[glom] Partial port to recent gtkmm API changes from git master.

[Murray Cumming <murrayc src gnome org>]

commit 454aa887e45a26212af91e649861d3c3a2efe5c9
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Dec 8 12:10:18 2010 +0100

    Partial port to recent gtkmm API changes from git master.
    
    * glom/mode_data/datawidget/datawidget.cc: signal_style_changed was removed
    though it might come back later.
    * glom/mode_data/datawidget/entry.cc: Use override_color() instead of
    modify_text().
    * glom/mode_data/placeholder-glom.cc: Use set_source_rgba() instead of
    set_source_color(). Use get_style_context() instead of get_style().

 ChangeLog                               |   11 +++++++++++
 glom/mode_data/datawidget/datawidget.cc |    2 +-
 glom/mode_data/datawidget/entry.cc      |    4 ++--
 glom/mode_data/placeholder-glom.cc      |    9 +++------
 4 files changed, 17 insertions(+), 9 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 809a6be..b5e6967 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2010-12-08  Murray Cumming  <murrayc murrayc com>
+
+	Partial port to recent gtkmm API changes from git master.
+
+	* glom/mode_data/datawidget/datawidget.cc: signal_style_changed was removed 
+	though it might come back later.
+	* glom/mode_data/datawidget/entry.cc: Use override_color() instead of 
+	modify_text().
+	* glom/mode_data/placeholder-glom.cc: Use set_source_rgba() instead of 
+	set_source_color(). Use get_style_context() instead of get_style().
+
 2010-12-03  Murray Cumming  <murrayc murrayc com>
 
 	Fix the build with latest gtksourceviewmm from git master.
diff --git a/glom/mode_data/datawidget/datawidget.cc b/glom/mode_data/datawidget/datawidget.cc
index 248dc75..34fdd82 100644
--- a/glom/mode_data/datawidget/datawidget.cc
+++ b/glom/mode_data/datawidget/datawidget.cc
@@ -264,7 +264,7 @@ DataWidget::DataWidget(const sharedptr<LayoutItem_Field>& field, const Glib::ust
 #endif // GLOM_ENABLE_CLIENT_ONLY
 
   set_events(Gdk::BUTTON_PRESS_MASK);
-  signal_style_changed().connect(sigc::mem_fun(*this, &DataWidget::on_self_style_changed));
+  //TODO: signal_style_changed().connect(sigc::mem_fun(*this, &DataWidget::on_self_style_changed));
 }
 
 DataWidget::~DataWidget()
diff --git a/glom/mode_data/datawidget/entry.cc b/glom/mode_data/datawidget/entry.cc
index 5a3de40..69808f6 100644
--- a/glom/mode_data/datawidget/entry.cc
+++ b/glom/mode_data/datawidget/entry.cc
@@ -172,9 +172,9 @@ void Entry::set_value(const Gnome::Gda::Value& value)
     const Glib::ustring fg_color = 
     layout_item->get_formatting_used().get_text_format_color_foreground_to_use(value);
     if(!fg_color.empty())
-      modify_text(Gtk::STATE_NORMAL, Gdk::Color(fg_color));
+      override_color(Gdk::RGBA(fg_color));
     else
-      modify_text(Gtk::STATE_NORMAL, Gdk::Color());
+      override_color(Gdk::RGBA()); //TODO: Use an unset_*() method?
   }
 }
 
diff --git a/glom/mode_data/placeholder-glom.cc b/glom/mode_data/placeholder-glom.cc
index 2e30704..609605f 100644
--- a/glom/mode_data/placeholder-glom.cc
+++ b/glom/mode_data/placeholder-glom.cc
@@ -77,9 +77,6 @@ void PlaceholderGlom::on_realize()
   //Call base class:
   Gtk::Widget::on_realize();
 
-  ensure_style();
-
-
   if(!m_refGdkWindow)
   {
     //Create the GdkWindow:
@@ -105,7 +102,7 @@ void PlaceholderGlom::on_realize()
     set_window(m_refGdkWindow);
 
     //set colors
-    modify_fg(Gtk::STATE_NORMAL , Gdk::Color("black"));
+    override_color(Gdk::RGBA("black"));
 
     //make the widget receive expose events
     m_refGdkWindow->set_user_data(gobj());
@@ -121,11 +118,11 @@ void PlaceholderGlom::on_unrealize()
 bool PlaceholderGlom::on_draw(const Cairo::RefPtr<Cairo::Context>& cr)
 {
   // Paint the background:
-  Gdk::Cairo::set_source_color(cr, get_style()->get_bg(Gtk::STATE_NORMAL));
+  Gdk::Cairo::set_source_rgba(cr, get_style_context()->get_background_color());
   cr->paint();
 
   // Draw the foreground:
-  Gdk::Cairo::set_source_color(cr, get_style()->get_fg(Gtk::STATE_NORMAL));
+  Gdk::Cairo::set_source_rgba(cr, get_style_context()->get_color());
   cr->set_line_width(4);
   cr->rectangle(0, 0,  get_allocation().get_width(), get_allocation().get_height());
   cr->stroke();