[giv] * giv-win.gob, giv-contrast.gob, giv-histo.gob : Moving over a gray level image updates the pointer

[Dov Grobgeld <dov src gnome org>]

commit 40f2119b97da89ea0001a9832c2e6c9128726fb5
Author: Dov Grobgeld <dov grobgeld gmail com>
Date:   Tue Apr 12 22:38:40 2011 +0300

    * giv-win.gob, giv-contrast.gob, giv-histo.gob : Moving over a gray level image updates the pointer triangle in the histogram.

 ChangeLog            |    4 ++++
 src/giv-contrast.gob |    7 +++++++
 src/giv-histo.gob    |    8 ++++++++
 src/giv-win.gob      |    3 +++
 4 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index aeb8e1d..aca7e8f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-04-12  Dov Grobgeld  <dov grobgeld gmail com>
+
+        * giv-win.gob, giv-contrast.gob, giv-histo.gob : Moving over a gray level image updates the pointer triangle in the histogram.
+
 2011-04-10  Dov Grobgeld  <dov grobgeld gmail com>
 
         * giv-win.gob : Made GL of integer formats show all values as integers.
diff --git a/src/giv-contrast.gob b/src/giv-contrast.gob
index 5cabfb2..e29d1a2 100644
--- a/src/giv-contrast.gob
+++ b/src/giv-contrast.gob
@@ -179,6 +179,13 @@ class Giv:Contrast from Gtk:Dialog {
         giv_histo_set_image(GIV_HISTO(selfp->w_histo), img);
     }
     
+    public void
+    set_cursor_gl(self,
+                  double gl)
+    {
+        giv_histo_set_cursor_gl(GIV_HISTO(selfp->w_histo), gl);
+    }
+
     override (Gtk:Dialog) void
     response (Gtk:Dialog *_self,
               gint response_id)
diff --git a/src/giv-histo.gob b/src/giv-histo.gob
index 4f68327..4a55a97 100644
--- a/src/giv-histo.gob
+++ b/src/giv-histo.gob
@@ -112,6 +112,14 @@ class Giv:Histo from Gtk:Drawing:Area {
 
         gtk_widget_queue_draw(GTK_WIDGET(self));
     }
+
+    public void
+    set_cursor_gl(self,
+                  double gl)
+    {
+        selfp->cursor_gl = gl;
+        gtk_widget_queue_draw(GTK_WIDGET(self));
+    }
     
     override (Gtk:Widget) gboolean
     expose_event (Gtk:Widget *_self,
diff --git a/src/giv-win.gob b/src/giv-win.gob
index 6a5a655..467309d 100644
--- a/src/giv-win.gob
+++ b/src/giv-win.gob
@@ -1718,6 +1718,9 @@ cb_motion_event(GtkWidget *widget,
                 g_string_sprintfa(info_label,
                                   "] = #%02X",
                                   (int)val);
+                if (selfp->w_contrast_view)
+                    giv_contrast_set_cursor_gl(GIV_CONTRAST(selfp->w_contrast_view),
+                                               val);
             }
             else if (selfp->img_org->img_type == GIVIMAGE_RGBA_U8
                      || selfp->img_org->img_type == GIVIMAGE_RGBA_U16) {