      break;
+
+    case PROP_PATTERN_VIEW_TYPE:
+      g_value_set_enum (value, options->pattern_view_type);
+      break;
+    case PROP_PATTERN_VIEW_SIZE:
+      g_value_set_int (value, options->pattern_view_size);
+      break;
+
+    case PROP_GRADIENT_VIEW_TYPE:
+      g_value_set_enum (value, options->gradient_view_type);
+      break;
+    case PROP_GRADIENT_VIEW_SIZE:
+      g_value_set_int (value, options->gradient_view_size);
+      break;
+
+    case PROP_USE_SMOOTHING:
+      g_value_set_boolean (value, smoothing_options->use_smoothing);
+      break;
+    case PROP_SMOOTHING_QUALITY:
+      g_value_set_int (value, smoothing_options->smoothing_quality);
+      break;
+    case PROP_SMOOTHING_FACTOR:
+      g_value_set_double (value, smoothing_options->smoothing_factor);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_paint_options_brush_changed (GimpContext *context,
+                                  GimpBrush   *brush)
+{
+  GimpPaintOptions *options = GIMP_PAINT_OPTIONS (context);
+
+  if (options->paint_info &&
+      g_type_is_a (options->paint_info->paint_type,
+                   GIMP_TYPE_BRUSH_CORE))
+    {
+      if (options->brush)
+        {
+          g_signal_handlers_disconnect_by_func (options->brush,
+                                                gimp_paint_options_brush_notify,
+                                                options);
+          g_object_remove_weak_pointer (G_OBJECT (options->brush),
+                                        (gpointer) &options->brush);
+        }
+
+      options->brush = brush;
+
+      if (options->brush)
+        {
+          g_object_add_weak_pointer (G_OBJECT (options->brush),
+                                     (gpointer) &options->brush);
+          g_signal_connect_object (options->brush, "notify",
+                                   G_CALLBACK (gimp_paint_options_brush_notify),
+                                   options, 0);
+
+          gimp_paint_options_brush_notify (options->brush, NULL, options);
+        }
+    }
+}
+
+static void
+gimp_paint_options_brush_notify (GimpBrush        *brush,
+                                 const GParamSpec *pspec,
+                                 GimpPaintOptions *options)
+{
+  if (gimp_tool_options_get_gui_mode (GIMP_TOOL_OPTIONS (options)))
+    {
+#define IS_PSPEC(p,n) (p == NULL || ! strcmp (n, p->name))
+
+      if (options->brush_link_size && IS_PSPEC (pspec, "radius"))
+        gimp_paint_options_set_default_brush_size (options, brush);
+
+      if (options->brush_link_aspect_ratio && IS_PSPEC (pspec, "aspect-ratio"))
+        gimp_paint_options_set_default_brush_aspect_ratio (options, brush);
+
+      if (options->brush_link_angle && IS_PSPEC (pspec, "angle"))
+        gimp_paint_options_set_default_brush_angle (options, brush);
+
+      if (options->brush_link_spacing && IS_PSPEC (pspec, "spacing"))
+        gimp_paint_options_set_default_brush_spacing (options, brush);
+
+      if (options->brush_link_hardness && IS_PSPEC (pspec, "hardness"))
+        gimp_paint_options_set_default_brush_hardness (options, brush);
+
+#undef IS_SPEC
+    }
+}
+
+static GimpConfig *
+gimp_paint_options_duplicate (GimpConfig *config)
+{
+  return parent_config_iface->duplicate (config);
+}
+
+static gboolean
+gimp_paint_options_copy (GimpConfig  *src,
+                         GimpConfig  *dest,
+                         GParamFlags  flags)
+{
+  return parent_config_iface->copy (src, dest, flags);
+}
+
+static void
+gimp_paint_options_reset (GimpConfig *config)
+{
+  GimpBrush *brush = gimp_context_get_brush (GIMP_CONTEXT (config));
+
+  parent_config_iface->reset (config);
+
+  if (brush)
+    {
+      gimp_paint_options_set_default_brush_size (GIMP_PAINT_OPTIONS (config),
+                                                 brush);
+      gimp_paint_options_set_default_brush_hardness (GIMP_PAINT_OPTIONS (config),
+                                                     brush);
+      gimp_paint_options_set_default_brush_aspect_ratio (GIMP_PAINT_OPTIONS (config),
+                                                         brush);
+      gimp_paint_options_set_default_brush_angle (GIMP_PAINT_OPTIONS (config),
+                                                  brush);
+      gimp_paint_options_set_default_brush_spacing (GIMP_PAINT_OPTIONS (config),
+                                                    brush);
+    }
+}
+
+GimpPaintOptions *
+gimp_paint_options_new (GimpPaintInfo *paint_info)
+{
+  GimpPaintOptions *options;
+
+  g_return_val_if_fail (GIMP_IS_PAINT_INFO (paint_info), NULL);
+
+  options = g_object_new (paint_info->paint_options_type,
+                          "gimp",       paint_info->gimp,
+                          "name",       gimp_object_get_name (paint_info),
+                          "paint-info", paint_info,
+                          NULL);
+
+  return options;
+}
+
+gdouble
+gimp_paint_options_get_fade (GimpPaintOptions *paint_options,
+                             GimpImage        *image,
+                             gdouble           pixel_dist)
+{
+  GimpFadeOptions *fade_options;
+  gdouble          z        = -1.0;
+  gdouble          fade_out =  0.0;
+  gdouble          unit_factor;
+  gdouble          pos;
+
+  g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options),
+                        DYNAMIC_MAX_VALUE);
+  g_return_val_if_fail (GIMP_IS_IMAGE (image), DYNAMIC_MAX_VALUE);
+
+  fade_options = paint_options->fade_options;
+
+  switch (fade_options->fade_unit)
+    {
+    case GIMP_UNIT_PIXEL:
+      fade_out = fade_options->fade_length;
+      break;
+
+    case GIMP_UNIT_PERCENT:
+      fade_out = (MAX (gimp_image_get_width  (image),
+                       gimp_image_get_height (image)) *
+                  fade_options->fade_length / 100);
+      break;
+
+    default:
+      {
+        gdouble xres;
+        gdouble yres;
+
+        gimp_image_get_resolution (image, &xres, &yres);
+
+        unit_factor = gimp_unit_get_factor (fade_options->fade_unit);
+        fade_out    = (fade_options->fade_length *
+                       MAX (xres, yres) / unit_factor);
+      }
+      break;
+    }
+
+  /*  factor in the fade out value  */
+  if (fade_out > 0.0)
+    {
+      pos = pixel_dist / fade_out;
+    }
+  else
+    pos = DYNAMIC_MAX_VALUE;
+
+  /*  for no repeat, set pos close to 1.0 after the first chunk  */
+  if (fade_options->fade_repeat == GIMP_REPEAT_NONE && pos >= DYNAMIC_MAX_VALUE)
+    pos = DYNAMIC_MAX_VALUE - 0.0000001;
+
+  if (((gint) pos & 1) &&
+      fade_options->fade_repeat != GIMP_REPEAT_SAWTOOTH)
+    pos = DYNAMIC_MAX_VALUE - (pos - (gint) pos);
+  else
+    pos = pos - (gint) pos;
+
+  z = pos;
+
+  if (fade_options->fade_reverse)
+    z = 1.0 - z;
+
+  return z;    /*  ln (1/255)  */
+}
+
+gdouble
+gimp_paint_options_get_jitter (GimpPaintOptions *paint_options,
+                               GimpImage        *image)
+{
+  GimpJitterOptions *jitter_options;
+
+  g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), 0.0);
+
+  jitter_options = paint_options->jitter_options;
+
+  if (jitter_options->use_jitter)
+    {
+      return jitter_options->jitter_amount;
+    }
+
+  return 0.0;
+}
+
+gboolean
+gimp_paint_options_get_gradient_color (GimpPaintOptions *paint_options,
+                                       GimpImage        *image,
+                                       gdouble           grad_point,
+                                       gdouble           pixel_dist,
+                                       GimpRGB          *color)
+{
+  GimpDynamics *dynamics;
+
+  g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
+  g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
+  g_return_val_if_fail (color != NULL, FALSE);
+
+  dynamics = gimp_context_get_dynamics (GIMP_CONTEXT (paint_options));
+
+  if (gimp_dynamics_is_output_enabled (dynamics, GIMP_DYNAMICS_OUTPUT_COLOR))
+    {
+      GimpGradientPaintOptions *gradient_options = paint_options->gradient_options;
+      GimpGradient             *gradient;
+
+      gradient = gimp_context_get_gradient (GIMP_CONTEXT (paint_options));
+
+      gimp_gradient_get_color_at (gradient, GIMP_CONTEXT (paint_options),
+                                  NULL, grad_point,
+                                  gradient_options->gradient_reverse,
+                                  gradient_options->gradient_blend_color_space,
+                                  color);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+GimpBrushApplicationMode
+gimp_paint_options_get_brush_mode (GimpPaintOptions *paint_options)
+{
+  GimpDynamics *dynamics;
+  gboolean      dynamic_force = FALSE;
+
+  g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), GIMP_BRUSH_SOFT);
+
+  if (paint_options->hard)
+    return GIMP_BRUSH_HARD;
+
+  dynamics = gimp_context_get_dynamics (GIMP_CONTEXT (paint_options));
+
+  dynamic_force = gimp_dynamics_is_output_enabled (dynamics,
+                                                   GIMP_DYNAMICS_OUTPUT_FORCE);
+
+  if (dynamic_force || (paint_options->brush_force != 0.5))
+    return GIMP_BRUSH_PRESSURE;
+
+  return GIMP_BRUSH_SOFT;
+}
+
+void
+gimp_paint_options_set_default_brush_size (GimpPaintOptions *paint_options,
+                                           GimpBrush        *brush)
+{
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options));
+  g_return_if_fail (brush == NULL || GIMP_IS_BRUSH (brush));
+
+  if (! brush)
+    brush = gimp_context_get_brush (GIMP_CONTEXT (paint_options));
+
+  if (brush)
+    {
+      gint height;
+      gint width;
+
+      gimp_brush_transform_size (brush, 1.0, 0.0, 0.0, FALSE, &width, &height);
+
+      g_object_set (paint_options,
+                    "brush-size", (gdouble) MAX (height, width),
+                    NULL);
+    }
+}
+
+void
+gimp_paint_options_set_default_brush_angle (GimpPaintOptions *paint_options,
+                                            GimpBrush        *brush)
+{
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options));
+  g_return_if_fail (brush == NULL || GIMP_IS_BRUSH (brush));
+
+  if (! brush)
+    brush = gimp_context_get_brush (GIMP_CONTEXT (paint_options));
+
+  if (GIMP_IS_BRUSH_GENERATED (brush))
+    {
+      GimpBrushGenerated *generated_brush = GIMP_BRUSH_GENERATED (brush);
+
+      g_object_set (paint_options,
+                    "brush-angle", (gdouble) gimp_brush_generated_get_angle (generated_brush),
+                    NULL);
+    }
+  else
+    {
+      g_object_set (paint_options,
+                    "brush-angle", DEFAULT_BRUSH_ANGLE,
+                    NULL);
+    }
+}
+
+void
+gimp_paint_options_set_default_brush_aspect_ratio (GimpPaintOptions *paint_options,
+                                                   GimpBrush        *brush)
+{
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options));
+  g_return_if_fail (brush == NULL || GIMP_IS_BRUSH (brush));
+
+  if (! brush)
+    brush = gimp_context_get_brush (GIMP_CONTEXT (paint_options));
+
+  if (GIMP_IS_BRUSH_GENERATED (brush))
+    {
+      GimpBrushGenerated *generated_brush = GIMP_BRUSH_GENERATED (brush);
+      gdouble             ratio;
+
+      ratio = gimp_brush_generated_get_aspect_ratio (generated_brush);
+
+      ratio = (ratio - 1.0) * 20.0 / 19.0;
+
+      g_object_set (paint_options,
+                    "brush-aspect-ratio", ratio,
+                    NULL);
+    }
+  else
+    {
+      g_object_set (paint_options,
+                    "brush-aspect-ratio", DEFAULT_BRUSH_ASPECT_RATIO,
+                    NULL);
+    }
+}
+
+void
+gimp_paint_options_set_default_brush_spacing (GimpPaintOptions *paint_options,
+                                              GimpBrush        *brush)
+{
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options));
+  g_return_if_fail (brush == NULL || GIMP_IS_BRUSH (brush));
+
+  if (! brush)
+    brush = gimp_context_get_brush (GIMP_CONTEXT (paint_options));
+
+  if (brush)
+    {
+      g_object_set (paint_options,
+                    "brush-spacing", (gdouble) gimp_brush_get_spacing (brush) / 100.0,
+                    NULL);
+    }
+}
+
+void
+gimp_paint_options_set_default_brush_hardness (GimpPaintOptions *paint_options,
+                                               GimpBrush        *brush)
+{
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options));
+  g_return_if_fail (brush == NULL || GIMP_IS_BRUSH (brush));
+
+  if (! brush)
+    brush = gimp_context_get_brush (GIMP_CONTEXT (paint_options));
+
+  if (GIMP_IS_BRUSH_GENERATED (brush))
+    {
+      GimpBrushGenerated *generated_brush = GIMP_BRUSH_GENERATED (brush);
+
+      g_object_set (paint_options,
+                    "brush-hardness", (gdouble) gimp_brush_generated_get_hardness (generated_brush),
+                    NULL);
+    }
+  else
+    {
+      g_object_set (paint_options,
+                    "brush-hardness", DEFAULT_BRUSH_HARDNESS,
+                    NULL);
+    }
+}
+
+static const gchar *brush_props[] =
+{
+  "brush-size",
+  "brush-angle",
+  "brush-aspect-ratio",
+  "brush-spacing",
+  "brush-hardness",
+  "brush-force",
+  "brush-link-size",
+  "brush-link-angle",
+  "brush-link-aspect-ratio",
+  "brush-link-spacing",
+  "brush-link-hardness",
+  "brush-lock-to-view"
+};
+
+static const gchar *dynamics_props[] =
+{
+  "dynamics-expanded",
+  "fade-reverse",
+  "fade-length",
+  "fade-unit",
+  "fade-repeat"
+};
+
+static const gchar *gradient_props[] =
+{
+  "gradient-reverse",
+  "gradient-blend-color-space",
+  "gradient-repeat"
+};
+
+static const gint max_n_props = (G_N_ELEMENTS (brush_props) +
+                                 G_N_ELEMENTS (dynamics_props) +
+                                 G_N_ELEMENTS (gradient_props));
+
+gboolean
+gimp_paint_options_is_prop (const gchar         *prop_name,
+                            GimpContextPropMask  prop_mask)
+{
+  gint i;
+
+  g_return_val_if_fail (prop_name != NULL, FALSE);
+
+  if (prop_mask & GIMP_CONTEXT_PROP_MASK_BRUSH)
+    {
+      for (i = 0; i < G_N_ELEMENTS (brush_props); i++)
+        if (! strcmp (prop_name, brush_props[i]))
+          return TRUE;
+    }
+
+  if (prop_mask & GIMP_CONTEXT_PROP_MASK_DYNAMICS)
+    {
+      for (i = 0; i < G_N_ELEMENTS (dynamics_props); i++)
+        if (! strcmp (prop_name, dynamics_props[i]))
+          return TRUE;
+    }
+
+  if (prop_mask & GIMP_CONTEXT_PROP_MASK_GRADIENT)
+    {
+      for (i = 0; i < G_N_ELEMENTS (gradient_props); i++)
+        if (! strcmp (prop_name, gradient_props[i]))
+          return TRUE;
+    }
+
+  return FALSE;
+}
+
+void
+gimp_paint_options_copy_props (GimpPaintOptions    *src,
+                               GimpPaintOptions    *dest,
+                               GimpContextPropMask  prop_mask)
+{
+  const gchar *names[max_n_props];
+  GValue       values[max_n_props];
+  gint         n_props = 0;
+  gint         i;
+
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (src));
+  g_return_if_fail (GIMP_IS_PAINT_OPTIONS (dest));
+
+  if (prop_mask & GIMP_CONTEXT_PROP_MASK_BRUSH)
+    {
+      for (i = 0; i < G_N_ELEMENTS (brush_props); i++)
+        names[n_props++] = brush_props[i];
+    }
+
+  if (prop_mask & GIMP_CONTEXT_PROP_MASK_DYNAMICS)
+    {
+      for (i = 0; i < G_N_ELEMENTS (dynamics_props); i++)
+        names[n_props++] = dynamics_props[i];
+    }
+
+  if (prop_mask & GIMP_CONTEXT_PROP_MASK_GRADIENT)
+    {
+      for (i = 0; i < G_N_ELEMENTS (gradient_props); i++)
+        names[n_props++] = gradient_props[i];
+    }
+
+  if (n_props > 0)
+    {
+      g_object_getv (G_OBJECT (src), n_props, names, values);
+      g_object_setv (G_OBJECT (dest), n_props, names, values);
+
+      while (n_props--)
+        g_value_unset (&values[n_props]);
+    }
+}