X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fui%2Fgui%2Fdata-sheet.c;h=de4a357bf3d5c60991df18e2a29a91eebbda5f4c;hb=c2ccb0d20912f25021d9a6c24d9c2de1b81b87bf;hp=a2a420dc62e91f3fb3064e8e830ca631fbfe60b5;hpb=75aeeafa67aa460512683311566a83917d399c70;p=pspp

diff --git a/src/ui/gui/data-sheet.c b/src/ui/gui/data-sheet.c
index a2a420dc62..de4a357bf3 100644
--- a/src/ui/gui/data-sheet.c
+++ b/src/ui/gui/data-sheet.c
@@ -44,20 +44,31 @@
 
 extern GladeXML *xml;
 
-
 static gboolean 
 traverse_callback (GtkSheet * sheet, 
-			gint row, gint col, 
-			gint *new_row, gint *new_column
-			)
+		   gint row, gint col, 
+		   gint *new_row, gint *new_column
+		   )
 {
+  gint case_count;
   PsppireDataStore *data_store = PSPPIRE_DATA_STORE(gtk_sheet_get_model(sheet));
-
   const gint n_vars = psppire_dict_get_var_cnt(data_store->dict);
 
   if ( *new_column >= n_vars ) 
     return FALSE;
 
+  case_count = psppire_case_file_get_case_count(data_store->case_file);
+
+  if ( *new_row >= case_count )
+    {
+      gint i;
+
+      for ( i = case_count ; i <= *new_row; ++i ) 
+	psppire_data_store_insert_new_case (data_store, i);
+
+      return TRUE;
+    }
+
   return TRUE;
 }
 
@@ -118,36 +129,71 @@ update_data_ref_entry(const GtkSheet *sheet, gint row, gint col)
   return FALSE;
 }
 
-
 extern PsppireDataStore *data_store ;
 
 
+/* Return the width that an  'M' character would occupy when typeset in WIDGET */
+static guint 
+calc_m_width(GtkWidget *widget, const PangoFontDescription *font_desc)
+{
+  PangoRectangle rect;
+  PangoLayout *layout ;
+  PangoContext * context;
+
+  context = gtk_widget_create_pango_context (widget);
+  g_assert (context);
+  layout = pango_layout_new (context);
+  g_assert (layout);
+
+  pango_layout_set_text (layout, "M", 1);
+  
+  pango_layout_set_font_description (layout, font_desc);
+
+  pango_layout_get_extents (layout, NULL, &rect);
+
+  g_object_unref(G_OBJECT(layout));
+  g_object_unref(G_OBJECT(context));
+
+  return PANGO_PIXELS(rect.width);
+}
+
+
+
+void
+font_change_callback(GObject *obj, gpointer data)
+{
+  GtkWidget *sheet  = data;
+  PsppireDataStore *ds = PSPPIRE_DATA_STORE(obj);
+
+  ds->width_of_m = calc_m_width(sheet, ds->font_desc);
+}
+
 GtkWidget*
 psppire_data_sheet_create (gchar *widget_name, gchar *string1, gchar *string2,
 			   gint int1, gint int2)
 {
   GtkWidget *sheet;
 
-  const gint rows = 10046;
-
-  GObject *row_geometry = g_sheet_uniform_row_new(25, rows); 
-
-  sheet = gtk_sheet_new(G_SHEET_ROW(row_geometry), 
+  sheet = gtk_sheet_new(G_SHEET_ROW(data_store), 
 			G_SHEET_COLUMN(data_store), "data sheet", 0); 
 
+  data_store->width_of_m = calc_m_width(sheet, data_store->font_desc);
 
-  g_signal_connect (GTK_OBJECT (sheet), "activate",
-		    GTK_SIGNAL_FUNC (update_data_ref_entry),
+  g_signal_connect (G_OBJECT (sheet), "activate",
+		    G_CALLBACK (update_data_ref_entry),
 		    0);
 
-  g_signal_connect (GTK_OBJECT (sheet), "traverse",
-		    GTK_SIGNAL_FUNC (traverse_callback), 0);
+  g_signal_connect (G_OBJECT (sheet), "traverse",
+		    G_CALLBACK (traverse_callback), 0);
 
 
-  g_signal_connect (GTK_OBJECT (sheet), "double-click-column",
-		    GTK_SIGNAL_FUNC (click2column),
+  g_signal_connect (G_OBJECT (sheet), "double-click-column",
+		    G_CALLBACK (click2column),
 		    0);
 
+  g_signal_connect (G_OBJECT (data_store), "font-changed",
+		    G_CALLBACK (font_change_callback), sheet);
+
   gtk_sheet_set_active_cell(GTK_SHEET(sheet), -1, -1);
   gtk_widget_show(sheet);