[PATCH 06/17] pspp-sheet-view-column: Add support for tooltips on columns.

[Ben Pfaff]

---
 src/ui/gui/marshaller-list          |    1 +
 src/ui/gui/pspp-sheet-view-column.c |   31 +++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/src/ui/gui/marshaller-list b/src/ui/gui/marshaller-list
index 02c7ff6..3cf5a9c 100644
--- a/src/ui/gui/marshaller-list
+++ b/src/ui/gui/marshaller-list
@@ -6,6 +6,7 @@ BOOLEAN:ENUM
 BOOLEAN:ENUM,INT
 BOOLEAN:BOXED,BOXED
 BOOLEAN:BOXED,POINTER
+BOOLEAN:OBJECT
 BOOLEAN:VOID
 VOID:BOXED,BOXED
 VOID:BOXED,OBJECT
diff --git a/src/ui/gui/pspp-sheet-view-column.c 
b/src/ui/gui/pspp-sheet-view-column.c
index 227bd12..1677953 100644
--- a/src/ui/gui/pspp-sheet-view-column.c
+++ b/src/ui/gui/pspp-sheet-view-column.c
@@ -73,6 +73,7 @@ enum
 enum
 {
   CLICKED,
+  QUERY_TOOLTIP,
   LAST_SIGNAL
 };
 
@@ -201,6 +202,16 @@ pspp_sheet_view_column_class_init 
(PsppSheetViewColumnClass *class)
                   g_cclosure_marshal_VOID__VOID,
                   G_TYPE_NONE, 0);
 
+  tree_column_signals[QUERY_TOOLTIP] =
+    g_signal_new (I_("query-tooltip"),
+                  G_OBJECT_CLASS_TYPE (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  g_signal_accumulator_true_handled, NULL,
+                  psppire_marshal_BOOLEAN__OBJECT,
+                  G_TYPE_BOOLEAN, 1,
+                  GTK_TYPE_TOOLTIP);
+
   g_object_class_install_property (object_class,
                                    PROP_VISIBLE,
                                    g_param_spec_boolean ("visible",
@@ -813,6 +824,22 @@ pspp_sheet_view_column_clear_attributes_by_info 
(PsppSheetViewColumn *tree_colum
     _pspp_sheet_view_column_cell_set_dirty (tree_column);
 }
 
+static gboolean
+on_query_tooltip (GtkWidget  *widget,
+                  gint        x,
+                  gint        y,
+                  gboolean    keyboard_mode,
+                  GtkTooltip *tooltip,
+                  gpointer    user_data)
+{
+  PsppSheetViewColumn *tree_column = user_data;
+  gboolean handled;
+
+  g_signal_emit (tree_column, tree_column_signals[QUERY_TOOLTIP], 0,
+                 tooltip, &handled);
+  return handled;
+}
+
 /* Helper functions
  */
 
@@ -847,6 +874,10 @@ pspp_sheet_view_column_create_button (PsppSheetViewColumn 
*tree_column)
                    G_CALLBACK (pspp_sheet_view_column_button_clicked),
                    tree_column);
 
+  g_signal_connect (tree_column->button, "query-tooltip",
+                    G_CALLBACK (on_query_tooltip), tree_column);
+  g_object_set (tree_column->button, "has-tooltip", TRUE, NULL);
+
   tree_column->alignment = gtk_alignment_new (tree_column->xalign, 0.5, 0.0, 
0.0);
 
   hbox = gtk_hbox_new (FALSE, 2);
-- 
1.7.2.5