Added basic loading of categories.

Added two empty sample categories with corresponding icons.
The categories are now being loaded into the toolbar
in the main program window.

share/library/Logical/icon.svg

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share/library/Passive/icon.svg

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+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
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src/symbol-category.h

@@ -27,7 +27,6 @@ G_BEGIN_DECLS
 	((obj), LOGDIAG_SYMBOL_CATEGORY, LogdiagSymbolCategoryClass))
 
 typedef struct _LogdiagSymbolCategory LogdiagSymbolCategory;
-/*typedef struct _LogdiagSymbolCategoryPrivate LogdiagSymbolCategoryPrivate;*/
 typedef struct _LogdiagSymbolCategoryClass LogdiagSymbolCategoryClass;
 
 
@@ -46,8 +45,8 @@ struct _LogdiagSymbolCategory
 
 /*< public >*/
 	gpointer parent;
-	char *name;
+	gchar *name;
-	char *image_path;
+	gchar *image_path;
 	GHashTable *children;
 };
 

src/symbol-library.c

@@ -74,8 +74,8 @@ logdiag_symbol_library_init (LogdiagSymbolLibrary *self)
 	/* TODO: lua */
 	self->priv->lua_state = NULL;
 
-	/* TODO: use _new_full and specify destroy functions. */
+	self->categories = g_hash_table_new_full (g_str_hash, g_str_equal,
-	self->categories = g_hash_table_new (g_str_hash, g_str_equal);
+		(GDestroyNotify) g_free, (GDestroyNotify) g_object_unref);
 }
 
 static void
@@ -110,7 +110,7 @@ logdiag_symbol_library_new (void)
  *
  * Loads a category into the library.
  */
-LogdiagSymbolCategory *
+static LogdiagSymbolCategory *
 load_category (LogdiagSymbolLibrary *self, const char *path, const char *name)
 {
 	LogdiagSymbolCategory *cat;
@@ -120,6 +120,9 @@ load_category (LogdiagSymbolLibrary *self, const char *path, const char *name)
 	g_return_val_if_fail (path != NULL, NULL);
 	g_return_val_if_fail (name != NULL, NULL);
 
+	if (!g_file_test (path, G_FILE_TEST_IS_DIR))
+		return NULL;
+
 	icon_file = g_build_filename (path, "icon.svg", NULL);
 	if (!g_file_test (icon_file, G_FILE_TEST_IS_REGULAR))
 	{

src/window-main.c

@@ -14,6 +14,7 @@
 
 #include "window-main.h"
 #include "symbol-library.h"
+#include "symbol-category.h"
 
 
 /**
@@ -45,6 +46,24 @@ struct _LogdiagWindowMainPrivate
 G_DEFINE_TYPE (LogdiagWindowMain, logdiag_window_main, GTK_TYPE_WINDOW);
 
 
+/* ===== Local functions =================================================== */
+
+/*
+ * cb_load_category:
+ *
+ * A hashtable foreach callback for adding categories into the toolbar.
+ */
+static void
+cb_load_category (gpointer key, gpointer value, gpointer user_data);
+
+/*
+ * load_toolbar:
+ *
+ * Load symbols from the library into the toolbar.
+ */
+static void
+load_toolbar (LogdiagWindowMain *self);
+
 /*
  * cb_ui_proxy_connected:
  *
@@ -76,6 +95,8 @@ static void
 cb_show_about_dialog (GtkAction *action, LogdiagWindowMain *window);
 
 
+/* ===== Local variables =================================================== */
+
 /* Actions for menus, toolbars, accelerators. */
 static GtkActionEntry mw_actionEntries[] =
 {
@@ -177,10 +198,10 @@ logdiag_window_main_init (LogdiagWindowMain *self)
 	priv->menu = gtk_ui_manager_get_widget (ui_manager, "/MenuBar");
 	gtk_box_pack_start (GTK_BOX (priv->vbox), priv->menu, FALSE, FALSE, 0);
 
-
 	priv->hbox = gtk_hbox_new(FALSE, 0);
 	gtk_box_pack_start (GTK_BOX (priv->vbox), priv->hbox, TRUE, TRUE, 0);
 
+	/* Add the symbol toolbar. */
 	priv->toolbar = gtk_toolbar_new ();
 	/* NOTE: For GTK 2.16+, s/toolbar/orientable/ */
 	gtk_toolbar_set_orientation
@@ -190,18 +211,13 @@ logdiag_window_main_init (LogdiagWindowMain *self)
 	gtk_toolbar_set_style
 		(GTK_TOOLBAR (priv->toolbar), GTK_TOOLBAR_ICONS);
 
+	gtk_box_pack_start (GTK_BOX (priv->hbox), priv->toolbar, FALSE, FALSE, 0);
+
 	/* Symbol library. */
 	priv->library = logdiag_symbol_library_new ();
-	logdiag_symbol_library_load (priv->library, PROJECT_SHARE_DIR "library/");
+	logdiag_symbol_library_load (priv->library, PROJECT_SHARE_DIR "library");
 
-	/* TODO: Show contents of the library in the toolbar. */
+	load_toolbar (self);
-	GtkToolItem *item;
-	item = gtk_tool_button_new (/* icon widget */ NULL, _("Blah"));
-	gtk_tool_button_set_icon_name (GTK_TOOL_BUTTON (item), "network");
-	gtk_toolbar_insert (GTK_TOOLBAR (priv->toolbar), item, 0);
-	/* http://library.gnome.org/devel/gdk-pixbuf/unstable/ */
-
-	gtk_box_pack_start (GTK_BOX (priv->hbox), priv->toolbar, FALSE, FALSE, 0);
 
 	/* TODO: GtkHPaned */
 
@@ -220,6 +236,44 @@ logdiag_window_main_init (LogdiagWindowMain *self)
 	gtk_widget_show_all (GTK_WIDGET (self));
 }
 
+static void
+cb_load_category (gpointer key, gpointer value, gpointer user_data)
+{
+	const gchar *name;
+	LogdiagSymbolCategory *cat;
+	LogdiagWindowMain *self;
+	GdkPixbuf *pbuf;
+	GtkWidget *img;
+	GtkToolItem *item;
+
+	name = key;
+	cat = value;
+	self = user_data;
+
+	g_return_if_fail (key != NULL);
+	g_return_if_fail (LOGDIAG_IS_SYMBOL_CATEGORY (cat));
+
+	/* XXX: Hardcoded icon width, unref? */
+	pbuf = gdk_pixbuf_new_from_file_at_size (cat->image_path, 32, -1, NULL);
+	if (!pbuf)
+		return;
+	img = gtk_image_new_from_pixbuf (pbuf);
+	g_object_unref (pbuf);
+
+	item = gtk_tool_button_new (img, name);
+	gtk_tool_item_set_tooltip_text (item, name);
+	gtk_toolbar_insert (GTK_TOOLBAR (self->priv->toolbar), item, 0);
+}
+
+static void
+load_toolbar (LogdiagWindowMain *self)
+{
+	/* TODO: Clear the toolbar first, if there was already something in it. */
+
+	g_hash_table_foreach (self->priv->library->categories,
+		cb_load_category, self);
+}
+
 static void
 cb_ui_proxy_connected (GtkUIManager *ui, GtkAction *action,
 	GtkWidget *proxy, LogdiagWindowMain *window)