[gimp] app: add GimpTransformGridTool::dynamic-handle-size property

[Ell <ell src gnome org>]

commit 0f697b897f95ee1b9dcbb8889b85617605adcdd3
Author: Ell <ell_se yahoo com>
Date:   Mon Jan 6 16:35:01 2020 +0200

    app: add GimpTransformGridTool::dynamic-handle-size property
    
    Add a boolean GimpTransformGridTool::dynamic-handle-size property,
    which controls whether the handle sizes are adjustment dynamically
    according to the grid's size, or remain fixed.  This property is
    TRUE by default, to maintain the current behavior.

 app/display/gimptooltransformgrid.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
---
diff --git a/app/display/gimptooltransformgrid.c b/app/display/gimptooltransformgrid.c
index b361401fd5..8070924b21 100644
--- a/app/display/gimptooltransformgrid.c
+++ b/app/display/gimptooltransformgrid.c
@@ -69,6 +69,7 @@ enum
   PROP_USE_SHEAR_HANDLES,
   PROP_USE_CENTER_HANDLE,
   PROP_USE_PIVOT_HANDLE,
+  PROP_DYNAMIC_HANDLE_SIZE,
   PROP_CONSTRAIN_MOVE,
   PROP_CONSTRAIN_SCALE,
   PROP_CONSTRAIN_ROTATE,
@@ -101,6 +102,7 @@ struct _GimpToolTransformGridPrivate
   gboolean               use_shear_handles;
   gboolean               use_center_handle;
   gboolean               use_pivot_handle;
+  gboolean               dynamic_handle_size;
   gboolean               constrain_move;
   gboolean               constrain_scale;
   gboolean               constrain_rotate;
@@ -374,6 +376,13 @@ gimp_tool_transform_grid_class_init (GimpToolTransformGridClass *klass)
                                                          GIMP_PARAM_READWRITE |
                                                          G_PARAM_CONSTRUCT));
 
+  g_object_class_install_property (object_class, PROP_DYNAMIC_HANDLE_SIZE,
+                                   g_param_spec_boolean ("dynamic-handle-size",
+                                                         NULL, NULL,
+                                                         TRUE,
+                                                         GIMP_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT));
+
   g_object_class_install_property (object_class, PROP_CONSTRAIN_MOVE,
                                    g_param_spec_boolean ("constrain-move",
                                                          NULL, NULL,
@@ -634,6 +643,10 @@ gimp_tool_transform_grid_set_property (GObject      *object,
       private->use_pivot_handle = g_value_get_boolean (value);
       break;
 
+    case PROP_DYNAMIC_HANDLE_SIZE:
+      private->dynamic_handle_size = g_value_get_boolean (value);
+      break;
+
     case PROP_CONSTRAIN_MOVE:
       private->constrain_move = g_value_get_boolean (value);
       break;
@@ -753,6 +766,10 @@ gimp_tool_transform_grid_get_property (GObject    *object,
       g_value_set_boolean (value, private->use_pivot_handle);
       break;
 
+    case PROP_DYNAMIC_HANDLE_SIZE:
+      g_value_set_boolean (value, private->dynamic_handle_size);
+      break;
+
     case PROP_CONSTRAIN_MOVE:
       g_value_set_boolean (value, private->constrain_move);
       break;
@@ -2407,6 +2424,14 @@ gimp_tool_transform_grid_calc_handles (GimpToolTransformGrid *grid,
   gint                          x1, y1;
   gint                          x2, y2;
 
+  if (! private->dynamic_handle_size)
+    {
+      *handle_w = GIMP_CANVAS_HANDLE_SIZE_LARGE;
+      *handle_h = GIMP_CANVAS_HANDLE_SIZE_LARGE;
+
+      return;
+    }
+
   gimp_canvas_item_transform_xy (private->guides,
                                  private->tx1, private->ty1,
                                  &dx1, &dy1);