Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 712 insertions, 0 deletions

diff --git a/app/tools/gimptransformgridoptions.c b/app/tools/gimptransformgridoptions.c
new file mode 100644
index 0000000..c8d0b09
--- /dev/null
+++ b/app/tools/gimptransformgridoptions.c
@@ -0,0 +1,712 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "core/gimp.h"
+#include "core/gimptoolinfo.h"
+
+#include "widgets/gimppropwidgets.h"
+#include "widgets/gimpspinscale.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "gimpperspectivetool.h"
+#include "gimprotatetool.h"
+#include "gimpscaletool.h"
+#include "gimpunifiedtransformtool.h"
+#include "gimptooloptions-gui.h"
+#include "gimptransformgridoptions.h"
+#include "gimptransformgridtool.h"
+
+#include "gimp-intl.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_DIRECTION,
+  PROP_DIRECTION_LINKED,
+  PROP_SHOW_PREVIEW,
+  PROP_COMPOSITED_PREVIEW,
+  PROP_PREVIEW_LINKED,
+  PROP_SYNCHRONOUS_PREVIEW,
+  PROP_PREVIEW_OPACITY,
+  PROP_GRID_TYPE,
+  PROP_GRID_SIZE,
+  PROP_CONSTRAIN_MOVE,
+  PROP_CONSTRAIN_SCALE,
+  PROP_CONSTRAIN_ROTATE,
+  PROP_CONSTRAIN_SHEAR,
+  PROP_CONSTRAIN_PERSPECTIVE,
+  PROP_FROMPIVOT_SCALE,
+  PROP_FROMPIVOT_SHEAR,
+  PROP_FROMPIVOT_PERSPECTIVE,
+  PROP_CORNERSNAP,
+  PROP_FIXEDPIVOT,
+};
+
+
+static void       gimp_transform_grid_options_set_property (GObject      *object,
+                                                            guint         property_id,
+                                                            const GValue *value,
+                                                            GParamSpec   *pspec);
+static void       gimp_transform_grid_options_get_property (GObject      *object,
+                                                            guint         property_id,
+                                                            GValue       *value,
+                                                            GParamSpec   *pspec);
+
+static gboolean   gimp_transform_grid_options_sync_grid    (GBinding     *binding,
+                                                            const GValue *source_value,
+                                                            GValue       *target_value,
+                                                            gpointer      user_data);
+
+
+G_DEFINE_TYPE (GimpTransformGridOptions, gimp_transform_grid_options,
+               GIMP_TYPE_TRANSFORM_OPTIONS)
+
+#define parent_class gimp_transform_grid_options_parent_class
+
+
+static void
+gimp_transform_grid_options_class_init (GimpTransformGridOptionsClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->set_property = gimp_transform_grid_options_set_property;
+  object_class->get_property = gimp_transform_grid_options_get_property;
+
+  g_object_class_override_property (object_class, PROP_DIRECTION,
+                                    "direction");
+
+  g_object_class_install_property (object_class, PROP_DIRECTION_LINKED,
+                                   g_param_spec_boolean ("direction-linked",
+                                                         NULL, NULL,
+                                                         FALSE,
+                                                         G_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT));
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_SHOW_PREVIEW,
+                            "show-preview",
+                            _("Show image preview"),
+                            _("Show a preview of the transformed image"),
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_COMPOSITED_PREVIEW,
+                            "composited-preview",
+                            _("Composited preview"),
+                            _("Show preview as part of the image composition"),
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_PREVIEW_LINKED,
+                            "preview-linked",
+                            _("Preview linked items"),
+                            _("Include linked items in the preview"),
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_SYNCHRONOUS_PREVIEW,
+                            "synchronous-preview",
+                            _("Synchronous preview"),
+                            _("Render the preview synchronously"),
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_PREVIEW_OPACITY,
+                           "preview-opacity",
+                           _("Image opacity"),
+                           _("Opacity of the preview image"),
+                           0.0, 1.0, 1.0,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_GRID_TYPE,
+                         "grid-type",
+                         _("Guides"),
+                         _("Composition guides such as rule of thirds"),
+                         GIMP_TYPE_GUIDES_TYPE,
+                         GIMP_GUIDES_NONE,
+                         GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_INT (object_class, PROP_GRID_SIZE,
+                        "grid-size",
+                        NULL,
+                        _("Size of a grid cell for variable number "
+                          "of composition guides"),
+                        1, 128, 15,
+                        GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_MOVE,
+                            "constrain-move",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_SCALE,
+                            "constrain-scale",
+                            NULL, NULL,
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_ROTATE,
+                            "constrain-rotate",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_SHEAR,
+                            "constrain-shear",
+                            NULL, NULL,
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_PERSPECTIVE,
+                            "constrain-perspective",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_FROMPIVOT_SCALE,
+                            "frompivot-scale",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_FROMPIVOT_SHEAR,
+                            "frompivot-shear",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_FROMPIVOT_PERSPECTIVE,
+                            "frompivot-perspective",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_CORNERSNAP,
+                            "cornersnap",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_FIXEDPIVOT,
+                            "fixedpivot",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+}
+
+static void
+gimp_transform_grid_options_init (GimpTransformGridOptions *options)
+{
+}
+
+static void
+gimp_transform_grid_options_set_property (GObject      *object,
+                                     guint         property_id,
+                                     const GValue *value,
+                                     GParamSpec   *pspec)
+{
+  GimpTransformGridOptions *options           = GIMP_TRANSFORM_GRID_OPTIONS (object);
+  GimpTransformOptions     *transform_options = GIMP_TRANSFORM_OPTIONS (object);
+
+  switch (property_id)
+    {
+    case PROP_DIRECTION:
+      transform_options->direction = g_value_get_enum (value);
+
+      /* Expected default for corrective transform_grid is to see the
+       * original image only.
+       */
+      g_object_set (options,
+                    "show-preview",
+                    transform_options->direction != GIMP_TRANSFORM_BACKWARD,
+                    NULL);
+      break;
+    case PROP_DIRECTION_LINKED:
+      options->direction_linked = g_value_get_boolean (value);
+      break;
+    case PROP_SHOW_PREVIEW:
+      options->show_preview = g_value_get_boolean (value);
+      break;
+    case PROP_COMPOSITED_PREVIEW:
+      options->composited_preview = g_value_get_boolean (value);
+      break;
+    case PROP_PREVIEW_LINKED:
+      options->preview_linked = g_value_get_boolean (value);
+      break;
+    case PROP_SYNCHRONOUS_PREVIEW:
+      options->synchronous_preview = g_value_get_boolean (value);
+      break;
+    case PROP_PREVIEW_OPACITY:
+      options->preview_opacity = g_value_get_double (value);
+      break;
+    case PROP_GRID_TYPE:
+      options->grid_type = g_value_get_enum (value);
+      break;
+    case PROP_GRID_SIZE:
+      options->grid_size = g_value_get_int (value);
+      break;
+    case PROP_CONSTRAIN_MOVE:
+      options->constrain_move = g_value_get_boolean (value);
+      break;
+    case PROP_CONSTRAIN_SCALE:
+      options->constrain_scale = g_value_get_boolean (value);
+      break;
+    case PROP_CONSTRAIN_ROTATE:
+      options->constrain_rotate = g_value_get_boolean (value);
+      break;
+    case PROP_CONSTRAIN_SHEAR:
+      options->constrain_shear = g_value_get_boolean (value);
+      break;
+    case PROP_CONSTRAIN_PERSPECTIVE:
+      options->constrain_perspective = g_value_get_boolean (value);
+      break;
+    case PROP_FROMPIVOT_SCALE:
+      options->frompivot_scale = g_value_get_boolean (value);
+      break;
+    case PROP_FROMPIVOT_SHEAR:
+      options->frompivot_shear = g_value_get_boolean (value);
+      break;
+    case PROP_FROMPIVOT_PERSPECTIVE:
+      options->frompivot_perspective = g_value_get_boolean (value);
+      break;
+    case PROP_CORNERSNAP:
+      options->cornersnap = g_value_get_boolean (value);
+      break;
+    case PROP_FIXEDPIVOT:
+      options->fixedpivot = g_value_get_boolean (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_transform_grid_options_get_property (GObject    *object,
+                                          guint       property_id,
+                                          GValue     *value,
+                                          GParamSpec *pspec)
+{
+  GimpTransformGridOptions *options           = GIMP_TRANSFORM_GRID_OPTIONS (object);
+  GimpTransformOptions     *transform_options = GIMP_TRANSFORM_OPTIONS (object);
+
+  switch (property_id)
+    {
+    case PROP_DIRECTION:
+      g_value_set_enum (value, transform_options->direction);
+      break;
+    case PROP_DIRECTION_LINKED:
+      g_value_set_boolean (value, options->direction_linked);
+      break;
+    case PROP_SHOW_PREVIEW:
+      g_value_set_boolean (value, options->show_preview);
+      break;
+    case PROP_COMPOSITED_PREVIEW:
+      g_value_set_boolean (value, options->composited_preview);
+      break;
+    case PROP_PREVIEW_LINKED:
+      g_value_set_boolean (value, options->preview_linked);
+      break;
+    case PROP_SYNCHRONOUS_PREVIEW:
+      g_value_set_boolean (value, options->synchronous_preview);
+      break;
+    case PROP_PREVIEW_OPACITY:
+      g_value_set_double (value, options->preview_opacity);
+      break;
+    case PROP_GRID_TYPE:
+      g_value_set_enum (value, options->grid_type);
+      break;
+    case PROP_GRID_SIZE:
+      g_value_set_int (value, options->grid_size);
+      break;
+    case PROP_CONSTRAIN_MOVE:
+      g_value_set_boolean (value, options->constrain_move);
+      break;
+    case PROP_CONSTRAIN_SCALE:
+      g_value_set_boolean (value, options->constrain_scale);
+      break;
+    case PROP_CONSTRAIN_ROTATE:
+      g_value_set_boolean (value, options->constrain_rotate);
+      break;
+    case PROP_CONSTRAIN_SHEAR:
+      g_value_set_boolean (value, options->constrain_shear);
+      break;
+    case PROP_CONSTRAIN_PERSPECTIVE:
+      g_value_set_boolean (value, options->constrain_perspective);
+      break;
+    case PROP_FROMPIVOT_SCALE:
+      g_value_set_boolean (value, options->frompivot_scale);
+      break;
+    case PROP_FROMPIVOT_SHEAR:
+      g_value_set_boolean (value, options->frompivot_shear);
+      break;
+    case PROP_FROMPIVOT_PERSPECTIVE:
+      g_value_set_boolean (value, options->frompivot_perspective);
+      break;
+    case PROP_CORNERSNAP:
+      g_value_set_boolean (value, options->cornersnap);
+      break;
+    case PROP_FIXEDPIVOT:
+      g_value_set_boolean (value, options->fixedpivot);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+/**
+ * gimp_transform_grid_options_gui:
+ * @tool_options: a #GimpToolOptions
+ *
+ * Build the TransformGrid Tool Options.
+ *
+ * Return value: a container holding the transform_grid tool options
+ **/
+GtkWidget *
+gimp_transform_grid_options_gui (GimpToolOptions *tool_options)
+{
+  GObject                    *config  = G_OBJECT (tool_options);
+  GimpTransformGridOptions   *options = GIMP_TRANSFORM_GRID_OPTIONS (tool_options);
+  GimpTransformGridToolClass *tg_class;
+  GtkWidget                  *vbox;
+  GtkWidget                  *vbox2;
+  GtkWidget                  *vbox3;
+  GtkWidget                  *button;
+  GtkWidget                  *frame;
+  GtkWidget                  *combo;
+  GtkWidget                  *scale;
+  GtkWidget                  *grid_box;
+  GdkModifierType             extend_mask    = gimp_get_extend_selection_mask ();
+  GdkModifierType             constrain_mask = gimp_get_constrain_behavior_mask ();
+
+  vbox = gimp_transform_options_gui (tool_options, TRUE, TRUE, TRUE);
+
+  tg_class  = g_type_class_ref (tool_options->tool_info->tool_type);
+
+  /* the direction-link button */
+  if (tg_class->matrix_to_info)
+    {
+      GimpTransformOptions *tr_options = GIMP_TRANSFORM_OPTIONS (tool_options);
+      GtkWidget            *hbox;
+
+      vbox2 = gtk_bin_get_child (GTK_BIN (tr_options->direction_frame));
+      g_object_ref (vbox2);
+      gtk_container_remove (GTK_CONTAINER (tr_options->direction_frame), vbox2);
+
+      hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 1);
+      gtk_container_add (GTK_CONTAINER (tr_options->direction_frame), hbox);
+      gtk_widget_show (hbox);
+
+      gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 0);
+      g_object_unref (vbox2);
+
+      button = gimp_chain_button_new (GIMP_CHAIN_RIGHT);
+      gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
+      gtk_widget_set_sensitive (button, FALSE);
+      gimp_chain_button_set_icon_size (GIMP_CHAIN_BUTTON (button),
+                                       GTK_ICON_SIZE_MENU);
+      gtk_widget_show (button);
+
+      g_object_bind_property (config, "direction-linked",
+                              button, "active",
+                              G_BINDING_BIDIRECTIONAL |
+                              G_BINDING_SYNC_CREATE);
+
+      options->direction_chain_button = button;
+    }
+
+  g_type_class_unref (tg_class);
+
+  /*  the preview frame  */
+  vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+
+  vbox3 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+
+  button = gimp_prop_check_button_new (config, "preview-linked", NULL);
+  gtk_box_pack_start (GTK_BOX (vbox3), button, FALSE, FALSE, 0);
+  gtk_widget_show (button);
+
+  button = gimp_prop_check_button_new (config, "synchronous-preview", NULL);
+  gtk_box_pack_start (GTK_BOX (vbox3), button, FALSE, FALSE, 0);
+  gtk_widget_show (button);
+
+  frame = gimp_prop_expanding_frame_new (config, "composited-preview", NULL,
+                                         vbox3, NULL);
+  gtk_box_pack_start (GTK_BOX (vbox2), frame, FALSE, FALSE, 0);
+  gtk_widget_show (frame);
+
+  scale = gimp_prop_spin_scale_new (config, "preview-opacity", NULL,
+                                    0.01, 0.1, 0);
+  gimp_prop_widget_set_factor (scale, 100.0, 0.0, 0.0, 1);
+  gtk_box_pack_start (GTK_BOX (vbox2), scale, FALSE, FALSE, 0);
+  gtk_widget_show (scale);
+
+  g_object_bind_property (config, "composited-preview",
+                          scale,  "sensitive",
+                          G_BINDING_SYNC_CREATE |
+                          G_BINDING_INVERT_BOOLEAN);
+
+  frame = gimp_prop_expanding_frame_new (config, "show-preview", NULL,
+                                         vbox2, NULL);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+  gtk_widget_show (frame);
+
+  /*  the guides frame  */
+  frame = gimp_frame_new (NULL);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+  gtk_widget_show (frame);
+
+  /*  the guides type menu  */
+  combo = gimp_prop_enum_combo_box_new (config, "grid-type", 0, 0);
+  gimp_int_combo_box_set_label (GIMP_INT_COMBO_BOX (combo), _("Guides"));
+  g_object_set (combo, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
+  gtk_frame_set_label_widget (GTK_FRAME (frame), combo);
+  gtk_widget_show (combo);
+
+  /*  the grid density scale  */
+  scale = gimp_prop_spin_scale_new (config, "grid-size", NULL,
+                                    1.8, 8.0, 0);
+  gimp_spin_scale_set_label (GIMP_SPIN_SCALE (scale), NULL);
+  gtk_container_add (GTK_CONTAINER (frame), scale);
+
+  g_object_bind_property_full (config, "grid-type",
+                               scale,  "visible",
+                               G_BINDING_SYNC_CREATE,
+                               gimp_transform_grid_options_sync_grid,
+                               NULL,
+                               NULL, NULL);
+
+  if (tool_options->tool_info->tool_type == GIMP_TYPE_ROTATE_TOOL)
+    {
+      gchar *label;
+
+      label = g_strdup_printf (_("15 degrees (%s)"),
+                               gimp_get_mod_string (extend_mask));
+
+      button = gimp_prop_check_button_new (config, "constrain-rotate", label);
+      gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+      gtk_widget_show (button);
+
+      gimp_help_set_help_data (button, _("Limit rotation steps to 15 degrees"),
+                               NULL);
+
+      g_free (label);
+    }
+  else if (tool_options->tool_info->tool_type == GIMP_TYPE_SCALE_TOOL)
+    {
+      gchar *label;
+
+      label = g_strdup_printf (_("Keep aspect (%s)"),
+                               gimp_get_mod_string (extend_mask));
+
+      button = gimp_prop_check_button_new (config, "constrain-scale", label);
+      gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+      gtk_widget_show (button);
+
+      gimp_help_set_help_data (button, _("Keep the original aspect ratio"),
+                               NULL);
+
+      g_free (label);
+
+      label = g_strdup_printf (_("Around center (%s)"),
+                               gimp_get_mod_string (constrain_mask));
+
+      button = gimp_prop_check_button_new (config, "frompivot-scale", label);
+      gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+      gtk_widget_show (button);
+
+      gimp_help_set_help_data (button, _("Scale around the center point"),
+                               NULL);
+
+      g_free (label);
+    }
+  else if (tool_options->tool_info->tool_type == GIMP_TYPE_PERSPECTIVE_TOOL)
+    {
+      gchar *label;
+
+      label = g_strdup_printf (_("Constrain handles (%s)"),
+                               gimp_get_mod_string (extend_mask));
+
+      button = gimp_prop_check_button_new (config, "constrain-perspective", label);
+      gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+      gtk_widget_show (button);
+
+      gimp_help_set_help_data (
+        button, _("Constrain handles to move along edges and diagonal (%s)"),
+        NULL);
+
+      g_free (label);
+
+      label = g_strdup_printf (_("Around center (%s)"),
+                               gimp_get_mod_string (constrain_mask));
+
+      button = gimp_prop_check_button_new (config, "frompivot-perspective", label);
+      gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+      gtk_widget_show (button);
+
+      gimp_help_set_help_data (
+        button, _("Transform around the center point"),
+        NULL);
+
+      g_free (label);
+    }
+  else if (tool_options->tool_info->tool_type == GIMP_TYPE_UNIFIED_TRANSFORM_TOOL)
+    {
+      struct
+      {
+        GdkModifierType  mod;
+        gchar           *name;
+        gchar           *desc;
+        gchar           *tip;
+      }
+      opt_list[] =
+      {
+        { extend_mask, NULL, N_("Constrain (%s)") },
+        { extend_mask, "constrain-move", N_("Move"),
+          N_("Constrain movement to 45 degree angles from center (%s)") },
+        { extend_mask, "constrain-scale", N_("Scale"),
+          N_("Maintain aspect ratio when scaling (%s)") },
+        { extend_mask, "constrain-rotate", N_("Rotate"),
+          N_("Constrain rotation to 15 degree increments (%s)") },
+        { extend_mask, "constrain-shear", N_("Shear"),
+          N_("Shear along edge direction only (%s)") },
+        { extend_mask, "constrain-perspective", N_("Perspective"),
+          N_("Constrain perspective handles to move along edges and diagonal (%s)") },
+
+        { constrain_mask, NULL,
+          N_("From pivot  (%s)") },
+        { constrain_mask, "frompivot-scale", N_("Scale"),
+          N_("Scale from pivot point (%s)") },
+        { constrain_mask, "frompivot-shear", N_("Shear"),
+          N_("Shear opposite edge by same amount (%s)") },
+        { constrain_mask, "frompivot-perspective", N_("Perspective"),
+          N_("Maintain position of pivot while changing perspective (%s)") },
+
+        { 0, NULL,
+          N_("Pivot") },
+        { extend_mask, "cornersnap", N_("Snap (%s)"),
+          N_("Snap pivot to corners and center (%s)") },
+        { 0, "fixedpivot", N_("Lock"),
+          N_("Lock pivot position to canvas") },
+      };
+
+      gchar *label;
+      gint   i;
+
+      frame = NULL;
+
+      for (i = 0; i < G_N_ELEMENTS (opt_list); i++)
+        {
+          if (! opt_list[i].name && ! opt_list[i].desc)
+            {
+              frame = NULL;
+              continue;
+            }
+
+          label = g_strdup_printf (gettext (opt_list[i].desc),
+                                   gimp_get_mod_string (opt_list[i].mod));
+
+          if (opt_list[i].name)
+            {
+              button = gimp_prop_check_button_new (config, opt_list[i].name,
+                                                   label);
+
+              gtk_box_pack_start (GTK_BOX (frame ? grid_box : vbox),
+                                  button, FALSE, FALSE, 0);
+
+              gtk_widget_show (button);
+
+              g_free (label);
+              label = g_strdup_printf (gettext (opt_list[i].tip),
+                                       gimp_get_mod_string (opt_list[i].mod));
+
+              gimp_help_set_help_data (button, label, NULL);
+            }
+          else
+            {
+              frame = gimp_frame_new (label);
+              gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+              gtk_widget_show (frame);
+
+              grid_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+              gtk_container_add (GTK_CONTAINER (frame), grid_box);
+              gtk_widget_show (grid_box);
+            }
+
+          g_free (label);
+        }
+    }
+
+  return vbox;
+}
+
+gboolean
+gimp_transform_grid_options_show_preview (GimpTransformGridOptions *options)
+{
+  GimpTransformOptions *transform_options;
+
+  g_return_val_if_fail (GIMP_IS_TRANSFORM_GRID_OPTIONS (options), FALSE);
+
+  transform_options = GIMP_TRANSFORM_OPTIONS (options);
+
+  if (options->show_preview)
+    {
+      switch (transform_options->type)
+        {
+        case GIMP_TRANSFORM_TYPE_LAYER:
+        case GIMP_TRANSFORM_TYPE_IMAGE:
+          return TRUE;
+
+        case GIMP_TRANSFORM_TYPE_SELECTION:
+        case GIMP_TRANSFORM_TYPE_PATH:
+          return FALSE;
+        }
+    }
+
+  return FALSE;
+}
+
+
+/*  private functions  */
+
+static gboolean
+gimp_transform_grid_options_sync_grid (GBinding     *binding,
+                                       const GValue *source_value,
+                                       GValue       *target_value,
+                                       gpointer      user_data)
+{
+  GimpGuidesType type = g_value_get_enum (source_value);
+
+  g_value_set_boolean (target_value,
+                       type == GIMP_GUIDES_N_LINES ||
+                       type == GIMP_GUIDES_SPACING);
+
+  return TRUE;
+}
+