[glom] Use Gio::Resource::get_info_global().

[Murray Cumming <murrayc src gnome org>]

commit 3ec22eb2d3616d866feab7eee4962001b8270864
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun Nov 16 16:33:34 2014 +0100

    Use Gio::Resource::get_info_global().
    
    Instead of the C API.

 glom/libglom/utils.cc                              |   14 ++++++++++++++
 glom/libglom/utils.h                               |    7 +++++++
 glom/libglom/xsl_utils.cc                          |    3 ++-
 .../print_layouts/print_layout_toolbar_button.cc   |    3 ++-
 glom/utility_widgets/layouttoolbarbutton.cc        |    3 ++-
 5 files changed, 27 insertions(+), 3 deletions(-)
---
diff --git a/glom/libglom/utils.cc b/glom/libglom/utils.cc
index 417aefc..3560d53 100644
--- a/glom/libglom/utils.cc
+++ b/glom/libglom/utils.cc
@@ -26,6 +26,7 @@
 #include <libglom/data_structure/glomconversions.h>
 
 #include <giomm/file.h>
+#include <giomm/resource.h>
 #include <glibmm/convert.h>
 #include <glibmm/fileutils.h>
 #include <glibmm/miscutils.h>
@@ -1569,4 +1570,17 @@ bool Utils::script_check_for_pygtk2(const Glib::ustring& script)
   return true;
 }
 
+bool Utils::get_resource_exists(const std::string& resource_path)
+{
+  try
+  {
+     Gio::Resource::get_info_global(resource_path);
+     return true;
+  }
+  catch (const Gio::ResourceError&)
+  {
+     return false;
+  }
+}
+
 } //namespace Glom
diff --git a/glom/libglom/utils.h b/glom/libglom/utils.h
index fbaabff..27d54e0 100644
--- a/glom/libglom/utils.h
+++ b/glom/libglom/utils.h
@@ -248,6 +248,13 @@ Glib::ustring get_temp_directory_uri(const std::string& prefix = std::string());
  */
 bool script_check_for_pygtk2(const Glib::ustring& script);
 
+/** 
+ * This is simpler than catching the exception from Gio::Resource::get_info_global().
+ *
+ * @returns true if the GResource exists.
+ */
+bool get_resource_exists(const std::string& resource_path);
+
 } //namespace Utils
 
 } //namespace Glom
diff --git a/glom/libglom/xsl_utils.cc b/glom/libglom/xsl_utils.cc
index 739974c..595c92b 100644
--- a/glom/libglom/xsl_utils.cc
+++ b/glom/libglom/xsl_utils.cc
@@ -24,6 +24,7 @@
 #include <libglom/connectionpool.h>
 #include <libglom/data_structure/layout/report_parts/layoutitem_fieldsummary.h>
 #include <libglom/data_structure/glomconversions.h>
+#include <libglom/utils.h>
 #include <libxml++/libxml++.h>
 #include <libxslt/transform.h>
 //#include <libexslt/exslt.h> //For exsltRegisterAll().
@@ -47,7 +48,7 @@ namespace
   static std::string get_xslt_filepath(const std::string& xsl_file)
   {
     const std::string resource_path = "/org/gnome/glom/libglom/data/xslt/" + xsl_file;
-    if(!g_resources_get_info(resource_path.c_str(), G_RESOURCE_LOOKUP_FLAGS_NONE, 0, 0, 0))
+    if(!Glom::Utils::get_resource_exists(resource_path))
     {
       std::cerr << G_STRFUNC << ": xslt resource not found: " << resource_path << std::endl;
     }
diff --git a/glom/mode_design/print_layouts/print_layout_toolbar_button.cc 
b/glom/mode_design/print_layouts/print_layout_toolbar_button.cc
index d1653e5..372cf12 100644
--- a/glom/mode_design/print_layouts/print_layout_toolbar_button.cc
+++ b/glom/mode_design/print_layouts/print_layout_toolbar_button.cc
@@ -20,6 +20,7 @@
  
 #include "print_layout_toolbar_button.h"
 #include <glom/utils_ui.h>
+#include <libglom/utils.h>
 #include <gtkmm/toolpalette.h>
 #include <iostream>
 
@@ -33,7 +34,7 @@ PrintLayoutToolbarButton::PrintLayoutToolbarButton(const std::string& icon_name,
   Gtk::Image* image = Gtk::manage (new Gtk::Image());
 
   const std::string resource_path = UiUtils::get_icon_path(icon_name);
-  if(!g_resources_get_info(resource_path.c_str(), G_RESOURCE_LOOKUP_FLAGS_NONE, 0, 0, 0))
+  if(!Utils::get_resource_exists(resource_path))
   {
     std::cerr << G_STRFUNC << ": icon resource not found: " << resource_path << std::endl;
   }
diff --git a/glom/utility_widgets/layouttoolbarbutton.cc b/glom/utility_widgets/layouttoolbarbutton.cc
index 44974ce..67ab349 100644
--- a/glom/utility_widgets/layouttoolbarbutton.cc
+++ b/glom/utility_widgets/layouttoolbarbutton.cc
@@ -20,6 +20,7 @@
 
 #include "layouttoolbarbutton.h"
 #include <glom/utils_ui.h>
+#include <libglom/utils.h>
 #include <iostream>
 
 namespace Glom
@@ -32,7 +33,7 @@ LayoutToolbarButton::LayoutToolbarButton(const std::string& icon_name, LayoutWid
   Gtk::Image* image = Gtk::manage (new Gtk::Image());
 
   const std::string resource_path = UiUtils::get_icon_path(icon_name);
-  if(!g_resources_get_info(resource_path.c_str(), G_RESOURCE_LOOKUP_FLAGS_NONE, 0, 0, 0))
+  if(!Utils::get_resource_exists(resource_path))
   {
     std::cerr << G_STRFUNC << ": icon resource not found: " << resource_path << std::endl;
   }