[gimp] app: add support for picking GEGL relative-coordinate values

[Michael Natterer <mitch src gnome org>]

commit 3550132ac79d4b98468ee26619610502c4856222
Author: Michael Natterer <mitch gimp org>
Date:   Sat May 24 01:38:15 2014 +0200

    app: add support for picking GEGL relative-coordinate values
    
    Also, don't link relative coordinates by default, and remove some crap
    heuristics that predate property keys.

 app/tools/gimpoperationtool.c |   70 ++++++++++++++++++-----------------------
 app/widgets/gimpproptable.c   |    6 ++-
 2 files changed, 35 insertions(+), 41 deletions(-)
---
diff --git a/app/tools/gimpoperationtool.c b/app/tools/gimpoperationtool.c
index d531b90..040eaba 100644
--- a/app/tools/gimpoperationtool.c
+++ b/app/tools/gimpoperationtool.c
@@ -370,16 +370,14 @@ gimp_operation_tool_color_picked (GimpImageMapTool  *im_tool,
 
   if (pspecs[1])
     {
-      GimpDrawable *drawable     = GIMP_TOOL (im_tool)->drawable;
-      GObjectClass *object_class = G_OBJECT_GET_CLASS (tool->config);
-      GParamSpec   *pspec_x;
-      GParamSpec   *pspec_y;
-      gint          width        = 1;
-      gint          height       = 1;
-
-      /* the operation's coordinate system is the selection bounds of
-       * the drawable
-       */
+      GimpImageMapOptions *options      = GIMP_IMAGE_MAP_TOOL_GET_OPTIONS (tool);
+      GimpDrawable        *drawable     = GIMP_TOOL (im_tool)->drawable;
+      GObjectClass        *object_class = G_OBJECT_GET_CLASS (tool->config);
+      GParamSpec          *pspec_x;
+      GParamSpec          *pspec_y;
+      gint                 width        = 1;
+      gint                 height       = 1;
+
       if (drawable)
         {
           gint off_x, off_y;
@@ -389,11 +387,21 @@ gimp_operation_tool_color_picked (GimpImageMapTool  *im_tool,
           x -= off_x;
           y -= off_y;
 
-          if (gimp_item_mask_intersect (GIMP_ITEM (drawable),
-                                        &off_x, &off_y, &width, &height))
+          switch (options->region)
             {
-              x -= off_x;
-              y -= off_y;
+            case GIMP_IMAGE_MAP_REGION_SELECTION:
+              if (gimp_item_mask_intersect (GIMP_ITEM (drawable),
+                                            &off_x, &off_y, &width, &height))
+                {
+                  x -= off_x;
+                  y -= off_y;
+                }
+              break;
+
+            case GIMP_IMAGE_MAP_REGION_DRAWABLE:
+              width  = gimp_item_get_width  (GIMP_ITEM (drawable));
+              height = gimp_item_get_height (GIMP_ITEM (drawable));
+              break;
             }
         }
 
@@ -409,6 +417,15 @@ gimp_operation_tool_color_picked (GimpImageMapTool  *im_tool,
           g_value_init (&value_x, G_PARAM_SPEC_VALUE_TYPE (pspec_x));
           g_value_init (&value_y, G_PARAM_SPEC_VALUE_TYPE (pspec_y));
 
+#define HAS_KEY(p,k,v) gimp_gegl_param_spec_has_key (p, k, v)
+
+          if (HAS_KEY (pspec_x, "unit", "relative-coordinate") &&
+              HAS_KEY (pspec_y, "unit", "relative-coordinate"))
+            {
+              x /= (gdouble) width;
+              y /= (gdouble) height;
+            }
+
           if (G_IS_PARAM_SPEC_INT (pspec_x))
             {
               g_value_set_int (&value_x, x);
@@ -424,31 +441,6 @@ gimp_operation_tool_color_picked (GimpImageMapTool  *im_tool,
             }
           else if (G_IS_PARAM_SPEC_DOUBLE (pspec_x))
             {
-              GParamSpecDouble *dspec_x = G_PARAM_SPEC_DOUBLE (pspec_x);
-              GParamSpecDouble *dspec_y = G_PARAM_SPEC_DOUBLE (pspec_y);
-
-              /* handle what certain well known ops use as extent,
-               * this is by no measure proper code...
-               */
-              if (dspec_x->minimum == 0.0 && dspec_x->maximum == 1.0 &&
-                  dspec_y->minimum == 0.0 && dspec_y->maximum == 1.0)
-                {
-                  x /= width;
-                  y /= height;
-                }
-              else if (dspec_x->minimum == -1.0 && dspec_x->maximum == 2.0 &&
-                       dspec_y->minimum == -1.0 && dspec_y->maximum == 2.0)
-                {
-                  x /= width;
-                  y /= height;
-                }
-              else if (dspec_x->minimum == -1.0 && dspec_x->maximum == 1.0 &&
-                       dspec_y->minimum == -1.0 && dspec_y->maximum == 1.0)
-                {
-                  x = x * 2.0 / width  - 1.0;
-                  y = y * 2.0 / height - 1.0;
-                }
-
               g_value_set_double (&value_x, x);
               g_value_set_double (&value_y, y);
 
diff --git a/app/widgets/gimpproptable.c b/app/widgets/gimpproptable.c
index f524415..28d8a96 100644
--- a/app/widgets/gimpproptable.c
+++ b/app/widgets/gimpproptable.c
@@ -306,7 +306,8 @@ gimp_prop_table_new (GObject              *config,
                                 0, 0);
               gtk_widget_show (chain);
 
-              if (! HAS_KEY (pspec, "unit", "pixel-coordinate") &&
+              if (! HAS_KEY (pspec, "unit", "pixel-coordinate")    &&
+                  ! HAS_KEY (pspec, "unit", "relative-coordinate") &&
                   gtk_adjustment_get_value (last_x_adj) ==
                   gtk_adjustment_get_value (adj))
                 {
@@ -328,7 +329,8 @@ gimp_prop_table_new (GObject              *config,
               g_object_set_data (G_OBJECT (last_x_adj), "y-adjustment", adj);
 
               if (create_picker_func &&
-                  HAS_KEY (pspec, "unit", "pixel-coordinate"))
+                  (HAS_KEY (pspec, "unit", "pixel-coordinate") ||
+                   HAS_KEY (pspec, "unit", "relative-coordinate")))
                 {
                   GtkWidget *button;
                   gchar     *pspec_name;