[gimp] app: add show-guides property to GimpToolTransformGrid

[N/A <ell src gnome org>]

commit 6a64f096818f14a22d5f881864b699a1a85dcb8e
Author: Ell <ell_se yahoo com>
Date:   Sat Jan 27 07:15:05 2018 -0500

    app: add show-guides property to GimpToolTransformGrid
    
    ... which can be used to control the guides' visibility.
    
    Will be used by the next commit, to hide the guides in
    GimpToolHandleGrid when the tranformation is invalid.

 app/display/gimptooltransformgrid.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/app/display/gimptooltransformgrid.c b/app/display/gimptooltransformgrid.c
index d1f6d3b..15f250e 100644
--- a/app/display/gimptooltransformgrid.c
+++ b/app/display/gimptooltransformgrid.c
@@ -59,6 +59,7 @@ enum
   PROP_PIVOT_Y,
   PROP_GUIDE_TYPE,
   PROP_N_GUIDES,
+  PROP_SHOW_GUIDES,
   PROP_INSIDE_FUNCTION,
   PROP_OUTSIDE_FUNCTION,
   PROP_USE_CORNER_HANDLES,
@@ -89,6 +90,7 @@ struct _GimpToolTransformGridPrivate
   gdouble                pivot_y;
   GimpGuidesType         guide_type;
   gint                   n_guides;
+  gboolean               show_guides;
   GimpTransformFunction  inside_function;
   GimpTransformFunction  outside_function;
   gboolean               use_corner_handles;
@@ -290,6 +292,12 @@ gimp_tool_transform_grid_class_init (GimpToolTransformGridClass *klass)
                                                      GIMP_PARAM_READWRITE |
                                                      G_PARAM_CONSTRUCT));
 
+  g_object_class_install_property (object_class, PROP_SHOW_GUIDES,
+                                   g_param_spec_boolean ("show-guides", NULL, NULL,
+                                                         TRUE,
+                                                         GIMP_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT));
+
   g_object_class_install_property (object_class, PROP_INSIDE_FUNCTION,
                                    g_param_spec_enum ("inside-function",
                                                       NULL, NULL,
@@ -578,6 +586,9 @@ gimp_tool_transform_grid_set_property (GObject      *object,
     case PROP_N_GUIDES:
       private->n_guides = g_value_get_int (value);
       break;
+    case PROP_SHOW_GUIDES:
+      private->show_guides = g_value_get_boolean (value);
+      break;
 
     case PROP_INSIDE_FUNCTION:
       private->inside_function = g_value_get_enum (value);
@@ -691,6 +702,9 @@ gimp_tool_transform_grid_get_property (GObject    *object,
     case PROP_N_GUIDES:
       g_value_set_int (value, private->n_guides);
       break;
+    case PROP_SHOW_GUIDES:
+      g_value_set_boolean (value, private->show_guides);
+      break;
 
     case PROP_INSIDE_FUNCTION:
       g_value_set_enum (value, private->inside_function);
@@ -1020,6 +1034,7 @@ gimp_tool_transform_grid_changed (GimpToolWidget *widget)
                                     private->y2,
                                     private->guide_type,
                                     private->n_guides);
+  gimp_canvas_item_set_visible (private->guides, private->show_guides);
 
   get_handle_geometry (grid, o, angle);
   gimp_tool_transform_grid_calc_handles (grid, &handle_w, &handle_h);